Lifting lug load test tool

Abstract

The utility model belongs to the technical field of testing tools, and particularly relates to a lifting lug load testing tool which comprises a base, an adjusting mechanism is arranged on the base, a steel wire rope is arranged on the adjusting mechanism, a hook is fixedly connected to the end portion of the steel wire rope, a support is fixedly connected to the upper end of the base, and a lifting lug is arranged on the support. A fixing cylinder is fixedly connected to the interior of the support, and a protection mechanism is arranged on the support. According to the utility model, the pressure spring acts on the cover cap, so that the cover cap is elastically pressed on the fixed cylinder, the lifting lug is protected in the testing process, and potential safety hazards caused by breakage and collapse of the lifting lug in the testing process are avoided.

Description

A fixture for testing the load of a lifting lug Technical Field

[0001] This utility model relates to the field of testing tooling technology, specifically a lifting lug load testing tooling. Background Technology

[0002] Utility model patent CN222544980U discloses a skid-mounted lifting lug load testing device, including a linear drive device, a connecting buckle, a force measuring device, a tooling beam, and tooling lifting lugs. The tooling beam is positioned directly above the skid-mounted lifting lugs, and tooling lifting lugs are mounted on the tooling beam. The force measuring device is connected to both the tooling lifting lugs and the skid lifting lugs via the connecting buckle. Two linear drive devices are provided, symmetrically arranged with respect to the center line of the skid lifting lugs. Each linear drive device drives the tooling beam to move to the opposite side of the skid lifting lug's direction through a limiting device. Compared to conventional load testing devices, this device offers convenient testing, allowing direct measurement of load test results via the force measuring device, without the need for a crane or gantry crane, or counterweights. However, this device has certain shortcomings: excessive force on the lifting lugs can cause them to break and fly away, creating safety hazards. Furthermore, the device is not easily adjustable or controlled, and it is not convenient for load testing of lifting lugs of different sizes. Therefore, improvements are needed. Summary of the Invention

[0003] The purpose of this utility model is to provide a load testing fixture for lifting lugs, which solves the problems that excessive force on the lifting lugs can cause them to break and fly away, creating safety hazards. At the same time, the device is not easy to adjust and control, and it is not convenient to test the load on lifting lugs of different sizes.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a lifting lug load testing fixture, including a base, an adjustment mechanism on the base, a steel wire rope on the adjustment mechanism, a hook fixedly connected to the end of the steel wire rope, a bracket fixedly connected to the upper end of the base, a fixed cylinder fixedly connected inside the bracket, and a protective mechanism on the bracket.

[0005] Preferably, the adjusting mechanism includes a connecting plate slidably connected to a base. A sliding plate is fixedly connected to the lower end of the connecting plate, and the sliding plate is slidably connected to the base. A motor is fixedly mounted on the surface of the base, and the motor's shaft passes through the base and is rotatably connected to it. A bidirectional screw is fixedly connected to the end of the motor's shaft, and a top plate is threadedly connected to the outer side of the bidirectional screw. The top plate is slidably connected to the base, and a spring is provided on the outer side of the bidirectional screw. The motor drives the bidirectional screw and the top plate to perform threaded movement, which in turn causes the top plate to compress the spring, thereby causing the sliding plate to move the connecting plate. This, in turn, allows the wire rope to move the hook, enabling the device to perform load tests on lifting lugs of different specifications.

[0006] Preferably, the bidirectional screw is rotatably connected to the base and movably connected to the sliding plate. The movement of the top plate is controlled by the bidirectional screw.

[0007] Preferably, one end of the spring is fixedly connected to the slide plate, and the other end of the spring is fixedly connected to the top plate. By setting the spring, the slide plate is elastically compressed.

[0008] Preferably, the protective mechanism includes a cover, which is slidably connected to the inside of the bracket. The cover contacts the fixed cylinder. A pull rod is installed inside the cover via a bearing. The pull rod is rotatably connected to the bracket. A locking block is fixedly connected to the outside of the pull rod. A guide rod is fixedly connected to the upper end of the cover. The guide rod is slidably connected to the bracket. A compression spring is provided on the outside of the guide rod. The compression spring acts on the cover, causing the cover to be elastically pressed against the fixed cylinder. This protects the lifting lug during testing, preventing it from breaking and flying off, which could pose a safety hazard.

[0009] Preferably, one end of the compression spring is fixedly connected to the cover, and the other end of the compression spring is fixedly connected to the bracket. By setting the compression spring, the cover is elastically pressed down.

[0010] Preferably, an elastic pad is adhered to the surface of the bracket, and the elastic pad is slidably connected to a steel wire rope. By providing the elastic pad, cushioning and protection are provided in the event of breakage of the lifting lug.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model uses a motor to drive a bidirectional screw and a top plate to make a threaded movement, which in turn causes the top plate to compress the spring, which in turn causes the sliding plate to move the connecting plate, which in turn causes the wire rope to move the hook, so that the device can perform load tests on lifting lugs of different specifications.

[0013] 2. This utility model uses a compression spring to act on the cover, thereby making the cover elastically pressed against the fixed cylinder, thus protecting the lifting lug during the test and avoiding the safety hazard caused by the lifting lug breaking and flying off during the test. Attached Figure Description

[0014] Figure 1 is a perspective view of the overall structure of this utility model;

[0015] Figure 2 is a bottom view of Figure 1 of this utility model;

[0016] Figure 3 is an enlarged view of section A in Figure 2 of this utility model;

[0017] Figure 4 is a perspective view of the bracket shown in Figure 1 of this utility model.

[0018] In the diagram: 1. Base; 2. Adjustment mechanism; 3. Steel wire rope; 4. Hook; 5. Bracket; 6. Fixing cylinder; 7. Protective mechanism; 21. Connecting plate; 22. Slide plate; 23. Motor; 24. Double-acting screw; 25. Top plate; 26. Spring; 71. Cover; 72. Pull rod; 73. Locking block; 74. Guide rod; 75. Compression spring; 76. Elastic pad. Detailed Implementation

[0019] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please refer to Figures 1-2. A lifting lug load testing fixture includes a base 1, an adjustment mechanism 2 on the base 1, a wire rope 3 on the adjustment mechanism 2, a hook 4 fixedly connected to the end of the wire rope 3, a bracket 5 fixedly connected to the upper end of the base 1, a fixed cylinder 6 fixedly connected inside the bracket 5, and a protective mechanism 7 on the bracket 5.

[0021] Please refer to Figures 1-3. The adjusting mechanism 2 includes a connecting plate 21, which is slidably connected to the base 1. A sliding plate 22 is fixedly connected to the lower end of the connecting plate 21, and the sliding plate 22 is slidably connected to the base 1. A motor 23 is fixedly mounted on the surface of the base 1. The rotating shaft of the motor 23 passes through the base 1 and is rotatably connected to the base 1. A bidirectional screw 24 is fixedly connected to the end of the rotating shaft of the motor 23, and the bidirectional screw 24 is rotatably connected to the base 1 and movably connected to the sliding plate 22. The movement of the top plate 25 is controlled by the bidirectional screw 24. The outer side of the bidirectional screw 24 is threaded... A top plate 25 is connected to the base 1, and the top plate 25 is slidably connected to the base 1. A spring 26 is provided on the outside of the double-acting screw 24. One end of the spring 26 is fixedly connected to the slide plate 22, and the other end of the spring 26 is fixedly connected to the top plate 25. By setting the spring 26, the slide plate 22 is elastically compressed. The motor 23 drives the double-acting screw 24 and the top plate 25 to make threaded movements, which causes the top plate 25 to compress the spring 26, which in turn causes the slide plate 22 to move the connecting plate 21, which in turn causes the wire rope 3 to move the hook 4, so that the device can perform load tests on lifting lugs of different specifications.

[0022] Please refer to Figures 1, 2, and 4. The protective mechanism 7 includes a cover 71. The cover 71 is slidably connected to the inside of the bracket 5. The cover 71 is in contact with the fixed cylinder 6. A pull rod 72 is installed inside the cover 71 via a bearing. The pull rod 72 is rotatably connected to the bracket 5. A locking block 73 is fixedly connected to the outside of the pull rod 72. A guide rod 74 is fixedly connected to the upper end of the cover 71. The guide rod 74 is slidably connected to the bracket 5. A compression spring 75 is provided on the outside of the guide rod 74. One end of the compression spring 75 is fixedly connected to the cover 71. The other end of the compression spring 75 is fixedly connected to the bracket 5. By setting the compression spring 75, the cover 71 is elastically pressed down. An elastic pad 76 is bonded to the surface of the bracket 5. The elastic pad 76 is slidably connected to the steel wire rope 3. By setting the elastic pad 76, buffer protection is provided when the lifting lug breaks. The compression spring 75 acts on the cover 71, thereby making the cover 71 elastically pressed into the fixed cylinder 6. This protects the lifting lug during the test and avoids the safety hazard caused by the lifting lug breaking and flying away during the test.

[0023] The specific implementation process of this utility model is as follows: In use, the cover 71 is moved upward by the pull rod 72, which causes the locking block 73 to move through the bracket 5. Then, the pull rod 72 is rotated, which drives the locking block 73 to rotate, thereby limiting the cover 71. Then, the lifting lug is placed between the fixed cylinder 6 and the cover 71, and the lifting lug is hooked by the hook 4. The compression spring 75 acts on the cover 71, thereby making the cover 71 elastically pressed against the fixed cylinder 6, thus protecting the lifting lug during the test and avoiding the safety hazard caused by the lifting lug breaking and flying off during the test. The motor 23 is started, and the motor 23 drives the bidirectional screw 24 to rotate. The bidirectional screw 24 rotates and makes a threaded movement with the top plate 25, thereby causing the top plate 25 to compress the spring 26. The spring 26 compresses the slide plate 22, thereby causing the slide plate 22 to drive the connecting plate 21 to move, thereby allowing the wire rope 3 to drive the hook 4 to move, so that the device can perform load tests on lifting lugs of different specifications.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture for testing the load of a lifting lug, comprising a base (1), characterized in that: An adjustment mechanism (2) is provided on the base (1), a steel wire rope (3) is provided on the adjustment mechanism (2), a hook (4) is fixedly connected to the end of the steel wire rope (3), a bracket (5) is fixedly connected to the upper end of the base (1), a fixed cylinder (6) is fixedly connected inside the bracket (5), and a protective mechanism (7) is provided on the bracket (5).

2. The lug load testing fixture according to claim 1, characterized in that: The adjustment mechanism (2) includes a connecting plate (21), which is slidably connected to the base (1). A sliding plate (22) is fixedly connected to the lower end of the connecting plate (21). The sliding plate (22) is slidably connected to the base (1). A motor (23) is fixedly installed on the surface of the base (1). The rotating shaft of the motor (23) passes through the base (1) and is rotatably connected to the base (1). A bidirectional screw (24) is fixedly connected to the end of the rotating shaft of the motor (23). A top plate (25) is threadedly connected to the outside of the bidirectional screw (24). The top plate (25) is slidably connected to the base (1). A spring (26) is provided on the outside of the bidirectional screw (24).

3. The lug load testing fixture according to claim 2, characterized in that: The bidirectional screw (24) and the base (1) are rotatably connected, and the bidirectional screw (24) and the slide plate (22) are movably connected.

4. The lug load testing tool of claim 2, wherein: One end of the spring (26) is fixedly connected to the slide plate (22), and the other end of the spring (26) is fixedly connected to the top plate (25).

5. The lug load testing fixture according to claim 1, characterized in that: The protective mechanism (7) includes a cover (71), which is slidably connected to the inside of the bracket (5). The cover (71) is in contact with the fixed cylinder (6). A pull rod (72) is installed inside the cover (71) through a bearing. The pull rod (72) is rotatably connected to the bracket (5). A locking block (73) is fixedly connected to the outside of the pull rod (72). A guide rod (74) is fixedly connected to the upper end of the cover (71). The guide rod (74) is slidably connected to the bracket (5). A compression spring (75) is provided on the outside of the guide rod (74).

6. The lug load testing fixture according to claim 5, characterized in that: One end of the compression spring (75) is fixedly connected to the cover (71), and the other end of the compression spring (75) is fixedly connected to the bracket (5).

7. The lug load testing fixture according to claim 5, characterized in that: An elastic pad (76) is bonded to the surface of the bracket (5), and the elastic pad (76) is slidably connected to the wire rope (3).

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