Body locking device for high-voltage circuit breaker

Abstract

The utility model relates to a body locking device for a high-voltage circuit breaker, which comprises a U-shaped plate, threaded rods are arranged on the outer wall of a side plate of the U-shaped plate, the threaded rods penetrate through the side plate of the U-shaped plate and extend into the U-shaped plate, and a transmission case side wall fixing space is formed by the transverse distance between the two threaded rods. The outer wall of one side plate of the U-shaped plate is fixedly connected with a connecting plate, and the connecting plate is provided with a connecting mechanism which is detachably and fixedly connected with an outer crank arm on the movable side of the arc extinguish chamber. The locking device has the beneficial effects that the outer crank arm on the movable side of the arc extinguish chamber can be locked, the circuit breaker body can still be kept in a closed state after the circuit breaker operating mechanism is separated from the circuit breaker body, and the circuit breaker operating mechanism can be maintained and replaced under the condition that a power grid is not powered off.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy sources, and in particular to a body locking device for a high-voltage circuit breaker. Background Art

[0002] A high-voltage circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and closing, carrying, and interrupting current under abnormal circuit conditions within a specified timeframe. It is primarily used to distribute electrical energy, infrequently start asynchronous motors, and protect power lines and motors.

[0003] During the operation of a high-voltage circuit breaker, the circuit breaker operating mechanism plays a crucial role and is also a frequent point of failure. With existing technology, if personnel need to repair or replace the circuit breaker operating mechanism, a power outage is required, which undoubtedly results in additional manpower and material resources. Utility Model Content

[0004] The utility model addresses the deficiencies of the prior art and provides a body locking device for a high-voltage circuit breaker, which is capable of locking the outer crank arm on the moving side of the arc extinguishing chamber, ensuring that the circuit breaker body can remain in a closed state after the circuit breaker operating mechanism is separated from the circuit breaker body, and enables the circuit breaker operating mechanism to be repaired and replaced without interrupting the power supply to the power grid.

[0005] The utility model is realized by the following technical solution, which provides a body locking device for a high-voltage circuit breaker, comprising a U-shaped plate, wherein a threaded rod is provided on the outer wall of the side plate of the U-shaped plate, the threaded rod passes through the side plate of the U-shaped plate and extends into the U-shaped plate, and the lateral distance between the two threaded rods forms a fixed space on the side wall of the transmission box, and a connecting plate is fixedly connected to the outer wall of one side plate of the U-shaped plate, and the connecting plate is provided with a connecting mechanism that can be fixedly installed with the outer crank arm on the moving side of the arc extinguishing chamber.

[0006] The U-shaped plate is fixed to the side panel of the utility model, and a threaded rod is provided on the outer wall of the side panel of the U-shaped plate, and the threaded rod passes through the side panel of the U-shaped plate and extends into the inside of the U-shaped plate. The horizontal distance between the two threaded rods forms a fixed space for the side wall of the transmission box, and a connecting plate is fixedly connected to the outer wall of one side panel of the U-shaped plate. The connecting plate is provided with a connecting mechanism that can be fixedly installed with the outer crank arm of the moving side of the arc extinguishing chamber. When the device is in use, the moving device makes the side wall of the transmission box enter the fixed space of the side wall of the transmission box formed by the horizontal distance between the two threaded rods, and then the threaded rod is moved on the U-shaped plate by rotating the threaded rod. The U-shaped plate and the arc extinguishing chamber moving side outer bend arm are fixed together through the connecting plate and the connecting mechanism, thereby locking the arc extinguishing chamber moving side outer bend arm, and then the circuit breaker operating mechanism is removed from its installation position, so that the arc extinguishing chamber moving side outer bend arm can be locked, ensuring that after the circuit breaker operating mechanism is separated from the circuit breaker body, the circuit breaker body can still maintain the closed state, so that the circuit breaker operating mechanism can be repaired and replaced without interrupting the power grid.

[0007] Preferably, the connecting plate is located on the side of the threaded rod away from the bottom plate of the U-shaped plate. By locating the connecting plate on the side of the threaded rod away from the bottom plate of the U-shaped plate, the staff can install the connecting mechanism on the connecting plate on the outer arm of the moving side of the arc extinguishing chamber for fixation.

[0008] Preferably, a plurality of threaded rods are provided on the outer wall of the side plate of the U-shaped plate, and the plurality of threaded rods are distributed in the front-to-back direction. By providing a plurality of threaded rods on the outer wall of the side plate of the U-shaped plate, and the plurality of threaded rods are distributed in the front-to-back direction, the stability between the U-shaped plate and the side wall of the transmission case can be improved when the device is in use.

[0009] Preferably, a stiffening plate is provided on the side wall of the connecting plate facing the bottom plate of the U-shaped plate, the stiffening plate being fixedly connected to the outer wall of one side of the U-shaped plate. By providing the stiffening plate on the side wall of the connecting plate facing the bottom plate of the U-shaped plate, the stiffening plate can improve the stability between the U-shaped plate and the connecting plate during use.

[0010] Preferably, the connecting mechanism includes a connecting hole provided on the side wall of the connecting plate away from the bottom plate of the U-shaped plate, a pin is provided in the connecting hole, and the connecting plate and the outer arm of the moving side of the arc extinguishing chamber are fixed by the pin passing through the outer arm of the moving side of the arc extinguishing chamber. The connecting mechanism includes a connecting hole provided on the side wall of the connecting plate away from the bottom plate of the U-shaped plate, a pin is provided in the connecting hole, and the connecting plate and the outer arm of the moving side of the arc extinguishing chamber are fixed by the pin passing through the outer arm of the moving side of the arc extinguishing chamber. By controlling the movement of the pin in the connecting hole, it is convenient for the staff to fix or separate the connecting plate and the outer arm of the moving side of the arc extinguishing chamber.

[0011] The beneficial effects of the present invention are as follows: by providing a U-shaped plate, a threaded rod is provided on the outer wall of the side plate of the U-shaped plate, and the threaded rod passes through the side plate of the U-shaped plate and extends into the inside of the U-shaped plate, and the lateral distance between the two threaded rods forms a fixed space for the side wall of the transmission box, and a connecting plate is fixedly connected to the outer wall of one side plate of the U-shaped plate, and a connecting mechanism is provided on the connecting plate that can be fixedly installed with the outer crank arm of the moving side of the arc extinguishing chamber. When the device is in use, the moving device makes the side wall of the transmission box enter the fixed space of the side wall of the transmission box formed by the lateral distance between the two threaded rods, and then the threaded rod is moved on the U-shaped plate by rotating the threaded rod. The U-shaped plate and the arc extinguishing chamber moving side outer bend arm are fixed together through the connecting plate and the connecting mechanism, thereby locking the arc extinguishing chamber moving side outer bend arm, and then the circuit breaker operating mechanism is removed from its installation position, so that the arc extinguishing chamber moving side outer bend arm can be locked, ensuring that after the circuit breaker operating mechanism is separated from the circuit breaker body, the circuit breaker body can still maintain the closed state, so that the circuit breaker operating mechanism can be repaired and replaced without interrupting the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a state diagram for the use of the utility model;

[0014] Figure 3 for Figure 2 Schematic diagram of the structure of part A;

[0015] As shown in the figure:

[0016] 1. Threaded rod, 2. U-shaped plate, 3. Connecting plate, 4. Reinforced plate, 5. Transmission box side wall, 6. External arm on the moving side of the arc extinguishing chamber, 7. Pin shaft, 8. Output pull rod of the circuit breaker operating mechanism, 9. Connecting hole. DETAILED DESCRIPTION

[0017] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0018] like Figure 1-Figure 3 The main body locking device for a high-voltage circuit breaker of the present invention shown in the figure includes a U-shaped plate 2, and a threaded rod 1 is provided on the outer wall of the side plate of the U-shaped plate 2. The threaded rod 1 passes through the side plate of the U-shaped plate 2 and extends into the U-shaped plate 2. The lateral distance between the two threaded rods 1 forms a fixed space on the side wall of the transmission box. A connecting plate 3 is fixedly connected to the outer wall of one side plate of the U-shaped plate 2, and a connecting mechanism is provided on the connecting plate 3 that can be fixedly installed with the outer bend arm 6 on the moving side of the arc extinguishing chamber.

[0019] By positioning the connecting plate 3 on the side of the threaded rod 1 away from the bottom plate of the U-shaped plate 2, workers can install the connecting mechanism on the connecting plate 3 on the outer arm 6 of the moving side of the arc extinguishing chamber and secure it. By providing a plurality of threaded rods 1 on the outer wall of the side plate of the U-shaped plate 2, distributed along the front-to-back direction, the stability between the U-shaped plate 2 and the side wall of the transmission case 5 can be improved during use. By providing a stiffening plate 4 on the side wall of the connecting plate 3 facing the bottom plate of the U-shaped plate 2, which is fixed to the outer wall of one side plate of the U-shaped plate 2, the stiffening plate 4 can improve the stability between the U-shaped plate 2 and the connecting plate 3 during use. The connecting mechanism includes a connecting hole 9 on the side wall of the connecting plate 3 away from the bottom plate of the U-shaped plate 2, with a pin 7 disposed within the connecting hole 9. The connecting plate 3 and the outer arm 6 of the moving side of the arc extinguishing chamber are secured by the pin 7 that passes through the arm 6. By controlling the movement of the pin 7 within the connecting hole 9, workers can easily secure or detach the connecting plate 3 from the outer arm 6 of the moving side of the arc extinguishing chamber. The arc extinguishing chamber's movable-side outer crank arm 6 rotates coaxially with a similarly structured inner crank arm within the transmission case 5 via a rotating shaft. The inner crank arm directly drives the arc extinguishing chamber's movable side. The pin can withstand the electric force generated during the circuit breaker's normal current flow. The arc extinguishing chamber's movable-side outer crank arm 6 is provided with a fixing hole compatible with the pin 7. This fixing hole facilitates the pin 7, which is inserted into the connecting hole 9 and secured through the arc extinguishing chamber's movable-side outer crank arm 6.

[0020] Combined with attachment Figure 1-3 It can be seen that the method of using the present invention is as follows: first, the device is moved to allow the side wall of the transmission box 5 to enter the fixed space of the transmission box side wall formed by the lateral distance between the two threaded rods 1, and then the threaded rod 1 is rotated to move the threaded rod 1 on the U-shaped plate 2, so that the threaded rod 1 is pressed against the side wall of the transmission box 5 and fixed to the transmission box 5, and then the pin shaft 7 in the connecting hole 9 is controlled to move so that the pin shaft 7 passes through the outer turning arm 6 of the moving side of the arc extinguishing chamber, thereby fixing the connecting plate 3 and the outer turning arm 6 of the moving side of the arc extinguishing chamber together, thereby fixing the outer turning arm 6 of the moving side of the arc extinguishing chamber Lock it, and then take the circuit breaker operating mechanism out of its installation position. This ensures that after the circuit breaker operating mechanism is separated from the circuit breaker body, the circuit breaker body can still remain in the closed state, so that the circuit breaker operating mechanism can be repaired and replaced without interrupting the power supply to the power grid. When the circuit breaker operating mechanism is repaired and replaced, put it back to the installation position, and then control the pin shaft 7 in the connecting hole 9 to move so that the pin shaft 7 is separated from the outer bend arm 6 on the moving side of the arc extinguishing chamber, and the connecting plate 3 and the outer bend arm 6 on the moving side of the arc extinguishing chamber are no longer fixed together, and the outer bend arm 6 on the moving side of the arc extinguishing chamber is no longer locked.

[0021] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A body locking device for a high-voltage circuit breaker, characterized in that: The invention comprises a U-shaped plate (2), wherein a threaded rod (1) is provided on the outer wall of the side plate of the U-shaped plate (2), and the threaded rod (1) passes through the side plate of the U-shaped plate (2) and extends into the U-shaped plate (2), and the lateral distance between the two threaded rods (1) forms a fixed space on the side wall of the transmission box, and a connecting plate (3) is fixedly connected to the outer wall of one side plate of the U-shaped plate (2), and the connecting plate (3) is provided with a connecting mechanism that can be fixedly installed with the outer crank arm (6) on the moving side of the arc extinguishing chamber.

2. The high-voltage circuit breaker body locking device according to claim 1, characterized in that: The connecting plate (3) is located on the side of the threaded rod (1) away from the bottom plate of the U-shaped plate (2).

3. The high-voltage circuit breaker body locking device according to claim 1, characterized in that: A plurality of the threaded rods (1) are provided on the outer wall of the side plate of the U-shaped plate (2), and the plurality of the threaded rods (1) are distributed along the front-to-back direction.

4. The high-voltage circuit breaker body locking device according to claim 1, characterized in that: A stiffening plate (4) fixedly connected to the outer wall of one side plate of the U-shaped plate (2) is provided on the side wall of the connecting plate (3) facing the bottom plate of the U-shaped plate (2).

5. The high-voltage circuit breaker body locking device according to claim 4, characterized in that: The connecting mechanism comprises a connecting hole (9) provided on a side wall of the connecting plate (3) away from the bottom plate of the U-shaped plate (2); a pin (7) is provided in the connecting hole (9); the connecting plate (3) and the arc extinguishing chamber movable side outer bend arm (6) are detachably fixedly connected via the pin (7) passing through the arc extinguishing chamber movable side outer bend arm (6).

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