CN201390592Y - Special spreader for circuit breaker - Google Patents

Abstract

The utility model discloses a special hoist for a circuit breaker. The hoist includes a connecting frame, and a connecting hole is opened at the two ends of the connecting frame corresponding to the installation hole of the wiring board of the single-pole breaker switch of the circuit breaker. Fasteners for connecting and fixing the single-pole disconnect switch of the circuit breaker are mounted on the thread, and a lifting ring is also fixed at the center of the upper end face of the connecting frame. With the above-mentioned structure, the structure is simple, the assembly is quick, and no special training is required for operators. When hoisting the single-pole circuit breaker of the circuit breaker, the special lifting tool is fixed and installed on the wiring board of the single-pole circuit breaker by fasteners. , and use a sling to pass through the rings and hoist it on the crane. During the movement of the crane, the single-pole circuit breaker is always in a vertical state, and its swing range is very small, which makes the circuit breaker safe and reliable during assembly, testing and final installation. increase in magnitude.

Description

Special spreader for circuit breaker

technical field

The utility model relates to a sling used for connecting a suspended object and a crane, in particular to a special sling used for hoisting a single-pole circuit breaker of a circuit breaker.

Background technique

The high-voltage circuit breaker is mainly composed of three single-pole circuit breakers. Each single-pole circuit breaker is assembled vertically in the workshop. After various performance tests, they are lifted to the product packaging area for packaging and leaving the factory. Even when the products are finally installed at the installation site, each single-pole circuit breaker still needs to be hoisted.

At present, the following methods are generally adopted for the lifting of each single-pole circuit breaker:

a) Use a nylon sling to wrap a few turns on the umbrella skirt of the arc extinguishing chamber of the single-pole short-circuit switch, tie a knot and hang it on the crane hook for hoisting. During the hoisting process of this method, the entire single-pole circuit breaker is in a tilted state. When moving, the entire single-pole circuit breaker swings a lot, and it is easy to bump into the porcelain sleeve of the circuit breaker and damage the circuit breaker. The bundling skills and experience requirements are relatively high. If the bundling is not firm, there will be major safety hazards during the hoisting process.

b) Use a hook to directly hook the two installation holes on the wiring board of the single-pole disconnect switch of the circuit breaker. After the single-pole disconnect switch is hoisted in place, it is easy to decouple when the single-pole disconnect switch is tilted or placed flat, and it is very dangerous. Safety.

Utility model content

The purpose of this utility model is to solve the defects of the above-mentioned hoisting method, and provide a special hoisting tool for circuit breakers, so as to safely and conveniently hoist each single-pole circuit breaker in the hoisting process.

The technical scheme of the utility model is: a special hoist for a circuit breaker, including a connecting frame, and a connecting through hole is opened at the two ends of the connecting frame corresponding to the installation hole of the single-pole circuit breaker wiring board of the circuit breaker. There are also hanging rings attached.

The connecting frame includes two planar plates arranged at intervals, and the two planar plates are fixedly connected by a bridging plate to form a U-shaped groove structure, and the connecting through holes are provided at both ends of the bridging plate.

A notch is dug on the connecting frame corresponding to the cover plate of the single-pole disconnect switch of the circuit breaker on the two plane plates located at the notch of the U-shaped groove.

Reinforcement steel plates are respectively welded at the slots on both sides of the notch of the connecting frame, and through holes are opened on the reinforcement steel plates corresponding to the connection through holes.

Both the connection through hole and the through hole on the reinforced steel plate are long holes along the length direction of the connecting frame.

Bolts for connecting the single-pole disconnect switch of the circuit breaker are installed in the connecting through hole and the through hole.

A limiting plate is also screwed on the bolt, and the limiting plate is arranged in the space formed by the reinforced steel plate and the bridging plate.

The suspension ring is fixed at the center of the upper end surface of the connecting frame.

With the above-mentioned structure, the structure is simple, the assembly is quick, and no special training is required for operators. When hoisting the single-pole circuit breaker of the circuit breaker, the special lifting tool is fixed and installed on the wiring board of the single-pole circuit breaker by fasteners. , and use a sling to pass through the rings and hoist it on the crane. During the movement of the crane, the single-pole circuit breaker is always in a vertical state, and its swing range is very small, so it is not easy to trip. The safety and reliability of hoisting work is greatly improved.

Description of drawings

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

Fig. 2 is the use state figure of the utility model.

Detailed ways

As shown in Figure 1, the connecting frame 1 of the spreader of the present invention is made of channel steel, and the center of the upper end surface of the connecting frame 1 is fixed with a suspension ring 2. In this embodiment, the suspension ring 2 adopts a suspension ring screw, and the suspension ring The screw is installed in the center of the upper end surface of the channel steel and fastened with a nut, and then welded firmly with the channel steel. In order to prevent the spreader from damaging the cover plate on the single-pole disconnect switch of the circuit breaker during installation, a notch 6 is dug at the corresponding cover plate on the two groove walls at the bottom notch of the spreader connecting frame 1 . Reinforced steel plates 5 are respectively welded and fixed on the two groove walls at the two ends of the notch 6 at the bottom of the connecting frame 1, and the upper end surfaces of the two ends of the channel steel and the reinforced steel plates 5 correspond to the through holes on the wiring board of the single-pole disconnect switch of the circuit breaker respectively. A connecting long hole is provided, and a connecting bolt 3 is pierced in the connecting long hole, and a limiting plate 4 is also screwed on the connecting bolt 3 positioned on the inner side of the channel steel connecting frame 1, and the limiting plate 4 can be used for fastening the connecting bolt. 3 o'clock prevents the bolt from rotating and can adjust the thread length of the connecting bolt.

The state of use is shown in Figure 2. When hoisting the single-pole breaker switch of the circuit breaker, the sling 100 is fixed on the wiring board of the single-pole breaker switch 102 of the circuit breaker through the connecting bolt 3, and then the sling 101 is passed through the sling Ring 2 on the 100 links to each other with the suspension hook on the crane.

Claims (8)

1, a kind of circuit breaker special hanger is characterized in that, this suspender comprises link span, offers the connection open-work in the position of these link span two ends corresponding circuit breaker one pole cut-out switch touch block mounting hole, also is fixed with suspension ring on this link span.

2, circuit breaker special hanger according to claim 1 is characterized in that, described link span comprises two surface plates that are provided with at interval, and two surface plates are connected by bridging board and constitute the U-lag structure, and described connection open-work is opened in the bridging board two ends.

3, circuit breaker special hanger according to claim 1 and 2 is characterized in that, dig and is provided with recess at corresponding circuit breaker one pole cut-out switch cover plate place on two surface plates that are positioned at the U-lag notch on the described link span.

4, circuit breaker special hanger according to claim 3 is characterized in that, is welded with strengthening steel slab respectively at the notch place on described link span recess both sides, and corresponding described connection open-work offers through hole on this strengthening steel slab.

5, circuit breaker special hanger according to claim 4 is characterized in that, the through hole on described connection open-work and the strengthening steel slab is along the slotted hole of link span length direction.

6, circuit breaker special hanger according to claim 5 is characterized in that, is coated with the bolt that is used to be connected circuit breaker one pole cut-out switch in described connection open-work and described through hole.

7, circuit breaker special hanger according to claim 6 is characterized in that, also is installed with positioning plate on described bolt, and this positioning plate is arranged in the space of strengthening steel slab and bridging board formation.

8, circuit breaker special hanger according to claim 1 is characterized in that, described suspension ring are installed in the center of link span upper surface.

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