Box transformer substation isolation switch mechanical locking mechanism

Abstract

The utility model discloses a mechanical locking mechanism of a box transformer substation isolation switch, and relates to the technical field of power equipment, in particular to a mechanical locking mechanism of a box transformer substation isolation switch, which comprises a base and a control box, a positioning sliding plate is slidably connected in the control box, and a connecting sliding rod is arranged on the upper surface of the positioning sliding plate. Limiting frames are arranged at the ends, away from the positioning sliding plates, of the connecting sliding rods, limiting sliding grooves are formed in the limiting frames, connecting sliding plates are slidably connected into the limiting sliding grooves, and adjusting racks are arranged on the outer surfaces of the connecting sliding plates. According to the mechanical locking mechanism for the isolation switch of the box transformer substation, a positioning sliding plate, a limiting frame, a connecting sliding plate, an adjusting rack, a transmission gear, a connecting spring, a clamping frame, a control sliding plate, a positioning hole, a limiting clamping block, a first spring, a control handle, a second spring, a U-shaped positioning frame and a connecting handle are arranged in a matched manner; therefore, the mechanical locking mechanism of the isolation switch of the box transformer substation has the effects of mechanical locking protection and improved use safety.

Description

Technical Field

[0001] The utility model relates to the technical field of power equipment, in particular to a mechanical locking mechanism for isolating switches of box-type substations. Background Technique

[0002] The isolating switch on the 35 kV side of the box-type substation needs to have the function of "preventing the isolating switch from being pulled or closed under load" within the "five-prevention" requirements. The isolating switch and the corresponding circuit breaker do not form a mechanical lock, and accidents of pulling or closing the isolating switch under load are likely to occur during the switching operation.

[0003] The existing isolating switches cannot be mechanically locked and protected, which easily leads to misoperation accidents. At the same time, most of the existing locking mechanisms are fixed by bolts, and it is very troublesome to disassemble and replace them. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides a mechanical locking mechanism for isolating switches of box-type substations, and solves the problems raised in the above background technique.

[0006] (2) Technical Solutions

[0007] To achieve the above objectives, the utility model is realized through the following technical solutions: A mechanical locking mechanism for isolating switches of box-type substations includes a base and a control box. A positioning slide plate is slidably connected inside the control box. A connecting slide rod is arranged on the upper surface of the positioning slide plate. One end of the connecting slide rod away from the positioning slide plate is provided with a limit frame. A limit slide groove is opened inside the limit frame. A connecting slide plate is slidably connected inside the limit slide groove. An adjusting rack is arranged on the outer surface of the connecting slide plate. A support shaft rod is arranged inside the limit frame. A transmission gear is rotatably connected to the outer surface of the support shaft rod. The transmission gear meshes with the adjusting rack. A connecting through hole is opened inside the connecting slide plate. A support slide rod is slidably connected inside the connecting through hole. One end of the support slide rod is arranged on the inner wall of the limit frame. The end of the support slide rod away from the limit frame is provided with a limit piece. A connecting spring is arranged on the outer surface of the connecting slide plate. One end of the connecting spring is arranged on the inner wall of the limit frame. A connecting seat is arranged on the upper surface of the connecting slide plate. A clamping frame is arranged on the upper surface of the connecting seat.

[0008] Optionally, the number of connecting slide plates in the limit frame is two. The adjusting racks on the two connecting slide plates are centrosymmetric about the center of the transmission gear. A control slide plate is arranged on the outer surface of one of the connecting slide plates. A positioning hole is arranged on the lower surface of the control slide plate. The number of positioning holes is several.

[0009] Optionally, a positioning box is provided on the outer surface of the limit frame. A limit clamping block is slidably connected inside the positioning box. A connecting plate is provided on the outer surface of the limit clamping block. A limit sliding rod is slidably connected inside the connecting plate. Both ends of the limit sliding rod are provided on the inner wall of the positioning box. A first spring is provided on the lower surface of the connecting plate. A connecting column is provided on the lower surface of the connecting plate. A control handle is provided at the lower end of the connecting column.

[0010] Optionally, a fixed sliding rod is provided on the outer surface of the control box. A U-shaped positioning frame is slidably connected to the outer surface of the fixed sliding rod. A second spring is provided on the outer surface of the U-shaped positioning frame. One end of the second spring is provided with a fixed piece, and the fixed piece is provided at one end of the fixed sliding rod. A connecting handle is provided on the outer surface of the U-shaped positioning frame.

[0011] Optionally, the number of the fixed sliding rods and the second springs is several, and they are evenly distributed outside the U-shaped positioning frame.

[0012] Optionally, an installation bin is opened at the lower end of the control box. A positioning shaft rod is provided inside the installation bin. A steering gear is rotatably connected to the outer surface of the positioning shaft rod. A connecting rack is engaged with the outer surface of the steering gear. One end of the connecting rack is provided with a sliding plate. A connecting clamping block is provided at the lower end of the sliding plate. A guiding sliding rod is slidably connected inside the sliding plate. One end of the guiding sliding rod is provided with a positioning piece. A third spring is provided on the outer surface of the positioning piece. One end of the third spring is provided on the outer surface of the sliding plate.

[0013] Optionally, a control rack is slidably connected inside the installation bin. An operating handle is provided at one end of the control rack. The control rack is engaged with the steering gear.

[0014] Optionally, a fixed clamping groove is opened on the upper surface of the base. The position of the fixed clamping groove is adapted to the position of the connecting clamping block. A high-voltage pole column is provided on the upper surface of the base. A knife switch is provided at the upper end of the high-voltage pole column.

[0015] The utility model provides a mechanical locking mechanism for a box-type substation isolating knife switch, which has the following beneficial effects:

[0016] 1. Through the cooperative setting of the positioning sliding plate, the limit frame, the connecting sliding plate, the adjusting rack, the transmission gear, the connecting spring, the clamping frame, the control sliding plate, the positioning hole, the limit clamping block, the first spring, the control handle, the second spring, the U-shaped positioning frame, and the connecting handle, the mechanical locking mechanism for the box-type substation isolating knife switch has the effect of mechanical locking protection and improves the use safety.

[0017] 2. The mechanical locking mechanism of the box-type substation isolating switch, through the cooperation of the steering gear, connecting rack, sliding plate, connecting block, third spring, control rack, operating handle and fixed card slot, enables the mechanical locking mechanism of the box-type substation isolating switch to have the effect of facilitating the quick installation and disassembly of the locking mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 is a front-view structural schematic diagram of the present invention;

[0020] Figure 3 is an internal structural schematic diagram of the limit frame of the present invention;

[0021] Figure 4 is an internal structural schematic diagram of the positioning box of the present invention;

[0022] Figure 5 is an internal structural schematic diagram of the control box of the present invention.

[0023] In the figure: 1. Base; 2. Control box; 3. Positioning slide; 4. Limit frame; 5. Connecting slide; 6. Adjusting rack; 7. Transmission gear; 8. Connecting spring; 9. Clamping frame; 10. Control slide; 11. Positioning hole; 12. Positioning box; 13. Limit block; 14. First spring; 15. Control handle; 16. U-shaped positioning frame; 17. Second spring; 18. Connecting handle; 19. Steering gear; 20. Connecting rack; 21. Sliding plate; 22. Connecting block; 23. Third spring; 24. Control rack; 25. Operating handle; 26. Fixed card slot; 27. High-voltage pole column; 28. Isolating switch. SPECIFIC EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] Embodiment 1

[0026] A mechanical locking mechanism for the isolating switch of a box-type substation, comprising a base 1 and a control box 2. A positioning slide plate 3 is slidably connected inside the control box 2. A connecting slide rod is arranged on the upper surface of the positioning slide plate 3. A limiting frame 4 is arranged at one end of the connecting slide rod away from the positioning slide plate 3. A limiting chute is opened inside the limiting frame 4. A connecting slide plate 5 is slidably connected inside the limiting chute. An adjusting rack 6 is arranged on the outer surface of the connecting slide plate 5. A support shaft rod is arranged inside the limiting frame 4. A transmission gear 7 is rotatably connected to the outer surface of the support shaft rod. The transmission gear 7 meshes with the adjusting rack 6. A connecting through hole is opened inside the connecting slide plate 5. A support slide rod is slidably connected inside the connecting through hole. One end of the support slide rod is arranged on the inner wall of the limiting frame 4. A limiting piece is arranged at the end of the support slide rod away from the limiting frame 4. A connecting spring 8 is arranged on the outer surface of the connecting slide plate 5. One end of the connecting spring 8 is arranged on the inner wall of the limiting frame 4. A connecting seat is arranged on the upper surface of the connecting slide plate 5. A clamping bracket 9 is arranged on the upper surface of the connecting seat. The number of connecting slide plates 5 in the limiting frame 4 is two. The adjusting racks 6 on the two connecting slide plates 5 are centrosymmetric with respect to the center of the transmission gear 7. A control slide plate 10 is arranged on the outer surface of one of the connecting slide plates 5. A positioning hole 11 is arranged on the lower surface of the control slide plate 10. The number of the positioning holes 11 is several. A positioning box 12 is arranged on the outer surface of the limiting frame 4. A limiting block 13 is slidably connected inside the positioning box 12. A connecting plate is arranged on the outer surface of the limiting block 13. A limiting slide rod is slidably connected inside the connecting plate. Both ends of the limiting slide rod are arranged on the inner wall of the positioning box 12. A first spring 14 is arranged on the lower surface of the connecting plate. A connecting column is arranged on the lower surface of the connecting plate. A control handle 15 is arranged at the lower end of the connecting column. A fixed slide rod is arranged on the outer surface of the control box 2. A U-shaped positioning frame 16 is slidably connected to the outer surface of the fixed slide rod. A second spring 17 is arranged on the outer surface of the U-shaped positioning frame 16. One end of the second spring 17 is provided with a fixed piece, and the fixed piece is arranged at one end of the fixed slide rod. A connecting handle 18 is arranged on the outer surface of the U-shaped positioning frame 16. The number of the fixed slide rod and the second spring 17 is several, and they are evenly distributed outside the U-shaped positioning frame 16. An installation bin is opened at the lower end of the control box 2. A positioning shaft rod is arranged inside the installation bin. A steering gear 19 is rotatably connected to the outer surface of the positioning shaft rod. A connecting rack 20 meshes with the outer surface of the steering gear 19. One end of the connecting rack 20 is provided with a sliding plate 21. A connecting block 22 is arranged at the lower end of the sliding plate 21. A guiding slide rod is slidably connected inside the sliding plate 21. A positioning piece is arranged at one end of the guiding slide rod. A third spring 23 is arranged on the outer surface of the positioning piece. One end of the third spring 23 is arranged on the outer surface of the sliding plate 21. A control rack 24 is slidably connected inside the installation bin. An operating handle 25 is arranged at one end of the control rack 24. The control rack 24 meshes with the steering gear 19. A fixed card slot 26 is opened on the upper surface of the base 1. The position of the fixed card slot 26 is adapted to the position of the connecting block 22. A high-voltage pole column 27 is arranged on the upper surface of the base 1.A knife switch 28 is provided at the upper end of the high-voltage terminal post 27.,

[0027] In order to endow the mechanical interlock mechanism of the box-type transformer isolation knife switch with mechanical interlock protection, improve the effect of use safety, and endow the mechanical interlock mechanism of the box-type transformer isolation knife switch with the effect of facilitating the quick installation and disassembly of the interlock mechanism, as shown in the appendix Figures 1-5As shown, the present application adopts the following structure. Through the cooperation of the positioning slide plate 3, the limiting frame 4, the connecting slide plate 5, the adjusting rack 6, the transmission gear 7, the connecting spring 8, the clamping frame 9, the control slide plate 10, the positioning hole 11, the limiting block 13, the first spring 14, the control handle 15, the second spring 17, the U-shaped positioning frame 16, the connecting handle 18, the steering gear 19, the connecting rack 20, the sliding plate 21, the connecting block 22, the third spring 23, the control rack 24, the operating handle 25 and the fixed clamping groove 26, during the use process, when locking, pull the connecting handle 18 to make the U-shaped positioning frame 16 disengage from the contact with the positioning slide plate 3, squeeze the second spring 17. Subsequently, slide the positioning slide plate 3 to the bottom layer of the control box 2. Then, release the connecting handle 18. Under the elastic force of the second spring 17, the U-shaped positioning frame 16 limits the positioning slide plate 3. Close the disconnecting switch 28. Then, push the control slide plate 10. Since one side surface of the limiting block 13 is an arc surface, the limiting block 13 slides in different positioning holes 11, thereby driving the connecting slide plate 5 to slide. Under the action of the adjusting rack 6 and the transmission gear 7, drive the two connecting slide plates 5 to slide, so that the two clamping frames 9 are buckled with each other to complete the mechanical locking of the disconnecting switch 28 (the other side surface of the limiting block 13 is a flat surface. Thus, when the two clamping frames 9 are buckled, under the action of the limiting block 13, the connecting slide plate 5 is limited to prevent the clamping frame 9 from opening by itself). When the disconnecting switch 28 needs to be opened or closed, pull the control handle 15 to pull the limiting block 13, so that the limiting block 13 disengages from the contact with the positioning hole 11. Then, pull the control slide plate 10 to separate the clamping frames 9, so that the disconnecting switch 28 can be freely opened. At the same time, when unlocking and limiting are required, pull the connecting handle 18 to make the U-shaped positioning frame 16 disengage from the contact with the positioning slide plate 3, squeeze the second spring 17. Subsequently, slide the positioning slide plate 3 to the top layer of the control box 2. Then, release the connecting handle 18. Under the elastic force of the second spring 17, the U-shaped positioning frame 16 limits the positioning slide plate 3. Push the control slide plate 10. Since one side surface of the limiting block 13 is an arc surface, the limiting block 13 slides in different positioning holes 11, thereby driving the connecting slide plate 5 to slide. Under the action of the adjusting rack 6 and the transmission gear 7, drive the two connecting slide plates 5 to slide, so that the two clamping frames 9 are buckled with each other. This time, the clamping frames 9 limit the disconnecting switch 28 to prevent the occurrence of mislocking. When the locking mechanism needs to be disassembled, pull the operating handle 25 to drive the control rack 24 to slide, thereby driving the steering gear 19 to rotate. Under the action of the connecting rack 20, the sliding plate 21 slides towards the middle at the same time, squeezing the third spring 23, so that the connecting block 22 disengages from the fixed clamping groove 26. During installation, repeat the above steps to make the mechanical locking mechanism of the box-type substation disconnecting switch have the effect of mechanical locking protection and improve the use safety, and make the mechanical locking mechanism of the box-type substation disconnecting switch have the effect of facilitating the rapid installation and disassembly of the locking mechanism.

[0028] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. A mechanical interlocking mechanism for the isolating switch of a box-type substation, comprising a base and a control box, characterized in that: A positioning slide plate is slidably connected inside the control box. A connecting slide rod is arranged on the upper surface of the positioning slide plate. A limiting frame is arranged at one end of the connecting slide rod away from the positioning slide plate. A limiting chute is opened inside the limiting frame. A connecting slide plate is slidably connected inside the limiting chute. An adjusting rack is arranged on the outer surface of the connecting slide plate. A support shaft rod is arranged inside the limiting frame. A transmission gear is rotatably connected to the outer surface of the support shaft rod. The transmission gear meshes with the adjusting rack. A connecting through hole is opened inside the connecting slide plate. A support slide rod is slidably connected inside the connecting through hole. One end of the support slide rod is arranged on the inner wall of the limiting frame. A limiting piece is arranged at the end of the support slide rod away from the limiting frame. A connecting spring is arranged on the outer surface of the connecting slide plate. One end of the connecting spring is arranged on the inner wall of the limiting frame. A connecting seat is arranged on the upper surface of the connecting slide plate. A clamping frame is arranged on the upper surface of the connecting seat.

2. The mechanical interlocking mechanism of the disconnector for the box-type substation according to claim 1, characterized in that: The number of connecting slide plates in the limiting frame is two. The adjusting racks on the two connecting slide plates are centrosymmetric about the center of the transmission gear. A control slide plate is arranged on the outer surface of one of the connecting slide plates. A positioning hole is arranged on the lower surface of the control slide plate. The number of the positioning holes is several.

3. The mechanical interlocking mechanism of the disconnector for the box-type substation according to claim 1, characterized in that: A positioning box is arranged on the outer surface of the limiting frame. A limiting block is slidably connected inside the positioning box. A connecting plate is arranged on the outer surface of the limiting block. A limiting slide rod is slidably connected inside the connecting plate. Both ends of the limiting slide rod are arranged on the inner wall of the positioning box. A first spring is arranged on the lower surface of the connecting plate. A connecting column is arranged on the lower surface of the connecting plate. A control handle is arranged at the lower end of the connecting column.

4. A mechanical interlocking mechanism for the disconnector of a box-type substation according to claim 1, characterized in that: A fixed slide rod is arranged on the outer surface of the control box. A U-shaped positioning frame is slidably connected to the outer surface of the fixed slide rod. A second spring is arranged on the outer surface of the U-shaped positioning frame. One end of the second spring is provided with a fixed piece. The fixed piece is arranged at one end of the fixed slide rod. A connecting handle is arranged on the outer surface of the U-shaped positioning frame.

5. A mechanical interlocking mechanism for isolating switches in a box-type substation according to claim 1, characterized in that: The number of the fixed slide rods and the second springs is several, and they are evenly distributed outside the U-shaped positioning frame.

6. A mechanical interlocking mechanism for the isolating switch of a box-type substation according to claim 1, characterized in that: An installation bin is opened at the lower end of the control box. A positioning shaft rod is arranged inside the installation bin. A steering gear is rotatably connected to the outer surface of the positioning shaft rod. A connecting rack is meshed with the outer surface of the steering gear. One end of the connecting rack is provided with a sliding plate. A connecting block is arranged at the lower end of the sliding plate. A guiding slide rod is slidably connected inside the sliding plate. One end of the guiding slide rod is provided with a positioning piece. A third spring is arranged on the outer surface of the positioning piece. One end of the third spring is arranged on the outer surface of the sliding plate.

7. A mechanical interlocking mechanism for the disconnector of a box-type substation according to claim 1, characterized in that: A control rack is slidably connected inside the installation bin. An operating handle is arranged at one end of the control rack. The control rack meshes with the steering gear.

8. The mechanical interlocking mechanism for the disconnector of the box-type substation according to claim 1, characterized in that: A fixed clamping groove is opened on the upper surface of the base. The position of the fixed clamping groove is adapted to the position of the connecting block. A high-voltage pole column is arranged on the upper surface of the base. A knife switch is arranged at the upper end of the high-voltage pole column.

Images