CN101615766A - A new type of ladder used for maintenance work of high voltage circuit breaker - Google Patents

Abstract

The utility model relates to a new type of ladder used for inspection and maintenance of high-voltage circuit breakers, which is suitable for climbing facilities for the inspection and maintenance of high-voltage circuit breakers of electric equipment. It consists of an insulated ladder and a base. The insulated ladder is equipped with a pedal that can be turned on both sides and a safety belt buckle. Fixed in different positions, the base is made of polygonal pin holes, cylindrical pins, metal brackets, splints and bolts. The utility model has the advantages of simple structure, convenient transportation and storage, reliable use, and can meet the on-site high-voltage circuit breaker maintenance work. Guarantee the normal operation safety of maintenance personnel and effectively prevent falling accidents from heights.

Description

A new type of ladder used for maintenance work of high voltage circuit breaker

Technical field:

The invention belongs to the technical field of maintenance electric equipment ascending operation facilities, and in particular relates to a new type of ladder for ascending and repairing high-voltage circuit breakers of electric equipment.

technical background:

During the inspection and maintenance of high-voltage circuit breakers of electric power equipment, major accidents of casualties sometimes occur due to the breakage of porcelain columns. Therefore, the State Grid Corporation of China strictly prohibits climbing insulating porcelain bottles during the maintenance of electric power equipment, and requires in the Production Ann [2004] No. Climbing porcelain vases and hanging safety belts", and 13.6 of the "State Grid Corporation of Electricity Safety Work Regulations" stipulates that safety belts must not be hung high, and it is forbidden to hang on moving or unstable objects. Therefore, domestic maintenance of electrical equipment can only be done with the help of cranes or floor-standing maintenance platforms. The former requires a large space, is cumbersome to use, and takes time and labor.

Invention content:

In order to solve the problem of people climbing insulating porcelain bottles and safety belts during maintenance of high-voltage circuit breakers, the invention provides a new type of ladder that can ensure personal safety, reduce labor intensity, improve work efficiency, and improve equipment maintenance quality.

The solution to the technical problem of the present invention is: a new type of ladder used for maintenance of high-voltage circuit breakers, which is composed of an insulating ladder, a reinforced support and a base. There is a rotatable reinforced support, and the base is composed of a fixed splint and a metal plate. Set the pedals on the ladder made of insulating materials. The pedals are equipped with diagonal braces and limit stops. Through the inner rails on both sides of the ladder rails, the pedals can be stowed or kept in a horizontal state. The pedals can be moved to the other side as needed. Turn over, people go up and down the ladder, and stand on the pedals to work without climbing the insulating porcelain bottle; the lower part of the ladder is connected with the cylindrical pin used for the reinforcement support of the ladder, and the bottom end of the reinforcement support is connected with the base with a cylindrical pin, and both ends can be rotated; the ladder The lower end is equipped with a hand-pull automatic reset multi-edge pin, which is inserted into the pin hole on the base to reduce the shaking caused by the accumulation of the gap between the rotating shaft; the ladder, the reinforced support, and the base form a stable right triangle; when the base is kept stationary In some cases, the vertical position of the ladder can be changed in the opposite direction through a simple operation, and the maintenance work of the adjacent fracture of the circuit breaker can be carried out; in order to prevent people from falling from high altitude, a safety belt buckle is installed on the top of the ladder.

The above-mentioned base is welded into a whole by a metal plate, a multi-edge pin hole seat for stabilizing the ladder, a cylindrical pin hole seat for connecting and strengthening supports, and an upper splint, etc., and the lower splint is fixed on the circuit breaker frame by a screw, and no special expansion and maintenance are required. Site: Install an accessory box in the vacant position of the metal plate to store accessories.

One end of the above splint is opened with a long hole, and the other end is drilled with a row of round holes for selection on different specifications of the circuit breaker frame; the long holes are made into alveolar shapes, which are engaged with the gaskets with alveoli and locked. The screw prevents slipping.

The above-mentioned multi-edge pin with automatic reset by hand is composed of a return spring, a shell, a pin and a handle, and the pin has more than three edges and corners.

In order to reduce the weight of the base, process holes can be set on the plane of the base.

The beneficial effect of the present invention is to provide a new type of ladder for maintenance of high-voltage circuit breakers. The base is fixed once between the circuit breakers, and the maintenance of two adjacent fractures can be carried out after a simple position change, which solves the problem of personnel climbing porcelain bottles and The problem of hanging the seat belt ensures the safety of maintenance personnel during normal operation, and is convenient to use and simple to operate, while improving labor efficiency and saving production costs.

Description of drawings

Accompanying drawing 1 is a structural representation of the present invention.

Accompanying drawing 2 is the base schematic diagram of the present invention.

Accompanying drawing 3 is the splint schematic diagram of the present invention.

Accompanying drawing 4 is a sectional view of the polygonal pin of automatic reset.

Accompanying drawing 5 is a schematic diagram of the use of the present invention.

Accompanying drawing 6 is the schematic diagram of the application example of the present invention

In accompanying drawing 1, 1, seat belt buckle, 2, double-sided pedal, 3, pedal brace, 4, rotating shaft, 5, hand-pull automatic reset polygonal pin, 6, strengthen support, 7, cylindrical pin, 8 , rotating shaft, 9, step, 10, ladder gear, 11, track, 12, limit stop gear.

In accompanying drawing 2, 1, have the elongated hole of alveolar, 2, have the spacer of alveolar, 3, nut, 4, screw rod, 5, splint up and down (upper splint and lower splint shape are identical), 6, Multi-edged pin hole, 7, multi-edged pin hole, 8, cylindrical pin hole, 9, accessory box.

In accompanying drawing 3, 1, alveolar, 2, slotted hole, 3, round hole.

In accompanying drawing 4, 1, pin, 2, return spring, 3, handle, 4, shell thread,

In accompanying drawing 5, 1, safety belt buckle, 2, double-sided pedal, 3, pedal diagonal brace, 4, cylindrical pin, 5, hand-pull automatic reset polygonal pin, 6, strengthen support, 7, screw rod, 8 , round hole, 9, accessory box, 10, polygonal pin hole, 11, cylindrical pin hole, 12, splint, 13, slotted hole, 14, gasket with tooth groove, 15, nut.

In accompanying drawing 6, 1, pedal, 2, base, 3, circuit breaker vase, 4, circuit breaker frame, 5, screw rod, 6, nut, 7, gasket with tooth groove, 8, lower splint.

Detailed ways:

In accompanying drawing 1, on the ladder that insulating material is made, choose a rung (10), rung track (11) is built in both sides of rung, pedal (2) slides in track (11), pedal (2) and The diagonal brace (3) is connected to the step (9) through the rotating shaft (8). Limit stops (12) are provided on both sides of the rotating shaft (8) to keep the pedal (2) in a horizontal state. The pedal (2) can move toward the The other side is overturned; the bottom of the ladder is provided with a connecting reinforced support (6), the upper end of the reinforced support is provided with a rotating shaft (4), the lower end of the ladder is provided with a hand-drawn polygonal pin (5), and the lower end of the base is provided with a cylindrical pin (7). ).

In accompanying drawing 2, four angular pin holes (5) of the fixed ladder are welded symmetrically on the four corners of the plane on the metal plate, and the two sides in the middle of the plane on the metal plate are welded with cylindrical pin holes (6) connected to strengthen the support; The upper splint (4) for fixing the base is welded on the bottom of the upper and lower splints; the long holes of the upper and lower splints and a row of round holes are correspondingly installed, fixed on the frame of the circuit breaker by 4 bolts (4), and the accessory box (7) is used to receive Put bolts and other accessories, and install them in the free position of the metal plate;

In accompanying drawing 3, the upper and lower splints have the same shape, and the long holes (2) and a row of round holes (3) are used to adjust the span of the bolts on both sides, which are suitable for circuit breaker frames of different specifications. Alveolar (1) is engaged with the gasket with alveolar to prevent the screw rod from sliding in the long hole.

In accompanying drawing 4, the polygonal pin of fixed ladder is made of return spring (2), pin (1), handle and shell thread, and pin (1) has multiple edges and corners, and shell thread (4) is screwed into ladder In the screw hole at the bottom, pull the handle to put the pin (1) away, release the handle (3) and return spring (2) to eject the pin (1), insert it into the pin hole to fix the ladder, multi-edged pin ( 1) It can reduce the shaking of the ladder caused by the accumulation of shaft clearance.

In accompanying drawing 5, the cylindrical pin hole (11) of the base is connected with the lower end of the reinforced support (6) with a cylindrical pin, so that both ends of the reinforced support (6) can be rotated; The pin (5) is inserted into the pin holes on both sides of the corresponding base to reduce the shaking caused by the accumulated clearance of the rotating part. The ladder, the reinforced support (6), and the plane of the base form a stable straight Triangular, maintenance personnel stand on the pedal (2) on the extension line of the right angle side when working.

In the accompanying drawing 5, under the condition of keeping the base still, the vertical position of the ladder can be changed in the opposite direction through simple operation, and the maintenance work of the adjacent fracture of the circuit breaker can be carried out;

In the example shown in accompanying drawing 6: the base (2) is placed on the frame (4) between two adjacent fractures of the high-voltage circuit breaker, and the screw rods (5) are respectively inserted into the long holes corresponding to the upper and lower splints (8) and the round hole, make the washer (7) with the tooth groove coincide with the tooth groove on the splint (8), screw on the nut (6) and tighten.

When using, first place the base flat on the circuit breaker frame, select the corresponding long hole and round hole according to the width of the high voltage circuit breaker frame, pad the slotted gasket at the long hole, insert four bolts and tighten, and fix the base firmly ; The ladder is installed on the base through the connection of multi-edge pins and cylindrical pins. During the trial, a person stands on the step, and the safety belt can be hung on the buckle at the top of the ladder.

Claims (6)

1. A new type of ladder for maintenance of high-voltage circuit breakers, which is composed of an insulating ladder and a base. It is characterized in that: the insulating ladder can be installed on the base, and the position can be changed according to needs, and the base can be fixed on circuit breakers of different specifications. On the frame, there are adjustable functions and stabilizing measures. 2. As claimed in claim 1, a new type of ladder for maintenance of high-voltage circuit breakers, characterized in that: on the insulated ladder, there is a pedal (2) that can be turned over on both sides, and a safety belt (rope) is installed on the top. ), the two sides of the lower part of the ladder are provided with movable reinforced supports (6), and the lower end of the ladder is provided with a multi-edge pin (5) which fixes the ladder by hand and automatically resets. 3. As claimed in claim 1: a new type of ladder for maintenance of high-voltage circuit breakers, characterized in that: the base fixed on the structure of the circuit breaker is made of metal plates, and the planes of the metal plates are respectively welded with mounting and The polygonal pin hole for fixing the ladder has a cylindrical pin hole that can be connected to strengthen the support, and the two ends of the lower plane of the metal plate are welded with upper splints. 4. As claimed in claim 1, a new type of ladder used for maintenance of high-voltage circuit breakers, characterized in that: the upper end of the reinforced support (6) is fixed below the middle with a rotating shaft (4), the two ends can rotate with each other, and the lower end The cylindrical pin (7) is connected with the base, the position of the ladder can be adjusted to rotate an angle, and it can be folded during transportation and storage. 5. As claimed in claims 1 and 3, a new type of ladder for maintenance of high-voltage circuit breakers, characterized in that: one end of the upper and lower splints has a long hole, and the periphery of the long hole is made into an alveolar shape. Engage with a spacer with a tooth groove, and drill a row of round holes at the other end. 6. As claimed in claims 1 and 2, a new type of ladder for maintenance of high-voltage circuit breakers, characterized in that: the multi-ribbon pin with automatic reset by hand is composed of a return spring, a shell, a pin, and a handle. The pin has more than three corners.

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