A quick-mounting wire clamp device for power distribution network non-stop operation

Abstract

The application belongs to the technical field of electric power fitting structure, and particularly relates to a quick mounting wire clamp device for power distribution network non-stop operation. The device comprises a wire clamp body, a wire clamp cover, an insulating cover base, an insulating cover cap, a ring bolt and a fastening part. The fastening part is arranged in the interior of the insulating cover cap and comprises a spring, one end of which is connected to the insulating cover cap and the other end of which is connected to a strip-shaped gasket. A threaded gasket hole is formed in the gasket. The ring bolt is sequentially threaded through the insulating cover base, the wire clamp body and the wire clamp cover, and is screwed into the gasket hole. The gasket pulls down the insulating cover cap and the insulating cover base to be locked and sealed by the spring, and then the gasket continues to press down the wire clamp cover under the driving of the ring bolt to lock the wire together with the wire clamp body. The application not only facilitates high-altitude operation construction, but also reliably connects with wires of different diameters and realizes full insulation sealing.

Description

Technical Field

[0001] This invention belongs to the field of power fitting structure technology, and in particular relates to a quick-installation clamp device for live-line work in power distribution networks. Background Technology

[0002] Bypass (grounding) clamps for live-line work are non-load-bearing connection hardware in power systems. They are mainly used in overhead lines of power distribution systems to provide emergency bypass power supply or to ensure safe grounding and voltage testing during maintenance.

[0003] Currently, there are many wire clamps with voltage detection and grounding functions, such as C-type voltage detection and grounding clamps, JDH voltage detection and grounding clamps, JDL voltage detection and grounding clamps, JBCD insulation puncture voltage detection and grounding clamps, stirrup clamps, etc. These clamps generally suffer from technical problems in adapting to conductors of different diameters; more importantly, their insulation protection measures are relatively rudimentary. Most clamps only have a small amount of insulation layer wrapped around the outside of the clamping part, leaving the metal conductor exposed. This not only poses a safety risk, but also makes the connection points highly susceptible to corrosion from long-term exposure to oxygen and moisture, leading to connection failures. Furthermore, since the installation of bypass clamps for live-line work occurs at height, requiring construction personnel to work at height or remotely operate from the ground using a lever, it is difficult to simultaneously achieve ease of installation and effective insulation. Summary of the Invention

[0004] The purpose of this invention is to provide a new bypass clamp for live-line work, which solves the technical problem that the bypass clamp for live-line work in the prior art is insufficient in effective insulation protection and difficult to adapt to conductors of different diameters.

[0005] The technical solution of the present invention is: a quick-installation wire clamp device for live-line operation in power distribution network, comprising a wire clamp part and an insulating cover part, wherein the wire clamp part is provided with an arc-shaped toothed groove for clamping the wire, and the insulating cover part covers the wire clamp part; It also includes ring bolts and fasteners; The wire clamp includes a wire clamp body and a wire clamp cover, which are hinged together by a hinge shaft and arranged opposite to each other. The insulating cover includes an insulating cover base and an insulating cover, which are hinged together and arranged opposite to each other, with the hinge axis located inside the insulating cover base; The hinge shaft is provided with self-locking components at both ends of the wire clamp, and the self-locking components are used to drive the insulating cover to close towards the insulating cover seat. The fastening part is disposed inside the insulating cover and includes: A spring is connected at one end to the insulating cover and at the other end to a strip-shaped washer. The washer has a threaded washer hole. The ring bolt passes through the insulating cover, the clamp body, and the clamp cover in sequence and is screwed into the washer hole. The washer is pulled down by the spring to lock the insulating cover and the insulating cover together. Then, the washer continues to press down on the clamp cover under the action of the ring bolt, and together with the clamp body, locks the wire. Multiple guide posts are fixed inside the insulating cover and located on both sides of the gasket, with the gasket and the guide posts in a sliding fit.

[0006] Optionally, the fastening part further includes a fixing post and a nut, the fixing post being fixedly connected inside the insulating cover; one end of the spring is fitted and snapped onto the fixing post, and the other end is connected to the bottom end of the nut, the top end of the nut being fixedly connected to the washer; the thread on the washer hole is provided by the nut; the ring bolt passes through the insulating cover, the clamp body and the clamp cover in sequence, and then screws into the entire threaded hole to fix the insulating cover, the clamp body, the clamp cover and the insulating cover.

[0007] Optionally, the gasket has at least two gasket holes for connecting ring bolts. When multiple ring bolts are connected to the gasket, they can provide reverse torque support to prevent the gasket from rotating during the locking process and damaging the guide post.

[0008] Optionally, the bottom of the gasket is provided with a slot for fixing the nut.

[0009] Optionally, the self-locking assembly includes a fixed frame, a rotating frame, a double torsion spring, a support pin, a pressure rod, and a trigger frame. The fixed frame and the rotating frame are both U-shaped, with rings at both ends of the U-shaped openings. The fixed frame is located inside the rotating frame, and the rings on the fixed frame and the rotating frame pass through a hinge shaft. The bottom of the fixed frame is connected to an insulating cover, and the bottom of the rotating frame is connected to an insulating cover via a telescopic rod. The double torsion spring includes a torsion frame and a pair of torsion spring bodies disposed at both ends of the torsion frame. The outer ends of the torsion spring bodies are provided with torsion bars. The pair of torsion spring bodies are sleeved on the hinge shaft and located between a pair of rings of the fixed frame. The torsion frame abuts against the fixed frame, and the pair of torsion bars abut against both ends of the rotating frame respectively. The trigger frame includes a U-shaped pressure ring and rings at both ends of the pressure ring. The outer end of the ring is provided with a trigger rod. A pair of rings are sleeved on the hinge shaft and located between a pair of torsion spring bodies. The pressure ring and the pair of trigger rods are respectively located outside the U-shaped opening of the rotating frame. One end of the support pin is connected to the bottom of the fixed frame, and the other end is used to connect to the pressure rod. One end of the pressure rod is located above the bottom of the rotating frame, and the other end extends into the pressure ring.

[0010] Optionally, guide grooves are provided on both sides of the gasket, and the guide grooves are fitted onto the guide post; the gasket slides along the guide post through the cooperation of the guide grooves and the guide post.

[0011] Optionally, one side of the wire clamp cover is provided with a plurality of downwardly curved first claws along the clamping direction, and the corresponding side of the wire clamp body is provided with a plurality of upwardly curved second claws along the clamping direction; after the wire clamp body and the wire clamp cover clamp the wire, the plurality of first claws and the plurality of second claws engage with each other.

[0012] Optionally, sealing support portions are fixedly connected to both ends of the insulating cover and the insulating cover; a first sealing gasket for clamping the wire insulation is provided between the insulating cover and the insulating cover, the first sealing gasket being a tapered hole elastic washer to adapt to different wire diameters; after the wire clamp body and the wire clamp cover clamp the wire, the insulating cover covers the insulating cover, and the first sealing gasket and the sealing support portion are in contact.

[0013] Optionally, a guide lever is also included, located at the closed end of the wire clamp and / or insulating cover. As the wire clamp and / or insulating cover rotate, the guide lever moves the wire and guides it into the arc-shaped toothed groove, preventing unreliable connection and locking caused by wire misalignment.

[0014] Optionally, the end of the ring bolt is tapered to facilitate its smooth passage through the clamp cap and gasket hole.

[0015] Optionally, the bypass clamp for uninterrupted power supply work further includes: The grounding part extends outward from the clamp body, and a grounding ring is installed on the grounding part; An insulating plate is disposed on the side of the insulating cover facing the grounding ring, and a water-blocking edge is provided around the insulating plate; A grounding ring cover is fitted onto the insulating plate, enclosing the grounding ring therein; The grounding ring cover has a second sealing gasket fitted on its mating surface, and the grounding ring cover is fitted onto the insulating plate, with the second sealing gasket and the insulating plate being in contact.

[0016] In operation, the bypass clamp can be installed by a single worker using an operating rod at ground level. After the worker moves the bypass clamp to the installation position of the conductor, the conductor moves through the self-locking component. During the closing process, the insulating cover moves the clamp cover and guide rod. The guide rod guides the conductor into the arc-shaped toothed groove, and the clamp cover holds the conductor in the arc-shaped toothed groove, thus completing the accurate positioning and temporary fixation of the bypass clamp. Furthermore, this invention utilizes a spring connected at one end to the inside of the insulating cover and at the other end to a gasket. The gasket has a gasket hole. Under the closing action of the self-locking assembly, the ring bolt passes sequentially through the insulating cover, the clamp body, and the clamp cover. By rotating the operating lever, the ring bolt is screwed into the gasket hole, fixing the insulating cover, clamp body, clamp cover, and insulating cover. This design allows the clamp device to first lock and seal the insulating cover and insulating cover by cooperating with the gasket and spring when clamping wires of different diameters. Then, the distance between the clamp cover and the clamp body is adjusted to finally clamp wires of different diameters. In addition, the tapered hole elastic washer between the insulating cover and the insulating cover, which clamps the wire insulation, can also better adapt to different wire diameters. Simultaneously, the design of multiple guide posts fixed inside the insulating cover and the sliding fit of the gasket prevents the gasket from shifting position when clamping wires of different diameters. This solves the problem in existing technologies where fully insulated bypass clamps for live-line work are difficult to adapt to wires of different diameters. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 2 This is a schematic diagram of the wire clamp. Figure 3 This is a schematic diagram of the grounding part. Figure 4 This is a schematic diagram of the insulating cover section. Figure 5 This is a schematic diagram of the connection structure between the hinge shaft and the clamp body. Figure 6 This is a schematic diagram of the self-locking component. Figure 7 This is a structural diagram of the double torsion spring and trigger frame. Figure 8 This is a schematic diagram of the trigger frame. Figure 9 This is a schematic diagram of the optimized embodiment of the present invention; In the figure, 1 is the wire clamp part, 11 is the wire clamp body, 111 is the second clamping jaw, 112 is the conical elastic washer, 12 is the wire clamp cover, 121 is the first clamping jaw, 14 is the operating ring, and 15 is the hinge shaft. 2 is the insulating cover, 21 is the insulating cover base, 22 is the insulating cover, 222 is the sealing support, 23 is the insulating plate, 231 is the water-blocking edge, 24 is the first sealing gasket, and 25 is the auxiliary operating ring. 3 represents a wire; 4 is a bolt with a ring, and 41 is a washer boss; 5 is the fastener, 51 is the spring, 52 is the washer, 53 is the guide post, 54 is the fixing post, 55 is the nut, 56 is the threaded hole, 57 is the slot, 58 is the guide groove, 59 is the self-locking assembly, 591 is the fixing bracket, 592 is the rotating bracket, 593 is the support pin, 594 is the pressure rod, 595 is the trigger bracket, 5951 is the pressure ring, 5952 is the ring body, 5953 is the trigger lever, 596 is the circular ring, and 597 is the telescopic rod. 510 is a double torsion spring, 5101 is a torsion frame, 5102 is the torsion spring body, and 5103 is a torsion bar. 6 is the grounding part, and 61 is the grounding ring groove; 7 is the grounding ring; 8 is the grounding ring cover, and 81 is the second sealing gasket; 9 is a pressing block; 10 is the guide lever. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0019] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0020] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0021] Please see Figure 1The present invention provides a quick-installation wire clamp device for uninterrupted power distribution network operation, including a wire clamp part 1 and an insulating cover part 2. The wire clamp part 1 clamps a conductor 3 and has an arc-shaped toothed groove for clamping the conductor 3. The toothed groove (i.e., the groove for clamping the conductor) enables the wire clamp part 1 to stably clamp the conductor 3 and provide more contact area to reduce contact resistance. The insulating cover part 2 covers the wire clamp part 1. The wire clamp also includes a ring bolt 4 and a fastening part 5.

[0022] like Figure 1 and Figure 4 As shown, the clamp part 1 includes a clamp body 11 and a clamp cover 12, which are hinged together by a hinge shaft 15 and arranged opposite to each other; the insulating cover part 2 includes an insulating cover base 21 and an insulating cover 22, which are hinged together and arranged opposite to each other, with the hinge shaft located inside the insulating cover base; after the clamp body 11 and the clamp cover 12 clamp the wire 3, the insulating cover 22 covers the insulating cover base 21.

[0023] The hinge shaft is provided with self-locking components at both ends of the wire clamp, and the self-locking components are used to drive the insulating cover to close towards the insulating cover seat. The fastening part 5 is located inside the insulating cover 22 and includes: like Figure 4 The spring 51 shown has one end connected to the inside of the insulating cover 22 and the other end abutting against the washer 52. The washer 52 has a washer hole. The ring bolt 4 passes through the insulating cover 21, the clamp body 11 and the clamp cover 12 in sequence and is screwed into the washer hole to fix the insulating cover 21, the clamp body 11, the clamp cover 12 and the insulating cover 22. This structural design allows the clamp device to adjust the distance between the clamp cover 12 and the clamp body 11 in a timely manner by cooperating with the washer 52 and the spring 51 when clamping wires 3 of different diameters, so as to complete the clamping of wires 3 of different diameters.

[0024] It should be noted that when clamping the wire 3, the pad 52 and the wire clamp cover 12 fit together. Therefore, the side of the pad 52 facing the wire clamp cover 12 is designed to conform to the shape of the outside of the wire clamp cover 12. In this embodiment, an arc shape is adopted.

[0025] like Figure 4 The multiple guide posts 53 shown are fixed inside the insulating cover 22, located on both sides of the gasket 52, with the gasket 52 and the guide posts 53 in sliding engagement. This structural design ensures that the gasket 52 will not deviate from its position when locking wires 3 of different diameters. This solves the problem in the prior art where fully insulated bypass (grounding) clamps for live-line work are difficult to adapt to wires 3 of different diameters, and the clamping part of the clamp is prone to loosening when clamping wires 3 of different diameters. In specific applications, "multiple" includes at least two.

[0026] In another implementation, please refer to Figure 4 The fastening part 5 also includes a fixing post 54, which is fixed inside the insulating cover 22; one end of the spring 51 is tightly snapped and fixed above the fixing post 54 and connected to the inside of the insulating cover 22; the structural form of this embodiment ensures the stability of the spring 51 installation.

[0027] In another implementation, please refer to Figure 4 The fastening part 5 also includes a nut 55; the other end of the spring 51 is connected and fixed to the bottom end of the nut 55, which can be welded or snapped; the top end of the nut 55 abuts against the washer 52; the hole on the nut 55 and the washer hole of the washer 52 are connected with the same diameter and form a threaded hole 56, so there is no need to tap the washer; the ring bolt 4 passes through the insulating cover 21, the clamp body 11 and the clamp cover 12 in sequence, and then screws into the entire threaded hole 56, fixing the insulating cover 21, the clamp body 11, the clamp cover 12 and the insulating cover 22; ensuring that the washer 52 can move stably when the clamp device clamps wires 3 of different diameters, making the clamp cover 12 and the clamp body 11 clamp the wires 3 more reliably.

[0028] In another embodiment, the gasket hole is tapered to facilitate the smooth insertion of the end of the ring bolt 4 into the gasket hole during installation and tightening.

[0029] In another implementation, please refer to Figure 4 The bottom of the washer 52 is provided with a groove 57 for fixing the nut 55, ensuring that the nut 55 does not rotate when the ring bolt 4 is tightened. Only one tool is needed to tighten the ring bolt 4, reducing labor intensity, which is especially convenient when working at height. The preferred method is that the depth and width of the groove 57 simultaneously engage and fix the two sides and two end faces of the nut.

[0030] In another implementation, please refer to Figure 4 The gasket 52 has guide grooves 58 on both sides, and the guide grooves 58 are fitted onto the guide post 53; the gasket 52 slides along the guide post 53 through the cooperation of the guide grooves 58 and the guide post 53; this further ensures the stability of the gasket 52 when it slides.

[0031] In another implementation, please refer to Figure 2The wire clamp cover 12 has multiple downwardly curved first claws 121 on one side along the clamping direction, and the corresponding wire clamp body 11 has multiple upwardly curved second claws 111 on the same side along the clamping direction. After the wire clamp body 11 and the wire clamp cover 12 clamp the wire 3, the multiple first claws 121 and the multiple second claws 111 are engaged together. At the same time, the clamping side of the wire clamp cover 12 is provided with an arc-shaped toothed groove for accommodating the wire, which is adjacent to the first claws 121. The clamping side of the wire clamp body 11 is also provided with an arc-shaped toothed groove for accommodating the wire, which is adjacent to the second claws 111. This ensures the reliability of the wire clamp device when clamping the wire 3. In another implementation, please refer to Figure 2 The insulating cover 22 also has a wire clamp sealing gasket and a sealing gasket groove for fixing and compressing the wire clamp sealing gasket on its mating surface, so as to achieve better sealing of the mating surfaces of the insulating cover 21 and the insulating cover 22. Sealing support portions 222 are also provided at both ends of the insulating cover 21 and the insulating cover 22, and a first sealing gasket 24 for clamping the wire insulation is provided between the sealing support portions. The first sealing gasket 24 is a tapered-hole elastic washer to accommodate different wire diameters. Specifically, the tapered-hole elastic washer has annular portions of different diameters on its inner side. The annular portion of the appropriate diameter is selected to be retained according to the diameter of the wire 3, so that the first sealing gasket 24 and the wire 3 fit tightly together to ensure waterproofing. For example, when it is necessary to clamp a larger diameter wire 3, the annular portion of the first sealing gasket 24 smaller than the diameter of the wire 3 is removed first, and then the wire 3 is clamped. The first sealing gasket 24 is divided into two parts and is respectively set in the sealing support portion 222 of the insulating cover 21 and the insulating cover 22. After the wire clamp body 11 and the wire clamp cover 12 clamp the wire 3, the insulating cover 22 covers the insulating cover 21, and the first sealing gasket 24 and the sealing support portion 222 fit together. When the ring bolt 4 locks the entire wire clamp, the first sealing gasket 24 is compressed, resulting in better waterproofing.

[0032] In another implementation, please refer to Figure 5-9 The self-locking assembly 59 includes a fixed frame 591, a rotating frame 592, a double torsion spring 510, a support pin 593, a pressure rod 594, and a trigger frame 595. The fixed frame 591 and the rotating frame 592 are both U-shaped, and each of the two ends of the U-shaped opening of the fixed frame 591 and the rotating frame 592 is provided with a ring 596. The fixed frame 591 is located inside the rotating frame 592, and the rings 596 on the fixed frame and the rotating frame pass through the hinge shaft 15. The bottom of the fixed frame 591 is connected to the insulating cover 21, and the bottom of the rotating frame 592 is connected to the insulating cover 22 via the telescopic rod 597. The double torsion spring 510 includes a torsion frame 5101 and a pair of torsion spring bodies 5102 disposed at both ends of the torsion frame. The outer ends of the torsion spring bodies are provided with torsion bars 5103. The pair of torsion spring bodies 5102 are sleeved on the hinge shaft 15 and located between a pair of rings of the fixed frame. The torsion frame 5101 abuts against the fixed frame 591, and the pair of torsion bars 5103 abut against both ends of the rotating frame 592 respectively. The trigger frame 595 includes a U-shaped pressure ring 5951 and ring bodies 5952 disposed at both ends of the pressure ring. The outer ends of the ring bodies are provided with trigger levers 5953. A pair of ring bodies 5952 are sleeved on the hinge shaft 15 and located between a pair of torsion spring bodies 5102. The pressure ring 5951 and the pair of trigger levers 5953 are respectively located outside the U-shaped opening of the rotating frame 592. The trigger levers 5953 are located on the axis where the arc-shaped toothed groove is located. One end of the support pin 593 is connected to the bottom of the fixing frame 591, and the other end is used to connect to the pressure rod 594. One end of the pressure rod 594 is located above the bottom of the rotating frame 592, and the other end extends into the pressure ring 5951.

[0033] During installation, open the insulating cover 22 and the wire clamp cover 12 to the set position, rotate the rotating frame 592 to the corresponding position, put the pressure rod 594 into the pressure ring 5951, fix the wire clamp operating ring 14 with the insulating operating rod, and hang the wire 3; when the wire to be installed touches the trigger rod 5953 of the self-locking component 59, the pressure rod 594 will fall off, at which time the rotating frame 592 will rotate, and the telescopic rod 597 will drive the insulating cover 22 to close, and the wire clamp cover 12 will also close at the same time; then, tighten the ring bolt 4, at which time the insulating cover 22 will be locked tighter under the action of the spring 51, and the installation can be completed.

[0034] The self-locking component 59 is provided to facilitate the installation of the insulating cover 2 and the wire clamp 1, which greatly reduces the labor intensity, and is especially convenient for high-altitude operations.

[0035] In application, an auxiliary operating ring 25 can be set on the insulating cover 22. When it is necessary to open the insulating cover 2 for maintenance or other work, simply loosen the ring bolt 4, apply the insulating operating rod to the auxiliary operating ring 25, and push upward to open the insulating cover.

[0036] It also includes a guide lever 10, which is located at the closing end of the wire clamp portion 1 and / or the insulating cover portion 2. During the rotation and locking process of the wire clamp cover 12 and / or the insulating cover 22, the guide lever 10 moves the wire 3 into the arc-shaped toothed groove, avoiding unreliable connection and locking caused by misalignment of the wire 3.

[0037] In another implementation, please refer to Figure 2A tapered elastic washer 112 is provided at the position where the ring bolt 4 enters the clamp body 11, and a washer boss 41 is provided at the corresponding position of the ring bolt 4; this structural design effectively compensates for stress relaxation when the ring bolt 4 is tightened; at the same time, in order to ensure operational safety, the ring part of the ring bolt 4 is made of solid insulating material.

[0038] In another embodiment, the end of the ring bolt 4 is tapered to facilitate its smooth passage through the slightly tilted clamp cap 12 and gasket hole when not locked.

[0039] In another embodiment, the wire clamp device further includes: like Figure 1 and Figure 3 The grounding part 6 shown is extended from the clamp body 11. A grounding ring 7 is installed on the grounding part 6, thereby enabling the clamp device to have a grounding function.

[0040] like Figure 3 The insulating plate 23 shown is disposed on the side of the insulating cover 2 facing the grounding ring 7, and a water-blocking edge 231 is provided around the insulating plate 23.

[0041] like Figure 3 The grounding ring cover 8 shown covers the insulating plate 23 and encloses the grounding ring 7 therein; the covering surface of the grounding ring cover 8 is fitted with a second sealing gasket 81, and the grounding ring cover 8 covers the insulating plate 23, with the second sealing gasket 81 and the insulating plate 23 in contact.

[0042] like Figure 1 and Figure 3 As shown, when this clamp device is used for bypass or voltage testing grounding, the grounding ring cover 8 is opened and the grounding ring 7 is used; after the operation is completed, the grounding ring cover 8 is closed, and the water-blocking edge 231 and the second sealing gasket 81 embedded on the insulating plate 23 cooperate with each other to prevent the water in the surrounding environment from having an adverse effect on the grounding ring 7, causing the grounding ring 7 to become damp; this solves the problem in the prior art that the grounding ring 7 of the bypass (grounding) clamp for fully insulated non-stop power operation is exposed to the outside, and the dampness affects the safe use of the entire clamp.

[0043] In another implementation, please refer to Figure 2 The clamp part 1 is provided with a clamp operation ring 14. When using this clamp device, the operator uses an insulated operating rod commonly used by electricians to fix the clamp operation ring 14, and then hangs the wire 3. The clamp part 1 clamps the wire 3, which increases the ease of operation of this clamp device.

[0044] In another implementation, please refer to Figure 2 and Figure 3The clamp device also includes a pressure block 9; a grounding ring groove 61 is provided on the grounding part 6, and the pressure block 9 presses the grounding ring 7 into the grounding ring groove 61 and fixes it with screws. The operator can easily install and remove the grounding ring 7 as needed.

[0045] In other implementations, such as Figure 2 As shown, the clamp body 11 and clamp cover 12 are both made of aluminum alloy material through profile processing and tin-plated on the surface; they have the advantages of high strength, high conductivity and good heat resistance, and can be connected to both copper and aluminum wires.

[0046] like Figure 3 As shown, both the insulating cover 21 and the insulating cover 22 are integrally processed from reinforced plastic, which has good mechanical and electrical properties and can effectively solve problems such as excessive resistance, severe heat generation, and connection failure of traditional wire clamps.

[0047] In summary, during the installation of the bypass clamp, the operator uses an operating lever to control the clamp's operating ring 14 for fixation, then inserts the conductor 3. After the operator moves the bypass clamp to the corresponding position of the conductor 3, the conductor touches the self-locking component 59, causing the clamp cover 12 and guide lever 10 to move during the closing of the insulating cover 22. The guide lever 10 guides the conductor into the arc-shaped toothed groove, and the clamp cover 12 clamps the conductor in the arc-shaped toothed groove, completing the accurate positioning and temporary fixation of the bypass clamp. The temporary fixation and closure of the clamp part 1 and the insulating cover part 2 can be completed in one step. One end of the spring 51 is connected to the inside of the insulating cover 22, and the other end abuts against the gasket 52. The gasket 52 has a gasket hole, and the ring bolt 4 passes through the insulating cover 21, the clamp body 11, and the clamp cover 12 in sequence. The design of screwing in the gasket hole to fix the insulating cover 21, clamp body 11, clamp cover 12, and insulating cover 22 allows the clamp device to adjust the distance between the clamp cover 12 and the clamp body 11 in a timely manner through the cooperation of the gasket 52 and the spring 51 when clamping wires 3 of different diameters. One construction worker can complete the high-altitude installation of the bypass clamp on the ground using an operating rod, making installation simple and convenient. At the same time, because of the design of multiple guide posts 53 fixed inside the insulating cover 22 and the sliding cooperation of the gasket 52, the gasket 52 will not deviate from its position when locking wires 3 of different diameters. This solves the problem that the existing bypass (grounding) clamps for fully insulated uninterrupted power supply operations are difficult to adapt to wires 3 of different diameters, and the clamping part of the clamp is prone to loosening when clamping wires 3 of different diameters.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A quick-installation clamp device for live-line operation in power distribution networks, comprising a clamp part and an insulating cover part, wherein the clamp part is provided with an arc-shaped toothed groove for clamping a conductor, and the insulating cover part covers the clamp part; Its features are: It also includes ring bolts and fasteners; The wire clamp includes a wire clamp body and a wire clamp cover, which are hinged together by a hinge shaft and arranged opposite to each other. The insulating cover includes an insulating cover base and an insulating cover, which are hinged together and arranged opposite to each other, with the hinge axis located inside the insulating cover base; The hinge shaft is provided with self-locking components at both ends of the wire clamp, and the self-locking components are used to drive the insulating cover to close towards the insulating cover seat. The self-locking assembly includes a rotating frame and a trigger frame. When the installed wire touches the trigger frame of the self-locking assembly, the rotating frame rotates, which drives the insulating cover to close towards the insulating cover seat through the telescopic rod. The fastening part is disposed inside the insulating cover and includes: A spring has one end connected to the insulating cover and the other end connected to a strip-shaped washer. The washer has a washer hole. The ring bolt passes through the insulating cover, the clamp body, and the clamp cover in sequence, and then screws into the washer hole. The washer pulls the insulating cover down with the insulating cover first to lock and seal it. Then, the washer continues to press down on the clamp cover under the action of the ring bolt, and together with the clamp body, locks the wire. The guide post is fixed inside the insulating cover and located on both sides of the gasket, with the gasket and the guide post in sliding engagement.

2. The quick-installation clamp device for live-line work in power distribution networks according to claim 1, characterized in that: The fastening part also includes a fixing post and a nut. The fixing post is fixed inside the insulating cover. One end of the spring is fitted and snapped onto the fixing post, and the other end is connected to the bottom end of the nut. The top end of the nut is fixedly connected to the washer.

3. The quick-installation clamp device for live-line work in power distribution networks according to claim 2, characterized in that: The self-locking assembly also includes a fixing frame, double torsion springs, support pins, and a pressure rod. The fixed frame and the rotating frame are both U-shaped, with rings at both ends of the U-shaped openings. The fixed frame is located inside the rotating frame, and the rings on the fixed frame and the rotating frame pass through a hinge shaft. The bottom of the fixed frame is connected to an insulating cover, and the bottom of the rotating frame is connected to an insulating cover via a telescopic rod. The double torsion spring includes a torsion frame and a pair of torsion spring bodies disposed at both ends of the torsion frame. The outer ends of the torsion spring bodies are provided with torsion bars. The pair of torsion spring bodies are sleeved on the hinge shaft and located between a pair of rings of the fixed frame. The torsion frame abuts against the fixed frame, and the pair of torsion bars abut against both ends of the rotating frame respectively. The trigger frame includes a U-shaped pressure ring and rings at both ends of the pressure ring. The outer end of the ring is provided with a trigger rod. A pair of rings are sleeved on the hinge shaft and located between a pair of torsion spring bodies. The pressure ring and the pair of trigger rods are respectively located outside the U-shaped opening of the rotating frame. One end of the support pin is connected to the bottom of the fixed frame, and the other end is used to connect to the pressure rod. One end of the pressure rod is located above the bottom of the rotating frame, and the other end extends into the pressure ring.

4. The quick-installation clamp device for live-line work in power distribution networks according to claim 1, characterized in that: The gasket has guide grooves on both sides, and the guide grooves are fitted onto the guide post and slide in cooperation with it.

5. A quick-installation clamp device for live-line work in power distribution networks according to claim 1, characterized in that: The wire clamp cover has a downwardly curved first clamping claw on one side along the clamping direction, and the corresponding side of the wire clamp body has an upwardly curved second clamping claw along the clamping direction. After the wire clamp body and the wire clamp cover hold the wire, the first clamp and the second clamp engage with each other.

6. The quick-installation clamp device for live-line work in power distribution networks according to claim 1, characterized in that: The insulating cover and the insulating cover are fixedly connected to sealing support parts at both ends; a first sealing gasket for clamping wire insulation is provided between the insulating cover and the insulating cover; after the insulating cover is closed on the insulating cover, the first sealing gasket and the sealing support parts are in contact.

7. The quick-installation clamp device for live-line work in power distribution networks according to claim 1, characterized in that: It also includes a guide lever located at the cover end of the wire clamp and / or the insulating cover.

8. A quick-installation clamp device for live-line work in power distribution networks according to claim 1, characterized in that: The end of the ring bolt is tapered.

9. A quick-installation clamp device for live-line work in power distribution networks according to claim 1, characterized in that: Also includes: The grounding part extends outward from the clamp body, and a grounding ring is installed on the grounding part; An insulating plate is disposed on the side of the insulating cover facing the grounding ring, and a water-blocking edge is provided around the insulating plate; A grounding ring cover is fitted onto the insulating plate, enclosing the grounding ring therein; The grounding ring cover has a second sealing gasket fitted on its mating surface. When the grounding ring cover is closed on the insulating plate, the second sealing gasket and the insulating plate are in contact.

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