Intelligent explosion-proof device for high-low voltage cable joint

Abstract

The utility model discloses a kind of high-low voltage cable joint intelligent explosion-proof devices, belong to joint explosion-proof technical field, including a pair of shell, a pair of roller shaft, top axle and locking assembly, a pair of shell are detachably connected, cable body passes through shell and mutually adheres with it, roller shaft is rotatably connected with shell inner wall, this high-low voltage cable joint intelligent explosion-proof device, by the roller shaft and top axle being set, cable body is bent and is arranged in shell, gradually straightens when cable body is stretched by force, and top axle is moved in shell, the stroke generated by cable body being stretched can be consumed, play protection effect, prevent joint part being pulled off, and with cable being straightened, triggering locking assembly fixes the other end of cable body, further protect joint part, to reduce short circuit and deflagration risk, solve the existing high-low voltage cable joint explosion-proof device tensile property, easily cause electrical fault, even the case of explosion.

Description

Technical Field

[0001] This utility model relates to the technical field of intelligent explosion-proof devices for high and low voltage cable joints, and specifically to an intelligent explosion-proof device for high and low voltage cable joints. Background Technology

[0002] In modern power systems, high- and low-voltage cables serve as crucial carriers of electrical energy transmission and are widely used in various fields. Cable joints, as weak points in cable lines, are susceptible to failure and even explosion due to a variety of factors, including electrical stress, mechanical stress, environmental factors, and construction quality. An explosion of a high- or low-voltage cable joint can not only disrupt power supply and affect normal production and daily life but may also trigger a fire, posing a serious threat to life and property. Therefore, the application of efficient and reliable explosion-proof devices for high- and low-voltage cable joints is of paramount importance for ensuring the safe and stable operation of power systems.

[0003] Currently, most high and low voltage cable joints use rigid explosion-proof boxes. The principle is to wrap the joint area with two spliced ​​shells, which can improve the sealing performance, reduce the risk of short circuit, and also provide protection in the event of a short circuit, preventing the leakage of electrical sparks.

[0004] However, existing explosion-proof devices for high and low voltage cable joints have poor tensile strength. During cable laying, installation, and subsequent operation, cable joints may be subjected to various external forces. For example, during construction, cables may be accidentally dug or struck; during road construction, building construction, and other activities, cables may be subjected to external forces such as compression and tension. These external forces can damage the insulation layer of the cable joint, loosen the conductor connection, and thus cause electrical faults or even explosions. Utility Model Content

[0005] The purpose of this invention is to provide an intelligent explosion-proof device for high and low voltage cable joints, which can improve the tensile strength of the explosion-proof device for high and low voltage cable joints, prevent the joint from being directly overloaded, and improve explosion-proof safety.

[0006] To achieve this objective, the present invention adopts the following technical solution: A smart explosion-proof device for high and low voltage cable joints is provided, comprising a pair of housings, a pair of rollers, a top shaft, and a locking assembly. The pair of housings are detachably connected to each other. The cable body passes through the housings and is attached to them. The rollers are rotatably connected to the inner wall of the housings and abut against one side of the cable body. The top shaft is slidably installed in the housings and is located between the two rollers. The top shaft abuts against the other side of the cable body. The locking assembly is installed in the housings and is used to fix one end of the cable body.

[0007] Furthermore, it also includes a U-shaped plate, a telescopic rod, and a first spring. The inner wall of the U-shaped plate is rotatably connected to the top shaft, one side of the telescopic rod is fixedly connected to the inner wall of the housing, the telescopic end of the telescopic rod is fixedly connected to the U-shaped plate, and the first spring is sleeved around the telescopic rod. The two ends of the first spring are fixedly connected to the inner wall of the housing and the U-shaped plate, respectively.

[0008] Furthermore, the locking assembly is located at one end of the housing. The locking assembly includes a slide, a pair of clamps and a tension spring. The bottom of the slide is fixedly connected to the inner wall of the housing, and the bottom of the clamps is slidably connected to the inner wall of the slide. The two clamps are symmetrically arranged on both sides of the cable body and fit against each other. The two ends of the tension spring are fixedly connected to the two clamps respectively.

[0009] Furthermore, the locking assembly also includes a pair of locking blocks and multiple torsion springs. The two locking blocks are respectively installed on the bottom of the two clamping plates. One end of the clamping plate has a slot, and the locking blocks are rotatably connected to the inner wall of the slot. The torsion springs are sleeved on the outer periphery of the protruding shaft on the locking blocks. The two ends of the torsion springs are fixedly connected to the locking blocks and the inner wall of the slot, respectively. One end of the slide has a pair of locking slots, and the inner wall of the locking slots abuts against the locking blocks.

[0010] Furthermore, the locking assembly also includes a trigger plate, a second spring, a rotating shaft, and a roller. The trigger plate is slidably connected to the bottom wall of the housing. A pair of insert rods are fixedly connected to one end of the trigger plate. The insert rods are engaged with the slots and abut against one end of the insert rods and the locking block. The rotating shaft is fixedly connected to one side of the U-shaped plate. The roller is rotatably connected to the outer periphery of the rotating shaft. One side of the roller abuts against the inclined surface of the trigger plate. The two ends of the second spring are fixedly connected to the slide and the trigger plate, respectively.

[0011] Furthermore, it also includes a protective sleeve, which consists of a sleeve body and a sleeve cover. The sleeve body and the sleeve cover are threaded together, and both the sleeve body and the sleeve cover are slidably connected to the outer periphery of the cable body.

[0012] Furthermore, the two outer shells can be fitted together to form a hollow box-like structure, which also includes multiple bolts and multiple nuts. The bolts pass through the four corners of the outer shell and are threaded into the nuts.

[0013] Furthermore, it also includes a pair of clamps located at the other end of the housing. The clamps are multi-layered toothed structures with grooves on the top. The inner walls of the grooves are in contact with the cable body. The two clamps are fixedly connected to the inner walls of the two housings respectively. The two clamps are staggered and interlocked.

[0014] The beneficial effects of this utility model are as follows: By setting up a housing, roller, and top shaft, when the cable body is stretched, one end is fixed inside the housing, and the other end is pulled out of the housing, so that the cable body is pulled and pushes the top shaft to move inside the housing. This can consume the stroke generated by the stretching of the cable body, play a protective role, and prevent the joint from being pulled off. When the cable is straightened, the locking component is triggered to fix the other end of the cable body, further protecting the joint and reducing the risk of short circuit and explosion. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the outer shell structure of this utility model; Figure 3 This is a schematic diagram of the locking component structure of this utility model. Figure 1 ; Figure 4 This is a schematic diagram of the locking component structure of this utility model. Figure 2 ; Figure 5 This is an exploded view of the protective sleeve structure of this utility model; Figure 6 This is a cross-sectional view of the slide structure of this utility model.

[0017] In the picture: 1. Outer shell; 10. Roller shaft; 11. Top shaft; 12. Cable body; 13. U-shaped plate; 14. Telescopic rod; 15. First spring; 16. Bolt; 17. Nut; 18. Clamping plate; 180. Groove; 2. Locking assembly; 20. Slide; 200. Slot; 21. Clamping plate; 210. Hollow slot; 22. Tension spring; 23. Locking block; 24. Torsion spring; 25. Trigger plate; 26. Insert rod; 27. Second spring; 28. Rotating shaft; 29. ​​Roller; 3. Protective cover; 30. Cover body; 31. Cover cap. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0020] Reference Figures 1 to 6 The intelligent explosion-proof device for high and low voltage cable joints shown includes a pair of housings 1, a pair of rollers 10, a top shaft 11, and a locking assembly 2. The pair of housings 1 are detachably connected to each other. The cable body 12 passes through the housings 1 and is attached to them. The rollers 10 are rotatably connected to the inner wall of the housings 1. The rollers 10 and the cable body 12 abut against each other on one side. The top shaft 11 is slidably installed in the housing. The top shaft 11 is located between the two rollers 10. The top shaft 11 and the cable body 12 abut against each other on the other side. The locking assembly 2 is installed in the housing and is used to fix one end of the cable body 12.

[0021] After the cable body 12 is spliced, the splice is placed inside the housing. One end of the cable body 12 is fixed inside the housing, and the other end is attached to one side of the roller 10. At the same time, the cable body 12 is bent and wrapped around the outside of the top shaft 11. Then, the two housings are connected to each other, and the housing protects the splice. When the cable body 12 is stretched, one end is fixed inside the housing, and the other end is pulled out of the housing. This stretching of the cable body 12 pushes the top shaft 11 to move inside the housing, which can consume the stroke generated by the stretching of the cable body 12, thus providing protection and preventing the splice from being pulled off. When the cable is straightened, the locking component 2 is triggered to fix the other end of the cable body 12, further protecting the splice and reducing the risk of short circuit and explosion.

[0022] like Figures 2 to 4 As shown, it also includes a U-shaped plate 13, a telescopic rod 14 and a first spring 15. The inner wall of the U-shaped plate 13 is rotatably connected to the top shaft 11. One side of the telescopic rod 14 is fixedly connected to the inner wall of the housing. The telescopic end of the telescopic rod 14 is fixedly connected to the U-shaped plate 13. The first spring 15 is sleeved on the periphery of the telescopic rod 14. Both ends of the first spring 15 are fixedly connected to the inner wall of the housing and the U-shaped plate 13, respectively.

[0023] When the cable body 12 is stretched, it pushes the top shaft 11 to move. At the same time, the top shaft 11 receives the friction force of the cable body 12 and rotates in the U-shaped plate 13. The U-shaped plate 13 squeezes the first spring 15 to compress it. The telescopic rod 14 shortens synchronously with the compression of the first spring 15 to stabilize the direction of the deformation of the first spring 15. After the cable body 12 is subjected to force, the first spring 15 rebounds and pushes the top shaft 11 to reset.

[0024] like Figure 3 and Figure 5As shown, the locking component 2 is located at one end of the housing. The locking component 2 includes a slide 20, a pair of clamps 21 and a tension spring 22. The bottom of the slide 20 is fixedly connected to the inner wall of the housing, and the bottom of the clamps 21 is slidably connected to the inner wall of the slide 20. The two clamps 21 are symmetrically arranged on both sides of the cable body 12 and are in contact with each other. The two ends of the tension spring 22 are fixedly connected to the two clamps 21 respectively.

[0025] The locking assembly 2 also includes a pair of locking blocks 23 and multiple torsion springs 24. The two locking blocks 23 are respectively installed on the bottom of the two clamping plates 21. One end of the clamping plate 21 has a slot 210. The locking blocks 23 are rotatably connected to the inner wall of the slot 210. The torsion springs 24 are sleeved on the outer periphery of the convex shaft on the locking blocks 23. The two ends of the torsion springs 24 are fixedly connected to the locking blocks 23 and the inner wall of the slot 210, respectively. One end of the slide block 20 has a pair of locking slots 200. The inner wall of the locking slots 200 abuts against the locking blocks 23.

[0026] The locking assembly 2 also includes a trigger plate 25, a second spring 27, a rotating shaft 28, and a roller 29. The trigger plate 25 is slidably connected to the bottom wall of the housing. A pair of insert rods 26 are fixedly connected to one end of the trigger plate 25. The insert rods 26 are inserted into the slot 200 and abut against one end of the insert rods 26 and the locking block 23. The rotating shaft 28 is fixedly connected to one side of the U-shaped plate 13. The roller 29 is rotatably connected to the periphery of the rotating shaft 28. One side of the roller 29 abuts against the inclined surface of the trigger plate 25. The two ends of the second spring 27 are fixedly connected to the slide 20 and the trigger plate 25, respectively.

[0027] When the U-shaped plate 13 is pressed and moved by the cable body 12, it drives the rotating shaft 28 and the roller 29 to move synchronously. The roller 29 contacts the inclined surface of the trigger plate 25. As the roller 29 continues to move, it rotates around the rotating shaft 28 to reduce friction and push the trigger plate 25 to move. The second spring 27 is compressed. When the cable body 12 is straightened, the insert rod 26 on the trigger plate 25 is inserted into the slot 200 and pushes the block 23 out of the slot 200. One end of the block 23 is compressed and rotates around the convex shaft on it. The torsion spring 24 is twisted. As the block 23 leaves the slot 200, the tension spring 22 in the stretched state rebounds instantly, causing the two clamping plates 21 to slide along the slide block 20 and move closer to each other, thereby clamping and fixing the other end of the cable body 12. This fixes both ends of the joint, preventing the tensile force from being further transmitted to the joint and causing a short circuit, thus reducing the risk of deflagration.

[0028] After the tensile force on the cable body 12 is removed, the U-shaped plate 13 resets, causing the roller 29 to disengage from the trigger plate 25. At the same time, the second spring 27 rebounds and pushes the trigger plate 25 to reset, and the insertion rod 26 disengages from the slot 200. At this time, the housing needs to be opened to inspect the cable body 12. If there is no damage, the two clamping plates 21 are pulled to reset. As the empty slot 210 aligns with the slot 200, the torsion spring 24 rebounds and drives the locking block 23 to rotate and engage with the slot 200, completing the reset.

[0029] like Figure 4 As shown, it also includes a protective sleeve 3, which includes a sleeve body 30 and a sleeve cover 31. The sleeve body 30 and the sleeve cover 31 are threaded together, and both the sleeve body 30 and the sleeve cover 31 are slidably connected to the periphery of the cable body 12.

[0030] Before connecting the two cable bodies 12, they are passed through the sleeve 30 and the cover 31 respectively, then the joint is made. Then the sleeve 30 and the cover 31 are moved to place the joint inside the protective sleeve 3. Then the sleeve 30 and the cover 31 are threaded together to further protect against moisture.

[0031] like Figures 2 to 4 As shown, the two outer shells 1 can be fitted together to form a hollow box-shaped structure, and also include multiple bolts 16 and multiple nuts 17. The multiple bolts 16 pass through the four corners of the outer shell 1 and are threadedly connected to the nuts 17.

[0032] It also includes a pair of clamping plates 18, which are located at the other end of the housing. The clamping plates 18 have a multi-layer toothed structure with a groove 180 on the top. The inner wall of the groove 180 is in contact with the cable body 12. The two clamping plates 18 are fixedly connected to the inner walls of the two outer shells 1 respectively. The two clamping plates 18 are staggered and interlocked.

[0033] When assembling the housing, the cable body 12 is passed through one of the housings and the protective sleeve 3 is placed inside it, keeping both ends of the cable body 12 taut. Then, the other housing is flipped over and fitted together with the first housing. At this time, the two clamping plates 18 are interlocked and fitted together with the outer periphery of one end of the cable body 12, thereby fixing it by friction. Then, the bolts 16 are passed through the four corners of the housing and threadedly connected to the nuts 17 to complete the assembly and provide protection for the joint of the cable body 12.

[0034] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.

Claims

1. An intelligent explosion-proof device for high and low voltage cable joints, characterized in that, It includes a pair of housings (1), a pair of rollers (10), a top shaft (11) and a locking assembly (2). The pair of housings (1) are detachably connected to each other. The cable body (12) passes through the housing (1) and is attached to it. The rollers (10) are rotatably connected to the inner wall of the housing (1). The rollers (10) and the cable body (12) abut against each other on one side. The top shaft (11) is slidably installed in the housing. The top shaft (11) is located between the two rollers (10). The top shaft (11) and the cable body (12) abut against each other on the other side. The locking assembly (2) is installed in the housing and is used to fix one end of the cable body (12).

2. The intelligent explosion-proof device for high and low voltage cable joints according to claim 1, characterized in that, It also includes a U-shaped plate (13), a telescopic rod (14) and a first spring (15). The inner wall of the U-shaped plate (13) is rotatably connected to the top shaft (11). One side of the telescopic rod (14) is fixedly connected to the inner wall of the housing. The telescopic end of the telescopic rod (14) is fixedly connected to the U-shaped plate (13). The first spring (15) is sleeved on the periphery of the telescopic rod (14). The two ends of the first spring (15) are fixedly connected to the inner wall of the housing and the U-shaped plate (13) respectively.

3. The intelligent explosion-proof device for high and low voltage cable joints according to claim 2, characterized in that, The locking assembly (2) is located at one end of the housing. The locking assembly (2) includes a slide (20), a pair of clamps (21) and a tension spring (22). The bottom of the slide (20) is fixedly connected to the inner wall of the housing. The bottom of the clamps (21) is slidably connected to the inner wall of the slide (20). The two clamps (21) are symmetrically arranged on both sides of the cable body (12) and fit together with the cable body (12). The two ends of the tension spring (22) are fixedly connected to the two clamps (21) respectively.

4. The intelligent explosion-proof device for high and low voltage cable joints according to claim 3, characterized in that, The locking assembly (2) also includes a pair of locking blocks (23) and multiple torsion springs (24). The two locking blocks (23) are respectively installed on the bottom of the two clamping plates (21). One end of the clamping plate (21) is provided with a slot (210). The locking blocks (23) are rotatably connected to the inner wall of the slot (210). The torsion springs (24) are sleeved on the outer periphery of the convex shaft on the locking blocks (23). The two ends of the torsion springs (24) are respectively fixedly connected to the inner wall of the locking blocks (23) and the slot (210). One end of the slide (20) is provided with a pair of locking slots (200). The inner wall of the locking slots (200) abuts against the locking blocks (23).

5. The intelligent explosion-proof device for high and low voltage cable joints according to claim 4, characterized in that, The locking assembly (2) also includes a trigger plate (25), a second spring (27), a rotating shaft (28), and a roller (29). The trigger plate (25) is slidably connected to the bottom wall of the housing. A pair of insert rods (26) are fixedly connected to one end of the trigger plate (25). The insert rods (26) are inserted into the slot (200). The insert rods (26) and the end of the block (23) abut against each other. The rotating shaft (28) is fixedly connected to one side of the U-shaped plate (13). The roller (29) is rotatably connected to the outer periphery of the rotating shaft (28). One side of the roller (29) abuts against the inclined surface of the trigger plate (25). The two ends of the second spring (27) are fixedly connected to the slide (20) and the trigger plate (25) respectively.

6. The intelligent explosion-proof device for high and low voltage cable joints according to claim 1, characterized in that, It also includes a protective sleeve (3), which includes a sleeve body (30) and a sleeve cover (31). The sleeve body (30) and the sleeve cover (31) are threaded together, and both the sleeve body (30) and the sleeve cover (31) are slidably connected to the periphery of the cable body (12).

7. The intelligent explosion-proof device for high and low voltage cable joints according to claim 1, characterized in that, The two outer shells (1) fit together to form a hollow box-shaped structure, and also include multiple bolts (16) and multiple nuts (17). The multiple bolts (16) pass through the four corners of the outer shells (1) and are threaded to the nuts (17).

8. The intelligent explosion-proof device for high and low voltage cable joints according to claim 7, characterized in that, It also includes a pair of card plates (18), which are located at the other end of the housing. The card plates (18) are multi-layer toothed structures with grooves (180) on the top. The inner wall of the grooves (180) is in contact with the cable body (12). The two card plates (18) are fixedly connected to the inner walls of the two outer shells (1) respectively. The two card plates (18) are staggered and interlocked.

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