A device for detecting heat shrinkability of a cable insulation layer

Abstract

The utility model relates to cable insulation layer heat shrinkability detection technical field, specifically, a kind of cable insulation layer heat shrinkability detection device, it includes detection box, detection box inside is enclosed with detection cavity, the inside installation of detection cavity has material taking subassembly, material taking subassembly include has pull groove, the inside wall bottom end face of detection cavity is symmetrically provided with pull groove, the inside of pull groove is provided with pull block, the top of pull block is fixedly connected with support frame, support frame top structure face is symmetrically provided with static slot near the position of both sides, static slot inside is provided with lifting rod, the section outside of lifting rod is fixed with clamping block, by the cooperation of material taking subassembly, without waiting for long cooling time, the cable insulation layer of higher temperature can be directly taken out, simultaneously prevent the adhesion of melted insulation layer on detection structure.

Description

Technical Field

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

[0002] After the cable is manufactured, it needs to undergo a number of tests to ensure that it meets the requirements for production and use. Among these tests, monitoring the shrinkage of the cable insulation layer is essential.

[0003] A search revealed CN219830918U, which discloses a heat shrinkage performance testing device. The device includes a testing platform with a testing cavity at its top and a placement platform in the middle. A support block is connected to one side of the top of the testing platform, and a fixing plate is fixedly connected to the top of the support block. A hydraulic device is located on the side of the fixing plate facing the testing cavity, and an air blowing device is located on the other side of the fixing plate. The air blowing pipe of the air blowing device is connected to the hydraulic device. Multiple heating rods are located at the bottom of the testing cavity. This device addresses the current technical problem of high cost and low efficiency in testing plastic bottles, where different aspects, such as pressure resistance and air tightness, require different equipment for testing and switching between different tests is necessary.

[0004] The aforementioned patent still has shortcomings in practical use. During the operation of the existing technology, the surface of the cable insulation layer is still at a high temperature after the test is completed. If the operation is not done properly during the material handling process, it is easy to burn the operator. In addition, in order to obtain the upper limit of the monitoring data, the cable insulation layer will melt and fall off at high temperature. The fallen insulation layer will stick to the test structure, and a lot of time needs to be spent cleaning it later.

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

[0006] To address the issues raised in the background art, such as the cable insulation layer remaining at a high temperature after testing, the risk of burns to operators during material handling due to improper operation, and the possibility of the cable insulation layer melting and falling off at high temperatures to obtain the upper limit of monitoring data, resulting in the insulation layer adhering to the testing structure and requiring significant time for cleaning, this invention provides a cable insulation layer thermal shrinkage testing device. The device includes a testing chamber enclosing a testing cavity. A material handling component is installed inside the testing cavity, and the material handling component includes a pulling groove. The bottom end face of the inner wall of the testing cavity has symmetrically arranged pulling grooves, and a pulling block is disposed inside each pulling groove. A support frame is fixed to the top of each pulling block. A stationary groove is symmetrically arranged near both sides on the top structural surface of the support frame. A lifting rod is disposed inside the stationary groove, and a clamping block is fixed to the outside of the cross-section of the lifting rod.

[0007] As a further improvement to this technical solution, structural cavities are symmetrically formed on the top structural surface of the support frame near both ends. The ends of the stationary grooves are connected to the structural cavities. The bottom of the structural cavities is inserted into the vertical plates at both ends of the support frame body. Sliding grooves are formed at the bottom of the structural cavities. Sliding blocks are symmetrically arranged inside each sliding groove. A telescopic rod is installed on the top of the sliding block. A moving block is connected to the top of the telescopic end of the telescopic rod. The end of each lifting rod is connected to the moving block.

[0008] As a further improvement to this technical solution, sliding holes are provided on the opposite surfaces of the two moving blocks at the same end, and the sliding holes penetrate the block body. A limit rod is installed inside the sliding hole of the moving block. A bracket is symmetrically provided on the top of the support frame above the structural cavity. The horizontal projection of the limit rod is located inside the bracket. One end of the limit rod extends outward through the opening space of the bracket and is equipped with a handle.

[0009] As a further improvement to this technical solution, a fixed seat is fixedly connected to the upper part of each of the structural cavities. A connecting rod is rotatably mounted on the vertical surface of the fixed seat via a pin. The top end of the connecting rod is rotatably connected to a moving block on the same side via a pin.

[0010] As a further improvement to this technical solution, when the telescopic rod is not stretched, the limiting rod is stationary inside the slot, the distance between the moving blocks at the same end is the farthest, and when the two moving blocks at the same end are closest to each other, the clamping surfaces of the two clamping blocks are in contact.

[0011] As a further improvement to this technical solution, a receiving groove is provided on the top end face of the support frame, and a replaceable gasket is placed inside the receiving groove.

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

[0013] 1. In this cable insulation thermal shrinkage testing device, the material handling component can directly remove the high-temperature cable insulation without waiting for a long cooling time, thus avoiding burns to the operator due to direct contact. At the same time, it can receive the molten insulation that falls during the monitoring process, preventing the molten insulation from adhering to the testing structure. 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 schematic diagram of the material handling component of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the telescopic pole when it is not in use.

[0017] Figure 4 This is a schematic cross-sectional view of the support frame of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the movable blocks in this utility model moving closer to each other.

[0019] The meanings of the labels in the diagram are as follows:

[0020] 1. Inspection box; 2. Inspection cavity; 3. Pulling groove; 4. Pulling block; 5. Support frame; 6. Stationary groove; 7. Structural cavity; 8. Sliding groove; 9. Support groove; 10. Lifting rod; 11. Clamping block; 12. Limiting rod; 13. Moving block; 14. Sliding block; 15. Telescopic rod; 16. Fixed base; 17. Connecting rod; 18. Handle; 19. Receiving groove. Detailed Implementation

[0021] 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.

[0022] Therefore, this utility model provides a device for testing the thermal shrinkage of cable insulation layers. (See also...) Figures 1-5As shown, it includes a detection box 1, which encloses a detection cavity 2. A material handling assembly is installed inside the detection cavity 2, and the material handling assembly includes a pulling groove 3. The pulling groove 3 is symmetrically formed on the bottom end face of the inner wall of the detection cavity 2. A pulling block 4 is disposed inside the pulling groove 3, and a support frame 5 is fixedly connected to the top of the pulling block 4. A stationary groove 6 is symmetrically formed on the top structural surface of the support frame 5 near both sides. A lifting rod 10 is disposed inside the stationary groove 6, and a clamping block 11 is fixed to the outside of the cross-section of the lifting rod 10. A monitoring device is installed inside the detection box 1 to fix the detection position of the cable segment. When the lifting rod 10 is stationary inside the stationary groove 6, the top end face of the clamping block 11 and the top end face of the support frame 5 are located on the same horizontal plane. By applying a pushing or pulling force to the support frame 5, the pulling block 4 moves horizontally along the inside of the pulling groove 3.

[0023] Structural cavities 7 are symmetrically formed on the top structural surface of the support frame 5 near both ends. The ends of the stationary grooves 6 are connected to the structural cavities 7. The bottom of the structural cavities 7 is inserted into the vertical plates at both ends of the support frame 5. Sliding grooves 8 are formed at the bottom of the structural cavities 7. Sliding blocks 14 are symmetrically arranged inside each sliding groove 8. Telescopic rods 15 are installed on the top of the sliding blocks 14. The top of the telescopic end of the telescopic rods 15 is connected to a moving block 13. The end of each lifting rod 10 is connected to the moving block 13. The telescopic rods 15 can also achieve a limiting effect while being extended, ensuring that the movement of the moving blocks 13 is always in the same vertical plane. When the sliding blocks 14 inside the sliding grooves 8 move towards each other, the telescopic rods 15 on the top of the sliding blocks 14 drive the moving blocks 13 and the lifting rods 10 to move towards each other.

[0024] Sliding holes are provided on the opposite surfaces of the two moving blocks 13 at the same end, and the sliding holes penetrate the block body of the moving blocks 13. A limit rod 12 is installed inside the sliding hole of the moving block 13. A bracket 9 is symmetrically provided on the top of the support frame 5 above the structural cavity 7. The horizontal projection of the limit rod 12 is located inside the bracket 9. One end of the limit rod 12 extends outward through the opening space of the bracket 9 and is equipped with a handle 18.

[0025] Each structural cavity 7 has a fixed seat 16 fixedly attached to its upper part. A connecting rod 17 is rotatably mounted on the vertical surface of the fixed seat 16 via a pin. The top end of the connecting rod 17 is rotatably connected to a movable block 13 on the same side via a pin. During the upward movement of the limiting rod 12, under the limiting action of the connecting rod 17, the two movable blocks 13 on the limiting rod 12 move horizontally towards each other simultaneously during the upward movement.

[0026] When the telescopic rod 15 is not stretched, the limiting rod 12 is stationary inside the bracket 9. The distance between the moving blocks 13 at the same end is the farthest. When the two moving blocks 13 at the same end are closest to each other, the clamping surfaces of the two clamping blocks 11 are in contact.

[0027] A receiving groove 19 is provided on the top end face of the support frame 5, and a replaceable gasket is placed inside the receiving groove 19. During the heating and testing of the cable insulation layer, the molten insulation layer will fall onto the replaceable gasket inside the receiving groove 19. Afterwards, no amount of time is required for cleaning; only the gasket needs to be replaced.

[0028] During operation, thanks to the structural design of the material handling assembly, after heating and testing the cable insulation layer, the cable segment that still retains residual heat needs to be removed. First, an upward lifting force is applied to the handle 18, causing the handle 18 to move the limiting rod 12 and the moving block 13 upward. At the same time, the limiting rod 12 pulls the telescopic rod 15 to extend. Since the position of the fixed seat 16 remains unchanged, the connecting rod 17 rotates around the connecting pin on the fixed seat 16, causing the two moving blocks 13 at the same end to rise and move towards each other along the limiting rod 12. When the limiting rod 12 rises to its highest position, the clamping blocks 11 on both sides clamp the cable segment that still retains residual heat. Then, the fixing effect of the testing device on the cable is released, and a pulling force is applied to the support frame 5, causing the support frame 5 and the pulling block 4 to move to the outside along the pulling groove 3.

[0029] In summary, this effectively solves the problems of existing methods where the surface of the cable insulation layer remains at a high temperature after testing, which can easily burn operators if not handled properly during material handling. Furthermore, in order to obtain the upper limit of the monitoring data, the cable insulation layer may melt and fall off at high temperatures, and the fallen insulation layer will adhere to the testing structure, requiring a lot of time to clean it up later.

[0030] 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.

[0031] 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 thermal shrinkage of cable insulation, comprising a testing chamber (1) and a testing cavity (2) enclosed inside the testing chamber (1), characterized in that: The detection chamber (2) is equipped with a material taking component, which includes a pulling groove (3). The bottom end face of the inner wall of the detection chamber (2) is symmetrically provided with the pulling groove (3). The pulling groove (3) is provided with a pulling block (4). The top of the pulling block (4) is fixedly connected with a support frame (5). The top structural surface of the support frame (5) is symmetrically provided with a stationary groove (6) near both sides. The stationary groove (6) is provided with a lifting rod (10). The outside of the cross section of the lifting rod (10) is fixed with a clamping block (11).

2. The cable insulation thermal shrinkage testing device according to claim 1, characterized in that: The support frame (5) has symmetrically arranged structural cavities (7) on the top structural surface near both ends. The end of the stationary groove (6) is connected to the structural cavity (7). The bottom of the structural cavity (7) is inserted into the vertical plates at both ends of the support frame (5). The bottom of the structural cavity (7) has a sliding groove (8). Each sliding groove (8) has a sliding block (14) symmetrically arranged inside. The top of the sliding block (14) is equipped with a telescopic rod (15). The top of the telescopic end of the telescopic rod (15) is connected to a moving block (13). The end of each lifting rod (10) is connected to the moving block (13).

3. The cable insulation thermal shrinkage testing device according to claim 2, characterized in that: Sliding holes are provided on the opposite surfaces of the two moving blocks (13) at the same end, and the sliding holes penetrate the block body of the moving block (13). A limiting rod (12) is installed inside the sliding hole of the moving block (13). A bracket (9) is symmetrically provided on the top of the support frame (5) above the structural cavity (7). The horizontal projection of the limiting rod (12) is located inside the bracket (9). One end of the limiting rod (12) extends out of the outside through the opening space of the bracket (9) and is equipped with a handle (18).

4. The cable insulation thermal shrinkage testing device according to claim 3, characterized in that: Each of the structural cavities (7) is fixedly connected to a fixed seat (16) at a position slightly above the interior. A connecting rod (17) is rotatably mounted on the vertical surface of the fixed seat (16) via a pin. The top end of the connecting rod (17) is rotatably connected to the moving block (13) on the same side via a pin.

5. The cable insulation thermal shrinkage testing device according to claim 4, characterized in that: When the telescopic rod (15) is not stretched, the limiting rod (12) is stationary inside the slot (9), the distance between the moving blocks (13) at the same end is the farthest, and when the two moving blocks (13) at the same end are closest to each other, the clamping surfaces of the two clamping blocks (11) are in contact.

6. The cable insulation thermal shrinkage testing device according to claim 5, characterized in that: The support frame (5) has a receiving groove (19) on its top end face, and a replaceable gasket is placed inside the receiving groove (19).

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