Telescopic insulating holding operating tool for power distribution live working

Abstract

The application relates to the technical field of power maintenance, and particularly provides a telescopic insulation clamping operation tool for power distribution live working, which comprises isolation covers, telescopic rods and fixing members, the number of the isolation covers is three, the isolation cover comprises two subparts arranged opposite to each other, the subpart comprises a side stop, a fixed bottom plate, a sliding bottom plate, a first elastic insulation plate and a locking member, and the fixed bottom plate is arranged on the inner side surface of the side stop. The first elastic insulation plate, the fixed bottom plate, the sliding bottom plate and the side stop are arranged, when the side stops of two adjacent isolation covers abut against each other during the installation of the three isolation covers, the first elastic insulation plate reversely pushes the fixed bottom plate to drive the side stop to move, the length of the first elastic insulation plate corresponding to the subpart, at which the side stops of the three isolation covers abut against each other, is the same, so that the size of the three isolation covers is adaptively adjusted to adapt to the current interval distance specification of the drop-out protection.

Description

Technical Field

[0001] This invention relates to the field of power maintenance technology, and in particular to a telescopic insulated clamping tool for live-line work in power distribution. Background Technology

[0002] In traditional live-line work in power distribution, such as when replacing drop fuses on transformer poles, it is necessary to use a combination of shielding tools such as insulated jumper shields, insulated baffles, and insulated blankets to insulate and shield the live parts and grounded parts.

[0003] However, this method is not only cumbersome and time-consuming, but also limited by factors such as the difficulty of laying insulation blankets and the limited sealing performance.

[0004] To overcome the shortcomings of the aforementioned devices, in recent years, power-related R&D personnel have designed a lead wire isolation cover to simplify construction operations.

[0005] The existing lead wire isolation cover structure is shown in Chinese invention patent application CN115632328A, entitled "A Pull-out Lead Wire Isolation Device for Replacing Drop Fuses." It utilizes a first isolation baffle, a second isolation baffle, and a base plate to form an effective safe operating space. The device is secured to the ceramic component of the drop fuse via a slot on the base plate, and simultaneously secured to the crossarm via a U-shaped slot on the support plate. Because this device is fixed by a pull-out mechanism, it avoids the cumbersome and time-consuming operation of conventional methods for replacing drop fuses while the circuit is energized.

[0006] However, such devices still have the following drawbacks in current use: due to various factors such as electrical insulation safety, equipment mechanical compatibility, operation and maintenance safety, and environmental adaptability, the spacing between the near-side, middle-side, and far-side phases of the drop-out fuse has various specifications during installation (for example, the standard phase spacing requirement for a 10kV system is greater than 70cm, the standard phase spacing requirement for a 35kV system is greater than 80cm, and after the altitude exceeds 1000 meters, the spacing needs to be increased by about 1% on the basis of the standard phase spacing for every 100 meters increase in altitude). Different phase spacings require lead wire isolation covers of corresponding sizes. However, most existing lead wire isolation covers are made of integrally molded insulation materials, so they cannot adapt to various standard phase spacing requirements. Summary of the Invention

[0007] Therefore, it is necessary to provide a telescopic insulating clamping tool for live-line work in power distribution, which addresses the problems existing in current lead wire isolation covers and solves the problem that existing lead wire isolation covers cannot adapt to various standard phase-to-phase spacing requirements.

[0008] The above objectives are achieved through the following technical solutions:

[0009] A telescopic insulated clamping tool for live-line work in power distribution includes:

[0010] The isolation cover has three components, each including two opposing sub-components. Each sub-component includes a side guard, a fixed base plate, a sliding base plate, a first elastic insulating plate, and a locking element. The fixed base plate is located on the inner side of the side guard, and the first elastic insulating plate is located on the side of the fixed base plate away from the side guard. The sliding base plate is fixedly connected to the side of the first elastic insulating plate away from the fixed base plate, and the first elastic insulating plate is configured to prevent the sliding base plate from approaching the fixed base plate. The locking element is used to restrict the sliding base plate from sliding relative to the fixed base plate.

[0011] A slot is provided on the side of the sliding base plate away from the first elastic insulating plate;

[0012] The telescopic rods are horizontal in axis, and there are at least two of them, which are arranged at intervals between each other, and the two ends of the telescopic rods are fixed to two side stops respectively.

[0013] Fasteners are used to secure the isolation cover.

[0014] Furthermore, the sub-section also includes two side stops, which are respectively set at both ends of the side stop in the length direction, and the two side stops provide sliding support to the sliding base plate.

[0015] Furthermore, a second elastic insulating plate is provided between two opposing side rails located at one end of the side rail, the second elastic insulating plate being configured to prevent the two side rails from moving away from each other.

[0016] Furthermore, the locking component includes a rotating rod, a winding rope, a locking tooth, and an annular block. The rotating rod is inserted between two side stops and can rotate around and move along its axis. The winding rope is divided into multiple groups, each group consisting of two ropes. The multiple groups of winding ropes are distributed at intervals along the axis of the rotating rod. One end of each group of two winding ropes is wound in opposite directions around the rotating rod. The other end of one winding rope is fixed to the fixed base plate, and the other end of the other winding rope is fixed to the sliding base plate. The locking tooth is located on one side of the rotating rod in the circumferential direction. The annular block is located on the side stop near the locking tooth. The annular block has multiple tooth grooves spaced circumferentially, and the tooth grooves and the locking tooth can lock and engage with each other.

[0017] Furthermore, a handle is provided at one end of the lever.

[0018] Furthermore, the fixing component is a pull rod with an adjustable length, and one end of the pull rod is rotatably connected to a connector, while the other end is equipped with a hook.

[0019] Furthermore, the pull rod includes a first rod and a second rod, which are coaxial and threaded together. The first rod and the second rod are rotatably connected to the first rod, and the hook is located at the end of the second rod away from the first rod.

[0020] Furthermore, protrusions and grooves are provided at intervals along the length of the side guards on the outer surfaces of the three isolation shields, and the protrusions and grooves on the two opposing side guards are staggered.

[0021] Furthermore, a guide slope is provided on the side of the protrusion facing the groove.

[0022] Furthermore, the first and second elastic insulating boards are made of plasticized polyvinyl chloride.

[0023] The beneficial effects of this invention are:

[0024] 1. The present invention is provided with a first elastic insulating plate, a fixed base plate, a sliding base plate and side blocks. During the installation of the three isolation covers, when the side blocks of two adjacent isolation covers abut against each other, the first elastic insulating plate pushes the fixed base plate in the opposite direction to move the side blocks, so that the lengths of the first elastic insulating plates corresponding to the abutting parts of the side blocks of the three isolation covers are the same. In this way, the size of the three isolation covers is adaptively adjusted to match the current phase spacing specification of the drop insurance.

[0025] 2. The present invention is equipped with a locking component. During the installation of the isolation cover, the operator does not need to manually adjust the width of the isolation cover. They only need to disengage the locking teeth of the rotating rod from the locking groove. Under the elastic force of the first elastic insulating plate, the sliding base plate adaptively moves to be locked onto the outside of the ceramic ring. Therefore, it has high installation convenience and can significantly improve the efficiency of construction operations. Attached Figure Description

[0026] Figure 1 This is a schematic diagram illustrating the operation of a telescopic insulating clamping tool for live-line work in power distribution according to the present invention.

[0027] Figure 2 This is a schematic diagram of the combined installation of a telescopic insulating clamping operating tool for live-line work in power distribution according to the present invention;

[0028] Figure 3 This is a schematic diagram showing the individual installation of a telescopic insulating clamping tool for live-line work in power distribution according to the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of a telescopic insulating clamping tool for live-line work in power distribution according to the present invention;

[0030] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle;

[0031] Figure 6 This is a schematic diagram of the structure of a telescopic insulating clamping tool for live-line work in power distribution before installation, according to the present invention.

[0032] in:

[0033] 100. Isolation cover; 110. Sub-section; 111. Side guard; 112. Fixed base plate; 113. Sliding base plate; 1131. Slot; 114. First elastic insulating plate; 115. Locking element; 116. Side guard; 1161. Lower edge; 117. Second elastic insulating plate; 120. Protrusion; 121. Guide slope; 130. Groove;

[0034] 1151. Rotating rod; 1152. Winding rope; 1153. Clamping tooth; 1154. Ring block; 1155. Tooth groove; 1156. Handle;

[0035] 200. Telescopic pole;

[0036] 300, Pull rod; 310, First rod; 320, Second rod; 330, Connector; 340, Hook;

[0037] 400. Fall insurance;

[0038] 500. Upper crossbeam;

[0039] 600. Transformer platform pole;

[0040] 700. Lower crossbeam. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0042] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They 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 limiting the invention.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] The following reference Figures 1-6 This invention describes a telescopic insulating clamping tool for live-line work in power distribution.

[0045] This invention provides a telescopic insulated clamping tool for live-line work in power distribution, used to provide insulation shielding for live parts and grounded parts when replacing the drop fuse 400 on a transformer platform 600. Specifically, as shown... Figure 1 As shown, the drop-out fuse 400 is installed on the lower crossarm, and the lower crossarm 700 is installed on the transformer platform 600. Since the lower crossarm 700 and the transformer platform 600 are grounded, when replacing the drop-out fuse 400, it is necessary to isolate the drop-out fuse 400 from the lower crossarm 700, the transformer platform 600, and adjacent drop-out fuses using an insulated clamping tool.

[0046] A telescopic insulating clamping tool for live-line working in power distribution includes an isolation cover 100, a telescopic rod 200, and a fixing component. There are three isolation covers 100, each including two opposing sub-sections 110. Each sub-section 110 includes a side stop 111, a fixed base plate 112, a sliding base plate 113, a first elastic insulating plate 114, and a locking component 115. The fixed base plate 112 is disposed on the inner side of the side stop 111. The first elastic insulating plate 114 is disposed on the side of the fixed base plate 112 away from the side stop 111. The sliding base plate 113 is fixedly connected to the side of the first elastic insulating plate 114 away from the fixed base plate 112. The sliding base plate 113 is configured to prevent it from approaching the fixed base plate 112. The locking member 115 is used to limit the sliding base plate 113 from sliding relative to the fixed base plate 112. The sliding base plate 113 has a slot 1131 on the side away from the first elastic insulating plate 114 for engaging the ceramic ring of the drop safety 400. The axis of the telescopic rod 200 is horizontal, and there are at least two of them, which are arranged vertically and horizontally. The two ends of the telescopic rod 200 are respectively fixed to two side blocks 111. The fixing member is used to fix the isolation cover 100. Before installation, the distance between the sliding base plates 113 of the two sub-parts 110 is at its maximum value, and the elasticity of the first elastic insulating plate 114 is also at its maximum value.

[0047] Before installation, the workers compress the first elastic insulating plate 114, maximizing the elastic force of the first elastic insulating plate 114 of the two sub-parts 110. At this point, the distance between the sliding base plates 113 of the two sub-parts 110 is at its maximum, meaning the opening width between the two sliding base plates 113 is at its maximum. Finally, the sliding base plates 113 are restricted from sliding relative to the fixed base plate 112 by the locking member 115, thus putting the first elastic insulating plate 114 into a stored state. It is understandable that maximizing the opening width between the two sliding base plates 113 before installation facilitates the subsequent horizontal sliding installation of the isolation cover 100 outside the ceramic ring of the drop arrestor 400.

[0048] During installation, the workers first move the insulated bucket truck to the preset working height position. Next, they place an isolation cover 100 over the ceramic ring of the near-side drop protection 400. Then, they release the locking member 115 to restrict the movement of the sliding base plate 113 relative to the fixed base plate 112. At this time, the first elastic insulating plates 114 of the two sub-parts 110 release their elasticity, pushing the corresponding sliding base plate 113 to move towards the position of the ceramic ring until the slot 1131 on the sliding base plate 113 is engaged with the outside of the ceramic ring. At this point, the isolation cover 100 is initially fixed and installed through the limiting cooperation between the slot 1131 and the ceramic ring. Under the limiting engagement of the slot 1131 and the ceramic ring, the isolation cover 100 will not fall off the ceramic ring of the drop protection 400. However, the connection is not stable enough. Therefore, it is necessary to use fasteners to fix the telescopic rod 200 and the upper crossarm 500 on the transformer platform 600 together to reinforce the isolation cover 100. This completes the isolation and shielding of the drop protection 400 for the near-side phase.

[0049] Similarly, install the isolation covers 100 outside the drop fuses 400 corresponding to the middle phase and the drop fuses 400 corresponding to the far phase in sequence to isolate and shield the drop fuses 400 of the middle phase and the drop fuses 400 of the far phase. During the installation of the three isolation covers 100, since the sliding base plates 113 of the three isolation covers 100 are engaged with the ceramic ring through the slots 1131, the first elastic insulating plates 114 of the three isolation covers 100 will push the fixed base plate 112 in the opposite direction to the side away from the corresponding drop protection 400 under its elastic action. When they move to the side blocks 111 of the isolation covers 100 and abut against each other, under the adaptive adjustment of the elastic force of the first elastic insulating plates 114, the elastic force of the first elastic insulating plates 114 corresponding to the abutting side blocks 111 is the same, that is, the length of the first elastic insulating plates 114 is the same at this time. This ensures that the three isolation covers 100 are basically the same size (the isolation covers 100 installed for the drop protection 400 of the near-side phase and the far-side phase are slightly larger, while the isolation covers 100 installed for the drop protection 400 of the middle phase are slightly smaller), thereby achieving adaptive adaptation to the installation requirements of drop protection 400 of different specifications.

[0050] It is understandable that the purpose of setting the telescopic rod 200 is to connect the side blocks 111 of the two sub-parts 110 together, so that the two sub-parts 110 form a whole. In addition, the length variation of the telescopic rod 200 is to adaptively adapt to the size adjustment of the isolation cover 100.

[0051] It should be noted that the two sliding base plates 113 of the isolation cover 100 are staggered vertically and slide in contact. The purpose is to allow the two sliding base plates 113 to slide relative to each other, so that the slots 1131 on them form an approximately circular hole for engaging the ceramic ring, so as to fit snugly against the outside of the ceramic ring, reduce the air gap between the sliding base plate 113 and the ceramic ring, and thus improve the insulation and shielding effect.

[0052] In a further embodiment, such as Figure 4 and Figure 6 As shown, the sub-part 110 also includes two side stops 116, which are respectively disposed at both ends of the side stop 111 in the length direction, and the two side stops 116 provide sliding support for the sliding base plate 113.

[0053] Specifically, such as Figure 6 As shown, the side rail 116 has a lower edge 1161, and the sliding base plate 113 is slidably connected to the upper surface of the lower edge 1161, thereby forming a sliding support for the sliding base plate 113 through the lower edge 1161 of the side rail 116.

[0054] It should also be noted that the two side panels 116 of the isolation cover 100 should be installed at a certain distance with their heights offset to accommodate the offset installation of the two sliding base plates 113.

[0055] In a further embodiment, such as Figure 3 As shown, a second elastic insulating plate 117 is provided between two opposing side rails 116 located at one end of the side rail 111. The second elastic insulating plate 117 is configured to prevent the two side rails 116 from moving away from each other.

[0056] The purpose of setting the second elastic insulating plate 117 is to connect the two side blocks 116 at the non-open end together to enhance the connection strength of the two sub-parts 110 of the isolation cover 100, and at the same time adapt to the spacing adjustment between the fixed base plates 112 of the two sub-parts 110.

[0057] Specifically, the first elastic insulating plate 114 and the second elastic insulating plate 117 are made of plasticized polyvinyl chloride. The reason for this is that plasticized polyvinyl chloride can meet the requirements of electrical isolation, achieve mechanical expansion and contraction, and is also easy to mass-produce and has a low cost.

[0058] In a further embodiment, such as Figure 4 and Figure 5As shown, the locking component 115 includes a rotating rod 1151, a winding rope 1152, a locking tooth 1153, and an annular block 1154. The rotating rod 1151 is inserted between two side stops 116 and can rotate around its axis and move along its axis. The winding rope 1152 is divided into multiple groups, with two ropes in each group. The multiple groups of winding ropes 1152 are distributed at intervals along the axis of the rotating rod 1151. One end of the two winding ropes 1152 in each group is wound in opposite directions around the rotating rod 1151. On the upper part, one end of one winding rope 1152 is fixed to the fixed base plate 112, and the other end of the other winding rope 1152 is fixed to the sliding base plate 113. The locking teeth 1153 are set on one side of the rotating rod 1151 in the circumferential direction. The annular block 1154 is set on the side stop 116 near the locking teeth 1153. The annular block 1154 is provided with multiple tooth grooves 1155 in the circumferential direction. The tooth grooves 1155 and the locking teeth 1153 can lock and engage with each other.

[0059] The two winding ropes 1152 are wound in opposite directions around the rotating rod 1151. Specifically, one of the two winding ropes 1152 is wound clockwise around the rotating rod 1151, and the other is wound counterclockwise around the rotating rod 1151. In this way, when the rotating rod 1151 is rotated, the two winding ropes 1152 can be wound up or unwound simultaneously.

[0060] Before installation, the operator first moves the rotating rod 1151 axially, causing the locking teeth 1153 and the tooth grooves 1155 to be misaligned along the axial direction of the rotating rod 1151. Then, the operator rotates the rotating rod 1151, causing the two winding ropes 1152 to be wound onto the rotating rod 1151. At this time, the ends of the two winding ropes 1152 away from the rotating rod 1151 pull the fixed base plate 112 and the sliding base plate 113 respectively, causing the sliding base plate 113 to move closer to the fixed base plate 112, thereby compressing the first elastic insulating plate 114 located between the sliding base plate 113 and the fixed base plate 112. When the first elastic insulating plate 114 is compressed to the point where it is difficult to rotate the rotating rod 1151, the rotating rod 1151 is moved axially again, engaging the locking teeth 1153 into the tooth grooves 1155 at the appropriate positions, thus keeping the first elastic insulating plate 114 in a stored state.

[0061] After the isolation cover 100 is placed outside the ceramic ring of the drop safety 400, the operator moves the rotating rod 1151 axially, causing the locking teeth 1153 to disengage from the tooth groove 1155. At this time, under the elastic force of the first elastic insulating plate 114, the first elastic insulating plate 114 elastically extends, pushing the sliding base plate 113 to move towards the side where the ceramic ring of the drop safety 400 is located, until the locking groove 1131 on the sliding base plate 113 is engaged with the outside of the ceramic ring.

[0062] After the length of the first elastic insulating plate 114 of the three isolation covers 100 no longer changes, the staff moves the rotating rod 1151 axially so that the locking teeth 1153 are engaged in the tooth groove 1155 at the appropriate position.

[0063] Understandably, during the above installation process, the staff does not need to manually adjust the width of the isolation cover 100. They only need to disengage the locking teeth 1153 of the rotating rod 1151 from the locking groove 1131. Under the elastic force of the first elastic insulating plate 114, the sliding base plate 113 adaptively moves to be locked to the outside of the ceramic ring. Therefore, it has high installation convenience and can significantly improve the efficiency of construction work.

[0064] In a further embodiment, such as Figure 5 As shown, a handle 1156 is provided at one end of the rotating rod 1151.

[0065] The purpose of the handle 1156 is to make it easier for the staff to grip the handle 1156 and rotate the lever 1151.

[0066] In a further embodiment, such as Figure 4 As shown, a telescopic insulating clamping tool for live-line work in power distribution also includes a pull rod 300. The length of the pull rod 300 is adjustable, and one end of the pull rod 300 is rotatably connected to a connector 330, while the other end is provided with a hook 340.

[0067] The connector 330 is used to fix the telescopic rod 200, and the hook 340 is used to connect the upper crossbeam to reinforce the isolation cover 100 and prevent the isolation cover 100 from tilting downward.

[0068] In a further embodiment, such as Figure 4 As shown, the pull rod 300 includes a first rod 310 and a second rod 320. The first rod 310 and the second rod 320 are coaxial and threaded together. The connector 330 is rotatably connected to the first rod 310. The hook 340 is located at the end of the second rod 320 away from the first rod 310.

[0069] After the length of the first elastic insulating plate 114 of the three isolation covers 100 no longer changes, the workers fix the connector 330 to the telescopic rod 200, and then rotate the first rod 310 to extend the pull rod 300 formed by the threads of the first rod 310 and the second rod 320 until the hook 340 is connected to the upper crossbeam 500.

[0070] In a further embodiment, such as Figure 4 As shown, protrusions 120 and grooves 130 are provided at intervals along the length direction of the side blocks 111 corresponding to the three isolation covers 100. The protrusions 120 and grooves 130 on the two opposing side blocks 111 are staggered.

[0071] The purpose of providing the protrusion 120 and the groove 130 is to limit the three isolation covers 100 to each other through the snap-fit ​​of the protrusion 120 and the groove 130, so as to increase the stability of the isolation cover 100 after installation.

[0072] In a further embodiment, the protrusion 120 has a guide slope 121 on the side facing the groove 130.

[0073] The protrusion 120 has a guide slope 121 on the side facing the groove 130. This is so that during the process of the first elastic insulating plate 114 pushing the fixed base plate 112 and the side block 111 to move, the protrusion 120 and the groove 130 can be smoothly engaged together through the guiding cooperation of the guide slope 121.

[0074] The specific working process of the telescopic insulating clamping tool for live-line working in power distribution provided by the present invention will be described in conjunction with the above embodiments:

[0075] Before installation, the operator moves the rotating rod 1151 axially to misalign the locking teeth 1153 and the tooth groove 1155 along the axial direction of the rotating rod 1151. Then, the operator rotates the rotating rod 1151 to simultaneously wind up the two winding ropes 1152 wound in opposite directions on the rotating rod 1151, pulling the fixed base plate 112 and the sliding base plate 113 closer to each other, compressing the first elastic insulating plate 114 to a stored state. Subsequently, the operator moves the rotating rod 1151 axially to engage the locking teeth 1153 in the tooth groove 1155, keeping the first elastic insulating plate 114 in a stored state.

[0076] During installation, workers ride an insulated bucket truck to the preset working height, and then slide an isolation cover 100 onto the outside of the ceramic ring of the near-side phase drop protection 400 in a horizontal sliding manner. Next, the workers axially move the rotating rod 1151 to disengage the locking teeth 1153 from the tooth groove 1155. At this time, the first elastic insulating plate 114 elastically extends, pushing the sliding base plate 113 to move towards the side where the ceramic ring is located, until the locking groove 1131 is engaged with the outside of the ceramic ring.

[0077] Next, following the same steps, the other two isolation shields 100 are respectively fitted onto the ceramic rings of the mid-phase and far-phase drop protection 400 and initially fixed.

[0078] After the three isolation covers 100 are installed, under the elastic action of the first elastic insulating plate 114 of each isolation cover 100, the fixed base plate 112 and the side guards 111 are pushed in the opposite direction and moved away from the corresponding drop protection 400. When the side guards 111 of adjacent isolation covers 100 abut against each other, under the adaptive adjustment of the elastic force of the first elastic insulating plate 114, the elastic force and length of the first elastic insulating plate 114 corresponding to the abutting side guards 111 are the same, so that the three isolation covers 100 are basically the same size (the isolation covers 100 of the near-side phase and the far-side phase are slightly larger, and the isolation cover 100 of the middle phase is slightly smaller), so as to achieve adaptive adaptation to the installation requirements of drop protection 400 of different specifications. During this process, the second elastic insulating plate 117 located between the end side plates 116 of the side plate 111 is adapted to adjust the spacing between the fixed base plates 112 of the two sub-parts 110, thereby enhancing the connection firmness of the isolation cover 100. At the same time, the protrusions 120 and grooves 130 on the outer side surfaces of the side plates 111 of the adjacent isolation covers 100 are smoothly engaged with each other under the guidance of the guide slope 121, forming a limiting fit and increasing the stability of the isolation cover 100 after installation.

[0079] After the length of the first elastic insulating plate 114 of the three isolation covers 100 is stable, the workers fix the connector 330 at one end of the pull rod 300 to the telescopic rod 200, and then rotate the first rod 310 to make the threads of the first rod 310 and the second rod 320 extend until the hook 340 at the other end is connected to the upper crossbeam 500, thereby achieving reinforcement and support for the isolation cover 100.

[0080] After the fall arrestor 400 is replaced, the isolation cover 100 can be removed one by one.

[0081] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A telescopic insulated clamping tool for live-line working in power distribution, characterized in that, include: The isolation cover has three components, each including two opposing sub-components. Each sub-component includes a side guard, a fixed base plate, a sliding base plate, a first elastic insulating plate, and a locking element. The fixed base plate is located on the inner side of the side guard, and the first elastic insulating plate is located on the side of the fixed base plate away from the side guard. The sliding base plate is fixedly connected to the side of the first elastic insulating plate away from the fixed base plate, and the first elastic insulating plate is configured to prevent the sliding base plate from approaching the fixed base plate. The locking element is used to restrict the sliding base plate from sliding relative to the fixed base plate. A slot is provided on the side of the sliding base plate away from the first elastic insulating plate; The telescopic rods are horizontal in axis, and there are at least two of them, which are arranged at intervals between each other, and the two ends of the telescopic rods are fixed to two side stops respectively. Fasteners are used to secure the isolation cover.

2. The telescopic insulated clamping tool for live-line work in power distribution according to claim 1, characterized in that, The sub-section also includes two side stops, which are respectively set at both ends of the side stop in the length direction, and the two side stops provide sliding support to the sliding base plate.

3. The telescopic insulated clamping tool for live-line work in power distribution according to claim 2, characterized in that, A second elastic insulating plate is provided between two opposing side rails located at one end of one side rail, and the second elastic insulating plate is configured to prevent the two side rails from moving away from each other.

4. A telescopic insulated clamping tool for live-line work in power distribution according to claim 2, characterized in that, The locking mechanism includes a rotating rod, a winding rope, locking teeth, and an annular block. The rotating rod is inserted between two side stops and can rotate and move around its axis. The winding rope is divided into multiple groups, each group consisting of two ropes. The multiple groups of winding ropes are distributed at intervals along the axis of the rotating rod. One end of each group of two winding ropes is wound in opposite directions around the rotating rod. The other end of one winding rope is fixed to the fixed base plate, and the other end of the other winding rope is fixed to the sliding base plate. The locking teeth are located on one side of the rotating rod in the circumferential direction. The annular block is located on the side stop near the locking teeth. The annular block has multiple grooves spaced circumferentially, and the grooves and locking teeth can lock and engage with each other.

5. A telescopic insulated clamping tool for live-line work in power distribution according to claim 4, characterized in that, A handle is provided at one end of the lever.

6. A telescopic insulated clamping operating tool for live-line work in power distribution according to claim 1, characterized in that, The fixing component is a pull rod with an adjustable length. One end of the pull rod is rotatably connected to a connector, and the other end is equipped with a hook.

7. A telescopic insulated clamping operating tool for live-line work in power distribution according to claim 6, characterized in that, The pull rod includes a first rod and a second rod, which are coaxial and threaded together. The connector is rotatably connected to the first rod, and the hook is located at the end of the second rod away from the first rod.

8. A telescopic insulated clamping tool for live-line work in power distribution according to claim 1, characterized in that, The outer surfaces of the side barriers corresponding to the three isolation shields are provided with protrusions and grooves at intervals along the length of the side barriers, and the protrusions and grooves on the two opposing side barriers are staggered.

9. A telescopic insulated clamping operating tool for live-line work in power distribution according to claim 8, characterized in that, A guide slope is provided on the side of the protrusion facing the groove.

10. A telescopic insulated clamping tool for live-line work in power distribution according to claim 3, characterized in that, The first and second elastic insulation boards are made of plasticized polyvinyl chloride.

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