CN203135279U - Special tool for maintenance of compression spring of breaker contact - Google Patents

Abstract

The utility model relates to a special tool for checking and repairing the contact compression spring of a circuit breaker, which comprises an upper cover plate, a bottom plate, and a connecting rod connecting the two. The connecting rods are symmetrically fixed on both sides of the bottom plate plane, and the upper part of the connecting rod is a screw rod. Go through both sides of the upper cover plate and screw with the locking nut, open an upper socket at the center of the upper cover plate, and open a lower card slot on the bottom plate. Due to the implementation of the above-mentioned technical scheme, the utility model can quickly press and stretch the contact compression spring, which is stable when compressed, and prevents the spring from springing out under pressure, which can effectively guarantee the completion of the maintenance work and provide a good protection of.

Description

Circuit breaker contact compression spring maintenance special tools

technical field

The utility model relates to a special tool for checking and repairing a contact compression spring of a circuit breaker.

Background technique

The contact compression spring of the ZN28N-12 circuit breaker is fixed with a pin, and it is inevitable to loosen after a long period of operation, or the contact compression spring needs to be checked when the circuit breaker is overhauled. After the overhaul is completed, the contact compression spring should be installed as a whole, because it needs to be compressed to a certain degree during installation before installation. However, the pressure of the contact compression spring is relatively large, and a large force is required for manual compression, which makes it difficult to install it in place.

Contents of the invention

The purpose of the utility model is to provide a special tool for checking and repairing the contact compression spring of the ZN28N-12 circuit breaker conveniently and quickly.

The purpose of this utility model is achieved in this way: the special tool for overhauling the contact compression spring of the circuit breaker includes an upper cover plate, a bottom plate, and a connecting rod connecting the two. The connecting rods are symmetrically fixed on both sides of the bottom plate plane, and the upper part of the connecting rod is a screw rod. , which passes through both sides of the upper cover and is screwed with the locking nut, an upper socket is opened at the center of the upper cover, and a lower slot is opened on the bottom plate. the

Due to the implementation of the above-mentioned technical scheme, the utility model can quickly press and stretch the contact compression spring, which is stable when compressed, and prevents the spring from springing out under pressure, which can effectively ensure the completion of the maintenance operation and provide good maintenance services for the maintenance personnel. protection of.

Description of drawings: the technical scheme of the utility model is provided by the following drawings and examples:

Figure 1 is a schematic diagram of the structure of a special tool for circuit breaker contact compression spring maintenance.

Legend: 1. Lock nut; 2. Screw rod; 3. Upper cover plate, 4. Upper socket, 5. Bottom plate, 6. Lower card slot, 7. Connecting rod.

Detailed ways:

The utility model is not limited by the following examples, and the specific implementation manner can be determined according to the technical scheme of the utility model and actual conditions.

Embodiment: As shown in Figure 1, the special tool for overhauling the circuit breaker contact compression spring includes an upper cover plate 3, a bottom plate 5, and a connecting rod 7 connecting them. The upper part of the rod 7 is a screw rod 2, which passes through both sides of the upper cover plate 2 and is screwed with the locking nut 1. An upper insertion hole 4 is provided at the center of the upper cover plate 3, and the upper insertion hole 4 includes a circular through hole, and rectangular holes are connected symmetrically on both sides of the circular through hole. Offer lower draw-in groove 6 on base plate 5, lower draw-in groove 6 is U-shaped groove, and its notch is positioned at base plate 5 circumferences.

When in use, loosen the lock nut 1, separate the upper cover plate 3 from the connecting rod 7, place the upper cover plate 3 at the position where the contact compression spring is to be installed, and then place the contact compression spring between the bottom plate 5 and the connecting rod 7 , and then connect the connecting rod 7 with the upper cover 3, and gradually shorten the distance between the upper cover 3 and the lower bottom 5 through the lock nut 1, so as to realize the compression of the contact compression spring, after being compressed to a certain extent, that is The spring can be installed in place. At this time, the lock nut 1 is loosened, the upper cover plate 3 is separated from the connecting rod 7, and the device can be removed.

The above technical features constitute the best embodiment of the utility model, which has strong adaptability and best implementation effect, and non-essential technical features can be increased or decreased according to actual needs to meet the needs of different situations. the

Claims (3)

1. A special tool for overhauling the contact compression spring of a circuit breaker, characterized in that it includes an upper cover plate, a base plate, and a connecting rod connecting the two, the connecting rods are symmetrically fixed on both sides of the base plate plane, and the upper part of the connecting rod is a screw rod , which passes through both sides of the upper cover and is screwed with the locking nut, an upper socket is opened at the center of the upper cover, and a lower slot is opened on the bottom plate. 2. The special tool for overhauling the circuit breaker contact compression spring according to claim 1, wherein the upper insertion hole includes a circular through hole, and rectangular holes are connected symmetrically on both sides of the circular through hole. 3. The special tool for overhauling the circuit breaker contact compression spring according to claim 1, wherein the lower clamping groove is a U-shaped groove, and its notch is located on the circumference of the bottom plate.

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