High-voltage wire clamping and fastening fitting

Abstract

The invention relates to the technical field of wire clamps, and discloses a high-voltage wire clamping and fastening fitting, which comprises a base, a wire clamp and a fastening part, the wire clamping disc is fixedly connected to the top end of the base, the wire clamping disc is of an annular structure, through holes are formed in the two opposite sides of the wire clamping disc, and a cable penetrates through the two through holes; the fastening sleeve is rotationally connected to the inner ring side of the wire chuck, an extrusion hole is formed in the fastening sleeve, the part, extending into the wire chuck, of the cable penetrates through the extrusion hole, a pressing piece is elastically connected into the extrusion hole and abuts against the cable, a pressure sensor is arranged on the pressing piece and used for obtaining a pressure signal of the pressing piece, and a ratchet mechanism is arranged at the bottom end of the fastening sleeve; the ratchet mechanism is used for unidirectionally moving the pressing sheet towards the cable. The cable fixing stability can be improved, and the cable connecting efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of wire clamps, in particular to a high-voltage wire clamping fastener. BACKGROUND

[0002] At present, a common grounding wire clamp mainly comprises a reinforced shell, high-strength bolts and nuts, and can realize power connection continuity between cables by inserting terminals into the wire clamp and then connecting the terminals at the bottom end of the wire clamp with the wiring post when the cables need to be connected or branched.

[0003] In the prior art, such as a high-voltage wire code clamp disclosed in patent No. CN110401162B, the side clamping plates are opened and closed to drive the pressing plates to press the cables in the vertical direction, so as to realize wiring fixation. However, the side clamping plates are adjusted by rotating the bolts, and the elastic effect of the cables reversely pushes the side clamping plates as the pressing plates extrude the cables, so that the bolts are prone to loosening under the pressure, thereby affecting the pressing effect of the pressing plates on the cables.

[0004] In addition, the connection mode of the high-strength bolts in the prior art requires high-torque screwing of the bolts, the process is relatively complicated, and the connection operation time is relatively long. Therefore, there is an urgent need for a high-voltage wire clamping fastener to solve the above problems. SUMMARY

[0005] The application aims to provide a high-voltage wire clamping fastener to solve the problems existing in the prior art and improve the fixing stability of the cables and the efficiency of connecting the cables.

[0006] To achieve the above-mentioned purpose, the application provides the following scheme: the application provides a high-voltage wire clamping fastener, which comprises: a base, the bottom end of which is fixedly connected with an insulator; a wire clamp disc, which is fixedly connected to the top end of the base, is in a ring structure, and opposite sides of the wire clamp disc are provided with through holes, and cables are arranged in the through holes; a fastening sleeve, which is connected to the inner side of the wire clamp disc, is provided with an extrusion hole, the part of the cable extending into the wire clamp disc penetrates through the extrusion hole, an elastic piece is elastically connected in the extrusion hole, the elastic piece abuts against the cable, a pressure sensor is arranged on the elastic piece, the pressure sensor is used to acquire the pressure signal of the elastic piece, and the bottom end of the fastening sleeve is provided with a ratchet mechanism, which is used to make the elastic piece move in one direction towards the cable.

[0007] Preferably, the ratchet mechanism comprises: A limiting plate is fixedly connected to the bottom end of the fastening sleeve, a limiting slot is arranged at the bottom end of the wire clamp disc, the limiting plate is connected to the limiting slot, a plurality of ratchet grooves are arranged on the outer circumferential side of the limiting plate, and the plurality of ratchet grooves are distributed at equal intervals in the circumferential direction. A pawl is rotationally connected to the wire clamp disc, the pawl is in sliding fit with the plurality of ratchet grooves, an elastic member is arranged in the wire clamp disc, and the pawl moves towards the limiting plate through the elastic member.

[0008] Preferably, the elastic member comprises: A rotating rod is fixedly connected to the pawl and extends out of the pawl and the wire clamp disc at both ends. A torsional spring is arranged on the part of the rotating rod extending out of the pawl, and both ends of the torsional spring are fixedly connected to the wire clamp disc and the pawl respectively.

[0009] Preferably, the device further comprises: A pull rod is arranged in a sliding hole arranged on the wire clamp disc, the pull rod is slidably connected to the sliding hole, one end of the pull rod extending into the sliding hole is rotationally connected to a connecting plate through a bearing, a pull ring is fixedly connected to the connecting plate, a lifting ring is fixedly connected to the side of the pawl away from the limiting plate, and the pull ring is buckled and fixed with the lifting ring.

[0010] Preferably, a connecting hole is arranged on the outer side wall of the wire clamp disc, the connecting hole is in communication with the sliding hole, a spring is arranged in the connecting hole, the spring is arranged on the pull rod, both ends of the spring are fixedly connected to the end of the pull rod and the inner wall of the connecting hole respectively, and the pull rod has an elastic tendency towards the limiting plate.

[0011] Preferably, the diameter of the fastening sleeve is smaller than the diameter of the limiting plate.

[0012] Preferably, a groove is arranged on the side wall of the extrusion hole, a pressing plate is slidably connected to the groove, an extension rod is slidably connected to the groove, a compression spring is arranged on the extension rod, both ends of the compression spring are in abutment with the extension rod and the inner wall of the groove respectively, a pressure sensor is fixedly connected to the groove, and the detection end of the pressure sensor is in contact with the extension rod.

[0013] Preferably, a first accommodating interval is arranged on the side of the through hole close to the pressing plate, and a second accommodating interval is arranged on the side of the extrusion hole away from the pressing plate.

[0014] Preferably, the top end of the fastening sleeve extends out of the wire clamp disc, a knob is fixedly connected to the part of the fastening sleeve extending out of the wire clamp disc, and an end cover is fixedly connected to the top end of the fastening sleeve.

[0015] Preferably, the pressing plate is in a circular arc structure, and a cushion layer is fixedly connected to the side of the pressing plate close to the cable.

[0016] The present application discloses the following technical effects: The present application utilizes the insulator and the base to support and fix the wire clamp disc, the cable is penetrated through the wire clamp disc from the through hole, and the fastening sleeve is rotatably connected in the wire clamp disc, the fastening sleeve and the wire clamp disc are used to clamp and fix the cable, the efficiency of connecting the cable is accelerated, the pressing piece in the extrusion hole is abutted against the cable by opening the extrusion hole on the fastening table, the contact effect on the cable is formed, the pressure signal of the pressing piece is acquired by the pressure sensor, when the monitoring pressure signal is reduced, it can be known that the fastening effect on the cable is reduced, the fixing stability of the cable is affected, the fixing signal is acquired by the personnel in time, so that the cable is effectively and stably fixed, in addition, the pressing piece can only rotate unidirectionally towards the cable by the ratchet mechanism, with the continuous fastening of the fastening sleeve, the long-acting extrusion and fixation of the pressing piece on the cable are maintained. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The connection relationship diagram of the insulator and the base in the present application; Figure 2 The structure diagram of the fastening sleeve and the wire clamp disc in the present application; Figure 3 The connection relationship diagram of the fastening sleeve and the limiting plate in the present application; Figure 4 The structure diagram of the pressing piece in the present application; Figure 5 The connection relationship diagram of the pawl and the pull rod in the present application; Among them, 1, base; 2, insulator; 3, wire clamp disc; 4, through hole; 5, fastening sleeve; 6, extrusion hole; 7, pressing piece; 8, pressure sensor; 9, cable; 10, limiting plate; 11, ratchet groove; 12, pawl; 13, rotating rod; 14, torsional spring; 15, pull rod; 16, connecting plate; 17, pull ring; 18, lifting ring; 19, spring; 20, telescopic rod; 21, compression spring; 22, knob; 23, end cover; 24, cushion layer. DETAILED DESCRIPTION

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Reference Figures 1-5 This invention provides a high-voltage wire clamp fastening fitting, comprising: Base 1, with an insulator 2 fixedly connected to its bottom end; The wire clamp 3 is fixed to the top of the base 1. The wire clamp 3 has a ring structure. Through holes 4 are opened on the opposite sides of the wire clamp 3, and cables 9 are inserted into the two through holes 4. The fastening sleeve 5 is connected to the inner ring side of the wire clamp 3. The fastening sleeve 5 has a compression hole 6. The part of the cable 9 that extends into the wire clamp 3 passes through the compression hole 6. A pressure plate 7 is elastically connected in the compression hole 6. The pressure plate 7 abuts against the cable 9. A pressure sensor 8 is provided on the pressure plate 7. The pressure sensor 8 is used to obtain the pressure signal of the pressure plate 7. A ratchet mechanism is provided at the bottom end of the fastening sleeve 5. The ratchet mechanism is used to make the pressure plate 7 move unidirectionally toward the cable 9.

[0022] This invention utilizes an insulator 2 and a base 1 to support and fix a wire clamp 3. A cable 9 passes through a through hole 4 into the wire clamp 3, and a fastening sleeve 5 is rotatably connected within the wire clamp 3. The fastening sleeve 5 and the wire clamp 3 act in opposite directions to clamp and fix the cable 9, accelerating the connection efficiency of the cable 9. Furthermore, by opening a compression hole 6 on the fastening platform, a pressure plate 7 inside the compression hole 6 abuts against the cable 9, forming a contact action on the cable 9. The pressure signal of the pressure plate 7 is obtained through a pressure sensor 8. When the monitored pressure signal decreases, it can be determined that the fastening effect on the cable 9 has decreased, affecting the fixation stability of the cable 9. By obtaining the fixation signal in a timely manner, the cable 9 can be effectively stabilized. In addition, the pressure plate 7 is stabilized by a ratchet mechanism, so that the pressure plate 7 can only rotate in one direction toward the cable 9. As the fastening sleeve 5 is continuously tightened, the pressure plate 7 maintains a long-term compression fixation of the cable 9.

[0023] Specifically, the base 1 is fixedly connected to the crossarm and other iron accessory structures by the insulator 2, and the cable 9 is energized. This is a conventional design structure for high-voltage clamps and will not be described in detail.

[0024] Furthermore, the ratchet mechanism includes: The limiting plate 10 is fixed at the bottom end of the fastening sleeve 5, the bottom end of the wire clamp disc 3 is provided with a limiting groove, the limiting plate 10 is connected in the limiting groove, a plurality of ratchet grooves 11 are arranged on the outer circumferential side of the limiting plate 10, and the plurality of ratchet grooves 11 are distributed at equal intervals in the circumferential direction; The pawl 12 is rotationally connected in the wire clamp disc 3, the pawl 12 is in sliding fit with the plurality of ratchet grooves 11, the wire clamp disc 3 is provided with an elastic element, and the pawl 12 moves towards the limiting plate 10 through the elastic element.

[0025] Through cooperation of the pawl 12 and the ratchet grooves 11 on the outer circumferential side of the limiting plate 10, the elastic element provides elastic force to the pawl 12, the pawl 12 is kept in abutment with the ratchet grooves 11, one-way rotation of the limiting plate 10 is realized, the limiting plate 10 is fixed with the fastening sleeve 5, the extrusion hole 6 is arranged in the fastening sleeve 5, and the tablet 7 is kept fixed and stable through one-way rotation of the fastening sleeve 5 relative to the wire clamp disc 3 to extrude the cable 9.

[0026] Further, the elastic element comprises: The rotating rod 13 penetrates through the pawl 12 and is fixed thereon, and both ends of the rotating rod 13 extend out of the pawl 12 and are connected with the wire clamp disc 3; The torsional spring 14 is arranged on the part of the rotating rod 13 extending out of the pawl 12, and both ends of the torsional spring 14 are fixed with the wire clamp disc 3 and the pawl 12 respectively.

[0027] The rotating rod 13 is used for rotationally connecting the pawl 12 in the wire clamp disc 3, the torsional spring 14 is arranged on the rotating rod 13 to provide elastic force to the rotating rod 13, the pawl 12 is kept in abutment with the limiting plate 10, and the pawl 12 can be in sliding fit with the ratchet grooves 11.

[0028] Further, the elastic element comprises: The pull rod 15 is slidably connected in the sliding hole in the wire clamp disc 3, one end of the pull rod 15 extending into the sliding hole is rotationally connected with the connecting plate 16 through a bearing, the connecting plate 16 is fixed with the pull ring 17, the pawl 12 is fixed with the lifting ring 18 on the side away from the limiting plate 10, and the pull ring 17 is buckled and fixed with the lifting ring 18.

[0029] The pull rod 15 is used for fixing the pawl 12, the pull ring 17 is fixed on the connecting plate 16, the connecting plate 16 is rotationally connected with the pull rod 15, the pull ring 17 is moved, the pull ring 17 is buckled and fixed with the lifting ring 18, the rotation of the pawl 12 is realized, when it is needed to rotate and loosen the fastening sleeve 5, the pawl 12 is separated from the ratchet grooves 11 by pulling the pull rod 15 outward, and the convenience of personnel operation is improved.

[0030] Furthermore, the outer wall of the wire clamp 3 is provided with a connecting hole, which communicates with the sliding hole, and a spring 19 is provided in the connecting hole. The spring 19 is wound around the pull rod 15, and the two ends of the spring 19 are respectively fixed to the end of the pull rod 15 and the inner wall of the connecting hole. The pull rod 15 has an elastic tendency toward the limiting plate 10.

[0031] The spring 19 provides an elastic pulling force to the pull rod 15 toward the limiting plate 10, while the elastic action of the torsion spring 14 also acts on the pawl 12, causing the pawl 12 to face the limiting plate 10, thus maintaining the elastic resistance between the pawl 12 and the ratchet groove 11.

[0032] Furthermore, the diameter of the fastening sleeve 5 is smaller than the diameter of the limiting plate 10. This allows the limiting plate 10, which slides within the limiting groove, to provide a limiting and stabilizing effect on the fastening sleeve 5, thereby enabling the fastening sleeve 5 to rotate in conjunction with the wire clamp 3.

[0033] Furthermore, a groove is provided on the side wall of the extrusion hole 6, the pressure plate 7 is slidably connected in the groove, and a telescopic rod 20 is slidably connected in the groove. A compression spring 21 is wound on the telescopic rod 20, and the two ends of the compression spring 21 abut against the telescopic end of the telescopic rod 20 and the inner wall of the groove, respectively. The pressure sensor 8 is fixed in the groove, and the detection end of the pressure sensor 8 is in contact with the telescopic rod 20.

[0034] The pressure plate 7 is elastically supported by the compression spring 21 and the telescopic rod 20. As the fastening sleeve 5 rotates, the pressure plate 7 abuts against the cable 9 and squeezes the compression spring 21 and the telescopic rod 20. The fastening sleeve 5 and the cable clamp 3 are kept relatively fixed by the pawl 12 and the ratchet groove 11, so that the pressure plate 7 and the cable 9 are pressed firmly. The elastic pressure signal transmitted by the telescopic rod 20 and the compression spring 21 is obtained by the pressure sensor 8, so as to effectively monitor the pressing force of the pressure plate 7 on the cable 9. When the pressure signal decreases, the information of the reduced fastening effect on the cable 9 can be obtained, which makes it convenient for the staff to directly tighten and repair the problematic cable 9.

[0035] Furthermore, the through hole 4 extends into a first receiving area on the side near the pressing tablet 7, and the extrusion hole 6 extends into a second receiving area on the side away from the pressing tablet 7.

[0036] By extending a first receiving area on the through hole 4 and a second receiving area on the extrusion hole 6, it is convenient to thread the cable 9 through and connect the cable 9 to the clamp 3 and the fastening sleeve 5. The first receiving area and the second receiving area are in opposite directions, so that under the extrusion action of the pressure plate 7, the fastening sleeve 5 and the clamp 3 can cooperate in opposite directions to extrude and fix the cable 9, thereby improving the fixation stability of the cable 9.

[0037] Furthermore, the top of the fastening sleeve 5 extends out to the wire clamp 3, and the part of the fastening sleeve 5 extending out of the wire clamp 3 is fitted with a knob 22, and the top of the fastening sleeve 5 is fitted with an end cap 23.

[0038] The end cover 23 seals the fastening sleeve 5, and the fastening sleeve 5 is fixed with the knob 22, so that the fastening sleeve 5 is conveniently screwed to adjust the position between the extrusion hole 6 and the through hole 4, and the fixing stability of the cable 9 is improved.

[0039] Further, the pressing piece 7 is in a circular arc structure, and the side of the pressing piece 7 close to the cable 9 is fixed with the cushion layer 24.

[0040] The pressing piece 7 is designed in a circular arc structure, and the cushion layer 24 is fixed on the pressing piece 7, so that the contact friction of the pressing piece 7 on the cable 9 is improved.

[0041] The application provides a working principle of a high-pressure wire clamping fastening fitting. The cable 9 is arranged in the wire clamp disc 3, then the fastening sleeve 5 is screwed, the extrusion hole 6 on the fastening sleeve 5 is matched with the through hole 4 to extrude and fix the cable 9, the pressing piece 7 is abutted with the cable 9, the pressing piece 7 extrudes the extension rod 20 and the compression spring 21, the pressure sensor 8 receives the pressure signal from the pressing piece 7, the ratchet claw 12 and the ratchet tooth groove 11 keep the stability of the elastic extrusion between the pressing piece 7 and the cable 9, the cable 9 is efficiently and stably fixed, when the pressure sensor 8 monitors that the pressure signal is reduced, it is known that the fixing effect on the cable 9 is reduced, so that the staff can perform maintenance correspondingly, in the process, only the pull rod 15 needs to be pulled to separate the ratchet claw 12 from the ratchet tooth groove 11, then the fastening sleeve 5 is reversely rotated, the cable 9 and the wire clamp disc 3 can be disassembled, and the working efficiency is effectively improved.

[0042] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] The above-described embodiments are only preferred modes of the present application, and do not limit the scope of the present application, and various modifications and improvements to the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope of the present application.

Claims

1. A high-voltage wire clamp fastening fitting, characterized in that, include: The base (1) has an insulator (2) fixedly connected to its bottom end; A wire clamp (3) is fixed to the top of the base (1). The wire clamp (3) has a ring structure. Through holes (4) are provided on opposite sides of the wire clamp (3). Cables (9) are inserted into the two through holes (4). A fastening sleeve (5) is connected to the inner ring side of the wire clamp (3). The fastening sleeve (5) has a compression hole (6). The portion of the cable (9) that extends into the wire clamp (3) passes through the compression hole (6). A pressure plate (7) is elastically connected inside the compression hole (6). The pressure plate (7) abuts against the cable (9). A pressure sensor (8) is provided on the pressure plate (7). The pressure sensor (8) is used to obtain the pressure signal of the pressure plate (7). A ratchet mechanism is provided at the bottom end of the fastening sleeve (5). The ratchet mechanism is used to make the pressure plate (7) move unidirectionally toward the cable (9).

2. The high-voltage wire clamp fastening hardware according to claim 1, characterized in that, The ratchet mechanism includes: The limiting plate (10) is fixed to the bottom end of the fastening sleeve (5). The bottom end of the wire clamp (3) is provided with a limiting groove. The limiting plate (10) is rotated into the limiting groove. The outer periphery of the limiting plate (10) is provided with a number of ratchet grooves (11). The number of ratchet grooves (11) are distributed at equal intervals in the circumference. A pawl (12) is rotatably connected inside the wire clamp (3). The pawl (12) is slidably engaged with several of the ratchet grooves (11). An elastic element is provided inside the wire clamp (3). The pawl (12) moves toward the limiting plate (10) through the elastic element.

3. The high-voltage wire clamp fastening hardware according to claim 2, characterized in that, The elastic element includes: The rotating rod (13) is fixedly connected to the pawl (12) through it, and both ends of the rotating rod (13) extend out of the pawl (12) and are connected to the wire clamp (3); A torsion spring (14) is wound around the portion of the rotating rod (13) that extends out of the pawl (12), and the two ends of the torsion spring (14) are fixedly connected to the wire clamp (3) and the pawl (12) respectively.

4. The high-voltage wire clamp fastening hardware according to claim 2, characterized in that, Also includes: A pull rod (15) is provided with a sliding hole on the wire clamp (3). The pull rod (15) slides in the sliding hole. One end of the pull rod (15) that extends into the sliding hole is connected to a connecting plate (16) via a bearing. A pull ring (17) is fixedly connected to the connecting plate (16). A lifting ring (18) is fixedly connected to the side of the pawl (12) away from the limiting plate (10). The pull ring (17) is fastened and fixed to the lifting ring (18).

5. The high-voltage wire clamp fastening hardware according to claim 4, characterized in that: The outer wall of the clamp disc (3) is provided with a connecting hole, which is connected to the sliding hole. A spring (19) is provided in the connecting hole. The spring (19) is wound around the pull rod (15). The two ends of the spring (19) are respectively fixed to the end of the pull rod (15) and the inner wall of the connecting hole. The pull rod (15) has an elastic tendency toward the limiting plate (10).

6. The high-voltage wire clamp fastening hardware according to claim 2, characterized in that: The diameter of the fastening sleeve (5) is smaller than the diameter of the limiting plate (10).

7. The high-voltage wire clamp fastening hardware according to claim 1, characterized in that: The side wall of the extrusion hole (6) is provided with a groove, the pressure plate (7) is slidably connected in the groove, and a telescopic rod (20) is slidably connected in the groove. A compression spring (21) is wound on the telescopic rod (20). The two ends of the compression spring (21) abut against the telescopic rod (20) and the inner wall of the groove, respectively. The pressure sensor (8) is fixed in the groove, and the detection end of the pressure sensor (8) is in contact with the telescopic rod (20).

8. The high-voltage wire clamp fastening hardware according to claim 1, characterized in that: The through hole (4) extends into a first receiving area on the side near the pressure plate (7), and the extrusion hole (6) extends into a second receiving area on the side away from the pressure plate (7).

9. The high-voltage wire clamp fastening hardware according to claim 1, characterized in that: The top of the fastening sleeve (5) extends out of the wire clamp (3), and a knob (22) is fitted and fixed to the part of the fastening sleeve (5) that extends out of the wire clamp (3). An end cap (23) is fixed to the top of the fastening sleeve (5).

10. The high-voltage wire clamp fastening fitting according to claim 1, characterized in that: The pressure plate (7) has an arc-shaped structure, and a pad (24) is fixed to the side of the pressure plate (7) near the cable (9).

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