CN102290737B - Clamping plate type insulated fixing support for leading wire and conducting wire of upper pile head of drop-out fuse - Google Patents

Abstract

The invention discloses a drop safety upper pile head lead wire splint type insulation fixing bracket, which comprises: a bracket splint provided with a longitudinal circular hole, a vertical guide rod arranged in the longitudinal circular hole, and a The radial direction of the hole is provided with the locking bolt of the vertical guide rod; the upper end of the vertical guide rod is hinged with a swing joint with a horizontal round hole, and the insulating hollow horizontal guide rod is set in the horizontal round hole. The locking bolt of the guide bar; the front end of the horizontal guide bar is provided with a wire splint, the front end of which is hook-shaped and can hook the locking lead wire. The present invention is an insulating jig with a radius of 600mm in the spherical space of the working range, which can effectively Fix the free end of the upper lead wire and pull it away from the operating point, which perfectly guarantees the safe operating space required for replacing the fall safety bracket.

Description

Drop insurance upper pile head lead wire splint type insulation fixing bracket

Technical field:

The invention relates to an insulating fixing jig for live work, in particular to an insulating fixing bracket used for moving and fixing the lead wire of a pile head when replacing a drop insurance with live electricity.

Background technique:

The drop insurance is a safety device for preventing short circuit of the distribution transformer on the incoming line channel. The head material is made of copper material.

The entry and exit pile head of the drop insurance is used to connect the outgoing line of the 10kV line and the incoming line of the transformer, which itself is connected in series in the line. The connection wires at both ends of the drop insurance are made of aluminum, so that the drop insurance connected in series on the line has two copper-aluminum joints. The drop insurance is installed bare and exists in the atmosphere containing water vapor, oxygen and dust impurities. The copper-aluminum joint forms a chemical primary battery, and the joint will naturally undergo an electrochemical reaction, and the copper-aluminum joint will form alumina. The conductivity of alumina is poor, and the contact resistance of the copper-aluminum joint increases. When a current passes through, the contact resistance heats up. This phenomenon often leads to the burning of the wiring pile head to cause a circuit breakage and replace the drop insurance.

The distribution line generally adopts a pole-mounted switch to break the line, and a pole-mounted switch has multiple distribution transformers. When we had a power outage to replace the drop insurance for one of the distribution transformers, multiple transformers were out of service at the same time, which not only affected more customers' electricity consumption, but also affected electricity sales. For this reason, we more often adopt live replacement Work in a fall-safe manner.

Because the upper pile head of the drop insurance is connected to the live line, the lead wire of the upper pile head during the operation has always been a bare power point with a voltage of 10kV. This power point exists at the operating point, and the wire is a flexible component that is prone to wind deflection , so there is a greater security risk.

At present, the live replacement of the drop insurance is mainly based on the ground potential live operation. The operator uses an insulating tool to remove the lead wire of the pile head and wind it to the porcelain connection line of the same-phase wire, and then wrap it with an insulating blanket; restore the installation of the lead wire of the pile head That is, unbundle the insulating blanket, and then use insulating tools to lead the wire ends to the replaced drop insurance piles and fix them. During this process, the workers are close to the high-voltage electrified body, with large body displacement and movement, and the protection range of insulating tools is small, which has a great risk of electric shock, high labor intensity, and difficulty in high-altitude operations with large displacement.

Invention content:

In order to overcome the defects of the prior art, the purpose of the present invention is to provide a drop insurance upper pile head lead wire splint type insulating fixing bracket, which is fixed on the insurance cross arm and has a spherical space with a radius of 600mm. Insulation fixture, which can effectively fix the free end of the upper lead wire and pull it away from the operating point, perfectly guarantees the safe operating space required for the replacement of the fall safety bracket.

The present invention solves technical problem and adopts following technical scheme:

The splint-type insulating fixing bracket for the lead wire on the pile head of the drop insurance includes:

Clamp and fix the bracket splint on the fall safety angle steel, and the bracket splint is provided with a longitudinal round hole;

A vertical guide rod arranged in the longitudinal round hole, and a first locking bolt of the vertical guide rod is provided on the bracket splint along the radial direction of the longitudinal round hole;

A swing joint is hinged on the upper end of the vertical guide rod through bolts and nuts, and a transverse circular hole is arranged on the swing joint, and an insulating hollow horizontal guide rod is arranged in the transverse circular hole, and on the swing joint A second locking bolt of the horizontal guide rod is provided along the radial direction of the transverse circular hole;

A wire splint is arranged at the front end of the horizontal guide bar, and the front end of the wire splint is hook-shaped, and a locking screw capable of clamping the lead wire in the hook is arranged on the wire splint.

Structural features of the present invention also are:

A round hole is opened on the wire splint, and the wire splint is sleeved on the horizontal guide rod through the round hole, and a third locking bolt is arranged on the wire splint along the radial direction of the round hole. The wire splint is perpendicular to the axial direction of the horizontal guide rod.

Compared with the prior art, the beneficial effects of the present invention are reflected in:

The insulation bracket for fixing the lead wire of the drop insurance on the pile head is a kind of insulation clamp fixed on the insurance cross arm and has a spherical space with a radius of 600mm in the working range. It can effectively fix the free end of the upper lead wire and connect it Towing away from the operating point perfectly guarantees the safe working space required for replacing the fall safety bracket.

Replacement of the drop insurance on the pole has all the risks of two special operations, high-altitude operation and live-line operation. The working area is narrow, and there are many live lines in the local area, the voltage level is high, and the electric shock damage is great. Using the professional operating mechanism of the present invention to extend the control range of human limbs can effectively reduce the range of body activities, reduce work intensity, reduce safety risks, improve labor efficiency, and fully guarantee safety and reliability.

Description of drawings:

Fig. 1 is a structural representation of the present invention; Fig. 2A, 2B are respectively the front view and the right side view of the vertical guide bar; Fig. 3 is the structural diagram of the horizontal guide bar; Fig. 4A, 4B are respectively the front view and the bottom view of the wire splint; 5A and 5B are a front view and a right view of the swing joint, respectively.

Symbols in the figure: 1 bracket splint, 2 longitudinal round hole, 3 vertical guide rod, 4 first locking bolt, 5 swing joint, 6 horizontal round hole, 7 horizontal guide rod, 8 wire splint, 9 locking screw, 10 circle Holes, 11 angle steel, 12 leads.

The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings.

Detailed ways:

Embodiment: Referring to Fig. 1-Fig. 5B, the bracket splint 1 is clamped and fixed on the angle steel 11 of the drop insurance, and a longitudinal round hole 2 is provided on the bracket splint 1; the vertical guide rod 3 is inserted into the longitudinal round hole 2 to be able to ° rotation, the end of the bracket splint is provided with the first locking bolt 4 along the radial direction of the longitudinal circular hole, which can lock the vertical guide rod 3.

A swing joint 5 is hinged on the upper end of the vertical guide rod 3 through bolts and nuts, and a transverse circular hole 6 is arranged on the swing joint 5. The axial direction of the transverse circular hole 6 is parallel to the swing direction of the swing joint. Insulated and hollow horizontal guide rod 7 is plugged in the middle, the horizontal guide rod 7 can rotate 360° in the transverse circular hole 6 and can swing up and down along with the swing joint 5, and the radial direction of the transverse circular hole 6 is set on the swing joint 5. There is a second locking bolt that can lock the horizontal guide bar 7.

The front end of the horizontal guide rod 7 is provided with a wire splint 8, which is hook-shaped, and a locking screw 9 is provided on the wire splint 8, so that the lead wire 12 can be clamped in the hook.

In the specific setting, a round hole 10 is opened on the wire splint 8, and the wire splint is sleeved on the horizontal guide rod 7 with the round hole 10, and a third locking bolt is arranged on the wire splint along the radial direction of the round hole 10. , the wire splint 8 can be locked on the horizontal guide rod 7, and the wire splint 8 is perpendicular to the axial direction of the horizontal guide rod 7.

In use, the bracket splint 1 is clamped and fixed on the angle steel 11, the vertical guide rod 3 is pre-tightened in the round hole of the bracket splint 1, and the rear end of the horizontal guide rod 7 is held in hand. At this time, the horizontal guide rod can move up and down with the swing joint 5. Swing, also can swing laterally in the horizontal range along with the rotation of vertical guide rod 3, promptly the front end of horizontal guide rod can arrive at any point in the spherical space of radius 600mm, hook up and fall with the hook of wire splint 8 front ends this moment. Secure the lead wire 12 on the pile head, and then use the locking screw 9 to lock the lead wire 12 in the hook of the wire splint 8, then release the fixing nut on the pile head on the lead wire, turn or swing the horizontal guide rod, and move the live wire away from the working range , to achieve the goal of safe operation. The professional operating mechanism extends the control range of human limbs, which can effectively reduce the range of body activities, reduce work intensity, reduce safety risks, improve labor efficiency, and fully guarantee safety and reliability.

Claims (2)

1. The splint-type insulating fixing bracket for the lead wire on the pile head of the drop insurance is characterized in that it includes: Clamping and fixing the bracket splint (1) on the fall safety angle steel, the bracket splint (1) is provided with a longitudinal round hole (2); The vertical guide rod (3) is set in the longitudinal round hole (2), and the vertical guide rod (3) is arranged on the bracket splint (1) along the radial direction of the longitudinal round hole (2) The first locking bolt (4); A swing joint (5) is hinged on the upper end of the vertical guide rod (3) through bolts and nuts, and a horizontal round hole (6) is provided on the swing joint (5), and an insulated hollow horizontal guide rod (7) Set in the transverse circular hole (6), the second locking bolt of the horizontal guide rod (7) is provided on the swing joint (5) along the radial direction of the transverse circular hole (6); A wire splint (8) is provided at the front end of the horizontal guide bar (7), and the front end of the wire splint (8) is hook-shaped, and a wire splint (8) is provided on the wire splint (8) to clamp the lead wire Locking screw (9) inside the hook. 2. The splint-type insulating fixing bracket for the lead wire on the pile head of the drop insurance according to claim 1, characterized in that: The wire splint (8) is provided with a round hole (10), and the wire splint is sleeved on the horizontal guide rod (7) through the round hole, and the wire splint is inserted along the edge of the round hole (10) on the wire splint. A third locking bolt is arranged radially, and the wire splint (8) is perpendicular to the axial direction of the horizontal guide rod (7).

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