A foot buckle seat belt tensile testing instrument

Abstract

This utility model relates to the field of tensile testing equipment and discloses a foot buckle safety belt tensile testing equipment, including a tensile testing machine. A protective component is provided on one side of the tensile testing machine, and a stabilizing component is provided at the bottom of the tensile testing machine. The protective component includes a protective cloth located on one side of the tensile testing machine. A fixing frame is fixedly connected to the outer wall of the tensile testing machine, and a protective shell is fixedly connected inside the fixing frame. A rotating ring is rotatably connected inside the protective shell. A spring is fixedly connected to one side of the protective cloth, and one side of the spring extends through to the inner wall of the rotating ring and is fixedly connected to a rotating bar. In this utility model, the protective cloth blocks one side of the tensile testing machine, and the fixing component fixes the position of the protective cloth. When not in use, the rebound force of the spring pushes the protective cloth back to its original position, achieving the protective effect of the equipment and enhancing its protective performance.

Description

Technical Field

[0001] This utility model relates to the field of tensile testing instruments, and in particular to a foot buckle seat belt tensile testing instrument. Background Technology

[0002] As a critical safety protection device in high-altitude operations such as power and construction, the mechanical performance of foot-buckle safety belts directly affects the lives of workers. The foot-buckle safety belt tensile testing machine, as the core equipment for testing its tensile strength, needs to conduct destructive tests on the equipment under simulated real-world stress scenarios to verify its ultimate load-bearing capacity. With the continuous improvement of industry safety standards, higher requirements are placed on the safety, reliability, and ease of operation of the testing machine.

[0003] Existing foot-buckle seatbelt tensile testing machines are mainly based on the principle of traditional tensile testing machines. They typically employ an electrically or hydraulically driven linear tensile mechanism, applying gradually increasing tensile loads to the foot-buckle seatbelt through clamps at both ends. Their mechanical structure mainly includes a base, column, crossbeam, loading motor, force sensor, and data acquisition components. The technical principle is that the motor drives a lead screw or hydraulic cylinder piston, causing relative displacement of the clamps, thus subjecting the foot-buckle seatbelt to tensile force. The force sensor monitors the tensile force value in real time and feeds it back to the control components. Loading stops when the preset load is reached or the sample breaks. Regarding protective design, existing equipment mostly uses fixed guardrails or transparent protective panels to isolate the test area, and these protective devices typically lack automatic reset or dynamic response functions.

[0004] However, existing foot buckle safety belt tensile testing equipment poses significant safety hazards when dealing with sudden breakage of foot buckle safety belts. When a foot buckle safety belt breaks unexpectedly due to exceeding its tensile limit, the impact load generated at the moment of breakage causes fragments or broken parts to fly at high speed. Traditional fixed protective devices cannot dynamically block such sudden flying objects and lack an automatic reset protection mechanism, making it difficult to quickly restore the protective state after the test. This leads to the risk of surrounding personnel being hit by flying objects during the test, especially in scenarios involving frequent destructive testing. The protective limitations of traditional equipment are further highlighted, failing to meet the refined risk control requirements of modern safe operations. Therefore, a foot buckle safety belt tensile testing equipment is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a foot buckle safety belt tensile tester, which aims to improve the problem that traditional equipment may cause the foot buckle safety belt to break unexpectedly due to excessive tension during the tensile test, thereby causing injury to surrounding workers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A foot buckle seat belt tensile testing instrument includes a tensile testing machine, a protective component is provided on one side of the tensile testing machine, and a stabilizing component is provided at the bottom of the tensile testing machine;

[0008] The protective assembly includes a protective cloth located on one side of the tensile testing machine. A fixed frame is fixedly connected to the outer wall of the tensile testing machine. A protective shell is fixedly connected inside the fixed frame. A rotating ring is rotatably connected inside the protective shell. A spring is fixedly connected to one side of the protective cloth. One side of the spring extends through to the inner wall of the rotating ring and is fixedly connected to a rotating bar. The rotating bar is rotatably connected inside the fixed frame. The other side of the protective cloth extends through to the bottom of the protective shell and is fixedly connected to a connecting block. A fixing component is provided at the bottom of the connecting block.

[0009] As a further description of the above technical solution:

[0010] The fixing component includes multiple retaining balls located at the bottom of the connecting block one. A connecting shell is fixedly connected inside the connecting block one. Multiple holes are opened inside the connecting shell. The inner wall of each hole has a structure that is larger in the middle and smaller at both ends. Each retaining ball is slidably connected to the inner wall of the hole.

[0011] As a further description of the above technical solution:

[0012] A fixing ring is fixedly connected to the inner wall of the connecting shell. A transmission column is slidably connected inside the fixing ring. A pressing plate is fixedly connected to the top of the transmission column. A round push block is fixedly connected to the bottom of the transmission column. The round push block is in contact with multiple locking balls.

[0013] As a further description of the above technical solution:

[0014] A spring strip is provided on the outer wall of the transmission column. One end of the spring strip is fixedly connected to the top of the fixed ring, and the other end of the spring strip is fixedly connected to a connecting ring. The inner wall of the connecting ring is fixedly connected to the outer wall of the transmission column.

[0015] As a further description of the above technical solution:

[0016] The stabilizing component includes multiple spring bars 2 and 3, all of which are located at the bottom of the tensile testing machine. A base is sleeved and connected to the bottom of the tensile testing machine, and multiple connecting columns and connecting blocks 2 are fixedly connected to the bottom of the tensile testing machine.

[0017] As a further description of the above technical solution:

[0018] Each of the connecting columns is fitted with a second fixing shell on its outer wall. The bottom of the multiple second fixing shells is fixedly connected to the bottom of the inner wall of the base. The top of each second spring bar is fixedly connected to the bottom of the connecting column. The bottom of each second spring bar is fixedly connected to the bottom of the inner wall of the second fixing shell. The bottom of the inner wall of the fixing frame is fixedly connected to a first fixing shell. The inner wall of the first fixing shell fits into the outer wall of the connecting shell.

[0019] As a further description of the above technical solution:

[0020] Each of the connecting blocks 2 is rotatably connected to a transmission plate, each of the transmission plates is rotatably connected to a connecting block 3, and each of the connecting blocks 3 is fixedly connected to a slider at its bottom. Multiple sliders are slidably connected inside the base.

[0021] As a further description of the above technical solution:

[0022] One end of each of the spring bars is fixedly connected to the outer wall of the connecting block, and the other end of each of the spring bars is fixedly connected to a protective pad. The outer walls of the multiple protective pads are fixedly connected to the inner side wall of the base.

[0023] This utility model has the following beneficial effects:

[0024] In this invention, a protective cloth is used to block one side of the tensile testing machine, and a fixing component is used to fix the position of the protective cloth. When it is not needed, the protective cloth is pushed back to its original position by the rebound force of the spring, thus achieving the protective effect of the equipment. This solves the problem that in traditional equipment, the foot buckle safety belt may break unexpectedly due to excessive tension during the tensile test, thereby causing injury to surrounding workers, and enhances the protective performance of the equipment.

[0025] In this invention, the vibration force generated by the operation of the equipment is transmitted to the surfaces of the second and third spring strips through the connecting column and the connecting block three, causing them to compress and thus reducing the vibration force generated by the operation of the equipment. This solves the problem that the vibration force generated by the traditional equipment during operation will cause the foot buckle tension belt to shake, which can easily affect the accuracy of the equipment's detection of the foot buckle safety belt tension. This enhances the stability of the equipment during use. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a foot buckle seat belt tensile testing instrument proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the protective shell of a foot buckle seat belt tensile testing instrument proposed in this utility model;

[0028] Figure 3This is a schematic diagram of the spring structure of a foot buckle seat belt tensile testing instrument proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the cross-sectional structure of the connecting shell of the foot buckle safety belt tensile tester proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the cross-sectional structure of the base of the foot buckle seat belt tensile tester proposed in this utility model;

[0031] Figure 6 This is a schematic diagram of the three-explosive structure of the spring bar in a foot buckle seat belt tensile testing instrument proposed in this utility model.

[0032] Legend:

[0033] 1. Tensile testing machine; 2. Fixed frame; 3. Protective shell; 4. Rotary ring; 5. Rotary bar; 6. Protective cloth; 7. Connecting block one; 8. Spring-loaded spring; 9. Connecting shell; 10. Fixed shell one; 11. Connecting ring; 12. Transmission column; 13. Pressing plate; 14. Spring bar one; 15. Fixed ring; 16. Round push block; 17. Ball clamp; 18. Base; 19. Connecting column; 20. Fixed shell two; 21. Connecting block two; 22. Transmission plate; 23. Spring bar two; 24. Connecting block three; 25. Spring bar three; 26. Protective pad; 27. Slider. Detailed Implementation

[0034] 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.

[0035] Reference Figures 1-4 This utility model provides an embodiment of a foot buckle safety belt tensile testing instrument, including a tensile testing machine 1. The mechanical structure of the tensile testing machine 1 mainly includes a base, column, crossbeam, loading motor, force sensor, and data acquisition components. The technical principle is that the motor drives the lead screw or hydraulic cylinder piston to move, which drives the clamp to generate relative displacement, thereby causing the foot buckle safety belt to bear tensile force. The force sensor monitors the tensile force value in real time and feeds it back to the control component. Loading stops when the preset load is reached or the sample breaks. This is existing technology and will not be described in detail here. A protective component is provided on one side of the tensile testing machine 1 to protect one side of the tensile testing machine 1. A stabilizing component is provided at the bottom of the tensile testing machine 1 to keep the tensile testing machine 1 stable during operation.

[0036] The protective assembly includes a protective cloth 6, located on one side of the tensile testing machine 1, used to shield and protect the broken foot strap safety belt during testing, preventing flying debris from injuring personnel. A fixed frame 2 is fixedly connected to the outer wall of the tensile testing machine 1, providing a base for the installation and support of the protective assembly. A protective shell 3 is fixedly connected inside the fixed frame 2, protecting internal components such as the rotating ring 4 and the spring 8. The rotating ring 4 is rotatably connected inside the protective shell 3, supporting the spring 8 and ensuring smooth extension and retraction of the protective cloth 6. A spring 8 is fixedly connected to one side of the protective cloth 6. 8 provides a rebound force to automatically retract the protective cloth 6 when not in use. One side of the spring spring 8 extends through to the inner wall of the rotating ring 4 and is fixedly connected to a rotating bar 5. The rotating bar 5 is used to fix the spring spring 8 and transmit torque. The rotating bar 5 is rotatably connected inside the fixing frame 2. The other side of the protective cloth 6 extends through to the bottom of the protective shell 3 and is fixedly connected to a connecting block 7. The connecting block 7 is used to connect the protective cloth 6 and the fixing assembly. The fixing assembly is provided at the bottom of the connecting block 7. The fixing assembly includes multiple locking balls 17. The multiple locking balls 17 are located at the bottom of the connecting block 7 and are used to engage with the inner wall of the fixing shell 10 to achieve position fixation. Connecting block 7 has a connecting shell 9 fixedly connected inside. The connecting shell 9 accommodates the ball 17 and provides sliding space. Multiple holes are formed inside the connecting shell 9, each with an inner wall that is wider in the middle and narrower at both ends to limit the movement range of the ball 17. Each ball 17 is slidably connected to the inner wall of the hole. A fixing ring 15 is fixedly connected to the inner wall of the connecting shell 9. The fixing ring 15 supports the transmission column 12 and the spring strip 14. The transmission column 12 is slidably connected inside the fixing ring 15. The transmission column 12 transmits pressing force and drives the round push block 16 to move. A pressing plate 13 is fixedly connected to the top of the transmission column 12 for pressing... The disc 13 is used to accept hand pressing operation. A round push block 16 is fixedly connected to the bottom end of the transmission column 12. The round push block 16 is used to push the locking ball 17 out of the locking state. The round push block 16 is in contact with multiple locking balls 17. A spring strip 14 is provided on the outer wall of the transmission column 12. The spring strip 14 is used to provide a reset elastic force to make the round push block 16 automatically reset. One end of the spring strip 14 is fixedly connected to the top of the fixing ring 15. The other end of the spring strip 14 is fixedly connected to the connecting ring 11. The connecting ring 11 is used to connect the spring strip 14 and the transmission column 12. The inner wall of the connecting ring 11 is fixedly connected to the outer wall of the transmission column 12.

[0037] Reference Figure 1 , Figure 5 and Figure 6The stabilizing components include multiple spring bars 23 and 35, all located at the bottom of the tensile testing machine 1 to absorb and buffer vibrations during operation. A base 18 is fitted onto the bottom of the tensile testing machine 1, supporting the entire device and providing a mounting foundation. Multiple connecting posts 19 and connecting blocks 21 are fixedly connected to the bottom of the tensile testing machine 1. Connecting posts 19 transmit vibrations to the spring bars 23, and connecting blocks 21 connect to the transmission plate 22. A fixing shell 20 is fitted onto the outer wall of each connecting post 19, limiting its range of motion. The bottoms of the fixing shells 20 are fixedly connected to the bottom of the inner wall of the base 18. The top of each spring bar 23 is fixedly connected to the bottom of the connecting post 19, absorbing vertical vibrations. The bottom of each spring bar 23 is fixedly connected to the bottom of the inner wall of the fixing shell 20. The bottom of the inner wall of the fixing frame 2... A fixed housing 10 is fixedly connected to the base 18. The fixed housing 10 is used to cooperate with the connecting housing 9 to fix the protective cloth 6. The inner wall of the fixed housing 10 fits with the outer wall of the connecting housing 9. A transmission plate 22 is rotatably connected inside each connecting block 21. The transmission plate 22 is used to transmit vibration to the connecting block 24. A connecting block 24 is rotatably connected inside each transmission plate 22. The connecting block 24 is used to drive the slider 27 to move. A slider 27 is fixedly connected to the bottom of each connecting block 24. The slider 27 is used to limit the movement direction of the connecting block 24. Multiple sliders 27 are slidably connected inside the base 18. One end of each spring bar 25 is fixedly connected to the outer wall of the connecting block 24. The spring bar 25 is used to absorb horizontal vibration. The other end of each spring bar 25 is fixedly connected to a protective pad 26. The protective pad 26 is used to protect the inner wall of the base 18 from wear. The outer walls of multiple protective pads 26 are fixedly connected to the inner side wall of the base 18.

[0038] Working principle: During the tensile test of the foot buckle safety belt, the operator supports the bottom of the connecting block 7 with his hands and presses down on the pressing plate 13. This causes the round push block 16 to separate from the outer wall of the locking ball 17 through the transmission column 12, providing sliding space for the locking ball 17 inside the connecting shell 9. Since the internal hole of the connecting shell 9 has a structure that is large in the middle and small at both ends, it can provide sliding space for the locking ball 17 and also prevent the locking ball 17 from accidentally slipping out of the connecting shell 9. As the transmission column 12 moves, it compresses the spring bar 14 via the connecting ring 11. This pulls the connecting block 7 downwards, causing the protective cloth 6 to unwind outwards, penetrating the interior of the protective shell 3, and moving downwards simultaneously. During this process, the unwinding of the protective cloth 6 also drives the spring spring 8 to unwind outwards. Once the connecting shell 9 has moved into the fixed shell 10, the pressure on the pressing plate 13 is released, and the rebound force of the spring bar 14 pushes the round push block 16 back to its original position, thus engaging the locking ball 17 with the inclined surface of the inner wall of the fixed shell 10. The protective cloth 6 at the top of the connecting block 7 is fixed, and the protective cloth 6 covers one side of the tensile testing machine 1. After the equipment has finished testing the foot buckle safety belt, according to the same principle, the connecting shell 9 is separated from the inner wall of the fixed shell 10, and the rebound force of the spring 8 is used to push the protective cloth 6 to reset, thus achieving the protective effect of the equipment. This solves the problem that in traditional equipment, the foot buckle safety belt may break unexpectedly due to excessive tension during the tensile test, thereby causing injury to the surrounding workers, and enhances the protective performance of the equipment.

[0039] The vibration generated during equipment use causes it to slide on the inner wall of the base 18, pushing the connecting block 21 and the connecting column 19 to move. As the connecting column 19 moves along the inner wall of the fixed shell 20, it compresses the spring strip 23. The fixed shell 20 limits the movement of the connecting column 19. While the connecting block 21 moves, it drives the connecting blocks 24 on both sides to move in the opposite direction via the transmission plate 22, compressing the spring strip 25. Simultaneously, the transmission plate 22 drives the slider 27 to slide synchronously inside the base 18. The movement direction of connecting block 3 24 is limited. By limiting the position of connecting column 19 and connecting block 3 24, the vibration force generated by the equipment is accurately transmitted to the surface of spring strip 2 23 and spring strip 3 25. The compression of spring strip 2 23 and spring strip 3 25 reduces the vibration force generated by the equipment, thereby reducing the vibration force generated by the equipment operation. This solves the problem that the vibration force generated by the traditional equipment during operation will cause the foot buckle tension belt to shake, which can easily affect the accuracy of the equipment's detection of the foot buckle safety belt tension. This enhances the stability of the equipment during use.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A test apparatus for a crampons harness, comprising a tensile machine (1), characterized in that: A protective component is provided on one side of the tensile testing machine (1), and a stabilizing component is provided at the bottom of the tensile testing machine (1); The protective assembly includes a protective cloth (6), which is located on one side of the tensile testing machine (1). A fixed frame (2) is fixedly connected to the outer wall of the tensile testing machine (1). A protective shell (3) is fixedly connected inside the fixed frame (2). A rotating ring (4) is rotatably connected inside the protective shell (3). A spring-loaded spring (8) is fixedly connected to one side of the protective cloth (6). One side of the spring-loaded spring (8) extends through to the inner wall of the rotating ring (4) and is fixedly connected to a rotating bar (5). The rotating bar (5) is rotatably connected inside the fixed frame (2). The other side of the protective cloth (6) extends through to the bottom of the protective shell (3) and is fixedly connected to a connecting block (7). A fixing component is provided at the bottom of the connecting block (7).

2. A harness pull test device according to claim 1, wherein: The fixing component includes multiple locking balls (17), which are located at the bottom of the connecting block one (7). A connecting shell (9) is fixedly connected inside the connecting block one (7). Multiple holes are opened inside the connecting shell (9). The inner wall of each hole is large in the middle and small at both ends. Each locking ball (17) is slidably connected to the inner wall of the hole.

3. A harness pull test device according to claim 2, wherein: A fixing ring (15) is fixedly connected to the inner wall of the connecting shell (9). A transmission column (12) is slidably connected inside the fixing ring (15). A pressing plate (13) is fixedly connected to the top of the transmission column (12). A round push block (16) is fixedly connected to the bottom of the transmission column (12). The round push block (16) is in contact with multiple locking balls (17).

4. A harness pull test device according to claim 3, wherein: The outer wall of the transmission column (12) is provided with a spring strip (14), one end of the spring strip (14) is fixedly connected to the top of the fixed ring (15), and the other end of the spring strip (14) is fixedly connected to a connecting ring (11), and the inner wall of the connecting ring (11) is fixedly connected to the outer wall of the transmission column (12).

5. The foot buckle safety belt tensile testing apparatus according to claim 1, characterized in that: The stabilizing component includes multiple spring bars two (23) and spring bars three (25), all of which are located at the bottom of the tension machine (1). The bottom of the tension machine (1) is fitted with a base (18), and the bottom of the tension machine (1) is fixedly connected with multiple connecting columns (19) and connecting blocks two (21).

6. The foot buckle seat belt tensile testing apparatus according to claim 5, characterized in that: Each of the connecting columns (19) is fitted with a fixed shell two (20) on its outer wall. The bottom of multiple fixed shell two (20) is fixedly connected to the bottom of the inner wall of the base (18). The top of each spring bar two (23) is fixedly connected to the bottom of the connecting column (19). The bottom of each spring bar two (23) is fixedly connected to the bottom of the inner wall of the fixed shell two (20). The bottom of the inner wall of the fixed frame (2) is fixedly connected with a fixed shell one (10). The inner wall of the fixed shell one (10) fits with the outer wall of the connecting shell (9).

7. A foot buckle safety belt tensile testing apparatus according to claim 6, characterized in that: Each of the connecting blocks two (21) is rotatably connected to a transmission plate (22), each of the transmission plates (22) is rotatably connected to a connecting block three (24), each of the connecting blocks three (24) is fixedly connected to a slider (27) at its bottom, and multiple sliders (27) are slidably connected inside the base (18).

8. The foot buckle safety belt tensile testing apparatus according to claim 7, characterized in that: One end of each of the three spring bars (25) is fixedly connected to the outer wall of the three connecting blocks (24), and the other end of each of the three spring bars (25) is fixedly connected to a protective pad (26). The outer walls of the multiple protective pads (26) are fixedly connected to the inner wall of the base (18).

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