CN203312089U - Tool used for dismounting energy-storage spring of circuit breaker - Google Patents

Abstract

The utility model discloses a tool used for dismounting an energy-storage spring of a circuit breaker. The tool includes a support frame and a pinch bar. The support frame is provided with a horizontal support shaft. The pinch bar is provided with a shaft sleeve which is used for enabling the pinch bar to rotate around the support shaft. One end of the pinch rod is provided with a clamping piece used for being inserted into a gap between two adjacent coils of spring wires of the energy-storage spring. The other end of the pinch rod is an operating handle. The tool used for dismounting the energy-storage spring of the circuit breaker is simple in manufacture and convenient to carry. In use, the clamping piece can be inserted into the energy-saving spring to prevent slipping so that the tool has the advantages of being safe and convenient.

Description

Tool for removing the energy storage spring of the circuit breaker

technical field

The utility model relates to a tool for dismantling an energy storage spring of a circuit breaker.

Background technique

The circuit breaker is a commonly used device in the power system. The circuit breaker used by the power supply unit is equipped with a large energy storage spring. The energy storage spring is generally a cylindrical coil spring. When overhauling other components on the circuit breaker or replacing the energy storage spring, the energy storage spring needs to be disassembled. In the prior art, the energy storage spring is dismantled by means of screwdriver prying and iron wire pulling, but because the energy storage spring is generally relatively large in size and rigidity, the above method is dangerous, heavy in workload, and takes a long time Defects.

Utility model content

In view of the above-mentioned defects in the prior art, the problem to be solved by the utility model is to provide a safe and convenient tool for disassembling the energy storage spring of the circuit breaker.

In order to solve the above problems, the utility model provides a tool for disassembling the energy storage spring of a circuit breaker, which includes a support frame and a pry bar, the support frame is provided with a horizontal support shaft, and the pry bar is provided with a The crowbar rotates around the shaft sleeve of the support shaft, and one end of the crowbar is provided with a clamping piece for inserting into the gap between two adjacent coils of the spring wire of the energy storage spring, and the crowbar The other end is the operating handle.

Preferably, the front end of the holding piece is provided with an arc-shaped first notch.

Preferably, when the pry bar is in the horizontal position, the clamping piece is inclined relative to the horizontal plane, so as to match the gap between the spring wires of two adjacent coils of the energy storage spring that is inclined relative to the horizontal plane .

Preferably, the sleeve is C-shaped.

Preferably, the bushing is an elastic component.

Preferably, the support frame includes two vertically opposite support plates and at least two connecting plates arranged horizontally for connecting the two support plates, and the two ends of the support shaft are connected to the support plates respectively. Fixed connection.

Preferably, the support shaft is located above the uppermost connecting plate.

Preferably, a second notch is provided on a side of the connecting plate facing the energy storage spring.

Preferably, the second notch is arc-shaped.

Preferably, the length of the operating handle is greater than the length from the shaft sleeve to the holding piece.

The tool for disassembling the energy storage spring of the circuit breaker of the utility model has the following beneficial effects:

1. The tool for disassembling the energy storage spring of the circuit breaker of the present utility model is simple to make and easy to carry.

2. When in use, the holding piece can be inserted into the energy storage spring to avoid slipping, which has the advantages of safety and convenience.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of a tool for disassembling a circuit breaker energy storage spring according to an embodiment of the present invention.

Fig. 2 is a view of the use state of the tool shown in Fig. 1 for disassembling the energy storage spring of the circuit breaker.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

As shown in Figures 1 and 2, the tool for disassembling the energy storage spring of a circuit breaker according to an embodiment of the present invention includes a support frame 1 and a pry bar 2. The support frame 1 is provided with a horizontal support shaft 11, and the pry bar The lever 2 is provided with a bushing 21 for the crowbar 2 to rotate around the support shaft 11, and one end of the crowbar 2 is provided with a space between two adjacent turns of the spring wire for inserting the energy storage spring 7 (as shown in Fig. 2 ). The clamping piece 3 of the slit, and the other end of the pry bar 2 is an operating handle 201 . As shown in Figure 2, when disassembling the energy storage spring 7 of the circuit breaker (not shown in the figure), first unscrew the fixing screw above the energy storage spring 7, place the support frame 1 facing the energy storage spring 7, and place the card The holding piece 3 is inserted into the gap between two adjacent coils of the spring wire of the energy storage spring 7, and the end of the operating handle 201 is pulled by hand, so that the holding piece 3 can be used to pry the energy storage spring 7 until the upper end of the holding piece 3 moves from the Disconnect the connection from the circuit breaker. Since the holding piece 3 is inserted into the energy storage spring 7, it is not easy to cause danger due to slipping, and the operator is far away from the energy storage spring 7 and the circuit breaker, which increases safety. In addition, due to the leverage effect of the crowbar 2, the purpose of labor saving can be achieved.

As shown in Figure 1, in order to be compatible with the cylindrical energy storage spring 7, the front end of the clamping piece 3 is provided with a circular arc-shaped first gap 31, thus ensuring that the clamping piece 3 acts on the energy storage spring 7 The force distribution on the spring wire is even.

As a preference, in this embodiment, as shown in FIG. 1 , after the crowbar 2 is installed on the support shaft 11, when the crowbar 2 is in a horizontal position, the clamping piece 3 is arranged obliquely relative to the horizontal plane so as to align with the energy storage spring 7 The gap between the adjacent two turns of the spring wire is suitable for the inclined gap relative to the horizontal plane. Because the energy storage spring 7 is helical, the spring wire has a certain angle with the horizontal plane. When the size of the holding piece 3 is small, it is easy to insert in the energy storage spring 7. In order to facilitate the insertion of the large holding piece 3 into the storage The gap between two adjacent coils of spring wire in the energy spring 7 forms a certain angle of inclination relative to the horizontal plane, and the clamping piece 3 is arranged at a certain angle of inclination relative to the horizontal plane.

The shaft sleeve 21 can be a hollow cylinder, fixedly sleeved on the support shaft 11, so that the pry bar 2 and the support frame 1 are integrated. For easy portability, the shaft sleeve 21 can be set in a C-shape to facilitate the separation or combination of the pry bar 2 and the support shaft 11 . Further preferably, the shaft sleeve 21 is made of elastic components, such as elastic steel or engineering plastics with a certain strength, etc., the shaft sleeve 21 and the pry bar 2 can be connected by pins or threads; the shaft sleeve 21 If it is the same material as the pry bar 2, it can also be connected by welding.

As shown in Figure 1, in the present embodiment, the support frame 1 includes two support plates 12 vertically opposite to each other and two connecting plates 13 horizontally arranged for connecting the two support plates 12, and the two ends of the support shaft 11 They are respectively fixedly connected with the support plate 12. The connecting plate 13 can maintain a stable positional relationship between the two supporting plates 12 and form a stable shape to support the pry bar 2 . The number of connecting plates 13 is not limited, and is set according to actual conditions. The position between the connecting plate 13 and the supporting shaft 11 is also not limited, just for the convenience of operation and assembly of the pry bar 2 , as shown in FIG. 1 , the supporting shaft 11 is located above the uppermost connecting plate 13 . Thereby, the pry bar 2 is located at the top, and when the pry bar 2 is turned, it will not interfere with other parts, and its operating space is more guaranteed.

In order to save space and fit better with the energy storage spring 7, in this embodiment, as a preference, as shown in Figure 2, the connecting plate 13 is provided with an arc-shaped second notch 132 on the side facing the energy storage spring 7 , the second notch 132 is preferably arc-shaped, so as to fit with the cylindrical energy storage spring 7 .

In order to reduce the difficulty of operation, the length of the operating handle 201 is greater than the length from the shaft sleeve 21 to the clamping piece 3 , through the leverage effect, the beneficial effect of saving labor and working time is achieved.

Certainly, what is described above is the preferred embodiment of the present utility model, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principle of the present utility model. And retouching are also regarded as the scope of protection of the present utility model.

Claims (10)

1. A tool for disassembling the energy storage spring of a circuit breaker, characterized in that it comprises a support frame and a crowbar, the support frame is provided with a horizontal support shaft, and the crowbar is provided with a support for the crowbar A shaft sleeve that rotates around the support shaft, one end of the crowbar is provided with a holding piece for inserting into the gap between two adjacent coils of the spring wire of the energy storage spring, and the other end of the crowbar is for operating handle. 2 . The tool for disassembling the energy storage spring of a circuit breaker according to claim 1 , wherein a circular arc-shaped first notch is provided at the front end of the holding piece. 3 . 3. The tool for removing the energy storage spring of a circuit breaker according to claim 1 or 2, wherein when the crowbar is in the horizontal position, the holding piece is inclined relative to the horizontal plane so as to be in line with the The gap between the spring wires of two adjacent turns of the energy storage spring is adapted to the horizontal plane. 4. The tool for disassembling the energy storage spring of a circuit breaker according to claim 1 or 2, wherein the bushing is C-shaped. 5. The tool for disassembling the energy storage spring of a circuit breaker according to claim 4, wherein the bushing is an elastic component. 6. The tool for disassembling the energy storage spring of a circuit breaker as claimed in claim 1, wherein the support frame includes two support plates arranged vertically and a horizontally arranged support plate for connecting the two supports. At least two connecting plates of the plates, the two ends of the supporting shaft are respectively fixedly connected to the supporting plates. 7. The tool for disassembling the energy storage spring of a circuit breaker according to claim 6, wherein the support shaft is located above the uppermost connecting plate. 8. The tool for disassembling the energy storage spring of a circuit breaker according to claim 6 or 7, wherein a second notch is provided on the side of the connecting plate facing the energy storage spring. 9. The tool for disassembling the energy storage spring of a circuit breaker according to claim 8, wherein the second notch is arc-shaped. 10. The tool for disassembling the energy storage spring of a circuit breaker according to claim 1 or 2, wherein the length of the operating handle is greater than the length from the sleeve to the holding piece.

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