1. A dustproof and noise-reducing handheld air pick for buildings comprises a plunger valve 10 and is characterized in that an air control mechanism (62) is arranged on one side of the plunger valve (10), a hammering mechanism (60) is arranged on one side, away from the plunger valve (10), of the air control mechanism (62), a dust removal mechanism (61) is arranged on one side, away from the air control mechanism (62), of the hammering mechanism (60), an external cylinder introduces gas into the hammering mechanism (60) through the air control mechanism (62), so that the air pick works, and the dust removal mechanism (61) utilizes the gas compressed in the hammering mechanism (60) to remove dust in the working process of the air pick.

2. The handheld pick of claim 1, wherein the pick comprises: the air control mechanism (62) comprises an intermittent valve (51) fixed on the side, close to the hammering mechanism (60), of the plunger valve (10), an air exchange block (11) is fixedly arranged on the side, far away from the plunger valve (10), of the intermittent valve (51), an air hole (22) penetrating axially and an air exchange groove (37) penetrating radially are formed in the air exchange block (11), an air control valve wall (48) is fixedly arranged in the air hole (22), an air control cavity (23) is formed in the air control valve wall (48), a through hole coaxial and coaxial with the air exchange groove (37) and having the same diameter is formed in the air control valve wall (48), a first air inlet piston (47) penetrates through the side, close to the plunger valve (10), of the air control valve wall (48), two first air inlet holes (38) are formed in the sliding rod of the first air inlet piston (47), and two second air inlet holes (40) are formed in the baffle plate of the first air inlet piston (47) and are symmetrical to the sliding rod of the first air inlet piston (47), two side plates, close to the air exchange groove (37), of the first air inlet piston (47) are respectively provided with a dislocation hole (41), the first air inlet piston (47) is arranged on the inner wall of the air control cavity (23) in a sliding mode, two second air inlet pistons (44) are symmetrically arranged in the side, away from the plunger valve (10), of the air control valve wall (48) relative to the air outlet piston (46), the second air inlet pistons (44) located in the air control cavity (23) are connected to the inner wall, close to the air outlet piston (46), of the air control cavity (23) through first air springs (42), and each second air inlet piston (44) is internally provided with two third air outlet holes (43).

3. The handheld pick of claim 2, wherein the pick comprises: the air control mechanism (62) further comprises an air outlet piston (46) with an air control valve wall (48) far away from the plunger valve (10) side in a sliding mode, two air outlet holes (45) are formed in the air outlet piston (46), the side face, close to the plunger valve (10), of the air outlet piston (46) is connected with the side face, far away from the plunger valve (10), of the first air inlet piston (47) through a second air spring (39).

4. The handheld pick of claim 2, wherein the pick comprises: when the first air inlet piston (47) is in contact with the inner wall, close to the plunger valve (10), of the air control cavity (23), the dislocation hole (41) is coaxial with the air exchange groove (37), an air inlet groove (24) is formed in the intermittent valve (51), and the first air inlet piston (47) is arranged in the air inlet groove (24) in a sliding mode.

5. The handheld pick of claim 3, wherein the pick comprises: the hammer mechanism (60) comprises a cylinder wall (12) fixed on the side of the air exchange block (11) far away from the plunger valve (10), a slide way (21) which axially penetrates through the cylinder wall (12) is arranged in the cylinder wall, an impact hammer (14) and a noise reduction block (36) are arranged in the slide way (21) in a sliding way, the impact hammer (14) is closer to the ventilation block (11) than the noise reduction block (36), a spring groove (15) deviating from the direction of the air exchange block (11) is arranged in the impact hammer (14), the noise reduction block (36) and the (1) are connected together through a noise reduction spring (16), two air passages (13) are symmetrically arranged in the cylinder wall (12) relative to the impact hammer (14), one end of the air passage (13) is communicated with the slideway (21) at the position close to the air exchange block (11) in the limit, and the opening of the air passage (13) faces to the noise reduction block (36).

6. The handheld pick of claim 4, wherein the pick comprises: the dust removing mechanism (61) comprises a clamping block (26) fixed on the side of the cylinder wall (12) far away from the scavenging block (11), an air bag groove (49) is arranged in the drill rod clamping block (26), a pickaxe drill rod (19) is arranged in the air bag groove (49) in a sliding manner, the pickaxe drill rod (19) is connected with the inner wall of the air bag groove (49) far away from the cylinder wall (12) through a return spring (28), a compression air bag (25) is sleeved on the return spring (28), the compression air bag (25) is connected on the pick drill rod (19) and the inner wall of the air bag groove (49), the compression air bag (25) is close to the side of the cylinder wall (12) and is symmetrically and fixedly connected with telescopic air guide pipes (27) relative to the cylinder wall (12), the other end of each telescopic air guide pipe (27) is fixedly provided with a one-way valve (30), and each one-way valve (30) is connected to the corresponding opening of the air passage (13).

7. The handheld pick of claim 4, wherein the pick comprises: the dust removal mechanism (61) further comprises two pressure exchange cavities (33) which are arranged in the drill rod clamping block (26) far away from the side of the cylinder wall (12), the two pressure exchange cavities (33) are symmetrical about the pickaxe drill rod (19), the compression air bag (25) is close to the side of the pressure exchange cavity (33) and is symmetrically provided with two air guide pipes (29) about the pickaxe drill rod (19), the other ends of the two air guide pipes (29) are respectively communicated with the corresponding pressure exchange cavities (33), each pressure exchange cavity (33) is perpendicular to the inner walls of the two sides of each air guide pipe (29), a windmill shaft (32) is fixedly arranged on each windmill shaft (32), and each windmill shaft (31) is rotatably provided with a windmill (31).

8. The handheld pick of claim 5, wherein the pick comprises: dust removal mechanism (61) still keep away from including card borer piece (26) air duct (29) side fixed connection's float and sink cover (18), float and sink cover (18) and be tubaeform, be equipped with dust absorption way (17) and laying dust chamber (20) in float and sink cover (18), laying dust chamber (20) compare in dust absorption way (17) more be close to with pick borer (19), be close to in card borer piece (26) float and sink cover (18) side about pick borer (19) symmetry is equipped with two dust absorption pipes (34), two dust absorption pipe (34) will correspond respectively trade pressure chamber (33) with laying dust chamber (20) UNICOM.

Background

Handheld pneumatic pick is through compressed gas, make piston tup reciprocating motion, constantly strike pneumatic tool of pick borer, commonly use and mining, build the road etc. handheld pneumatic pick is at the during operation because the continuous pick borer that strikes of tup, make the pick borer constantly strike the working face and destroy, so always can produce the noise like tractor at the in-process that the tup struck the pick borer, can cause very big noise injury to workman's ear, when the pick borer strikes the working face, can produce a large amount of dusts, these dusts not only can the contaminated air, still can cause respiratory harm to the people.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a dustproof and noise-reducing handheld air pick for buildings.

In order to achieve the purpose, the invention adopts the following technical scheme:

preferably, the dustproof handheld pneumatic pick who makes an uproar that falls for building, includes the plunger valve, one side of plunger valve is equipped with accuse gas mechanism, one side that the plunger valve was kept away from to accuse gas mechanism is equipped with hammering mechanism, one side that accuse gas mechanism was kept away from to hammering mechanism is equipped with dust removal mechanism, and external cylinder passes through accuse gas mechanism lets in gas in the hammering mechanism, makes pneumatic pick work, and dust removal mechanism utilizes the gas of hammering in the mechanism compression to carry out the dust absorption at pneumatic pick working process.

Preferably, the air control mechanism comprises an intermittent valve fixed on the side of the plunger valve close to the hammering mechanism, an air exchange block is fixedly arranged on the side of the intermittent valve far away from the plunger valve, an air hole penetrating axially and an air exchange groove penetrating radially are formed in the air exchange block, an air control valve wall is fixedly arranged in the air hole, an air control cavity is formed in the air control valve wall, a through hole coaxial with the air exchange groove and having the same diameter is formed in the air control valve wall, a first air inlet piston penetrates through the air control valve wall close to the side of the plunger valve, two first air vents are formed in a sliding rod of the first air inlet piston, two second air vents are symmetrically arranged on a baffle plate of the first air inlet piston relative to a sliding rod of the first air inlet piston, a dislocation hole is respectively formed in each of two side plates of the first air inlet piston close to the air exchange groove, the first air inlet piston is slidably arranged on the inner wall of the air control cavity, and two second air inlet pistons are symmetrically arranged on the side of the air control valve wall far away from the plunger valve relative to the air outlet piston The second air inlet pistons positioned in the air control cavities are connected to the inner walls, close to the air outlet pistons, of the air control cavities through first air springs, and two third air through holes are formed in each second air inlet piston.

Preferably, the air control mechanism further comprises an air outlet piston, the air outlet piston is arranged on the side, far away from the plunger valve, of the air control valve wall in a sliding mode, two air outlet holes are formed in the air outlet piston, and the side, close to the plunger valve, of the air outlet piston is connected with the side, far away from the plunger valve, of the first air inlet piston through a second air spring.

Preferably, when the first air inlet piston contacts with the inner wall of the air control cavity close to the plunger valve, the dislocation hole is coaxial with the air exchange groove, an air inlet groove is formed in the intermittent valve, and the first air inlet piston is arranged in the air inlet groove in a sliding mode.

Preferably, the hammering mechanism comprises a cylinder wall fixed on the side, far away from the plunger valve, of the air exchange block, an axially-penetrating slideway is arranged in the cylinder wall, an impact hammer and a noise reduction block are arranged in the slideway in a sliding mode, the impact hammer is close to the air exchange block compared with the noise reduction block, a spring groove deviating from the direction of the air exchange block is arranged in the impact hammer, the impact hammer and the noise reduction block are connected together through a noise reduction spring, two air passages are symmetrically arranged in the cylinder wall relative to the impact hammer, one end of each air passage is communicated with the slideway at the position, close to the air exchange block, of the limit, and the opening of each air passage faces the noise reduction block.

Preferably, the dust removal mechanism comprises a clamping rod block fixed on the side, far away from the air changing block, of the air cylinder wall, an air bag groove is formed in the clamping rod block, a pick rod is arranged in the air bag groove in a sliding mode, the pick rod is connected with the inner wall, far away from the air cylinder wall, of the air bag groove through a return spring, a compression air bag is sleeved on the return spring and connected onto the inner wall of the pick rod and the air bag groove, telescopic air guide pipes are symmetrically and fixedly connected to the side, close to the air cylinder wall, of the compression air bag, one-way valves are fixedly arranged at the other ends of the telescopic air guide pipes, and each one-way valve is connected to the corresponding air passage opening.

Preferably, the dust removal mechanism further comprises two pressure change cavities arranged on the side far away from the cylinder wall in the drill chuck, the two pressure change cavities are symmetrical about the pickaxe drill rod, the compression air bag is close to the side of the pressure change cavities and is provided with two air guide pipes symmetrically about the pickaxe drill rod, the other ends of the two air guide pipes are respectively communicated with the corresponding pressure change cavities, each pressure change cavity is perpendicular to the inner walls of the two sides of each air guide pipe, and each air guide shaft is rotatably provided with a windmill.

Preferably, dust removal mechanism still includes that the card borer piece is kept away from air duct side fixed connection's float and sink the cover, float and sink the cover and be tubaeform, it says and the laying dust chamber to be equipped with the dust absorption in the cover to float and sink, the laying dust chamber compare in the dust absorption say more be close to with the pick borer, be close to in the card borer piece float and sink the cover side about pick borer symmetry is equipped with two dust absorption pipes, two the dust absorption pipe respectively will correspond the pressure changing chamber with laying dust chamber UNICOM.

Has the advantages that: the windmill is blown to rotate by utilizing the gas in the process, so that the air pressure in the windmill is reduced, the dust in the working process is sucked into the dust accumulation cavity through the dust suction channel, and finally, the dust is treated in a centralized manner, so that the dust in the working process is prevented from flying around.

Through the compression of the noise reduction spring and the noise reduction of the noise reduction block, the noise generated when the noise reduction block knocks the cylinder wall is reduced, and the noise generated when the cylinder wall and the pick drill rod directly knock is reduced.

The gas that needs to discharge when utilizing the jump bit return stroke aerifys in to the compression air bag, avoids the lack of gaseous in the compression air bag, and then has guaranteed to trade the pressure chamber to the absorbent effect of dust.

Drawings

FIG. 1 is a schematic diagram of a structural embodiment of the present invention;

FIG. 2 is a schematic view taken along the line A-A in FIG. 1;

FIG. 3 is an enlarged view of the point B in FIG. 1;

FIG. 4 is an enlarged view of FIG. 3 at C;

FIG. 5 is an enlarged view of FIG. 3 at D;

fig. 6 is an enlarged schematic view of E in fig. 1.

In the drawings, a plunger valve 10; a ventilation block 11; a cylinder wall 12; an air passage 13; a percussion hammer 14; a spring groove 15; a noise reduction spring 16; a dust suction duct 17; a sink-float cover 18; a pickaxe drill rod 19; a dust collecting chamber 20; a slide 21; an air hole 22; a gas control chamber 23; an air intake duct 24; a compression balloon 25; a clip block 26; a telescopic air duct 27; a return spring 28; an air duct 29; a check valve 30; a windmill 31; a windmill shaft 32; a pressure-changing chamber 33; a dust suction pipe 34; a dust screen 35; a noise reduction block 36; a breather tank 37; a first vent hole 38; a second air spring 39; a second vent hole 40; a dislocation hole 41; the first air spring 42; a third vent hole 43; a second intake piston 44; an air outlet 45; an outlet piston 46; a first intake piston 47; a gas control valve wall 48; an air bag groove 49; a movable groove 50; an intermittent valve 51; a hammer mechanism 60; a dust removing mechanism 61; and a gas control mechanism 62.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

In the description of the present invention, it should be noted that the terms "inside", "below", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally place when used, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

With reference to the attached drawings 1-6, the dustproof handheld pneumatic pick with the noise reduction function for the building comprises a plunger valve 10, a gas control mechanism 62 is arranged on one side of the plunger valve 10, a hammering mechanism 60 is arranged on one side, away from the plunger valve 10, of the gas control mechanism 62, a dust removal mechanism 61 is arranged on one side, away from the gas control mechanism 62, of the hammering mechanism 60, an external cylinder leads gas into the hammering mechanism 60 through the gas control mechanism 62, the pneumatic pick works, and the dust removal mechanism 61 utilizes the gas compressed in the hammering mechanism 60 to collect dust in the working process of the pneumatic pick.

The air control mechanism 62 comprises an intermittent valve 51 fixed on the side of the plunger valve 10 close to the hammering mechanism 60, an air exchange block 11 is fixedly arranged on the side of the intermittent valve 51 far away from the plunger valve 10, an air hole 22 penetrating axially and an air exchange groove 37 penetrating radially are arranged in the air exchange block 11, an air control valve wall 48 is fixedly arranged in the air hole 22, an air control chamber 23 is arranged in the air control valve wall 48, a through hole coaxial with the air exchange groove 37 and having the same diameter is arranged in the air control valve wall 48, a first air inlet piston 47 penetrates through the air control valve wall 48 close to the plunger valve 10, two first air vent holes 38 are arranged on a sliding rod of the first air inlet piston 47, two second air vent holes 40 are symmetrically arranged on a baffle plate of the first air inlet piston 47 relative to the sliding rod of the first air inlet piston 47, a dislocation hole 41 is respectively arranged on two side plates of the first air inlet piston 47 close to the air exchange groove 37, the first air inlet piston 47 is slidably arranged on the inner wall of the air control chamber 23, two second air inlet pistons 44 are symmetrically arranged in the side of the air, the second inlet pistons 44 located in the air control chamber 23 are connected to the inner wall of the air control chamber 23 near the outlet piston 46 through the first air springs 42, and two third vent holes 43 are provided in each second inlet piston 44.

The air control mechanism 62 further comprises an air outlet piston 46 with an air control valve wall 48 away from the plunger valve 10 side, two air outlet holes 45 are formed in the air outlet piston 46, and the side surface of the air outlet piston 46 close to the plunger valve 10 is connected with the side surface of the first air inlet piston 47 away from the plunger valve 10 through a second air spring 39.

When the first air inlet piston 47 contacts the inner wall of the air control chamber 23 close to the plunger valve 10, the dislocation hole 41 is coaxial with the scavenging groove 37, the air inlet groove 24 is arranged in the intermittent valve 51, and the first air inlet piston 47 is slidably arranged in the air inlet groove 24.

The hammering mechanism 60 comprises a cylinder wall 12 fixed on the side of the air exchanging block 11 far away from the plunger valve 10, an axially-penetrating slideway 21 is arranged in the cylinder wall 12, an impact hammer 14 and a noise reduction block 36 are arranged in the slideway 21 in a sliding mode, the impact hammer 14 is close to the air exchanging block 11 compared with the noise reduction block 36, a spring groove 15 which is far away from the direction of the air exchanging block 11 is arranged in the impact hammer 14, 1 and the noise reduction block 36 are connected together through a noise reduction spring 16, two air passages 13 are symmetrically arranged in the cylinder wall 12 relative to the impact hammer 14, one end of each air passage 13 is communicated with the slideway 21 at the position close to the air exchanging block 11 at the limit, and the opening of each air passage 13 faces the noise reduction block 36.

The dust removing mechanism 61 comprises a clamping rod block 26 fixed on the side, far away from the air exchange block 11, of the cylinder wall 12, an air bag groove 49 is formed in the clamping rod block 26, a pickaxe rod 19 is arranged in the air bag groove 49 in a sliding mode, the pickaxe rod 19 and the inner wall, far away from the cylinder wall 12, of the air bag groove 49 are connected through a return spring 28, a compression air bag 25 is sleeved on the return spring 28, the compression air bag 25 is connected to the inner walls of the pickaxe rod 19 and the air bag groove 49, telescopic air guide pipes 27 are fixedly connected to the side, close to the cylinder wall 12, of the compression air bag 25 and symmetrical to the cylinder wall 12, one-way valves 30 are fixedly arranged at the other ends of the telescopic air guide pipes 27, and each one-way valve 30 is connected to the opening of the corresponding air passage 13.

The dust removing mechanism 61 further comprises two pressure changing cavities 33 arranged on the side, far away from the cylinder wall 12, of the drill rod clamping block 26, the two pressure changing cavities 33 are symmetrical about the pick drill rod 19, the compression air bag 25 is symmetrically provided with two air guide pipes 29 on the side, close to the pressure changing cavities 33, of the pick drill rod 19, the other ends of the two air guide pipes 29 are communicated with the corresponding pressure changing cavities 33 respectively, a windmill shaft 32 is fixedly arranged on each pressure changing cavity 33 and perpendicular to the inner walls of the two sides of the air guide pipes 29, and a windmill 31 is rotatably arranged on each windmill shaft 32.

The dust removing mechanism 61 further comprises a float-sink cover 18 fixedly connected with the side, away from the air guide pipe 29, of the drill rod clamping block 26, the float-sink cover 18 is in a horn shape, a dust suction channel 17 and a dust deposition cavity 20 are arranged in the float-sink cover 18, the dust deposition cavity 20 is closer to the pick drill rod 19 than the dust suction channel 17, two dust suction pipes 34 are symmetrically arranged on the side, close to the float-sink cover 18, of the drill rod clamping block 26 and are communicated with the pick drill rod 19, and the two dust suction pipes 34 are respectively communicated with the corresponding pressure changing cavity 33 and the dust deposition cavity 20.

Initial state: the return spring 28 and the noise reduction spring 16 are both in a normal state, the second air spring 39 is in a compressed state, the first air spring 42 is in a compressed state, and the air inlet groove 24 is communicated with the air pipe.

The working principle is as follows: when gas is introduced into the gas inlet groove 24, the gas is intermittently introduced into the gas control chamber 23 through the intermittent valve 51, when the intermittent valve 51 introduces the gas into the gas control chamber 23 through the gas inlet groove 24, the gas pushes the first gas inlet piston 47 to slide towards the gas outlet piston 46, the first vent hole 38 and the second vent hole 40 are opened, the staggered hole 41 and the gas exchange groove 37 are staggered to close the gas exchange groove 37, the gas enters the gas control chamber 23 through the first vent hole 38 and the second vent hole 40, the second air spring 39 is further compressed, the gas in the gas control chamber 23 presses the two second gas inlet pistons 44 to slide towards the cylinder wall 12, the first air spring 42 is further compressed, the third vent hole 43 is opened, the gas enters the impact hammer 14 in the slide rail 21 through the third vent hole 43, the impact hammer 14 pushes the noise reduction block 36 to strike the pick drill 19, the noise reduction spring 16 is compressed, and the noise reduction of the noise reduction block 36 is realized through the compression of the noise reduction spring 16, the noise of the noise reduction block 36 knocking the cylinder wall 12 is reduced, the noise when the cylinder wall 12 directly knocks the pick rod 19 is reduced, the pick rod 19 slides towards the direction close to the floating and sinking cover 18, the compression air bag 25 and the return spring 28 are compressed, the gas in the compression air bag 25 is pressed into the pressure changing cavity 33 through the air duct 29, the windmill shaft 32 is blown to rotate, the pressure in the pressure changing cavity 33 is reduced, the dust in the working process is sucked into the dust accumulation cavity 20 through the dust suction passage 17, and finally, the dust in the working process is treated in a centralized mode, so that the dust in the working process is prevented from flying around.

When the intermittent valve 51 does not ventilate the air control cavity 23, the second air spring 39 and the first air spring 42 are restored to respectively drive the first air inlet piston 47 and the second air inlet piston 44 to reset, the first vent hole 38 and the third vent hole 43 are closed, meanwhile, the reset spring 28 is restored to drive the pick drill 19 and the compressed air bag 25 to reset, the noise reduction spring 16 is restored to drive the cylinder wall 12 and the noise reduction block 36 to slide towards the direction close to the air exchange block 11, the return speed of the impact hammer 14 can be increased by the noise reduction spring 16, the knocking frequency of the pick drill 19 is increased, the working efficiency is further improved, the gas in the slide way 21 is pressed into the compressed air bag 25 through the air passage 13 and the one-way valve 30 to inflate the compressed air bag 25, the gas in the compressed air bag 25 is filled, the gas in the slide way 21 presses the air outlet piston 46, the second air spring 39 is compressed, the air outlet 45 is opened, and the gas in the slide way 21 is pressed into the air control cavity 23, and discharged from the air vent holes 41 and the air vent grooves 37.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.