阅读说明：本技术 一种用于农配网线路绝缘化改造的接地装置 (A earthing device for insulating transformation of farming distribution network line ) 是由 张翼翔 韩流 姚敦顺 王远飞 刘张 汪振耀 李元武 吴萍 章义恩 钱新 于 2021-08-16 设计创作，主要内容包括：本发明涉及输配电设施领域,具体涉及一种用于农配网线路绝缘化改造的接地装置,其包括用于夹持线缆的夹子,夹子的夹口内侧设置有刀具,刀具用于在夹口闭合过程中割破夹口所夹持的线缆的绝缘层并与导电内芯接触,刀具通过接地线与大地电性相连。通过采用上述方案,能够根据需要较为方便地在绝缘线路作业地点的两端任意位置实施接地。(The invention relates to the field of power transmission and distribution facilities, in particular to a grounding device for insulation transformation of a rural distribution network line. By adopting the scheme, the grounding can be conveniently implemented at any position of two ends of an insulated line operation site as required.)

1. The grounding device for the insulation transformation of the rural distribution network line is characterized by comprising a clamp for clamping a cable, wherein a cutter (11) is arranged on the inner side of a clamping opening (12) of the clamp, the cutter (11) is used for cutting an insulation layer of the cable clamped by the clamping opening (12) in the closing process of the clamping opening and is in contact with a conductive inner core, and the cutter (11) is electrically connected with the ground through a grounding wire; the cutting edge parts of the cutters (11) are arranged to be circular arc-shaped or V-shaped, and circular arc-shaped or V-shaped notches of the two cutters (11) face each other respectively.

2. The grounding device for the insulation transformation of the agricultural distribution network line according to claim 1, wherein the clamp comprises two clamping pieces (10) which are oppositely arranged, the two clamping pieces (10) are movably assembled on the support frame (30) along the direction of opposite movement, and the direction of opposite movement of the two clamping pieces (10) is consistent with the radial direction of the cable clamped in the clamping opening (12); the opposite sides of the two clamping pieces (10) are respectively provided with a cutter (11); the clamp is connected with a clamp opening adjusting component (20) for adjusting the opening and closing state of the clamp opening (12).

3. The grounding device for the insulation transformation of the agricultural distribution network line according to claim 2, wherein one or both of the two clamping members (10) are slidably fitted on the support frame (30) along the direction of the opposite movement, the clamping opening adjusting assembly (20) comprises two oppositely arranged connecting rods (21) and a push-pull member (22) positioned between the two connecting rods (21), one ends of the two connecting rods (21) close to each other are respectively hinged with the push-pull member (22), one ends of the two connecting rods (21) far away from each other are respectively hinged with the two clamping members (10), and the push-pull member (22) is moved along the direction of the cable moving into the clamping opening (12) to enable the two clamping members (10) to approach/move away from each other.

4. The grounding device for the insulation transformation of the agricultural distribution network line according to claim 3, further comprising an insulating rod (23), wherein one end of the insulating rod (23) is connected with the push-pull piece (22), and the other end of the insulating rod (23) penetrates through the support frame (30) in the direction away from the clamping piece (10) and forms a handle for people to operate; the length direction of the insulating rod (23) is consistent with the moving direction of the push-pull piece (22); a guide sleeve (24) is coaxially arranged outside the insulating rod (23), one end of the guide sleeve (24) is fixedly connected with the support frame (30), and the other end of the guide sleeve (24) is arranged close to the handle; the push/pull handle moves along the length direction of the insulating rod (23) relative to the guide sleeve (24) so that the two clamping pieces move close to each other; an elastic reset piece (50) is arranged between the support frame (30) and the clamping pieces (10), and the elastic reset piece (50) is used for driving the two clamping pieces (10) to be away from each other; wherein, the insulating rod (23) and the guide sleeve (24) are both made of insulating materials.

5. The grounding device for the insulation transformation of the agricultural distribution network line according to claim 3 or 4, characterized by further comprising a clamping opening state maintaining component for locking the state of the clamping opening (12).

6. The grounding device for the insulation transformation of the agricultural distribution network line according to claim 5, wherein the upper end of the insulating rod (23) is rotatably connected with the push-pull piece (22), and the upper end of the insulating rod (23) and the push-pull piece (22) form a limit fit along the rod length direction of the insulating rod (23); the insulating rod (23) is in threaded fit connection with the support frame (30) and/or the guide sleeve (24), and the handle is rotated to enable the insulating rod (23) to drive the push-pull piece (22) to move along the rod length direction of the insulating rod (23); wherein, the screw thread matching structure between the insulating rod (23) and the support frame (30) and/or the guide sleeve (24) forms a clamping opening state maintaining component.

7. The grounding device for the insulation transformation of the agricultural distribution network line according to any one of claims 1 to 4, wherein a guide opening (411) is correspondingly arranged at an inlet of the clamping opening, and the guide opening (411) is arranged in a closing-up shape along a direction in which the cable moves into the clamping opening.

8. The grounding device for the insulation transformation of the agricultural distribution network line according to claim 7, further comprising a positioning groove for positioning the cable in the clamping opening (12), wherein the notch of the positioning groove faces to the side away from the support frame (30), the notch of the positioning groove is arranged corresponding to the inlet of the clamping opening (12), and the length direction of the positioning groove is consistent with the length direction of the cable in the clamping opening (12); the guide opening (411) is arranged at the notch of the positioning groove.

9. The grounding device for the insulation transformation of the rural distribution network line according to claim 8, wherein a channel member (40) is installed on the supporting frame (30), a positioning groove is formed by a groove of the channel member (40), the channel member (40) is oppositely arranged on two sides of the clamping member (10) along the length direction of the cable in the clamping opening (12), parts of the two channel members (40) corresponding to the guiding openings (411) are connected to form guiding surfaces (412), and the guiding openings (411) are formed between the two guiding surfaces (412) of the positioning groove along the width direction of the channel.

Technical Field

The invention relates to the field of power transmission and distribution facilities, in particular to a grounding device for insulation transformation of a rural distribution network line.

Background

Along with the insulating transformation of distribution network line of farming, in the engineering work progress, for avoiding enlarging the power failure scope, guarantee that the earth connection installation position is in visual within range, generally need install the earth connection in the both ends of operation place closely within range, then the actual ground loop of circuit installs too far, and the ground loop is arranged according to predetermineeing interval on the circuit fixed position usually.

Since the distance between both ends of the actual work site is smaller than the installation distance between the adjacent ground rings on the line, if the ground line is to be installed on the line at both ends of the work site, there are generally two types of work methods as in the conventional work method: one is to use the existing grounding ring to perform grounding to implement power failure operation; and secondly, the insulation skins of the insulated lines at two ends of the operation place are removed again, and the grounding ring is installed.

The former operation mode's defect can lead to on a large scale having a power failure, moreover because ground ring interval is big, can lead to the operation circuit to return the electricity because from power generation facility's use during, can have the risk of electrocuteeing, for guaranteeing construction safety, need consume the situation that more manpower monitored the reverse power transmission. The latter operation method has the disadvantages that the operator needs to ascend to perform the operation of removing the insulation sheath and assembling the grounding ring, the operation efficiency is low, and the conductor in the insulation sheath is easily damaged by the error of the operator.

Therefore, in terms of installing grounding lines at two ends of a line operation site, a grounding device which is convenient for peeling and grounding an insulated line is needed.

Disclosure of Invention

The invention aims to provide a grounding device for the insulation transformation of a rural distribution network line, which can conveniently implement grounding at any position of two ends of an insulation line operation site according to requirements.

The technical scheme adopted by the invention is as follows.

A grounding device for insulation transformation of a rural distribution network line comprises a clamp for clamping a cable, wherein a cutter is arranged on the inner side of a clamping opening of the clamp, the cutter is used for cutting an insulation layer of the cable clamped by the clamping opening in the closing process of the clamping opening and is in contact with a conductive inner core, and the cutter is electrically connected with the ground through a grounding wire; the cutting edge parts of the cutters are arranged into circular arc shapes or V-shaped shapes, and circular arc-shaped notches or V-shaped notches of the two cutters face each other respectively.

Preferably, the clamp comprises two clamping pieces which are oppositely arranged, the two clamping pieces are movably assembled on the support frame along the opposite movement direction, and the opposite movement direction of the two clamping pieces is consistent with the radial direction of the cable clamped in the clamping opening; the opposite sides of the two clamping pieces are respectively provided with a cutter; the clamp is connected with a clamp opening adjusting component used for adjusting the opening and closing state of the clamp opening.

Preferably, one or both of the two clamping pieces are matched on the supporting frame in a sliding mode along the direction of opposite movement, the clamping opening adjusting assembly comprises two oppositely arranged connecting rods and a push-pull piece located between the two connecting rods, one ends, close to each other, of the two connecting rods are hinged to the push-pull piece respectively, one ends, far away from each other, of the two connecting rods are hinged to the two clamping pieces respectively, and the push-pull piece is moved along the direction of the cable moving into the clamping opening to enable the two clamping pieces to be close to or away from each other.

Preferably, the electric hand-held device further comprises an insulating rod, one end of the insulating rod is connected with the push-pull piece, and the other end of the insulating rod penetrates through the supporting frame along the direction departing from the clamping piece and forms a handle for people to operate; the length direction of the insulating rod is consistent with the moving direction of the push-pull piece; a guide sleeve is coaxially arranged outside the insulating rod, one end of the guide sleeve is fixedly connected with the support frame, and the other end of the guide sleeve is arranged close to the handle; the push/pull handle moves along the length direction of the insulating rod relative to the guide sleeve so that the two clamping pieces move close to each other; an elastic reset piece is arranged between the support frame and the clamping pieces and is used for driving the two clamping pieces to be away from each other; wherein, the insulating rod and the guide sleeve are both made of insulating materials.

Preferably, the device also comprises a clamping opening state keeping assembly used for locking the state of the clamping opening.

Preferably, the upper end of the insulating rod is rotatably connected with the push-pull piece, and the upper end of the insulating rod and the push-pull piece form limit fit along the rod length direction of the insulating rod; the insulating rod is in threaded fit connection with the support frame and/or the guide sleeve, and the handle is rotated to enable the insulating rod to drive the push-pull piece to move along the rod length direction of the insulating rod; wherein, the screw thread fit structure between the insulating rod and the supporting frame and/or the guide sleeve forms a clamping opening state maintaining assembly.

Preferably, the inlet of the nip is correspondingly provided with a guide port, and the guide port is arranged in a closing-up shape along the direction of the cable moving into the nip.

Preferably, the cable clamp further comprises a positioning groove for positioning the cable in the clamping opening, the notch of the positioning groove faces to one side away from the support frame, the notch of the positioning groove is arranged corresponding to the inlet of the clamping opening, and the length direction of the positioning groove is consistent with the length direction of the cable in the clamping opening; the guiding opening is arranged at the notch of the positioning groove.

Preferably, the support frame is provided with a channel-shaped member, the positioning groove is formed by a groove of the channel-shaped member, the channel-shaped member is oppositely arranged at two sides of the clamping member along the length direction of the cable in the clamping opening, the parts of the two channel-shaped members corresponding to the guiding openings are connected to form guiding surfaces, and the guiding opening is formed between the two guiding surfaces of the positioning groove along the width direction of the channel.

The invention has the technical effects that:

(1) according to the grounding device for the insulation transformation of the rural distribution network line, the cable is clamped through the clamping opening of the clamp, the insulating skin of the cable is cut through the cutter arranged in the clamping opening, so that the cutter is in contact with the conductive inner core in the cable, and the cutter is connected with the ground through the grounding wire, so that the grounding of the insulated line is realized. By adopting the scheme, the operation of cutting the insulating layer and grounding the insulating line is favorably carried out at any position in the visual range of the two ends of the operation site, the efficiency of the grounding operation of the insulating line is improved, the power failure range is favorably reduced, the production and life are ensured to be carried out more stably, the operation personnel can conveniently monitor and avoid the hidden trouble of reverse power transmission in the visual range, and the safety in the line construction process is greatly improved; moreover, the purpose of grounding the cable is realized by cutting the insulating layer through the cutter and connecting the insulating layer with the conductive inner core, the insulating layer of the cable is equivalent to minimally invasive injury, and the insulating layer at the grounding part is not removed, so that the insulating layer is kept to the maximum extent, the insulating layer is more complete, the conductive inner core can be better protected, and the purpose of prolonging the practical service life of the cable is realized; in addition, the cutting edge of the cutter is arranged to be V-shaped or arc-shaped, so that the position, to be cut, of the cable can be further accurately positioned when the cable is cut, and the cutting accuracy is improved.

(2) Specifically constitute the clip through two holders, and two holders are along the direction movable assembly of motion in opposite directions on the support frame, and the cutter is arranged in two holders one side in opposite directions, through linking to each other clip and double-layered mouthful adjusting part to adjust the state that opens and shuts of pressing from both sides the mouth, open the mouth and allow the cable to move into/shift out, closed pressing from both sides the mouth in order to carry out the centre gripping to the intraoral cable of pressing from both sides, then implement the rupture through the cutter to the insulating layer of cable, under the condition that the cutter passes through the earth connection and links to each other with the ground, can reach the purpose of implementing ground connection to the cable.

(3) Adopt connecting rod, push-and-pull component to constitute and press from both sides a mouthful adjusting part to adjust two holders and be close to each other and keep away from, thereby make two holders can conveniently realize switching between two purposes, one of them purpose is for allowing the cable to move into between two holders, and another purpose is for carrying out the cut to the insulating skin of the cable that moves into.

(4) When the device is used, the lower end of the guide sleeve is held by one hand, the handle is held by the other hand, the push-pull action is carried out, and the purpose of adjusting the two clamping pieces to be close to each other can be realized; the two clamping pieces are close to each other and move through the push/pull handle, and the elastic reset piece is arranged between the support frame and the clamping pieces, so that after the push/pull acting force applied to the push-pull piece is removed, the two clamping pieces can be driven to be away from each other through the elastic reset piece to realize reset, and the reset of the clamping opening is more conveniently realized; through adopting insulating material to make insulator spindle and guide pin bushing, can provide the security of operation, avoid the risk of electrocuteeing.

(5) Through setting up the mouth state of pressing from both sides and keeping the subassembly, can lock the position that the holder was located after two holders moved in place to keep the current gesture of holder.

(6) Insulator spindle upper end and push-and-pull piece normal running fit, and the upper end of insulator spindle and push-and-pull piece constitute spacing cooperation along the pole length direction of insulator spindle, can be at the in-process of push-and-pull insulator spindle, prevent the slippage of insulator spindle and push-and-pull piece, then through adopting screw-thread fit to be connected between insulator spindle and support frame and/or the guide pin bushing, can conveniently realize driving the purpose that push-and-pull piece removed through turning handle.

(7) Through set up the guide way in the entrance that presss from both sides the mouth, can guide to treat that the cable that cuts shifts into the constant head tank more smoothly in, and then be favorable to improving the efficiency that the cable shifted into the constant head tank, reduce the complexity of cable location.

(8) Through addding the constant head tank, can fix a position the cable between two holders to be favorable to the holder to implement more accurate the cutting to the insulating skin of cable, and then the damage rate of reducible cable inner conductor.

(9) The support frame is provided with the groove-shaped part, the groove of the groove-shaped part forms the positioning groove, the groove-shaped part is arranged on the two sides of the clamping part at intervals along the length direction of the cable, and the two side parts of the part to be cut on the cable can be positioned and supported, so that the part to be cut of the cable can be cut in a relatively straight posture, the cutting depth and the cutting range can be controlled, the cutting surface of the cable insulation skin is more flat, the cutting range is minimum, and the damage rate of the cable is further reduced; the guide surfaces are formed by connecting the parts corresponding to the guide openings on the two channel-shaped parts, and the guide openings are formed between the two guide surfaces in the width direction of the channel on the positioning groove, namely, the guide surfaces are arranged to enable the channel openings of the positioning groove to be in surface contact with the cables, so that the cables can smoothly enter the positioning groove, and the upper ends of the two channel-shaped parts are prevented from interfering with the cables to clamp the cables.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a front view of an earthing device for insulation transformation of a farm distribution network line provided in an embodiment of the present application;

fig. 2 is a partial structural view of the grounding device for insulation transformation of the agricultural distribution network line under an axial view angle according to the embodiment of the present application;

fig. 3 is a front view of a grounding device for insulation transformation of a farm distribution network line according to another embodiment of the present application; the figures do not include a channel;

FIG. 4 is a front view of a channel provided in accordance with yet another embodiment of the present application;

FIG. 5 is an isometric view of a channel provided in accordance with yet another embodiment of the present application;

fig. 6 is a front view of a grounding device for insulation transformation of a rural distribution network line according to another embodiment of the present application.

The corresponding relation of all the reference numbers is as follows:

10-clamping piece, 11-cutter, 12-clamping mouth;

20-a clamping opening adjusting component, 21-a connecting rod, 22-a push-pull piece, 23-an insulating rod and 24-a guide sleeve;

30-a support frame;

40-channel piece, 41-positioning groove, 411-guide opening, 412-guide surface;

50-an elastic return member;

60-ground line.

Detailed Description

In order that the objects and advantages of the present application will become more apparent, the present application will be described in detail with reference to the following examples. It is understood that the following text is intended only to describe one or several particular embodiments of the application and does not strictly limit the scope of the claims which are specifically claimed herein, and that the examples and features of the examples in this application may be combined with one another without conflict.

Referring to fig. 1 to 6, the embodiment provides a grounding device for insulation transformation of a rural distribution network line, which includes a clamp for clamping a cable, a cutter 11 is disposed inside a clamp opening 12 of the clamp, the cutter 11 is used for cutting an insulation layer of the cable clamped by the clamp opening 12 in a clamp opening closing process and is in contact with a conductive inner core, and the cutter 11 is electrically connected with the ground through a ground wire.

When the scheme is implemented, the clamp is firstly adopted to clamp the cable at the part to be grounded, then the cutter 11 arranged in the clamping opening 12 is used for cutting the insulating layer of the cable, so that the cutter 11 can be contacted with the conductive inner core, and then the cutter 11 is electrically connected with the ground through the ground wire, so that the purpose of grounding the cut part on the cable can be achieved. Wherein, because the cutter 11 only needs to cut the cable insulating layer and can reliably be connected with electrically conductive inner core electricity can, consequently, when the cutter 11 is carrying out the cut processing to the cable insulating layer, only need to cut a small mouthful of child, form a small wound promptly, thereby be favorable to reducing the damage degree of cutter to cable insulating layer itself to the minimum, after accomplishing the circuit construction and demolising the interim earthing device that this embodiment provided, wound on the cable insulating layer can be sealed the wound under the squeezing action of cable insulating layer itself, make the exposed area of electrically conductive inner core further reduce, from this, compare in prior art and get rid of the cable insulating layer at ground connection position, the implementation scheme that this embodiment adopted is more favorable to prolonging the life of cable.

The grounding device for the insulation transformation of the rural distribution network line provided by the embodiment clamps the cable through the clamping opening 12 of the clamp, cuts the insulation skin of the cable through the cutter 11 arranged in the clamping opening 12, enables the cutter 11 to be in contact with the conductive inner core in the cable, and enables the cutter 11 to be connected with the ground through the grounding wire, so that the grounding of the insulation line is realized. By adopting the scheme, the operation of cutting the insulating layer and grounding the insulating line is favorably carried out at any position in the visual range of the two ends of the operation site, the efficiency of the grounding operation of the insulating line is improved, the power failure range is favorably reduced, the production and life are ensured to be carried out more stably, the operation personnel can conveniently monitor the line state in the visual range and avoid the hidden trouble of reverse power transmission, and the safety in the line construction process is greatly improved; moreover, the purpose of grounding the cable is realized by cutting the insulating layer and connecting the insulating layer with the conductive inner core through the cutter 11, so that the insulating layer of the cable is equivalent to minimally invasive injury, but the insulating layer at the grounding part is not removed, so that the insulating layer is kept to the maximum extent, the insulating layer is complete, the conductive inner core can be better protected, and the purpose of prolonging the practical service life of the cable is realized.

The clamp comprises two clamping pieces 10 which are oppositely arranged, the two clamping pieces 10 are movably assembled on the supporting frame 30 along the opposite movement direction, the opposite movement direction of the two clamping pieces 10 is consistent with the radial direction of the cable clamped in the clamping opening 12, in other words, when the two clamping pieces 10 carry out the clamping operation of the cable in the clamping opening 12, the two clamping pieces 10 move close to each other along the radial direction of the cable in the clamping opening 12; the two clamping members 10 are provided with a tool 11 on one side in opposite directions, where the opposite sides of the two clamping members 10 are the sides facing each other on the two clamping members 10; the clamp is connected with a clamp opening adjusting assembly 20 used for adjusting the opening and closing state of the clamp opening 12, the clamp opening 12 is adjusted to be opened and closed through the clamp opening adjusting assembly 20, the clamp opening is opened to allow a cable to move in/out, the clamp opening is closed to clamp the cable in the clamp opening, then the insulating layer of the cable is cut through a cutter, and the purpose of grounding the cable can be achieved under the condition that the cutter is connected with the ground through a grounding wire.

Referring to fig. 1 to 3, one or both of the two clamping members 10 are slidably fitted on the supporting frame 30 along the direction of opposite movement, the nip adjusting assembly 20 includes two oppositely disposed connecting rods 21 and a push-pull member 22 located between the two connecting rods 21, one ends of the two connecting rods 21 close to each other are respectively hinged to the push-pull member 22, one ends of the two connecting rods 21 away from each other are respectively hinged to the two clamping members 10, and the push-pull member 22 is moved along the direction in which the cable moves into the nip 12 to make the two clamping members 10 close to/away from each other. Taking the posture in which the jaws 12 of the clip are arranged upward as an example, when the push-pull member 22 is located below the hinge of the link 21 and the clip member 10, the adjustment of the opening/closing of the jaws 12 can be achieved by pushing/pulling the push-pull member 22 upward/downward. The clamping opening adjusting assembly 20 is formed by the connecting rod 21 and the push-pull piece 22, so that the two clamping pieces 10 can be adjusted to be close to and far away from each other, and therefore the two clamping pieces 10 can be conveniently switched between two purposes, wherein one purpose is to allow the cable to move between the two clamping pieces 10, and the other purpose is to cut the insulation skin of the moved cable.

In order to conveniently lift the clamping opening 12 to a height suitable for the cable, in this embodiment, it is further preferable that the grounding device further includes an insulating rod 23, one end of the insulating rod 23 is connected to the push-pull member 22, and the other end of the insulating rod 23 penetrates through the supporting frame 30 in a direction away from the clamping member 10 and forms a handle for a person to operate; the length direction of the insulating rod 23 is consistent with the moving direction of the push-pull piece 22; a guide sleeve 24 is coaxially arranged outside the insulating rod 23, one end of the guide sleeve 24 is fixedly connected with the support frame 30, and the other end of the guide sleeve 24 is arranged close to the handle; the push/pull handle is moved relative to the guide bush 24 in the rod length direction of the insulating rod 23 so that the two clamps move close to each other; an elastic reset piece 50 is arranged between the supporting frame 30 and the clamping pieces 10, and the elastic reset piece 50 is used for driving the two clamping pieces 10 to be away from each other; wherein, the insulation rod 23 and the guide sleeve 24 are made of insulation materials. In the implementation of the present embodiment, the state of the clamping opening 12 needs to be manually maintained, once the acting force of the push/pull handle is removed, the size of the clamping opening 12 is reset under the action of the elastic reset piece 50, and the opening size of the clamping opening 12 after being reset is the largest.

The purpose of adjusting the mutual approaching of the two clamping pieces 10 can be realized by additionally arranging the insulation rod 23, connecting the upper end of the insulation rod 23 with the push-pull piece 22, enabling the lower end of the insulation rod 23 to penetrate through the support frame 30 to form a handle for people to operate, coaxially arranging the guide sleeve 24 outside the insulation rod 23, connecting the upper end of the guide sleeve 24 with the support frame 30 and extending the lower end of the guide sleeve 24 to the upper part of the handle, and when the device is used, holding the lower end of the guide sleeve 24 with one hand and holding the handle with the other hand to perform the push-pull action; the two clamping pieces 10 are moved close to each other by pushing/pulling the handle, and the elastic resetting piece 50 is arranged between the supporting frame 30 and the clamping pieces 10, so that after the pushing/pulling acting force applied to the push-pull piece 22 is removed, the two clamping pieces 10 can be driven to be away from each other by the elastic resetting piece 50 to realize resetting, and the resetting of the clamping opening 12 is more conveniently realized; by adopting the insulating material to make the insulating rod 23 and the guide sleeve 24, the safety of operation can be provided, and the electric shock risk is avoided.

In order to be able to maintain the state of the clip opening after adjusting the size of the clip opening 12, the present embodiment further includes a clip opening state maintaining assembly for locking the state of the clip opening 12. Through setting up the mouth state of pressing from both sides and keeping the subassembly, can move the position of putting back to the holder and lock in place at two holders to keep the current gesture of holder, make operating personnel laborsaving convenience more.

One embodiment of the nip state maintaining assembly is: the upper end of the insulating rod 23 is rotatably connected with the push-pull piece 22, and the upper end of the insulating rod 23 and the push-pull piece 22 form limit fit along the rod length direction of the insulating rod 23; the insulating rod 23 is in threaded fit connection with the support frame 30 and/or the guide sleeve 24, and the handle is rotated to enable the insulating rod 23 to drive the push-pull piece 22 to move along the rod length direction of the insulating rod 23; wherein, the screw thread matching structure between the insulating rod 23 and the supporting frame 30 and/or the guide sleeve 24 forms a clamping state maintaining component. Insulator spindle 23 upper end and push-and-pull 22 normal running fit, and the upper end of insulator spindle 23 constitutes spacing cooperation with push-and-pull 22 along the pole length direction of insulator spindle 23, can be at the in-process of push-and-pull insulator spindle 23, prevent insulator spindle 23 and the slippage of push-and-pull 22, then through being connected insulator spindle 23 and support frame 30 and/or guide pin bushing 24 through screw-thread fit, can conveniently realize driving the mesh that push-and-pull 22 removed through the twist grip, and the screw thread is from taking the non return function, carry out and play the mesh that keeps pressing from both sides mouthful state holding assembly and keep pressing from both sides mouthful 12 state. In practicing this embodiment, the resilient return member 50 may not be used.

The inlet of the nip 12 is correspondingly provided with a guide opening 411, and the guide opening 411 is arranged in a closing-up shape along the direction that the cable moves into the nip 12. Through set up guide opening 411 at the entrance of pressing from both sides mouthful 12, can guide the cable of treating the laceration immigration to the constant head tank more smoothly in, and then be favorable to improving the efficiency that the cable moved into the constant head tank, reduce the complexity of cable location.

The support frame 30 is electrically connected with the cutter 11, and a wiring terminal for assembling a grounding wire is arranged on the support frame 30 and is used for being connected with the grounding wire. The two clamping pieces 10 are slidably assembled on the support frame 30 through guide rods and springs, the clamping pieces 10 and the cutter 11 are made of conductive materials, the clamping pieces 10 are in conductive connection with the guide rods, and the connecting terminals are electrically connected with the guide rods, so that the cutter 11 is grounded after the connecting terminals are connected with the ground through grounding wires.

The grounding device further comprises a positioning groove, the positioning groove is used for positioning the cable in the clamping opening 12, the notch of the positioning groove faces to one side departing from the supporting frame 30, and the notch of the positioning groove is also arranged upwards by taking the situation that the clamping opening 12 is arranged upwards as an example. The notch of the positioning groove is arranged corresponding to the inlet of the clamping opening 12, and the length direction of the positioning groove is consistent with the length direction of the cable in the clamping opening 12; the guide opening 411 is provided at the notch of the positioning groove. Through addding the constant head tank, can fix a position the cable between two holders 10 to be favorable to holder 10 to implement more accurate the cutting to the insulating skin of cable, and then reducible cable inner conductor's damage rate.

Specifically, the supporting frame 30 is provided with a channel 40, the positioning groove is formed by a groove of the channel 40, the channel 40 is oppositely arranged on two sides of the clamping member 10 along the length direction of the cable in the clamping opening 12, the parts of the two channels 40 corresponding to the guiding opening 411 are connected to form guiding surfaces 412, and the guiding opening 411 is formed between the two guiding surfaces 412 on the positioning groove along the width direction of the channel. The supporting frame 30 is provided with the groove-shaped part 40, the groove of the groove-shaped part 40 forms a positioning groove, the groove-shaped part 40 is arranged on the two sides of the clamping part 10 at intervals along the length direction of the cable, and the two side parts of the part to be cut on the cable can be positioned and supported, so that the part to be cut of the cable can be cut in a straight posture, the cutting depth and the cutting range can be controlled, the cutting surface of the cable insulation skin is smoother, the cutting range is minimum, and the damage rate of the cable is further reduced; the guide surfaces are formed by connecting the parts corresponding to the guide openings on the two channel-shaped members 40, and the guide openings 411 are formed between the two guide surfaces in the width direction of the channel on the positioning slot, that is, the guide surfaces 412 are arranged to form surface contact between the notch of the positioning slot and the cable, so that the cable can enter the positioning slot more smoothly, and the interference between the upper ends of the two channel-shaped members 40 and the cable is prevented to clamp the cable.

The cross section of the positioning groove is U-shaped, V-shaped or circular arc-shaped. The constant head tank can be fixed a position the cable along the approximate position of groove width direction, groove depth direction, then guarantees the uniformity to the cutting position of same kind of cable, cutting depth.

The cutting edge portions of the cutters 11 are arranged in a circular arc shape or a V shape, and circular arc-shaped or V-shaped notches of the two cutters 11 face each other. The cutting edge of the cutter 11 is arranged to be V-shaped or arc-shaped, so that the cable to be cut can be further accurately positioned when the cutting is carried out, and the cutting accuracy is improved.

As another embodiment of the grounding device: referring to fig. 6, when the insulating rod 23 is arranged in a vertical state, that is, when an operator lifts the clip through the insulating rod 23 to the height of the cable to be grounded, the opening 12 of the clip opening and the opening of the channel-shaped member 40 face to one side of the horizontal direction, so that the operator can conveniently and visually observe whether the cable enters the clip opening 12.

During specific implementation, the two clamping pieces 10 are arranged up and down correspondingly, the clamping piece 10 positioned on the upper side is fixedly assembled with the support frame 30, and the clamping piece 10 positioned on the lower side is assembled on the support frame 30 in a sliding and guiding manner along the vertical direction. The clamping piece 10 and the support frame 30 form a sliding guide assembly along the vertical direction means that a vertical guide rail structure is arranged between the clamping piece 10 and the support frame 30, and the clamping piece 10 can be limited to rotate around the central line of the insulating rod 23. The closing/opening of the nip 12 can be achieved by adjusting the raising/lowering of the lower clamp 10. As for how to adjust the lifting of the lower clamp 10, the above-mentioned embodiment can be adopted, that is, the screw thread fit between the insulation rod 23 and the guide sleeve 24, and the lifting and lowering of the lower clamp 10 can be adjusted by rotating the insulation rod 23.

Moreover, when the scheme is implemented, if the clamping piece 10 on the upper side is provided with the V-shaped notch, the clamping piece 10 can be hung on the cable, and therefore the following insulating sheath cutting operation is more convenient and labor-saving.

The above-mentioned cutter 11 can be made into an integral body with the clamping piece 10, and can also be provided with a split type structure, in the case of adopting a split type mechanism, it is preferable to provide a waist-shaped screw hole on the cutter 11 or the clamping piece 10, the cutter 11 and the clamping piece 10 are assembled and connected through a screw, and the length direction of the waist-shaped hole is arranged along the opening and closing direction of the clamping opening, so as to be beneficial to adjusting the position of the cutter 11 along the opening and closing direction of the clamping opening.

Referring to fig. 1 to 3, one or both of the two clamping members 10 is/are provided with a position-adjustable movable limiting portion, which may be a bolt. As an embodiment of the scheme, the opening and closing direction of the bolt body check clamping opening 12 of the bolt penetrates through the clamping pieces 10 and extends into the interval area of the two clamping pieces 10, the bolt cap of the bolt is positioned on one side of the clamping pieces 10, which is far away from the clamping opening, in the approaching process of the two clamping pieces 10, when the bolt on one clamping piece 10 abuts against the bolt on the other clamping piece 10/the other clamping piece 10, the two clamping pieces 10 limit the approaching movement, and therefore the clamping opening size under the closed state of the clamping opening 12 is limited. By turning the bolt, the length of the bolt exposed between the two clamping members 10 can be changed to meet the requirements of cutting and grounding of cables of different sizes.

This earthing device is different with current earth connection, and present ground connection mode reaches the wiring wire end through fixed ground ring usually and connects reliably, and ground ring generally assembles at the assigned position according to the predesign, and the position of not installing ground ring at insulated wire then is not suitable for, and generally two adjacent ground ring mounted position intervals are great, and the current ground ring ground connection of direct utilization certainly can lead to the power failure scope too big, leads to not good influence to people's production life. Moreover, if the existing mode of installation adds the ground ring, then just need to get rid of more one section with the insulating skin, then can reliably install ground ring and electrically conductive inner core and be connected, will produce the damage to circuit itself like this. The upper end of the grounding wire device comprises two adjustable cutter blocks (cutters 11) and a limiting valve (the movable limiting part). After the diameter of the wire is determined, the positions of the two cutter blocks are guaranteed through the limiting valve, the insulating rod is screwed to move the cutter blocks to cut the two radial side portions of the insulated wire, finally, the insulating layer of the insulated wire is cut, the cutter blocks are in contact with the inner core of the wire, the cutter blocks are connected with the grounding wire, and the grounding purpose is finally achieved.

The above-mentioned earthing device that is used for insulating transformation of rural distribution network line that this embodiment provided, simple structure conveniently carries and uses, can adapt to the ground connection demand of optional position in the construction line, and the cable need not to peel the operation, only needs cutter 11 on the device to cut out a wound to the cable insulating layer to realize electrically conductive the being connected through the contact of cutter 11 with electrically conductive inner core, and then just high-efficiently realize the ground connection purpose of construction line through grounding cutter 11 again. The scene that this embodiment can use is comparatively extensive, and convenient to use is reliable, is favorable to popularizing and applying.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.