CN109671588B - Locking device for grounding switch of metal-enclosed switch cabinet - Google Patents
Locking device for grounding switch of metal-enclosed switch cabinet Download PDFInfo
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- CN109671588B CN109671588B CN201811521346.0A CN201811521346A CN109671588B CN 109671588 B CN109671588 B CN 109671588B CN 201811521346 A CN201811521346 A CN 201811521346A CN 109671588 B CN109671588 B CN 109671588B
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- grounding switch
- operating shaft
- limiting block
- switch operating
- fixed
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- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/06—Interlocking mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/16—Earthing arrangements
Abstract
The invention discloses a grounding switch locking operation device of a metal-enclosed switch cabinet.A bevel gear grounding switch operation mechanism of the device is provided with a grounding switch operation shaft and a fixed grounding switch operation shaft limiting block fixed on the grounding switch operation shaft, and further comprises a movable grounding switch operation shaft limiting block, a mandril interlocking limiting plate, a connecting rod, an installation positioning plate, a mandril and a mandril reset spring. When the rear door is closed, the rear door drives the movable grounding switch operating shaft limiting block to move forwards through the ejector rod and the connecting rod, so that the movable grounding switch operating shaft limiting block is separated from the embedded state with the fixed grounding switch operating shaft limiting block, and the grounding switch operating shaft completes the opening action. When the back door is opened, the ejector rod reset spring drives the movable grounding switch operating shaft limiting block to move backwards through the ejector rod and the connecting rod, so that the movable grounding switch operating shaft limiting block is embedded with the fixed grounding switch operating shaft limiting block, the grounding switch operating shaft cannot rotate, and the brake separating operation cannot be completed.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a metal-enclosed switchgear grounding switch locking operation device for a bevel gear of switchgear.
Background
In order to prevent the field operator from unconsciously performing wrong operations, thereby causing accidents, besides strengthening the training of the operator and implementing a work order system, a positive interlocking device or prompt measures should be added in the design of the switch cabinet. For a switch cabinet, five misoperation prevention functions need to be provided: the circuit breaker is prevented from being switched on by mistake, the upper and lower isolating switches are prevented from being switched on and off by mistake or the circuit breaker handcart is prevented from being pushed in and pulled out by a load, the grounding switch is prevented from being operated by electrification or a temporary grounding wire is prevented from being hooked, the electricity is prevented from being transmitted when the temporary grounding wire or the grounding switch is switched on, and people are prevented from entering an electrified interval by mistake.
The design of the switch cabinet back door and the grounding switch locking mechanism is to meet the five-prevention requirement of the switch cabinet; when the rear door is opened, the grounding switch cannot be opened; when the rear door is closed, the grounding switch can be opened. Can effectually prevent that maintainer mistake from going into electrified interval. However, the existing bevel gear grounding switch and the rear door locking device of the switch device are unreliable, and misoperation is easy to occur.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a metal-enclosed switchgear grounding switch locking operation device for a bevel gear of a switchgear, aiming at the problems that the existing bevel gear grounding switch and a switchgear rear door locking device are unreliable and misoperation is easy to occur, and the technical problem to be solved is to solve the problem that the existing bevel gear grounding switch and the switchgear rear door locking device are unreliable and prevent misoperation.
The technical problem to be solved by the invention can be realized by the following technical scheme:
a grounding switch locking operation device of a metal-enclosed switch cabinet, comprising a bevel gear grounding switch operation mechanism, wherein the bevel gear grounding switch operation mechanism is provided with a grounding switch operation shaft and a fixed grounding switch operation shaft limiting block fixed on the grounding switch operation shaft, the grounding switch operation shaft operates a bevel gear transmission pair in the bevel gear grounding switch operation mechanism through the fixed grounding switch operation shaft limiting block to carry out bevel gear grounding switch operation, and the device is characterized by further comprising:
the movable grounding switch operating shaft limiting block is sleeved on the grounding switch operating shaft in a sliding manner, the movable grounding switch operating shaft limiting block is provided with a limiting bulge and a corresponding limiting groove, and when the bevel gear grounding switch operating mechanism is locked, the limiting bulge on the movable grounding switch operating shaft limiting block is inserted into the corresponding limiting groove on the fixed grounding switch operating shaft limiting block to limit the rotation of the grounding switch operating shaft;
a mandril interlocking limit plate fixed on the cabinet body, wherein a mandril interlocking limit groove is arranged on the mandril interlocking limit plate;
the lower end of the connecting rod is connected with the movable grounding switch operating shaft limiting block so as to drive the movable grounding switch operating shaft limiting block to move back and forth on the grounding switch operating shaft, and locking and unlocking between the connecting rod and the fixed grounding switch operating shaft limiting block are realized;
a mounting positioning plate fixed on the cabinet body;
the top rod penetrates through the mounting positioning plate in a sliding mode, the first end of the top rod is hinged to the upper end of the connecting rod, and the second end of the top rod is driven to move by the rear door of the metal closed switch cabinet when the rear door of the metal closed switch cabinet is closed;
the device comprises a set of ejector rod reset spring arranged on the ejector rod and a limit pin fixed on the ejector rod, wherein the ejector rod reset spring is positioned between the mounting positioning plate and the limit pin.
In a preferred embodiment of the invention, the second end of the carrier rod is meandering.
In a preferred embodiment of the present invention, a roller is provided at the end shaft of the second end of the jack.
In a preferred embodiment of the invention, the ejector rod interlocking limiting plate is a U-shaped ejector rod interlocking limiting plate, and ejector rod interlocking limiting grooves with the same shape are formed on two vertical edges of the U-shaped ejector rod interlocking limiting plate. In a preferred embodiment of the present invention, the mounting positioning plate is a U-shaped mounting positioning plate, the middle portion of the ejector rod passes through ejector rod holes on two vertical edges of the U-shaped mounting positioning plate, and the ejector rod return spring is located between one vertical edge of the U-shaped mounting positioning plate and the limit pin.
Due to the adoption of the technical scheme, the positive progress effect of the locking device of the grounding switch of the metal-enclosed switch cabinet is as follows: the structure has wide application range, simple structure and safe and reliable performance. Relative to the other ground switches and the rear door latch mechanism: the connecting rod is not needed to be connected, the distance is short, the transmission error is small, and the transmission precision is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a grounding switch locking operation device of a metal-enclosed switchgear of the present invention.
Fig. 2 is a front view of the earthing switch locking operation device of the metal enclosed switchgear of the present invention.
Fig. 3 is a schematic diagram of the working state of the earthing switch locking operation device of the metal enclosed switch cabinet of the invention.
Detailed Description
The invention is described in detail below with reference to the drawings and the detailed description.
Referring to fig. 1 and 2, the earthing switch locking operation device of the metal enclosed switch cabinet comprises a bevel gear earthing switch operation mechanism 100, the bevel gear earthing switch operation mechanism 100 is provided with an earthing switch operation shaft 110 and a fixed earthing switch operation shaft stopper 120 fixed on the earthing switch operation shaft 110, and the earthing switch operation shaft 110 operates a bevel gear transmission pair 130 in the bevel gear earthing switch operation mechanism 100 to rotate through the fixed earthing switch operation shaft stopper 120 so as to perform bevel gear earthing switch operation. A limiting groove 121 is formed on the fixed grounding switch operating shaft limiting block 120.
The invention is characterized by further comprising a movable earthing switch operating shaft limiting block 210, a push rod interlocking limiting block, a connecting rod 230, a mounting positioning plate, a push rod 250 and a push rod return spring 260.
The movable ground switch operating shaft stopper 210 is slidably fitted over the ground switch operating shaft 110, and the movable ground switch operating shaft stopper 210 is provided with a stopper protrusion 211 protruding in the direction of the fixed ground switch operating shaft stopper 120. When the bevel gear grounding switch operating mechanism is locked, the limit protrusion 211 on the movable grounding switch operating shaft limit block 210 is inserted into the corresponding limit groove 121 on the fixed grounding switch operating shaft limit block 120 to limit the rotation of the grounding switch operating shaft 110.
The ejector rod interlocking limiting plate is a U-shaped ejector rod interlocking limiting plate 220, the bottom edge 221 of the U-shaped ejector rod interlocking limiting plate 220 is fixed on the cabinet body, and ejector rod interlocking limiting grooves 222a and 223a with the same shape are formed in two vertical edges 222 and 223 of the U-shaped ejector rod interlocking limiting plate 220.
The mounting positioning plate is a U-shaped mounting positioning plate 240, the bottom edge 241 of the U-shaped mounting positioning plate 240 is fixed on the cabinet body, and two vertical edges 242 and 243 of the U-shaped mounting positioning plate 240 are provided with coaxial ejector rod holes 242a and 243 a.
The connecting rod 230 passes through the push rod interlocking limiting grooves 222a and 223a on the two vertical edges 222 and 223 of the U-shaped push rod interlocking limiting plate 220, and the lower end of the connecting rod 230 is fixedly connected with the movable grounding switch operating shaft limiting block 210.
The middle of the top rod 250 passes through two vertical edges 242, 243 of the U-shaped mounting positioning plate 240 and is provided with coaxial top rod holes 242a, 243a, and the first end 251 thereof is hinged with the upper end of the connecting rod 230. The second end 252 of the push rod 250 is serpentine. A roller 253 is provided at the end shaft of the second end 252 of the plunger 250.
The top rod return spring 260 is sleeved on the middle portion of the top rod 250 and located between the two vertical edges 242, 243 of the U-shaped mounting positioning plate 240, a limit pin 254 is radially fixed on the middle portion of the top rod 250, and the limit pin 254 is also located between the two vertical edges 242, 243 of the U-shaped mounting positioning plate 240. The push rod return spring 260 is located between the vertical edge 243 of the U-shaped mounting and positioning plate 240 and the limit pin 254.
Referring to fig. 3, the earthing switch locking operation device of the metal-enclosed switch cabinet of the invention is applied to a KYN61 cabinet, and the U-shaped ejector rod interlocking limit plate 220 and the U-shaped installation positioning plate 240 are installed at corresponding positions of the cabinet body rear side plate 310; when the rear door 320 is closed, the rear door 320 drives the push rod 250 to move forward through the roller 253, the connecting rod 230 is driven to move forward in the forward movement process of the push rod 250, and the movable grounding switch operating shaft limiting block 210 is driven to move forward along the grounding switch operating shaft 110 in the forward movement process of the connecting rod 230, so that the limiting protrusion 211 on the movable grounding switch operating shaft limiting block 210 is withdrawn from the limiting groove 121 on the fixed grounding switch operating shaft limiting block 120, and the grounding switch operating shaft 110 drives the bevel gear transmission pair 130 in the bevel gear grounding switch operating mechanism 100 to rotate, thereby completing the opening action. In the process, the mandril reset spring 260 is compressed and stored energy under the action of the limit pin 254.
When the back door 320 is opened, the roller 253 loses the limitation, the ejector rod reset spring 260 is released, under the action of the ejector rod reset spring 260, the ejector rod 250 is pushed to move backwards, the connecting rod 230 is driven to move backwards in the backward movement process of the ejector rod 250, and the movable grounding switch operating shaft limiting block 210 is driven to move backwards along the grounding switch operating shaft 110 in the backward movement process of the connecting rod 230, so that the limiting protrusion 211 on the movable grounding switch operating shaft limiting block 210 is inserted into the limiting groove 121 on the fixed grounding switch operating shaft limiting block 120 to clamp the fixed grounding switch operating shaft limiting block 120, the grounding switch operating shaft 110 cannot rotate, and the brake separating action cannot be completed.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (5)
1. A grounding switch locking operation device of a metal-enclosed switch cabinet, comprising a bevel gear grounding switch operation mechanism, wherein the bevel gear grounding switch operation mechanism is provided with a grounding switch operation shaft and a fixed grounding switch operation shaft limiting block fixed on the grounding switch operation shaft, the grounding switch operation shaft operates a bevel gear transmission pair in the bevel gear grounding switch operation mechanism through the fixed grounding switch operation shaft limiting block to carry out bevel gear grounding switch operation, and the device is characterized by further comprising:
the movable grounding switch operating shaft limiting block is sleeved on the grounding switch operating shaft in a sliding manner, the movable grounding switch operating shaft limiting block is provided with a limiting bulge and a corresponding limiting groove, and when the bevel gear grounding switch operating mechanism is locked, the limiting bulge on the movable grounding switch operating shaft limiting block is inserted into the corresponding limiting groove on the fixed grounding switch operating shaft limiting block to limit the rotation of the grounding switch operating shaft;
the push rod interlocking limiting plate is fixed on the cabinet body, and a push rod interlocking limiting groove is formed in the push rod interlocking limiting plate;
the lower end of the connecting rod is connected with the movable grounding switch operating shaft limiting block so as to drive the movable grounding switch operating shaft limiting block to move back and forth on the grounding switch operating shaft, and locking and unlocking between the connecting rod and the fixed grounding switch operating shaft limiting block are realized;
a mounting positioning plate fixed on the cabinet body;
the top rod penetrates through the mounting positioning plate in a sliding mode, the first end of the top rod is hinged to the upper end of the connecting rod, and the second end of the top rod is driven to move by the rear door of the metal closed switch cabinet when the rear door of the metal closed switch cabinet is closed;
the device comprises a set of ejector rod reset spring arranged on the ejector rod and a limit pin fixed on the ejector rod, wherein the ejector rod reset spring is positioned between the mounting positioning plate and the limit pin.
2. The earthing switch locking operating device of metal-enclosed switchgear of claim 1, wherein the second end of said jack is zigzag.
3. The earthing switch locking operating device of metal-enclosed switchgear of claim 2, wherein a roller is provided at the end shaft of the second end of said jack.
4. The earthing switch locking operation device of metal-enclosed switchgear as claimed in claim 1, wherein the ejector linkage limiting plate is a U-shaped ejector linkage limiting plate, and ejector linkage limiting grooves having the same shape are formed on both vertical edges of the U-shaped ejector linkage limiting plate.
5. An earthing switch locking operation device of metal enclosed switchgear as claimed in claim 1, wherein said mounting positioning plate is a U-shaped mounting positioning plate, the middle part of said ejector rod passes through the ejector rod holes on both vertical sides of said U-shaped mounting positioning plate, said ejector rod return spring is located between a vertical side of said U-shaped mounting positioning plate and said limit pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811521346.0A CN109671588B (en) | 2018-12-12 | 2018-12-12 | Locking device for grounding switch of metal-enclosed switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811521346.0A CN109671588B (en) | 2018-12-12 | 2018-12-12 | Locking device for grounding switch of metal-enclosed switch cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109671588A CN109671588A (en) | 2019-04-23 |
| CN109671588B true CN109671588B (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811521346.0A Active CN109671588B (en) | 2018-12-12 | 2018-12-12 | Locking device for grounding switch of metal-enclosed switch cabinet |
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| Country | Link |
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| CN (1) | CN109671588B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110931276A (en) * | 2019-12-10 | 2020-03-27 | 扬州镕锐达机械有限公司 | Locking mechanism for operating shaft of grounding switch in door opening state of central switch cabinet door |
| CN111029204A (en) * | 2019-12-30 | 2020-04-17 | 青岛益和电气集团股份有限公司 | Locking device for rear door and grounding switch of switch cabinet |
| CN116153685B (en) * | 2023-04-18 | 2023-07-18 | 江苏国控电力设备有限公司 | Metal-enclosed switchgear grounding switch locking device and switchgear |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8911765U1 (en) * | 1989-10-03 | 1991-01-31 | Ramsauer, Dieter, 5620 Velbert, De | |
| CN101976622B (en) * | 2010-11-02 | 2012-01-11 | 山东鲁亿通智能电气股份有限公司 | Grounding switch operating device of removable switch cabinet |
| CN103155315B (en) * | 2011-01-31 | 2015-06-17 | 江苏东源电器集团股份有限公司 | Switch apparatus with internal arcing prevention |
| CN203179729U (en) * | 2013-01-17 | 2013-09-04 | 国家电网公司 | Interlocking mechanism of grounding switch and cable chamber door of switch cabinet |
| CN204289164U (en) * | 2014-12-29 | 2015-04-22 | 日新恒通电气有限公司 | The reverse locking device of the earthed switch of high-tension switch cabinet and back door |
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2018
- 2018-12-12 CN CN201811521346.0A patent/CN109671588B/en active Active
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| Publication number | Publication date |
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| CN109671588A (en) | 2019-04-23 |
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