Double-operation-hole three-station disconnecting switch mechanism

Abstract

The utility model belongs to the technical field of disconnecting switches, and particularly discloses a double-operation-hole three-station disconnecting switch mechanism, which comprises a closing operation shaft sleeve, a grounding operation shaft sleeve, a front mounting plate, a rear mounting plate and mounting clamping plates, the mounting clamping plates are positioned between the front mounting plate and the rear mounting plate, and the mounting clamping plates comprise a left mounting clamping plate and a right mounting clamping plate. A switch-on microswitch group, a grounding microswitch group and a switch-off microswitch group are arranged above the installation clamping plate, the switch-on operation shaft sleeve and the grounding operation shaft sleeve are both rotatably connected to the front installation plate, and the switch-on operation shaft sleeve and the grounding operation shaft sleeve are both provided with first straight gears. A second spur gear is arranged between the closing operation shaft sleeve and the grounding operation shaft sleeve, the first spur gear and the second spur gear are meshed together, an output shaft is fixed on the second spur gear, and a handle is inserted or operated into the closing operation shaft sleeve or the grounding operation shaft sleeve according to operation requirements, rotates clockwise or anticlockwise and transmits to the output shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of isolating switches, in particular to a double-operating-hole three-station isolating switch mechanism. Background Art

[0002] Existing isolating switches are classified into two categories: one is a quick-acting isolating switch that uses a spring over-center mechanism. Relying on the energy of the spring when it passes the center, the isolating switch performs an instantaneous action to accelerate closing, opening, and grounding. Since the action of this type of switch is impactful, its life and appearance are limited, and it is mostly used in isolating switches with a rated current of 630A and below. The second type is a non-instantaneous isolating switch, which usually uses a screw to rotate and push a crank arm or a screw nut to achieve continuous movement of the moving contact on the crank arm or the screw nut to complete the closing, opening, and grounding actions of the isolating switch. Isolating switches with a rated current of more than 630A basically use this method. The present invention is directed to the mechanism of the second type of isolating switch.

[0003] The existing single-hole operated three-position isolating switch mechanism realizes the operation function in the following way:

[0004] a. Transmission

[0005] Insert the operating shaft on the mechanism through the handle, rotate the operating shaft through the handle, there is a gear on the operating shaft, through different gear ratios, it is transmitted to the output shaft on the mechanism, a sprocket is installed on the output shaft, through chain transmission, it is transmitted to the lead screw with a sprocket on the isolating switch, after the lead screw rotates, it pushes the isolating switch forward and backward to realize the closing, opening and grounding of the isolating switch.

[0006] b. Interlock

[0007] During the operation of the mechanism, one transmission route enables the disconnector to operate continuously, and the other interlocking route is that the output shaft of the mechanism passes through the worm gear structure, which proportionally corresponds the linear travel of the disconnector to the circumference of the interlocking turntable on the turbine shaft of the mechanism. When the three-position disconnector is manually operated to the closing, opening or grounding position, the interlocking turntable will also turn to the corresponding position, and can output mechanical signals, such as pushing and pulling the interlocking rod, and finally limit the operating handle to tell the operator that the operation has been completed and manual operation cannot continue.

[0008] c. Electrical signal output node

[0009] In addition to the interlocking turntable on the mechanism's turbine shaft, a microswitch slice is also installed in the axial direction. The slice is synchronized with the turbine shaft. When the three-position isolating switch is closed, opened, and grounded, the slice on the three-position operating mechanism will also rotate to the corresponding position, triggering the microswitch at this position to control the motor to stop.

[0010] However, the disadvantages of the existing solutions are as follows:

[0011] 1. The mechanism lacks mechanical limit protection for the isolating switch, which can easily cause the isolating switch transmission to break.

[0012] When the mechanism is electrically closed or grounded, if the triggered microswitch fails, the motor will not stop, causing the isolating switch to continue moving until it is stuck. Due to the large torque of the motor, the weak points on the motion chain of the isolating switch will be damaged, resulting in a serious malfunction in which the isolating switch cannot be operated manually or electrically.

[0013] 2. It is easy to operate incorrectly, causing accidents

[0014] On the operating mechanism, since the isolation closing and opening operations and the grounding closing and opening operations are all in the same operating hole, there is no need to change the operating position, and the objective operating boundaries of isolation closing and opening and grounding closing and opening become blurred. When the manual operating mechanism changes from the isolation closing position to the open position, the mechanism triggers the manual limit, and the operating handle cannot continue to rotate when it is in place. Since there is only one operating hole, there will be an unlocking device, and the grounding closing and opening operations can continue to be operated after unlocking. It is precisely because of this unlocking device that isolation closing or grounding closing is allowed when in the open position. At this time, it is easy to cause misoperation, and the isolation closing operation will be mistakenly operated as grounding closing, causing serious accidents.

[0015] 3. Small number of electrical signal location nodes

[0016] As the level of intelligence of power equipment becomes higher and higher, the number of signal nodes required is also increasing. For example, the State Grid's one-button sequential control solution requires nearly 10 open and 10 closed switches at each position. However, the micro switches can only be arranged radially on the turbine shaft through slice triggering. Adding micro switches means adding slices. If there are 10 pairs of micro switches at each position, three positions means 30 pairs of micro switches. The slice triggering micro switch method can no longer be installed and debugged. Therefore, this method will inevitably limit the number of micro switches and cannot meet the current and future requirements for intelligent equipment. Utility Model Content

[0017] The purpose of the utility model is to provide a double-operating-hole three-position isolating switch mechanism to solve the problems raised in the above-mentioned background technology.

[0018] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-operating hole three-position isolating switch mechanism, comprising a closing operation sleeve, a grounding operation sleeve, a front mounting plate, a rear mounting plate and a mounting clamp, wherein the mounting clamp is located between the front mounting plate and the rear mounting plate, the mounting clamp comprises a left mounting clamp and a right mounting clamp, and a closing microswitch group, a grounding microswitch group and an opening microswitch group are arranged above the mounting clamp, the closing operation sleeve and the grounding operation sleeve are both rotatably connected to the front mounting plate, a first spur gear is arranged on the closing operation sleeve and the grounding operation sleeve, a second spur gear is arranged between the closing operation sleeve and the grounding operation sleeve, and the first spur gear and the second spur gear are meshed with each other. The second bevel gear is meshed with the first bevel gear and the second bevel gear is meshed with the first bevel gear. The second bevel gear is meshed with the first bevel gear and the output shaft is rotated by the second bevel gear. The output shaft is driven by the second bevel gear and the second bevel gear is meshed with the first bevel gear. The output shaft is driven by the second bevel gear and the output shaft is rotated by the second bevel gear. An interlocking screw and a track interlocking plate are arranged between the left and right mounting plates. A grounding limit rotating block and a closing limit rotating block are respectively arranged near the two ends of the interlocking screw, and one end of the interlocking screw close to the closing limit rotating block is fixed to the second bevel gear. The interlocking screw is provided with a screw slider that cooperates with each other, and the screw slider is provided with a first slider pin, a second slider pin and a micro switch group pin, and a track pin is provided at the end of the second slider pin, and the output shaft drives the second bevel gear to rotate through the first bevel gear, and the second bevel gear is used to drive the interlocking screw to rotate, so that the interlocking screw can drive the screw slider to move; the track interlocking plate includes a ground split shaft limit interlocking device and a closing split shaft limit interlocking device, and the split shaft limit interlocking device and the closing split shaft limit interlocking device form a limit track, and the second slider pin is located on the inner side of the limit track, and the ground split shaft limit interlocking device and the closing split shaft limit interlocking device are fixed with a hexagonal shaft on the back, and the two ends of the hexagonal shaft are respectively hinged A limit top block is provided on the left mounting splint and the right mounting splint, and at the position of the hexagonal rotating shaft close to the right mounting splint, and a hanging spring interlocking pin is provided on the limit top block, and a tension spring is fixed on the hanging spring interlocking pin. When the screw slider moves, it will drive the second slider pin to move in the limit track. During the process, the second slider pin will change the opening and closing angles of the ground split rotating shaft limit interlocking device and the closing split rotating shaft limit interlocking device; a door interlocking plate is provided on the side of the front mounting plate close to the mounting splint, the end of the door interlocking plate is hinged on the front mounting plate, and a track arc groove is provided in the middle of the door interlocking plate, and the track pin is inserted in the track arc groove. During the movement of the screw slider, the track pin will simultaneously pull the door interlocking plate to change the angle.

[0019] Preferably, an isolation closing / splitting operating door and a grounding closing / splitting operating door corresponding to the closing operating sleeve and the grounding operating sleeve are provided on the side of the front mounting plate away from the mounting clamping plate. Both the isolation closing / splitting operating door and the grounding closing / splitting operating door are provided with through grooves, and a sliding groove corresponding to the isolation closing / splitting operating door and the grounding closing / splitting operating door is provided on the front mounting plate. The isolation closing / splitting operating door and the grounding closing / splitting operating door are used to protect the closing operating sleeve and the grounding operating sleeve. The through groove can be pulled to be parallel to the closing operating sleeve and the grounding operating sleeve for manual operation.

[0020] Preferably, the sides of the closing operation sleeve and the grounding operation sleeve are respectively provided with an isolation closing door interlock plate and a grounding closing door interlock plate, the isolation closing door interlock plate and the grounding closing door interlock plate are both provided with anti-loosening nuts near the slide slot, and the isolation closing operation door and the grounding closing operation door are provided with pressure screws near the slide slot, the isolation closing operation door and the grounding closing operation door pass through the slide slot through the pressure screws and are connected with the anti-loosening nuts of the isolation closing door interlock plate and the grounding closing door interlock plate, so that the isolation closing operation door and the grounding closing operation door are respectively fixed to the isolation closing door interlock plate and the grounding closing door interlock plate, and the through groove on the isolation closing operation door or the grounding closing operation door can be moved to the corresponding closing operation sleeve or the grounding operation sleeve by sliding the isolation closing operation door or the grounding closing operation door.

[0021] Preferably, the isolating closing door interlock plate and the grounding closing door interlock plate are respectively welded with a first welding piece and a second welding piece, and the first welding piece and the second welding piece are mainly provided to play a positioning role.

[0022] Preferably, a motor is installed on the side of the rear mounting plate, the driving shaft of the motor is connected to an output sprocket, and multiple isolating switch sprockets are evenly arranged under the rear mounting plate, the end of the isolating switch sprocket is rotatably connected to a direct-acting three-position isolating switch, an isolating switch transmission screw is arranged on the inner side of the direct-acting three-position isolating switch, the isolating switch transmission screw is connected to the isolating switch sprocket, and isolating switch moving contacts that match each other are arranged on the isolating switch transmission screw, the isolating switch moving contact is slidingly connected to the direct-acting three-position isolating switch, the output sprocket is connected to the motor sprocket and multiple isolating switch sprockets are connected by chains, and the output sprocket is connected to one of the isolating switch sprockets by a chain, and the direct-acting three-position isolating switch needs to be fixed when in use.

[0023] Preferably, the closing microswitch group, the grounding microswitch group and the opening microswitch group all include mounting columns, a microswitch group mounting plate, a microswitch body, a rocker, a mounting shaft and a trigger track plate, a plurality of microswitch bodies are evenly arranged on the inner side of the microswitch group mounting plate, a mounting column is fixed to the side of the microswitch group mounting plate, the rocker is located below the microswitch group mounting plate, a mounting shaft is fixed to the inner side of the rocker, the mounting shaft is hinged to the left mounting plate and the right mounting plate, and the trigger track plate is fixed below the rocker, wherein the mounting columns of the closing microswitch group and the grounding microswitch group are fixed to the rear mounting plate, the mounting columns of the opening microswitch group are fixed to a connecting plate, and the connecting plate is fixed to the left mounting plate and the right mounting plate.

[0024] Preferably, a grounding limit pin and a closing limit pin are symmetrically arranged on the side of the screw slider.

[0025] Preferably, the sides of the interlocking screw are provided with guide rods parallel to each other, the guide rods penetrate the screw slider, and the two ends of the guide rods are respectively fixed on the left mounting clamping plate and the right mounting clamping plate, and the guide rods are provided for guiding purpose.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] The utility model can avoid the possibility of misoperation of a single-hole mechanism and improve the ability to prevent misoperation through a double-operation-hole three-position isolating switch mechanism.

[0028] Provides a variety of locking functions for engineering applications, such as the grounding closing and opening functions of the three-position disconnector can be individually equipped with electrical locking or mechanical locking. This cannot be achieved with a single-hole operating mechanism.

[0029] The rocker device triggered by the micro switch group can provide a large number of micro switch contacts, solving the pain point of too few micro switch contacts in engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0031] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the utility model after the rear mounting plate is removed;

[0033] Figure 4 This is a schematic diagram of the structure of the direct-acting three-position isolating switch of the utility model;

[0034] Figure 5 This is a schematic diagram of the structure of the utility model without the micro switch group;

[0035] Figure 6 This is a schematic diagram of the inner structure of the installation splint of the utility model;

[0036] Figure 7 The structure of the screw slider transmission and limit interlocking device of the utility model is shown in FIG. Figure 1 ;

[0037] Figure 8 The structure of the screw slider transmission and limit interlocking device of the utility model is shown in FIG. Figure 2 ;

[0038] Fig. 9 This is a schematic diagram of the structure of the grounding position limit state of the utility model;

[0039] Fig.10 This is a schematic diagram of the structure of the closing position limit state of the utility model;

[0040] Fig.11 The schematic diagram of the interlocking device structure of the double operation holes of the utility model Figure 1 ;

[0041] Fig.12 The schematic diagram of the interlocking device structure of the double operation holes of the utility model Figure 2 ;

[0042] Fig.13 The schematic diagram of the interlocking device structure of the double operation holes of the utility model Figure 3 ;

[0043] Fig.14 This is a schematic diagram of the structure of the interlocking plate of the door in the closed position of the utility model;

[0044] Fig.15 This is a schematic diagram of the structure of the interlocking plate of the grounding position door of the utility model;

[0045] Fig.16 This is a schematic diagram of the rotating shaft limit interlocking structure of the utility model;

[0046] Fig.17 This is a schematic diagram of the structure of the opening and limiting module of the utility model;

[0047] Fig.18 This is a schematic diagram of the limit structure from the grounding position to the opening position of the utility model;

[0048] Fig.19 This is a schematic diagram of the limit structure from the closing position to the opening position of the utility model;

[0049] Fig. 20 This is a schematic diagram of the structure of the micro switch assembly device of the utility model;

[0050] Fig.21This is a schematic diagram of the structure of the seesaw device triggered by the micro switch group of the utility model;

[0051] Fig. 22 The schematic diagram of the trigger structure of the micro switch group of the utility model is shown in FIG. Figure 1 ;

[0052] Fig.23 The schematic diagram of the trigger structure of the micro switch group of the utility model is shown in FIG. Figure 2 .

[0053] In the figure: 1. Closing operation sleeve; 2. Grounding operation sleeve; 3. Second spur gear; 4. Motor; 5. Output shaft; 6. Output sprocket; 7. Drive sprocket; 8. Chain; 9. Disconnector sprocket; 10. Direct-acting three-position disconnector; 11. Disconnector drive screw; 12. Disconnector moving contact; 13. First bevel gear; 14. Second bevel gear; 15. Interlocking screw; 16. Screw slider; 17. Grounding limit rotating block; 18. Closing limit rotating block; 19. Grounding limit pin; 20. Closing limit pin; 21. First slider push pin; 22. Second slider push pin; 23. Guide rod; 24. Disconnecting closing and opening operation door; 25. Grounding closing and opening operation door; 26. Disconnecting closing and opening door interlocking plate; 27. Grounding closing and opening door interlocking plate ;28. Compression riveting screws;29. Anti-loosening nuts;30. Front mounting plate;31. First welding piece;32. Second welding piece;33. Door interlocking plate;34. Track interlocking plate;35. Hexagonal shaft;36. Limiting top block;37. Spring interlocking pin;38. Left mounting clamp;39. Right mounting clamp;40. Grounding and splitting shaft limiting interlocking device;41. Closing and splitting shaft limiting interlocking device;42. Tension spring;43. Track push pin;44. Mounting column;45. Micro switch group mounting clamp;46. Micro switch body;47. Rocker;48. Mounting shaft;49. Trigger track plate;50. Micro switch group push pin;51. Closing micro switch group;52. Grounding micro switch group;53. Opening micro switch group;54. Rear mounting plate. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0055] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0056] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] See also Figure 1-23The utility model provides a technical solution: a double-operating hole three-position isolating switch mechanism, comprising a closing operation sleeve 1, a grounding operation sleeve 2, a front mounting plate 30, a rear mounting plate 54 and a mounting clamp, wherein the mounting clamp is located between the front mounting plate 30 and the rear mounting plate 54, the mounting clamp comprises a left mounting clamp 38 and a right mounting clamp 39, and a closing micro switch group 51, a grounding micro switch group 52 and an opening micro switch group 53 are arranged above the mounting clamp; the closing operation sleeve 1 and the grounding operation sleeve 2 are both rotatably connected to the front mounting plate 30, the closing operation sleeve 1 and the grounding operation sleeve 2 are both provided with a first spur gear, a second spur gear 3 is arranged between the closing operation sleeve 1 and the grounding operation sleeve 2, and the first spur gear is connected to the grounding operation sleeve 2. The second spur gears 3 are meshed with each other, an output shaft 5 is fixed on the second spur gear 3, the end of the output shaft 5 passes through the rear mounting plate 54 and is connected to the output sprocket 6, a first bevel gear 13 is fixed near the middle of the output shaft 5, a second bevel gear 14 is arranged on the side of the left mounting clamp plate 38, the second bevel gear 14 is meshed with the first bevel gear 13, by rotating the closing operation sleeve 1 or the grounding operation sleeve 2, the second bevel gear 14 is driven to rotate by the closing operation sleeve 1 or the grounding operation sleeve 2, so that the second bevel gear 14 can drive the output shaft 5 to rotate; an interlocking screw 15 and a track interlocking plate 34 are arranged between the left mounting clamp plate 38 and the right mounting clamp plate 39, and the interlocking screw 15 is respectively provided with a grounding limit screw near both ends. The output shaft 5 drives the second bevel gear 14 to rotate through the first bevel gear 13, and the second bevel gear 14 drives the interlocking screw 15 to rotate by using the second bevel gear 14 to drive the screw slider 16 to move; the track interlocking plate 34 includes a ground split shaft limit interlocking device 40 and a closing split shaft limit interlocking device 41, and the split shaft limit interlocking device and the closing split shaft limit interlocking device are interlocked. The split shaft limit interlocking device 41 forms a limit track, and the second slider pin 22 is located inside the limit track. The split shaft limit interlocking device 40 and the split shaft limit interlocking device 41 are both fixed with a hexagonal shaft 35 on their backs. The two ends of the hexagonal shaft 35 are respectively hinged on the left mounting clamping plate 38 and the right mounting clamping plate 39, and the hexagonal shaft 35 is provided with a limit top block 36 near the right mounting clamping plate 39. The limit top block 36 is provided with a hanging spring interlocking pin 37, and a tension spring 42 is fixed on the hanging spring interlocking pin 37. When the screw slider 16 moves, it will drive the second slider pin 22 to move in the limit track. During the process, the second slider pin 22 will change the opening and closing angles of the split shaft limit interlocking device 40 and the split shaft limit interlocking device 41.A door interlock plate 33 is provided on one side of the front mounting plate 30 near the mounting clamping plate. The end of the door interlock plate 33 is hinged on the front mounting plate 30, and a track arc groove is provided in the middle of the door interlock plate 33. The track pin 43 is inserted in the track arc groove. During the movement of the screw slider 16, the track pin 43 will simultaneously pull the door interlock plate 33 to change its angle. ;

[0058] Furthermore, the side of the front mounting plate 30 away from the mounting clamping plate is provided with an isolation closing and opening operating door 24 and a grounding closing and opening operating door 25 corresponding to the closing operating sleeve 1 and the grounding operating sleeve 2. The isolation closing and opening operating door 24 and the grounding closing and opening operating door 25 are both provided with through grooves, and the front mounting plate 30 is provided with sliding grooves corresponding to the isolation closing and opening operating door 24 and the grounding closing and opening operating door 25. The isolation closing and opening operating door 24 and the grounding closing and opening operating door 25 are used to protect the closing operating sleeve 1 and the grounding operating sleeve 2. The through groove can be pulled to be parallel to the closing operating sleeve 1 and the grounding operating sleeve 2 for manual operation.

[0059] Furthermore, the sides of the closing operation shaft sleeve 1 and the grounding operation shaft sleeve 2 are respectively provided with an isolation closing door interlocking plate 26 and a grounding closing door interlocking plate 27. The isolation closing door interlocking plate 26 and the grounding closing door interlocking plate 27 are both provided with anti-loosening nuts 29 near the slide slot. The isolation closing and opening operation door 24 and the grounding closing and opening operation door 25 are provided with pressure screws 28 near the slide slot. The isolation closing and opening operation door 24 and the grounding closing and opening operation door 25 pass through the slide slot and are It is connected to the anti-loosening nut 29 of the isolation closing door interlock plate 26 and the grounding closing door interlock plate 27, so as to fix the isolation closing door 24 and the grounding closing door interlock plate 27 respectively, and move the through groove on the isolation closing door 24 or the grounding closing door 25 to the corresponding closing operation shaft sleeve 1 or the grounding operation shaft sleeve 2 by sliding the isolation closing door 24 or the grounding closing door 25.

[0060] Furthermore, the isolation closing door interlock plate 26 and the grounding closing door interlock plate 27 are respectively welded with a first welding piece 31 and a second welding piece 32, and the first welding piece 31 and the second welding piece 32 are mainly provided for positioning.

[0061] Furthermore, a motor 4 is installed on the side of the rear mounting plate 54, and the driving shaft of the motor 4 is connected to the driving sprocket 7. A plurality of isolating switch sprockets 9 are evenly arranged below the rear mounting plate 54. The end of the isolating switch sprocket 9 is rotatably connected to a direct-acting three-station isolating switch 10. An isolating switch transmission screw 11 is arranged on the inner side of the direct-acting three-station isolating switch 10. The isolating switch transmission screw 11 is connected to the isolating switch sprocket 9, and the isolating switch transmission screw 11 is provided with isolating switch moving contacts 12 that are adapted to each other. The isolating switch moving contacts 12 are slidingly connected to the direct-acting three-station isolating switch 10. The output sprocket 6 and the driving sprocket 7, and the plurality of isolating switch sprockets 9 are connected by chains 8, and the output sprocket 6 and one of the isolating switch sprockets 9 are connected by chains 8. The direct-acting three-station isolating switch 10 needs to be fixed when in use.

[0062] Furthermore, the closing micro switch group 51, the grounding micro switch group 52 and the opening micro switch group 53 all include a mounting column 44, a micro switch group mounting clamp 45, a micro switch body 46, a rocker 47, a mounting shaft 48 and a trigger track plate 49, a plurality of micro switch bodies 46 are evenly arranged on the inner side of the micro switch group mounting clamp 45, a mounting column 44 is fixed on the side of the micro switch group mounting clamp 45, and the rocker 47 is located at the micro switch group mounting clamp 45. Below the mounting plate 45, a mounting shaft 48 is fixed on the inner side of the rocker 47, and the mounting shaft 48 is hinged on the left mounting plate 38 and the right mounting plate 39. The trigger track plate 49 is fixed below the rocker 47, wherein the mounting columns 44 of the closing microswitch group 51 and the grounding microswitch group 52 are fixed on the rear mounting plate 54, and the mounting columns 44 of the opening microswitch group 53 are fixed with a connecting plate, which is fixed to the left mounting plate 38 and the right mounting plate 39.

[0063] Furthermore, a grounding limit pin 19 and a closing limit pin 20 are symmetrically arranged on the side of the screw slider 16 .

[0064] Furthermore, the interlocking screw 15 is provided with mutually parallel guide rods 23 on its side, the guide rod 23 passes through the screw slider 16, and both ends of the guide rod 23 are respectively fixed on the left mounting clamping plate 38 and the right mounting clamping plate 39, and the guide rod 23 is provided for guiding.

[0065] Working principle: In the present invention, the handle is inserted into or operated through the closing operation sleeve 1 or the grounding operation sleeve 2 according to the operation requirements, and rotated clockwise or counterclockwise, and the first spur gear on the sleeve cooperates with the second spur gear 3, and is transmitted to the output shaft 5. The output sprocket 6 is installed on the output shaft 5, and is transmitted to the isolating switch sprocket 9 through the chain. The isolating switch sprocket 9 drives the isolating switch screw to rotate clockwise or counterclockwise, and pushes the isolating switch moving contact 12 forward or backward to achieve the closing, opening, and grounding of the three-position isolating switch. When electric, it depends on the forward and reverse rotation of the motor 4, which is transmitted to the output sprocket 6 through the drive sprocket 7, and the subsequent transmission is consistent with manual. The interlocking route transmission is through the first bevel gear and the second bevel gear on the output shaft 5 to the interlocking screw 15, and the screw slider 16 installed on the interlocking screw 15. The rotation of the interlocking screw 15 is synchronized with the rotation of the isolating switch screw. The screw slider 16 moves left and right with the rotation of the interlocking screw 15, and its displacement is proportional to the stroke of the isolating switch. When the interlocking screw 15 rotates, the screw slider 16 can only do left and right reciprocating motion under the restriction of the guide rod 23. The grounding limit interlocking rotating block and the closing limit interlocking rotating block are fixed at the left and right ends of the interlocking screw 15 respectively. When the screw slider 16 moves to the corresponding isolating switch closing position, the limit rotating block will interfere with the closing limit pin 20, so that the interlocking screw 15 is limited and cannot continue to rotate in this direction. At the same time, the interlocking screw 15 feeds back the limiting force to the output shaft 5 through the second bevel gear 14 and the first bevel gear 13. The restricted output shaft 5 then feeds back to the isolation closing and opening operating sleeve and the grounding closing and opening operating sleeve. The manual operation in this direction is limited, realizing the function of manual operation of isolation closing as limit protection. The same is true for grounding closing. When the electrically operated disconnector is closed or grounded, if the micro switch contact fails, the motor 4 continues to rotate, the output shaft 5 and the interlocking screw 15 continue to rotate in the same direction, and as the limit rotation block contacts the limit pin, the interlocking screw 15 stops rotating, the output shaft 5 stops rotating, the motor 4 is blocked, the current increases, and the circuit breaker trips, thereby protecting the disconnector from damage.

[0066] The interlocking logic is as follows: when the isolating switch is in the isolation closed position or the middle position between the isolation closed and the open position, only the isolation closed and the open operating door 24 can be opened, and the grounding closed and the open operating door 25 is locked and cannot be opened; when the isolating switch is in the open position, both the isolation closed and the open operating door 24 and the grounding closed and the open operating door 25 can be opened; when the grounding switch is in the grounding closed position or the middle position between the grounding closed and the open position, only the grounding closed and the open operating door 25 can be opened, and the isolation closed and the open operating door 24 is locked and cannot be opened.

[0067] The isolation closing and separation operating door 24 and the grounding closing and separation operating door 25 are connected to the isolation closing and separation door interlocking plate 26 and the grounding closing and separation door interlocking plate 27 respectively through the rivet screws 28, and locked with the anti-loosening nut 29. When the isolation closing and separation operating door 24 or the grounding closing and separation operating door 25 is moved, the whole set of door panels and door interlocking plates slide to the left in the sliding groove of the front mounting plate 30, exposing the isolation closing and separation operating shaft sleeve or the grounding closing and separation operating shaft sleeve, and then the operating handle is inserted for operation according to the needs.

[0068] This interlocking plate has a track arc groove and an end bend, and the track pin 43 on the screw slider 16 is inserted into the track arc groove. When the three-position switch is in the isolation closing and opening area, the second slider pin 22 on the screw slider 16 moves in the track arc groove to rotate and offset the door interlocking interlocking plate 33 downward, and the lower end protruding part of the bent end of the interlocking plate blocks the moving path of the second welding part 32, which is welded to the ground closing and opening door interlocking by spot welding. Therefore, blocking the second welding part 32 limits the movement of the ground closing and opening operating door 25, and when the three-position mechanism is manually operated in the isolation closing and opening state, the ground closing and opening operating door 25 is locked to prevent misoperation.

[0069] When the three-position switch is operated to the open position, that is, the screw slider 16 is in the middle position, the second slider pin 22 on the screw slider 16 is exactly in the middle position in the track arc groove. According to the pre-designed track arc groove, this position just makes the door interlocking interlock plate 33 in the middle position, and the upper and lower ends of the interlocking plate are bent in the middle of the upper and lower welded parts, and the isolation closing and opening operating door 24 and the grounding closing and opening operating door 25 can both be opened.

[0070] When the three-position switch is in the grounding and closing area, the second slider pin 22 on the screw slider 16 moves in the trajectory arc groove to rotate the door interlock plate 33 upward, and the upper protruding part of the bent end of the interlock plate blocks the movement path of the second welding part 32, thereby limiting the movement of the isolation and closing operating door 24. When the three-position mechanism is manually operated to the grounding and closing state, the isolation and closing operating door 24 is locked to prevent misoperation.

[0071] The three-position mechanism operates the switch from the isolation position or the grounding position. When it reaches the open position, in addition to the instructions on the sign, the mechanism needs to have clear mechanical limits to prevent the operator from making mistakes. The specific implementation method is as follows:

[0072] The trajectory interlocking plate 34 designed according to the stroke is fixed to the hexagonal shaft 35 by bolts, and the limit top block 36 is fixed to the hexagonal shaft 35 by elastic pins, and a spring interlocking pin 37 with a hanging tension spring 42 is installed on the limit top block 36.

[0073] The opening limit module combines the ground opening shaft limit interlocking device 40, the closing shaft limit interlocking device 41, the screw drive module and the tension spring 42 into a linkage module through the left and right mounting clamps 39. When the track pin 43 moves left and right with the screw, the ground opening and closing shaft limit interlocking devices 41 will be lifted or retracted according to the height of the track line, so that the limit top block 36 can swing at an angle within a specified range of travel.

[0074] When the isolating switch is operated from the grounding position to the opening position, the screw on the mechanism rotates clockwise, and the grounding limit rotating block 17 also rotates clockwise. When the track pin 43 moves past the middle, the grounding and opening rotating shaft limit interlocking device 40 will be retracted as the track line becomes lower, and the limit top block 36 will also swing inward with the interlocking device. The grounding limit rotating block 17 will be limited by the retracted top block, realizing the mechanical limit from the three-position grounding position to the opening position.

[0075] Similarly, when the isolating switch is operated from the closing position to the opening position, the screw on the mechanism rotates counterclockwise, and the grounding limit rotating block 17 also rotates counterclockwise. When the track pin 43 moves past the middle, the closing and opening shaft limit interlocking device 41 will be retracted as the track line becomes lower, and the limit top block 36 will also swing inward with the interlocking device. The grounding limit rotating block 17 will be limited by the retracted limit top block 36, realizing the mechanical limit from the three-position closing position to the opening position.

[0076] When the micro switch group pin 50 on the lead screw slider 16 moves with the lead screw slider 16, the micro switch group pin 50 contacts the trigger track mounting plate on the movement path, causing the seesaw to rotate around the axis, and the lifted seesaw 47 triggers all the micro switches on the micro switch group, and the electrical signal output is completed.

[0077] On the moving path of the microswitch group pin 50, a closing microswitch group, a grounding microswitch group and an opening microswitch release group are respectively arranged. According to the same triggering method, the mechanism can be in the closing, opening and grounding positions to trigger the microswitch groups at the corresponding positions to realize the output of a full set of electrical signals.

[0078] It is worth noting that the entire device is controlled by a main control button. Since the device matched with the control button is a common device and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0079] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-position isolating switch mechanism with double operating holes, characterized in that: The invention comprises a closing operation shaft sleeve (1), a grounding operation shaft sleeve (2), a front mounting plate (30), a rear mounting plate (54) and a mounting clamping plate, wherein the mounting clamping plate is located between the front mounting plate (30) and the rear mounting plate (54), the mounting clamping plate comprises a left mounting clamping plate (38) and a right mounting clamping plate (39), and a closing micro switch group (51), a grounding micro switch group (52) and an opening micro switch group (53) are arranged above the mounting clamping plate; the closing operation shaft sleeve (1) and the grounding operation shaft sleeve (2) are both rotatably connected to the front mounting plate (30), and the closing operation shaft sleeve (1) and the grounding operation shaft sleeve (2) are rotatably connected to the front mounting plate (30). A first spur gear is arranged on each sleeve (2), a second spur gear (3) is arranged between the closing operation sleeve (1) and the grounding operation sleeve (2), the first spur gear and the second spur gear (3) are meshed with each other, an output shaft (5) is fixed on the second spur gear (3), the end of the output shaft (5) passes through the rear mounting plate (54) and is connected to the output sprocket (6), a first bevel gear (13) is fixed near the middle of the output shaft (5), a second bevel gear (14) is arranged on the side of the left mounting clamping plate (38), and the second bevel gear (14) and the first bevel gear (13) are meshed with each other; An interlocking screw (15) and a track interlocking plate (34) are arranged between the left mounting clamping plate (38) and the right mounting clamping plate (39); a grounding limit rotating block (17) and a closing limit rotating block (18) are respectively arranged near the two ends of the interlocking screw (15); and one end of the interlocking screw (15) near the closing limit rotating block (18) is fixed to the second bevel gear (14); a screw slider (16) that cooperates with each other is arranged on the interlocking screw (15); a first slider pin (21), a second slider pin (22) and a micro switch group pin (50) are arranged on the screw slider (16); and a track pin (43) is arranged at the end of the second slider pin (22); The track interlocking plate (34) comprises a ground split shaft limiting interlocking device (40) and a closing split shaft limiting interlocking device (41), the split shaft limiting interlocking device and the closing split shaft limiting interlocking device (41) form a limiting track, the second slider pin (22) is located inside the limiting track, the ground split shaft limiting interlocking device (40) and the closing split shaft limiting interlocking device (41) are both fixed with a hexagonal shaft (35) on their backs, the two ends of the hexagonal shaft (35) are respectively hinged on the left mounting clamping plate (38) and the right mounting clamping plate (39), and a limiting top block (36) is provided at a position of the hexagonal shaft (35) close to the right mounting clamping plate (39), a hanging spring interlocking pin (37) is provided on the limiting top block (36), and a tension spring (42) is fixed on the hanging spring interlocking pin (37); A door interlocking plate (33) is provided on one side of the front mounting plate (30) close to the mounting clamping plate. The end of the door interlocking plate (33) is hinged on the front mounting plate (30). A track arc groove is provided in the middle of the door interlocking plate (33). A track pin (43) is inserted in the track arc groove.

2. A double-operating-hole three-position isolating switch mechanism according to claim 1, characterized in that: An isolation closing / opening operating door (24) and a grounding closing / opening operating door (25) corresponding to the closing operating shaft sleeve (1) and the grounding closing / opening operating shaft sleeve (2) are provided on the side of the front mounting plate (30) away from the mounting clamping plate. Through grooves are provided on the isolation closing / opening operating door (24) and the grounding closing / opening operating door (25), and sliding grooves corresponding to the isolation closing / opening operating door (24) and the grounding closing / opening operating door (25) are provided on the front mounting plate (30).

3. A double-operating-hole three-position isolating switch mechanism according to claim 1, characterized in that: The sides of the closing operation shaft sleeve (1) and the grounding operation shaft sleeve (2) are respectively provided with an isolation closing door interlocking plate (26) and a grounding closing door interlocking plate (27); the isolation closing door interlocking plate (26) and the grounding closing door interlocking plate (27) are provided with anti-loosening nuts (29) near the slide slot; the isolation closing door (24) and the grounding closing door (25) are provided with pressure screws (28) near the slide slot; the isolation closing door (24) and the grounding closing door (25) pass through the slide slot and are connected to the anti-loosening nuts (29) of the isolation closing door interlocking plate (26) and the grounding closing door interlocking plate (27) through the pressure screws (28).

4. A double-operating-hole three-position isolating switch mechanism according to claim 3, characterized in that: A first welding piece (31) and a second welding piece (32) are respectively welded to the isolating closing door interlock plate (26) and the grounding closing door interlock plate (27).

5. A double-operating-hole three-position isolating switch mechanism according to claim 1, characterized in that: A motor (4) is installed on the side of the rear mounting plate (54), and the driving shaft of the motor (4) is connected to a driving sprocket (7). A plurality of isolating switch sprockets (9) are evenly arranged below the rear mounting plate (54). The end of the isolating switch sprocket (9) is rotatably connected to a direct-acting three-station isolating switch (10). An isolating switch transmission screw (11) is arranged inside the direct-acting three-station isolating switch (10). The isolating switch transmission screw (11) is connected to the isolating switch sprocket (9), and isolating switch transmission screw (11) is provided with mutually adapted isolating switch moving contacts (12). The isolating switch moving contacts (12) are slidably connected to the direct-acting three-station isolating switch (10). The output sprocket (6) is connected to the driving sprocket (7) and the plurality of isolating switch sprockets (9) are connected by chains (8), and the output sprocket (6) is connected to one of the isolating switch sprockets (9) by a chain (8).

6. A double-operating-hole three-position isolating switch mechanism according to claim 1, characterized in that: The closing micro switch group (51), the grounding micro switch group (52) and the opening micro switch group (53) all include a mounting column (44), a micro switch group mounting clamp (45), a micro switch body (46), a seesaw (47), a mounting shaft (48) and a trigger track plate (49), a plurality of micro switch bodies (46) are evenly arranged on the inner side of the micro switch group mounting clamp (45), a mounting column (44) is fixed on the side of the micro switch group mounting clamp (45), and the seesaw (47) is located on the micro switch group mounting clamp (45). 45), a mounting shaft (48) is fixed on the inner side of the seesaw (47), the mounting shaft (48) is hinged on the left mounting clamp (38) and the right mounting clamp (39), a trigger track plate (49) is fixed below the seesaw (47), wherein the mounting columns (44) of the closing micro switch group (51) and the grounding micro switch group (52) are fixed on the rear mounting plate (54), and the mounting columns (44) of the opening micro switch group (53) are fixed with a connecting plate, and the connecting plate is fixed to the left mounting clamp (38) and the right mounting clamp (39).

7. A double-operating-hole three-position isolating switch mechanism according to claim 1, characterized in that: A grounding limit pin (19) and a closing limit pin (20) are symmetrically arranged on the side of the screw slider (16).

8. The double-operating-hole three-position isolating switch mechanism according to claim 1, characterized in that: The interlocking screw rod (15) is provided with a guide rod (23) parallel to each other on the side, the guide rod (23) passes through the screw rod slider (16), and the two ends of the guide rod (23) are respectively fixed on the left mounting clamping plate (38) and the right mounting clamping plate (39).

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