A device for testing the strength of cable outer insulation layer

Abstract

This utility model relates to the field of cable outer insulation strength testing technology, specifically, to a testing device for cable outer insulation strength. The device includes a base plate, on which a testing assembly is mounted. The testing assembly includes a fixed seat. The fixed seat is fixedly connected to one end of the top of the base plate. First limiting rods are symmetrically fixed to both sides of the fixed seat. First moving blocks are arranged on both sides of the fixed seat. Each moving block is sleeved outside the cross-section of the first limiting rod. A clamping block is fixedly connected to the top of each moving block. A moving groove is formed at the top of the base plate away from the fixed seat. A sliding block is arranged inside the moving groove. A moving seat is fixedly connected to the top of the sliding block. A rotating shaft is rotatably mounted on the moving seat through a screw hole. One end of the rotating shaft is connected to the base plate. Through the coordinated operation of the testing assembly, the cable is tightened while being fixed, preventing the testing point position from shifting due to cable slack during testing, thus ensuring the accuracy of the testing results.

Description

Technical Field

[0001] This utility model relates to the field of cable outer insulation layer strength testing technology, and more specifically, to a device for testing the strength of cable outer insulation layer. Background Technology

[0002] During installation, cables need to be bent at large angles depending on the installation location. Therefore, after the cable is manufactured, the strength of the cable insulation layer needs to be tested to determine whether the cable meets the requirements for large-angle bending.

[0003] A search revealed CN215866319U, which discloses a device for testing the strength of the outer insulation layer of a cable. The device includes a positioning sleeve, with adjusting rods fitted onto the inner left and right ends of the positioning sleeve. The left end of the adjusting rod is threadedly connected to the adjusting sleeve, and the right end of the adjusting rod is fixedly connected to a clamping plate. The top and bottom ends of the clamping plate are fixedly connected to upper piercing plates. By using a limit bolt and a sliding sleeve, the limit rod is locked in position outside the connecting rod. A hydraulic rod changes the deflection position of the connecting rod at the top of the positioning sleeve. The connecting rod and the limit rod push the cable, and the clamping plate and upper piercing plate clamp the cable, thus completing the yield strength test of the cable and providing data for cable laying design.

[0004] The aforementioned patent still has shortcomings in practical use. When fixing cables, the existing technology may result in slack between the cables, causing the detection position to shift. This makes it impossible for the working end of the detection component to operate perpendicular to the cable insulation layer, affecting the accuracy of the detection results.

[0005] Based on this, this utility model discloses a device for testing the strength of the outer insulation layer of a cable. Utility Model Content

[0006] To address the problem mentioned in the background art that the existing technology results in cable slack during cable fixing, leading to a shift in the detection position and preventing the detection component from operating perpendicularly to the cable insulation layer, thus affecting the accuracy of the detection results, this utility model provides a cable outer insulation layer strength detection device. The device includes a base plate, on which a detection component is mounted. The detection component includes a fixing seat. The fixing seat is fixedly connected to one end of the top of the base plate. First limiting rods are symmetrically fixed to both sides of the fixing seat. First moving blocks are provided on both sides of the fixing seat, each first moving block being sleeved outside the cross-section of the first limiting rod. A clamping block is fixedly connected to the top of each first moving block. Clamping grooves are formed on the opposite vertical surfaces of each clamping block, and anti-slip pads are adhered inside the clamping grooves. A moving groove is formed at the top of the base plate away from the fixing seat, and a sliding block is provided inside the moving groove. A moving seat is fixedly connected to the top of the sliding block. A rotating shaft is rotatably mounted on the moving seat through a screw hole, and one end of the rotating shaft is connected to the base plate.

[0007] As a further improvement to this technical solution, second limiting rods are symmetrically fixed to both sides of the movable seat, and second moving blocks are provided on both sides of the movable seat body. The second moving blocks are sleeved outside the cross section of the second limiting rods. A second clamping block is fixed to the top of each second moving block. A clamping groove is provided on the relative vertical structural surface of the second clamping block, and an anti-slip pad is pasted inside the clamping groove.

[0008] As a further improvement to this technical solution, a mounting bracket is fixed on one side of the top of the base plate near the fixed seat. A drive motor is mounted on the side of the mounting bracket away from the fixed seat. A bidirectional lead screw is mounted on the output shaft end of the drive motor. A structural cavity is opened inside the body of the fixed seat near the movable seat. The rod of the bidirectional lead screw passes through the opening space of the structural cavity and extends to the outside. A gear is fixedly sleeved on the outside of the rod section inside the structural cavity. The end of the rotating shaft away from the movable seat is inserted into the structural cavity and has threads. The gear meshes with the threaded end of the rotating shaft. Threads are opened at both ends of the bidirectional lead screw, and the first moving blocks on both sides are respectively sleeved on the ends of the bidirectional lead screw through threaded holes.

[0009] As a further improvement to this technical solution, a linkage rod is fixedly connected to the end face of the first moving block near the moving seat, and a sliding hole is opened inside the second moving block. The end of the linkage rod passes through the sliding hole and extends to the outside. Placement slots are opened on the top of both the fixed seat and the moving seat. The vertical cross-sectional dimensions of the first clamping block are the same as those of the second clamping block.

[0010] As a further improvement to this technical solution, an adjustment groove is provided on the top side of the base plate away from the mounting frame. An adjustment block is provided inside the adjustment groove. A movable frame is connected to the top of the adjustment block. A pushing hole is provided on the side of the movable frame near the rotating shaft. A limit block is slidably provided inside the pushing hole. A cutting tool is installed on the side of the limit block near the rotating shaft. A pressure gauge is installed between the two sides of the movable frame.

[0011] As a further improvement to this technical solution, an electric push rod is installed on the top side of the base plate via a fixing frame, and the pushing end of the electric push rod is connected to the movable frame. A dimension line is engraved on the top of the base plate near the opening of the adjustment groove.

[0012] Compared with existing technologies, the beneficial effects of this utility model are:

[0013] 1. In this cable outer insulation layer strength testing device, the detection components work together to prevent the detection point from shifting due to insufficient tension when the cable is fixed, ensuring that the detection point is perpendicular to the insulation layer and ensuring the accuracy of the monitoring results. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a structural diagram showing the installation position of the No. 1 clamping block in this utility model;

[0016] Figure 3 This is a structural diagram showing the installation position of the No. 2 clamping block in this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the fixing base of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the movable base of this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the mobile frame used in this utility model.

[0020] The meanings of the labels in the diagram are as follows:

[0021] 1. Base plate; 2. Fixed seat; 3. First limiting rod; 4. First moving block; 5. No. 1 clamping block; 6. Anti-slip pad; 7. Moving groove; 8. Sliding block; 9. Moving seat; 10. Rotating shaft; 11. Second limiting rod; 12. Second moving block; 13. No. 2 clamping block; 14. Mounting frame; 15. Drive motor; 16. Bidirectional lead screw; 17. Structural cavity; 18. Gear; 19. Adjusting groove; 20. Adjusting block; 21. Moving frame; 22. Limiting block; 23. Pressure gauge; 24. Electric actuator; 25. Dimension line; 26. Linkage rod; 27. Sliding hole. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Therefore, this utility model provides a device for testing the strength of the outer insulation layer of cables, see [link to relevant documentation]. Figures 1-6 As shown, it includes a base plate 1, on which a detection assembly is mounted. The detection assembly includes a fixed seat 2. The fixed seat 2 is fixedly connected to one end of the top of the base plate 1. First limiting rods 3 are symmetrically fixed to both sides of the fixed seat 2. First moving blocks 4 are provided on both sides of the fixed seat 2. The first moving blocks 4 are sleeved outside the cross-section of the first limiting rods 3. A clamping block 5 is fixedly connected to the top of each first moving block 4. Clamping grooves are opened on the opposite vertical surfaces of the clamping blocks 5, and anti-slip pads 6 are pasted inside the clamping grooves. A moving groove 7 is opened at the top of the base plate 1 away from the fixed seat 2. A sliding block 8 is provided inside the moving groove 7. A moving seat 9 is fixedly connected to the top of the sliding block 8. A rotating shaft 10 is rotatably mounted on the body of the moving seat 9 through a screw hole. One end of the rotating shaft 10 is connected to the base plate 1. When the rotating shaft 10 on the fixed seat 2 rotates, it can push the moving seat 9 and the sliding block 8 to move along the inside of the moving groove 7, thereby adjusting the working position between the fixed seat 2 and the anti-slip pad 6.

[0024] Second limiting rods 11 are symmetrically fixed to both sides of the movable base 9. Second moving blocks 12 are provided on both sides of the base body of the movable base 9. The second moving blocks 12 are fitted outside the cross-section of the second limiting rods 11. A second clamping block 13 is fixed to the top of each second moving block 12. Clamping grooves are formed on the opposite vertical structural surfaces of the second clamping blocks 13, and anti-slip pads 6 are adhered inside the clamping grooves. When the second moving blocks 12 move the second clamping blocks 13 closer together along the second limiting rods 11, the cable can be clamped and fixed.

[0025] A mounting bracket 14 is fixed to one side of the top of the base plate 1 near the fixed seat 2. A drive motor 15 is mounted on the side of the mounting bracket 14 away from the fixed seat 2. A bidirectional lead screw 16 is mounted on the output shaft end of the drive motor 15. A structural cavity 17 is opened inside the body of the fixed seat 2 near the movable seat 9. The rod of the bidirectional lead screw 16 passes through the opening space of the structural cavity 17 and extends to the outside. A gear 18 is fixedly sleeved on the outside of the rod section of the bidirectional lead screw 16 inside the structural cavity 17. The end of the rotating shaft 10 away from the movable seat 9 is inserted into the structural cavity 17 and is threaded. The gear 18 meshes with the threaded end of the rotating shaft 10. Threads are opened at both ends of the bidirectional lead screw 16, and the first movable blocks 4 on both sides are respectively sleeved on the ends of the bidirectional lead screw 16 through threaded holes. The drive motor 15 can provide driving force for the rotation of the bidirectional lead screw 16, thereby driving the rotation shaft 10 and the first movable blocks 4 to move, so as to clamp the cable end and move the working position of the movable seat 9 at the same time, so that the cable is in a taut state.

[0026] A linkage rod 26 is fixedly connected to the end face of the first moving block 4 near the moving base 9. A sliding hole 27 is opened inside the second moving block 12. The end of the linkage rod 26 passes through the sliding hole 27 and extends outward. Placement slots are opened on the top of both the fixed base 2 and the moving base 9. The vertical cross-sectional dimensions of the first clamping block 5 are the same as those of the second clamping block 13. When the first moving block 4 moves, it can drive the second moving block 12 to move simultaneously through the linkage rod 26. With the cooperation of the sliding hole 27, the two second moving blocks 12 can approach each other and simultaneously follow the moving base 9 away from the fixed base 2.

[0027] An adjustment groove 19 is provided on the top side of the base plate 1 away from the mounting bracket 14. An adjustment block 20 is provided inside the adjustment groove 19. A movable frame 21 is connected to the top of the adjustment block 20. A push hole is provided on the side of the movable frame 21 near the rotating shaft 10, and a limit block 22 is slidably provided inside the push hole. A cutting tool is installed on the side of the limit block 22 near the rotating shaft 10. A pressure gauge 23 is installed between the two sides of the movable frame 21. A drive power supply is provided inside the limit block 22. The drive power supply can cause the cutting tool to rotate and operate. The strength of the outer insulation layer of the cable is judged by the change of the value on the pressure gauge 23.

[0028] An electric actuator 24 is mounted on the top side of the base plate 1 via a fixing bracket. The pushing end of the electric actuator 24 is connected to the movable frame 21. A dimension line 25 is engraved on the top of the base plate 1 near the opening of the adjustment groove 19. The electric actuator 24 provides a pushing force for the movement of the movable frame 21.

[0029] During operation, thanks to the structural design of the detection component, the cable segment to be tested can be placed in the placement slots on the top of the fixed base 2 and the movable base 9. The drive motor 15 on the mounting bracket 14 is started, causing the bidirectional lead screw 16 to rotate. The first movable blocks 4 on both sides drive the first clamping blocks 5 on them to move closer together and clamp one end of the cable. Under the drive of the linkage rod 26, the second movable blocks 12 on both sides drive the second clamping blocks 13 on them to move closer together along the second limiting rod 11 and clamp the other end of the cable. Simultaneously, the bidirectional lead screw 16 drives the gear 18 inside the structural cavity 17 to rotate, causing the rotating shaft 10 to rotate accordingly. Under the limiting action of the movable slot 7 and the sliding block 8, the movable base 9 drives the second limiting rod 11, the second movable block 12, and the second clamping block 13 to move away from the fixed base 2. Short-distance movement ensures that the cable is tightened while being fixed, preventing the detection point from shifting due to cable slack during testing and guaranteeing the accuracy of the test results. Subsequently, the electric actuator 24 is activated, which pushes the moving frame 21 and the adjusting block 20 along the adjusting groove 19 towards the cable. Based on the thickness of the cable insulation layer and the value on the dimension line 25, the moving frame 21 and the cutting tool are moved to the appropriate position, causing the cutting tool to be in close contact with the cable insulation layer. The value on the pressure gauge 23 is observed at this time. Then, the electric actuator 24 pushes the moving frame 21 and the cutting tool towards the cable, and the cutting tool operates simultaneously. When the moving frame 21 moves the same distance as the insulation layer thickness, the change in the value on the pressure gauge 23 is observed throughout the process to determine the strength of the cable's outer insulation layer.

[0030] In summary, this effectively solves the problem that existing technologies, when fixing cables, may result in slack between cables, causing the detection position to shift and preventing the detection component from operating perpendicularly to the cable insulation layer, thus affecting the accuracy of the detection results.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present utility 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 utility, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the strength of the outer insulation layer of a cable, characterized in that: The system includes a base plate (1), on which a detection assembly is mounted. The detection assembly includes a fixed seat (2). The fixed seat (2) is fixedly connected to one top end of the base plate (1). First limiting rods (3) are symmetrically fixed to both sides of the fixed seat (2). First moving blocks (4) are provided on both sides of the fixed seat (2). The first moving blocks (4) are sleeved outside the cross section of the first limiting rods (3). A clamp is fixedly connected to the top of each first moving block (4). Block (5), the first clamping block (5) has clamping grooves on its opposite vertical surfaces, and anti-slip pads (6) are pasted inside the clamping grooves. The top of the base plate (1) is provided with a moving groove (7) at the end away from the fixed seat (2). A sliding block (8) is provided inside the moving groove (7). A moving seat (9) is fixed to the top of the sliding block (8). A rotating shaft (10) is rotatably installed on the body of the moving seat (9) through a screw hole. One end of the rotating shaft (10) is connected to the base plate (1).

2. The device for testing the strength of the outer insulation layer of a cable according to claim 1, characterized in that: The movable seat (9) is symmetrically fixed with second limiting rods (11) on both sides. The movable seat (9) is provided with second moving blocks (12) on both sides of the seat body. The second moving blocks (12) are sleeved outside the cross section of the second limiting rods (11). The top of each second moving block (12) is fixed with a second clamping block (13). The relative vertical structural surfaces of the second clamping blocks (13) are provided with clamping grooves, and anti-slip pads (6) are pasted inside the clamping grooves.

3. The device for testing the strength of the outer insulation layer of a cable according to claim 2, characterized in that: A mounting bracket (14) is fixed on one side of the top of the base plate (1) near the fixed seat (2). A drive motor (15) is mounted on the side of the mounting bracket (14) away from the fixed seat (2). A bidirectional lead screw (16) is mounted on the output shaft end of the drive motor (15). A structural cavity (17) is opened at one end of the body of the fixed seat (2) near the moving seat (9). The rod of the bidirectional lead screw (16) passes through the opening space of the structural cavity (17) and extends to the outside. A gear (18) is fixedly sleeved on the outside of the rod section of the bidirectional lead screw (16) inside the structural cavity (17). The end of the rotating shaft (10) away from the moving seat (9) is inserted into the structural cavity (17) and has threads. The gear (18) meshes with the threaded end of the rotating shaft (10). Threads are opened at both ends of the bidirectional lead screw (16), and the first moving blocks (4) on both sides are respectively sleeved on the ends of the bidirectional lead screw (16) through screw holes.

4. The device for detecting the strength of the outer insulation layer of a cable according to claim 3, characterized in that: The first moving block (4) is fixedly connected to a linkage rod (26) on the end face near the moving seat (9). The second moving block (12) has a sliding hole (27) inside. The end of the linkage rod (26) passes through the sliding hole (27) and extends out to the outside. The top of the fixed seat (2) and the moving seat (9) are both provided with placement grooves. The vertical cross-sectional dimensions of the first clamping block (5) are the same as those of the second clamping block (13).

5. The device for testing the strength of the outer insulation layer of a cable according to claim 4, characterized in that: An adjustment groove (19) is provided on the top side of the base plate (1) away from the mounting bracket (14). An adjustment block (20) is provided inside the adjustment groove (19). A movable frame (21) is connected to the top of the adjustment block (20). A push hole is provided on the side of the movable frame (21) near the rotating shaft (10). A limit block (22) is slidably provided inside the push hole. A cutting tool is installed on the side of the limit block (22) near the rotating shaft (10). A pressure gauge (23) is installed between the two sides of the movable frame (21).

6. The device for detecting the strength of the outer insulation layer of a cable according to claim 5, characterized in that: An electric push rod (24) is mounted on the top side of the base plate (1) via a fixing frame. The pushing end of the electric push rod (24) is connected to the moving frame (21). A dimension line (25) is engraved on the top of the base plate (1) near the opening of the adjustment groove (19).

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