1. The utility model provides a cutter suction dredger prevents stifled mechanism, includes connection pad (1), install power shaft (2) and suction dredge (3) on connection pad (1), its characterized in that, the suction dredge end of suction dredge (3) is equipped with prevents stifled mechanism (4), prevent stifled mechanism (4) and include:

the cleaning and plugging component (5) is rotatably arranged in the suction inlet area of the sludge suction pipe (3);

and the transmission assembly (6) is fixedly arranged on the power shaft (2), and the rotation stroke of the transmission assembly drives the cleaning assembly (5) to rotate.

2. The cutter suction dredger anti-blocking mechanism as claimed in claim 1, wherein the cleaning assembly (5) comprises a shaft rod (5.1), a plurality of rod bodies (5.2) are arranged on the shaft rod (5.1), and two ends of the shaft rod (5.1) are fixed with the connecting disc (1) through clamping mechanisms (5.3).

3. A cutter suction dredger anti-clogging mechanism according to claim 2, characterized in that the rotating forward side of the rod body (5.2) is provided with a cutting saw blade (5.21).

4. The cutter suction dredger anti-blocking mechanism according to claim 3, characterized in that the cross section of the rod body (5.2) is an equilateral triangle, and the rod body (5.2) is further provided with a side wing strip (5.22) juxtaposed to the cutting saw blade (5.21).

5. The cutter suction dredger anti-blocking mechanism as claimed in claim 2, wherein the clamping mechanism (5.3) comprises a connecting block (5.31) rotatably connected with the end of the shaft rod (5.1), an installation sleeve (5.32) fixed with the connecting disc (1) is inserted into one end of the connecting block (5.31) in an adaptive manner, and the connecting block (5.31) and the installation sleeve (5.32) are clamped through a limiting mechanism (5.33).

6. The cutter suction dredger anti-blocking mechanism as claimed in claim 5, wherein the limiting mechanism (5.33) comprises a space cavity (5.331) formed in the inner walls of the two sides of the mounting sleeve (5.32), a folding water bag (5.332) is arranged inside the space cavity (5.331), a switch valve (5.333) communicated with the outer side of the mounting sleeve (5.32) is fixedly communicated with one side of the folding water bag (5.332), a hard plate (5.334) is fixed on the other side of the folding water bag (5.332), a limiting pin rod (5.335) movably penetrating through the space cavity (5.331) is fixed on the side of the hard plate (5.334), and the limiting pin rod (5.335) is matched with a limiting hole (5.336) formed in the side of the insertion part (5.34) of the connecting block (5.31).

7. The cutter suction dredger anti-blocking mechanism as claimed in claim 6, wherein a spring (5.337) is movably sleeved on the outer side of the limiting pin (5.335), and one end of the spring (5.337) is fixed with a hard plate (5.334).

8. A cutter suction dredger anti-clogging mechanism according to claim 2, characterized in that the transmission assembly (6) comprises a helical blade (6.1) which is helically fixed to the outside of the power shaft (2), the helical blade (6.1) being in contact with at least one rod body (5.2).

9. The cutter suction dredger anti-blocking mechanism as claimed in claim 8, characterized in that guide plates (6.11) vertically fixed with the connecting disc (1) are symmetrically arranged on two sides of the helical blade (6.1).

10. A cutter suction dredger, characterized in that the cutter suction dredger is provided with an anti-clogging mechanism of the cutter suction dredger according to any one of claims 1-9.

Background

A cutter suction dredger is a common water dredging device, which is mainly characterized in that soil at the bottom of a river or the sea is loosened by a rotating reamer, then the soil and cement are mixed into slurry, the slurry is sucked into a pump body through a mud suction pipe and is sent to a mud discharge area through a mud discharge pipe.

As in the prior patent publication: CN106193153B, the patent includes the hull, the mud cabin has in the hull, the bow of hull articulates there is the mount, be equipped with the dredge pump on the mount, the entry and the one end intercommunication of dredge pipe of dredge pump, the other one end of dredge pipe is equipped with the hank suction head, the hank suction head includes the casing and has the reamer of inhaling the mud passageway, it alternates in the casing to inhale the mud pipe, inhale mud passageway and dredge pipe intercommunication, still be equipped with the drive sleeve pipe in the casing, the drive sleeve pipe box is established outside inhaling the mud pipe, be connected through a plurality of bevel gear transmission between drive sleeve pipe and the reamer, circumference is provided with the ring gear on the lateral surface of drive sleeve pipe, be equipped with hydraulic motor in the casing, the gear has been linked firmly on hydraulic motor's the output shaft, gear and ring gear meshing transmission, still be equipped with hydraulic pump station in the hull, hydraulic pump station passes through hydraulic pipeline and hydraulic motor connects.

In the prior art, silt is sucked into the mud suction pipe, so that the mud blocks are possibly too large and are clamped with the barrier at the end part of the mud suction pipe, the mud suction pipe is blocked, and the normal mud suction work of the cutter suction dredger is obviously hindered, so that the dredging effect of the cutter suction dredger is influenced.

Disclosure of Invention

The invention aims to provide an anti-blocking mechanism of a cutter suction dredger and the cutter suction dredger, so as to solve the defects in the prior art.

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

the utility model provides a cutter suction dredger prevents stifled mechanism, includes the connection pad, install power shaft and suction dredge on the connection pad, the suction dredge end of suction dredge is equipped with prevents stifled mechanism, prevent that stifled mechanism includes:

the cleaning and plugging component is rotatably arranged in the suction inlet area of the sludge suction pipe;

and the transmission assembly is fixedly arranged on the power shaft, and the rotation stroke of the transmission assembly drives the cleaning assembly to rotate.

Preferably, the clearance subassembly is including the axostylus axostyle, be provided with a plurality of body of rod on the axostylus axostyle, the both ends of axostylus axostyle are all fixed mutually with the connection pad through the card solid mechanism.

Preferably, the rotating advancing side of the rod body is provided with a cutting saw blade.

Preferably, the cross section of the rod body is an equilateral triangle, and the rod body is further provided with side strips which are arranged in parallel with the cutting saw blade.

Preferably, the clamping mechanism comprises a connecting block rotatably connected with the end part of the shaft rod, one end of the connecting block is matched and inserted with a mounting sleeve fixed with the connecting disc, and the connecting block and the mounting sleeve are clamped through a limiting mechanism.

Preferably, the limiting mechanism comprises space cavities arranged on the inner walls of the two sides of the mounting sleeve, a folding water bag is arranged inside the space cavities, a switch valve communicated with the outer side of the mounting sleeve is fixedly communicated with one side of the folding water bag, a hard plate is fixed on the other side of the folding water bag, a limiting pin rod movably penetrating through the space cavities is fixed on the side surface of the hard plate, and the limiting pin rod is matched with a limiting hole arranged on the side surface of the insertion part of the connecting block.

Preferably, the spring is movably sleeved on the outer side of the limiting pin rod, and one end of the spring is fixed with the hard plate.

Preferably, the transmission assembly comprises a helical blade spirally fixed on the outer part of the power shaft, and the helical blade is in contact with at least one rod body.

Preferably, guide plates vertically fixed with the connecting disc are symmetrically arranged on two sides of the spiral blade.

Preferably, the cutter suction dredger is provided with the anti-blocking mechanism.

In the technical scheme, in the anti-blocking mechanism of the cutter suction dredger provided by the invention, the rotating force of the power shaft is continuously converted into the driving force for the operation of the cleaning assembly through the transmission assembly, so that the cleaning assembly can continuously clean the suction area of the suction inlet of the dredge pipe, any blocked mud blocks and the like in the area can be timely removed, the mud suction process of the suction inlet of the dredge pipe can be continuously kept smooth, and the blockage at the suction inlet end of the dredge pipe can be effectively prevented.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a three-dimensional structure view of an anti-clogging mechanism of a cutter suction dredger according to the present invention;

FIG. 2 is a schematic cross-sectional view of a shaft lever of an anti-blocking mechanism of a cutter suction dredger according to the present invention;

FIG. 3 is an enlarged view taken at A of FIG. 2 according to the present invention;

FIG. 4 is a schematic perspective view of a helical blade of an anti-clogging mechanism of a cutter suction dredger according to the present invention;

FIG. 5 is a schematic view of a partial three-dimensional structure of a rod body of the cutter suction dredger anti-blocking mechanism of the present invention;

FIG. 6 is a schematic view of a three-dimensional structure of a connecting block of the cutter suction dredger anti-blocking mechanism of the present invention;

FIG. 7 is a schematic view of a three-dimensional structure of an installation sleeve of the cutter suction dredger anti-blocking mechanism of the invention;

FIG. 8 is a schematic sectional view of a mounting sleeve of an anti-blocking mechanism of a cutter suction dredger according to the present invention.

Description of reference numerals:

1. a connecting disc; 2. a power shaft; 3. a mud suction pipe; 4. an anti-blocking mechanism; 5. a clearing assembly; 5.1, shaft lever; 5.11, mounting a ring; 5.12, an annular groove; 5.13, placing a groove; 3.131, cushion blocks; 5.14, a barrier strip block; 5.15, positioning rods; 5.16, arc-shaped rods; 5.17, a spring; 5.18, elastic bands; 5.19, blocking; 5.2, a rod body; 5.21, cutting the saw blade; 5.22, side flaps; 5.3, a clamping mechanism; 5.31, connecting blocks; 5.32, mounting a sleeve; 5.321, block body; 5.322, a socket; 5.33, a limiting mechanism; 5.34, a plug part; 5.341, a first panel; 5.342, a second panel; 5.331, a space cavity; 5.332, folding water bag; 5.333, a switch valve; 5.334, hard plate; 5.335, limit pin rods; 5.336, a limiting hole; 5.337, a spring; 5.4, mounting grooves; 5.5, rotating the roller; 6. a transmission assembly; 6.1, helical blades; 6.11, a guide plate.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

Referring to fig. 1-8, an anti-blocking mechanism for a cutter suction dredger according to an embodiment of the present invention includes a connecting disc 1, a power shaft 2 and a sludge suction pipe 3 are installed on the connecting disc 1, an anti-blocking mechanism 4 is installed at a sludge suction end of the sludge suction pipe 3, and the anti-blocking mechanism 4 includes:

a cleaning component 5 which is rotatablely arranged at the suction inlet area of the sludge suction pipe 3;

and the transmission assembly 6 is fixedly arranged on the power shaft 2, and the rotation stroke of the transmission assembly drives the cleaning assembly 5 to rotate.

Specifically, at the actual mud suction in-process of mud suction pipe 3, owing to 3 tip of mud suction pipe are provided with a plurality of grid pieces, have the mud piece too big easily, the condition that big size hard matter etc. caused 3 clogs of mud suction pipe, through setting up anti-blocking mechanism 4 for the mud suction end of mud suction pipe 3 keeps unobstructed state, and the mud suction pipe 3 of being convenient for normally inhales mud.

Specifically, the connecting disc 1 is perpendicular to the power shaft 2 and the mud suction pipe 3, the side face of the connecting disc 1 is fixed with the ship body, the power shaft 2 is located at the top of the mud suction pipe 3 and is parallel to the mud suction pipe 3, the power shaft 2 movably penetrates through the connecting disc 1, one end of the power shaft 2 is fixed with the reamer head, and the other end of the power shaft 2 is connected with the power output part of the ship body.

The cleaning and plugging component 5 is a rotating part, generally speaking, the cleaning and plugging component 5 comprises a rotating shaft and a cleaning and plugging structure arranged on the rotating shaft, the cleaning and plugging is realized by the rotation of the cleaning and plugging structure, the rotating stroke of the cleaning and plugging structure covers the suction inlet of the sludge suction pipe 3, when the suction inlet is blocked, the cleaning and plugging can be performed by the rotation of the cleaning and plugging structure, the cleaning and plugging component 5 is aligned and parallel to the middle of the suction inlet of the sludge suction pipe 3, so that the maximum range blockage cleaning can be performed on the suction inlet region of the sludge suction pipe 3, the suction inlet of the sludge suction pipe 3 is a long-strip rectangular opening, the suction region of the suction inlet of the sludge suction pipe 3 is in the cleaning range of the cleaning and plugging component 5, the whole length value of the cleaning and plugging component 5 is greater than the maximum length of the suction inlet of the sludge suction pipe 3, and the cleaning and plugging component 5 can be installed in a covering mode on the suction region of the suction inlet of the sludge suction pipe 3.

The spiral structure of transmission subassembly 6 on power axle 2 for setting up, the spiral structure is along with power axle 2's rotation to be used for driving clearance subassembly 5 normal operating, utilize power axle 2's turning force, carry out rational utilization to power axle 2's power, make power axle 2's utilization ratio promote, also need not additionally to be equipped with the power supply, the energy saving for clearance subassembly 5.

In the actual work process, transmission assembly 6 continuously turns into the 2 turning force of power shaft and drives power to clearance assembly 5 moving for clearance assembly 5 continuously clears up the suction area of the sunction inlet of suction pipe 3, in time clears away arbitrary jam mud piece that exists in this area, and the mud suction process that continuously keeps the sunction inlet of suction pipe 3 keeps unobstructed, and the effectual sunction inlet end that prevents suction pipe 3 appears the jam condition.

As a preferable technical scheme of the embodiment, the cleaning assembly 5 comprises a shaft rod 5.1, the shaft rod 5.1 is parallel to the side surface of the connecting disc 1 and the suction inlet of the sludge suction pipe 3 and keeps a gap, the distance between each part of the shaft rod 5.1 and the connecting disc 1 is ensured to be consistent, a plurality of rod bodies 5.2 are arranged on the shaft rod 5.1, the cleaning range and the cleaning effect of the shaft rod 5.1 during rotation are enlarged, the motion tracks of the rod bodies 5.2 are staggered with the pipe wall of the sludge suction pipe 3 and the grid sheets to prevent collision with the rod bodies 5.2, the rod bodies 5.2 can be ensured to move along with the normal operation of the shaft rod 5.1, both ends of the shaft rod 5.1 are fixed with the connecting disc 1 through clamping mechanisms 5.3, therefore, the position of the shaft lever 5.1 on the side surface of the connecting disc 1 is determined and limited, the two clamping and fixing mechanisms 5.3 keep the same horizontal height on the connecting disc 1, and the shaft lever 5.1 is matched with the effect that the suction inlet of the sludge suction pipe 3 is parallel.

As the preferred technical scheme of this embodiment, the side is advanced in the rotation of the body of rod 5.2 is fixed with cutting saw blade 5.21, thereby when the body of rod 5.2 contacts with the plug, cutting saw blade 5.21 has increased the sharpness of the side is advanced in the rotation of the body of rod 5.2 this moment, make the rotation of the body of rod 5.2 side of advancing have good cutting effect, be favorable to carrying out the breakage to the plug, promote the effect that the body of rod 5.2 cleared up the plug, specifically, the body of rod 5.2 is the triangular prism body of rod, the body of rod 5.2 side of advancing is one of the edge of the body of rod 5.2, the draw-in groove mouth with cutting saw blade 5.21 looks adaptation is seted up in body of rod 5.2 side of advancing department, cutting saw blade 5.21 carries out the joint installation with the draw-in groove mouth position through rust-resistant bolt and fixes, be convenient for the dismouting change and the maintenance of cutting saw blade 5.21.

Preferably, referring to fig. 5, the cross section of the end of the cutting saw blade 5.21 is an equilateral triangle, and the side surface of the cutting saw blade 5.21 is flush with the side surface of the rod body 5.2, so that the cutting saw blade 5.21 has good deformation resistance when cutting, the rigidity of the cutting saw blade 5.21 is improved, the cutting saw blade 5.21 is prevented from being broken and damaged, and the service life of the cutting saw blade 5.21 is prolonged.

Wherein, the mounting groove 5.4 has been seted up on the back side that body of rod 5.2 and helical blade 6.1 contacted, the inside rotation of mounting groove 5.4 installs rotor roller 5.5, the length direction of rotor roller 5.5 and mounting groove 5.4 all is parallel with the length direction of body of rod 5.2, the surface of rotor roller 5.5 is the smooth surface, thereby reduce the frictional resistance when helical blade 6.1 contacts, the surface protrusion in the notch of mounting groove 5.4 of rotor roller 5.5, keep certain clearance with body of rod 5.2 when making helical blade 6.1 and rotor roller 5.5 contact, in the in-service use, helical blade 6.1 directly contacts with rotor roller 5.5 surface on the body of rod 5.2, when guaranteeing that body of rod 5.2 receives good drive power, also stand wear and tear the guard action to body of rod 5.2 well.

As a preferred technical solution of this embodiment, the rod body 5.2 is further provided with side strips 5.22 arranged in parallel with the cutting saw blade 5.21, the side strips 5.22 are parallel to the cutting saw blade 5.21, the side strips 5.22 are fixed to the rod body 5.2, the number of the side strips 5.22 is at least two, the side strips 5.22 are close to edges at two sides of the mounting groove 5.4 on the rod body 5.2, and the side strips 5.22 are preferably straight strips, so as to increase the spreading width of the rod body 5.2, and enable the rod body 5.2 to have an effect of assisting the entry of fine soil into the mud suction pipe 3.

As a preferred technical solution of this embodiment, the clamping and fixing mechanism 5.3 includes a connecting block 5.31 rotatably connected to an end of the shaft 5.1, preferably, referring to fig. 6, a side surface of the connecting block 5.31 is perpendicular to the shaft 5.1, a side end of the connecting block 5.31 is fixed with an inserting portion 5.34, the inserting portion 5.34 is formed by vertically fixing a first plate 5.341 and a second plate 5.342, wherein the first plate 5.341 is flush and fixed with the end of the connecting block 5.31, a side surface of a plate body of the second plate 5.342 is parallel to the shaft 5.1, one end of the connecting block 5.31 is adapted to be inserted into a mounting sleeve 5.32 fixed with the connecting plate 1, the mounting sleeve 5.32 includes a block 5.321 fixed with the connecting plate 1, a plurality of inserting ports 5.322 uniformly distributed in a direction perpendicular to the side surface of the connecting plate 1 are formed at a top of the block 5.321, during actual use, according to actual requirements, the inserting ports 5.322 at positions corresponding to the second plate 5.342 on the mounting sleeve 5.34 can be inserted into the mounting sleeve 5.32, thereby can control the installation distance of axostylus axostyle 5.1 and connection pad 1 to being convenient for change the regulation to the clearance scope position of clearance subassembly 5 in the sunction inlet position of mud suction pipe 3, passing through stop gear 5.33 looks joint between connecting block 5.31 and the installation cover 5.32, thereby strengthening the stability between connecting block 5.31 and the installation cover 5.32.

As a preferable technical solution of this embodiment, the limiting mechanism 5.33 includes a space cavity 5.331 opened on the inner walls of both sides of the mounting sleeve 5.32, the length of the space cavity 5.331 is greater than the length of the distance between the head and the tail of the plurality of insertion ports 5.322 uniformly distributed in the vertical direction of the side surface of the connection disc 1, so as to ensure that the space cavity 5.331 can cover and act on any insertion port 5.322, a folding water bag 5.332 is disposed inside the space cavity 5.331, the folding water bag 5.332 is preferably an inelastic water bag, so as to avoid elastic deformation of the folding water bag 5.332 and ensure a good pushing effect, a switch valve 5.333 communicated with the outside of the mounting sleeve 5.32 is fixedly communicated with one side of the folding water bag 5.332, the end of the switch valve 5.333 is flush with the mounting sleeve 5.32, which is favorable for avoiding the situation that the switch valve 5.333 extends out and is scratched and damaged, a hard plate 5.334 is fixed on the other side of the folding water bag 5.332, so as to increase the hardness of the contact end of the folding water bag 5.332 and the limiting pin 5.335, the folding water sac 5.332 is prevented from being broken by a folding water sac 5.332 when the limiting pin rod 5.335 is pushed, the edge of the hard plate 5.334 is in adaptive clamping connection with the inner wall surface of the space cavity 5.331, so that the hard plate 5.334 is kept in a state of being vertical to the inner wall of the space cavity 5.331 in the moving process and is beneficial to pushing the limiting pin rod 5.335, a limiting pin rod 5.335 which movably penetrates through the space cavity 5.331 is fixed on the side surface of the hard plate 5.334, the limiting pin rod 5.335 is in adaptive splicing connection with a limiting hole 5.336 which is arranged on the side surface of the splicing part 5.34 of the connecting block 5.31, the limiting hole 5.336 is arranged on the side surface of the plate body of the second plate 5.342, the opening of the limiting hole 5.336 is a chamfer opening and is beneficial to being in positioning splicing connection with the limiting pin rod 5.335, in the actual use process, after the splicing part 5.34 is spliced with the splicing opening 5.322 in the corresponding position, the folding water sac 5.332 is filled with water by the switch valve 5.333, and the folding water sac 5.332 is expanded under the action, folding water pocket 5.332 extrudees promotion to spacing pin pole 5.335 through hardboard 5.334 for spacing pin pole 5.335 pegs graft mutually with the spacing hole 5.336 of grafting portion 5.34 side, thereby accomplished and further spacing between grafting portion 5.34 and the installation cover 5.32, the fastness of being connected between grafting portion 5.34 and the installation cover 5.32 has been improved, when needs are relieved the limit, it can to open switch valve 5.333 makes the water in folding water pocket 5.332 discharge.

As a preferable technical solution of this embodiment, the spring 5.337 is movably sleeved outside the limit pin 5.335, one end of the spring 5.337 is fixed to the hard plate 5.334, when water in the folded water bag 5.332 is drained, under the action of the elastic restoring force of the spring 5.337, the hard plate 5.334 drives the limit pin 5.335 to return to the initial position, so that the limit pin 5.335 is separated from the limit hole 5.336 on the side surface of the insertion part 5.34.

As the preferred technical scheme of this embodiment, transmission assembly 6 is including the spiral fix in power shaft 2 outside helical blade 6.1, helical blade 6.1 contacts with at least one body of rod 5.2, the outside limit of helical blade 6.1 keeps the equidistance state with the reamer sword on the corresponding reamer head, thereby under the condition that does not influence the reamer sword on the reamer head normal operating, helical blade 6.1 maximize occupies the space between power shaft 2 and the reamer head, thereby helical blade 6.1 plays the suction effect with the mud piece cooperation suction pipe 3 of digging, further promotes the mud piece and sends into in suction pipe 3, improves the mud suction effect of suction pipe 3.

As a preferable technical scheme of the embodiment, guide plates 6.11 vertically fixed with the connecting disc 1 are symmetrically arranged on two sides of the spiral blade 6.1, the guide plates 6.11 are distributed on the connecting disc 1 in an inverted eight shape, and the bottom ends of the guide plates 6.11 and the clamping and fixing mechanism 5.3 are on the same gravity vertical line, so that part of mud blocks floating above the power shaft 2 due to digging inertia of the reamer head slide to the suction port of the mud suction pipe 3 along the guide plates 6.11 in the dropping process of the mud blocks.

Wherein, the outer side of the shaft lever 5.1 is movably sleeved with a plurality of annular structures, the annular structures are connected with the shaft lever 5.1 through an elastic damping structure, thereby realizing the function of being connected with the rod body 5.2 at the outer side of the shaft lever 5.1, the preferable annular structures are mounting rings 5.11, the outer side of the mounting rings 5.11 is fixed with a plurality of rod bodies 5.2 which are uniformly distributed, the elastic damping structure comprises a ring groove 5.12 arranged at the outer side of the shaft lever 5.1, a plurality of placing grooves 5.13 are uniformly arranged inside the ring groove 5.12, the placing grooves 5.13 refer to figure 3, two right-angle sides of the placing grooves 5.13 are respectively fixed with a cushion block 5.131, a barrier strip block 5.14 which is rotatably arranged inside the placing groove 5.13, a positioning rod 5.15 which is fixed with the placing groove 5.13 is movably penetrated through the side surface of the barrier strip block 5.14, a plurality of arc-shaped rods 5.16 are movably penetrated through the parallel surfaces of the positioning rod 5.15, the end parts of the arc-shaped rods 5.16 are sleeved with the cushion blocks 5.131 which are fixed with the adjacent springs 355.17, one end of the barrier strip block 5.14 is fixed with the placing groove 5.13 through the elastic belt 5.18, one side of the other end of the barrier strip block 5.14 is provided with a stop block 5.19 fixed with the inner wall of the mounting ring 5.11, in addition, the shaft rod 5.1 is positioned at a position right below the power shaft 2, the shaft rod 5.1 is directly fixed with the rod body 5.2, in the actual use process, the rod body 5.2 at the position drives the shaft rod 5.1 to rotate under the pushing of the helical blade 6.1, simultaneously, under the action of the barrier strip block 5.14 and the stop block 5.19, the rod body 5.2 on the mounting ring 5.11 rotates synchronously along with the shaft rod 5.1, when the rod body 5.2 on the mounting ring 5.11 cannot advance due to large resistance, the acting force between the barrier strip block 5.14 and the stop block 5.19 is larger than the elastic resistance of the spring 5.17 and the elastic belt 5.18, so that the barrier strip block 5.14 deflects to shrink into the placing groove 5.13, and the reverse rotation of the mounting ring 5.11 and the corresponding rod body 5.2, the rod body 5.2 outside the mounting ring 5.11 plays a role in unloading force and overload protection when the stress is overlarge.

Each group of the rod bodies 5.2 are connected to the same annular structure, and the annular structures are independent from each other and do not transmit, if the annular structures are mutually abutted only by the end parts, or a gap is formed between the end parts of the annular structures, so that the rod bodies 5.2 of the embodiment are divided into two types: in the embodiment, when a certain group of passive rods is clamped, only the group of passive rods stops rotating, the active rods and other passive rods can normally rotate, if the active rods are clamped, all the rods 5.2 stop rotating, but under any condition, the clamped passive rods can be effectively prevented from being broken or bent and deformed.

The invention also provides a cutter suction dredger which is provided with the anti-blocking mechanism.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.