A rigging support for storing large hoisting rigging
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2026-08-11
AI Technical Summary
[0003]本实用新型的目的在于提供一种用于存放大型吊装索具的索具支架,通过连接架,解决了现有设备在使用时将索具固定在支架上后,不便于对索具进行固定,可能或导致索具受到外力作用从支架上脱离开来伤害到使用者,同时在对不同长度的索具进行放置时,时常需要更换装置后才可进行后续操作,较为麻烦,且不便于对支架进行缓冲保护,支架可能会由于外力作用倾倒导致索具损毁的问题
1、本实用新型通过设置了挂钩,在设备需要使用时,将索具挂在挂钩上,随后将齿形卡条向下掰动,使其卡住齿形卡块,由于齿形卡条上自带的卡槽与齿形卡块的卡槽呈现出相同方向的轨迹,因此在齿形卡条插进固定块的过程中齿形卡条运动可以正常挤压齿形卡块使齿形卡块向下运动抵住弹片,使弹片形变,达到了便于使用者对不同型号的索具进行放置,在放置过程中可以对索具的位置进行固定,防止索具在受到外力作用时,自行脱落导致索具损坏。
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Figure CN224618389U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of rigging support technology, and in particular relates to a rigging support for storing large hoisting rigging. Background Technology
[0002] Currently, the construction and assembly of offshore platform modules and jacket structures are generally carried out on land, with large cranes used for assembly. Because large cranes require a large number of heavy lifting slings, these slings face issues such as frequent access and short-term storage. Therefore, the proper storage and placement of crane slings is a crucial aspect of sling management. A reasonable and effective storage method not only ensures convenient access to heavy lifting slings but also provides essential protection for them. When using existing equipment, it is inconvenient to secure the rigging after it is fixed to the support. This may cause the rigging to detach from the support due to external force and injure the user. At the same time, when placing rigging of different lengths, it is often necessary to change the device before subsequent operations can be carried out, which is quite troublesome and not convenient for buffer protection. The support may tip over due to external force, causing damage to the rigging. Therefore, we propose a rigging support for storing large lifting rigging. Utility Model Content
[0003] The purpose of this utility model is to provide a rigging support for storing large hoisting rigging. By using a connecting frame, it solves the problems of existing equipment where fixing rigging to the support is inconvenient, which may cause the rigging to detach from the support due to external forces and injure the user. In addition, when placing rigging of different lengths, it is often necessary to change the device before subsequent operations can be carried out, which is quite troublesome. Furthermore, it is not convenient to provide cushioning protection for the support, and the support may tip over due to external forces, causing damage to the rigging.
[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a rigging support for storing large hoisting rigging, including a connecting frame, a slide rail fixedly connected to the top outer wall of the connecting frame, a plurality of connecting frames slidably connected to the inner wall of the slide rail, and a protective mechanism provided on the outer wall of the connecting frame. The protective mechanism includes several hooks. The outer walls of the connecting frame and the second connecting frame are fixedly connected to the outer walls of the hooks. A fixing seat is fixedly connected to the top outer wall of each hook. A toothed retaining strip is rotatably connected to the outer wall of the fixing seat. A fixing block is fixedly connected to the bottom outer wall of each hook. A rotating shaft is fixedly connected to the inner wall of the fixing block. A toothed retaining block is rotatably connected to the outer wall of the rotating shaft. The outer wall of the toothed retaining block engages with the outer wall of the toothed retaining strip. A slider is slidably connected to the inner wall of the end of the fixing block away from the toothed retaining strip. The inner wall of the slider is provided with several arc-shaped limiting grooves. The outer wall of the arc-shaped limiting groove is slidably connected to a spring piece. The outer wall of the spring piece is slidably connected to the outer wall of the toothed block. The outer wall of the arc-shaped limiting groove is rotatably connected to a threaded rod. The outer wall of the threaded rod is rotatably connected to the inner wall of the fixed block. The inner wall of the fixed block near the toothed block is rotatably connected to a second rotating shaft. The outer wall of the second rotating shaft is fixedly connected to a lever. The outer wall of the lever is slidably connected to the outer wall of the toothed block. The outer wall of the connecting frame is provided with an adjustment mechanism.
[0005] Furthermore, the adjustment mechanism includes a motor frame, the outer wall of which is fixedly connected to the outer wall of the slide rail, a motor is fixedly connected to the outer wall of the motor frame, and a transmission shaft is fixedly connected to the bottom output end of the motor via a coupling.
[0006] Furthermore, a gear is fixedly connected to the outer wall of the end of the drive shaft away from the motor, and a bidirectional threaded rod is rotatably connected to the inner wall of the slide rail. The outer wall of the bidirectional threaded rod is rotatably connected to the inner walls of several connecting frames.
[0007] Furthermore, a second gear is fixedly connected to the outer wall of the bidirectional threaded rod near the gear, and the outer wall of the second gear meshes with the outer wall of the gear. Several sliding grooves are provided on the inner walls of both the connecting frame and the second connecting frame, and a second slider is slidably connected to the inner wall of the sliding groove.
[0008] Furthermore, both the inner walls of the connecting frame and the second connecting frame are fixedly connected to a limiting shaft, and both the second slider and the outer wall of the limiting shaft are rotatably connected to a pull rod.
[0009] Furthermore, the inner wall of the pull rod is rotatably connected to a second limiting shaft, and the bottom outer wall of both the connecting frame and the connecting frame two are fixedly connected to a base.
[0010] Furthermore, several sliding rod sleeves are fixedly connected to the outer wall of the connecting frame and the connecting frame two near the base. The inner wall of the sliding rod sleeve is slidably connected to a sliding rod, and the outer wall of the sliding rod is fixedly connected to the inner wall of the base.
[0011] Furthermore, a spring is fixedly connected to the outer wall of the slide rod, and the outer wall of the spring is fixedly connected to the outer wall of the slide rod sleeve. An anti-slip pad is fixedly connected to the bottom outer wall of the base.
[0012] This utility model has the following beneficial effects: 1. This utility model incorporates a hook. When the equipment is needed, the rigging is hung on the hook, and then the toothed clip is bent downwards to engage the toothed block. Since the groove on the toothed clip and the groove on the toothed block follow the same trajectory, the movement of the toothed clip during insertion into the fixing block can properly compress the toothed block, causing it to move downwards and press against the spring, thus deforming the spring. This allows users to easily place different types of rigging and fix its position during placement, preventing it from falling off and being damaged when subjected to external forces.
[0013] 2. This utility model incorporates a drive shaft. When the rigging is long, starting the motor causes it to rotate, which in turn rotates the drive shaft, causing the gear to rotate. Since the gear meshes with the second gear, the rotation of the second gear drives the rotation of the double-threaded rod, which in turn rotates the double-threaded rod. This rotation of the double-threaded rod drives several connecting frames to move simultaneously and in opposite directions. During this movement, the connecting frames compress the slider, causing it to slide up and down within the groove. This allows the user to freely adjust the position of the device according to actual usage, facilitating the fixing of rigging of different widths. Furthermore, the device exhibits strong stability, providing cushioning protection against external forces and preventing tipping and damage to the rigging.
[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the protective mechanism of this utility model; Figure 3 This is a cross-sectional view of the adjustment mechanism of this utility model; Figure 4 This utility model Figure 3 Enlarged view of point A in the middle; Figure 5 This is a cross-sectional view of the overall structure of this utility model; Figure 6This is a cross-sectional view of the slide rod sleeve of this utility model.
[0017] The attached diagram lists the components represented by each number as follows: 1. Connecting frame; 101. Slide rail; 102. Connecting frame two; 2. Protective mechanism; 201. Hook; 202. Fixing seat; 203. Toothed clip; 204. Fixing block; 205. Rotating shaft; 206. Toothed clip; 207. Slider; 208. Arc-shaped limiting groove; 209. Spring; 210. Threaded rod; 211. Rotating shaft two; 212. Pulley; 3. Adjusting mechanism; 301. Motor frame; 302. Motor; 303. Drive shaft; 304. Gear; 305. Bidirectional threaded rod; 306. Gear two; 307. Slide groove; 308. Slider two; 309. Limiting shaft; 310. Pull rod; 311. Limiting shaft two; 312. Slide rod sleeve; 313. Slide rod; 314. Spring; 315. Anti-slip pad; 316. Base. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0019] Please see Figure 1-6 As shown, this utility model is a rigging support for storing large hoisting rigging, including a connecting frame 1. A slide rail 101 is fixedly connected to the top outer wall of the connecting frame 1. A plurality of connecting frames 2 102 are slidably connected to the inner wall of the slide rail 101. A protective mechanism 2 is provided on the outer wall of the connecting frame 1. The inner wall of the slide rail 101 is slidably connected to the outer wall of the connecting frames 2 102. The slide rail 101 can limit the movement trajectory of the connecting frames 2 102, so that the connecting frames 2 102 can only slide within the slide rail 101. The protective mechanism 2 includes several hooks 201. The outer walls of connecting frame 1 and connecting frame 2 102 are fixedly connected to the outer walls of the hooks 201. A fixing seat 202 is fixedly connected to the top outer wall of each hook 201. A toothed retaining strip 203 is rotatably connected to the outer wall of the fixing seat 202. A fixing block 204 is fixedly connected to the bottom outer wall of each hook 201. Inserting the toothed retaining strip 203 into the fixing block 204 can fix the rigging and prevent it from falling off. The outer wall of the fixing block 204 is fixedly connected to the outer wall of the hook 201. This prevents the internal parts of the hook 201 from jamming due to external objects. A rotating shaft 205 is fixedly connected to the inner wall of the fixing block 204, and a toothed locking block 206 is rotatably connected to the outer wall of the rotating shaft 205. The outer wall of the toothed locking block 206 engages with the outer wall of the toothed locking strip 203. A slider 207 is slidably connected to the inner wall of the end of the fixing block 204 away from the toothed locking strip 203. The outer wall of the slider 207 is slidably connected to the inner wall of the fixing block 204. The fixing block 204 can limit the position of the slider 207, preventing it from sliding. The slider 207 has several arc-shaped limiting grooves 208 on its inner wall. A spring piece 209 is slidably connected to the outer wall of each arc-shaped limiting groove 208. The outer wall of the spring piece 209 is slidably connected to the outer wall of the toothed block 206. A threaded rod 210 is rotatably connected to the outer wall of the arc-shaped limiting grooves 208. Rotating the threaded rod 210 causes the slider 207 to slide within the fixed block 204. The sliding of the slider 207 causes the spring piece 209 to slide together. The outer wall of the threaded rod 210 is rotatably connected to the inner wall of the fixed block 204. A rotating shaft 211 is rotatably connected to the inner wall of the fixed block 204 near the toothed block 206. A lever 212 is fixedly connected to the outer wall of the rotating shaft 211. The outer wall of the lever 212 is slidably connected to the outer wall of the toothed block 206. An adjustment mechanism 3 is provided on the outer wall of the connecting frame 1. Rotating the rotating shaft 211 can drive the lever 212 to rotate. The rotation of the lever 212 can push the toothed block 206 to move downward, thereby canceling the locked state between the toothed block 206 and the toothed strip 203.
[0020] Rotating the threaded rod 210 causes the slider 207 to slide within the fixed block 204, preventing the protrusion of the slider 207 from pressing against the protrusion of the toothed block 206. Since the arc-shaped limiting groove 208 is arc-shaped and the spring piece 209 is tightly attached between the arc-shaped limiting groove 208 and the toothed block 206, the sliding of the slider 207 will cause the spring piece 209 to slide together. Then, rotating the second rotating shaft 211 causes the lever 212 to rotate and move the toothed block 206 so that the toothed block 206 no longer clamps the toothed strip 203, thereby removing the toothed strip 203 and canceling the fixation of the rigging.
[0021] The adjusting mechanism 3 includes a motor frame 301, the outer wall of which is fixedly connected to the outer wall of the slide rail 101. A motor 302 is fixedly connected to the outer wall of the motor frame 301. The bottom output end of the motor 302 is fixedly connected to a transmission shaft 303 via a coupling. When the motor 302 is started, its rotation drives the transmission shaft 303 to rotate. The motor frame 301 can fix the position of the motor 302 to prevent the motor 302 from shifting due to its own violent vibration during operation. A gear 304 is fixedly connected to the outer wall of the end of the transmission shaft 303 away from the motor 302. A double-threaded rod 305 is rotatably connected to the inner wall of the slide rail 101. The outer wall of the double-threaded rod 305 is connected to a gear 304. The inner wall of the connecting frame 102 is rotatably connected. The rotation of the drive shaft 303 will drive the gear 304 to rotate. Since the gear 304 meshes with the gear 306, the rotation of the gear 304 can drive the gear 306 to rotate, causing the bidirectional threaded rod 305 to rotate. The outer wall of the bidirectional threaded rod 305 near the gear 304 is fixedly connected to the gear 306. The outer wall of the gear 306 meshes with the outer wall of the gear 304. The inner walls of both the connecting frame 1 and the connecting frame 102 are provided with several sliding grooves 307. The inner wall of the sliding groove 307 is slidably connected to the slider 308. The sliding groove 307 can limit the movement trajectory of the slider 308, so that the slider 308 can only move up and down within the sliding groove 307.
[0022] When the motor 302 is started, the rotation of the motor 302 will drive the transmission shaft 303 to rotate, causing the gear 304 to rotate. The rotation of the gear 304 will drive the gear 306 to rotate, causing the bidirectional threaded rod 305 to rotate. When the bidirectional threaded rod 305 rotates, it will drive multiple connecting frames 102 to slide within the connecting frames 102, thereby adjusting the position of the hook 201 to facilitate the installation and placement of rigging of different lengths.
[0023] Both connecting frame 1 and connecting frame 2 102 have a fixed limit shaft 309 on their inner walls. Both sliding block 2 308 and the outer wall of the limit shaft 309 have a pull rod 310 rotatably connected. The inner wall of the pull rod 310 is rotatably connected to a limit shaft 2 311. The outer wall of the limit shaft 2 311 is rotatably connected to the inner walls of several pull rods 310. The limit shaft 2 311 can fix the position of the pull rod 310, making the movement of the pull rod 310 smoother. Both connecting frame 1 and connecting frame 2 102 have a fixed base 316 on their bottom outer walls. Both connecting frame 1 and connecting frame 2 102 have several sliding rod sleeves 312 fixedly connected to their outer walls near the base 316. The inner wall of the sliding rod sleeve 312 is slidably connected to a sliding rod 313. The inner wall of the sliding rod sleeve 312 and the sliding rod... The outer wall of 313 is slidably connected, and the slide sleeve 312 can limit the movement trajectory of the slide rod 313, so that the slide rod 313 can only move within the slide sleeve 312. At the same time, the slide rod 313 can prevent the spring 314 from breaking during the extension and retraction process. The outer wall of the slide rod 313 is fixedly connected to the inner wall of the base 316. The outer wall of the slide rod 313 is fixedly connected to the spring 314, and the outer wall of the spring 314 is fixedly connected to the outer wall of the slide sleeve 312. The bottom outer wall of the base 316 is fixedly connected to the anti-slip pad 315. The spring 314 can buffer and protect the entire connecting frame 1 and connecting frame 2 102 due to its own elasticity. The anti-slip pad 315 can play an anti-slip role and prevent the entire connecting frame 1 from sliding when stationary, which would cause the support to tip over.
[0024] When the connecting frame 102 slides within the slide rail 101, the movement of the connecting frame 102 will drive the movement of multiple pull rods 310, causing the pull rods 310 to move. At this time, the movement of the pull rods 310 will change from horizontal movement to vertical movement along the slide groove 307. The limiting shaft 311 can fix the position of the pull rods 310. When the bracket as a whole is subjected to external force, the spring 314 will buffer and protect the slide sleeve 312 due to its own elasticity. In this way, the connecting frame 1 and the connecting frame 102 as a whole can be buffered and protected to prevent them from tipping over and causing damage to the rigging.
[0025] One specific application of this embodiment is: When the equipment is needed, the rigging is hung on hook 201, and then the toothed clip 203 is bent downwards to engage with the toothed block 206. Since the groove on the toothed clip 203 and the groove on the toothed block 206 follow the same trajectory, the movement of the toothed clip 203 during insertion into the fixing block 204 can normally compress the toothed block 206, causing it to move downwards and press against the spring 209, deforming the spring 209. At this time, the toothed clip 203 can continue to push deeper into the fixing block 204. After the rigging is installed, if the rigging shifts and causes the toothed clip 203 to move, the engagement of the toothed clip 203 and the toothed block 206 will allow the rigging to continue moving. The upward movement of the toothed clip 203 will cause the toothed block 206 to move upward. The fixing block 204 can abut against the toothed block 206 to prevent it from moving, thus fixing the toothed clip 203 in the fixing block 204 to prevent the rigging from falling off. When it is necessary to remove the rigging, first rotate the threaded rod 210. The rotation of the threaded rod 210 will drive the slider 207 to move closer to 10. Then rotate the second rotating shaft 211. The rotation of the second rotating shaft 211 will drive the lever 212 to rotate and move the toothed block 206, causing the toothed block 206 to move downward in a circular motion around the rotating shaft 205. At the same time, the protrusion of the slider 207 will not jam the protrusion of the toothed block 206, thus allowing the toothed clip to be pulled normally. Strip 203 pulls it out of the fixing block 204. When the rigging is long, start motor 302. The rotation of motor 302 will drive the transmission shaft 303 to rotate, causing gear 304 to rotate. Squid 04 meshes with gear 306. The rotation of gear 304 will drive gear 306 to rotate, causing the bidirectional threaded rod 305 to rotate. The rotation of bidirectional threaded rod 305 can drive several connecting frames 102 to move simultaneously and in opposite directions. During the movement of connecting frame 102, it will squeeze slider 308, causing it to slide up and down in the groove 307, causing the angle between several pull rods 310 to change. Pull rods 310 can make the movement of connecting frame 102 more stable, and at the same time make the overall connecting frame 1 more stable. Limiting shaft 31 1. The movement between the pull rods 310 can be limited. The limiting shaft 309 can fix one end of the pull rod 310 so that the movement of the pull rod 310 is more stable. This allows for adjustment of the overall position of the device, so that users can place rigging of different lengths. When the connecting frame 1 and the connecting frame 2 102 are subjected to an external impact, the movement of the connecting frame 1 and the connecting frame 2 102 will squeeze the sliding sleeve 312, causing the spring 314 to extend and retract. The transmission shaft 303 can limit the movement trajectory of the sliding sleeve 312 and prevent the spring 314 from breaking during the extension and retraction process. Due to its strong self-elasticity, the spring 314 can drive the sliding sleeve 312 to reset, thereby resetting the connecting frame 1 or the connecting frame 2 102, which plays a role in shock absorption and protection of the device.
[0026] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A rigging support for storing large hoisting rigging, comprising a connecting frame (1), characterized in that: The top outer wall of the connecting frame (1) is fixedly connected to a slide rail (101), and a number of connecting frames (102) are slidably connected to the inner wall of the slide rail (101). The outer wall of the connecting frame (1) is provided with a protective mechanism (2). The protective mechanism (2) includes several hooks (201). The outer walls of the connecting frame (1) and the second connecting frame (102) are fixedly connected to the outer walls of the several hooks (201). A fixed seat (202) is fixedly connected to the top outer wall of the hook (201). A toothed clip (203) is rotatably connected to the outer wall of the fixed seat (202). A fixed block (204) is fixedly connected to the bottom outer wall of the hook (201). A rotating shaft (205) is fixedly connected to the inner wall of the fixed block (204). A toothed clip (206) is rotatably connected to the outer wall of the rotating shaft (205). The outer wall of the toothed clip (206) meshes with the outer wall of the toothed clip (203). A slider (207) is slidably connected to the inner wall of the fixed block (204) away from the toothed clip (203). The inner wall of the slider (207) is provided with several arc-shaped limiting grooves (208). The outer wall of the arc-shaped limiting groove (208) is slidably connected with a spring piece (209). The outer wall of the spring piece (209) is slidably connected with the outer wall of the toothed block (206). The outer wall of the arc-shaped limiting groove (208) is rotatably connected with a threaded rod (210). The outer wall of the threaded rod (210) is rotatably connected with the inner wall of the fixed block (204). The inner wall of the fixed block (204) near the toothed block (206) is rotatably connected with a second rotating shaft (211). The outer wall of the second rotating shaft (211) is fixedly connected with a lever (212). The outer wall of the lever (212) is slidably connected with the outer wall of the toothed block (206). The outer wall of the connecting frame (1) is provided with an adjustment mechanism (3).
2. A rigging support for storing large hoisting rigging according to claim 1, characterized in that, The adjustment mechanism (3) includes a motor frame (301), the outer wall of the motor frame (301) is fixedly connected to the outer wall of the slide rail (101), a motor (302) is fixedly connected to the outer wall of the motor frame (301), and a transmission shaft (303) is fixedly connected to the bottom output end of the motor (302) through a coupling.
3. A rigging support for storing large hoisting rigging according to claim 2, characterized in that, A gear (304) is fixedly connected to the outer wall of the end of the drive shaft (303) away from the motor (302). A bidirectional threaded rod (305) is rotatably connected to the inner wall of the slide rail (101). The outer wall of the bidirectional threaded rod (305) is rotatably connected to the inner wall of several connecting frames (102).
4. A rigging support for storing large hoisting rigging according to claim 3, characterized in that, The outer wall of the bidirectional threaded rod (305) near the gear (304) is fixedly connected to a gear two (306). The outer wall of the gear two (306) meshes with the outer wall of the gear (304). The inner walls of the connecting frame (1) and the connecting frame two (102) are provided with a number of sliding grooves (307). The inner wall of the sliding groove (307) is slidably connected to a slider two (308).
5. A rigging support for storing large hoisting rigging according to claim 4, characterized in that, The inner walls of the connecting frame (1) and the connecting frame (2) are both fixedly connected to the limiting shaft (309), and the outer walls of the slider (2) and the limiting shaft (309) are both rotatably connected to the pull rod (310).
6. A rigging support for storing large hoisting rigging according to claim 5, characterized in that, The inner wall of the pull rod (310) is rotatably connected to the second limiting shaft (311), and the bottom outer walls of the connecting frame (1) and the second connecting frame (102) are both fixedly connected to the base (316).
7. A rigging support for storing large hoisting rigging according to claim 6, characterized in that, Several sliding sleeves (312) are fixedly connected to the outer wall of the end of the connecting frame (1) and the connecting frame two (102) near the base (316). A sliding rod (313) is slidably connected to the inner wall of the sliding sleeve (312). The outer wall of the sliding rod (313) is fixedly connected to the inner wall of the base (316).
8. A rigging support for storing large hoisting rigging according to claim 7, characterized in that, A spring (314) is fixedly connected to the outer wall of the slide rod (313), and the outer wall of the spring (314) is fixedly connected to the outer wall of the slide rod sleeve (312). An anti-slip pad (315) is fixedly connected to the bottom outer wall of the base (316).