A fixing device for solving the difficulty in connecting 10kV line cable and bypass cable

Abstract

The application discloses a fixing device for solving the difficulty in connecting a 10kV line cable and a bypass cable, and mutually clamped first clamping jaws and second clamping jaws, one end of the first clamping jaws and the second clamping jaws is connected with a clamping piece, the inside of the upper end clamping piece of the first clamping jaw is provided with a hanging head, and the inside of the lower end clamping piece of the second clamping jaw is provided with a cable bridging device. The device is provided with safety reduction safety risks. In the load transfer work of the 10kV line cable head in the station, after the device is used, the phase-to-phase short circuit risk is reduced, the safety of the operating personnel is effectively guaranteed, and the economic benefit of the company is effectively improved. Under normal circumstances, the 10kV line in the transformer substation needs to be powered off for primary and secondary equipment maintenance, testing, and comprehensive self-reconstruction, which causes a large number of households to be powered off and a long power-off time. After the device is used, the whole station power-off can be avoided, the power supply capacity is improved, and the labor intensity is reduced.

Description

Technical Field

[0001] This invention relates to the field of fixing devices, and more particularly to a fixing device for solving the problem of difficulty in connecting 10kV line cables and bypass cables. Background Technology

[0002] During the load transfer process of 10kV distribution network lines within a substation, the following design scheme is proposed to ensure the normal connection and fixation of 10kV line cables and bypass cables:

[0003] To prevent a complete power outage of the 10kV line within the substation due to equipment maintenance, it is proposed to use a 10kV line bay to transfer power to the 10kV line in the required power outage maintenance bay. This requires disconnecting the cable from the line in the power supply bay and leaving the power supply cable head unattended. To ensure a reliable connection between the bypass cable and the power supply cable head, temporary connection and fixing devices need to be fabricated on site.

[0004] To ensure that the bypass cable and the power supply interval cable can be properly connected and fixed for use, a bridging device needs to be fabricated from the power supply cable head to the unloaded power outage line.

[0005] However, during the manufacturing process of this device, issues such as how to ensure a stable and reliable connection between the power supply interval cable head and the unloaded power outage line, how to ensure simple and easy operation of the installation process, how to effectively isolate the unloaded power outage line, how to avoid repeated temporary assembly during each operation, and how to avoid excessive physical exertion of on-site workers are all problems that, if not well controlled and resolved, will seriously affect the load transfer effect of the 10kV line in the station. Summary of the Invention

[0006] The purpose of this invention is to provide a fixing device for solving the problem of difficulty in connecting 10kV line cables and bypass cables, thereby addressing the issues raised in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] A fixing device for solving the problem of difficult connection between 10kV line cables and bypass cables includes a first rod and a second rod that are interlocked. A rotating pressing assembly is sleeved on the upper part of the first rod, and the upper part of the rotating pressing assembly is threadedly connected to the first rod. Several snap-fit ​​assemblies are symmetrically arranged on the upper part of the first rod. The lower part of the rotating pressing assembly is covered by the snap-fit ​​assemblies. The outer ends of the snap-fit ​​assemblies slide against the inner wall of the rotating pressing assembly. The rotating pressing assembly is used to press the snap-fit ​​assemblies into the first rod to snap the second rod. Fixing assemblies are provided at the top of the first rod and the bottom of the second rod. The fixing assemblies are used to snap the connecting plate. The connecting plate is provided with a connecting rod. One connecting rod is provided with a hanging head, and the other connecting rod is provided with a cable bridging device.

[0009] Preferably, the lower end of the first rod is provided with a sliding groove, the upper end of the second rod is provided with a rectangular rod, the rectangular rod is slidably inserted into the sliding groove, and the snap-fit ​​assembly is symmetrically arranged on the outside of the sliding groove.

[0010] Preferably, the snap-fit ​​assembly includes a through hole and a recess symmetrically arranged on the outside of the slide groove. The recess communicates with the upper or lower wall of the through hole. A snap-fit ​​rod is slidably connected in the through hole. The middle part of the snap-fit ​​rod has a protrusion. The protrusion is slidably connected in the recess. A spring is provided between the end of the protrusion and the end of the recess. The outer end of the snap-fit ​​rod extends out of the first rod body and has a ball. The ball slides against the inner wall of the rotating extrusion assembly. The top of the rectangular rod has an annular snap-fit ​​groove. When the inner end of the snap-fit ​​rod is inserted into the snap-fit ​​groove, the first rod body and the second rod body are snap-fitted and fixed.

[0011] Preferably, the rotating extrusion assembly includes a threaded sleeve threaded to the outer wall of the first rod, a T-shaped ring slidably connected inside the threaded sleeve, a conical connecting cylinder below the ring, a dovetail block on the inner wall of the connecting cylinder, a dovetail groove on the outer wall of the first rod, the dovetail block slidably connected to the dovetail groove, and the ball slidably abutting against the inner wall of the connecting cylinder.

[0012] Preferably, the fixing assembly includes two fixing disks located at the top end of the first rod and the bottom end of the second rod. The fixing disks are provided with opposing translation mechanisms, and the opposing translation mechanisms are provided with a pair of grippers. The lower inner side of the grippers is provided with an arc-shaped opening, and the connecting disk is slidably engaged in the arc-shaped opening.

[0013] Preferably, the opposing translation mechanism includes a straight groove on a fixed plate, a bidirectional screw is rotatably connected in the straight groove, the two ends of the bidirectional screw have opposite thread directions, both ends of the bidirectional screw are threadedly connected to sliders, the sliders are slidably connected to the straight groove, and the gripper is provided on the slider.

[0014] Preferably, insulating sleeves are fitted onto the outer walls of both the first and second rods. The insulating sleeves improve the insulation performance of the insulator. The insulating sleeves are supported by insulating material, which is a synthetic insulating material reinforced with inorganic or artificial fibers, wherein the density of the material is not less than 1.75 g / cm³. 3 The water absorption rate of the material is not greater than 0.15%, and the tangent of the dielectric loss angle at 50Hz is not greater than 0.01, which is acceptable.

[0015] Preferably, the hanging head includes a U-shaped rod disposed on the connecting rod, and two arc-shaped plates are symmetrically disposed on the inner side of the U-shaped rod.

[0016] Preferably, the cable bridging device includes a connecting accessory disposed on a connecting rod, a square frame is provided below the connecting accessory, a first annular groove is provided on the bottom edge of the square frame, a connecting sleeve is sleeved on the first annular groove, a fixing sleeve is provided below the connecting sleeve, and the fixing sleeve is fixed to the cable by bolts.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0018] This invention reduces safety risks by incorporating safety features. During load transfer operations at the outgoing cable heads of 10kV lines within a substation, using this device reduces the risk of phase-to-phase short circuits, effectively ensuring the safety of workers and improving economic efficiency. Under normal circumstances, maintenance, testing, and integrated automation upgrades of primary and secondary equipment on 10kV lines within a substation require a complete power outage, resulting in a large number of affected users and prolonged outages. Using this device avoids such outages, increases power supply capacity, and reduces labor intensity.

[0019] This invention allows for the simple up-and-down movement of the connecting cylinder, which presses a clamping rod inward. The clamping rod then secures the first and second rods. Both fixing and disassembly are simple and convenient, reducing operational difficulty and error rates, and effectively lowering the labor intensity of workers. Normally, installing three cable heads takes one hour; using this device reduces the time to half an hour. This improves the rate of live-line work, thereby increasing the reliability of power distribution networks and meeting user requirements for power supply reliability. It ensures the safe and stable operation of the power grid and equipment. Furthermore, comparisons show that the improved device for connecting and fixing 10kV line cables and bypass cables is easy to assemble and operate on-site, with high labor efficiency, meeting the requirements for tools and equipment for live-line work in distribution networks. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the fixing device of the present invention;

[0022] Figure 2 This is a cross-sectional view of the internal structure of the present invention;

[0023] Figure 3 This is a three-dimensional schematic diagram of the combination of the present invention;

[0024] Figure 4 yes Figure 1 Schematic diagram at point A in the middle;

[0025] Figure 5 yes Figure 2 Schematic diagram at point B in the middle;

[0026] Figure 6 yes Figure 2 Schematic diagram at point C;

[0027] 1-First rod body, 2-Second rod body, 3-Hanging head, 4-Cable bridging device, 5-Cable, 6-Insulating sleeve, 7-Rectangular rod, 8-Slide groove, 10-Threaded sleeve, 11-Connecting cylinder, 12-Through hole, 13-Clamping rod, 131-Protrusion, 14-Sphere, 15-Ring body, 16-Dovetail block, 161-Dovetail groove, 17-Notch, 18-Spring, 19-U-shaped rod, 20-Arc plate, 21-Square frame, 22-Connecting accessories, 23-Connecting disc, 24-Fixing disc, 25-Claw, 26-Arc opening, 27-Straight groove, 28-Double-direction screw, 29-Slider, 30-First annular groove, 31-Connecting sleeve, 32-Fixing sleeve, 33-Bolt. Detailed Implementation

[0028] The specific embodiments of this application are described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] Example 1: A fixing device for solving the problem of difficulty in connecting 10kV line cables and bypass cables, such as... Figures 1-6 As shown, the device includes a first rod 1 and a second rod 2 that are interlocked. The lower end of the first rod 1 has a groove 8, and the upper end of the second rod 2 has a rectangular rod 7 that is slidably inserted into the groove 8. A snap-fit ​​assembly is symmetrically arranged on the outside of the groove 8. A rotating pressing assembly is fitted onto the upper part of the first rod 1, and the upper part of the rotating pressing assembly is threaded to the first rod 1. Several snap-fit ​​assemblies are symmetrically arranged on the upper part of the first rod 1. The lower part of the rotating pressing assembly covers the snap-fit ​​assembly, and the outer ends of the snap-fit ​​assemblies slide against the inner wall of the rotating pressing assembly. The rotating pressing assembly is used to press the snap-fit ​​assembly into the first rod 1 to snap the second rod 2. A fixing assembly is provided at the top of the first rod 1 and the bottom of the second rod 2. The fixing assembly is used to snap the connecting disc 23. The connecting disc 23 has connecting rods, one of which has a hanging head 3, and the other has a cable bridging device 4. The rectangular rod 7 is engaged in the vertical direction of the slide groove 8. The arrangement of the rectangular rod 7 and the slide groove 8 improves the accuracy of the combination of the first rod 1 and the second rod 2.

[0030] In this embodiment, the snap-fit ​​assembly includes a through hole 12 and a recess 17 symmetrically arranged on the outside of the slide groove 8. The recess 17 communicates with the upper or lower wall of the through hole 12. A snap-fit ​​rod 13 is slidably connected inside the through hole 12. A protrusion 131 is provided in the middle of the snap-fit ​​rod 13. The protrusion 131 is slidably connected inside the recess 17. A spring 18 is provided between the end of the protrusion 131 and the end of the recess 17. The outer end of the snap-fit ​​rod 13 extends out of the first rod body 1 and is provided with a ball 14. The ball 14 slides against the inner wall of the rotating pressing assembly. The top of the rectangular rod 7 is provided with an annular snap-fit ​​groove. When the inner end of the snap-fit ​​rod 13 is inserted into the snap-fit ​​groove, the first rod body 1 and the second rod body 2 are snap-fitted and fixed. The spring 18 is used for the reset of the snap-fit ​​rod 13. The ball 14 can effectively reduce the resistance when sliding up and down, making it easier for the inner end of the snap-fit ​​rod 13 to be pressed into the slide groove 8.

[0031] In this embodiment, the rotating extrusion assembly includes a threaded sleeve 10 threadedly connected to the outer wall of the first rod 1. A T-shaped ring 15 is slidably connected inside the threaded sleeve 10. A conical connecting cylinder 11 is provided below the ring 15. A dovetail block 16 is provided on the inner wall of the connecting cylinder 11. A dovetail groove 161 is provided on the outer wall of the first rod 1. The dovetail block 16 is slidably connected within the dovetail groove 161. The ball 14 slidably abuts against the inner wall of the connecting cylinder 11. The dovetail block 16 and the dovetail groove 161 are trapezoidal in plan view. When they cooperate, they limit the sliding of the connecting cylinder 11 along the long axis of the first rod 1, preventing the connecting cylinder 11 from rotating with the threaded sleeve 10. The ring 15 ensures the rotational connection between the connecting cylinder 11 and the threaded sleeve 10.

[0032] In this embodiment, the fixing component includes two fixing disks 24 located at the top of the first rod 1 and the bottom of the second rod 2. The fixing disks 24 are provided with opposing translation mechanisms, and the opposing translation mechanisms are provided with a pair of grippers 25. The lower inner side of the grippers 25 is provided with an arc-shaped opening 26, and the connecting disk 23 is slidably engaged in the arc-shaped opening 26.

[0033] The opposing translation mechanism includes a straight groove 27 on a fixed disk 24. A bidirectional screw 28 is rotatably connected within the straight groove 27. The two ends of the bidirectional screw 28 have opposite thread directions, and both ends of the bidirectional screw 28 are threadedly connected to sliders 29. The sliders 29 are slidably connected to the straight groove 27, and the grippers 25 are mounted on the sliders 29. One end of the bidirectional screw 28 extends out of the fixed disk 24 and has a rotating handle. Because the two ends of the bidirectional screw 28 have opposite thread directions, when the bidirectional screw 28 is rotated, the two sliders 29 will move in opposite or opposite directions along the straight groove 27, facilitating the adjustment of the opening and closing of the grippers 25 on the sliders 29 and enabling quick adjustment of the relative position of the two grippers 25. The arc-shaped opening 26 on the gripper 25 not only securely engages the connecting disk 23 but also allows the connecting disk 23 to rotate between the two arc-shaped openings 26, preventing the connecting disk 23 from dangling and falling, thus improving the stability of the connecting disk 23 during rotation.

[0034] In this embodiment, insulating sleeves 6 are fitted onto the outer walls of both the first rod 1 and the second rod 2. The insulating sleeves 6 improve the insulation performance of the insulator. The insulating sleeves 6 are supported by insulating material, which is a synthetic insulating material reinforced with inorganic or artificial fibers, wherein the density of the material is not less than 1.75 g / cm³. 3 The material's water absorption rate is no more than 0.15%, and the 50Hz dielectric loss tangent is no more than 0.01. Qualified.

[0035] In this embodiment, the hanging head 3 includes a U-shaped rod 19 disposed on the connecting rod, and two arc-shaped plates 20 are symmetrically disposed on the inner side of the U-shaped rod 19.

[0036] The cable bridging device 4 includes a connecting accessory 22 mounted on a connecting rod. A square frame 21 is located below the connecting accessory 22. A first annular groove 30 is provided on the bottom edge of the square frame 21. A connecting sleeve 31 is fitted onto the first annular groove 30. A fixing sleeve 32 is located below the connecting sleeve 31. The fixing sleeve 32 is fixed to the cable 5 by bolts 33. The connecting accessory 22 and the connecting plate 23 allow the square frame 21 and the U-shaped rod 19 to rotate, facilitating the adjustment of the positions of the arc plate 20 and the square frame 21. The square frame 21 exhibits good resistance to current and heat generation. The bolts 33 are rubber screws, which further improve the insulation of the insulator. The cable is located inside the fixing sleeve 32, and the bolts 33 fix the position of the cable, preventing it from falling out of the fixing hole.

[0037] Working process and principle:

[0038] First, rotate the bidirectional screw 28 so that the two sliders 29 move in opposite directions, increasing the distance between the two jaws 25. Place the connecting plate 23 between the two jaws 25. Then, rotate the bidirectional screw 28 in the opposite direction so that the two jaws 25 move in opposite directions until the connecting plate 23 is inserted into the arc-shaped opening 26. In this way, the connection between the first rod body 1 and the second rod body 2 and the hanging head 3 and the cable bridge device 4 are completed respectively.

[0039] Then, the U-shaped rod 19 and the arc plate 20 are used to hang and clamp the bypass cable. The fixing sleeve 32 is then fixed to the high-voltage cable 5. Next, the rectangular rod 7 on the second rod body 2 is inserted into the sliding groove 8 inside the first rod body 1 until the rectangular rod 7 is fully inserted into the sliding groove 8. At this point, the annular groove at the top of the rectangular rod 7 is aligned with the inner opening of the through hole 12. Keeping the relative positions of the first rod body 1 and the second rod body 2 unchanged, the threaded sleeve 10 is rotated. The threaded sleeve 10 rotates relative to the top of the connecting cylinder 11. Due to the... Due to the limiting effect of the tail block 16 and the dovetail groove 161, the threaded sleeve 10 can only drive the connecting cylinder 11 to move down along the dovetail groove 161. Since the connecting cylinder 11 is narrow at the top and wide at the bottom, the distance between the inner wall of the connecting cylinder 11 and the outer wall of the first rod 1 decreases during the downward movement of the connecting cylinder 11. The connecting cylinder 11 will press the locking rod 13 into the sliding groove 8 along the through hole 12. Then the inner end of the locking rod 13 is locked into the annular locking groove. At this time, the rectangular rod 7 is limited and fixed by the locking rod 13. Then the first rod 1 and the second rod 2 are locked and fixed. When the locking rod 13 moves inward, it causes the protrusion 131 to compress the spring 18 together. When the threaded sleeve 10 rotates in the opposite direction, it causes the connecting cylinder 11 to move upward. The spring 18 resets, causing the locking rod 13 and the protrusion 131 to move outward and reset, so that the ball 14 keeps abutting against the inner wall of the connecting cylinder 11. When the inner end of the locking rod 13 moves out of the slide groove 8, the fixed state of the first rod 1 and the second rod 2 can be released. The first rod 1 and the second rod 2 can be separated by directly pulling out the rectangular rod 7, which also releases the connection between the bypass line and the high-voltage cable 5.

[0040] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, 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, and therefore should not be construed as a limitation of this invention.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fixing device for solving the problem of difficulty in connecting 10kV line cables and bypass cables, characterized in that: The system includes a first rod (1) and a second rod (2) that are interlocked. A rotating pressing assembly is fitted on the upper part of the first rod (1). The upper part of the rotating pressing assembly is threaded to the first rod (1). Several snap-fit ​​assemblies are symmetrically arranged on the upper part of the first rod (1). The lower part of the rotating pressing assembly is covered by the snap-fit ​​assemblies. The outer ends of the snap-fit ​​assemblies slide against the inner wall of the rotating pressing assembly. The rotating pressing assembly is used to press the snap-fit ​​assemblies into the first rod (1) to snap the second rod (2). The top end of the first rod (1) and the bottom end of the second rod (2) are both provided with fixing assemblies. The fixing assemblies are used to snap the connecting plate (23). The connecting plate (23) is provided with connecting rods. One connecting rod is provided with a hanging head (3), and the other connecting rod is provided with a cable bridging device (4). The lower end of the first rod (1) is provided with a sliding groove (8), and the upper end of the second rod (2) is provided with a sliding groove (8). A rectangular rod (7) is slidably inserted into a groove (8). A snap-fit ​​assembly is symmetrically arranged on the outside of the groove (8). The snap-fit ​​assembly includes a through hole (12) and a recess (17) symmetrically arranged on the outside of the groove (8). The recess (17) communicates with the upper or lower wall of the through hole (12). A snap-fit ​​rod (13) is slidably connected in the through hole (12). A protrusion (131) is provided in the middle of the snap-fit ​​rod (13). 1) Sliding connection within the recess (17), a spring (18) is provided between the protrusion (131) and the end of the recess (17), the outer end of the locking rod (13) extends out of the first rod body (1) and is provided with a ball (14), the ball (14) slides against the inner wall of the rotating extrusion assembly, the top of the rectangular rod (7) is provided with an annular groove, when the inner end of the locking rod (13) is inserted into the groove, the first rod body (1) and the second rod body (2) are locked and fixed.

2. The fixing device for solving the problem of difficult connection between 10kV line cables and bypass cables according to claim 1, characterized in that: The rotating extrusion assembly includes a threaded sleeve (10) threaded to the outer wall of the first rod (1), a T-shaped ring (15) slidably connected inside the threaded sleeve (10), a conical connecting cylinder (11) below the ring (15), a dovetail block (16) on the inner wall of the connecting cylinder (11), a dovetail groove (161) on the outer wall of the first rod (1), the dovetail block (16) slidably connected inside the dovetail groove (161), and the ball (14) slidably abutting against the inner wall of the connecting cylinder (11).

3. The fixing device for solving the problem of difficult connection between 10kV line cables and bypass cables according to claim 2, characterized in that: The fixing assembly includes two fixing disks (24) located at the top of the first rod (1) and the bottom of the second rod (2). The fixing disks (24) are provided with opposing translation mechanisms. The opposing translation mechanisms are provided with a pair of grippers (25). The lower inner side of the grippers (25) is provided with an arc-shaped opening (26). The connecting disk (23) is slidably engaged in the arc-shaped opening (26).

4. The fixing device for solving the problem of difficult connection between 10kV line cables and bypass cables according to claim 3, characterized in that: The opposing translation mechanism includes a straight groove (27) on a fixed disk (24), and a bidirectional screw (28) is rotatably connected in the straight groove (27). The two ends of the bidirectional screw (28) have opposite thread directions, and both ends of the bidirectional screw (28) are threadedly connected to sliders (29). The sliders (29) are slidably connected to the straight groove (27), and the gripper (25) is provided on the slider (29).

5. A fixing device for solving the problem of difficult connection between 10kV line cables and bypass cables according to claim 4, characterized in that: Insulating sleeves (6) are provided on the outer walls of both the first rod (1) and the second rod (2). The insulating sleeves (6) are made of insulating material, which is a synthetic insulating material reinforced with inorganic or artificial fibers, and the density of the material is not less than 1.75 g / cm³. 3 The water absorption rate of the material is no more than 0.15%.

6. A fixing device for solving the problem of difficult connection between 10kV line cables and bypass cables according to claim 5, characterized in that: The hanging head (3) includes a U-shaped rod on the connecting rod, and two arc-shaped plates (20) are symmetrically arranged on the inner side of the U-shaped rod.

7. A fixing device for solving the problem of difficulty in connecting 10kV line cables and bypass cables according to claim 6, characterized in that: The cable bridging device (4) includes a connecting fitting (22) on the connecting rod. The connecting fitting (22) has a square frame (21) below it. The square frame (21) has a first annular groove (30) on its bottom edge. A connecting sleeve (31) is fitted onto the first annular groove (30). A fixing sleeve (32) is provided below the connecting sleeve (31). The fixing sleeve (32) is fixed to the cable (5) by bolts (33).

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