1. A troweling machine for bridge construction comprises a main body (1), a handle (2), a protective cover (3), a driving mechanism, a first bearing, a rotating shaft (6) and two blades (7), wherein the handle (2) is connected with one side of the main body (1), the protective cover (3) is arranged below the main body (1), the driving mechanism is arranged at the bottom of the main body (1), the driving mechanism is connected with one end of the rotating shaft (6), the first bearing is arranged at the bottom of the main body (1), a through hole is arranged below the main body (1), the periphery of the rotating shaft (6) is connected with an inner ring of the first bearing, the other end of the rotating shaft (6) penetrates through the through hole, the blades (7) are connected with the other end of the rotating shaft (6), the two blades (7) are symmetrically arranged relative to the axis of the rotating shaft (6), and a PLC is arranged inside the main body (1), the device is characterized by also comprising a cleaning mechanism and a dust removing mechanism, wherein the cleaning mechanism and the dust removing mechanism are both connected with the rotating shaft (6);

the dust removal mechanism comprises a filter screen (34), an elastic rope (33), a rotating assembly, a rotating rod (31), two fixing blocks and two magnet blocks (32), an opening is formed in one side, away from the handle (2), of the main body (1), the filter screen (34) is connected with the inner wall of the opening, the fixing blocks are connected with one side, close to the opening, of the main body (1), one sides, close to each other, of the two fixing blocks are connected with the two ends of the elastic rope (33) respectively, the elastic rope (33) abuts against the filter screen (34), one magnet block (32) is arranged on the elastic rope (33), the other magnet block (32) is connected with one side, close to the filter screen (34), of one end of the rotating rod (31), and the other end of the rotating rod (31) is connected with the rotating shaft (6) through the rotating assembly;

the cleaning mechanism comprises a water tank (8), a water pumping assembly, a power assembly and two cleaning assemblies, wherein the water tank (8) is arranged above the main body (1), the water pumping assembly is arranged at the top in the main body (1), the water pumping assembly is connected with the water tank (8), a blind hole is formed in the rotating shaft (6), the water pumping assembly is connected with the blind hole, the blind hole and the rotating shaft (6) are coaxially arranged, the cleaning assemblies are arranged at one end, close to the blades (7), of the rotating shaft (6), the cleaning assemblies correspond to the blades (7) one by one, the power assembly is arranged inside the blind hole, and the power assembly is connected with the cleaning assemblies;

the cleaning assembly comprises a scraper (25), a nozzle (26), a hose (27), a moving unit and a lifting unit, wherein the section of the scraper (25) is U-shaped, the scraper (25) is matched with a blade (7), a through hole is formed in the scraper (25), the nozzle (26) is arranged on one side, away from the rotating shaft (6), of the scraper (25), the nozzle (26) is arranged towards the blade (7), one end of the hose (27) is communicated with a blind hole, the other end of the hose (27) penetrates through the through hole to be communicated with the nozzle (26), the moving unit is arranged on the rotating shaft (6), the moving unit is connected with the power assembly, the moving unit is connected with the lifting unit, and the lifting unit is connected with the upper portion of the scraper (25).

2. The troweling machine for bridge construction according to claim 1, characterized in that the driving mechanism comprises a motor (4) and two first gears (5), the motor (4) is arranged at the bottom inside the main body (1), the motor (4) is in transmission connection with one of the first gears (5), the other first gear (5) is connected with the rotating shaft (6), the two first gears (5) are meshed, and the motor (4) is electrically connected with the PLC.

3. The troweling machine for bridge construction according to claim 1, wherein the rotating assembly comprises a first bevel gear (28), a second bevel gear (29), a transmission shaft (30) and a second bearing, a round hole is formed in one side, close to the opening, of the main body (1), the second bearing is arranged on the inner wall of one side, close to the round hole, of the main body (1), the first bevel gear (28) is arranged on the rotating shaft (6), the second bevel gear (29) is connected with one end of the transmission shaft (30), the first bevel gear (28) is meshed with the second bevel gear (29), the outer periphery of the transmission shaft (30) is connected with the inner ring of the second bearing, and the other end of the transmission shaft (30) penetrates through the round hole to be connected with one end, far away from the magnet block (32), of the rotating rod (31).

4. The troweling machine for bridge construction according to claim 1, wherein the water pumping assembly comprises a water pump (10), a water inlet pipe (9), a third bearing and a water outlet pipe (11), the water pump (10) is arranged at the top inside the main body (1), the water pump (10) is communicated with the bottom inside the water tank (8) through the water inlet pipe (9), the water pump (10) is communicated with one end of the water outlet pipe (11), the periphery of the other end of the water outlet pipe (11) is connected with the inner ring of the third bearing, the outer ring of the third bearing is connected with the inner wall of the blind hole, and the water outlet pipe (11) is communicated with the inside of the blind hole.

5. The troweling machine for bridge construction according to claim 1, wherein the power assembly comprises a power shaft (13), two fourth bearings and a plurality of paddles (12), the fourth bearings are connected with the inner wall of the blind hole, two ends of the power shaft (13) are respectively connected with inner rings of the two fourth bearings, the paddles (12) are circumferentially and uniformly arranged on the periphery of the power shaft (13), and two moving units are respectively connected with two ends of the power shaft (13).

6. The troweling machine for bridge construction according to claim 5, wherein the moving unit comprises a slide rail (19), a screw rod (17), a sliding block (18), a speed reduction unit and two fifth bearings, one end of the slide rail (19) is connected with the rotating shaft (6), a sliding groove is arranged below the slide rail (19), the sliding groove is arranged in parallel with the blade (7), the two fifth bearings are respectively connected with the inner walls of the two ends of the sliding groove, the screw rod (17) is connected with the inner ring of the fifth bearings, the sliding block (18) is sleeved on the screw rod (17), a connecting part of the sliding block (18) and the screw rod (17) is provided with a thread matched with the screw rod (17), the upper part of the sliding block (18) is abutted against the top part in the sliding groove, the lower part of the sliding block (18) is connected with the lifting unit, the inner wall of the blind hole is provided with two first through holes, the inner wall of one end, close to the rotating shaft (6), of the sliding groove is provided with a second through hole, the first through hole corresponds to the second through hole in a one-to-one mode, one end of the screw rod (17) penetrates through the second through hole and the first through hole in sequence and is arranged inside the blind hole, and one end of the screw rod (17) is connected with the power shaft (13) through the speed reduction unit.

7. The troweling machine for bridge construction according to claim 6, wherein the speed reduction unit comprises an auxiliary gear (15), transmission gears (14) and a torsion spring (16), the two transmission gears (14) are respectively connected with two ends of the power shaft (13), the auxiliary gear (15) is connected with a screw rod (17), the auxiliary gear (15) is meshed with the transmission gears (14), and two ends of the torsion spring (16) are respectively connected with the inner wall of the blind hole and the auxiliary gear (15).

8. The troweling machine for bridge construction according to claim 7, characterized in that the number of teeth of the auxiliary gear (15) is much larger than the number of teeth of the transmission gear (14).

9. The troweling machine for bridge construction according to claim 1, wherein the lifting unit includes an air cylinder (20), an electromagnet (21), a magnet plate (23), a first spring (22), and a lifting lever (24), the lower part of the slide block (18) is connected with an air cylinder (20), one side of the air cylinder (20) close to the scraper (25) is provided with a small hole, the electromagnet (21) is arranged at the top in the air cylinder (20), the magnet plate (23) is connected with the inner wall of the air cylinder (20) in a sealing and sliding way, the two ends of the first spring (22) are respectively connected with the top part in the air cylinder (20) and the upper part of the magnet plate (23), one end of the lifting rod (24) is connected with the lower part of the magnet plate (23), the other end of the lifting rod (24) penetrates through the small hole to be connected with the scraper (25), and the electromagnet (21) is electrically connected with the PLC.

Background

The troweling machine is also called as a light collecting machine, and the main structure of the troweling machine is a troweling rotor driven by a gasoline engine, a troweling knife is arranged on the bottom surface of a cross in the middle of the rotor, and the troweling machine is a concrete surface rough and fine troweling machine. The troweling machine can be widely used for slurry lifting, troweling and troweling of concrete surfaces of high-standard factory buildings, warehouses, parking lots, squares, airports and frame-type buildings.

Present smoothing machine is after long-time the use, the filtration pore on the filter screen can be blockked up by the dust, thereby influence the inside radiating effect of main part, the practicality of current smoothing machine has been reduced, moreover, current smoothing machine is carrying out smoothing work back, partial cement can remain on the blade, thereby increase the speed that the blade was corroded, thereby the probability that the blade was destroyed has been increased, and the cement that solidifies on the blade can lead to the card of blade to die, make the blade unable rotation, thereby influence smoothing work, the reliability of current smoothing machine has been reduced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the troweling machine for bridge construction is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a troweling machine for bridge construction comprises a main body, a handle, a protective cover, a driving mechanism, a first bearing, a rotating shaft and two blades, wherein the handle is connected with one side of the main body, the protective cover is arranged below the main body, the driving mechanism is arranged at the bottom in the main body, the driving mechanism is connected with one end of the rotating shaft, the first bearing is arranged at the bottom in the main body, a through hole is formed in the lower portion of the main body, the periphery of the rotating shaft is connected with an inner ring of the first bearing, the other end of the rotating shaft penetrates through the through hole, the blades are connected with the other end of the rotating shaft, the two blades are symmetrically arranged about the axis of the rotating shaft, a PLC is arranged in the main body, and the troweling machine further comprises a cleaning mechanism and a dust removing mechanism, and the cleaning mechanism;

the dust removal mechanism comprises a filter screen, an elastic rope, a rotating assembly, a rotating rod, two fixed blocks and two magnet blocks, wherein an opening is formed in one side, far away from the handle, of the main body, the filter screen is connected with the inner wall of the opening, the fixed blocks are connected with one side, close to the opening, of the main body, one sides, close to each other, of the two fixed blocks are respectively connected with two ends of the elastic rope, the elastic rope is abutted against the filter screen, one magnet block is arranged on the elastic rope, the other magnet block is connected with one side, close to the filter screen, of one end of the rotating rod, and the other end of the rotating rod is connected with the;

the cleaning mechanism comprises a water tank, a water pumping assembly, a power assembly and two cleaning assemblies, wherein the water tank is arranged above the main body, the water pumping assembly is arranged at the top in the main body and is connected with the water tank, a blind hole is formed in the rotating shaft, the water pumping assembly is connected with the blind hole, the blind hole and the rotating shaft are coaxially arranged, the cleaning assemblies are arranged at one end of the rotating shaft close to the blades, the cleaning assemblies correspond to the blades one to one, the power assembly is arranged in the blind hole, and the power assembly is connected with the cleaning assemblies;

the cleaning assembly comprises a scraper, a nozzle, a hose, a moving unit and a lifting unit, the section of the scraper is U-shaped, the scraper is matched with a blade, a through hole is formed in the scraper, the nozzle is arranged on one side of the scraper, which is far away from a rotating shaft, and is arranged towards the blade, one end of the hose is communicated with a blind hole, the other end of the hose penetrates through the through hole and is communicated with the nozzle, the moving unit is arranged on the rotating shaft and is connected with the power assembly, the moving unit is connected with the lifting unit, and the lifting unit is connected with the upper side of the scraper.

Preferably, in order to drive the rotating shaft to rotate, the driving mechanism comprises a motor and two first gears, the motor is arranged at the bottom in the main body and is in transmission connection with one of the first gears, the other first gear is connected with the rotating shaft, the two first gears are meshed, and the motor is electrically connected with the PLC.

Preferably, in order to drive the rotating rod to rotate, the rotating assembly comprises a first bevel gear, a second bevel gear, a transmission shaft and a second bearing, a round hole is formed in one side, close to the opening, of the main body, the second bearing is arranged on the inner wall of one side, close to the round hole, of the main body, the first bevel gear is arranged on the rotating shaft, the second bevel gear is connected with one end of the transmission shaft, the first bevel gear is meshed with the second bevel gear, the periphery of the transmission shaft is connected with an inner ring of the second bearing, and the other end of the transmission shaft penetrates through the round hole to be connected with one end, far away from the magnet block, of the rotating rod.

As preferred, in order to realize the circulation of water, the subassembly that draws water includes suction pump, inlet tube, third bearing and outlet pipe, the suction pump sets up the top in the main part, the suction pump passes through the bottom intercommunication in inlet tube and the water tank, the suction pump communicates with the one end of outlet pipe, the periphery of the other end of outlet pipe is connected with the inner circle of third bearing, the outer lane of third bearing and the interior wall connection of blind hole, the outlet pipe communicates with the inside of blind hole.

Preferably, in order to provide power, the power assembly comprises a power shaft, two fourth bearings and a plurality of paddles, the fourth bearings are connected with the inner wall of the blind hole, two ends of the power shaft are respectively connected with inner rings of the two fourth bearings, the paddles are uniformly arranged on the periphery of the power shaft in the circumferential direction, and the two moving units are respectively connected with two ends of the power shaft.

Preferably, in order to realize the movement of the nozzle, the moving unit comprises a slide rail, a screw rod, a slide block, a speed reduction unit and two fifth bearings, one end of the slide rail is connected with the rotating shaft, a slide groove is arranged below the slide rail, the slide groove is arranged in parallel with the blade, the two fifth bearings are respectively connected with the inner walls of the two ends of the slide groove, the screw rod is connected with the inner ring of the fifth bearing, the slide block is sleeved on the screw rod, a thread matched with the screw rod is arranged at the joint of the slide block and the screw rod, the upper part of the slide block is abutted against the top in the slide groove, the lower part of the slide block is connected with the lifting unit, two first through holes are arranged on the inner wall of the blind hole, second through holes are arranged on the inner wall of one end of the slide groove close to the rotating shaft, the first through holes correspond to the second through holes one to one, and one end of the screw rod sequentially penetrates through the second through holes and the first through holes to be arranged inside the blind hole, one end of the screw rod is connected with the power shaft through the speed reducing unit.

Preferably, in order to drive the screw rod to rotate, the speed reduction unit comprises an auxiliary gear, a transmission gear and a torsion spring, the two transmission gears are respectively connected with two ends of the power shaft, the auxiliary gear is connected with the screw rod, the auxiliary gear is meshed with the transmission gear, and two ends of the torsion spring are respectively connected with the inner wall of the blind hole and the auxiliary gear.

Preferably, the auxiliary gear has a number of teeth that is substantially greater than the number of teeth of the transmission gear for speed reduction purposes.

As preferred, in order to drive the scraper blade and go up and down, the lift unit includes inflator, electro-magnet, magnet board, first spring and lifter, the below and the inflator connection of slider, one side that is close to the scraper blade of inflator is equipped with the aperture, the electro-magnet sets up the top in the inflator, the sealed sliding connection of inner wall of magnet board and inflator, the both ends of first spring are connected with the top in the inflator and the top of magnet board respectively, the one end of lifter is connected with the below of magnet board, the other end of lifter passes the aperture and is connected with the scraper blade, the electro-magnet is connected with the PLC electricity.

The troweling machine for bridge construction has the advantages that the troweling machine for bridge construction achieves the function of cleaning the filter screen through the dust removing mechanism, prevents dust from blocking the filter screen and affecting the flow of air, thereby avoiding affecting the heat dissipation in the main body and improving the reliability of equipment, compared with the existing dust removing mechanism, the dust removing mechanism utilizes the rotation of the blade as power, reduces the use of a driving source, is more energy-saving and environment-friendly, achieves the function of cleaning the blade through the cleaning mechanism, prevents cement from adhering to the blade and solidifying, reduces the phenomenon of blade jamming, prevents the influence on the next troweling work, prevents the blade from being corroded by the cement accumulated on the blade, reduces the probability of blade damage, improves the reliability of equipment, compared with the existing cleaning mechanism, the cleaning mechanism moves through the leaning of the scraper, the water remaining on the blade is scraped, so that the water is prevented from accumulating on the blade, the corrosion speed of the blade is prevented from being accelerated, the service life of the blade can be prolonged, the practicability is higher, the nozzle moves slowly, the blade is cleaned more fully, the cleaning effect is improved, and after cleaning is completed, the scraper can be driven to move upwards, the scraper cannot influence the smoothness of the ground, the floating effect cannot be influenced, and the practicability of the equipment is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of a troweling machine for bridge construction according to the present invention;

FIG. 2 is a schematic structural diagram of a dust removal mechanism of the troweling machine for bridge construction according to the present invention;

FIG. 3 is a schematic structural diagram of a cleaning mechanism of the troweling machine for bridge construction according to the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3;

in the figure: 1. the water pump comprises a main body, a handle, a protective cover, a motor, a first gear, a rotating shaft, a blade, a water tank, a water inlet pipe, a water pump, a water outlet pipe, a paddle, a power shaft, a transmission gear, an auxiliary gear, a torsion spring, a screw rod, a sliding block, a sliding rail, an air cylinder, an electromagnet, a nozzle, a first spring, a magnet plate, a lifting rod, a scraper, a nozzle, a hose, a first bevel gear, a second bevel gear, a transmission shaft, a rotating rod, a magnet block, a spring rope, a filter screen and a motor, wherein the handle is 2, the protective cover is 3, the motor is 4, the first gear is 5, the rotating shaft is 6, the blade is 7, the water tank is 8, the water inlet pipe is 9, the water inlet pipe is 10, the transmission gear is 15, the auxiliary gear is 16, the electromagnet is 21, the electromagnet, the magnet block is 22, the magnet block is 23, the lifting rod is 24, the scraper blade, and the filter screen is 26.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, a troweling machine for bridge construction comprises a main body 1, a handle 2, a protective cover 3, a driving mechanism, a first bearing, a rotating shaft 6 and two blades 7, the handle 2 is connected with one side of the main body 1, the protective cover 3 is arranged below the main body 1, the driving mechanism is arranged at the bottom in the main body 1 and is connected with one end of the rotating shaft 6, the first bearing is arranged at the bottom in the main body 1, a through hole is arranged below the main body 1, the periphery of the rotating shaft 6 is connected with the inner ring of the first bearing, the other end of the rotating shaft 6 penetrates through the through hole, the blades 7 are connected with the other end of the rotating shaft 6, the two blades 7 are symmetrically arranged relative to the axis of the rotating shaft 6, the PLC is arranged in the main body 1, and the cleaning mechanism and the dust removal mechanism are connected with the rotating shaft 6;

PLCs, i.e., programmable logic controllers, are generally used for the processing of data and the receipt and output of instructions for central control.

This a troweling machine for bridge construction passes through dust removal mechanism, the function of clean filter screen 34 has been realized, prevent that the dust from blockking up filter screen 34, prevent to exert an influence on the flow of air, thereby avoid influencing the heat dissipation of main part 1 inside, the reliability of equipment has been improved, through clean mechanism, the function of clean blade 7 has been realized, prevent that the cement adhesion from appearing the phenomenon that solidifies on blade 7, thereby reduce blade 7 and appear the dead phenomenon of card, prevent to exert an influence to the troweling work of next time, also prevent that the cement that gathers on blade 7 from corroding blade 7, the probability that blade 7 damaged has been reduced, thereby the reliability of equipment has been improved.

As shown in fig. 2, the dust removing mechanism includes a filter screen 34, an elastic rope 33, a rotating assembly, a rotating rod 31, two fixing blocks and two magnet blocks 32, an opening is formed in one side of the main body 1, which is far away from the handle 2, the filter screen 34 is connected with the inner wall of the opening, the fixing blocks are connected with one side, which is close to the opening, of the main body 1, the mutually close sides of the two fixing blocks are respectively connected with two ends of the elastic rope 33, the elastic rope 33 abuts against the filter screen 34, one magnet block 32 is arranged on the elastic rope 33, the other magnet block 32 is connected with one side, which is close to the filter screen 34, of one end of the rotating rod 31, and the other end of the rotating rod 31 is connected with the rotating shaft 6 through the rotating assembly;

when the floating work is performed, the driving mechanism works to drive the rotating shaft 6 to rotate, so as to drive the rotating assembly to work, so that the rotating rod 31 rotates, so as to drive the magnet block 32 connected with the rotating rod 31 to rotate, actually, the magnetic poles at the sides, close to each other, of the two magnet blocks 32 are opposite, so that when the magnet block 32 connected with the rotating rod 31 rotates to be close to the other magnet block 32, the magnet block 32 is attracted, the elastic rope 33 can be driven to move, when the magnet block 32 connected with the rotating rod 31 rotates to be far away from the other magnet block 32, the attraction between the two magnet blocks 32 is reduced, so that the elastic rope 33 is loosened, the elastic rope 33 is hit on the filter screen 34, so that the filter screen 34 generates a vibration phenomenon, so that dust adhered to the filter screen 34 can be shaken off, the function of cleaning the filter screen 34 is realized, the filter screen 34 is prevented from being blocked by the dust, and the influence on the flow of air is prevented, thereby avoiding affecting the heat dissipation inside the main body 1 and improving the reliability of the device.

As shown in fig. 3-4, the cleaning mechanism includes a water tank 8, a water pumping assembly, a power assembly and two cleaning assemblies, the water tank 8 is disposed above the main body 1, the water pumping assembly is disposed at the top of the main body 1, the water pumping assembly is connected to the water tank 8, a blind hole is disposed on the rotating shaft 6, the water pumping assembly is connected to the blind hole, the blind hole is disposed coaxially with the rotating shaft 6, the cleaning assemblies are disposed on one end of the rotating shaft 6 close to the blades 7, the cleaning assemblies are in one-to-one correspondence with the blades 7, the power assembly is disposed inside the blind hole, and the power assembly is connected to the cleaning assemblies;

the cleaning assembly comprises a scraper 25, a nozzle 26, a hose 27, a moving unit and a lifting unit, the section of the scraper 25 is U-shaped, the scraper 25 is matched with the blade 7, a through hole is formed in the scraper 25, the nozzle 26 is arranged on one side of the scraper 25, which is far away from the rotating shaft 6, the nozzle 26 is arranged towards the blade 7, one end of the hose 27 is communicated with a blind hole, the other end of the hose 27 penetrates through the through hole to be communicated with the nozzle 26, the moving unit is arranged on the rotating shaft 6 and is connected with the power assembly, the moving unit is connected with the lifting unit, and the lifting unit is connected with the upper part of the scraper 25.

When cleaning is carried out, the water pumping assembly is controlled to work, clean water in the water tank 8 is guided into the blind hole, the clean water can be guided into the nozzle 26 through the hose 27, the nozzle 26 sprays water towards the blade 7, cement adhered to the blade 7 is blown off, the function of cleaning the blade 7 is realized, the phenomenon that the cement is adhered to the blade 7 and is solidified is prevented, the phenomenon that the blade 7 is stuck is reduced, the influence on the next troweling work is prevented, the corrosion of the blade 7 caused by the cement accumulated on the blade 7 is also prevented, the damage probability of the blade 7 is reduced, the reliability of the equipment is improved, meanwhile, the lifting unit is controlled to work, the scraper 25 is driven to move downwards, the scraper 25 is abutted against the blade 7, meanwhile, the power assembly is driven to work through the action of water flow, the moving unit is driven, and the scraper 25 is driven to move, make nozzle 26 remove, thereby can make blade 7 each department can both be spouted water, thereby the clear effect of water spray has been promoted, support through scraper blade 25 simultaneously and remove, make the moisture that will remain on blade 7 scrape off, thereby prevent that moisture from gathering on blade 7, avoid accelerating the speed that blade 7 is corroded, thereby can prolong the life of blade 7, the practicality is higher, after clean the completion, the subassembly stop work draws water, make the clear water in the water tank 8 can not fall into the inside of blind hole, thereby make power component can not work, the work of simultaneous control lift unit, make scraper blade 25 rebound, make when carrying out trowelling, scraper blade 25 can not influence the level and smooth on ground, thereby can not exert an influence to the trowelling effect, thereby the practicality of equipment has been improved.

Preferably, in order to drive the rotating shaft 6 to rotate, the driving mechanism comprises a motor 4 and two first gears 5, the motor 4 is arranged at the bottom in the main body 1, the motor 4 is in transmission connection with one of the first gears 5, the other first gear 5 is connected with the rotating shaft 6, the two first gears 5 are meshed, and the motor 4 is electrically connected with the PLC.

When carrying out floating work, control motor 4 starts, drives the first gear 5 who is connected with motor 4 and rotates, through the meshing of two first gears 5 for first gear 5 who is connected with pivot 6 rotates, thereby makes pivot 6 rotate, makes blade 7 rotate, thereby makes blade 7 can carry out floating work to ground.

Preferably, in order to drive the rotating rod 31 to rotate, the rotating assembly comprises a first bevel gear 28, a second bevel gear 29, a transmission shaft 30 and a second bearing, a circular hole is formed in one side of the main body 1 close to the opening, the second bearing is arranged on the inner wall of the main body 1 close to the circular hole, the first bevel gear 28 is arranged on the rotating shaft 6, the second bevel gear 29 is connected with one end of the transmission shaft 30, the first bevel gear 28 is meshed with the second bevel gear 29, the outer periphery of the transmission shaft 30 is connected with the inner ring of the second bearing, and the other end of the transmission shaft 30 penetrates through the circular hole to be connected with one end of the rotating rod 31 far away from the magnet block 32.

When the rotating shaft 6 rotates, the first bevel gear 28 is driven to rotate, the second bevel gear 29 is driven to rotate through the meshing of the first bevel gear 28 and the second bevel gear 29, so as to drive the transmission shaft 30 to rotate, the rotating rod 31 is driven to rotate, so as to drive the magnet block 32 connected with the rotating rod 31 to rotate, actually, the magnetic poles of the sides, close to each other, of the two magnet blocks 32 are opposite, so that when the magnet block 32 connected with the rotating rod 31 rotates to be close to the other magnet block 32, the magnet block 32 is attracted, the elastic rope 33 can be driven to move, when the magnet block 32 connected with the rotating rod 31 rotates to be far from the other magnet block 32, the attraction force between the two magnet blocks 32 is reduced, so that the elastic rope 33 is loosened, the elastic rope 33 hits on the filter screen 34, so that the filter screen 34 generates a vibration phenomenon, thereby dust adhered on the filter screen 34 can be shaken off, and the function of cleaning the filter screen 34 is realized, prevent that the filter screen 34 is blockked up to the dust, prevent to produce the influence to the flow of air to avoid influencing the inside heat dissipation of main part 1, improved the reliability of equipment.

As preferred, in order to realize the circulation of water, the subassembly that draws water includes suction pump 10, inlet tube 9, third bearing and outlet pipe 11, suction pump 10 sets up the top in main part 1, suction pump 10 communicates through the bottom in inlet tube 9 and the water tank 8, suction pump 10 communicates with the one end of outlet pipe 11, the periphery of the other end of outlet pipe 11 and the inner circle of third bearing are connected, the outer lane of third bearing and the interior wall connection of blind hole, outlet pipe 11 communicates with the inside of blind hole.

Preferably, in order to provide power, the power assembly comprises a power shaft 13, two fourth bearings and a plurality of blades 12, the fourth bearings are connected with the inner wall of the blind hole, two ends of the power shaft 13 are respectively connected with inner rings of the two fourth bearings, the blades 12 are circumferentially and uniformly arranged on the periphery of the power shaft 13, and the two moving units are respectively connected with two ends of the power shaft 13.

Preferably, in order to realize the movement of the nozzle 26, the moving unit includes a slide rail 19, a screw rod 17, a slide block 18, a speed reduction unit and two fifth bearings, one end of the slide rail 19 is connected with the rotating shaft 6, a slide groove is arranged below the slide rail 19, the slide groove is arranged in parallel with the blade 7, the two fifth bearings are respectively connected with the inner walls of the two ends of the slide groove, the screw rod 17 is connected with the inner ring of the fifth bearing, the slide block 18 is sleeved on the screw rod 17, a screw thread matched with the screw rod 17 is arranged at the joint of the slide block 18 and the screw rod 17, the upper part of the slide block 18 is abutted against the top part in the slide groove, the lower part of the slide block 18 is connected with the lifting unit, two first through holes are arranged on the inner wall of the blind hole, second through holes are arranged on the inner wall of one end of the slide groove close to the rotating shaft 6, and the first through holes are in one-to-one correspondence with the second through holes, one end of the screw rod 17 sequentially penetrates through the second through hole and the first through hole to be arranged inside the blind hole, and one end of the screw rod 17 is connected with the power shaft 13 through the speed reducing unit.

Preferably, in order to drive the screw rod 17 to rotate, the speed reduction unit comprises an auxiliary gear 15, a transmission gear 14 and a torsion spring 16, the two transmission gears 14 are respectively connected with two ends of the power shaft 13, the auxiliary gear 15 is connected with the screw rod 17, the auxiliary gear 15 is meshed with the transmission gear 14, and two ends of the torsion spring 16 are respectively connected with the inner wall of the blind hole and the auxiliary gear 15.

Preferably, in order to drive the scraper 25 to ascend and descend, the ascending and descending unit comprises an air cylinder 20, an electromagnet 21, a magnet plate 23, a first spring 22 and an ascending and descending rod 24, the lower portion of the sliding block 18 is connected with the air cylinder 20, one side, close to the scraper 25, of the air cylinder 20 is provided with a small hole, the electromagnet 21 is arranged at the top of the air cylinder 20, the magnet plate 23 is connected with the inner wall of the air cylinder 20 in a sealing and sliding manner, two ends of the first spring 22 are respectively connected with the top of the air cylinder 20 and the upper portion of the magnet plate 23, one end of the ascending and descending rod 24 is connected with the lower portion of the magnet plate 23, the other end of the ascending and descending rod 24 penetrates through the small hole to be connected with the scraper 25, and the electromagnet 21 is electrically connected with the PLC.

When cleaning is carried out, the water suction pump 10 is controlled to be started, clean water in the water tank 8 is guided into the water inlet pipe 9, the clean water is guided into the blind hole through the water outlet pipe 11, the clean water can be guided into the nozzle 26 through the hose 27, the nozzle 26 sprays water towards the blade 7, cement adhered to the blade 7 is blown off, the function of cleaning the blade 7 is realized, the phenomenon that the cement is adhered to the blade 7 and is solidified is prevented, the phenomenon that the blade 7 is stuck is reduced, the influence on the next leveling work is prevented, the blade 7 is prevented from being corroded by the cement accumulated on the blade 7, the probability of damage to the blade 7 is reduced, the reliability of equipment is improved, meanwhile, the paddle 12 is rotated through the action of water flow, the power shaft 13 is driven to rotate, the transmission gear 14 is rotated, the auxiliary gear 15 is rotated through the meshing of the transmission gear 14 and the auxiliary gear 15, torsion spring 16 takes place deformation, drive lead screw 17 and rotate, make slider 18 remove along lead screw 17, thereby can drive inflator 20 and remove, control electro-magnet 21 circular telegram simultaneously, produce a power of repelling with magnet plate 23, make magnet plate 23 remove downwards, tensile first spring 22, make scraper blade 25 remove downwards, make scraper blade 25 can firmly support and lean on with blade 7, thereby the removal through scraper blade 25, realize the removal of nozzle 26, thereby can make blade 7 each department can both be spouted water, thereby the clear effect of water spray has been promoted, support through scraper blade 25 simultaneously and remove, make the moisture that will remain on blade 7 scrape down, thereby prevent that moisture from gathering on blade 7, avoid accelerating the speed that blade 7 is corroded, thereby can prolong the life of blade 7, the practicality is higher.

Preferably, the number of teeth of the auxiliary gear 15 is much larger than that of the transmission gear 14 for the purpose of speed reduction.

Because the number of teeth of auxiliary gear 15 is far greater than the number of teeth of drive gear 14 for when drive gear 14 rotated many rings, just can drive auxiliary gear 15 and rotate the round, thereby reduced the rotational speed of lead screw 17, the speed when making slider 18 move on lead screw 17 is comparatively slow, thereby makes nozzle 26 remove slowly, makes more water can spout blade 7, thereby makes blade 7 by clear more abundant, thereby has promoted clear effect.

When the floating work is performed, the driving mechanism works to drive the rotating shaft 6 to rotate, so as to drive the rotating assembly to work, so that the rotating rod 31 rotates, so as to drive the magnet block 32 connected with the rotating rod 31 to rotate, actually, the magnetic poles at the sides, close to each other, of the two magnet blocks 32 are opposite, so that when the magnet block 32 connected with the rotating rod 31 rotates to be close to the other magnet block 32, the magnet block 32 is attracted, the elastic rope 33 can be driven to move, when the magnet block 32 connected with the rotating rod 31 rotates to be far away from the other magnet block 32, the attraction between the two magnet blocks 32 is reduced, so that the elastic rope 33 is loosened, the elastic rope 33 is hit on the filter screen 34, so that the filter screen 34 generates a vibration phenomenon, so that dust adhered to the filter screen 34 can be shaken off, the function of cleaning the filter screen 34 is realized, the filter screen 34 is prevented from being blocked by the dust, and the influence on the flow of air is prevented, thereby avoiding affecting the heat dissipation inside the main body 1 and improving the reliability of the device. When cleaning is carried out, the water pumping assembly is controlled to work, clean water in the water tank 8 is guided into the blind hole, the clean water can be guided into the nozzle 26 through the hose 27, the nozzle 26 sprays water towards the blade 7, cement adhered to the blade 7 is blown off, the function of cleaning the blade 7 is realized, the phenomenon that the cement is adhered to the blade 7 and is solidified is prevented, the phenomenon that the blade 7 is stuck is reduced, the influence on the next troweling work is prevented, the corrosion of the blade 7 caused by the cement accumulated on the blade 7 is also prevented, the damage probability of the blade 7 is reduced, the reliability of the equipment is improved, meanwhile, the lifting unit is controlled to work, the scraper 25 is driven to move downwards, the scraper 25 is abutted against the blade 7, meanwhile, the power assembly is driven to work through the action of water flow, the moving unit is driven, and the scraper 25 is driven to move, make nozzle 26 remove to can make blade 7 everywhere can all be spouted water, thereby promoted the clear effect of water spray, support through scraper blade 25 simultaneously and remove for the moisture that will remain on blade 7 scrapes off, thereby prevents that moisture from gathering on blade 7, avoids accelerating blade 7 by the corroded speed, thereby can prolong blade 7's life, the practicality is higher.

Compared with the prior art, the troweling machine for bridge construction realizes the function of cleaning the filter screen 34 through the dust removal mechanism, prevents dust from blocking the filter screen 34 and influencing the air flow, thereby avoiding influencing the heat dissipation in the main body 1 and improving the reliability of the equipment, compared with the existing dust removal mechanism, the dust removal mechanism utilizes the rotation of the blade 7 as power, reduces the use of a driving source, is more energy-saving and environment-friendly, realizes the function of cleaning the blade 7 through the cleaning mechanism, prevents cement from adhering to the blade 7 and solidifying, thereby reducing the phenomenon of blocking of the blade 7, preventing the influence on the next troweling work, also preventing the cement accumulated on the blade 7 from corroding the blade 7, reducing the damage probability of the blade 7 and improving the reliability of the equipment, compared with the existing cleaning mechanism, this cleaning mechanism passes through leaning on of scraper blade 25 and removes, make the moisture that will remain on blade 7 scrape off, thereby prevent that moisture from gathering on blade 7, avoid accelerating the speed that blade 7 is corroded, thereby can prolong the life of blade 7, the practicality is higher, and nozzle 26 removes slowly, make blade 7 by clear more abundant, clean effect has been promoted, and clean the completion back, can drive scraper blade 25 and upwards remove, make scraper blade 25 can not influence the level and smooth on ground, thereby can not exert an influence to floating effect, thereby the practicality of equipment has been improved.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.