Pulley fixing piece used in cooperation with trailer shackle

Abstract

The utility model provides a pulley fixing piece used in cooperation with a trailer shackle. The pulley fixing piece used in cooperation with the trailer shackle comprises a bolt and a pulley, a pulley body is installed on the outer surface of the bolt, a first split shackle and a second split shackle are rotationally connected to the positions, located on the two sides of the pulley body, of the outer surface of the bolt correspondingly, nuts are in threaded connection with the two ends of the bolt correspondingly, and the two nuts are used for fixing the first split shackle and the second split shackle correspondingly. According to the pulley fixing piece used in cooperation with the trailer shackle, a closed structure and a semi-open structure can be formed through buckling between the first split shackle and the second split shackle, a rope can be conveniently fixed in a penetrating mode, the pulley body is matched with the split shackles, common shackles or other similar shackles in a compatible mode, and the pulley fixing piece can be used for fixing the rope conveniently. Higher traction efficiency and a safer operation environment are provided, equipment damage caused by stress concentration is reduced through the multi-angle adjusting function of the pulley body, and the stability of the traction process is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of traction and rescue equipment, especially to a pulley fixture used in combination with trailer shackles. BACKGROUND

[0002] The shackle is a connector commonly used in mechanical engineering, and common shackle in engineering includes a large European bow-shaped shackle, a large European DEE shackle, a round head shackle, a square head shackle, a D-shaped shackle and the like.

[0003] In the existing trailer and rescue operation, due to the limited traction angle, stress concentration often occurs, thereby increasing the risk of equipment damage and reducing the traction stability. Although the traditional pulley and shackle each play a role, their cooperation efficiency is low in complex operation, and the installation and adjustment process is cumbersome.

[0004] Therefore, it is necessary to provide a pulley fixture used in combination with trailer shackles to solve the above technical problems. SUMMARY

[0005] The utility model provides a pulley fixture used in combination with trailer shackles, which solves the problem of low cooperation efficiency of the pulley and shackle in complex operation and the cumbersome installation and adjustment process.

[0006] To solve the above technical problems, the pulley fixture used in combination with trailer shackles provided by the utility model comprises a bolt;

[0007] The outer surface of the bolt is provided with a pulley body, the outer surface of the bolt and the two sides of the pulley body are respectively rotatably connected with a first split shackle and a second split shackle, the two ends of the bolt are threadedly connected with nuts, the two nuts are respectively used for fixing the first split shackle and the second split shackle, and the first split shackle and the second split shackle can form a closed loop.

[0008] Preferably, the first split shackle and the second split shackle are provided with a clamping positioning table and a positioning groove, the clamping positioning table on the first split shackle is aligned with the positioning groove on the second split shackle, and the clamping positioning table on the second split shackle is aligned with the positioning groove on the first split shackle.

[0009] Preferably, the first split shackle and the second split shackle are provided with a magnetic piece.

[0010] Preferably, the first split shackle is provided with a positioning pin, the second split shackle is provided with a limiting structure, the limiting structure comprises a shell, a sliding block is slidably connected in the shell, a compression spring is arranged between the sliding block and the inner wall of the shell, and a positioning sleeve is fixedly connected to the sliding block.

[0011] Preferably, the positioning sleeve is matched with the positioning pin, and the positioning sleeve is sleeved on the positioning pin to fix the first split shackle and the second split shackle.

[0012] Preferably, a pull rod is fixedly connected to the sliding block, and the pull rod penetrates through the shell and extends to the outside of the shell.

[0013] Compared with the related art, the pulley fixture used in combination with the trailer shackle has the following beneficial effects:

[0014] The pulley fixture used in combination with the trailer shackle comprises a pulley body, a first split shackle, a second split shackle, a nut, a bite positioning table, a positioning groove, a magnetic attraction piece and a limiting structure. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The pulley fixture used in combination with the trailer shackle comprises a pulley body, a first split shackle, a second split shackle, a nut, a bite positioning table, a positioning groove, a magnetic attraction piece and a limiting structure.

[0016] Figure 2 The pulley fixture used in combination with the trailer shackle comprises a pulley body, a first split shackle, a second split shackle, a nut, a bite positioning table, a positioning groove, a magnetic attraction piece and a limiting structure. Figure 1 The pulley fixture used in combination with the trailer shackle comprises a pulley body, a first split shackle, a second split shackle, a nut, a bite positioning table, a positioning groove, a magnetic attraction piece and a limiting structure.

[0017] Figure 3 The pulley fixture used in combination with the trailer shackle comprises a pulley body, a first split shackle, a second split shackle, a nut, a bite positioning table, a positioning groove, a magnetic attraction piece and a limiting structure. Figure 2 The pulley fixture used in combination with the trailer shackle comprises a pulley body, a first split shackle, a second split shackle, a nut, a bite positioning table, a positioning groove, a magnetic attraction piece and a limiting structure.

[0018] Figure 4 The pulley fixture used in combination with the trailer shackle comprises a pulley body, a first split shackle, a second split shackle, a nut, a bite positioning table, a positioning groove, a magnetic attraction piece and a limiting structure.

[0019] Figure 5 The pulley fixture used in combination with the trailer shackle comprises a pulley body, a first split shackle, a second split shackle, a nut, a bite positioning table, a positioning groove, a magnetic attraction piece and a limiting structure. Figure 4 The pulley fixture used in combination with the trailer shackle comprises a pulley body, a first split shackle, a second split shackle, a nut, a bite positioning table, a positioning groove, a magnetic attraction piece and a limiting structure.

[0020] In the drawing: 1, bolt; 2, pulley body; 3, first split shackle; 4, second split shackle; 5, nut; 6, bite positioning table; 7, positioning groove; 8, magnetic attraction piece; 9, limiting structure; 91, shell; 92, sliding block; 93, compression spring; 94, positioning sleeve; 95, pull rod; and 10, positioning pin. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with the drawings and embodiments.

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 Among them, Figure 1 It is the structure schematic diagram of some examples of the pulley fixture used with trailer shackle provided by the utility model; Figure 2 It is Figure 1 The schematic diagram of the opening of the first split shackle and the second split shackle shown in figure 1; Figure 3 It is Figure 2 The bottom view of the first split shackle shown in figure 1.In some embodiments of the present disclosure, the pulley fixture used with trailer shackle includes: bolt 1;

[0023] The outer surface of the bolt 1 is provided with pulley body 2, the outer surface of the bolt 1 and the two sides of pulley body 2 are respectively rotatably connected with first split shackle 3 and second split shackle 4, the two ends of the bolt 1 are respectively threadedly connected with nut 5, and the two nuts 5 are respectively used for the fixation of first split shackle 3 and second split shackle 4, and the first split shackle 3 and the second split shackle 4 can constitute a closed loop.

[0024] Pulley body 2 is made of high-strength material, has excellent wear resistance and high load bearing capacity, and can withstand a traction force of up to dozens of tons. The structural design of pulley body 2 has the function of multi-angle free rotation, so that it can flexibly adjust the traction angle according to the needs in rescue and traction operation, and avoid the problem of stress concentration caused by single direction traction.

[0025] The pulley body 2 system is specially designed to be used with different types of shackles, so that users can not only choose split shackles, but also use ordinary shackles or other connection devices with similar functions, so that the system has wide applicability in different scenes. The design of pulley body 2 simplifies the connection process with the shackle, supports quick installation and disassembly, and greatly improves the efficiency of rescue and traction operation.

[0026] The first split shackle 3 and the second split shackle 4 are provided with engagement positioning table 6 and positioning groove 7, the engagement positioning table 6 on the first split shackle 3 is aligned with the positioning groove 7 on the second split shackle 4, and the engagement positioning table 6 on the second split shackle 4 is aligned with the positioning groove 7 on the first split shackle 3.

[0027] The first split shackle 3 and the second split shackle 4 are provided with magnetic attraction piece 8.

[0028] Through the setting of magnetic attraction piece 8, the first split shackle 3 and the second split shackle 4 can be attracted together when buckling, so as to improve the stability of use.

[0029] The working principle of the pulley fastener used with the trailer shackle provided by the utility model is as follows:

[0030] After the first split shackle 3 is flipped upward, the first split shackle 3 and the second split shackle are separated, and the closed loop between the two is opened. Then, the rope can be passed through the opening of the second split shackle 4 so that the rope is located in the middle area between the first split shackle 3 and the second split shackle 4. Then, the first split shackle 3 is buckled onto the second split shackle 4, so that a closed loop is formed between the first split shackle 3 and the second split shackle 4, thereby fixing the rope.

[0031] Compared with the related art, the pulley fastener provided by the present invention for use with a trailer shackle has the following beneficial effects:

[0032] The utility model can form a closed structure and a semi-open structure through the buckling between the first split shackle 3 and the second split shackle 4, which is convenient for threading and fixing the rope. The pulley body 2 provides higher traction efficiency and a safer operating environment through compatibility with the split shackle, ordinary shackle or other similar shackles. The multi-angle adjustment function of the pulley body 2 reduces equipment damage caused by stress concentration and enhances the smoothness of the traction process. The system is simple in design and has high adaptability and flexibility. Since it is compatible with various types of shackles, it is particularly suitable for use in complex rescue and traction tasks, can effectively disperse pulling force, improve operating efficiency, and ensure safety during operation.

[0033] In some embodiments of the present disclosure, please refer to Figures 4-5 A positioning pin 10 is installed on the first split shackle 3, and a limiting structure 9 is installed on the second split shackle 4. The limiting structure 9 includes a shell 91, and a sliding block 92 is slidably connected to the inside of the shell 91. A compression spring 93 is provided between the sliding block 92 and the inner wall of the shell 91, and a positioning sleeve 94 is fixedly connected to the sliding block 92.

[0034] The positioning sleeve 94 is adapted to the positioning pin 10 , and the positioning sleeve 94 is sleeved on the positioning pin 10 to fix the first split shackle 3 and the second split shackle 4 .

[0035] A pull rod 95 is fixedly connected to the sliding block 92 . The pull rod 95 passes through the housing 91 and extends to the outside of the housing 91 .

[0036] Compared with the related art, the pulley fastener provided by the present invention for use with a trailer shackle has the following beneficial effects:

[0037] When the first split buckle 3 and the second split buckle 4 are buckled, the pull rod 95 can be manually pulled to move the sliding block 92 to compress the compression spring 93, at this time the positioning sleeve 94 moves outward, when the first split buckle 3 and the second split buckle 4 are combined, the pull rod 95 is released, at this time the compression spring 93 rebounds to reset, so that the sliding block 92 slides to reset, and then the positioning sleeve 94 moves inward to be sleeved on the positioning pin 10, so that the first split buckle 3 and the second split buckle 4 are fixed and cannot be opened at will, thereby improving the stability of use and avoiding the situation that the hook is opened during use.

[0038] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A pulley fixture used with a trailer shackle, characterized in that: include: bolt; A pulley body is installed on the outer surface of the bolt, and a first split shackle and a second split shackle are rotatably connected to the outer surface of the bolt and located on both sides of the pulley body. Both ends of the bolt are threadedly connected with nuts, and the two nuts are respectively used to fix the first split shackle and the second split shackle, so that a closed loop can be formed between the first split shackle and the second split shackle.

2. The pulley fixture used with a trailer shackle according to claim 1, characterized in that: The first split shackle and the second split shackle are both provided with an engaging positioning platform and a positioning groove. The engaging positioning platform on the first split shackle is aligned with the positioning groove on the second split shackle, and the engaging positioning platform on the second split shackle is aligned with the positioning groove on the first split shackle.

3. The pulley fixture used with a trailer shackle according to claim 1, characterized in that: The first split shackle and the second split shackle are both provided with magnetic sheets.

4. The pulley fixture used with a trailer shackle according to claim 1, characterized in that: A positioning pin is installed on the first split shackle, and a limiting structure is installed on the second split shackle. The limiting structure includes a shell, a sliding block is slidably connected to the interior of the shell, a compression spring is provided between the sliding block and the inner wall of the shell, and a positioning sleeve is fixedly connected to the sliding block.

5. The pulley fixture used with a trailer shackle according to claim 4, characterized in that: The positioning sleeve is adapted to the positioning pin, and the positioning sleeve is sleeved on the positioning pin to fix the first split shackle and the second split shackle.

6. The pulley fixture used with a trailer shackle according to claim 4, characterized in that: A pull rod is fixedly connected to the sliding block, and the pull rod passes through the shell and extends to the outside of the shell.

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