A modular assembly lead protector for electrical cables

Abstract

The application discloses a module assembled lead wire protection device for electrical cable and belongs to the technical field of cable protection. The device comprises a wire rectifying sleeve and a plurality of twist releasing wire protection sleeves. The end of the wire rectifying sleeve is connected with a bending detection fixing ring. The bending detection fixing ring is provided with a bending detection assembly for detecting the bending direction of the wound cable. The wire rectifying sleeve is provided with a direction adjusting ring. The inner wall of the direction adjusting ring is connected with two symmetrical wire holding arc plates. The intermittent swing cooperation of the electromagnetic seat and the swing magnetic seat and the buffer pad can realize the micro vibration of the cable to release the internal stress, avoid the superposition of the bending and the twisting of the cable, and release the layered twisting force by the revolution release disc and the rotation release ring in the twist releasing wire protection sleeve, so that the local stress concentration is avoided to cause the damage of the insulation layer. The mechanism of the shared release is adopted in the twisting transmission process, and finally the residual twisting force is completely eliminated at the end of the cable.

Description

Technical Field

[0001] This invention relates to the field of cable protection technology, and in particular to a modular assembly lead wire protection device for electrical cables. Background Technology

[0002] An electrical cable is a device for transmitting electrical energy or signals, a system of wires used to transmit electrical energy or signals from one point to another.

[0003] After production, cables are usually wound up for easy storage and transportation. When laying cables, construction workers gradually unwrap them. However, the long period of winding creates bending stress in the cable. When the unwound cable is laid directly in the trench, this stress is gradually released, causing friction with the coarse sand backfilling the trench, damaging the cable's insulation. Furthermore, when encountering curved sections during laying, workers often align the curved surface of the cable winding with the curved trench, which can easily cause torsion on the cable surface. This results in both bending and torsional stresses on that section of cable. This stress superposition accelerates material fatigue, affecting the cable's normal operation. Moreover, the release of torsion leads to a continuous accumulation of torsion until the cable ends are fully released, causing further damage. Therefore, a modular assembly-type lead wire protection device for electrical cables is proposed. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a modular assembly lead wire protection device for electrical cables.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A modular assembled lead wire protection device for electrical cables includes a wire-straightening sleeve and multiple torsion-relieving lead wire protection sleeves. The end of the wire-straightening sleeve is connected to a bending-measuring retaining ring. The bending-measuring retaining ring is provided with a bending-measuring component for detecting the bending direction of the wound cable. The wire-straightening sleeve is provided with an adjusting ring. The inner sidewall of the adjusting ring is connected to two symmetrically arranged wire-holding arc plates. One side of the wire-holding arc plates is provided with a swinging component for releasing the bending stress of the cable.

[0007] Multiple release-torsion cable sleeves are connected by multiple curved corrugated sleeves. The inner sidewall of each release-torsion cable sleeve is connected to two symmetrically arranged limiting arc-shaped sliding grooves. The limiting arc-shaped sliding grooves are connected to release components for gradually releasing the superimposed torsion of the cable. The release-torsion cable sleeves located at the ends are connected to mudguards, and traction components are provided on the mudguards.

[0008] Preferably, the cable straightening sleeve is fixedly connected to the torsion-relieving cable protection sleeve via an adapter frame, and the torsion-relieving cable protection sleeve and the curved corrugated sleeve are detachably assembled.

[0009] Preferably, the bending measurement assembly includes multiple monitoring telescopic rods fixed to the inner wall of the bending measurement retaining ring, an arc-shaped contact plate is fixedly connected to the piston rod end of the monitoring telescopic rod, and a pressure sensor is provided inside the monitoring telescopic rod.

[0010] Preferably, the inner wall of the cable straightening sleeve is provided with a steering groove, the steering groove is rotatably connected to the steering ring, and the steering ring is fixedly connected to the cable holding arc plate by a hydraulic push rod.

[0011] Preferably, the oscillation assembly includes an electromagnetic base fixed to the inner end face of the adapter frame, the electromagnetic base is connected to an oscillation magnetic base through two return spring rods, and both the electromagnetic base and the oscillation magnetic base are fixedly connected to a buffer pad.

[0012] Preferably, the release assembly includes a revolving release disc slidably disposed on the inner wall of a limiting arc-shaped groove, and the two limiting arc-shaped grooves are respectively fixedly connected to the inner walls of the left and right sides of the release twisting cable sleeve.

[0013] Preferably, the revolution release disc has a friction groove, the inner wall of the friction groove is rotatably connected to a self-rotating release ring, and the inner wall of the self-rotating release ring is fixedly connected to a plurality of friction rubber buttons.

[0014] Preferably, the traction assembly includes a U-shaped tie rod fixed to the mudguard, and the mudguard is fixedly connected to a sand-breaking cone.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. This solution, through the setting of the cable holding arc plate, can use the arc-shaped contact plate and the monitoring telescopic rod to sense the bending direction of the cable in real time. By using the hydraulic push rod and the adjustment ring in linkage, the bending surface of the cable is automatically adjusted to face upward, reducing groove friction.

[0017] 2. This solution, through the setting of the swing component, can utilize the intermittent swing of the electromagnetic base and the swing magnetic base in conjunction with the buffer pad to achieve micro-vibration of the cable to release internal stress and avoid the superposition of bending and torsion of the cable.

[0018] 3. This solution, through the setting of the release component, can realize the layered release of torsional force by utilizing the revolution release disc and rotation release ring in the torsion protection sleeve, avoiding local stress concentration that could lead to insulation layer damage. During the torsion transmission process, a distributed release mechanism is adopted, and the residual torsional force is finally completely eliminated at the end of the cable. Attached Figure Description

[0019] Figure 1This is a three-dimensional structural diagram of a modular assembly lead wire protection device for electrical cables proposed in this invention;

[0020] Figure 2 This is an assembly diagram of a modular lead wire protection device for electrical cables proposed in this invention;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a schematic diagram of the position of the wire-holding arc plate in a modular assembled lead wire protection device for electrical cables proposed in this invention;

[0023] Figure 5 This is a schematic diagram of the position of the orbital release disc in a modular assembled lead wire protection device for electrical cables proposed in this invention;

[0024] Figure 6 This is a schematic diagram of the release component in a modular assembly lead wire protection device for electrical cables proposed in this invention.

[0025] In the diagram: 1. Cable straightening sleeve; 2. Torque release cable protection sleeve; 3. Bending and retaining ring; 4. Monitoring telescopic rod; 5. Arc-shaped contact plate; 6. Direction adjusting ring; 7. Hydraulic push rod; 8. Cable holding arc plate; 9. Adapter frame; 10. Electromagnetic seat; 11. Reset spring rod; 12. Swinging magnetic seat; 13. Buffer pad; 14. Bending corrugated sleeve; 15. Limiting arc-shaped slide groove; 16. Revolution release disc; 17. Rotation release ring; 18. Friction rubber button; 19. Mudguard; 20. U-shaped pull rod; 21. Sand breaking cone. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] Example, refer to Figures 1 to 6 A modular assembly type lead wire protection device for electrical cables includes a wire-strapping sleeve 1 and multiple torsion-releasing wire protection sleeves 2. The end of the wire-strapping sleeve 1 is connected to a bending-measuring retaining ring 3, and a bending-measuring component for detecting the bending direction of the wound cable is provided inside the bending-measuring retaining ring 3.

[0030] Furthermore, the cable straightening sleeve 1 is fixedly connected to the torsion-relieving cable protection sleeve 2 via the adapter frame 9. The torsion-relieving cable protection sleeve 2 and the bending corrugated sleeve 14 are detachably assembled. The bending test assembly includes multiple monitoring telescopic rods 4 fixed on the inner wall of the bending test retaining ring 3. An arc-shaped contact plate 5 is fixedly connected to the piston rod end of the monitoring telescopic rod 4. A pressure sensor is installed inside the monitoring telescopic rod 4.

[0031] It should be noted that: the end of the coiled cable to be laid is inserted into the release cable sleeve 2 from the mudguard 19, and the cable passes through the self-rotation release ring 17 on the revolution release disc 16. Then, multiple release cable sleeves 2 are assembled together in sequence. The cable end is then passed between the electromagnetic seat 10 and the swing magnetic seat 12 in sequence, and then between the two cable holding arc plates 8 and multiple arc-shaped contact plates 5. The cable end is fixed after passing through. During the laying process, the traction of the U-shaped pull rod 20 is used to realize the traction movement of the entire assembly. With the synchronous unfolding of the coiled cable, the sand breaking cone 21 can reduce the movement resistance of the device and prevent sand and soil in the trench from entering the device. As the cable is continuously laid, the bent cable will exert uneven pressure on the multiple arc-shaped contact plates 5 in the bending fixing ring 3, so that the pressure of each monitoring telescopic rod 4 is different. Then, the pressure sensor in the monitoring telescopic rod 4 is used to determine which direction the cable is bent.

[0032] The cable straightening sleeve 1 is provided with a directional ring 6. The inner side wall of the directional ring 6 is connected to two symmetrically arranged cable holding arc plates 8. One side of the cable holding arc plate 8 is provided with a swing assembly for releasing the bending stress of the cable.

[0033] Furthermore, the inner wall of the cable straightening sleeve 1 is provided with a steering groove, which is rotatably connected to the steering ring 6. The steering ring 6 is fixedly connected to the cable holding arc plate 8 through the hydraulic push rod 7. The swaying assembly includes an electromagnetic seat 10 fixed on the inner end face of the adapter frame 9. The electromagnetic seat 10 is connected to the swaying magnetic seat 12 through two reset spring rods 11. Both the electromagnetic seat 10 and the swaying magnetic seat 12 are fixedly connected with a buffer pad 13.

[0034] It should be noted that: controlling the rotation direction of the directional ring 6 drives the two wire-holding arc plates 8 to rotate and adjust their direction, thereby using the hydraulic push rod 7 to clamp the two sides of the cable bending direction and adjust the cable bending direction to the top. During this process, the electromagnetic base 10 is intermittently energized to realize the reciprocating swing of the oscillating magnetic base 12.

[0035] The above benefits are: the cable can swing back and forth slightly between the buffer pads 13, thereby relieving stress on the bent cable;

[0036] Multiple release-torsion cable sleeves 2 are connected by multiple curved corrugated sleeves 14. The inner side wall of the release-torsion cable sleeve 2 is connected to two symmetrically arranged limiting arc-shaped slide grooves 15. The limiting arc-shaped slide grooves 15 are connected to release components for gradually releasing the superimposed torsion of the cable. The release-torsion cable sleeve 2 located at the end is connected to a mudguard 19, and a traction component is provided on the mudguard 19.

[0037] Furthermore, the release assembly includes a revolution release disc 16 slidably disposed on the inner wall of a limiting arc-shaped groove 15. The two limiting arc-shaped grooves 15 are respectively fixedly connected to the inner walls of the left and right sides of the release cable sleeve 2. A friction groove is provided on the revolution release disc 16. A self-rotating release ring 17 is rotatably connected to the inner wall of the friction groove. Multiple friction rubber buttons 18 are fixedly connected to the inner wall of the self-rotating release ring 17. The traction assembly includes a U-shaped pull rod 20 fixed to the mudguard 19. A sand-breaking cone 21 is fixedly connected to the mudguard 19.

[0038] It should be noted that during the laying process, the cable-holding arc plate 8 continuously adjusts the cable laying direction to prevent cable twisting after laying. During the adjustment process, the cable twisting will be transmitted and superimposed on the subsequent unlaid parts. The rotational trend generated by the twisting will cause the orbital release disc 16 to rotate within the limiting arc-shaped groove 15, releasing some of the superimposed twisting. As the cable is continuously laid, the transmitted and superimposed twisting increases and will concentrate at the rotational release ring 17. When the twisting is large, the frictional limiting force at the rotational release ring 17 is insufficient, causing the cable to rotate at the rotational release ring 17, thereby releasing the larger twisting at this point. Then, a certain amount of torsion can be superimposed again at the self-rotation release ring 17. The previously released torsion is transmitted to the next torsion release sleeve 2, the orbital release plate 16 and the self-rotation release ring 17. As the torsion is continuously transmitted and superimposed, it is gradually distributed to the subsequent orbital release plate 16 and the self-rotation release ring 17 to avoid excessive local torsion during cable laying, which could damage the insulation protection layer. After a section of cable is laid, all torsion can be completely released at the end of the cable. The setting of the torsion release sleeve 2 ensures that the cable will not come into contact with the trench during the laying process, thus avoiding friction between the cable insulation protection layer and the sand in the trench.

[0039] The advantages mentioned above are: this allows for the control of local twisting of the cable within a safe range during cable laying, preventing excessive local twisting from damaging the cable and protecting it during the cable laying process.

[0040] In use, the end of the coiled cable to be laid is inserted into the release cable sleeve 2 through the mudguard 19, and then the cable passes through the self-rotating release ring 17 on the revolving release disc 16. Multiple release cable sleeves 2 are then assembled together. The cable end is then passed between the electromagnetic base 10 and the oscillating magnetic base 12, and then between the two cable-holding arc plates 8 and multiple arc-shaped contact plates 5. The passed cable end is then fixed. During the laying process, the traction of the U-shaped pull rod 20 is used to move the entire assembly. Combined with the synchronous unfolding of the coiled cable, the sand-breaking cone 21 reduces the moving resistance of the device and prevents sand from the trench from entering the device. As the cable... During the intermittent laying, the bent cable will exert uneven pressure on the multiple arc-shaped contact plates 5 inside the bending fixing ring 3, causing different pressures on each monitoring telescopic rod 4. Then, the pressure sensor inside the monitoring telescopic rod 4 determines the direction of the cable bending, and then feeds back to control the rotation direction of the adjusting ring 6, which drives the two cable holding arc plates 8 to rotate and adjust the direction. Then, the hydraulic push rod 7 clamps the two sides of the cable bending direction and adjusts the cable bending direction upward. During this process, the electromagnetic seat 10 is intermittently energized to realize the reciprocating swing of the swinging magnetic seat 12, so that the cable swings back and forth between the buffer pads 13 with a small amplitude, thereby releasing the stress of the bent cable.

[0041] During the laying process, the cable-holding arc plate 8 continuously adjusts the cable laying direction to prevent cable twisting after laying. During the adjustment process, the cable twisting will be transmitted and superimposed on the subsequent unlaid parts. The rotational trend generated by the twisting will cause the orbital release disc 16 to rotate within the limiting arc-shaped groove 15, releasing some of the superimposed twisting. As the cable is continuously laid, the transmitted and superimposed twisting increases and will concentrate at the rotational release ring 17. When the twisting is large, the frictional limiting force at the rotational release ring 17 is insufficient, causing the cable to rotate at the rotational release ring 17, thereby releasing the large twisting at this point. Then, a certain amount of twisting can be superimposed again at the rotational release ring 17, and the previously released twisting is transmitted to the next release ring. The torsion release sleeve 2 is located on the orbital release disc 16 and the self-rotating release ring 17 inside the cable sleeve 2. As the torsion is continuously transmitted and superimposed, it is gradually distributed to the subsequent orbital release disc 16 and self-rotating release ring 17 to release the torsion. This avoids excessive local torsion during cable laying, which could damage the insulation layer. After a section of cable is laid, all the torsion can be completely released at the end of the cable. The setting of the torsion release sleeve 2 ensures that the cable will not come into contact with the trench during the laying process, and avoids the insulation layer of the cable rubbing against the sand and soil in the trench. In this way, the local torsion of the cable can be controlled at a safe state during the cable laying process, avoiding excessive local torsion that could damage the cable, and thus protecting the cable during the laying and wiring process.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A modular assembly type lead wire protection device for electrical cables, comprising a wire-strapping sleeve (1) and a plurality of untwisting lead wire sleeves (2), characterized in that, The end of the cable straightening sleeve (1) is connected to a bending fixing ring (3). The bending fixing ring (3) is provided with a bending component for detecting the bending direction of the wound cable. The cable straightening sleeve (1) is provided with an adjusting ring (6). The inner side wall of the adjusting ring (6) is connected to two symmetrically arranged wire holding arc plates (8). One side of the wire holding arc plate (8) is provided with a swing component for releasing the bending stress of the cable. Multiple release-torsion cable sleeves (2) are connected by multiple curved corrugated sleeves (14). The inner wall of the release-torsion cable sleeve (2) is connected to two symmetrically arranged limiting arc-shaped slide grooves (15). The limiting arc-shaped slide grooves (15) are connected to a release component for gradually releasing the superimposed torsion of the cable. The release-torsion cable sleeve (2) at the end is connected to a mudguard (19). The mudguard (19) is provided with a traction component.

2. The modular assembly type lead wire protection device for electrical cables according to claim 1, characterized in that, The cable straightening sleeve (1) is fixedly connected to the cable release sleeve (2) via the adapter frame (9), and the cable release sleeve (2) and the curved corrugated sleeve (14) are detachably assembled.

3. The modular assembly type lead wire protection device for electrical cables according to claim 1, characterized in that, The bending test assembly includes multiple monitoring telescopic rods (4) fixed on the inner wall of the bending test retaining ring (3). An arc-shaped contact plate (5) is fixedly connected to the piston rod end of the monitoring telescopic rod (4). A pressure sensor is installed inside the monitoring telescopic rod (4).

4. A modular assembly type lead wire protection device for electrical cables according to claim 1, characterized in that, The inner wall of the cable straightening sleeve (1) is provided with a turning groove, which is rotatably connected to the adjusting ring (6). The adjusting ring (6) is fixedly connected to the cable holding arc plate (8) through a hydraulic push rod (7).

5. A modular assembly type lead wire protection device for electrical cables according to claim 2, characterized in that, The swing assembly includes an electromagnetic base (10) fixed to the inner end face of the adapter frame (9). The electromagnetic base (10) is connected to a swing magnetic base (12) via two reset spring rods (11). Both the electromagnetic base (10) and the swing magnetic base (12) are fixedly connected to a buffer pad (13).

6. A modular assembly type lead wire protection device for electrical cables according to claim 1, characterized in that, The release assembly includes a revolving release disc (16) slidably set on the inner wall of a limiting arc groove (15), and the two limiting arc grooves (15) are respectively fixedly connected to the inner walls of the left and right sides of the release twisting guard sleeve (2).

7. A modular assembly type lead wire protection device for electrical cables according to claim 6, characterized in that, The revolution release disc (16) is provided with a friction groove, and a self-rotating release ring (17) is rotatably connected to the inner side wall of the friction groove. Multiple friction rubber buttons (18) are fixedly connected to the inner side wall of the self-rotating release ring (17).

8. A modular assembly type lead wire protection device for electrical cables according to claim 1, characterized in that, The traction assembly includes a U-shaped tie rod (20) fixed to the mudguard (19), and the mudguard (19) is fixedly connected to a sand-breaking cone (21).

Images