CN204011797U - A kind of earthing wire clip - Google Patents

Abstract

A ground wire clip. The utility model relates to the field of safety protection for the installation of substations, overhead power transmission lines, power distribution lines and cable lines in the electric power industry, in particular to a ground wire clip. The purpose of the utility model is to solve the problem that it takes a long time to dismantle the traditional grounding wire clamp and the long-term continuous operation seriously affects the physical ability of the operator, and buryes hidden dangers for safe operation. A grounding wire clamp of the utility model comprises a grounding wire clamp body and a sleeve connected with an insulating pull rod, a chuck is arranged on the grounding wire clamp body, and the sleeve is composed of a straight tube body and a horn tube type tube body. The straight tube body and the narrow mouth end of the horn tube body are butted into one structure. There is a long first hole on the tube wall of the horn tube body, and a second channel is opened on the tube wall of the straight tube body. In the tunnel, a turning tunnel is arranged perpendicular to the tunnel on one side of the closed end of the second tunnel, and a first positioning hole and a second positioning hole are arranged on both sides of the end of the turning tunnel.

Description

A ground wire clip

technical field

The utility model relates to the field of safety protection for the installation of substations, overhead power transmission lines, power distribution lines and cable lines in the electric power industry, in particular to a ground wire clip.

Background technique

The connection part of the traditional grounding wire clamp and the insulating tie rod is a straight-through connection. In order to ensure a tight and reliable connection, the sleeve of the wire clamp is designed as a straight cylinder, and the size of the sleeve is almost the same as that of the metal rod of the insulating tie rod. Although this design ensures that the ground wire clamp does not disengage and does not shake during the installation of the ground wire, which ensures safety, but when the ground wire is removed, because the drainage wire is relatively high from the ground, generally 4-5 meters, it will When the metal rod of the insulating tie rod is inserted into the connecting sleeve of the ground wire clamp, the insulating tie rod and the ground wire clamp cannot be connected due to the shaking of the insulating tie rod (the three-section tie rod shakes under normal conditions, and the shaking is more serious if the wind speed is calculated), so it is necessary to remove the ground wire of one phase 2 minutes, it takes nearly 7 minutes to disassemble one group (three phases). The large-scale operation of a 220kV substation needs to hang 10 or more sets of grounding wires, and it takes about an hour to remove the grounding wires alone, which affects the timeliness and reliability of power supply; at the same time, the long-term operation seriously affects the physical fitness of operators. Hidden dangers have been buried for safe operation.

Contents of the invention

The purpose of the utility model is to solve the problem that the traditional grounding wire clamp takes a long time to dismantle and the long-term continuous operation seriously affects the physical ability of the operator, which buryes hidden dangers for safe operation, and provides a grounding wire clamp.

A grounding wire clip of the present utility model comprises a grounding wire clip body and a sleeve connected with an insulating pull rod. The straight pipe body and the narrow mouth end of the trumpet pipe body are butt-jointed as an integrated structure. On the pipe wall of the horn pipe body, there is a first channel with a long length along the axial direction of the horn pipe body. On the tube wall of the straight tube body, there is a second hole along the axial direction of the straight tube body, the first hole communicates with the second hole, and there is a turning hole perpendicular to the second hole on the side of the second hole closed end, One end of the steering hole communicates with the second hole, and the other end of the turning hole is provided with a first positioning hole and a second positioning hole on both sides of the end.

Beneficial effects of the utility model

① Install a horn at the root of the traditional ground clamp circular sleeve to limit the position, increase the success rate of the connection between the metal rod of the insulating pull rod and the ground clamp sleeve, and quickly connect the insulating pull rod to the ground clamp when the ground wire is removed , the speed of connecting the insulating rod and the ground wire clamp has increased by 600%. It used to take 30 seconds for the fastest connection between the insulating rod and the ground wire clamp, and 2 minutes for the slowest connection. After installing the horn sleeve, the insulation rod and the ground wire The clamp connection time is only 5 seconds, which greatly improves work efficiency, shortens the time for removing the ground wire, saves switching operation time, and ensures timely power supply.

② Reduce the labor intensity during the operation and ensure that the operation and maintenance personnel are physically strong.

③It reduces the possibility of accidental contact with live equipment due to physical exhaustion caused by lifting the insulating pull rod for a long time.

④ A limit function is added to the end of the original linear operation track (steering tunnel), one is to limit the insulation rod when the ground wire is installed, and the other is to limit the insulation rod when the ground wire is removed, so as to avoid installation or removal of the ground wire. When connecting wires, the metal rod of the insulating pull rod slides out of the track of the ground wire clamp, burying hidden dangers for the operation.

Description of drawings

Fig. 1 is the structural representation of a kind of ground wire clamp of the present utility model;

Fig. 2 is a schematic diagram of a side partial structure of a sleeve connected to an insulating pull rod of a ground wire clamp of the present invention;

Fig. 3 is a structural schematic diagram of an insulating pull rod used in conjunction with a ground wire clamp of the utility model; wherein A is an insulating rod, B is a metal rod, B-1 is a vertical rod, and B-2 is a positioning horizontal rod.

Detailed ways

Specific Embodiment 1: A grounding wire clamp in this embodiment includes a grounding wire clamp body 1 and a sleeve 2 connected to an insulating pull rod. The grounding wire clamp body 1 is provided with a chuck, which is characterized in that the sleeve 2 is made of The straight tube body 3 and the trumpet tube body 4 are composed of the straight tube body 3 and the narrow mouth end of the horn tube body 4 buttted into one structure, and the tube wall of the horn tube body 4 is along the horn type The pipe body 4 is provided with a long first channel 4-1 in the axial direction, and the second channel 3-1 is opened along the axial direction of the straight tube body 3 on the tube wall of the straight tube body 3, and the first channel 4 -1 communicates with the second tunnel 3-1, and there is a turning tunnel 3-2 perpendicular to the second tunnel 3-1 on one side of the closed end of the second tunnel 3-1, and one end of the steering tunnel 3-2 is connected to the second tunnel 3 -1 communicates with each other, and the other end of the steering hole 3-2 is provided with a first positioning hole 3-4 and a second positioning hole 3-5 on both sides of the end.

① Install a horn at the root of the traditional ground clamp circular sleeve to limit the position, increase the success rate of the connection between the metal rod of the insulating pull rod and the ground clamp sleeve, and quickly connect the insulating pull rod to the ground clamp when the ground wire is removed , the speed of connecting the insulating rod and the ground wire clamp has increased by 600%. It used to take 30 seconds for the fastest connection between the insulating rod and the ground wire clamp, and 2 minutes for the slowest connection. After installing the horn sleeve, the insulation rod and the ground wire The clamp connection time is only 5 seconds, which greatly improves work efficiency, shortens the time for removing the ground wire, saves switching operation time, and ensures timely power supply.

② Reduce the labor intensity during the operation and ensure that the operation and maintenance personnel are physically strong.

③It reduces the possibility of accidental contact with live equipment due to physical exhaustion caused by lifting the insulating pull rod for a long time.

④ A limit function is added to the end of the original linear operation track (steering tunnel), one is to limit the insulation rod when the ground wire is installed, and the other is to limit the insulation rod when the ground wire is removed, so as to avoid installation or removal of the ground wire. When connecting wires, the metal rod of the insulating pull rod slides out of the track of the ground wire clamp, burying hidden dangers for the operation.

Embodiment 2: This embodiment differs from Embodiment 1 in that: the ground wire clamp body 1 and the sleeve 2 are connected by metal crimping, and the interfaces on both sides are reinforced with rivets. Other steps and parameters are the same as those in the first embodiment.

Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the material of the ground wire clip body 1 is cast aluminum alloy. Other steps and parameters are the same as those in Embodiment 1 or 2.

Embodiment 4: This embodiment differs from Embodiments 1 to 3 in that the sleeve 2 is made of aluminum alloy. Other steps and parameters are the same as those in the first to third specific embodiments.

Embodiment 5: This embodiment differs from Embodiments 1 to 4 in that: the diameter of the flared end of the horn tube body 4 is 1.5 to 2.5 times the diameter of the narrow end. Other steps and parameters are the same as in one of the specific embodiments 1 to 4.

Embodiment 6: This embodiment differs from Embodiment 1 to Embodiment 5 in that: the diameter of the flared end of the horn tube body 4 is twice the diameter of the narrow end. Other steps and parameters are the same as one of the specific embodiments 1 to 5.

Embodiment 7: This embodiment differs from Embodiments 1 to 6 in that the widths of the first tunnel 4-1 and the second tunnel 3-1 are larger than the diameter of the metal pole on the insulating pull rod. Other steps and parameters are the same as one of the specific embodiments 1 to 6.

Embodiment 8: This embodiment is different from Embodiment 1 to Embodiment 7 in that: the width of the turning hole 3-2 is larger than the diameter of the metal rod positioning cross bar on the insulating pull rod. The other steps and parameters are the same as those in the specific embodiments 1 to 1.

Verify beneficial effect of the present invention with following test

Test 1. (Combined with Figures 1, 2 and 3) A grounding wire clamp for this test includes a grounding wire clamp body 1 and a sleeve 2 connected to an insulating pull rod. The grounding wire clamp body 1 is provided with a chuck, and its It is characterized in that the sleeve 2 is composed of a straight tube body 3 and a trumpet tube body 4, the straight tube body 3 and the narrow mouth end of the horn tube body 4 are butted into one structure, and the tube of the horn tube body 4 On the wall, there is a long first channel 4-1 along the axial direction of the trumpet tube body 4, and on the tube wall of the straight tube body 3, there is a second channel 3-1 along the axial direction of the straight tube body 3. 1. The first channel 4-1 communicates with the second channel 3-1. On one side of the closed end of the second channel 3-1, there is a turning channel 3-2 perpendicular to the second channel 3-1. The turning channel 3-2 One end communicates with the second hole 3-1, and the other end of the turning hole 3-2 is provided with a first positioning hole 3-4 and a second positioning hole 3-5 on both sides of the end.

In this test, the ground wire clamp 1 and the sleeve 2 are connected by metal crimping, and the interfaces on both sides are reinforced with rivets.

In this test, the material of the ground wire clip body 1 is cast aluminum alloy.

In this test, the material of sleeve 2 is aluminum alloy.

In this test, the diameter of the flaring end of the trumpet type pipe body 4 is 2 times of the diameter of the narrow mouth end.

In this test, the widths of the first tunnel 4-1 and the second tunnel 3-1 are larger than the diameter of the metal rod vertical rod on the insulating pull rod.

In this test, the width of the turning channel 3-2 is greater than the diameter of the metal rod positioning cross bar on the insulating pull rod.

When installing the ground wire clamp of this test, the metal rod positioning cross bar on the insulating pull rod is stuck in the first positioning hole 3-4.

When removing the ground wire clamp of this test, the metal rod positioning cross bar on the insulating pull rod is stuck in the second positioning hole 3-5.

Conclusion: Install a horn at the root of the circular sleeve of the traditional ground wire clamp to limit the position, increase the success rate of the connection between the metal rod of the insulating pull rod and the sleeve of the ground wire clamp, and make the insulation pull rod and the ground wire clamp quickly when the ground wire is removed. Connection, the connection speed of the insulating rod and the ground clamp has been increased by 600%. It used to take 30 seconds for the fastest connection between the insulating rod and the ground clamp, and 2 minutes for the slowest connection. After installing the horn sleeve, the insulating rod and the ground clamp The connection time of the wire clip is only 5 seconds, which greatly improves the work efficiency, shortens the time for removing the ground wire, saves the switching operation time, and ensures timely power supply. It reduces the labor intensity during the operation and ensures that the operation and maintenance personnel are physically strong. It reduces the possibility of accidentally touching live equipment due to lack of physical strength caused by lifting the insulating pull rod for a long time.

Claims (8)

1. A grounding wire clamp, comprising a grounding conductor clamp body (1) and a sleeve (2) connected with an insulating pull rod, the grounding conductor clamping body (1) is provided with a collet, and is characterized in that the sleeve (2) It is composed of a straight tube body (3) and a trumpet type tube body (4). The tube wall of (4) is provided with a long first channel (4-1) along the axial direction of the trumpet tube body (4), and on the tube wall of the straight tube body (3) along the straight tube body (3) There is a second channel (3-1) in the axial direction, the first channel (4-1) communicates with the second channel (3-1), and is vertical on the side of the closed end of the second channel (3-1) There is a turning hole (3-2) in the second hole (3-1), one end of the turning hole (3-2) communicates with the second hole (3-1), and the other end of the turning hole (3-2) A first positioning hole (3-4) and a second positioning hole (3-5) are arranged on both sides of the end. 2. A ground wire clamp according to claim 1, characterized in that the ground wire clamp body (1) and the sleeve (2) are connected by metal crimping, and the interfaces on both sides are reinforced with rivets. 3. A ground wire clip according to claim 1, characterized in that the material of the ground wire clip body (1) is cast aluminum alloy. 4. A ground wire clamp according to claim 1, characterized in that the material of the sleeve (2) is aluminum alloy. 5. A grounding wire clamp according to claim 1, characterized in that the diameter of the flared end of the trumpet-type pipe body (4) is 1.5 to 2.5 times the diameter of the narrowed end. 6. A grounding wire clamp according to claim 1, characterized in that the diameter of the flared end of the horn-shaped tube (4) is twice the diameter of the narrowed end. 7. A ground wire clamp according to claim 1, characterized in that the widths of the first tunnel (4-1) and the second tunnel (3-1) are larger than the metal rod vertical rod on the insulating pull rod diameter of. 8. A ground wire clamp according to claim 1, characterized in that the width of the turning hole (3-2) is larger than the diameter of the metal rod positioning cross bar on the insulating pull rod.