CN112296213A

CN112296213A - Auxiliary bending device for reinforcing steel bars for building construction

Info

Publication number: CN112296213A
Application number: CN202011378389.5A
Authority: CN
Inventors: 曹淑华
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-02-02

Abstract

The invention discloses an auxiliary bending device for reinforcing steel bars for building construction, which relates to the related technical field of buildings and comprises a supporting mechanism, a bending seat and a transmission mechanism, wherein the supporting mechanism comprises a supporting chassis, the bending seat is rotatably arranged on the upper end surface of the supporting chassis, the upper end of the bending seat is provided with an adjustable limiting mechanism, the bottom end inside the bending seat is embedded with an adjusting mechanism for adjusting the limiting mechanism, and the transmission mechanism is rotatably arranged at the upper end of the bending seat. The invention relates to an auxiliary bending device for reinforcing steel bars for building construction, which is convenient for accurately adjusting the bending radian according to the bending requirement, can replace manpower to perform bending operation, realizes quick batch bending operation of the reinforcing steel bars, and improves the bending efficiency.

Description

Auxiliary bending device for reinforcing steel bars for building construction

Technical Field

The invention relates to the technical field of buildings, in particular to an auxiliary bending device for a steel bar for building construction.

Background

The reinforcing steel bar bending machine is one of reinforcing steel bar processing machines, but the reinforcing steel bar bending machine for the existing building engineering adopts the traditional reinforcing steel bar bending means to bend the reinforcing steel bar, is not convenient for accurately adjusting the bending radian according to the bending requirement, needs to consume a large amount of manpower to perform bending operation, influences the quick batch bending operation of the reinforcing steel bar, and is low in efficiency, so that the reinforcing steel bar auxiliary bending device for the building construction is designed, and the problems are solved.

Disclosure of Invention

The invention aims to provide an auxiliary bending device for a steel bar for building construction, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a reinforcing steel bar auxiliary bending device for building construction comprises a supporting mechanism, a bending seat and a transmission mechanism, wherein the supporting mechanism comprises a supporting chassis, the bending seat is rotatably arranged on the upper end face of the supporting chassis, an adjustable limiting mechanism is arranged at the upper end of the bending seat, the bending radian can be accurately adjusted according to the bending requirement through the adjustment of the position of the limiting mechanism, a reinforcing steel bar can be used as a rolling leaning foundation through the limiting mechanism to facilitate auxiliary bending operation, an adjusting mechanism for adjusting the limiting mechanism is embedded in the bottom end inside the bending seat, the position of the limiting mechanism is adjusted through the adjusting mechanism in an auxiliary mode, the transmission mechanism is rotatably arranged at the upper end of the bending seat, the bending seat can rotate around the upper end of the supporting chassis to drive the adjusting mechanism to adjust the position of the limiting mechanism, then the reinforcing steel bar is rolled through the transmission mechanism, and the accurate bending operation is facilitated, can replace the manpower to bend the operation, realize the quick operation of bending in batches of reinforcing bar, the efficiency of bending improves.

In a further embodiment, the edge position of the bottom end surface of the supporting chassis is provided with a plurality of uniformly distributed supporting legs, and the supporting legs are arranged at the bottom end of the supporting chassis, so that the whole structure can be supported.

In a further embodiment, the edge position of the upper end of the supporting chassis is provided with first limiting teeth which are distributed annularly, the radial side wall of the bending seat is provided with a positioning mechanism, and the bending seat can be positioned by matching the positioning mechanism with the first limiting teeth, so that the bending seat is prevented from rotating on the supporting chassis when not adjusted to influence the bending operation.

In a further embodiment, positioning mechanism is including installation piece, locating lever and locating piece, the fixed radial lateral wall that sets up at the seat of bending of installation piece, the locating lever slides and runs through the upper and lower lateral wall of installation piece, the fixed bottom face that sets up at the locating lever of locating piece, and the bottom face of locating piece sets up the matching groove that matches the joint with first spacing tooth, and the locating lever can be along the upper and lower pull of installation piece, can drive the adjustment from top to bottom of locating piece, and when upwards adjusting, first spacing tooth can be kept away from in the matching groove of locating piece for the seat of bending can rotate on supporting the chassis, and when adjusting downwards, the matching groove of locating piece can block on first spacing tooth, makes the seat of bending unable rotation on supporting the chassis.

In a further embodiment, a plurality of rectangular sliding grooves which are uniformly distributed in an annular shape are formed in the upper end face of the bending seat, an adjusting groove is formed in the center position of the bottom end face of the bending seat in the same body upward direction, each drawing hole communicated with the inside of the adjusting groove is formed in the bottom end of the rectangular sliding groove, and the limiting mechanism comprises a limiting sliding plate, a drawing rod and a top block and is used for matching bending operation through the limiting mechanism.

In a further embodiment, the limiting sliding plate is slidably clamped inside the rectangular sliding groove, the limiting sliding plate can be horizontally adjusted inside the rectangular sliding groove, so that the major diameter of an annular structure formed by surrounding a plurality of limiting sliding plates can be adjusted at any time, the requirement of bending the reinforcing steel bars is met, two guide rods which are parallel to each other are arranged between the side walls on the two sides of the inside of the rectangular sliding groove, the two guide rods are slidably inserted into the limiting sliding plate, the stability of the limiting sliding plate when the limiting sliding plate slides inside the rectangular sliding groove can be enhanced through the sliding insertion of the guide rods and the limiting sliding plate, one end of each pulling rod is fixedly welded with the bottom end of one side of the limiting sliding plate, the other end of each pulling rod penetrates through the pulling hole in a sliding mode and is fixedly welded with the bottom end of the side wall on one side of the top block, and when the limiting sliding plate is inside the rectangular sliding groove, the ejector block is positioned in the adjusting groove, and one end, far away from the pull rod, of the ejector block inclines towards the inclined plane of 60 degrees towards the lower part in the adjusting groove.

In a further embodiment, a threaded sleeve is fixedly arranged at the bottom end inside the adjusting groove, the adjusting mechanism comprises a threaded rod, a frustum-shaped top disc which is positioned above the threaded sleeve and can be jacked upwards along the inclined surface of the top block is fixedly welded at the top end of the threaded rod, a rectangular guide groove is formed in the bottom end of the threaded rod, a rectangular guide ejector rod is vertically arranged in the center of the top end face of the supporting chassis and is in sliding insertion with the inside of the rectangular guide groove, the threaded rod can be driven to be adjusted through the threaded sleeve by rotating the bending seat, meanwhile, the threaded rod can be adjusted only along the axial direction of the threaded sleeve but cannot rotate along the threaded sleeve by sliding insertion of the rectangular guide ejector rod with the inside of the rectangular guide groove, so that the frustum-shaped top disc can be driven to be axially adjusted, the inclined surface of the jacking block can be jacked, and the transmission can be, therefore, the positions of the plurality of limiting sliding plates in the rectangular sliding grooves can be synchronously adjusted.

In further embodiment, the radial lateral wall upper end position of seat of bending is equipped with the annular support dish, the up end of annular support dish is equipped with the spacing tooth of second that is the annular distribution, drive mechanism is including L type connecting rod, driving motor, screw thread adjusting lever, adjusting sleeve, sliding frame, a roll section of thick bamboo and rotation stand, driving motor has the fluted disc through the power shaft connection, the fluted disc rolls with the spacing tooth roll engagement of second of annular support dish, and driving motor drives the fluted disc and rotates, and pivoted fluted disc can roll along the spacing tooth of second of annular support dish, can drive whole drive mechanism like this and rotate along the radial lateral wall of the seat of bending, and the supplementary roll-in reinforcing bar of being convenient for realizes the operation of bending.

In a further embodiment, the rotating upright post is rotatably arranged at the center position of the top end face of the bending seat, the whole transmission mechanism can rotate along the radial side wall of the bending seat by rotating the upright post, one end of the L-shaped connecting rod is fixedly connected with the radial side wall of the driving motor, the other end of the L-shaped connecting rod is fixedly welded with the top end face of the rotating upright post, one end of the L-shaped connecting rod, which is close to the rotating upright post, is provided with a rotating placing groove, the bottom end face of the L-shaped connecting rod is provided with a communicating groove which is communicated with the inside of the rotating placing groove, one end of the screw thread adjusting rod rotatably extends to the inside of the rotating placing groove and is rotatably inserted with the inner side wall of the rotating placing groove, the adjusting sleeve is rotatably sleeved on the outer wall of the screw thread adjusting rod through internal threads, the sliding frame is slidably sleeved on the outer wall of the L-, and with the inside lateral wall fixed connection's of sliding frame connecting block, a roll extrusion section of thick bamboo rotates through the round pin axle and sets up the bottom face central point at the sliding frame and put, rotate the screw thread regulation pole through bare-handed, can drive the adjusting sleeve along the inside horizontal adjustment who rotates the standing groove, drive the sliding frame through the connecting block simultaneously and slide along the outer wall of L type connecting rod, the sliding frame of slide adjustment can drive the position of an adjustment roll extrusion section of thick bamboo, so that make a roll extrusion section of thick bamboo can roll the pressfitting at the reinforcing bar outer wall of waiting to bend, rotate through whole drive mechanism, the realization is outside the loop configuration who encloses at the spacing slide of a plurality of with the reinforcing bar roll extrusion, realize quick adjustment and bend the.

Compared with the prior art, the invention has the beneficial effects that:

the invention relates to an auxiliary bending device for reinforcing steel bars for building construction, which is convenient for accurately adjusting the bending radian according to the bending requirement, can replace manpower to perform bending operation, realizes quick batch bending operation of the reinforcing steel bars, and improves the bending efficiency.

Drawings

FIG. 1 is an exploded view of the main structure of the present invention;

FIG. 2 is a cross-sectional view of the bending base and support mechanism of the present invention;

fig. 3 is a partial cross-sectional view of the drive mechanism of the present invention.

In the figure: 1. a support mechanism; 11. a support chassis; 12. a first limit tooth; 13. supporting legs; 14. a rectangular guide ejector rod; 2. a positioning mechanism; 21. mounting blocks; 22. positioning a rod; 23. positioning blocks; 3. a bending seat; 31. a rectangular sliding groove; 32. an annular support disc; 33. a second limit tooth; 34. an adjustment groove; 35. a threaded sleeve; 4. a transmission mechanism; 41. an L-shaped connecting rod; 42. a drive motor; 43. a fluted disc; 44. a sliding frame; 45. a rolling cylinder; 46. rotating the upright post; 47. a threaded adjusting rod; 48. rotating the placing groove; 49. a communicating groove; 410. an adjustment sleeve; 411. connecting blocks; 5. an adjustment mechanism; 51. a threaded rod; 52. a rectangular guide groove; 53. a frustum-shaped top plate; 6. a limiting mechanism; 61. a limiting sliding plate; 62. a pull rod; 63. a top block; 64. a guide rod.

Detailed Description

The embodiment of the application solves the problems in the prior art by providing the auxiliary bending device for the reinforcing steel bar for building construction; the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1-3, the embodiment provides an auxiliary bending device for reinforcing steel bars for building construction, which includes a supporting mechanism 1, a bending seat 3 and a transmission mechanism 4, wherein the supporting mechanism 1 includes a supporting chassis 11, the bending seat 3 is rotatably disposed on an upper end surface of the supporting chassis 11, an adjustable limiting mechanism 6 is disposed at an upper end of the bending seat 3, the radian of bending can be accurately adjusted according to the bending requirement by adjusting the position of the limiting mechanism 6, the reinforcing steel bars can be used as a leaning foundation for rolling through the limiting mechanism 6 to facilitate auxiliary bending operation, an adjusting mechanism 5 for adjusting the limiting mechanism 6 is embedded in a bottom end of the bending seat 3, the position of the limiting mechanism 6 is adjusted by the adjusting mechanism 5, the transmission mechanism 4 is rotatably disposed at the upper end of the bending seat 3, the bending seat 3 can rotate around the upper end of the supporting chassis 11 to drive the adjusting mechanism 5 to adjust the position of the limiting mechanism 6, then come the roll-in reinforcing bar through drive mechanism 4, be convenient for carry out accurate operation of bending, can replace the manpower to bend the operation, realize the reinforcing bar and bend the operation in batches fast, bend efficiency and improve.

In order to solve the problem how to be used for matcing the operation of bending through stop gear 6, the rectangle sliding tray 31 that a plurality of is annular evenly distributed is seted up to the up end of seat 3 of bending, seat 3's bottom face central point puts and has upwards seted up adjustment tank 34 with the body, the pull hole that communicates each other with adjustment tank 34 inside is all seted up to the inside bottom of every rectangle sliding tray 31, stop gear 6 is including spacing slide 61, pull pole 62 and kicking block 63, be used for matcing the operation of bending through stop gear 6.

In order to further solve the problem of how to match bending operation through the limiting mechanism 6, the limiting sliding plate 61 is slidably clamped inside the rectangular sliding groove 31, the limiting sliding plate 61 can be horizontally adjusted inside the rectangular sliding groove 31 so as to enable the major diameter of an annular structure formed by the plurality of limiting sliding plates 61 to be adjusted at any time and meet the requirement of bending the reinforcing steel bars, two parallel guide rods 64 are arranged between the side walls of the two sides inside the rectangular sliding groove 31, the two guide rods 64 are both slidably inserted with the limiting sliding plate 61, the stability of the limiting sliding plate 61 when sliding inside the rectangular sliding groove 31 can be enhanced through the slidably inserted connection of the guide rods 64 and the limiting sliding plate 61, one end of the pull rod 62 is fixedly welded with the bottom end of one side of the limiting sliding plate 61, the other end of the pull rod 62 penetrates through a pull hole and is fixedly welded with the bottom end of the side wall of the top block 63, when the limiting sliding plate 61 is inside the rectangular, the top block 63 can be driven by the pull rod 62 to slide freely in the adjusting groove 34, the top block 63 is located in the adjusting groove 34, and one end of the top block 63 away from the pull rod 62 inclines to an inclined plane of 60 degrees towards the lower part in the adjusting groove 34.

In order to solve the problem of how to adjust the position of the limiting mechanism 6 through the adjusting mechanism 5, the bottom end inside the adjusting groove 34 is fixedly provided with a threaded sleeve 35, the adjusting mechanism 5 comprises a threaded rod 51, the top end of the threaded rod 51 is fixedly welded with a frustum-shaped top plate 53 which is positioned above the threaded sleeve 35 and can be jacked upwards along the inclined plane of the jacking block 63, the bottom end of the threaded rod 51 is provided with a rectangular guide groove 52, the center of the top end surface of the supporting chassis 11 is vertically provided with a rectangular guide ejector rod 14, the rectangular guide ejector rod 14 is in sliding insertion with the inside of the rectangular guide groove 52, the threaded rod 51 can be driven to be adjusted through the threaded sleeve 35 by rotating the bending seat 3, and meanwhile, the threaded rod 51 can only be axially adjusted along the threaded sleeve 35 but cannot rotate along the threaded sleeve 35 by sliding insertion of the rectangular guide ejector rod 14 with the inside of the rectangular guide groove 52, so that the frustum, the inclined plane of the jacking block 63 can be jacked up, and the transmission can be realized through the pull rod 62, so that the positions of the plurality of limiting sliding plates 61 in the rectangular sliding grooves 31 can be synchronously adjusted.

In order to solve the problem of how to transmit through the transmission mechanism 4, an annular support plate 32 is arranged at the upper end of the radial side wall of the bending seat 3, second limit teeth 33 distributed annularly are arranged on the upper end face of the annular support plate 32, the transmission mechanism 4 comprises an L-shaped connecting rod 41, a driving motor 42, a thread adjusting rod 47, an adjusting sleeve 410, a sliding frame 44, a rolling cylinder 45 and a rotating upright column 46, the driving motor 42 is connected with a fluted disc 43 through a power shaft, the fluted disc 43 is in rolling engagement with the second limit teeth 33 of the annular support plate 32, the driving motor 42 drives the fluted disc 43 to rotate, and the rotating fluted disc 43 can roll along the second limit teeth 33 of the annular support plate 32, so that the whole transmission mechanism 4 can be driven to rotate along the radial side wall of the bending seat 3, the steel bars can be conveniently rolled in.

In order to further solve the problem of how to transmit through the transmission mechanism 4, the rotating upright column 46 is rotatably arranged at the center position of the top end face of the bending seat 3, the whole transmission mechanism 4 can rotate along the radial side wall of the bending seat 3 through the rotating upright column 46, one end of the L-shaped connecting rod 41 is fixedly connected with the radial side wall of the driving motor 42, the other end of the L-shaped connecting rod is fixedly welded with the top end face of the rotating upright column 46, one end of the L-shaped connecting rod 41 close to the rotating upright column 46 is provided with a rotating placing groove 48, the bottom end face of the L-shaped connecting rod 41 is provided with a communicating groove 49 which is mutually communicated with the inside of the rotating placing groove 48, one end of the thread adjusting rod 47 is rotatably extended to the inside of the rotating placing groove 48 and is rotatably inserted into the inner side wall of the rotating placing groove 48, the adjusting sleeve 410 is rotatably sleeved on the outer wall of, the bottom of the radial side wall of adjusting sleeve 410 is equipped with the inside that slides and run through the intercommunication groove 49, and with the inside lateral wall fixed connection's of sliding frame 44 connecting block 411, roll-in section of thick bamboo 45 rotates through the round pin axle and sets up the bottom face central point at sliding frame 44 and put, rotate screw thread adjusting lever 47 through bare-handed, can drive adjusting sleeve 410 along the inside horizontal adjustment who rotates standing groove 48, drive sliding frame 44 through connecting block 411 simultaneously and slide along the outer wall of L type connecting rod 41, slide adjusting's sliding frame 44 can drive the position of adjusting roll-in section of thick bamboo 45, so that make roll-in section of thick bamboo 45 can roll the pressfitting at the reinforcing bar outer wall of treating bending, rotate through whole drive mechanism 4, the realization is with the reinforcing bar roll-in the annular structure outside that is enclosed by a plurality of spacing slide 61, realize quick.

Example two

Referring to fig. 1, a further improvement is made on the basis of embodiment 1:

in order to solve the problem of how to support the whole mechanism, a plurality of uniformly distributed supporting legs 13 are arranged at the edge position of the bottom end surface of the supporting chassis 11, and the whole structure can be supported by arranging the supporting legs 13 at the bottom end of the supporting chassis 11.

In order to solve the problem of how to avoid fixing the bending seat 3 on the supporting chassis 11 when not adjusting, the edge position of the upper end of the supporting chassis 11 is provided with first limiting teeth 12 which are distributed annularly, the radial side wall of the bending seat 3 is provided with a positioning mechanism 2, the bending seat 3 can be positioned by matching the positioning mechanism 2 with the first limiting teeth 12, and the bending seat 3 is prevented from rotating on the supporting chassis 11 when not adjusting to influence the bending operation.

In order to further solve the problem of how to avoid fixing the bending seat 3 on the supporting chassis 11 when not adjusting, the positioning mechanism 2 comprises an installation block 21, a positioning rod 22 and a positioning block 23, the installation block 21 is fixedly arranged on the radial side wall of the bending seat 3, the positioning rod 22 slidably penetrates through the upper side wall and the lower side wall of the installation block 21, the positioning block 23 is fixedly arranged on the bottom end surface of the positioning rod 22, and the bottom end face of the positioning block 23 is provided with a matching groove matched and clamped with the first limit tooth 12, the positioning rod 22 can be drawn and pulled up and down along the mounting block 21, the positioning block 23 can be driven to be adjusted up and down, when the positioning block is adjusted up, the matching groove of the positioning block 23 can be far away from the first limit tooth 12, so that the bending seat 3 can rotate on the supporting chassis 11, when adjusting downwards, the matching groove of the positioning block 23 can be blocked on the first limit tooth 12, so that the bending base 3 cannot rotate on the support chassis 11.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a bending device is assisted to reinforcing bar for construction, includes supporting mechanism (1), bends seat (3) and drive mechanism (4), its characterized in that: supporting mechanism (1) is including supporting chassis (11), seat (3) of bending rotate and set up the up end in supporting chassis (11), the upper end of seat (3) of bending is equipped with adjustable stop gear (6), the inside bottom of seat (3) of bending is embedded to have adjustment mechanism (5) that are used for adjusting stop gear (6), drive mechanism (4) rotate the upper end that sets up in seat (3) of bending.

2. The auxiliary bending device for the steel bars for building construction according to claim 1, characterized in that: the edge position of the bottom end surface of the supporting chassis (11) is provided with a plurality of supporting legs (13) which are uniformly distributed.

3. The auxiliary bending device for the steel bars for building construction according to claim 2, is characterized in that: the upper end edge position of supporting chassis (11) is equipped with and is the first spacing tooth (12) of annular distribution, the radial lateral wall of bending seat (3) is equipped with positioning mechanism (2).

4. The auxiliary bending device for the steel bars for building construction according to claim 3, is characterized in that: positioning mechanism (2) including installation piece (21), locating lever (22) and locating piece (23), the fixed radial lateral wall that sets up in seat (3) of bending of installation piece (21), locating lever (22) slide and run through the upper and lower lateral wall of installation piece (21), the fixed bottom face that sets up in locating lever (22) of locating piece (23), and the bottom face of locating piece (23) set up the matching groove that matches the joint with first spacing tooth (12).

5. The auxiliary bending device for the steel bars for building construction according to claim 1, characterized in that: the upper end face of the bending seat (3) is provided with a plurality of rectangular sliding grooves (31) which are uniformly distributed in an annular shape, the center of the bottom end face of the bending seat (3) is integrally and upwards provided with an adjusting groove (34), each rectangular sliding groove (31) is internally provided with a drawing hole communicated with the inside of the adjusting groove (34), and the limiting mechanism (6) comprises a limiting sliding plate (61), a drawing rod (62) and a top block (63).

6. The auxiliary bending device for the steel bars for building construction according to claim 5, is characterized in that: spacing slide (61) slip joint is in the inside of rectangle sliding tray (31), be equipped with two parallel guide bar (64) each other between the inside both sides lateral wall of rectangle sliding tray (31), and two guide bar (64) all with spacing slide (61) slip grafting, the one end of pull pole (62) and one side bottom mounting welding of spacing slide (61), the other end slip of pull pole (62) runs through the pull hole, and with kicking block (63) one side lateral wall bottom mounting welding, kicking block (63) are located the inside of adjustment tank (34), and kicking block (63) keep away from the one end of pull pole (62) and incline 60 inclined planes towards adjustment tank (34) inside below.

7. The auxiliary bending device for the steel bars for building construction according to claim 6, is characterized in that: the inside bottom mounting of adjustment tank (34) is equipped with threaded sleeve (35), adjustment mechanism (5) are including threaded rod (51), the top fixed welding of threaded rod (51) has the top that is located threaded sleeve (35), and can be along frustum type overhead pan (53) of the ascending jack-up in inclined plane of kicking block (63), rectangle guide way (52) are seted up to the bottom of threaded rod (51), the top terminal surface center of supporting chassis (11) is for being equipped with rectangle direction ejector pin (14) perpendicularly, and the inside slip grafting of rectangle direction ejector pin (14) and rectangle guide way (52).

8. The auxiliary bending device for the steel bars for building construction according to claim 1, characterized in that: radial lateral wall upper end position of seat (3) of bending is equipped with annular supporting disk (32), the up end of annular supporting disk (32) is equipped with the spacing tooth of second (33) that are the annular and distribute, drive mechanism (4) are including L type connecting rod (41), driving motor (42), screw-thread adjusting pole (47), adjusting sleeve (410), sliding frame (44), roll-in section of thick bamboo (45) and rotation stand (46), driving motor (42) are connected with fluted disc (43) through the power shaft, fluted disc (43) and the spacing tooth of second (33) roll meshing of annular supporting disk (32).

9. The auxiliary bending device for the steel bars for building construction according to claim 8, is characterized in that: the rotating upright post (46) is rotatably arranged at the center of the top end face of the bending seat (3), one end of the L-shaped connecting rod (41) is fixedly connected with the radial side wall of the driving motor (42), the other end of the L-shaped connecting rod is fixedly welded with the top end face of the rotating upright post (46), one end of the L-shaped connecting rod (41) close to the rotating upright post (46) is provided with a rotating standing groove (48), the bottom end face of the L-shaped connecting rod (41) is provided with a communicating groove (49) communicated with the inside of the rotating standing groove (48), one end of the thread adjusting rod (47) is rotatably extended into the rotating standing groove (48) and is rotatably inserted into the inner side wall of the rotating standing groove (48), the adjusting sleeve (410) is rotatably sleeved on the outer wall of the thread adjusting rod (47) through internal threads, the sliding frame (44) is slidably sleeved on the outer wall of the L-shaped connecting rod (, the bottom end of the radial side wall of the adjusting sleeve (410) is provided with a connecting block (411) which penetrates through the inside of the communicating groove (49) in a sliding mode and is fixedly connected with the inner side wall of the sliding frame (44), and the rolling barrel (45) is arranged at the center of the bottom end face of the sliding frame (44) in a rotating mode through a pin shaft.