A clamping mechanism for testing the tensile strength of a rope

Abstract

This utility model discloses a clamping mechanism for testing the tensile strength of ropes and cables. It includes a base, with two limiting rails at the top of the base. Two bearing plates are positioned above the limiting rails, and rail blocks are installed at the corners of the bottom of each bearing plate. The bottom of each rail block is slidably connected to the top of the limiting rails. Positioning seats are fixedly installed on both sides of the top of the base. Telescopic cylinders are installed on the outer walls of the positioning seats, with one end of each cylinder penetrating the positioning seat and connecting to the outer wall of the bearing plate. A control panel is installed on one side of the top of the base. The output of a microcontroller inside the control panel is electrically connected to the input of the telescopic cylinder. A base frame is provided at the top of each bearing plate. This utility model not only improves the applicability of the clamping mechanism but also enhances its convenience in clamping ropes and cables, and ensures effective clamping of the ropes and cables during use.

Description

Technical Field

[0001] This utility model relates to the field of rope and cable performance testing technology, specifically a clamping mechanism for testing the tensile strength of ropes and cables. Background Technology

[0002] In the mechanical property testing of flexible materials such as ropes and cables, tensile strength is one of the core indicators for evaluating their quality and reliability. During the test, the two ends of the rope are fixed on the tensile testing machine by a clamping mechanism and axial tension is applied until it breaks in order to obtain key data such as maximum load-bearing capacity and elongation at break. In order to ensure the clamping effect at both ends of the rope, it is particularly important to develop a clamping mechanism for testing the tensile strength of ropes.

[0003] A cable clamping device, as described in reference announcement number CN212363252U, includes: a platform, support legs, an air source, a main air pipe, branch pipes, annular sleeves, fixing rods, annular inflation rings, and a control panel. The platform has support legs connected to its bottom. The air source is fixed to one side wall of the platform. The main air pipe is located on the top surface of the platform and connected to the air source. Multiple branch pipes are connected to the main air pipe. The control panel is located on one side of the air source. Multiple annular sleeves are arranged on the top surface of the platform via fixing rods connected to their bottom sides, with the center of each annular sleeve on the same horizontal line. Each annular sleeve has an annular groove. A through hole is provided at the bottom of each annular sleeve, through which the branch pipes pass. This device facilitates cable clamping and is less likely to damage the cable. However, while this device can be well applied, it is generally inconvenient to adjust the spacing between the clamping components, making it difficult to clamp cables of different lengths. This limits the device's usability and requires further improvement. Utility Model Content

[0004] The purpose of this utility model is to provide a clamping mechanism for testing the tensile strength of ropes and cables, so as to solve the problem that although the device proposed in the background art can be applied well, it is usually inconvenient to adjust the spacing between the clamping components, making it difficult to clamp cables of different lengths, which limits the use of the device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamping mechanism for testing the tensile strength of a rope, comprising a base, two limiting rails at the top of the base, two bearing plates above the two limiting rails, rail blocks installed at the corners of the bottom of the bearing plates, the bottom ends of the rail blocks being slidably connected to the top ends of the limiting rails, positioning seats fixedly installed on both sides of the top of the base, telescopic cylinders installed on the outer walls of the positioning seats, one end of the telescopic cylinders penetrating the positioning seats and connecting to the outer walls of the bearing plates, a control panel installed on one side of the top of the base, the output end of the microcontroller inside the control panel being electrically connected to the input end of the telescopic cylinder, and a base frame at the top of each bearing plate.

[0006] Preferably, a U-shaped frame is provided above the base frame, and support columns are provided on both sides of the bottom end of the U-shaped frame. The bottom end of the support column is fixedly connected to the top end of the base frame. The U-shaped frame is supported and placed above the base frame by the support columns.

[0007] Preferably, a guide rod is fixedly installed on the upper inner wall between the U-shaped frames, and movable seats are movably installed on the outer walls on both sides of the guide rod. A connecting plate is fixedly installed on the top of each movable seat. The connecting plate is used to position the clamp.

[0008] Preferably, a clamp is installed at the top of the connecting plate, and the inner wall of the clamp is provided with a plurality of protrusions. The protrusions are provided to improve the clamping effect of the clamp on the cable.

[0009] Preferably, linkage arms are rotatably mounted on the outer walls of both sides of the movable seat, and a motor is installed at the center of the top of the base frame. The input end of the motor is electrically connected to the output end of the microcontroller inside the control panel. The motor is configured to drive the lead screw to rotate.

[0010] Preferably, the output end of the motor is equipped with a rotating shaft via a coupling. The top end of the rotating shaft extends to the inner side of the U-shaped frame and is provided with a lead screw. A nut pair is threaded on the outer wall of the upper end of the lead screw. The outer wall of the nut pair is rotatably connected to the inner wall of the lower end of the linkage arm. The nut pair slides on the outer wall of the lead screw so that the movable seat driven by the linkage arm slides towards the outer wall of the guide rod.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the clamping mechanism for testing the tensile strength of ropes not only improves the applicability of the clamping mechanism, but also improves the convenience of the clamping mechanism when clamping ropes, and ensures the clamping effect of the clamping mechanism on the ropes when in use.

[0012] (1) The bearing plate is driven to move horizontally by the telescopic cylinder, so that the bearing plate drives the rail block to slide on the top of the limit rail. This can adjust the distance between the two bearing plates, so that the distance between the two sets of clamping components changes, making it easier to clamp ropes of different lengths, thereby improving the applicability of the clamping mechanism.

[0013] (2) By placing the two ends of the rope between the two clamps of the two clamping components, when the motor is started, the motor drives the screw to rotate via the rotating shaft. At this time, the nut pair slides down on the outer wall of the screw, so that the movable seat is driven by the linkage arm to move closer to each other on the outer wall of the guide rod, so that the two clamps can move closer to each other to clamp and fix the two ends of the rope, thereby improving the convenience of the clamping mechanism when clamping the rope.

[0014] (3) By setting several protrusions on the inner wall of the clamp, when the clamp holds the cable, the friction between the clamp and the cable can be increased, so as to reduce the phenomenon of slippage of the cable on the inner wall of the clamp after it is clamped, thereby ensuring the clamping effect of the clamping mechanism on the cable when it is used. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0017] Figure 3 This is a front view structural diagram of the present invention;

[0018] Figure 4 This utility model Figure 3 Enlarged structural diagram at point B.

[0019] In the diagram: 1. Base; 2. Limiting rail; 3. Bearing plate; 4. Rail block; 5. Positioning seat; 6. Telescopic cylinder; 7. Control panel; 8. Base frame; 9. Support column; 10. U-shaped frame; 11. Motor; 12. Rotating shaft; 13. Lead screw; 14. Nut pair; 15. Guide rod; 16. Linkage arm; 17. Movable seat; 18. Connecting plate; 19. Clamp; 20. Protruding strip. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figure 1-4This utility model provides an embodiment of a clamping mechanism for testing the tensile strength of a rope, comprising a base 1, two limiting rails 2 at the top of the base 1, two bearing plates 3 above the two limiting rails 2, rail blocks 4 at the corners of the bottom of the bearing plates 3, the bottom of the rail blocks 4 being slidably connected to the top of the limiting rails 2, positioning seats 5 fixedly installed on both sides of the top of the base 1, telescopic cylinders 6 installed on the outer wall of the positioning seats 5, one end of the telescopic cylinders 6 passing through the positioning seats 5 and connected to the outer wall of the bearing plates 3, a control panel 7 installed on one side of the top of the base 1, the output end of the microcontroller inside the control panel 7 being electrically connected to the input end of the telescopic cylinders 6, a base frame 8 at the top of the bearing plates 3, a U-shaped frame 10 above the base frame 8, support columns 9 on both sides of the bottom of the U-shaped frame 10, and the bottom ends of the support columns 9 being fixedly connected to the top of the base frame 8;

[0022] In use, the support column 9 is used to support and place the U-shaped frame 10 above the base frame 8;

[0023] Guide rods 15 are fixedly installed on the upper inner wall between the U-shaped frames 10. Movable seats 17 are movably installed on the outer walls on both sides of the guide rods 15. Connecting plates 18 are fixedly installed on the top of the movable seats 17.

[0024] In use, the connecting plate 18 is used to position the chuck 19.

[0025] A clamp 19 is installed at the top of the connecting plate 18, and several protrusions 20 are provided on the inner wall of the clamp 19;

[0026] In use, the protrusions 20 are designed to enhance the clamping effect of the chuck 19 on the cable.

[0027] Linkage arms 16 are rotatably mounted on the outer walls of both sides of the movable seat 17. A motor 11 is installed at the center of the top of the base frame 8. The input end of the motor 11 is electrically connected to the output end of the microcontroller inside the control panel 7.

[0028] In use, the motor 11 is configured to drive the lead screw 13 to rotate;

[0029] The output end of the motor 11 is equipped with a rotating shaft 12 via a coupling. The top end of the rotating shaft 12 extends to the inner side of the U-shaped frame 10 and is provided with a lead screw 13. A nut pair 14 is threaded on the outer wall of the upper end of the lead screw 13. The outer wall of the nut pair 14 is rotatably connected to the inner wall of the lower end of the linkage arm 16.

[0030] In use, the nut assembly 14 slides on the outer wall of the lead screw 13 so that the movable seat 17 is driven by the linkage arm 16 to slide towards each other on the outer wall of the guide rod 15.

[0031] In this embodiment, the two ends of the rope are first placed between the two clamps 19 of the two sets of clamping components. When the motor 11 is started, the motor 11 drives the lead screw 13 to rotate via the rotating shaft 12. At this time, the nut pair 14 slides down the outer wall of the lead screw 13, so that it drives the movable seat 17 to move closer to each other on the outer wall of the guide rod 15 via the linkage arm 16. This brings the two clamps 19 closer together to clamp and fix the two ends of the rope. Then, by setting a number of protrusions 20 on the inner wall of the clamps 19, the rope can be lifted. The friction between the clamp 19 and the cable is reduced to minimize slippage of the cable on the inner wall of the clamp 19, thus ensuring the clamping effect of the clamping mechanism. Finally, the telescopic cylinder 6 drives the bearing plate 3 to move horizontally, causing the bearing plate 3 to slide along the top of the limit rail 2. This allows the distance between the two bearing plates 3 to be adjusted, changing the distance between the two sets of clamping components. This facilitates clamping operations on cables of different lengths and makes it easy to perform tensile tests on the cables, thus completing the use of the clamping mechanism.

Claims

1. A clamping mechanism for testing the tensile strength of ropes and cables, characterized in that: The base (1) includes a base (1), which has two limiting rails (2) at its top. Two bearing plates (3) are provided above the two limiting rails (2). Rail blocks (4) are installed at the corners of the bottom of the bearing plates (3). The bottom of the rail blocks (4) is slidably connected to the top of the limiting rails (2). Positioning seats (5) are fixedly installed on both sides of the top of the base (1). Telescopic cylinders (6) are installed on the outer wall of the positioning seats (5). One end of the telescopic cylinders (6) passes through the positioning seats (5) and is connected to the outer wall of the bearing plates (3). A control panel (7) is installed on one side of the top of the base (1). The output end of the microcontroller inside the control panel (7) is electrically connected to the input end of the telescopic cylinder (6). The top of the bearing plates (3) is provided with a base frame (8).

2. The clamping mechanism for testing the tensile strength of a rope according to claim 1, characterized in that: A U-shaped frame (10) is provided above the base frame (8), and support columns (9) are provided on both sides of the bottom end of the U-shaped frame (10). The bottom end of the support column (9) is fixedly connected to the top end of the base frame (8).

3. The clamping mechanism for testing the tensile strength of a rope according to claim 2, characterized in that: Guide rods (15) are fixedly installed on the upper inner walls between the U-shaped frames (10). Movable seats (17) are movably installed on the outer walls on both sides of the guide rods (15). Connecting plates (18) are fixedly installed on the top of each movable seat (17).

4. The clamping mechanism for testing the tensile strength of a rope according to claim 3, characterized in that: The top of the connecting plate (18) is equipped with a clamp (19), and the inner wall of the clamp (19) is provided with a plurality of protrusions (20).

5. A clamping mechanism for testing the tensile strength of a rope or cable according to claim 3, wherein: Linkage arms (16) are rotatably mounted on the outer walls on both sides of the movable seat (17). A motor (11) is installed at the center of the top of the base frame (8). The input end of the motor (11) is electrically connected to the output end of the microcontroller inside the control panel (7).

6. A clamping mechanism for tensile strength testing of a rope or cable according to claim 5, characterized in that: The output end of the motor (11) is equipped with a rotating shaft (12) via a coupling. The top end of the rotating shaft (12) extends to the inner side of the U-shaped frame (10) and is provided with a lead screw (13). A nut pair (14) is threaded on the outer wall of the upper end of the lead screw (13). The outer wall of the nut pair (14) is rotatably connected to the inner wall of the lower end of the linkage arm (16).

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