Power generator neutral point grounding transformer disconnecting link locking device

Abstract

The utility model relates to the technical field of generator maintenance, in particular to a generator neutral point grounding transformer knife switch locking device, which comprises a static contact, a moving contact and a locking device connected on the moving contact, the locking device comprises a support frame, a connecting piece and a locking assembly, the support frame is arranged on one side of the moving contact, a chute is arranged in the support frame, and the connecting piece is arranged on the locking assembly. The connecting piece comprises a sliding block connected in the sliding groove in a sliding mode, the locking assembly is connected with the connecting piece, the locking assembly comprises a locking block, a clamping jaw I and a clamping jaw II, the clamping jaw I and the clamping jaw II are arranged in the locking block, the clamping jaw I and the clamping jaw II are arranged at the upper end and the lower end of the locking block respectively, and the clamping jaw I and the clamping jaw II can get close to each other or get away from each other. And the clamping jaw I and the clamping jaw II clamp the moving contact. According to the utility model, the locking device is arranged at one side of the ground-changing disconnecting link and does not need to be frequently carried by a worker, and when the moving contact is separated from the static contact, the clamping jaw I and the clamping jaw II clamp the moving contact, so that misoperation of the worker is prevented, and the safety of a maintenance process is protected to a great extent.

Description

Technical Field

[0001] The utility model relates to the technical field of generator maintenance, in particular to a generator neutral point grounding switch locking device. Background Art

[0002] Vertical shaft semi-umbrella generator is a widely used power generation device in the power industry. Due to its large power, the generator needs to be regularly inspected and maintained. During the inspection, the grounding switch is opened to separate the moving contact and the static contact. If the worker mistakenly closes the moving contact and the static contact during the inspection, it will cause a serious safety accident. After the moving contact and the static contact are separated, a locking device needs to be set to prevent the moving contact and the static contact from contacting, so as to avoid safety accidents.

[0003] Existing locking devices are often of the ring type, which are mounted on the moving contact. When the moving contact moves, the locking device will rub against the moving contact, affecting the surface quality of the moving contact and causing problems in subsequent connections. Since there are many generators that need to be repaired, workers need to carry the locking device each time, install the locking device one by one, and then remove them one by one after the inspection, which increases the overall inspection time. In addition, the ring-type structure is easy to fall off, making it difficult to ensure the quality of the locking. Utility Model Content

[0004] In response to the technical problems existing in the background technology, the purpose of the present utility model is to provide a generator neutral point grounding switch locking device, which is directly arranged on one side of the grounding switch. During maintenance, workers can directly adjust the locking device and fix the grounding switch.

[0005] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0006] A generator neutral point grounding switch locking device includes a static contact, a moving contact and a locking device connected to the moving contact, the locking device includes a support frame, a connecting piece and a locking assembly, the support frame is arranged on one side of the moving contact, and a slide groove is provided inside the support frame, the connecting piece includes a slider slidably connected in the slide groove, the locking assembly is connected to the connecting piece, the locking assembly includes a locking block and clamping jaws I and II arranged in the locking block, the clamping jaws I and II are respectively arranged at the upper and lower ends of the locking block, and the clamping jaws I and II can approach or move away from each other, and the clamping jaws I and II clamp the moving contact.

[0007] Preferably, the interior of the locking block is hollow, and a through slot I and a through slot II are respectively provided at both ends of the locking block, the clamping jaw I is provided in the through slot I, and the clamping jaw II is provided in the through slot II.

[0008] Preferably, a gear is rotatably provided in the locking block, and the clamping jaw I and the clamping jaw II are respectively provided with a rack meshing with the gear, and the rotation of the gear drives the clamping jaw I and the clamping jaw II to move.

[0009] Preferably, a hole is provided at one end of the locking block, a driving rod is fixedly provided at one end of the gear, the driving rod is connected at the position of the hole, and a locking hole is provided at one end of the driving rod.

[0010] Preferably, the lock hole is equipped with a key, the key is inserted into the lock hole, and the gear is rotated by rotating the key.

[0011] Preferably, a connecting rod is provided between the locking block and the sliding block.

[0012] Preferably, a protrusion is provided on the clamping jaw I and the clamping jaw II respectively, and when the clamping jaw I and the clamping jaw II are in contact with the moving contact respectively, the protrusion extends into the moving contact.

[0013] Preferably, the slider is connected to a clamping plate, the clamping plate is connected to a bolt, and the bolt passes through the clamping plate and is connected to the slider.

[0014] The utility model has the following advantages and beneficial effects:

[0015] In this utility model, the locking device is installed directly on one side of the grounding transformer's moving contact, eliminating the need for workers to frequently carry it. Furthermore, when the moving and stationary contacts separate, jaws I and II clamp the moving contact, preventing operator error and maximizing safety during maintenance. The overall structure is simple and easy to operate, allowing workers to quickly and efficiently connect, reducing maintenance time and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a generator neutral point grounding switch locking device provided by the utility model;

[0017] Figure 2 This is a schematic structural diagram of a generator neutral point grounding switch locking device provided by the utility model;

[0018] Figure 3 A schematic diagram of the locking block structure of a generator neutral point grounding switch locking device provided by the utility model;

[0019] Figure 4 A schematic diagram of the connection between the jaws I, II and gears of a generator neutral point grounding switch locking device provided by the utility model;

[0020] Figure 5 A schematic diagram of the gear structure of a generator neutral point grounding switch locking device provided by the utility model;

[0021] Figure 6 for Figure 1 A structural diagram from another perspective;

[0022] Icons: 1-grounding switch, 101-moving contact, 102-static contact, 2-locking device, 21-support frame, 211-slide groove, 22-slider, 23-clamp, 231-bolt, 3-locking block, 31-through groove I, 32-through groove II, 33-hole, 4-clamping jaw I, 41-clamping jaw II, 42-rack, 43-bump, 5-gear, 6-driving rod, 61-locking hole, 62-key, 7-connecting rod. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0025] Example

[0026] like Figure 1 、 2 As shown in Figures 3 and 6, a generator neutral point grounding switch locking device includes a static contact 102, a moving contact 101 and a locking device 2 connected to the moving contact 101. The locking device 2 includes a support frame 21, a connecting piece and a locking assembly. The support frame 21 is arranged on one side of the moving contact 101, and a slide groove 211 is arranged inside the support frame 21. The connecting piece includes a slider 22 slidably connected in the slide groove 211. The locking assembly is connected to the connecting piece. The locking assembly includes a locking block 3 and a clamping jaw Ⅰ4 and a clamping jaw Ⅱ41 arranged in the locking block 3. The clamping jaw Ⅰ4 and the clamping jaw Ⅱ41 are respectively arranged at the upper and lower ends of the locking block 3, and the clamping jaw Ⅰ4 and the clamping jaw Ⅱ41 can approach or move away from each other. The clamping jaw Ⅰ4 and the clamping jaw Ⅱ41 approach each other to clamp the moving contact 101.

[0027] like Figure 1 、 2As shown in Figures 3 and 6, the support frame 21 can be placed on the ground by welding or plugging, so that the entire device is fixed on one side of the moving contact 101. Workers do not need to carry several locking devices 2 every time. During the maintenance process, workers only need to go directly to the grounding transformer 1, separate the moving contact 101 and the static contact 102, and connect the moving contact 101 and the locking device 2.

[0028] like Figure 1-6 As shown, the interior of the locking block 3 is hollow, and the two ends of the locking block 3 are respectively provided with a through groove Ⅰ31 and a through groove Ⅱ32, the clamping jaw Ⅰ4 is provided in the through groove Ⅰ31, the clamping jaw Ⅱ41 is provided in the through groove Ⅱ32, the clamping jaw Ⅰ4 can move in the through groove Ⅰ31, the clamping jaw Ⅱ41 can move in the through groove Ⅱ32, and a gear 5 is rotatably provided in the locking block 3, one end of the gear 5 and the locking block 3 are connected by a shaft, and the clamping jaw Ⅰ4 and the clamping jaw Ⅱ41 are respectively provided with a rack 42 that meshes with the gear 5, and the gear 5 rotates to drive The jaws I4 and II41 move, and when the gear 5 rotates counterclockwise, the jaws I4 and II41 approach each other, and when the gear 5 rotates clockwise, the jaws I4 and II41 move away from each other. The structure of the gear 5 and the rack 42 is adopted in the present invention. The purpose is to allow the jaws I4 and II41 to move relative to each other in the locking block 3 to achieve the function of clamping the moving contact 101, but it is not limited to the gear 5 and rack 42 structure. A telescopic structure such as a cylinder or a motor can also be used to achieve this function. A protrusion 43 is respectively provided on the clamping jaw I4 and the clamping jaw II 41. When the clamping jaw I4 and the clamping jaw II 41 respectively contact the moving contact 101, the protrusion 43 extends into the moving contact 101. The protrusion 43 stabilizes the moving contact 101 and strengthens the connection relationship between the moving contact 101 and the locking device 2. At the same time, after the protrusion 43 and the moving contact 101 are connected, the contact area between the two is small, which greatly protects the surface quality of the moving contact 101 and increases the service life of the moving contact 101.

[0029] like Figure 1-5 As shown, a hole 33 is provided at one end of the locking block 3, and a driving rod 6 is fixedly provided at one end of the gear 5. The driving rod 6 is connected at the position of the hole 33. A locking hole 61 is provided at one end of the driving rod 6. The locking hole 61 is matched with a key 62. The key 62 extends into the locking hole 61. Rotating the key 62 drives the gear 5 to rotate. When the locking device 2 and the moving contact 101 are connected, their positions are adjusted by the key 62, thereby preventing workers from misoperating the moving contact 101.

[0030] like Figure 1 、 2As shown in Figures 3, 4, and 6, a connecting rod 7 is provided between the locking block 3 and the slider 22. After the worker separates the moving contact 101 and the static contact 102, he pulls the slider 22 to move, so that the clamping jaws Ⅰ4 and the clamping jaws Ⅱ41 are respectively placed on the upper and lower sides of the moving contact 101. When the moving contact 101 and the static contact 102 need to be connected, the slider 22 is pulled to reset, so that the clamping jaws Ⅰ4 and the clamping jaws Ⅱ41 leave the upper and lower sides of the moving contact 101. The sliding slider 22 can realize the adjustment of the position of the locking device 2, making the entire maintenance process efficient and fast.

[0031] like Figure 1 、 2 As shown in Figures 3 and 6, a clamping plate 23 is connected to the slider 22, and a bolt 231 is connected to the clamping plate 23. The bolt 231 passes through the clamping plate 23 and is connected to the slider 22. The clamping plate 23 is connected to the other side of the support frame 21. When the position of the slider 22 is adjusted, the bolt 231 is unscrewed to separate the clamping plate 23 and the support frame 21. When the slider 22 moves to the specified position, the bolt 231 is screwed in to make the clamping plate 23 and the support frame 21 fit tightly. The clamping plate 23, the support frame 21 and the slider 22 are fixed. At this time, the locking device 2 and the moving contact 101 are fixed to prevent workers from operating it incorrectly.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A generator neutral point grounding switch locking device, comprising a static contact, a moving contact and a locking device connected to the moving contact, characterized in that: The locking device includes a support frame, a connecting piece and a locking assembly. The support frame is arranged on one side of the moving contact, and a slide groove is arranged inside the support frame. The connecting piece includes a slider slidably connected in the slide groove. The locking assembly is connected to the connecting piece. The locking assembly includes a locking block and clamping jaws I and II arranged in the locking block. The clamping jaws I and II are respectively arranged at the upper and lower ends of the locking block, and the clamping jaws I and II can approach or move away from each other. The clamping jaws I and II approach each other to clamp the moving contact.

2. A generator neutral point grounding switch locking device according to claim 1, characterized in that: The interior of the locking block is hollow, and a through slot I and a through slot II are respectively provided at both ends of the locking block. The clamping claw I is arranged in the through slot I, and the clamping claw II is arranged in the through slot II.

3. The generator neutral point grounding switch locking device according to claim 1, characterized in that: A gear is rotatably provided in the locking block, and racks meshing with the gear are respectively provided on the clamping jaws I and II. The rotation of the gear drives the clamping jaws I and II to move.

4. A generator neutral point grounding switch locking device according to claim 3, characterized in that: One end of the locking block is provided with a hole, one end of the gear is fixedly provided with a driving rod, the driving rod is connected at the position of the hole, and one end of the driving rod is provided with a locking hole.

5. A generator neutral point grounding switch locking device according to claim 4, characterized in that: The lock hole is matched with a key, which is inserted into the lock hole and rotated to drive the gear to rotate.

6. The generator neutral point grounding switch locking device according to claim 1, characterized in that: A connecting rod is provided between the locking block and the sliding block.

7. The generator neutral point grounding switch locking device according to claim 1, characterized in that: The clamping jaw I and the clamping jaw II are respectively provided with a protrusion. When the clamping jaw I and the clamping jaw II are respectively in contact with the moving contact, the protrusion extends into the moving contact.

8. The generator neutral point grounding switch locking device according to claim 1, characterized in that: The slider is connected with a clamping plate, the clamping plate is connected with a bolt, and the bolt passes through the clamping plate and is connected with the slider.

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