CN219658603U - Spacing protection device of isolator divide-shut brake - Google Patents
Spacing protection device of isolator divide-shut brake Download PDFInfo
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- CN219658603U CN219658603U CN202320903695.9U CN202320903695U CN219658603U CN 219658603 U CN219658603 U CN 219658603U CN 202320903695 U CN202320903695 U CN 202320903695U CN 219658603 U CN219658603 U CN 219658603U
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- 230000003068 static effect Effects 0.000 claims description 24
- 230000001012 protector Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an isolating switch opening and closing limit protection device which comprises a disconnecting link assembly, a first fixed contact seat, a second fixed contact seat, a rotating shaft, a limit crank arm, a rotating crank arm, a closing limit cylinder, an opening limit cylinder and an insulating pull rod, wherein the first fixed contact seat, the second fixed contact seat, the rotating shaft, the limit crank arm, the rotating crank arm and the insulating pull rod are fixed on the rotating shaft at fixed angles, the rotating shaft is connected with the disconnecting link assembly through the insulating pull rod, the rotating shaft is driven to rotate through the insulating pull rod when the disconnecting link assembly rotates around the second fixed contact seat to close or open a switch, and the limit crank arm is limited, so that the problem that the service life of an isolating switch is influenced by the fact that the disconnecting link assembly is easy to strike the contact assembly in the prior art is solved, and the reliability of the isolating switch is greatly improved.
Description
Technical Field
The utility model relates to the technical field of isolating switches, in particular to an isolating switch opening and closing limit protection device.
Background
The isolating switch is a switching device which is mainly used for isolating a power supply, switching operation and switching on and off a small current circuit and has no arc extinguishing function. The isolating switch is arranged at the opening position, and the insulation distance between the contacts meets the specified requirement; in the closed position, the switching device is capable of carrying a current under normal loop conditions and a current under abnormal conditions such as short-circuiting for a prescribed time. Therefore, it is important to ensure that the isolating switch is reliably opened and closed.
The existing disconnecting switch opening and closing limiting scheme has the advantages that some electric disconnecting switches pass through an in-place travel switch, and when the disconnecting switches are opened and closed in place, a motor control loop is cut off through the travel switch, so that the disconnecting link is stopped, but the limiting mode is not reliable in mechanical limiting. Due to the influence of inertia, the disconnecting link can also act for a distance, if the distance is unreasonable in design and long-term in use, the distance deviation is caused or the in-place travel switch fails, the disconnecting link component impacts the contact component, and the service life of the disconnecting link is influenced.
According to the scheme of the isolating switch, the fact that no effective protection device for preventing impact and vibration exists at the opening position is considered, so that in the lightweight impact and vibration test process, the moving contact is easy to damage and other adverse factors are caused, and only the opening limiting is designed. The patent document with the publication number of CN207116305U discloses a limit protection device for the opening position of an isolating switch, which comprises a base, a front fixed contact assembly and a rear fixed contact assembly, wherein the front fixed contact assembly is rotatably connected with a moving contact assembly, a protection device for limiting the movement of the moving contact assembly is arranged above the moving contact assembly at the opening position, and the protection device comprises a left protection plate and a right protection plate which are symmetrically arranged on two sides of the base, and a top protection plate positioned between the left protection plate and the right protection plate. The protection device effectively limits and protects the moving contact assembly when the opening is in place through the left protective plate, the right protective plate and the top protective plate, and avoids the phenomena that the opening is unprotected, the moving contact is opened, and the like due to the working failure of the secondary wiring travel switch. This scheme is through spacing protection device to the brake position, but considers the not good enough to the brake-on spacing, and the brake-on position does not have the spacing protection of design, and spacing position can not adjust moreover, causes isolator at the brake-on in-process, leads to the knife switch subassembly to lead to the fact adverse effect to isolator's life owing to inertial impact contact subassembly, and the spacing protection device of this scheme is fixed, can't manual regulation, because part machining error can't avoid, can lead to spacing protection device efficiency difference.
Disclosure of Invention
Aiming at the problems that a disconnecting link assembly is easy to strike a contact assembly in the prior art, so that the service life of the disconnecting switch is influenced, and a limiting part cannot be manually adjusted, the utility model provides a disconnecting switch opening and closing limiting protection device, and solves the problems.
In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a spacing protection device of isolator divide-shut brake, includes switch subassembly and fixes the first, the second of static contact seat on the frame, but switch subassembly one end rotatable mounting is on the second of static contact seat, but the other end rotation back with first block of static contact seat in the closing position, still include axis of rotation, spacing turning arm, rotation turning arm, the spacing cylinder of closing a floodgate, spacing cylinder of separating brake and insulating pull rod, the spacing cylinder of closing a floodgate is also fixed on the frame, the axis of rotation passes the frame perpendicularly and is rotated around self axle by manual or electric drive, spacing turning arm, rotation turning arm separate fixed angle one end radial fixed mounting in the axis of rotation, but insulating pull rod one end swivelling joint is in switch subassembly middle part, but other end swivelling joint is in the tip of rotation axis far away from the turning arm, the switch subassembly drives the axis of rotation through insulating pull rod when two rotations of static contact seat are closed a floodgate or separating brake, spacing cylinder of closing a floodgate is put in spacing arm both sides, thereby carry out spacing to the spacing turning arm of closing a floodgate when the axis of rotation and carry out spacing to the spacing turning arm and limit the switch subassembly.
Preferably, the limit crank arm is welded on the rotating shaft in the radial direction.
Preferably, the rotating crank arm is welded on the rotating shaft in a radial direction.
Preferably, the three-dimensional disconnecting link further comprises a third static contact seat which is also fixed on the frame, and when the limiting crank arm rotates to the disconnecting limit cylinder, the distal shaft end of the disconnecting link assembly is clamped with the third static contact seat.
Preferably, the first fixed contact seat, the second fixed contact seat and the third fixed contact seat are fixed on the frame by screws.
Preferably, one end of the knife switch assembly is arranged on the second static contact seat through a pin shaft, and the knife switch assembly can rotate around the pin shaft.
Preferably, one end of the insulating pull rod is arranged in the middle of the disconnecting link assembly through a locating pin, and the other end of the insulating pull rod is arranged at the end part of the rotating crank arm far from the rotating shaft through the locating pin.
Preferably, the limiting crank arm and the rotating crank arm are axially arranged at a fixed position on the rotating shaft in a spaced mode.
Preferably, the closing limiting cylinder and the opening limiting cylinder are fixed on the frame through screws.
Preferably, the screw fixing locating holes of the closing limiting cylinder and the opening limiting cylinder are eccentric holes and are not arranged on the central shaft of the cylinder.
According to the disconnecting switch opening and closing limiting protection device, the connecting rod is connected to the steering shaft through the mounting structures such as the screw and the pin, and the welding structure of the crank arm, so that the disconnecting switch opening and closing limiting protection device which is simple in structure, convenient to mount and high in reliability is provided for the disconnecting switch, the convenience in mounting of the static contact seat, the closing limiting cylinder and the opening limiting cylinder is improved, the strength of connecting the crank arm to the steering shaft is improved, and the opening and closing positions can be accurately adjusted; when the switch is electrically controlled to be opened or closed in place, the knife switch assembly is prevented from striking the contact assembly due to inertia; when the electrical control loop is cut off and fails, the non-protection of opening and closing can be avoided, and problems occur; through spacing crank and rotation crank axial stagger arrangement on the axis of rotation, improved the flexibility ratio that two spacing cylinders arranged, prevent spacing cylinder and steering crank or insulating pull rod interference. In summary, the isolating switch opening and closing limit protection device provided by the scheme greatly improves the reliability of the isolating switch, and compared with other schemes, only electrical limit is considered, the isolating switch opening and closing limit protection device can be used for increasing mechanical limit on the basis of electrical limit, and improves the reliability of opening and closing limit of the isolating switch; compared with other devices, only the brake-separating limit is considered, the utility model has limit protection at both the brake-separating and brake-closing positions, and the service lives of the knife brake component and the contact component are prolonged; meanwhile, the utility model adopts two eccentric cylinders for limiting, so that the opening and closing limiting positions can be manually adjusted, and different limiting requirements can be met.
Drawings
FIG. 1 is a front view of a split and combined protection device;
FIG. 2 is a perspective view of the split and combined protection device;
wherein, the three parts of the 1-static contact seat, the 2-knife switch component, the two parts of the 3-static contact seat, the 4-frame, the 5-rotating shaft and the 501-limit crank arm, 502-rotating crank arm, 6-closing limit cylinder, 7-opening limit cylinder, 8-static contact seat I and 9-insulating pull rod.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
The embodiment provides a technical scheme that: the technical scheme includes that the knife switch assembly 2, the rotating shaft 5, the limiting crank arm 501, the rotating crank arm 502, the closing limiting cylinder 6, the opening limiting cylinder 7, the insulating pull rod 9, a first static contact seat 8, a second static contact seat 3 and a third static contact seat 1 which are fixed on a frame 4, wherein the first static contact seat 8, the second static contact seat 3 and the third static contact seat 1 are fixed on the frame 4 through screws, one end of the knife switch assembly 2 is rotatably arranged on the second static contact seat 3, the other end of the knife switch assembly 2 can be clamped with the first static contact seat 8 in a closing position after rotating, one end of the knife switch assembly 2 is arranged on the second static contact seat 3 through a pin shaft, clamping springs are used at two ends of the pin shaft, the knife switch assembly 2 can rotate around the pin shaft, the installation operation is simple and convenient, other modes can be used, such as a cylindrical boss and the like are machined at the pin shaft position; the closing limit cylinder 6 and the opening limit cylinder 7 are also fixed on the frame 4, the rotating shaft 5 vertically penetrates through the frame and is driven by manual or electric force to rotate around the self shaft, one ends of the limit crank arm 501 and the rotating crank arm 502, which are separated by a fixed angle, are radially and fixedly arranged on the rotating shaft 5, in the embodiment, the limit crank arm 501 and the rotating crank arm 502 are radially fixed on the rotating shaft 5 in a welding mode, so that the two are firmer, the fixed positions of the two on the rotating shaft 5 are also arranged at intervals along the axial direction, the limit crank arm 501 is closer to the frame 4, the rotating crank arm 502 is farther away from the frame, and interference with other elements in the moving process can be prevented; one end of the insulating pull rod 9 is rotatably connected to the middle part of the disconnecting link assembly 2, and the other end of the insulating pull rod is rotatably connected to the end part of the rotating crank arm 502 far away from the rotating shaft 5, and the insulating pull rod and the rotating crank arm are connected by using a positioning pin in the embodiment, so that the disconnecting link is more convenient; the disconnecting link assembly 2 rotates around the fixed contact seat II 3 to switch on or switch off, the insulating pull rod 9 drives the rotating shaft 5 to rotate, the switch-on limiting cylinder 6 and the switch-off limiting cylinder 7 are respectively arranged on two sides of the limiting crank arm 501, the limiting crank arm 501 is limited when the rotating shaft 5 rotates, the switch-on and switch-off of the disconnecting link assembly 2 are limited, in the embodiment, the switch-on limiting cylinder 6 and the switch-off limiting cylinder 7 are fixed on the frame 4 through screws, the fixed screws are fixed and are not positioned on the central shaft of the limiting cylinder, an eccentric arrangement method is adopted, the switch-on limiting position can be adjusted by the rotation angle after the screws are unscrewed when the manual limit cylinder is needed, so that the distance between the disconnecting link assembly 2 and the fixed contact seat III 1 and the fixed contact seat I8 is guaranteed, damage caused by direct collision is avoided, the adjustment mode is very flexible, the height of the two limiting crank arms 501 is larger than the distance between the inner side of the insulating pull rod 9 of the rotating arm 502 and the end face of the locating pin to the frame, and the distance between the rotating crank arm 502 and the two limiting crank arms 501 can be guaranteed, and the two limiting crank arms 502 do not interfere in the movement process.
The static contact seat three 1 fixed on the frame 4 can enable the isolating switch to be suitable for application selection of different scenes of two lines, achieves the effect similar to a three-station switch, and enables the limit crank arm 501 to rotate to the opening limit cylinder 7 when the limit cylinder is arranged, and the far shaft end of the disconnecting link assembly 2 is clamped with the static contact seat three 1.
The switch is switched on, the rotating shaft 5 rotates anticlockwise under the drive of a motor or a manual drive, the knife switch assembly 2 is driven to act through the rotating crank arm 502 on the rotating shaft 5, and when the limit crank arm 501 welded on the rotating shaft 5 touches the switching-on limit cylinder 6 to stop, the switch is in a switching-on position.
The switch is opened, the rotating shaft 5 rotates clockwise under the drive of a motor or a manual drive, the knife switch assembly 2 is driven to act through the rotating crank arm 502 on the rotating shaft 5, and when the limit crank arm 501 welded on the rotating shaft 5 touches the opening limit cylinder 7 to stop, the switch is in the opening position.
In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (10)
1. The utility model provides a spacing protection device of isolator divide-shut brake, includes switch subassembly (2) and fixes static contact seat one (8), static contact seat two (3) on frame (4), but switch subassembly (2) one end rotation mounting is on static contact seat two (3), but the other end rotation back with static contact seat one (8) block in closing position, its characterized in that: still include axis of rotation (5), spacing turning arm (501), rotation turning arm (502), closing a floodgate spacing cylinder (6), separating brake spacing cylinder (7) and insulating pull rod (9), closing a floodgate spacing cylinder (6) and separating brake spacing cylinder (7) also fix on frame (4), axis of rotation (5) pass the frame perpendicularly and rotate around self axle by manual or electric drive, spacing turning arm (501), rotation turning arm (502) separate fixed angle one end radial fixed mounting on axis of rotation (5), but insulating pull rod (9) one end swivelling joint is in knife switch subassembly (2) middle part, but other end swivelling joint is in the tip of rotating turning arm (502) far axis of rotation (5), knife switch subassembly (2) are rotated and are closed a floodgate or are separated the brake through insulating pull rod (9) when driving axis of rotation (5) around stationary contact seat two (3), thereby closing a floodgate spacing cylinder (6) and separating brake spacing cylinder (7) are separated and are put in spacing turning arm (501) both sides, carry out spacing to limit the closing a floodgate (2) when axis of rotation (5) rotate.
2. The isolating switch opening and closing limit protection device according to claim 1, wherein: the limiting crank arm (501) is welded on the rotating shaft (5) in the radial direction.
3. The isolating switch opening and closing limit protection device according to claim 1, wherein: the rotating crank arm (502) is radially welded on the rotating shaft (5).
4. The isolating switch opening and closing limit protection device according to claim 1, wherein: still include still that also fix on frame (4) quiet contact seat three (1), when spacing turning arm (501) rotate to separating brake spacing cylinder (7), the distal end of switch subassembly (2) and quiet contact seat three (1) block.
5. The isolating switch opening and closing limit protection device according to claim 4, wherein: the first fixed contact seat (8), the second fixed contact seat (3) and the third fixed contact seat (1) are fixed on the frame (4) through screws.
6. The isolating switch opening and closing limit protection device according to claim 1, wherein: one end of the knife switch assembly (2) is arranged on the static contact seat (3) through a pin shaft, and the knife switch assembly (2) can rotate around the pin shaft.
7. The isolating switch opening and closing limit protection device according to claim 1, wherein: one end of the insulating pull rod (9) is arranged in the middle of the disconnecting link assembly (2) through a locating pin, and the other end of the insulating pull rod is arranged at the end part of the rotating crank arm (502) far away from the rotating shaft (5) through a locating pin.
8. The isolating switch opening and closing limit protection device according to claim 1, wherein: the limiting crank arm (501) and the rotating crank arm (502) are axially arranged at fixed positions on the rotating shaft (5) in a spaced mode.
9. The isolating switch opening and closing limit protection device as claimed in claim 8, wherein: the closing limiting cylinder (6) and the opening limiting cylinder (7) are fixed on the frame (4) through screws.
10. An isolating switch opening and closing limit protector according to any one of claims 1-9, characterized in that: the screw fixing locating holes of the closing limiting cylinder (6) and the opening limiting cylinder (7) are eccentric holes and are not arranged on the central shaft of the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320903695.9U CN219658603U (en) | 2023-04-21 | 2023-04-21 | Spacing protection device of isolator divide-shut brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320903695.9U CN219658603U (en) | 2023-04-21 | 2023-04-21 | Spacing protection device of isolator divide-shut brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219658603U true CN219658603U (en) | 2023-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320903695.9U Active CN219658603U (en) | 2023-04-21 | 2023-04-21 | Spacing protection device of isolator divide-shut brake |
Country Status (1)
| Country | Link |
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| CN (1) | CN219658603U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117672758A (en) * | 2023-12-15 | 2024-03-08 | 法腾电力装备江苏有限公司 | Novel longitudinal rotation double-isolating-switch electric mechanism |
-
2023
- 2023-04-21 CN CN202320903695.9U patent/CN219658603U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117672758A (en) * | 2023-12-15 | 2024-03-08 | 法腾电力装备江苏有限公司 | Novel longitudinal rotation double-isolating-switch electric mechanism |
| CN117672758B (en) * | 2023-12-15 | 2024-05-28 | 法腾电力装备江苏有限公司 | Longitudinal rotation double-isolating-switch electric mechanism |
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