High-voltage vacuum load switch
By using structures such as brackets, rotation shafts, cams and sleeves in high-voltage vacuum load switches, a long force arm and meshing limit mode is formed, which solves the problems of small external pumping distance during rotation and short traction arm during rotation in the prior art, and realizes the problem of low traction arm when rotating, More efficient isolation knife switch disconnection and limit operation.
Patent Information
- Application Number
- CN202420903796.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-28
AI Technical Summary
When the existing high-voltage load switch is rotated, the external pulling distance is small and the traction arm is short, so the isolation knife switch cannot be completely disconnected, which is inconvenient to use.
A high-voltage vacuum load switch is designed, adopting structures such as bracket, rotation shaft, cam, traction shaft, support frame, support rod and sleeve. A longer force arm is formed through the cam and rotation shaft, and the support rod can be raised to a higher level. The distance, combined with the meshing limit mode between the sleeve and the outer toothed cylinder, achieves stable rotation and limit of the rotation shaft.
It improves the convenience and accuracy of the disconnection of the isolation knife switch, simplifies limit operation, and avoids the problem of too short movement spacing of the support rod.
Smart Images
Figure CN222190569U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-voltage switches, in particular to a high-voltage vacuum load switch. Background Art
[0002] A high-voltage load switch is an electrical appliance whose function is between that of a high-voltage circuit breaker and a high-voltage isolating switch. A high-voltage load switch is often used in series with a high-voltage fuse to control a power transformer. The high-voltage load switch has a simple arc extinguishing device.
[0003] According to the application number "CN206947245U", when the current is disconnected, the current is disconnected in the arc extinguishing chamber, the switch main shaft is pulled out to separate the gear from the shaft and the hole, the handle is turned, and the mounting rod is lifted through the support rod to disconnect the isolating knife switch. After the isolating knife switch is lifted to a certain angle, the switch main shaft can be pushed inward to make the gear match the shaft hole, which plays a role in fixing the angle and is convenient for the staff to operate, thereby solving the problem that the fuse is heavy and the staff is more laborious when turning the isolating switch main shaft.
[0004] In the process of implementing the solution, the inventor discovered that the following problems existed in the prior art and have not been well solved: the switch main shaft is connected to the circular hole of the mounting bracket and the support rod through the mounting bracket, but because it needs to be pulled outward when the main shaft is rotated to disengage the gear and the shaft hole from the limit position, this outward pulling process will cause the edge of the mounting bracket to be blocked by the circular hole of the support rod, resulting in a shorter pull-out distance; and when rotating, because the mounting bracket is small, the traction arm formed between it and the main shaft is short, which leads to a smaller amplitude of the support rod pushing up, and the isolation knife switch cannot be completely disconnected by pushing up, resulting in inconvenience in use. Utility Model Content
[0005] The main purpose of the utility model is to provide a high-voltage vacuum load switch, which can effectively solve the problems in the background technology.
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0007] A high-voltage vacuum load switch comprises a bracket, a rotating shaft is inserted through the bracket, a cam is fixed through the outer wall of the rotating shaft at one end inside the bracket, a traction shaft is provided at the end of the cam away from the rotating shaft, a support frame is provided outside the cam located at the traction shaft, the two ends of the bottom of the support frame are respectively rotatably connected to the two ends of the traction shaft, a support rod is fixed on the top of the support frame, a connecting ring is provided on the top of the support rod, an outer gear cylinder 1 is sleeved and fixed on the outer wall of the rotating shaft at one end outside the bracket, an outer gear cylinder 2 is fixed on the outer wall of the bracket, a sleeve is provided between the outer gear cylinders 1 and 2, and the inner wall of the sleeve is cut with inner tooth grooves.
[0008] Preferably, the position of the second outer gear cylinder matches the position of the first outer gear cylinder, the outer diameter of the second outer gear cylinder matches the outer diameter of the first outer gear cylinder, and the rotating shaft is connected to the second outer gear cylinder.
[0009] Preferably, the inner diameter of the second outer gear cylinder is larger than the outer diameter of the rotating shaft, the length of the second outer gear cylinder matches the length of the sleeve, and the length of the second outer gear cylinder is twice the length of the first outer gear cylinder.
[0010] Preferably, the sleeves are respectively sleeved on the outer walls of the outer gear cylinder 1 and the outer gear cylinder 2, and the sleeves are respectively meshed and connected with the outer walls of the outer gear cylinder 1 and the outer gear cylinder 2 through internal tooth grooves.
[0011] Preferably, the rotating shaft passes through the outer wall of one end of the outer gear cylinder and is provided with a handle.
[0012] Preferably, the rotating shaft is rotatably connected to one end of the bracket passing through via a bearing, and the inner side wall of the bracket away from the end of the outer gear cylinder is rotatably connected to the end of the rotating shaft located inside the bracket via a bearing.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] 1. The force arm formed between the cam and the rotating shaft is relatively long. When the rotating shaft rotates, one end of the cam can pull the support frame up through the traction shaft, so that the support rod can rise to a higher distance, and then the isolation knife switch can be opened, which brings convenience and accuracy to use.
[0015] 2. The sleeve meshes with the outer walls of the outer gear cylinder one and the outer gear cylinder two through the inner tooth grooves on the inner wall. When the rotating shaft needs to be rotated, the sleeve is completely pushed onto the outer wall of the outer gear cylinder two, so that the sleeve cannot mesh with the outer gear cylinder one, and the rotating shaft can be rotated directly. When the rotating shaft needs to be limited, the sleeve moves to the position of the outer gear cylinder one, so that the two ends of the inner tooth grooves on the inner wall of the sleeve mesh with the outer walls of the outer gear cylinder one and the outer gear cylinder two, thereby achieving the limiting effect of the rotating shaft. This method does not require pushing and pulling the rotating shaft. The limiting method is simple and convenient. There is no need to worry about the cam being unable to move due to the support rod or the moving distance being too short. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a structural schematic diagram of a high-voltage vacuum load switch of the utility model when the support rod is not lifted up;
[0017] Figure 2 This is a schematic diagram of the structure of a high-voltage vacuum load switch after the support rod is lifted up;
[0018] Figure 3 This is a schematic diagram of the separation structure of the outer gear cylinder 1 and the outer gear cylinder 2 of a high-voltage vacuum load switch of the utility model from the sleeve;
[0019] Figure 4 The utility model is a schematic diagram of the separation structure of the traction shaft and the support frame of a high-voltage vacuum load switch.
[0020] In the figure: 1. bracket; 2. rotating shaft; 3. cam; 4. traction shaft; 5. support frame; 6. support rod; 7. connecting ring; 8. outer gear cylinder 1; 9. outer gear cylinder 2; 10. sleeve; 11. inner gear groove; 12. handle. DETAILED DESCRIPTION
[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0022] like Figure 1-4 As shown, a high-voltage vacuum load switch comprises a bracket 1, a rotating shaft 2 is inserted through the bracket 1, a cam 3 is fixed through the outer wall of the rotating shaft 2 at one end inside the bracket 1, a traction shaft 4 is arranged at the end of the cam 3 away from the rotating shaft 2, a support frame 5 is arranged outside the cam 3 located at the traction shaft 4, the two ends of the bottom of the support frame 5 are rotatably connected to the two ends of the traction shaft 4 respectively, a support rod 6 is fixed on the top of the support frame 5, a connecting ring 7 is arranged on the top of the support rod 6, an outer gear cylinder 1 8 is sleeved and fixed on the outer wall of the rotating shaft 2 at one end outside the bracket 1, an outer gear cylinder 2 9 is fixed on the outer wall of the bracket 1, a sleeve 10 is arranged between the outer gear cylinder 1 8 and the outer gear cylinder 2 9, and an inner tooth groove 11 is cut on the inner wall of the sleeve 10.
[0023] Specifically, the position of the outer gear cylinder 29 matches the position of the outer gear cylinder 18, the outer diameter size of the outer gear cylinder 29 matches the outer diameter size of the outer gear cylinder 18 respectively, and the rotating shaft 2 is connected with the outer gear cylinder 29, the inner diameter size of the outer gear cylinder 29 is larger than the outer diameter size of the rotating shaft 2, the length of the outer gear cylinder 29 matches the length of the sleeve 10, and the length of the outer gear cylinder 29 is twice the length of the outer gear cylinder 18, so that the sleeve 10 can be pushed onto the outer wall of the outer gear cylinder 29 and disengage from the limit of the outer gear cylinder 18, so as to facilitate the rotation of the rotating shaft 2.
[0024] Specifically, the sleeve 10 is respectively sleeved on the outer walls of the outer gear cylinder 1 8 and the outer gear cylinder 2 9, and the sleeve 10 is respectively meshed and connected with the outer walls of the outer gear cylinder 1 8 and the outer gear cylinder 2 9 through the inner tooth groove 11, so that the sleeve 10 is used to limit the adjusted rotating shaft 2.
[0025] Specifically, the outer wall of the rotating shaft 2 passing through one end of the outer gear cylinder 8 is provided with a handle 12 to facilitate the rotation of the rotating shaft 2.
[0026] Specifically, the rotating shaft 2 is rotatably connected to one end of the bracket 1 through a bearing, and the inner wall of the bracket 1 away from the end of the outer gear cylinder 2 9 is rotatably connected to the end of the rotating shaft 2 located inside it through a bearing, so that the rotation of the rotating shaft 2 is more stable.
[0027] Working principle: The force arm formed between the cam 3 and the rotating shaft 2 is relatively long. When the rotating shaft 2 rotates, one end of the cam 3 can pull the support frame 5 up through the traction shaft 4, so that the support rod 6 can rise to a higher distance, thereby enabling the isolation knife gate to be opened, which brings convenience and accuracy to use. The sleeve 10 meshes with the outer walls of the outer gear cylinder 1 8 and the outer gear cylinder 2 9 respectively through the inner tooth grooves 11 on the inner wall. When the rotating shaft 2 needs to be rotated, the sleeve 10 is completely pushed to the outer wall of the outer gear cylinder 2 9 On the upper side, the sleeve 10 cannot mesh with the outer gear cylinder 8, and the rotating shaft 2 can rotate directly. When the rotating shaft 2 needs to be limited, the sleeve 10 moves to the position of the outer gear cylinder 8, so that the two ends of the inner tooth groove 11 on the inner wall of the sleeve 10 are respectively meshed with the outer walls of the outer gear cylinder 8 and the outer gear cylinder 9, thereby achieving the limiting effect of the rotating shaft 2. This method does not require pushing and pulling the rotating shaft 2. The limiting method is simple and convenient. There is no need to worry about the cam 3 being unable to move due to the support rod 6 or the moving distance being too short.
[0028] The circuits, electronic components and control modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to software and methods.
[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A high-voltage vacuum load switch, comprising a bracket (1), Features: A rotating shaft (2) is inserted through the bracket (1), a cam (3) is fixedly inserted through the outer wall of the rotating shaft (2) at one end inside the bracket (1), a traction shaft (4) is arranged at one end of the cam (3) away from the rotating shaft (2), a support frame (5) is arranged outside the cam (3) at the position of the traction shaft (4), the two ends of the bottom of the support frame (5) are respectively rotatably connected to the two ends of the traction shaft (4), a support rod (6) is fixed at the top of the support frame (5), a connecting ring (7) is arranged at the top of the support rod (6), an outer gear cylinder (8) is sleeved and fixedly arranged on the outer wall of the rotating shaft (2) at one end outside the bracket (1), an outer gear cylinder (9) is fixedly arranged on the outer wall of the bracket (1), a sleeve (10) is arranged between the outer gear cylinder (8) and the outer gear cylinder (9), and an inner tooth groove (11) is cut on the inner wall of the sleeve (10).
2. A high voltage vacuum load switch according to claim 1, Features: The position of the second outer gear cylinder (9) matches the position of the first outer gear cylinder (8), the outer diameter of the second outer gear cylinder (9) matches the outer diameter of the first outer gear cylinder (8), and the rotating shaft (2) and the second outer gear cylinder (9) are connected through each other.
3. A high voltage vacuum load switch according to claim 1, Features: The inner diameter of the second outer gear cylinder (9) is larger than the outer diameter of the rotating shaft (2), the length of the second outer gear cylinder (9) matches the length of the sleeve (10), and the length of the second outer gear cylinder (9) is twice the length of the first outer gear cylinder (8).
4. A high voltage vacuum load switch according to claim 1, Features: The sleeve (10) is respectively sleeved on the outer walls of the outer gear cylinder 1 (8) and the outer gear cylinder 2 (9), and the sleeve (10) is respectively meshed and connected with the outer walls of the outer gear cylinder 1 (8) and the outer gear cylinder 2 (9) through the inner tooth groove (11).
5. A high voltage vacuum load switch according to claim 1, Features: The rotating shaft (2) passes through the outer wall of one end of the outer gear cylinder (8) and is provided with a handle (12).
6. A high voltage vacuum load switch according to claim 1, Features: The rotating shaft (2) is rotatably connected to one end of the bracket (1) passing through it via a bearing, and the inner side wall of the bracket (1) away from the end of the outer gear cylinder (9) is rotatably connected to the end of the rotating shaft (2) located inside it via a bearing.