Crank of vacuum circuit breaker

Abstract

The invention relates to a crank of a vacuum circuit breaker. The crank comprises a handle and a meshing head, the handle is a crank operating part; the crank further comprises a rotating drum, the handle is installed on the rotating drum carrier, the handle and the rotating drum are connected through meshing of a bevel gear, and the meshing head is installed at the front end of the rotating drum. The design is reasonable, the structure is simple, the rotating drum is designed, and the bevel gear is assisted to change the operation direction; during operation, 1) an operator directly faces the switch cabinet, the switch state can be observed in real time through the glass window, and an in-place indicating lamp on the cabinet door of the switch cabinet can also be seen, 2) the switch is pushed when the handle is swung towards the cabinet door, the switch is pulled out when the handle is swung towards the handle, the operation action has strong correlation with the actual switch motion, and the operation is easy.

Description

Technical Field

[0001] This invention relates to vacuum circuit breaker switches, and more specifically to a vacuum circuit breaker crank handle. Background Technology

[0002] Switching between hot and cold standby of 6KV switches is a high-frequency electrical operation in power plants. During operation, a vacuum circuit breaker crank is required. The switch is pulled out and pushed forward along the track by hand to open and close the switch.

[0003] Currently, most vacuum circuit breaker cranks used are traditional figure-7 shaped cranks. While these traditional figure-7 cranks are simple in construction and inexpensive, their operation requires the operator to bend over and face the switch cabinet sideways. This means the operator cannot observe the switch's status in real-time through the glass window on the switch cabinet, nor can they observe the position indicator light on the cabinet door. Furthermore, the operator needs to control the horizontal movement of the switch by cranking clockwise or counter-clockwise, and the operational action is weakly correlated with the actual direction of movement. New operators need a long time to learn to crank clockwise to advance and counter-clockwise to pull out. Summary of the Invention

[0004] This invention proposes a hand crank for a vacuum circuit breaker.

[0005] The technical solution of this invention: A vacuum circuit breaker crank handle includes a handle and a gear engagement head. The handle is the crank handle operating part. The crank handle also includes a rotating drum. The handle is mounted on the rotating drum carrier. The handle and the rotating drum are connected by a bevel gear. The gear engagement head is mounted on the front end of the rotating drum.

[0006] To further refine the above technical solution, the rotating drum carrier is a handle; during operation, the handle is held (the handle applies force to the rotating drum) to maintain the stability of the rotating drum.

[0007] To further refine the above technical solution, the handle is on the left and the grip is on the right. During operation, the left hand holds the handle and the right hand holds the grip.

[0008] To further refine the above technical solution, the handle is on the right and the grip is on the left. During operation, the left hand holds the handle and the right hand holds the grip.

[0009] Further refining the above technical solution, the handle is inserted directly into the rotating drum from the end of the drum and connected to the drum via a bearing. (The handle applies force to the rotating drum.) The applied force is perpendicular to the center of rotation of the drum, and there is no large torque.

[0010] To further refine the above technical solution, a circular hole is provided on the side where the handle and the rod meet, and the end of the handle is a cylindrical head. The cylindrical head matches the size of the circular hole, and the cylindrical head is inserted into the circular hole.

[0011] Further refining the above technical solution, the handle is a circular ring, which facilitates handheld operation.

[0012] Further refining the above technical solution, the vacuum circuit breaker has several protrusions on its four sides at the engagement position. The number and position of these protrusions vary depending on the type of vacuum circuit breaker. The engagement head has several grooves on its four sides. There are two types of engagement heads: dedicated engagement heads and universal engagement heads. The grooves on the four sides of the engagement mouth of the dedicated engagement head match the number and position of the protrusions on the four sides of the engagement position of a vacuum circuit breaker. The grooves on the four sides of the engagement mouth of the universal engagement head include the number and position of the protrusions on the four sides of the engagement position of all vacuum circuit breakers. Dedicated engagement heads are used under normal circumstances to ensure dedicated operation and reduce the risk of misoperation. Universal engagement heads can be used in emergency situations.

[0013] The advantages of this invention are that it is reasonably designed and has a simple structure. The design includes a rotating drum and a bevel gear to change the operating direction. During operation, 1) the operator faces the switch cabinet and can observe the switch status in real time through the glass window, and can also see the position indicator light on the cabinet door; 2) shaking the handle towards the cabinet door pushes the switch, and shaking the handle towards the operator pulls the switch out. The operating actions are highly correlated with the actual movement of the switch, making it easy to learn. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the crank handle structure of a vacuum circuit breaker.

[0015] Figure 2 This is a schematic diagram of the crank handle structure of a vacuum circuit breaker (explosion).

[0016] In the diagram, there is a rotating cylinder 1, a handle 2, a round hole 2-1, a handle 3, a cylindrical head 3-1, a gear head 4, a bearing 5, and a bevel gear 6. Detailed Implementation

[0017] like Figure 1-2 As shown: A vacuum circuit breaker crank handle includes a rotating drum 1, a handle 2, a grip 3, and a gear head 4. The handle 2 rod is inserted directly into the rotating drum 1 from the end of the rotating drum 1 and is connected to the rotating drum 1 via a bearing 5. The handle 2 is a ring. A circular hole 2-1 is provided on the side where the handle 2 meets the rod. The end of the grip 3 is a cylindrical head 3-1, which matches the size of the circular hole 2-1 and is inserted into the circular hole 2-1. The handle 2 is on the left and the grip 3 is on the right. The grip 3 and the rotating drum 2 are connected by a bevel gear 6. The gear head 4 is a quick-release gear head. Several grooves 4-1 are provided on the four sides of the gear opening of the gear head 4. The engagement position of a vacuum circuit breaker has several protrusions on its four sides. The number and position of the protrusions on the four sides of the engagement position vary among different vacuum circuit breakers. There are two types of engagement heads: dedicated engagement heads and universal engagement heads. The number and position of the grooves on the four sides of the engagement port of the dedicated engagement head are consistent with the number and position of the protrusions on the four sides of the engagement position of a vacuum circuit breaker. The number and position of the grooves on the four sides of the engagement port of the universal engagement head include the number and position of the protrusions on the four sides of the engagement position of all vacuum circuit breakers.

[0018] The above embodiments are only for illustrating the technical concept and features of the invention, and are intended to enable those skilled in the art to understand the content of the invention and implement it accordingly. They should not be construed as limiting the scope of protection of the invention. All equivalent changes or modifications made in accordance with the spirit and essence of the invention should be covered within the scope of protection of the invention.

Claims

1. A crank handle for a vacuum circuit breaker, the crank handle comprising a handle and a gear head; the handle being the crank operating part; characterized in that, The crank handle also includes a rotating drum. The handle is mounted on the rotating drum carrier. The handle and the rotating drum are connected by a bevel gear. The gear head is mounted on the front end of the rotating drum.

2. The vacuum circuit breaker crank according to claim 1, characterized in that, The rotating drum carrier is a handle.

3. A vacuum circuit breaker crank according to claim 2, characterized in that, The handle is on the left and the grip is on the right.

4. A vacuum circuit breaker crank according to claim 2, characterized in that, The handle is on the right and the grip is on the left.

5. A vacuum circuit breaker crank according to claim 2, characterized in that, The handle is inserted directly into the rotating drum from the end of the rotating drum and is connected to the rotating drum via a bearing.

6. A vacuum circuit breaker crank according to claim 5, characterized in that, A circular hole is provided on the side where the handle and the rod meet. The end of the handle is a cylindrical head, the size of which matches the size of the circular hole, and the cylindrical head is inserted into the circular hole.

7. A vacuum circuit breaker crank according to claim 2, characterized in that, The handle is a ring.

8. A vacuum circuit breaker crank according to claim 1, characterized in that, The engagement head is a quick-release engagement head.

9. A vacuum circuit breaker crank according to claim 8, characterized in that, The vacuum circuit breaker has several protrusions on its four sides at the engagement position. The number and position of the protrusions on the four sides of the engagement position vary among different vacuum circuit breakers. The engagement head has several grooves on its four sides at the engagement opening. There are two types of engagement heads: dedicated engagement heads and universal engagement heads. The grooves on the four sides of the engagement opening of the dedicated engagement head are consistent with the number and position of the protrusions on the four sides of the engagement position of a vacuum circuit breaker. The engagement head is a universal engagement head. The grooves on the four sides of the engagement opening of the universal engagement head contain the number and position of the protrusions on the four sides of the engagement position of all vacuum circuit breakers.

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