Automobile battery tray aluminum profile machining tool

Abstract

The utility model provides an automobile battery tray aluminum profile machining tool which comprises a collecting box used for collecting sweeps generated in the machining process of a battery tray and an overturning assembly rotationally connected into the collecting box, and the collecting box is used for collecting the sweeps generated in the machining process of the battery tray. The turnover assembly drives the machined battery tray to turn over clockwise in the collecting box, the rotating shaft rotates in the collecting box to drive the bearing tray to deviate, the machined battery tray moves along with the bearing tray, and after the bearing tray rotates by 180 degrees, waste chips left in the battery tray fall into the collecting box to be collected. Due to the fact that the bearing tray of the collecting box is designed in a wrapping mode, in the machining process, splashed sweeps can directly fall into the collecting box, the sweeps generated in the aluminum profile tray machining process are prevented from being splashed everywhere, and the problem that the sweeps are inconvenient to clean is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum profile processing, in particular to a tool for processing aluminum profiles of automobile battery trays. Background Art

[0002] Batteries are widely used in automobiles. When installing batteries, it is necessary to ensure the installation stability of the batteries. Therefore, aluminum profile trays are used to support the batteries.

[0003] Among them, aluminum profiles are the main raw material for battery trays. During the production and processing of aluminum profile trays, machine tools are used to open grooves corresponding to the batteries on the aluminum profile blanks. During the processing, tooling mechanisms are needed to fix the aluminum profile blanks. As the machine tool processing continues, the waste chips cut from the aluminum profile blanks will be scattered everywhere due to their small size. Some waste chips will also remain in the cavity of the aluminum profile, increasing the difficulty of cleaning. Therefore, we propose a processing tool for aluminum profiles for automotive battery trays. Utility Model Content

[0004] The purpose of the utility model is to provide a tool for processing aluminum profiles of automobile battery trays, which can centrally collect waste chips generated during the processing of the battery trays.

[0005] The utility model provides a tool for processing aluminum profiles of automobile battery trays, comprising:

[0006] A collection box for collecting waste scraps generated during the processing of the battery tray;

[0007] A turning assembly, the turning assembly being rotatably connected to the collection box, the turning assembly driving the processed battery tray to turn clockwise in the collection box;

[0008] The flip assembly includes a rotating shaft, an ear plate, a positioning pin and a carrying tray;

[0009] The rotating shaft is rotatably connected to the collection box, the ear plate is fixedly connected to the rotating shaft, the ear plate is connected to the collection box via the positioning pin, and the carrying tray is fixedly connected to the rotating shaft.

[0010] Preferably, a fixing component is installed on the carrying tray;

[0011] The fixing assembly fixes the processed battery tray on the carrying tray;

[0012] The fixing assembly includes a threaded sleeve, a connecting rod, a sliding member and a locking member;

[0013] The threaded sleeve is fixedly connected in the carrying tray, the connecting rod and the threaded sleeve are threadedly connected, the sliding member is sleeved on the connecting rod, the sliding member is used to adjust the position of the locking member, the locking member is threadedly connected in the sliding member, and the locking member is used to fix the position of the processed battery tray.

[0014] Preferably, the sliding member includes a slider, a limit pin and a support plate;

[0015] The slider is sleeve-connected to the connecting rod, the slider is connected to the connecting rod via the limit pin, the support plate is fixedly connected to the slider, and the support plate is used to carry the locking member.

[0016] Preferably, the locking member comprises a threaded rod, a hand wheel and a rubber head;

[0017] The threaded rod is threadedly connected to the support plate, one end of the threaded rod is fixedly connected to the hand wheel, and the other end of the threaded rod is fixedly connected to the rubber head.

[0018] Preferably, a driving assembly is installed on the rotating shaft;

[0019] The driving assembly is used to provide power for the rotation of the rotating shaft;

[0020] The driving assembly includes a gear, a rack, a telescopic member and a connecting member;

[0021] The gear is fixedly connected to the rotating shaft, the rack is meshedly connected to the gear, the telescopic member is fixedly connected to the rack, and the telescopic member is connected to the collection box via the connecting member.

[0022] Preferably, the connecting member includes a clamp and a bolt;

[0023] The clamp is fixedly connected to the telescopic member, and the clamp is connected to the collection box via the bolt.

[0024] Preferably, the bearing pad is fixedly connected to the collection box, and a mounting slot is provided in the bearing pad.

[0025] Preferably, an opening and closing assembly is installed on the bearing pad;

[0026] The opening and closing assembly is used to close the bottom of the collection box;

[0027] The opening and closing assembly includes a crossbar, a sealing plate and a fixing member;

[0028] The cross bar is fixedly connected to the bearing pad, the sealing plate is rotatably connected to the cross bar, and the sealing plate is positioned in use in the bearing pad by the fixing member.

[0029] Preferably, the fixing member includes a support rod, a ferrule and a cylindrical pin;

[0030] The support rod is fixedly connected to the bearing pad, the clamping sleeve is sleeved on the support rod, and the cylindrical pin and the clamping sleeve are fixedly connected.

[0031] Preferably, an adjustment component is provided in the bearing pad;

[0032] The adjustment assembly is used to control the use height of the carrying tray;

[0033] The adjustment assembly includes a push rod and an anti-slip pad;

[0034] The push rod and the bearing pad are threadedly connected, the anti-skid pad is fixedly connected to the push rod, and the anti-skid pad and the bearing pad are sleeve-connected.

[0035] This utility model provides an improved aluminum profile processing tool for automobile battery trays, which has the following improvements and advantages compared with the existing technology:

[0036] Through the coordinated use of the collection box, rotating shaft, ear plate, positioning pin and carrying tray, the rotating shaft rotates in the collection box to drive the carrying tray to shift, and the processed battery tray moves with the carrying tray. When the carrying tray rotates 180 degrees, the waste chips retained in the battery tray fall into the collection box for collection. Since the collection box adopts a wrapping design for the carrying tray, during the processing, the waste chips splashed out will fall directly into the collection box, preventing the waste chips generated during the processing of the aluminum profile tray from splashing everywhere, and solving the problem of inconvenient waste chip cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 This is a schematic diagram of the structure of the utility model;

[0039] Figure 2 This is a schematic structural diagram of the rotating shaft, ear plate and positioning pin of the utility model;

[0040] Figure 3 This is a schematic diagram of the structure of the rack, gear and rotating shaft of the utility model;

[0041] Figure 4This is a schematic structural diagram of the connecting rod, sliding member and locking member of the utility model;

[0042] Figure 5 This is a structural diagram of the load-bearing pad, crossbar and sealing plate of the utility model;

[0043] Figure 6 This is a structural diagram of the support rod, ferrule and cylindrical pin of the utility model.

[0044] Description of reference numerals:

[0045] 1-collection box, 2-flip assembly, 21-rotating shaft, 22-ear plate, 23-locating pin, 24-carrying tray, 3-fixing assembly, 31-threaded sleeve, 32-connecting rod, 33-sliding part, 331-sliding block, 332-limiting pin, 333-support plate, 34-locking part, 341-threaded rod, 342-handwheel, 343-rubber head, 4-driving assembly, 41-gear, 42-rack, 43-telescopic part, 44-connecting part, 441-clamp, 442-bolt, 5-carrying pad, 51-mounting slide, 6-opening and closing assembly, 61-cross bar, 62-sealing plate, 63-fixing part, 631-support rod, 632-card sleeve, 633-cylindrical pin, 7-adjusting part, 71-top rod, 72-anti-slip pad. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be understood that the terms "center" - "longitudinal" - "transverse" - "length" - "width" - "thickness" - "up" - "down" - "front" - "back" - "left" - "right" - "vertical" - "horizontal" - "top" - "bottom" - "inside" - "outside" - "clockwise" - "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation - be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0048] In the description of the present invention, it should be understood that the terms "first"-"second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first"-"second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed"-"connected"-"connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0049] In this embodiment, if Figure 1 and Figure 2 As shown, a tool for processing aluminum profiles of automobile battery trays includes a collection box 1, which collects waste chips generated during the processing of the battery tray, a flip assembly 2, which is rotatably connected to the collection box 1, and the flip assembly 2 drives the processed battery tray to flip clockwise in the collection box 1. The flip assembly 2 includes a rotating shaft 21, an ear plate 22, a positioning pin 23 and a carrying tray 24. The rotating shaft 21 is rotatably connected to the collection box 1, the ear plate 22 is fixedly connected to the rotating shaft 21, the ear plate 22 is connected to the collection box 1 through the positioning pin 23, and the carrying tray 24 is fixedly connected to the rotating shaft 21.

[0050] Therefore, when processing the battery tray mounted on the carrying tray 24, the collection box 1 wrapped around the carrying tray 24 can directly collect the waste chips. When some waste chips remain in the groove of the battery tray, the rotating shaft 21 drives the carrying tray 24 to rotate clockwise, and the battery tray fixed on the carrying tray 24 is flipped 180 degrees, and the waste chips attached to the battery tray fall into the collection box 1 for collection, thereby preventing the waste chips from flying around. When the positioning pins 23 are connected to the threaded holes at different positions on the collection box 1, the carrying tray 24 can be in a tilted state, so that the battery tray being processed is in a tilted state. At this time, the tool on the machine tool can perform bevel processing on the aluminum profile;

[0051] Furthermore, a conical groove is machined at the bottom of the cavity of the collection box 1 for discharging waste chips, and threaded holes are distributed in a ring shape on the inner side of the collection box 1. The rotating shaft 21 rotates in the collection box 1 through a bearing. The supporting tray 24 is used to fix the aluminum profile raw material for manufacturing the battery tray. The ear plate 22 is arranged between the supporting tray 24 and the collection box 1. The outer wall of the positioning pin 23 is machined with threads, and the positioning pin 23 is used to fix the installation position of the ear plate 22.

[0052] In some embodiments, as Figure 1 and Figure 4 As shown, a fixing component 3 is installed on the carrying tray 24, and the fixing component 3 fixes the processed battery tray on the carrying tray 24. The fixing component 3 includes a threaded sleeve 31, a connecting rod 32, a sliding member 33 and a locking member 34. The threaded sleeve 31 is fixedly connected to the carrying tray 24, the connecting rod 32 and the threaded sleeve 31 are threadedly connected, the sliding member 33 is sleeved on the connecting rod 32, the sliding member 33 is used to adjust the position of the locking member 34, the locking member 34 is threadedly connected to the sliding member 33, and the locking member 34 is used to fix the position of the processed battery tray.

[0053] Furthermore, the threaded sleeves 31 are distributed around the carrying tray 24 and at the center line. The bottom end of the connecting rod 32 is processed with threads. The sliding member 33 moves up and down along the outer wall of the connecting rod 32. The locking member 34 is used to fix the position of the aluminum profile raw material.

[0054] In some embodiments, as Figure 4 As shown, the sliding member 33 includes a slider 331, a limit pin 332 and a support plate 333. The slider 331 and the connecting rod 32 are sleeved together. The slider 331 is connected to the connecting rod 32 through the limit pin 332. The support plate 333 is fixedly connected to the slider 331. The support plate 333 is used to support the locking member 34.

[0055] Furthermore, a through hole is machined in the slider 331, a thread is machined on the outer wall of the limiting pin 332, and a threaded hole is machined in the support plate 333. The support plate 333 is used to fix the use position of the locking member 34;

[0056] Therefore, by moving the slider 331 up and down or rotating the outer wall of the connecting rod 32, the limit pin 332 in the rotating slider 331 is connected to the connecting rod 32, and then the position of the slider 331 on the connecting rod 32 is determined, thereby completing the position adjustment of the locking member 34.

[0057] In some embodiments, as Figure 4 As shown, the locking member 34 includes a threaded rod 341, a hand wheel 342 and a rubber head 343. The threaded rod 341 and the support plate 333 are threadedly connected. One end of the threaded rod 341 is fixedly connected to the hand wheel 342, and the other end of the threaded rod 341 is fixedly connected to the rubber head 343.

[0058] Furthermore, the threaded rod 341 is installed inside the support plate 333, and the handwheel 342 is set to adjust the position of the threaded rod 341 in the support plate 333. The rubber head 343 has plasticity to prevent the threaded rod 341 from clamping the aluminum profile material too much, causing indentations on the aluminum profile material.

[0059] In some embodiments, as Figure 1 and Figure 3 As shown, a driving assembly 4 is installed on the rotating shaft 21, and the driving assembly 4 is used to provide power for the rotation of the rotating shaft 21. The driving assembly 4 includes a gear 41, a rack 42, a telescopic member 43 and a connecting member 44. The gear 41 is fixedly connected to the rotating shaft 21, the rack 42 is meshed and connected to the gear 41, the telescopic member 43 is fixedly connected to the rack 42, and the telescopic member 43 is connected to the collection box 1 through the connecting member 44.

[0060] Furthermore, the gear 41 is fixedly connected to the end of the rotating shaft 21 away from the carrying tray 24, the rack 42 is processed into a right angle shape, the telescopic part 43 can be a hydraulic cylinder, an electric push rod, etc., and the connecting part 44 is used to fix the use position of the telescopic part 43. The use of the telescopic part 43 facilitates the provision of power for the rotation of the rotating shaft 21 in the collection box 1.

[0061] In some embodiments, as Figure 3 As shown, the connecting member 44 includes a clamp 441 and a bolt 442 . The clamp 441 is fixedly connected to the telescopic member 43 , and the clamp 441 is connected to the collection box 1 via the bolt 442 .

[0062] Furthermore, the clamp 441 is fixed to the outer wall of the telescopic member 43 , and the bolt 442 connects the clamp 441 and the collection box 1 , thereby determining the installation position of the telescopic member 43 .

[0063] In some embodiments, as Figure 5 As shown, it also includes a bearing pad 5, which is fixedly connected to the collection box 1, and a mounting slot 51 is opened in the bearing pad 5.

[0064] Furthermore, the entire mechanism is installed in the machine tool through the support plate 5 , and two installation slots 51 are processed on the support plate 5 to facilitate the connection between the support plate 5 and the processing position on the machine tool.

[0065] In some embodiments, as Figure 5 As shown, an opening and closing assembly 6 is installed on the supporting pad 5, and the opening and closing assembly 6 is used to close the bottom of the collection box 1. The opening and closing assembly 6 includes a cross bar 61, a sealing plate 62 and a fixing member 63. The cross bar 61 is fixedly connected to the supporting pad 5, and the sealing plate 62 is rotatably connected to the cross bar 61. The sealing plate 62 determines the use position of the sealing plate 62 in the supporting pad 5 through the fixing member 63.

[0066] Furthermore, the sealing plate 62 can rotate on the outer wall of the cross bar 61, and the fixing member 63 is provided to fix the position of the sealing plate 62. By rotating the sealing plate 62, the bottom of the collection box 1 can be opened and closed, thereby facilitating the discharge of waste in the collection box 1.

[0067] In some embodiments, as Figure 6As shown, the fixing member 63 includes a support rod 631, a clamping sleeve 632 and a cylindrical pin 633. The support rod 631 is fixedly connected to the bearing pad 5, the clamping sleeve 632 is sleeved on the support rod 631, and the cylindrical pin 633 and the clamping sleeve 632 are fixedly connected.

[0068] Furthermore, the support plate 631 is horizontally arranged in the bearing pad 5, and a protruding horizontal plate is processed in the clamping sleeve 632. Two cylindrical pins 633 are fixedly connected in the clamping sleeve 632. When the sealing plate 62 closes the bottom of the collection box 1, the clamping sleeve 632 is moved horizontally on the outer wall of the cross bar 61 to drive the cylindrical pins 633 to be inserted into the groove of the bearing pad 5. At this time, the protruding position of the clamping sleeve 632 clamps the sealing plate 62 to fix the position of the sealing plate 62.

[0069] In some embodiments, as Figure 1 and Figure 5 As shown, an adjustment component 7 is provided in the bearing pad 5, and the adjustment component 7 is used to control the use height of the bearing pad 5. The adjustment component 7 includes a push rod 71 and an anti-slip pad 72. The push rod 71 and the bearing pad 5 are threadedly connected, and the anti-slip pad 72 is fixedly connected to the push rod 71. The anti-slip pad 71 and the bearing pad 5 are sleeved and connected.

[0070] Furthermore, the outer wall of the push rod 71 is processed with threads, and the push rod 71 is distributed at the four corners of the bearing pad 5. The anti-slip pad 72 is processed with stripes, and the anti-slip pad 72 can be set in the cavity of the bearing pad 5;

[0071] Therefore, the position of the anti-slip pad 72 is adjusted by rotating the top rod 71 in the bearing pad 5, and the use height of the entire mechanism is raised by changing the position of the top rod 71 in the bearing pad 5. When the bearing pad 5 is raised, it is convenient to open the sealing plate 62 to discharge the waste in the collection box 1.

[0072] Working principle:

[0073] First, the battery tray to be processed is installed on the surface of the carrying tray 24, and the connecting rod 32 and the threaded sleeve 31 are connected. Then, the use position of the slider 331 is adjusted on the outer wall of the connecting rod 32, and the slider 331 and the connecting rod 32 are connected using the limit pin 332. Then, the threaded rod 341 is rotated in the support plate 333, and the threaded rod 341 moves to drive the rubber head 343 to tighten the battery tray. The use of multiple fixing components 3 enhances the connection strength between the battery tray and the carrying tray 24. At this time, the positioning pin 23 is used to fix the position of the ear plate 22, and the battery tray can be processed. The waste chips generated during the processing fall into the collection box 1. When some waste chips are retained in the battery tray, the positioning pin 23 and the collection box 1 are rotated. Box 1 is separated, and the telescopic part 43 is started. The telescopic part 43 drives the gear 41 to rotate through the rack 42, and then the gear 41 drives the carrying tray 24 to rotate through the rotating shaft 21. The battery tray on the carrying tray 24 flips clockwise, and then the waste chips remaining in the battery tray fall into the collection box 1. After the carrying tray 24 is reset, the battery tray continues to be processed. When the waste chips in the collection box 1 needs to be cleaned, the clamping sleeve 632 is moved horizontally on the outer wall of the support rod 631, and the clamping sleeve 632 drives the cylindrical pin 633 and the carrying pad 5 to separate. Then the clamping sleeve 632 rotates on the outer wall of the support rod 631 and separates from the sealing plate 62, and then the sealing plate 62 rotates in the cross bar 61 and separates from the collection box 1, and the waste chips in the collection box 1 are discharged.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A car battery tray aluminum profile processing tool, characterized in that: include: A collection box (1), wherein the collection box (1) collects waste scraps generated during the processing of the battery tray; A turning assembly (2), the turning assembly (2) being rotatably connected to the collection box (1), and the turning assembly (2) drives the processed battery tray to turn clockwise in the collection box (1); The turning assembly (2) comprises a rotating shaft (21), an ear plate (22), a positioning pin (23) and a carrying tray (24); The rotating shaft (21) and the collecting box (1) are rotatably connected, the ear plate (22) is fixedly connected to the rotating shaft (21), the ear plate (22) is connected to the collecting box (1) via the positioning pin (23), and the carrying tray (24) is fixedly connected to the rotating shaft (21).

2. The automotive battery tray aluminum profile processing tool according to claim 1 is characterized in that: A fixing assembly (3) is installed on the carrying tray (24); The fixing assembly (3) fixes the processed battery tray on the carrying tray (24); The fixing assembly (3) comprises a threaded sleeve (31), a connecting rod (32), a sliding member (33) and a locking member (34); The threaded sleeve (31) is fixedly connected to the carrying tray (24), the connecting rod (32) and the threaded sleeve (31) are threadedly connected, the sliding member (33) is sleeved on the connecting rod (32), the sliding member (33) is used to adjust the position of the locking member (34), the locking member (34) is threadedly connected to the sliding member (33), and the locking member (34) is used to fix the position of the processed battery tray.

3. The automotive battery tray aluminum profile processing tool according to claim 2, characterized in that: The sliding member (33) includes a slider (331), a limiting pin (332) and a support plate (333); The slider (331) and the connecting rod (32) are sleeve-connected, the slider (331) is connected to the connecting rod (32) via the limit pin (332), the support plate (333) is fixedly connected to the slider (331), and the support plate (333) is used to carry the locking member (34).

4. The automotive battery tray aluminum profile processing tool according to claim 3, characterized in that: The locking member (34) includes a threaded rod (341), a hand wheel (342) and a rubber head (343); The threaded rod (341) and the support plate (333) are threadedly connected, one end of the threaded rod (341) is fixedly connected to the hand wheel (342), and the other end of the threaded rod (341) is fixedly connected to the rubber head (343).

5. The automotive battery tray aluminum profile processing tool according to claim 1, characterized in that: A driving assembly (4) is mounted on the rotating shaft (21); The driving assembly (4) is used to provide power for the rotation of the rotating shaft (21); The driving assembly (4) includes a gear (41), a rack (42), a telescopic member (43) and a connecting member (44); The gear (41) is fixedly connected to the rotating shaft (21), the rack (42) is meshedly connected to the gear (41), the telescopic member (43) is fixedly connected to the rack (42), and the telescopic member (43) is connected to the collection box (1) via the connecting member (44).

6. The automotive battery tray aluminum profile processing tool according to claim 5, characterized in that: The connecting member (44) includes a clamp (441) and a bolt (442); The clamp (441) and the telescopic member (43) are fixedly connected, and the clamp (441) is connected to the collection box (1) via the bolt (442).

7. The automotive battery tray aluminum profile processing tool according to claim 1, characterized in that: Also includes a bearing pad (5); The bearing pad (5) and the collection box (1) are fixedly connected, and a mounting slot (51) is provided in the bearing pad (5).

8. The automotive battery tray aluminum profile processing tool according to claim 7, characterized in that: An opening and closing assembly (6) is installed on the bearing pad (5); The opening and closing assembly (6) is used to close the bottom of the collection box (1); The opening and closing assembly (6) comprises a crossbar (61), a sealing plate (62) and a fixing member (63); The cross bar (61) is fixedly connected to the bearing pad (5), the sealing plate (62) and the cross bar (61) are rotatably connected, and the sealing plate (62) determines the use position in the bearing pad (5) through the fixing member (63).

9. The automotive battery tray aluminum profile processing tool according to claim 8, characterized in that: The fixing member (63) includes a support rod (631), a clamping sleeve (632) and a cylindrical pin (633); The support rod (631) is fixedly connected to the bearing pad (5), the clamping sleeve (632) is sleeved on the support rod (631), and the cylindrical pin (633) and the clamping sleeve (632) are fixedly connected.

10. The automotive battery tray aluminum profile processing tool according to claim 7, characterized in that: An adjustment component (7) is provided in the bearing pad (5); The adjustment component (7) is used to control the use height of the bearing pad (5); The adjustment assembly (7) includes a push rod (71) and an anti-slip pad (72); The push rod (71) and the bearing pad (5) are threadedly connected, the anti-skid pad (72) is fixedly connected to the push rod (71), and the anti-skid pad (72) and the bearing pad (5) are sleeve-connected.

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