CN107732767A - The adjustable pillar insulator live replacing device of gear-rack drive - Google Patents

Abstract

The invention discloses an adjustable pole-type insulator live replacement device driven by a rack and pinion, which is detachably connected to the angle steel of the insulating cross arm, and includes an insulating bracket, a fixing seat and a wire supporting plate arranged on the insulating bracket. The fixed seat and the angle steel of the insulating cross arm are fixed by connecting bolts. The wire support plate is used to lift the wire up and separate from the insulator of the insulating cross arm. The fixed seat is provided with a lifting mechanism that drives the insulating support to rise and fall relative to the fixed seat , the lifting mechanism includes a gear, the gear is mounted on a rotating shaft, the rotating shaft is rotatably connected to a fixed seat, and the rotating shaft is connected with a handle that drives the rotating shaft to rotate. The invention can easily replace the simple insulation bracket of the column insulator with electricity, not only can effectively shorten the emergency repair time of electricity, but also can greatly reduce the operation cost.

Description

Adjustable post insulator live replacement device driven by rack and pinion

technical field

The invention relates to an electric power tool, in particular to an insulator replacement tool.

Background technique

At present, insulator arm trucks are routinely used to replace post insulators with electricity, and a small crane is used to lift the wires, and then the post insulators are replaced. There are following deficiencies and problems in this operation scheme:

1. A small number of 10kV poles are set up in narrow streets or on the edge of rice fields, so that the insulated bucket truck cannot enter, and the replacement of post insulators with power on will not be possible;

2. The parking place of the insulated bucket arm truck must be leveled and compacted. If the insulated bucket truck is parked on an uneven ground or works on a soft ground, during the process of lifting the wires, the force on the boom of the bucket truck will cause the vehicle to be locked, and the ground operator will cause errors during the unlocking process under mental stress. operate;

3. After the wire is lifted, the wire and the vehicle become a whole. When the operator replaces the post insulator, the size of the operation range will cause the arm to swing, and the wire will swing accordingly. There is a risk of phase-to-phase short circuit in bare conductor installations with large line spans and small phase-to-phase distances;

4. The load capacity of the lifting wire of the small crane depends on the parking situation of the insulated bucket truck and the angle between the insulating arm and the working surface, which directly affects the load capacity of the lifting wire of the small crane. For the span of overhead lines and the type and size of conductors, the person in charge of the general work will not calculate how much capacity is actually required to lift the load of the conductors;

5. In actual work, most of the work teams have removed the small hanging device. Random placement may cause damage to the insulating rope and blockage of the insulating oil return pipe, resulting in ignorance of the maintenance of the small hanging rope, load test, etc.;

6. When the small crane is lifting the wire and bearing the wire tension, the insulating arm of the insulating bucket arm truck will not be able to adjust the height and horizontal position. Only by adjusting the position of the working bucket, when replacing the three-phase wires for triangular arrangement or horizontal arrangement overhead distribution It is difficult for the staff to find a suitable working position for the intermediate phase post insulator of the power line device;

7. When replacing the middle and lower column insulators on the vertically arranged double-circuit sympathetic erection of the straight pole device, the space for the insulated arm truck to move is narrow, and the safety distance from the upper cross arm is insufficient;

8. On a straight corner pole less than 15°, there is a danger of line running because the wire has a horizontal pull pointing to the inner corner side. If the insulated bucket truck is at the outer corner, the small crane will bear the outward horizontal pulling force, which is prohibited when the insulated bucket truck is in use; while the insulated bucket truck is at the inner corner, the wire will touch the insulating bucket, resulting in The safety distance is insufficient, and the horizontal lateral force of the insulating bucket may damage its level adjustment device;

9. When the line span is large and the temperature is low, the lifting wire of the small boom or strut will be subjected to a large downward force, which may exceed the maximum rated load.

To sum up, there are many technical problems and potential safety hazards in replacing post insulators with insulated bucket trucks.

Contents of the invention

The technical problem to be solved by the present invention is to provide a rack-and-pinion driven adjustable post-type insulator live replacement device, which solves the technical problems and potential safety hazards existing in the traditional replacement of post-type insulators with insulating bucket trucks.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: an adjustable pole-type insulator live replacement device driven by a rack and pinion, which is detachably connected to the angle steel of the insulating cross-arm, including an insulating bracket and a fixing seat on the insulating bracket And the wire support plate, the fixed seat and the angle steel of the insulating cross arm are fixed by connecting bolts, the wire support plate is used to lift the wire up and separate the wire from the insulator of the insulating cross arm, and the fixed seat is equipped with a drive The lifting mechanism for the insulation bracket to lift relative to the fixed seat, the lifting mechanism includes gears, the gears are installed on the rotating shaft, the rotating shaft is connected to the fixed seat in rotation, the rotating shaft is fixedly connected with a handle that drives the rotating shaft to rotate, and the insulating A rack meshed with the gear is vertically arranged on the bracket.

Preferably, the fixing base is fixed to the vertical side plate of the insulating cross-arm angle steel through vertical connecting bolts, and the fixing base is fixed to the horizontal side plate of the insulating cross-arm angle steel through horizontal connecting bolts.

Preferably, the insulating support includes a support rod made of U-shaped steel and two side-by-side support plates welded and fixed on both sides of the upper part of the support rod.

Preferably, the rack is fixed inside the U-shaped steel.

Preferably, two thread support plates are arranged side by side and vertically intersect with the two support plates, and the support plates are provided with through holes for the thread support plates to pass through.

Preferably, the wire support plate is provided with a wire groove for accommodating wires and a safety buckle for fastening the wires in the wire groove.

The technical scheme adopted in the present invention, combined with the characteristics of live work on 10kV lines, meets the requirements of live work on distribution lines, and can easily replace the simple insulating bracket of the column insulator with live electricity and optimize the combination, which can not only effectively shorten the time for live emergency repairs, but also significantly Reduce operating costs, improve the safety and reliability of live work, reduce power loss, and greatly guarantee the safe operation of transmission lines.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

Fig. 1 is the front view structure schematic diagram of the present invention;

Fig. 2 is a side view structural representation of the present invention;

Fig. 3 is a schematic top view of the structure of the present invention.

detailed description

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The present invention is used to replace the post-type insulator on the insulating cross-arm with electricity, as shown in Fig. 1 to Fig. 3, the adjustable post-type insulator live replacement device driven by the rack and pinion, which is detachably connected with the angle steel 4 of the insulating cross-arm, It includes an insulating support 1, a fixing seat 2 and a wire supporting plate 3 arranged on the insulating support 1, the fixing seat 2 and the angle steel 4 of the insulating cross arm are fixed by connecting bolts 22, and the fixing seat 2 is provided with a driving insulating support 1. A lifting mechanism that lifts relative to the fixed base 2, the lifting mechanism includes a gear 21, the gear 21 is installed on a rotating shaft, the rotating shaft is connected to the fixing base 2 in rotation, and the rotating shaft is connected with a handle 211 that drives the rotating shaft to rotate, A rack 11 meshing with a gear 21 is arranged vertically on the insulating support 1 . By adjusting the height of the insulating support 1, the wire support plate 3 lifts the wire 5 up, thereby replacing the post insulator 41 to bear the wire 5, so that the wire 5 is separated from the post insulator 41 of the insulating cross arm, and the operation of replacing the post insulator 41 is realized. .

Wherein, the fixing base 2 is fixed to the vertical side plate of the insulating cross-arm angle steel 4 through vertical connecting bolts, and the fixing base 2 is fixed to the horizontal side plate of the insulating cross-arm angle steel 4 through horizontal connecting bolts. The lock nut ends of the vertical connecting bolts and horizontal connecting bolts are connected with movable claws. After the lock nuts are screwed tightly, the movable claws can be firmly grasped and fixed on the horizontal side plate and the insulating cross-arm angle steel. The edge of the vertical side plate makes the fixing seat 2 reliably fixed on the angle steel 4 of the insulating cross arm, and has the advantages of fast fixing and convenient disassembly.

In this embodiment, the insulating support 1 includes a support rod made of U-shaped steel and two side-by-side support plates 12 welded and fixed on both sides of the upper part of the support rod. The rack 11 is fixed inside the U-shaped steel material, and can be connected by welding, bolts, or other connection methods. Two thread support plates 3 are arranged side by side and vertically intersect with two support plates 12. The support plate 12 is provided with a through hole for the thread support plate 3 to pass through, and the through hole can be fixed by welding.

In addition, the wire support plate 3 is provided with a wire groove for accommodating wires and a safety buckle 31 for fastening the wires 5 in the wire grooves to prevent the wires 5 from falling off.

Select a suitable position on the insulating cross arm, use the connecting bolt 22 on the fixing seat 2 to install the insulating bracket 1 on the angle steel 4 of the insulating cross arm, the wire support plate 3 supports the wire 5, and buckle the safety buckle 31 to prevent the wire 5 Fall off, untie the wire binding, swing the handle 211, use the rack and pinion lifting combination to lift the wire 5 to a suitable height, replace the column insulator, the safety lock 212 is provided on the fixing seat 2, after lifting the wire 5 to a suitable height , the gear can be locked by the safety lock 212.

The effect that the present invention can achieve:

1. Developed and completed the height-adjustable insulating support device that meets the requirements of live operation of distribution lines;

2. Meet the electrical performance requirements of 10kV live working;

3. The rated load of the insulating support is 1.5KN;

4. The lifting range of the insulating support is 300mm;

5. Improve work efficiency, the time for replacing post insulators is reduced from 120 minutes to 45 minutes, and the operation can be completed by only one operator instead of two.

The invention solves the technical problems and potential safety hazards existing in the traditional replacement of column insulators with insulated bucket arm trucks, effectively shortens the time for live emergency repairs, greatly reduces operating costs, improves the safety and reliability of live work, and reduces power supply losses. It greatly guarantees the safe operation of the transmission line.

Except above-mentioned preferred embodiment, the present invention also has other implementation modes, those skilled in the art can make various changes and distortions according to the present invention, as long as not departing from the spirit of the present invention, all should belong to the defined in the claims of the present invention scope.

Claims (6)

1. the adjustable pillar insulator live replacing device of gear-rack drive, the angle steel of itself and insulator crossarm detachably connects Connect, it is characterised in that：Fixed seat and cable inlet bracket including insulating support and on insulating support, the fixed seat and insulation The angle steel of cross-arm is fixed by connecting bolt, and the cable inlet bracket, which is used to lifting wire, to be risen and make wire and the insulation of insulator crossarm Son separation, the fixed seat are provided with the elevating mechanism that driving insulating support is relatively fixed seat lifting, and the elevating mechanism includes Gear, the gear are installed in rotating shaft, and the axis of rotation is connected in fixed seat, and the rotating shaft is fixedly connected with band turn The handle that axle rotates, the rack engaged with gear is vertically provided with the insulating support.

2. the adjustable pillar insulator live replacing device of gear-rack drive according to claim 1, its feature exist In：The fixed seat is fixed by the vertical side plate of vertical connecting bolt and insulator crossarm angle steel, and the fixed seat passes through level The horizontal side plate of connecting bolt and insulator crossarm angle steel is fixed.

3. the adjustable pillar insulator live replacing device of gear-rack drive according to claim 1, its feature exist In：The insulating support includes cradling piece made of U-shaped steel material and is fixedly welded on two pieces of cradling piece top both sides side by side The supporting plate of setting.

4. the adjustable pillar insulator live replacing device of gear-rack drive according to claim 3, its feature exist In：The rack is fixed on inside U-shaped steel material.

5. the adjustable pillar insulator live replacing device of gear-rack drive according to claim 3, its feature exist In：The cable inlet bracket is provided with two pieces and intersected vertically with two pieces of supporting plates side by side, and the supporting plate is provided with and passed through for cable inlet bracket Through hole.

6. the adjustable pillar insulator live replacing device of gear-rack drive according to claim 1, its feature exist In：The cable inlet bracket is provided with the safety fastener for accommodating the metallic channel of wire and being fastened on wire in metallic channel.