CN213358275U

CN213358275U - Ground patching device is used in municipal administration

Info

Publication number: CN213358275U
Application number: CN202022064647.4U
Authority: CN
Inventors: 黎明; 李剑成; 王卫东
Original assignee: Guangdong Jiancheng Supervision Consultation Co ltd
Current assignee: Guangdong Jiancheng Supervision Consultation Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-06-04
Anticipated expiration: 2030-09-18

Abstract

The utility model relates to a ground patching device is used in municipal administration, it includes the bottom plate, the universal wheel is installed to the bottom of bottom plate, the top surface edge of bottom plate is provided with the push rod, the top surface of bottom plate is provided with the stirring subassembly, the output of stirring subassembly is installed and is spouted the mud rifle, the top surface edge of bottom plate is provided with the adjusting part that is used for adjusting and spouts mud rifle angle, the top surface of bottom plate is provided with water supply assembly, the spray gun is installed to water supply assembly's output, the top surface edge of bottom plate sets up the fixed subassembly that is used for fixed spray gun. The utility model provides an in the water spray gun install on same patching device with spouting the mud rifle, the staff need not to make a round trip to take the water spray gun or spout the mud rifle, has alleviateed staff's intensity of labour to after the water spray gun washed the crack, it can fill the crack immediately to spout the mud rifle, has effectively improved repair efficiency and repair effect to ground.

Description

Ground patching device is used in municipal administration

Technical Field

The application relates to the field of ground repairing technology, in particular to a municipal ground repairing device.

Background

Cracks are one of the main forms of early-stage diseases of the expressway, and linear cracks such as transverse cracks and longitudinal cracks are the most common. The crack pouring machine has the functions of heating the crack after the steps of slotting and cleaning the crack and uniformly pouring sealant into the crack by using a crack pouring gun to finish the crack repairing work.

Before the crack filling work, need do comprehensive cleaning to the ground surface layer to wash totally with the clear water, however, present crack clearance mode is through the handheld water pistol of staff, aims at the crack with the water pistol and washes, and the handheld mud rifle that spouts of the back of washing again will spout the mud rifle and aim at the crack and fill. In this in-process, the staff need make a round trip to take the spray gun and spout the mud rifle, has greatly improved staff's intensity of labour to after the spray gun cleared up the crack, get again and spout the mud rifle and fill the crack, debris such as rubble are piled up again easily in this process crack again, cause the cement ground after the repair phenomenon that fracture, hollowing appear, lead to the possibility that needs the repeated construction.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the mode that the staff need make a round trip to take spray gun and mud gun has improved staff's intensity of labour.

SUMMERY OF THE UTILITY MODEL

In order to help improving the mode that the staff need make a round trip to take the water gun and spout the mud gun and improved staff's intensity of labour's problem, this application provides a ground patching device is used in municipal administration.

The application provides a ground patching device is used in municipal administration adopts following technical scheme:

the utility model provides a ground patching device is used in municipal administration, includes the bottom plate, the universal wheel is installed to the bottom of bottom plate, the top surface edge of bottom plate is provided with the push rod, the top surface of bottom plate is provided with the stirring subassembly, the mud gun is installed to the output of stirring subassembly, the top surface edge of bottom plate is provided with the adjusting part that is used for adjusting the mud gun angle, the top surface of bottom plate is provided with the water supply subassembly, the water spray gun is installed to the output of water supply subassembly, the top surface edge of bottom plate sets up the fixed subassembly that is used for fixed water spray gun.

Through adopting above-mentioned technical scheme, when repairing the ground, at first the water supply subassembly provides the water source for the spray gun, and the spray gun goes out water, washes the ground crack, clears away fissured rubble or debris etc. then adjusts the spray gun and aims at the crack, and the stirring subassembly supplies cement, and the staff promotes the push rod this moment, makes the spray gun remove along the crack to carry out cement filling to the ground crack, accomplish the filling process to ground repair. The water spraying gun and the mud spraying gun are installed on the same repairing device, workers do not need to take the water spraying gun or the mud spraying gun back and forth, labor intensity of the workers is reduced, after the water spraying gun washes cracks, the mud spraying gun can fill the cracks immediately, repairing effect on the ground is improved, and efficiency of repairing the ground is effectively improved.

It is optional, the stirring subassembly is including installing the mud storage box at the bottom plate top surface, feeder hopper and agitator motor are installed at the top of mud storage box, install central pivot along vertical direction in the mud storage box, agitator motor's output shaft and central pivot fixed connection, the lateral wall of central pivot is fixed with the stirring leaf, the delivery pump is installed to the top surface of bottom plate, be connected with defeated material pipeline between delivery pump and the mud storage box, be connected with defeated material hose between delivery pump and the mud gun of spouting.

Through adopting above-mentioned technical scheme, agitator motor opens, drives the stirring leaf and stirs the cement of keeping in the mud storage box, avoids cement cooling off at the excessive speed, and the defeated material pump can extract the mud in the mud storage box simultaneously, spouts in the crack through spouting the mud rifle to accomplish the fissured repair work in ground. The stirring assembly is simple in structure, and is easy to realize temporary storage of slurry, so that a foundation is laid for use of subsequent slurry.

Optionally, the stirring leaf is including two stirring vane that distribute in central pivot both sides, two stirring vane is the slope setting, two stirring vane sets up to the multiunit, multiunit stirring vane is along the equidistant setting of length direction of central pivot and be the dislocation distribution.

Through adopting above-mentioned technical scheme, because stirring vane is slope tangential mud, such setting helps reducing the effort that the blade received, reduces the obstruction force that central pivot received at the rotation in-process, makes stirring vane's rotation more smooth and easy, and multiunit stirring vane staggered distribution makes the stirring of the mud in the slurry storage box more even simultaneously, has guaranteed the quality of mud to be favorable to subsequent use.

Optionally, the adjusting part is including fixing two poles at the bottom plate top surface, two branch parallel arrangement, two sliding connection has the adjustable shelf between the branch, the adjustable shelf includes the sleeve and fixes the slide bar in the sleeve both sides, the slide bar is kept away from telescopic one end and is run through branch and with branch sliding connection along the horizontal direction, the one end threaded connection that the slide bar extends branch has lock nut, lock nut and the lateral wall looks butt of branch, spout the mud rifle and insert and establish in the sleeve and fix through the retaining member.

Through adopting above-mentioned technical scheme, spout the mud rifle and fix in the sleeve, the adjustable shelf can be followed branch and slided from top to bottom to can follow the axis direction rotation of slide bar, thereby can adjust the height and the angle of spouting the mud rifle, make the output of spouting the mud rifle aim at the crack on ground, so that ground repair. This adjusting part simple structure makes things convenient for the staff to operate, has reduced the necessity that needs the handheld mud gun of staff, has further improved the practicality that the mud gun used.

Optionally, the retaining member includes an L-shaped rod, one end of the L-shaped rod penetrates through the side wall of the sleeve and abuts against the outside of the mud gun, and one end of the L-shaped rod, which is close to the sleeve, is in threaded connection with the sleeve.

Through adopting above-mentioned technical scheme, the setting of L type pole can stabilize the locking and spout the mud rifle, ensures to spout the stability of mud rifle, and the locking mode of L type pole compares with the locking mode of bolt simultaneously, and the staff need not to use extra instrument operation, has still reached laborsaving effect when easy dismounting, has further alleviateed staff's intensity of labour.

Optionally, the water supply assembly is including installing the storage water tank at the bottom plate top surface, the storage water tank is located the side of mud storage tank, miniature air pump is installed at the top of storage water tank, the outlet duct of miniature air pump stretches into in the storage water tank, the water inlet has still been seted up at the top of storage water tank, the top threaded connection of water inlet has the spiral cover, the lateral wall that the storage water tank is close to the bottom is connected with out the water hose, the one end and the spray gun fixed connection of storage water tank are kept away from to the play water hose.

Through adopting above-mentioned technical scheme, the spiral cover covers the water inlet, makes the top of water storage box form an airtight space, and miniature air pump is given vent to anger this moment, and the atmospheric pressure at water storage box top increases, presses the clear water in the water storage box to the play water hose of bottom to make the clear water spout from the spray gun, and then realize the washing to ground crack. This water supply assembly can effectively provide the water source, reduces the necessity that the staff goes to look for the water source and connect conduit, reduces staff's the amount of labour, further improves the efficiency of repairing ground.

Optionally, the fixed subassembly is including fixing the articulated seat at the bottom plate top surface, it has the commentaries on classics board to articulate on the articulated seat, the top surface of commentaries on classics board is installed the mount, fixedly connected with water jet on the mount, the bottom surface of bottom plate still is provided with and is used for the drive to change board pivoted drive assembly.

Through adopting above-mentioned technical scheme, change board and drive assembly combination and use, can adjust the angle of water pistol to wash away ground crack, clear away the rubble etc. in the ground crack, prepare for the basis of the packing of mud.

Optionally, the drive assembly is including installing the fixed plate at the bottom plate top surface, sliding connection has the slider on the fixed plate, the glide direction of slider is mutually perpendicular with the extending direction of the axis of rotation of commentaries on classics board, the articulated connecting rod that is fixed with between the top surface of slider and the bottom of bottom plate, the threaded rod is worn to be equipped with along the glide direction of slider by the fixed plate, the threaded rod runs through fixed plate and slider in proper order, the threaded rod rotates with the fixed plate to be connected, threaded rod and slider threaded connection, the one end outside threaded connection that the slider was kept away from to the threaded rod has lock nut, lock nut and the lateral wall looks butt of.

Through adopting above-mentioned technical scheme, through rotatory threaded rod, drive the slider and slide to will change the board and push up along articulated seat axis of rotation up and open, make the water gun slope aim at the crack downwards, realize washing the crack. This drive assembly is favorable to adjusting the angle of spray gun, uses with the fixed subassembly cooperation simultaneously, has reduced the necessity that needs the handheld spray gun of staff, further alleviates staff's intensity of labour.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the scheme, the water spray gun and the mud spray gun are arranged on the same repairing device, workers do not need to take the water spray gun or the mud spray gun back and forth, the labor intensity of the workers is reduced, and the mud spray gun can fill cracks immediately after the water spray gun washes the cracks, so that the repairing effect on the ground is improved, and the efficiency of repairing the ground is effectively improved;

2. stirring motor opens, drives the stirring leaf and stirs the cement of keeping in the mud storage box, avoids the cement cooling too fast, and the defeated material pump can extract the mud in the mud storage box simultaneously, spouts in the crack through spouting the mud rifle to accomplish the fissured repair work in ground. The stirring assembly is simple in structure, and is easy to realize temporary storage of slurry, so that a foundation is laid for use of subsequent slurry.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is another view of the overall structure of an embodiment of the present application.

Fig. 4 is an enlarged schematic view of a portion B in fig. 3.

Description of reference numerals: 1. a base plate; 11. a universal wheel; 12. a push rod; 21. a slurry storage tank; 22. a stirring motor; 23. a feed hopper; 24. a central rotating shaft; 25. a stirring blade; 26. a delivery pipeline; 27. a delivery pump; 28. a delivery hose; 3. a mud-spraying gun; 41. a strut; 411. a strip-shaped groove; 421. a sleeve; 422. a slide bar; 43. a locking nut; 44. an L-shaped rod; 51. a water storage tank; 52. a micro air pump; 53. a water inlet; 54. screwing a cover; 55. a water outlet hose; 6. a water spray gun; 71. a hinged seat; 72. rotating the plate; 73. fixing the rod; 74. fixing a sleeve; 75. a locking lever; 81. a fixing plate; 82. a slider; 83. a threaded rod; 84. a handle; 85. locking the nut; 86. a connecting rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses ground patching device is used in municipal administration. Referring to the figure, including bottom plate 1, the top surface of bottom plate 1 is provided with the stirring subassembly, and the output of stirring subassembly is connected with spouts mud rifle 3, and the top surface edge of bottom plate 1 is provided with the adjusting part that is used for adjusting 3 angles of spouting mud rifle, and the top surface of bottom plate 1 still is provided with water supply assembly, and water supply assembly's output is connected with spray gun 6, and the top surface edge of bottom plate 1 still is provided with the fixed subassembly that is used for fixed spray gun 6.

The water supply assembly provides clear water for the water spraying gun 6, the position of the water spraying gun 6 is fixed by the fixing assembly, the water spraying gun 6 can be aligned to the crack to be washed, the stirring assembly provides slurry for the mud spraying gun 3, the height and the angle of the mud spraying gun 3 are controlled by the adjusting assembly to be aligned to the crack on the ground, and filling and repairing of the crack on the ground are achieved.

Referring to fig. 1, the stirring assembly includes the thick liquid storage box 21 of installing at bottom plate 1 top surface, and feeder hopper 23 and agitator motor 22 are installed to the top surface of thick liquid storage box 21, and agitator motor 22's output shaft is vertical to run through down and to store up thick liquid box 21 and rotate with thick liquid storage box 21 and be connected, and agitator motor 22's output shaft is fixed with central pivot 24, and the lateral wall of central pivot 24 is provided with the stirring leaf.

Wherein, the stirring leaf is including fixing two stirring vane 25 in the 24 relative both sides of central pivot, and the stirring face of stirring vane 25 is the acute angle setting with the contained angle of vertical face, and two stirring vane 25 set up to the multiunit, and multiunit stirring vane 25 sets up and the dislocation distribution along the equidistant setting of length direction of central pivot 24. This arrangement makes the slurry in the slurry tank 21 more uniformly stirred, thereby facilitating the slurry discharge from the slurry gun 3.

Referring to fig. 1 and 2, a material delivery pump 27 is further fixed on the top surface of the bottom plate 1, a material delivery pipeline 26 is connected between the material delivery pump 27 and the slurry storage tank 21, and a material delivery hose 28 is connected between the material delivery pump 27 and the mud gun 3. Wherein, the adjusting part comprises two parallel supporting rods 41 fixed on the top surface of the bottom plate 1, a movable frame is arranged on the two supporting rods 41, and the mud-spraying gun 3 is arranged on the movable frame.

Referring to fig. 2, the movable frame includes a sleeve 421 and a sliding rod 422 fixed on two opposite outer sides of the sleeve 421, and the sliding rod 422 extends along a radial direction of the sleeve 421. In the mud gun 3 wears to locate sleeve 421, the lateral wall of sleeve 421 is provided with the retaining member that is used for locking mud gun 3. The locking piece comprises an L-shaped rod 44, one end of the L-shaped rod 44 penetrates through the side wall of the sleeve 421 in the radial direction and abuts against the outer side of the mud-spraying gun 3, and meanwhile one end, close to the sleeve 421, of the L-shaped rod 44 is in threaded connection with the outer side wall of the sleeve 421, so that the mud-spraying gun 3 is locked and fixed.

In addition, the last rectangular groove 411 of having seted up of branch 41, rectangular groove 411 runs through branch 41 along the radial of branch 41, rectangular groove 411 extends along the length direction of branch 41, the one end that sleeve 421 was kept away from to slide bar 422 passes rectangular groove 411 and with rectangular groove 411 sliding connection, the one end threaded connection that slide bar 422 extends rectangular groove 411 has lock nut 43, lock nut 43 and the lateral wall butt of branch 41 to realize the movable frame fixed on branch 41. In addition, in this embodiment, the cross section of the sliding rod 422 is circular, so that the movable frame can rotate along the axial direction of the sliding rod 422 and can slide up and down along the elongated slot 411, thereby realizing the adjustment of the up-down position and the rotation angle of the mud-spraying gun 3.

Referring to fig. 3, the water supply assembly includes a water storage tank 51 installed on the top surface of the bottom plate 1, a micro air pump 52 is installed on the top of the water storage tank 51, an air outlet pipe of the micro air pump 52 penetrates through the top side wall of the water storage tank 51 and extends into the water storage tank 51, a water inlet 53 is further formed in the top of the water storage tank 51, a screw cap 54 is connected to the top of the water inlet 53 in a threaded manner, and a water outlet hose 55 is connected between the water storage tank 51 and the water.

The micro air pump 52 is started, and because the top of the water storage tank 51 is in a sealed state, the air pressure at the top of the water storage tank 51 is increased at the moment, and the clean water in the water storage tank 51 is pressed out, so that the water source supply of the water spraying gun 6 is realized. When a water source needs to be supplemented, the rotary cover 54 can be screwed on and off to inject water into the water inlet 53, and when a water supply assembly needs to be used, the rotary cover 54 can be screwed on and off to ensure the sealing property in the water storage tank 51.

Referring to fig. 4, the fixing assembly includes a hinge seat 71 installed at the edge of the top surface of the bottom plate 1, a rotating plate 72 is installed on the hinge seat 71 in a hinged manner, a fixing frame is installed on the top surface of the rotating plate 72, the water spraying gun 6 is installed on the fixing frame, and a driving assembly for driving the rotating plate 72 to rotate is arranged on the bottom surface of the rotating plate 72.

In this embodiment, the mount includes dead lever 73 and fixed cover 74, dead lever 73 is vertical to be installed on the top surface of changeing board 72, dead lever 73 is located the one side of keeping away from changeing board 72 rotation axis, fixed cover 74 horizontal installation is in the one end of changeing board 72 is kept away from to dead lever 73, the extending direction of fixed cover 74 is mutually perpendicular with the rotation axis of changeing board 72, monitor 6 wears to locate fixed cover 74 in, be provided with check lock lever 75 on the lateral wall of fixed cover 74, the lateral wall and the butt of fixed cover 74 are run through to the one end of check lock lever 75 is at monitor 6's lateral wall, check lock lever 75 and the lateral wall threaded connection of fixed cover 74, thereby realize fixed to.

Referring to fig. 4, the driving assembly includes a fixing plate 81 installed on the top surface of the bottom plate 1, a sliding block 82 is connected to the fixing plate 81 in a sliding manner, a sliding direction of the sliding block 82 is perpendicular to an extending direction of a rotation axis of the rotation plate 72, a threaded rod 83 is installed on the fixing plate 81 along the sliding direction of the sliding block 82, the threaded rod 83 sequentially penetrates through the fixing plate 81 and the sliding block 82, the threaded rod 83 is rotatably connected to the fixing plate 81, the threaded rod 83 is in threaded connection with the sliding block 82, a handle 84 is further fixed to one end, away from the hinge seat 71, of the threaded rod 83, a locking nut 85 is connected to one end, extending out of the fixing plate. In addition, a connecting rod 86 is hingedly mounted between the top of the slider 82 and the bottom of the swivel plate 72.

The handle 84 is rotated, the sliding block 82 moves in the direction away from the hinge base 71, the connecting rod 86 pushes the rotating plate 72 upwards at the moment, the rotating plate 72 rotates along the rotating axis, and after the rotating plate is moved to a preset position, the locking nut 85 is screwed down to fix the rotating plate 72, so that the angle of the water spraying gun 6 is adjusted.

Referring to fig. 1, universal wheel 11 is installed to the bottom of bottom plate 1, and the top surface edge that spouts mud gun 3 was kept away from to bottom plate 1 is fixed with push rod 12, has spouted mud gun 3 and water gun 6's angle after the adjustment, and staff's accessible push rod 12 promotes bottom plate 1, makes water gun 6 wash the ground crack, spouts mud gun 3 and fills the ground crack to the realization is to the cracked repair of ground.

The implementation principle of the municipal ground repairing device is as follows: firstly, adjusting the angle of the water spraying gun 6, starting the micro air pump 52, discharging water from the water spraying gun 6, pushing the bottom plate 1 by a worker through the push rod 12, and enabling the water spraying gun 6 to move along the extension direction of the crack, thereby realizing the flushing of the ground crack; then, the height and the angle of the mud-spraying gun 3 are adjusted, the material conveying pump 27 is started, and the staff pushes the bottom plate 1 to enable the mud-spraying gun 3 to move along the extension direction of the crack, so that the ground crack is filled. In this scheme water pistol 6 and spout mud rifle 3 and install on same device, the staff need not to make a round trip to take water pistol 6 or spout mud rifle 3, has alleviateed staff's intensity of labour to after water pistol 6 washed the crack, spout mud rifle 3 and can fill the crack immediately, effectively improved repair efficiency and repair effect to ground.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a ground patching device is used in municipal administration which characterized in that: including bottom plate (1), universal wheel (11) are installed to the bottom of bottom plate (1), the top surface edge of bottom plate (1) is provided with push rod (12), the top surface of bottom plate (1) is provided with the stirring subassembly, the output of stirring subassembly is installed and is spouted mud rifle (3), the top surface edge of bottom plate (1) is provided with the adjusting part that is used for adjusting and spouts mud rifle (3) angle, the top surface of bottom plate (1) is provided with the water supply subassembly, water spraying gun (6) are installed to the output of water supply subassembly, the top surface edge of bottom plate (1) sets up the fixed subassembly that is used for fixed water spraying gun (6).

2. A municipal ground restoration device according to claim 1, wherein: stirring subassembly is including installing storage thick liquid case (21) at bottom plate (1) top surface, feeder hopper (23) and agitator motor (22) are installed at the top of storage thick liquid case (21), install central pivot (24) along vertical direction in storage thick liquid case (21), the output shaft and central pivot (24) fixed connection of agitator motor (22), the lateral wall of central pivot (24) is fixed with the stirring leaf, defeated material pump (27) are installed to the top surface of bottom plate (1), be connected with between defeated material pump (27) and storage thick liquid case (21) defeated material pipeline (26), defeated material pump (27) and spout and be connected with defeated material hose (28) between mud rifle (3).

3. A municipal ground restoration device according to claim 2, wherein: the stirring leaf is including distributing two stirring vane (25) in central pivot (24) both sides, two stirring vane (25) are the slope setting, two stirring vane (25) set up to the multiunit, multiunit stirring vane (25) are along the equidistant setting of length direction of central pivot (24) and are the dislocation distribution.

4. A municipal ground restoration device according to claim 1, wherein: the adjusting part is including fixing two branch (41) at bottom plate (1) top surface, two branch (41) parallel arrangement, two sliding connection has the adjustable shelf between branch (41), the adjustable shelf includes sleeve (421) and fixes slide bar (422) in sleeve (421) both sides, the one end that sleeve (421) were kept away from in slide bar (422) runs through branch (41) and with branch (41) sliding connection along the horizontal direction, slide bar (422) extend one end threaded connection of branch (41) have lock nut (43), lock nut (43) and the lateral wall looks butt of branch (41), it fixes through the retaining member to insert in sleeve (421) and spout mud rifle (3).

5. A municipal ground restoration device according to claim 4, wherein: the retaining member comprises an L-shaped rod (44), one end of the L-shaped rod (44) penetrates through the side wall of the sleeve (421) and abuts against the outer side of the mud spraying gun (3), and one end, close to the sleeve (421), of the L-shaped rod (44) is in threaded connection with the sleeve (421).

6. A municipal ground restoration device according to claim 1, wherein: the water supply assembly is including installing storage water tank (51) at bottom plate (1) top surface, storage water tank (51) are located the side of mud storage box (21), miniature air pump (52) are installed at the top of storage water tank (51), the outlet duct of miniature air pump (52) stretches into in storage water tank (51), water inlet (53) have still been seted up at the top of storage water tank (51), the top threaded connection of water inlet (53) has spiral cover (54), storage water tank (51) are close to the lateral wall of bottom and are connected with out water hose (55), the one end and water pistol (6) fixed connection of storage water tank (51) are kept away from in play water hose (55).

7. A municipal ground restoration device according to claim 1, wherein: fixed subassembly is including fixing articulated seat (71) at bottom plate (1) top surface, articulated on articulated seat (71) have commentaries on classics board (72), the mount is installed to the top surface of commentaries on classics board (72), fixedly connected with water pistol (6) on the mount, the bottom surface of bottom plate (1) still is provided with and is used for the drive to change board (72) pivoted drive assembly.

8. A municipal ground restoration device according to claim 7, wherein: the driving component comprises a fixed plate (81) arranged on the top surface of the bottom plate (1), a sliding block (82) is connected on the fixed plate (81) in a sliding way, the sliding direction of the sliding block (82) is vertical to the extending direction of the rotating axis of the rotating plate (72), a connecting rod (86) is hinged and fixed between the top surface of the sliding block (82) and the bottom of the bottom plate (1), a threaded rod (83) is arranged on the fixed plate (81) along the sliding direction of the sliding block (82) in a penetrating way, the threaded rod (83) penetrates through the fixed plate (81) and the sliding block (82) in sequence, the threaded rod (83) is rotationally connected with the fixed plate (81), the threaded rod (83) is in threaded connection with the sliding block (82), the outer side of one end of the threaded rod (83) far away from the sliding block (82) is connected with a locking nut (85) through threads, the locking nut (85) is abutted against the outer side wall of the fixing plate (81).