Cross arm wire clamp and operation method for mounting and dismounting wire on cross arm under electrified condition

Abstract

The cross arm wire clamp comprises a C-shaped elastic body, a cross arm lower clamping opening is formed in the lower portion of the C-shaped elastic body, a cross arm upper clamping opening is formed in the upper portion of the C-shaped elastic body, the cross arm lower clamping opening is used for being clamped on the lower edge of the cross arm, and the cross arm upper clamping opening is used for being clamped on the lower edge of the cross arm. The cross arm upper bayonet is used for being clamped on the upper edge of a cross arm, a lifting connecting part is arranged on the right side of the cross arm lower bayonet and used for being connected with a cross rod of a first switch-out insulating rod, and a wire clamping groove is formed in the left side of the cross arm lower bayonet. The installation operation of the cross arm wire clamp on the cross arm is simple, the wire clamping specification can be unified conveniently, and low-cost hot-line work can be realized by using the cross arm wire clamp and the switch-out insulating cross rod.

Description

Technical Field

[0001] The invention relates to the technical field of overhead line maintenance, in particular to a cross arm wire clamp and a method for installing and removing wires on the cross arm under energized conditions. Background Art

[0002] When the equipment on the overhead line needs to be laid with artificial grounding leads, the wires are usually installed on the crossarms by using tie wires or wire clamps, and sometimes they are only placed on bolts or other parts on the crossarms. The construction efficiency is low, the operation reliability is poor, and it is difficult to achieve a unified standard for the laying process. The traditional wire clamp structure is complex. When installing the wire clamp and laying the grounding wire, the human body needs to be close to or touch the wires and equipment. In order to prevent electric shock accidents, it is generally necessary to shut down the power for installation, which makes it difficult to achieve low-cost live installation. Summary of the invention

[0003] The purpose of the present invention is to provide a crossarm wire clamp and a method for installing and removing wires on a crossarm under live conditions. The installation operation of the crossarm wire clamp on the crossarm is simple and convenient for unifying the wire clamping specifications. At the same time, low-cost live operations can be achieved by using the crossarm wire clamp and the switch insulating crossbar.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a crossarm wire clamp and a method for installing and removing wires on the crossarm under energized conditions, comprising a C-shaped elastic body, a crossarm lower snap-in is arranged at the lower part of the C-shaped elastic body, and a crossarm upper snap-in is arranged at the upper part of the C-shaped elastic body, the crossarm lower snap-in is used to be clamped on the lower edge of the crossarm, the crossarm upper snap-in is used to be clamped on the upper edge of the crossarm, a lifting connection portion is arranged on the right side of the crossarm lower snap-in, the lifting connection portion is used to achieve connection with the crossbar of the first switch insulating rod, and a wire clamping groove is arranged on the left side of the crossarm lower snap-in.

[0005] Preferably, the lifting connection portion is a mounting collar that penetrates front to back, and the mounting collar is distributed along the front to back direction of the C-shaped elastic body.

[0006] Furthermore, a first pull plate is arranged on the left side of the clamping opening on the cross arm, and the first pull plate is distributed in a state of being higher on the left and lower on the right.

[0007] Furthermore, a first through hole is provided on the first pull plate.

[0008] Furthermore, an L-shaped plate is arranged on the upper left side of the wire slot, the short plate of the L-shaped plate is fixedly connected to the upper left side of the wire slot, the long plate of the L-shaped plate is distributed in an inclined state with the left side lower and the right side higher, and the short plate of the L-shaped plate is distributed in a state with the left side higher and the right side lower.

[0009] Furthermore, a second through hole is provided on the long plate of the L-shaped plate.

[0010] Furthermore, the C-shaped elastic body, the first pulling plate, the wire slot and the L-shaped plate are an integrated structure formed by bending elastic steel sheets.

[0011] Furthermore, the C-shaped elastic body, the first pull plate, the wire slot, the L-shaped plate and the mounting ring are an integrated structure made of thermoplastic polyurethane material.

[0012] A wire clamping and disassembling operation method on a cross arm under energized conditions, comprising a cross arm wire clamp and a first switch insulating rod and a second switch insulating rod, wherein the cross rod of the first switch insulating rod is conical, and the wire clamping and disassembling operation method further comprises a wire clamping operation method and a wire clamping and disassembling operation method; the wire clamping operation method comprises the following steps:

[0013] S1. The operator uses pole climbing tools to climb to a certain height on the pole, and then puts on insulating gloves;

[0014] S2, placing the crossbar of the first switch insulating rod in the installation ring, and making the crossarm wire clamp on the crossbar remain in an upright state;

[0015] S3. The operator uses the first pull-off insulating rod to slowly lift the cross arm wire clamp toward the cross arm, and during the lifting process, the short board is kept in a vertical state;

[0016] S4, when the cross arm wire clamp moves to the bottom of the vertical plate close to the cross arm, continue to slowly lift the cross arm wire clamp, so that the outer end of the first pull plate is always in contact with the outer side wall of the vertical plate of the cross arm during the slow lifting process of the cross arm wire clamp, and when the short plate moves vertically to the outside of the inner side wall of the vertical plate of the cross arm, the inner side wall of the short plate is in contact with the inner side wall of the vertical plate of the cross arm;

[0017] S5. When the inner side wall of the short plate fits onto the inner side wall of the vertical plate of the cross arm, the vertical movement of the cross arm wire clamp is stopped, and the horizontal movement of the cross arm wire clamp to the intended installation position is performed. When the cross arm wire clamp moves to the intended installation position, the movement of the cross arm wire clamp is stopped. Then, the first switch insulating rod is rotated as a whole with the axis of the cross bar as the rotation center axis. During the rotation process, the vertical rod of the first switch insulating rod is located below the vertical plate of the cross arm and points to the upper left. After the vertical rod is directed to the upper left, the cross arm wire clamp is continued to be pushed upward. During the pushing process, the lower bayonet of the cross arm is inserted into the lower part of the vertical plate of the cross arm.

[0018] S6. After the lower clamping mouth of the cross arm is clamped on the lower part of the vertical plate of the cross arm, the first pull-off insulating rod is operated to separate the cross arm from the installation ring, thereby completing the preliminary installation of the cross arm wire clamp on the cross arm;

[0019] S7, operate the first switch insulating rod to make the raised step at the end of the crossbar snap into the first through hole, then use the first switch insulating rod to pull the first pull plate to move it toward the outer end of the horizontal plate of the crossarm, during the movement, when the bayonet on the crossarm snaps into the outer end of the horizontal plate of the crossarm, the raised step at the end of the crossbar is disengaged from the first through hole, and then the installation of the crossarm wire clamp on the crossarm is completed;

[0020] S8. Operate the first switch insulating rod so that the raised step at the end of its cross bar is inserted into the second through hole. Then, pull the long plate of the L-shaped plate through the first switch insulating rod, so that the wire slot is rotated a certain angle away from the inner side wall of the vertical plate. Then, use the vertical rod of the second switch insulating rod to squeeze the wire on the cross arm against the inner side wall of the vertical plate of the cross arm, and make the wire be located above the wire slot. Then, use the second switch insulating rod to make the wire move downward along the inner side wall of the vertical plate of the cross arm. When the wire moves to a position opposite to the left and right of the wire slot, stop pulling the wire. Then, release the pulling of the long plate of the L-shaped plate by the first switch insulating rod. Under the action of elastic force, the wire slot returns to the initial position and the wire is simultaneously clamped in the wire slot, thereby completing the clamping operation of the wire on the cross arm.

[0021] The wire clamping and disassembly operation method comprises the following steps:

[0022] S1. Use the cross bar of the first pull-switch insulating rod to pull the long plate of the L-shaped plate, so that the wire slot is in a certain degree of opening state, then use the upper part of the vertical rod of the second pull-switch insulating rod to push the wire upward, so that the wire is out of the wire slot and is located above the short plate of the L-shaped plate, then make the cross bar of the first pull-switch insulating rod release the long plate;

[0023] S2, using the upper part of the vertical rod of the first pull-switch insulating rod to push the first pull plate upward and in a right angle direction to the cross arm, so that the clamping mouth on the cross arm is separated from the outer end of the horizontal plate of the cross arm;

[0024] S3, inserting the cross bar of the first pull-switch insulating rod into the installation ring;

[0025] S4, using the first switch insulating rod to slowly pull the installation collar downward, and in the process of slowly pulling the installation collar downward, the first switch insulating rod is rotated as a whole with the axis of the cross bar as the rotation center axis, so that the vertical rod of the first switch insulating rod points to the upper left of the vertical plate of the cross arm, and when the vertical rod of the first switch insulating rod is located below the vertical plate of the cross arm, the downward movement of the first switch insulating rod is stopped;

[0026] S5. Rotate the first switch insulating rod as a whole with the axis of the crossbar as the central axis of rotation, so that the vertical rod of the first switch insulating rod rotates to the right side below the vertical plate of the crossbar and the first switch insulating rod remains in a vertical state;

[0027] S5. Use the first switch insulating rod to slowly push the cross arm wire clamp upwards. When the inner side wall of the short plate fits with the inner side wall of the vertical plate of the cross arm, stop moving the first switch insulating rod upwards.

[0028] S6. Slowly pull the first switch insulating rod vertically downward. When the first pull plate is located below the vertical plate of the cross arm, the cross arm wire clamp is removed from the cross arm, thereby achieving the clamping and removal of the wire on the cross arm.

[0029] The beneficial effects of the present invention are as follows: the crossarm wire clamp in the present invention has a simple structure and is easy to process and manufacture; by utilizing the elastic-plastic capacity of the C-shaped elastic body, the crossarm upper clamp and the crossarm lower clamp of the crossarm wire clamp can be stably clamped at the corresponding positions of the crossarm, thereby realizing stable installation of the crossarm wire clamp on the crossarm and convenient installation and operation; since the crossarm wire clamp is easy to install and operate on the crossarm, the crossarm wire clamp can be installed and disassembled without power outages by using the switch insulating rod, thereby facilitating the subsequent non-power outage installation and disassembly of the ground wire lead, thereby ensuring The power supply safety during operation; on the basis of the crossarm wire clamp being stably clamped on the crossarm, the wire clamping groove can be used to stably clamp the wires laid on the crossarm, and it is also convenient to realize the unified standard of wire laying; the elastic-plastic deformation ability of the C-shaped elastic body is used to facilitate the disassembly of the crossarm wire clamp on the crossarm, and the disassembly operation is convenient, avoiding the high cost caused by various springs, bolts, hinges and other complex structures, and the loosening and falling of bolts, spring fatigue fracture, weld cracking, wear and rust and other faults. When the C-shaped elastic body is hot-dip galvanized After zinc process anti-corrosion, it has high maintenance-free performance and will not trip, loosen or fall off in the natural environment under the line design conditions; by using the pull-switch insulating rod, the live installation and disassembly of the cross-arm wire clamp on the cross-arm can be realized, and then low-cost live operation can be realized, while improving the safety of the operation; by using the inclination of the long plate of the L-shaped plate, it is convenient to use the pull-switch insulating rod to operate the cross-arm wire clamp so that the lower clamp of the cross-arm is smoothly clamped on the lower part of the vertical plate of the cross-arm, and by using the inclined setting of the first pull plate and the first through hole, it is convenient to use the pull-switch The insulating rod pulls the first pull plate to move, which makes it easy to realize that the clip on the cross arm is smoothly clipped on the outer end of the horizontal plate of the cross arm; the cross bar of the insulating rod of the pull switch has a conical structure, which makes it easy to realize the close cooperation between the cross bar and the installation ring, so as to realize the vertical placement of the cross arm wire clamp on the cross bar, and at the same time, it is also easy to realize the separation of the cross bar and the installation ring; the wire clamping operation method and the wire clamping and disassembly method provided in the present invention can safely and quickly realize the clamping and disassembly of the wire on the cross arm, thereby improving the efficiency of the wire clamping and disassembly operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a schematic diagram of the overall structure of the cross arm clamp in the present invention;

[0032] Figure 2 This is a front view of the overall structure of the cross arm clamp of the present invention;

[0033] Figure 3 The front view of the state where the cross arm clamp clamps the wire on the cross arm;

[0034] Figure 4 It is a schematic diagram of a state in which a cross arm wire clamp is sleeved on a cross bar of a first pull switch insulating rod by using a mounting collar;

[0035] In the figure: 1C-shaped elastic body, 11 cross arm lower snap-in, 12 cross arm upper snap-in, 13 mounting ring, 14 wire slot, 15 first pull plate, 151 first through hole, 16 L-shaped plate, 161 long plate, 1611 second through hole, 162 short plate, 2 cross arms, 21 horizontal plate, 22 vertical plate, 3 wires, 4 first pull switch insulating rod, 41 cross rod, 42 vertical rod. DETAILED DESCRIPTION

[0036] The following will be combined with specific embodiments and attached Figure 1-4 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the preferred embodiments of the present invention, rather than all the embodiments. Those skilled in the art can make similar modifications without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0037] The cross arm 2 involved in the present invention is made of angle steel with a right triangle cross section, and the cross arm is usually made of equilateral angle steel.

[0038] The present invention provides a cross arm clamp (such as Figure 1As shown), it includes a C-shaped elastic body 1, and the C-shaped elastic body 1 has good elastic deformation ability and certain structural strength. Therefore, in practical applications, the elastic reset ability of the C-shaped elastic body 1 can be used to realize the stable clamping of the crossarm wire clamp on the crossarm 2. At the same time, it is also convenient to utilize its certain structural strength to realize the stable clamping of the wire 3 laid on the crossarm 2. A crossarm lower snap-in 11 is arranged at the lower part of the C-shaped elastic body 1, and the crossarm lower snap-in 11 is used to be clamped on the lower edge of the crossarm 2. Specifically, the crossarm lower snap-in 11 is used to be clamped on the lower edge of the vertical plate 22 of the crossarm 2. An upper crossarm snap-in is arranged at the upper part of the C-shaped elastic body 1, and the upper crossarm snap-in 12 is used to be clamped on the upper edge of the crossarm 2. Specifically, the crossarm The upper clamp 12 is used to be clamped at the outer edge of the horizontal plate 21 of the crossarm 2. In actual application, the upper clamp 12 of the crossarm is clamped at the outer edge of the horizontal plate 21 and the lower clamp 11 of the crossarm is clamped at the lower edge of the vertical plate 22. The elastic reset ability of the C-shaped elastic body 1 is utilized to make the upper clamp 12 of the crossarm and the lower clamp 11 of the crossarm both tightly attached to the corresponding clamping positions, thereby realizing the stable clamping of the crossarm wire clamp on the right-angled crossarm 2. A lifting connection portion is provided on the right side of the lower clamp 11 of the crossarm, and the lifting connection portion is used to realize the connection with the crossbar 41 of the first switch insulating rod 4. A wire clamping groove 14 is provided on the left side of the lower clamp 11 of the crossarm, and the wire clamping groove 14 is used to realize the effective and stable clamping of the wire 3 laid on the crossarm 2.

[0039] On the basis of the above-mentioned embodiment, the specific implementation method of the lifting connection part is as follows: the lifting connection part is a mounting ring 13 that passes through from front to back, and the mounting ring 13 is distributed along the front and back direction of the C-shaped elastic body 1. When the lifting operation of the crossarm wire clamp is performed by using the first pull-switch insulating rod 4, the mounting ring 13 is placed on its cross bar 41.

[0040] On the basis of the above embodiments, in order to facilitate the smooth oblique pulling and pushing of the upper part of the C-shaped elastic body 1, a first pull plate 15 is arranged on the left side of the snap-in 12 on the cross arm, and the first pull plate 15 is distributed in a state of being higher on the left and lower on the right. Furthermore, a first through hole 151 is arranged on the first pull plate 15. When the raised step at the outer end of the cross bar 41 is inserted into the first through hole 151, the raised step is clamped on the edge of the first through hole 151, which facilitates the pulling of the first pull plate 15, thereby realizing the pulling operation of the upper part of the C-shaped elastic body 1.

[0041] On the basis of the above embodiment, in order to facilitate the smooth insertion of the lower bayonet 11 of the crossarm into the lower edge of the vertical plate 22 of the crossarm 2, an L-shaped plate 16 is arranged on the upper left side of the wire slot 14, and the short plate 162 of the L-shaped plate 16 is fixedly connected to the upper left side of the wire slot 14, and the long plate 161 of the L-shaped plate 16 is distributed in an inclined state with the left side lower and the right side higher, and the short plate 162 of the L-shaped plate 16 is distributed in a state of being high on the left and low on the right. By using the inclined setting of the short plate 162, it is convenient to use its guiding effect to make the lower part of the vertical plate 22 smoothly enter the upper part of the lower bayonet 11 of the crossarm, so as to facilitate the subsequent smooth implementation of the crossarm. The lower clamping opening 11 is clamped at the lower part of the vertical plate 22. At the same time, the long plate 161 is used to facilitate the pulling of the wire slot 14, so that the wire slot 14 can be smoothly opened, and then the wire 3 is moved down and clamped into the wire slot 14. Furthermore, in order to facilitate the pulling of the long plate 161, a second through hole 1611 is set on the long plate 161 of the L-shaped plate 16. After the outer end of the cross bar 41 is inserted into the second through hole 1611, the raised step at the outer end of the cross bar 41 is clamped at the edge of the second through hole 1611, so that the long plate 161 can be pulled by the cross bar 41, and then the wire slot 14 can be pulled and opened.

[0042] In practical applications, the C-shaped elastic body 1, the first pull plate 15, the wire slot 14 and the L-shaped plate 16 can be an integrated structure formed by bending an elastic steel sheet. After the bending process of the above-mentioned integrated structure is realized by the elastic steel sheet, the fixing connection of the mounting ring 13 at the corresponding position is realized by welding.

[0043] In practical applications, if the wire needs to be insulated, the C-shaped elastic body 1, the first pull plate 15, the wire slot 14, the L-shaped plate 16 and the mounting ring 13 can be batch-injected into an integrated fully insulating structure using elastic corrosion-resistant materials with sufficient mechanical strength and insulation capacity, or the existing 3D printing technology can be used to directly realize the overall one-time processing of the above-mentioned integrated fully insulating structure, and the processing process is convenient.

[0044] The present invention also provides a method for clamping and removing wires on a cross arm under energized conditions, comprising the cross arm wire clamp and the first switch insulating rod 4 and the second switch insulating rod provided in the above embodiment, wherein the first switch insulating rod 4 and the second switch insulating rod are conventional insulating switch rods, and the cross bar 41 of the first switch insulating rod 4 is conical. The structures of the first insulating switch rod 4 and the second insulating switch rod are basically the same, and the only difference is the shape of the cross bar 41. In practical applications, the cross bar 41 of the first switch insulating rod 4 can be directly processed into a conical structure, or a cross bar 41 with an outer side in the shape of a conical structure can be set on the cross bar 41. The conical sleeve, when the conical cross bar 41 is sleeved in the installation ring 13, as the cross bar 41 continues to go deeper, the side of part of the cross bar 41 is closely fitted with the inner wall of the installation ring 13, and then the friction between the cross bar 41 and the installation ring 13 is used to realize that the cross arm wire clamp on the cross bar 41 is kept in a vertically stable state as a whole, and then the first pull-off insulating rod 4 is used to realize the installation operation of the cross arm wire clamp on the cross arm 2. The wire clamping and disassembly operation method also includes a wire clamping operation method and a wire clamping and disassembly operation method; the wire clamping operation method includes the following steps:

[0045] S1. The operator uses the pole climbing tool to climb to a certain height on the pole, and then puts on insulating gloves. The pole climbing tool is a commonly used known technical product in the field of power supply line maintenance, so the detailed structure of the pole climbing tool is not introduced in detail. In this specific embodiment, the operator has two staff members;

[0046] S2, the crossbar 41 of the first pull-off insulating rod 4 is placed in the installation ring 13, and the cross-arm wire clamp is kept in an upright position on the crossbar 41; in this step, the purpose of keeping the cross-arm wire clamp in an upright position is to enable the upper first pull plate 15 of the C-shaped elastic body 1 to smoothly reach the top of the cross-arm 2 during the subsequent lifting of the cross-arm wire clamp;

[0047] S3, the operator uses the first switch insulating rod 4 to slowly lift the cross arm wire clamp toward the cross arm 2, and during the lifting process, the short board is kept in a vertical state;

[0048] S4, when the cross arm wire clamp moves to the bottom of the vertical plate 22 close to the cross arm 2, continue to slowly lift the cross arm wire clamp, and in the process of slowly rising the cross arm wire clamp, the outer end of the first pull plate 15 is always in contact with the outer side wall of the vertical plate 22 of the cross arm 2. The purpose of making the outer end of the first pull plate 15 in contact with the outer side of the vertical plate 22 is to use the guidance of the vertical plate 22 so that the lower part of the vertical plate can be smoothly clamped in the gap between the C-shaped elastic body 1 and the short plate 162. When the short plate 162 moves vertically to the outer side of the inner side wall of the vertical plate 22 of the cross arm 2, the inner side wall of the short plate 22 is in contact with the inner side wall of the vertical plate 22 of the cross arm 2.

[0049] S5. When the inner side wall of the short plate 22 is attached to the inner side wall of the vertical plate 22 of the cross arm 2, the vertical movement of the cross arm wire clamp is stopped, and the cross arm wire clamp is horizontally moved to the intended installation position. When the cross arm wire clamp moves to the intended installation position, the movement of the cross arm wire clamp is stopped; then, the first pull-off insulating rod 4 is rotated as a whole with the axis of the cross bar 41 as the rotation center axis. During the rotation process, the vertical rod 42 of the first pull-off insulating rod 4 is located below the vertical plate 22 of the cross arm 2 and is directed to the upper left (the left and right in this step are described based on the attached Figure 3 After the vertical rod 42 is directed to the upper left, the cross-arm wire clamp is pushed upward. During the pushing process, the lower bayonet 11 of the cross-arm is inserted into the lower part of the vertical plate 22 of the cross-arm 2. The purpose of rotating the vertical rod 42 to point to the upper left is that the vertical plate 22 will not hinder the vertical rod 42 from fully moving obliquely upward when the first switch insulating rod 4 is pushed later, so as to ensure that the lower bayonet 11 of the cross-arm can be fully inserted into the lower part of the vertical plate 22 through the oblique push of the first switch insulating rod 4.

[0050] S6. After the lower clamping opening 11 of the cross arm is clamped at the lower part of the vertical plate 22 of the cross arm 2, the first pull-off insulating rod 4 is operated to separate the cross bar 41 from the installation ring 13, and then the preliminary installation of the cross arm wire clamp on the cross arm 2 is completed. When the cross bar 41 is separated from the installation ring 13, the first pull plate 15 is located at the upper part of the horizontal plate 21, and the lower clamping opening 11 of the cross arm is clamped at the lower part of the vertical plate 22. In this state, the C-shaped elastic body 1 has been elastically deformed, so the elastic reset ability of the C-shaped elastic body 1 is used to achieve the initial stable clamping of the cross arm wire clamp on the cross arm 2. Therefore, when the cross bar 41 is pulled horizontally with force, it can separate the cross bar 41 from the installation ring 13. The preliminary installation of the cross arm wire clamp on the cross arm 2 is completed through the above operation steps.

[0051] S7, operate the first switch insulating rod 4 so that the raised step at the end of the crossbar 41 is inserted into the first through hole 151, then use the first switch insulating rod 4 to pull the first pull plate 15 to move it toward the outer end of the horizontal plate 21 of the crossarm 2. During the movement, when the upper clip 12 of the crossarm is inserted into the outer end of the horizontal plate 21 of the crossarm 2, the raised step at the end of the crossbar 41 is disengaged from the first through hole 151, and then the installation of the crossarm wire clamp on the crossarm is completed. By using the elastic reset ability of the C-shaped elastic body 1, the upper clip 12 of the crossarm and the lower clip 11 of the crossarm can be tightly clamped at the corresponding positions, thereby ensuring the installation stability of the crossarm wire clamp on the crossarm 2;

[0052] S8, operate the first pull-off insulating rod 4 to make the raised step at the end of the crossbar 41 inserted into the second through hole 1611, then, pull the long plate 161 of the L-shaped plate 16 by the first pull-off insulating rod 4, so that the wire slot 14 is rotated a certain angle away from the inner side wall of the vertical plate 22. At this time, the gap between the wire slot 14 and the side wall of the vertical plate 22 is large, which is conducive to the subsequent pulling of the wire 3 on the cross arm 2 into the wire slot 14, and then, use the vertical rod of the second pull-off insulating rod to squeeze the wire 3 on the cross arm 2 against the vertical side wall of the cross arm 2. The wire 3 is moved downward along the inner wall of the vertical plate 22 of the cross arm 2 by the second insulating rod 4. When the wire 3 moves to a position opposite to the wire slot 14, the pulling of the wire 3 is stopped. Then, the pulling of the long plate 161 of the L-shaped plate 16 by the first insulating rod 4 is released. Under the action of the elastic force, the wire slot 14 returns to the initial position and the wire 3 is simultaneously clamped in the wire slot 14, thereby completing the clamping operation of the wire 3 on the cross arm 2.

[0053] The wire clamping and disassembly operation method comprises the following steps:

[0054] S1. Use the cross bar 41 of the first pull-switch insulating rod 4 to pull the long plate 161 of the L-shaped plate 16, so that the wire slot 14 is in a certain degree of opening state, and then use the upper part of the vertical rod of the second pull-switch insulating rod to push up the wire 3, so that the wire 3 is separated from the wire slot 14 and is located above the short plate 162 of the L-shaped plate 16, and then the cross bar 41 of the first pull-switch insulating rod 4 releases the long plate 161; through this step, the wire 3 is removed from the wire slot 14, which facilitates the subsequent separate removal of the cross arm wire clamp;

[0055] S2, using the upper part of the vertical rod 42 of the first pull-off insulating rod 4 to push the first pull plate 15 upward and in a right angle direction to the cross arm 2, so that the cross arm upper clip 12 is separated from the outer end of the horizontal plate of the cross arm 2; that is, this step realizes the separation of the cross arm upper clip 12 and the outer end of the horizontal plate 21;

[0056] S3, inserting the cross bar 41 of the first switch insulating rod 4 into the mounting ring 13;

[0057] S4, slowly pull the installation collar 13 downward with the first switch insulating rod 4, and in the process of slowly pulling the installation collar 13 downward, the first switch insulating rod 4 is rotated as a whole with the axis of the cross bar 41 as the rotation center axis, so that the vertical rod 42 of the first switch insulating rod 4 points to the upper left of the vertical plate of the cross arm 2, and when the vertical rod 42 of the first switch insulating rod 4 is located below the vertical plate 22 of the cross arm 2, the downward movement of the first switch insulating rod 4 is stopped;

[0058] S5, rotating the first switch insulating rod 4 as a whole with the axis of the cross bar 41 as the rotation center axis, so that the vertical rod 42 of the first switch insulating rod 4 rotates to the right side below the vertical plate 22 of the cross arm 2 and the first switch insulating rod 4 remains in a vertical state;

[0059] S6. Use the first switch insulating rod 4 to slowly push the cross arm wire clamp upwards. When the inner side wall of the short plate 162 fits with the inner side wall of the vertical plate 22 of the cross arm 2, stop moving the first switch insulating rod 4 upwards.

[0060] S7. Slowly pull the first switch insulating rod 4 vertically downward. When the first pull plate 15 is located below the vertical plate 22 of the cross arm 2, the cross arm wire clamp is removed from the cross arm 2, thereby achieving the clamping and removal of the wire 3 on the cross arm 2.

[0061] In the present invention, "up", "down", "front", "back", "left" and "right" are relative positions used to conveniently describe positional relationships, and therefore cannot be understood as absolute positions to limit the scope of protection.

[0062] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.

[0063] The above description in combination with the accompanying drawings has detailed the preferred implementation modes and embodiments of the present invention, but the present invention is not limited to the above implementation modes and embodiments. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the concept of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cross arm clamp, characterized in that: It includes a C-shaped elastic body, a lower crossarm snap-in is arranged at the lower part of the C-shaped elastic body, an upper crossarm snap-in is arranged at the upper part of the C-shaped elastic body, the lower crossarm snap-in is used to be clamped on the lower edge of the crossarm, the upper crossarm snap-in is used to be clamped on the upper edge of the crossarm, a lifting connection part is arranged on the right side of the lower crossarm snap-in, the lifting connection part is used to achieve connection with the crossbar of the first pull-switch insulating rod, and a wire clamping groove is arranged on the left side of the lower crossarm snap-in.

2. The cross arm clamp according to claim 1, characterized in that: The lifting connection part is a mounting collar that penetrates front to back, and the mounting collar is distributed along the front to back direction of the C-shaped elastic body.

3. The cross arm clamp according to claim 2, characterized in that A first pull plate is arranged on the left side of the clamping opening on the cross arm, and the first pull plate is distributed in a state of being higher on the left and lower on the right.

4. The cross arm clamp according to claim 3, characterized in that: A first through hole is arranged on the first pulling plate.

5. The cross arm clamp according to claim 4, characterized in that An L-shaped plate is arranged on the upper left side of the wire slot, the short plate of the L-shaped plate is fixedly connected to the upper left side of the wire slot, the long plate of the L-shaped plate is distributed in an inclined state with the left side lower and the right side higher, and the short plate of the L-shaped plate is distributed in a state with the left side higher and the right side lower.

6. The cross arm clamp according to claim 5, characterized in that: A second through hole is arranged on the long plate of the L-shaped plate.

7. The cross arm clamp according to claim 6, characterized in that: The C-shaped elastic body, the first pulling plate, the wire slot and the L-shaped plate are an integrated structure formed by bending elastic steel sheets.

8. The cross arm clamp according to claim 6, characterized in that: The C-shaped elastic body, the first pulling plate, the wire slot, the L-shaped plate and the mounting ring are an integrated structure made of thermoplastic polyurethane material.

9. A method for clamping and removing wires on a cross arm under live conditions, characterized in that: The method comprises the cross arm wire clamp and the first and second switch insulating rods according to claim 6, wherein the cross bar of the first switch insulating rod is conical, and the wire clamping and disassembly operation method further comprises a wire clamping operation method and a wire clamping and disassembly operation method; the wire clamping operation method comprises the following steps: S1. The operator uses pole climbing tools to climb to a certain height on the pole, and then puts on insulating gloves; S2, placing the crossbar of the first switch insulating rod in the installation ring, and making the crossarm wire clamp on the crossbar remain in an upright state; S3. The operator uses the first pull-off insulating rod to slowly lift the cross-arm wire clamp toward the cross-arm position, and during the lifting process, the short board is kept in a vertical state; S4, when the cross arm wire clamp moves to the bottom of the vertical plate close to the cross arm, continue to slowly lift the cross arm wire clamp, so that the outer end of the first pull plate is always in contact with the outer side wall of the vertical plate of the cross arm during the slow lifting process of the cross arm wire clamp, and when the short plate moves vertically to the outside of the inner side wall of the vertical plate of the cross arm, the inner side wall of the short plate is in contact with the inner side wall of the vertical plate of the cross arm; S5. When the inner side wall of the short plate fits onto the inner side wall of the vertical plate of the cross arm, the vertical movement of the cross arm wire clamp is stopped, and the horizontal movement of the cross arm wire clamp to the intended installation position is performed. When the cross arm wire clamp moves to the intended installation position, the movement of the cross arm wire clamp is stopped. Then, the first switch insulating rod is rotated as a whole with the axis of the cross bar as the rotation center axis. During the rotation process, the vertical rod of the first switch insulating rod is located below the vertical plate of the cross arm and points to the upper left. After the vertical rod is directed to the upper left, the cross arm wire clamp is continued to be pushed upward. During the pushing process, the lower bayonet of the cross arm is inserted into the lower part of the vertical plate of the cross arm. S6. After the lower clamping mouth of the cross arm is clamped on the lower part of the vertical plate of the cross arm, the first pull-off insulating rod is operated to separate the cross arm from the installation ring, thereby completing the preliminary installation of the cross arm wire clamp on the cross arm; S7, operate the first switch insulating rod to make the raised step at the end of the crossbar snap into the first through hole, then use the first switch insulating rod to pull the first pull plate to move it toward the outer end of the horizontal plate of the crossarm, during the movement, when the bayonet on the crossarm snaps into the outer end of the horizontal plate of the crossarm, the raised step at the end of the crossbar is disengaged from the first through hole, and then the installation of the crossarm wire clamp on the crossarm is completed; S8. Operate the first switch insulating rod so that the raised step at the end of its cross bar is inserted into the second through hole. Then, pull the long plate of the L-shaped plate through the first switch insulating rod, so that the wire slot is rotated a certain angle away from the inner side wall of the vertical plate. Then, use the vertical rod of the second switch insulating rod to squeeze the wire on the cross arm against the inner side wall of the vertical plate of the cross arm, and make the wire be located above the wire slot. Then, use the second switch insulating rod to make the wire move downward along the inner side wall of the vertical plate of the cross arm. When the wire moves to a position opposite to the left and right of the wire slot, stop pulling the wire. Then, release the pulling of the long plate of the L-shaped plate by the first switch insulating rod. Under the action of elastic force, the wire slot returns to the initial position and the wire is simultaneously clamped in the wire slot, thereby completing the clamping operation of the wire on the cross arm. The wire clamping and disassembly operation method comprises the following steps: S1. Use the cross bar of the first pull-switch insulating rod to pull the long plate of the L-shaped plate, so that the wire slot is in a certain degree of opening state, then use the upper part of the vertical rod of the second pull-switch insulating rod to push the wire upward, so that the wire is out of the wire slot and is located above the short plate of the L-shaped plate, then make the cross bar of the first pull-switch insulating rod release the long plate; S2, using the upper part of the vertical rod of the first pull-switch insulating rod to push the first pull plate upward and in a right angle direction to the cross arm, so that the clamping mouth on the cross arm is separated from the outer end of the horizontal plate of the cross arm; S3, inserting the cross bar of the first pull-switch insulating rod into the installation ring; S4, using the first switch insulating rod to slowly pull the installation collar downward, and in the process of slowly pulling the installation collar downward, the first switch insulating rod is rotated as a whole with the axis of the cross bar as the rotation center axis, so that the vertical rod of the first switch insulating rod points to the upper left of the vertical plate of the cross arm, and when the vertical rod of the first switch insulating rod is located below the vertical plate of the cross arm, the downward movement of the first switch insulating rod is stopped; S5. Rotate the first switch insulating rod as a whole with the axis of the crossbar as the central axis of rotation, so that the vertical rod of the first switch insulating rod rotates to the right side below the vertical plate of the crossbar and the first switch insulating rod remains in a vertical state; S6. Use the first switch insulating rod to slowly push the cross arm wire clamp upwards. When the inner side wall of the short plate fits the inner side wall of the vertical plate of the cross arm, stop moving the first switch insulating rod upwards. S7. Slowly pull the first switch insulating rod downward vertically. When the first pull plate is located below the vertical plate of the cross arm, the cross arm wire clamp is removed from the cross arm, thereby achieving the clamping and removal of the wire on the cross arm.

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