CN209389559U - Power transmission line ground wire presss from both sides auxiliary installation device - Google Patents

Abstract

The utility model relates to an auxiliary installation device for grounding clamps of power transmission lines. It is characterized in that it includes an L-shaped grounding clamp connecting plate (1), two through holes (11) are opened on the horizontal surface of the grounding clamp connecting plate (1), and the grounding clamp connecting plate ( A through hole (11) is opened on the vertical surface of 1) so as to be connected with the grounding clamp through fasteners, and metal reinforcing ribs (14) are respectively provided on both sides of the bottom of the horizontal surface of the grounding clamp connecting plate (1) ; It also includes a double-column type connection plug (2), on which two post-type connection plugs (2) are provided with two column heads (211), and on the two column heads (211) along the vertical direction of the column head (211) respectively A pin hole (221) is provided. Significantly expand the horizontal operating radius of the grounding clamp installation work of the transmission line, especially when the horizontal distance between the conductor and the tower body is relatively long, the installation accuracy, convenience and work efficiency of the grounding clamp are improved.

Description

Auxiliary Installation Device for Grounding Clamps of Transmission Lines

technical field

The utility model relates to an auxiliary installation device for grounding clips of power transmission lines.

Background technique

The development of my country's power grid continues to grow. In order to improve the reliability of power supply, the power company conducts targeted maintenance work on power transmission and transformation equipment every year, and the transmission line is the only channel for power transmission, which plays a very important role in the power grid. In order to ensure the safety of operators, it is necessary to install grounding wires at both ends of the line or at a certain tension section during the maintenance of overhead transmission lines. At present, the grounding wires used on the line are all portable short-circuit grounding wires. When hooking up, it is necessary to rely on the insulating rope to control the clamp to clamp the wires. Arranged vertically, the larger the corner, the larger the horizontal offset distance between the wire, jumper and cross arm. In particular, the electrical clearance of ultra-high voltage and ultra-high voltage lines is large, and the horizontal offset distance can even reach 2-3 meters. In addition, the outdoor weather conditions are complicated, and it is extremely difficult for the staff to install the grounding clamp.

At present, there are few researches on the auxiliary devices for installing grounding clamps on ultra-high and ultra-high voltage large-rotation-angle strain towers. Different ways of bundling and unbundling, none of these methods can accurately locate the wires directly, and the operation is complicated, which does not meet the needs of maintenance personnel for on-site operations. In the corner tension tower structure, because the wire is not directly below the cross arm, when the maintenance operator hangs the ground wire, he needs to stand on the cross arm of the transmission tower and repeatedly throw the ground wire clip down until the ground wire clip reaches the correct position Only when the ground wire can be successfully connected, there are disadvantages such as complicated operation, high difficulty, and high risk factor.

Utility model content

The purpose of this utility model is to provide an auxiliary installation device for grounding wire clamps of transmission lines, which is an auxiliary device suitable for installing grounding wire clamps on the tower head of a large-rotation-angle strain-resistant tower of a transmission line, which can enable operators to The operation of hanging the ground wire on the tower becomes simple from tedious, which improves the safety, convenience, accuracy and efficiency of the operation.

An auxiliary installation device for grounding clamps of transmission lines, which is special in that it includes an L-shaped grounding clamp connecting plate, two through holes are opened on the horizontal surface of the grounding clamp connecting plate, and the grounding wire There is a through hole on the vertical surface of the clamp connecting plate to connect with the grounding clamp through fasteners, and metal reinforcement ribs are respectively provided on both sides of the bottom of the horizontal surface of the grounding clamp connecting plate; it also includes a double-column connecting plug , there are two studs on the double-column connection plug, and a pin hole is respectively provided on the two studs along the vertical direction of the studs, the double-column connection plug is inserted through the two studs and passes through the aforementioned grounding There are two through holes on the horizontal surface of the clamp connection plate, and spring leaf anti-drop pins are installed in the pin holes on the two studs so that the ground clamp connection plate and the double-column connection plug can be detachably installed together; the aforementioned One end of the double-column connecting plug is fixedly connected to the metal buckle cover through the metal connecting rod, and the metal buckle cover is detachably connected to the telescopic hollow insulating operating rod. One end passes through the through hole of the metal buckle cover and is connected with the pull ring at the end of the anti-dropping pin of the spring leaf.

The metal reinforcing ribs on both sides of the bottom of the connecting plate of the grounding clamp are stepped, and the width of the gap between the metal reinforcing ribs on both sides is the same as that of the double-column connecting plug.

Wherein, a spring leaf is installed at the rear part of the pin body of the spring leaf anti-dropout pin, and the height of the end of the spring leaf is higher than the height of the pin hole on the post of the double-column type connection plug.

It has been proven through trials that the use of this device significantly expands the horizontal operating radius of the installation of the transmission line grounding clamp, especially when the horizontal distance between the conductor and the tower body is relatively long, and improves the installation accuracy, convenience and work efficiency of the grounding clamp . The device of the utility model is an auxiliary installation device for grounding wire clamps suitable for large-rotation-angle strain towers, which can accurately carry out the operation of hanging the grounding wire, and solves the complex operation, high difficulty, and large risk factor in the actual operation of the existing power grid. question.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the ground wire clip connecting plate 1 in the utility model;

Fig. 3 is a schematic diagram of the structure of the double-column connecting plug 2 in the utility model;

Fig. 4 is a structural schematic diagram of the anti-dropping pin 3 of the spring leaf in the utility model.

Detailed ways

Embodiments of the present utility model are described in detail below. It should be emphasized that the following descriptions are only illustrative, not intended to limit the scope of the present utility model and its application.

Example 1:

As shown in Figures 1, 2, 3, and 4, an auxiliary installation device for grounding clamps of transmission lines includes a grounding clamp connecting plate 1 and a double-column connecting plug 2 connected to the grounding clamp connecting plate 1 for use in Tighten the anti-dropping pin 3 of the spring leaf that connects the connecting plate 1 of the grounding clamp with the double-column type connecting plug 2 , and the insulating operating rod 4 connected with the double-column type connecting plug 2 .

The ground clamp connection plate 1 is connected to the ground clamp bolt through the through hole 11; the two column heads 211 of the double column type connecting plug 2 are fastened to the two through holes 11 of the ground clamp connection plate 1; the double column After the fastening of the connecting plug 2 and the connecting plate 1 of the grounding wire clamp is completed, the spring leaf anti-dropping pin 3 is inserted into the two through holes 11 of the two column heads 211 of the double-column connecting plug 2 to prevent the double-column connecting plug 2 from being grounded. The clamp connection plate 1 falls off; the spring leaf 311 produces a positive pressure on the inner wall of the through hole 11 of the column head 211, and strengthens the friction force between the spring leaf anti-dropping pin 3 and the through hole 11, so as to ensure that the spring leaf anti-dropping pin 3 does not fall off when the grounding wire is connected. will slide out from the through hole 11.

The telescopic hollow insulating operating rod 4 is connected to the metal buckle cover 25 at the end of the double-column connecting plug 2; The through hole 11 of the metal buckle cover 25 at the end passes a stay cord, and the stay cord is connected to the draw ring 32 at the end of the spring leaf anti-off pin 3, and pulling the stay cord makes the spring leaf anti-off pin 3 withdraw from the through hole 11, and the double column Type connecting plug 2 is detachable from ground clamp connecting plate 1.

The ground clamp connection plate 1 adopts an L-shaped structure, one through hole 11 is arranged in one metal plate, and two through holes 11 are arranged in the other side metal plate; There are metal ribs 14 on both sides; the diameter of the through hole 11 is slightly larger than the diameter of the column head 211 of the double-column type connecting plug 2, the gap of the metal reinforcing rib 14 is slightly larger than the width of the double-column type connecting plug 2, and the double-column type connecting plug 2 and the When the ground clamp connecting plate 1 is assembled, the double-column connecting plug 2 passes through the gap of the metal reinforcing rib 14 .

The double column type connection plug 2 adopts two column heads 211 as the connection and fixing structure, and the two column heads 211 respectively have a through hole 11 consistent with the arrangement direction of the column heads 211, and the metal button cover 25 connects with the double column through the metal connecting rod 23. Type connecting plug 2 bodies are welded together.

The spring leaf anti-dropping pin 3 is characterized in that the width and height of the front part of the pin body are equivalent to the size of the through hole 11 on the column head 211, while the width of the rear part of the pin body is equivalent to that of the through hole 11, and the height of the rear part is slightly lower than that of the through hole 11. Hole 11; spring leaf 311 is installed in the rear part of the pin body, and the height of the end of spring leaf 311 is slightly greater than the height of through hole 11, preventing spring leaf 311 from snapping into through hole 11; The middle part of the body uses an arc-shaped structure to transition the size difference between the front and rear parts of the pin body to prevent jamming when pulling the pull cord to withdraw the pin.

The telescopic hollow insulating operating rod 4 has a hollow structure, and the metal buckle cover 25 has a through hole 11, the interior of the telescopic hollow insulating operating rod 4 can be used for laying a pull cord, and the through hole 11 can be used for the pull cord to pass in/out.

Using method and working principle of the present utility model are:

Before ascending the tower, the double-column connecting plug 2 and the telescopic hollow insulating operating rod 4 have formed a non-detachable connection through the metal buckle cover 25 . Stay cord and spring leaf anti-drop pin 3 have been connected, and pass through the through hole 11 on the metal buckle cover 25 along the telescopic hollow insulating operating rod 4 inside laying, pass from the telescopic hollow insulating operating rod 4 bottoms. The grounding clamp connecting plate 1 is firmly connected with the grounding clamp through bolts.

The operator carries the grounding wire clip connection plate 1, the double-column connecting plug 2, the spring leaf anti-dropping pin 3 and the telescopic hollow insulating operating rod 4, as well as the grounding wire clip and insulating rope on the cross-arm of the strain tower, and takes safety measures , one end of the grounding wire is reliably grounded.

At the position of the cross arm of the pole tower, the grounding clamp is terminated with an insulating rope, and the other end of the insulating rope is tied to the tower body.

Buckle the studs 211 of the double-pillar connection plug 2 into the two through holes 11 of the connecting plate 1 of the grounding clamp, and then insert the spring leaf anti-dropping pins 3 into the two inner through holes 11 of the two studs 211 in turn until the end of the spring leaf 311 Contacting the column head 211 ensures that the spring piece 311 exerts proper pressure on the through hole 11 . At this point, the auxiliary installation device and the grounding clamp have been fully connected.

Ensure that the jaws of the grounding wire clamp are facing the wire, and the operator holds the telescopic hollow insulating operating rod 4 and continues to extend along the direction of the wire until the grounding wire clamp reaches the position of the wire.

Operate the retractable hollow insulating operating rod 4 to make the grounding wire clamp contact with the wire, gently knock off the support piece on the grounding wire clamp, and the grounding wire is accurately hooked to the wire.

When receiving the ground clamp auxiliary installation device, pull the pull cord passing through the bottom of the telescopic hollow insulating operating rod 4, so that the spring leaf anti-dropping pin 3 is completely withdrawn from the through hole 11 of the double-column connecting plug 2.

Gently shake the telescopic hollow insulating operating rod 4 to disengage the two column heads 211 of the double-column connecting plug 2 from the two through holes 11 of the grounding clamp connecting plate 1, retract the telescopic hollow insulating operating rod 4, and complete Ground clamp installation work.

After the maintenance work is over, retract the ground wire clamp by pulling the insulating rope directly.

The utility model extends the controllable operating range of the operator by using the telescopic hollow insulating operating rod 4, establishes a direct connection between the operator and the operating object far away from the operating position, and improves the controllability of the operation. By using the fastening structure of the grounding clamp connection plate 1 and the double-column connection plug 2, the flexibility and convenience of using the work tool are improved. The use of the spring leaf anti-dropping pin 3 to quickly enter and withdraw the buckle method improves the reliability of the operation tool.

The above content is a further detailed description of the utility model in combination with specific/preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the utility model belongs, on the premise of not departing from the concept of the utility model, they can also make some substitutions or modifications to the described embodiments, and these substitutions or modifications should be Be deemed to belong to the protection scope of the present utility model.

Claims (3)

1. a kind of power transmission line ground wire presss from both sides auxiliary installation device, it is characterised in that: the earthing clamp connecting plate (1) including L-type, There are two being opened on the horizontal surface of the earthing clamp connecting plate (1) through-hole (11), and hanging down in the earthing clamp connecting plate (1) A through-hole (11) is provided with to connect with earthing clamp by fastener, in the earthing clamp connecting plate (1) on straight surface Horizontal surface two sides of the bottom are respectively equipped with metal reinforcing (14)；Further include Double-pillar connection plug (2), is connected in the Double-pillar Plug (2) is equipped with two column caps (211), and the vertical direction on two column caps (211) along column cap (211) is each provided with one A pin hole (221), which, which is inserted by two column caps (211) and passes through aforementioned earthing clamp, connects Two through-holes (11) on fishplate bar (1) horizontal surface are equipped with spring leaf in the pin hole (221) on two column caps (211) Locking pin (3) is to which earthing clamp connecting plate (1) and Double-pillar connection plug (2) to be removably mounted at together；It is above-mentioned double Column type connection plug (2) one end is fixedly connected by metal tie rods (23) with metal buckle (25), the metal buckle (25) and Telescopic hollow insulating bar (4) is detachably connected, and is installed with drawstring among the telescopic hollow insulating bar (4), should One end of drawstring passes through from the through-hole (11) of metal buckle (25) and connects with the pull ring (32) of spring leaf locking pin (3) tail portion It connects.

2. power transmission line ground wire as described in claim 1 presss from both sides auxiliary installation device, it is characterised in that: wherein earthing clamp connects The metal reinforcing (14) of fishplate bar (1) two sides of the bottom is ladder-like, and the gap between the two sides metal reinforcing (14) Width and Double-pillar connection plug (2) it is of same size.

3. power transmission line ground wire as described in claim 1 presss from both sides auxiliary installation device, it is characterised in that: wherein anti-in spring leaf The shank rear portion of out of stock (3) is equipped with spring leaf (311), and the height of spring leaf (311) end is connected higher than Double-pillar The height of pin hole (221) on the column cap (211) of plug (2).