CN112750635B - Interlocking structure and interlocking method for cabinet door of direct current cabinet and circuit breaker sliding plate - Google Patents
Interlocking structure and interlocking method for cabinet door of direct current cabinet and circuit breaker sliding plate Download PDFInfo
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- CN112750635B CN112750635B CN202110115580.9A CN202110115580A CN112750635B CN 112750635 B CN112750635 B CN 112750635B CN 202110115580 A CN202110115580 A CN 202110115580A CN 112750635 B CN112750635 B CN 112750635B
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- sliding plate
- cabinet door
- cabinet
- locking rod
- hook
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
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Abstract
The invention discloses an interlocking structure of a cabinet door and a circuit breaker sliding plate of a direct current cabinet, which comprises a first lock hook, a second lock hook, a locking rod and an elastic element, wherein the first lock hook is fixed on the cabinet door of the direct current cabinet, the second lock hook is fixed on the circuit breaker sliding plate, the first lock hook and the second lock hook are arranged up and down and are staggered in position, the locking rod is arranged between the first lock hook and the second lock hook, the locking rod is rotatably arranged on the cabinet body, and the locking rod is provided with an elastic device to ensure that the locking rod always keeps a moment in one direction. The invention has the advantages of simple structure, low manufacturing cost and high safety factor.
Description
Technical Field
The invention relates to an interlocking structure and an interlocking method for a cabinet door of a direct current cabinet and a circuit breaker sliding plate.
Background
The metal closed direct-current switch cabinet has an irreplaceable position in a power supply system of an urban rail transit system, plays a crucial role in the reliability of traffic operation, is a heart of the switch cabinet, and is required to prevent mistaken entering of a live interval when the direct-current switch cabinet needs to be opened and the breaker is pulled out for maintenance, so that the personal safety of an operator is protected; and only after the cabinet door lock was gone up to the requirement, could shake the operating position with the circuit breaker, when the circuit breaker was in operating position, the cabinet door can not be opened. The structure of too complicated, the cost is higher, and the interlocking technique of the cabinet door of current direct current cubical switchboard and circuit breaker adopts one set of slide automatic locking structure and one set of cabinet door automatic locking structure simultaneously usually, and chain action through the mechanism contact can reach above-mentioned requirement basically, realizes operating personnel's safety protection, nevertheless has some shortcomings, mainly has:
two sets of interlocking devices are adopted, the mechanism is complex, a large space of the direct-current switch cabinet is occupied, and the manufacturing cost is increased; the existing two sets of automatic locking and anti-slip block mechanisms are independent from each other, interlocking is not realized, and when a plurality of operators are unsmooth in communication or misoperation in unlocking positions of the two mechanisms (when a cabinet door is closed and a sliding plate is close to the cabinet door) and simultaneously operate the cabinet door and the sliding plate, failure of an interlocking device can be caused, and a large safety risk is caused to the operators; the two sets of interlocking device mechanisms have more components, and one part is damaged or failed to cause interlocking failure, so that the failure probability of the system is increased.
In view of the above disadvantages, the invention provides an interlocking structure and an interlocking method for a cabinet door and a circuit breaker sliding plate of a direct current cabinet, which have the advantages of simple structure, low cost and high safety coefficient.
Disclosure of Invention
The invention aims to provide an interlocking structure of a cabinet door and a circuit breaker sliding plate of a direct current cabinet, which is used for controlling the cabinet door and the circuit breaker sliding plate of the direct current switch cabinet.
In order to achieve the purpose, the technical scheme of the invention is an interlocking structure of a cabinet door and a circuit breaker sliding plate of a direct current cabinet, which comprises a first lock hook, a second lock hook, a locking rod and an elastic piece, wherein the first lock hook is fixed on the cabinet door of the direct current cabinet, the second lock hook is fixed on the circuit breaker sliding plate, the first lock hook and the second lock hook are arranged up and down and are staggered in position, the locking rod is arranged between the first lock hook and the second lock hook, the locking rod is rotatably arranged on the cabinet body, and the locking rod is provided with an elastic device to ensure that the locking rod always keeps a moment in one direction.
Preferably, the elastic device is a torsion spring, an extension spring or a pressing block.
Preferably, the center of the locking rod is fixed on a longitudinal beam of the cabinet body through a rotating shaft and can rotate freely.
Preferably, the front end of the lock hook is designed with a chamfer or a circular arc, the height of the hook is smaller than that of the middle section, and the rear end of the hook is designed into an inclined plane with a certain angle to ensure that the lock hook can be smoothly pushed no matter the locking rod is in a horizontal position or rotates for a certain angle.
Preferably, when the cabinet door is opened and closed freely, one end of the locking rod abuts against the middle section part of the first locking hook, and the other end abuts against the middle section part of the second locking hook.
Preferably, the cabinet door can be rotatably opened and closed relative to the cabinet body.
Preferably, the slide is for cabinet body accessible rocker horizontal migration, and the contact point of circuit breaker and electric circuit copper bar is located the other end of relative cabinet door.
A method for interlocking a cabinet door of a direct current cabinet and a sliding plate of a circuit breaker comprises the following steps:
step 1: when the cabinet door of the direct current switch cabinet is closed, the sliding plate slides to the far end of the contact point, one end of the locking rod abuts against the middle section part of the first lock hook, the other end of the locking rod abuts against the middle section part of the second lock hook, any one of the cabinet door and the sliding plate can act, such as the door is opened leftwards, or the sliding plate approaches the contact point rightwards, when the two act simultaneously due to misoperation, the locking rod rapidly slides into the groove of the second lock hook under the action of the torsion spring, and the cabinet door and the circuit breaker are locked;
and 2, step: when the cabinet door is opened, the position of the sliding plate is locked;
and 3, step 3: when the cabinet door is closed, the middle section part of the first lock hook leans against the locking rod, the locking rod can keep a horizontal state and does not rotate, and at the moment, the sliding plate is unlocked;
and 4, step 4: when the sliding plate moves towards the near end of the electric circuit contact, the cabinet door is locked;
and 5: when the slide returns to the contact point distal end, get back to step 1 state, the middle section part of slide latch hook supports the locking lever, and the locking lever can keep the horizontality irrotational, and the cabinet door unblock this moment.
Has the advantages that:
(1) according to the invention, a set of interlocking device is designed between the cabinet door and the circuit breaker sliding plate, so that the traditional two sets of locking structures can be replaced, the structure is simple and reliable, and the space in the cabinet and the manufacturing cost are reduced.
(2) The interlocking structure is adopted, and the locking structures of the two moving parts are mutually linked (the same locking rod is adopted), so that the condition of safety accidents caused by simultaneous unlocking is avoided.
(3) The design form of the lock hook can ensure that the lock hook can be smoothly pushed forward no matter the locking rod is in a horizontal position or rotates for a certain angle, and the lock hook can be effectively locked when the locking rod slides into the groove of the lock hook under the action of the torsion spring.
Drawings
Fig. 1 is a perspective view of an interlocking structure of the present invention.
FIG. 2 is a schematic structural diagram of step 1 of the present invention.
FIG. 3 is a schematic structural view of an interlocking structure of the present invention;
fig. 4 is a schematic structural diagram of the first latch hook or the second latch hook according to the present invention.
In the figure: the electric cabinet comprises a cabinet door-1, a cabinet body-2, a circuit breaker-3, a sliding plate-4, an electric circuit copper bar-5, a cabinet door lock hook-6, a lock rod-7, a rotating shaft-8, a longitudinal beam-9, a sliding plate lock hook-10 and a torsion spring-11.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1, fig. 2, fig. 3, and fig. 4, the technical solution of this embodiment is an interlocking structure of a cabinet door of a dc cabinet and a circuit breaker slide plate, including: cabinet door 1, the cabinet body 2, circuit breaker 3, slide 4, electric circuit copper bar 5. The cabinet door 1 of the direct current switch cabinet can be opened and closed in a rotating mode relative to the cabinet body 2, the circuit breaker 3 is fixed on the sliding plate 4, the sliding plate 4 can move horizontally relative to the cabinet body 2 through the rocker, and the circuit breaker 3 is located at the other end of the cabinet door 1 relative to the contact point of the electric circuit copper bar 5.
The interlock device structure of this embodiment mainly includes: the cabinet door lock hook comprises a cabinet door lock hook 6, a lock rod 7, a rotating shaft 8, a longitudinal beam 9, a sliding plate lock hook 10 and a torsion spring 11. The cabinet door lock hook 6 and the sliding plate lock hook 10 are respectively fixed on the cabinet door 1 and the sliding plate 4, the center of the locking rod 7 is fixed on a longitudinal beam 9 of the cabinet body 2 through a rotating shaft 8 and can freely rotate, and the torsion spring 11 is installed on the rotating shaft of the locking rod to ensure that the locking rod always has the moment of anticlockwise rotation. The lock hook is designed into the shape shown in fig. 4, the front end of the lock hook is designed with a chamfer or a circular arc, the height A of the hook is smaller than the height B of the middle section, and the rear end of the hook is designed into an inclined plane with a certain angle, so that the lock hook can be smoothly pushed no matter the locking rod is in a horizontal position or rotates for a certain angle. When at least one of the two lock hooks reaches the limit position of the close lock rod (namely when the middle section part of the lock hook leans against the lock rod), the lock rod can keep a horizontal state and does not rotate, and the other lock hook can move freely; when one lock hook leaves the locking rod and freely moves, the position of the other lock hook is limited (once the other lock hook leaves the locking rod, the locking rod can rapidly slide into the groove of the lock hook under the action of the torsion spring to limit further action), and the locked locking rod can return along the inclined surface of the lock hook under the action of thrust.
The operation method of the interlocking structure of the cabinet door of the direct current cabinet and the sliding plate of the circuit breaker comprises the following steps:
1) when the cabinet door is closed and the sliding plate reaches the far end of the contact point (as shown in the state of figure 2), any one of the cabinet door and the sliding plate can act (the door is opened leftwards or the sliding plate approaches the contact point rightwards), and when the cabinet door and the sliding plate act simultaneously due to misoperation, the locking rod rapidly slides into the groove of the locking hook under the action of the torsion spring to limit further action;
2) when the cabinet door is opened, the position of the sliding plate is limited;
3) when the cabinet door is closed, the middle section part of the cabinet door lock hook leans against the locking rod, the locking rod can keep the horizontal state and does not rotate, and at the moment, the sliding plate can freely move;
4) when the sliding plate moves towards the near end of the electric circuit contact, the position of the cabinet door is limited;
5) when the slide returns to the contact point distal end, get back to the 2 states of figure, the middle section part of slide latch hook leans on the locking lever, and the locking lever can keep the horizontality irrotational, and the cabinet door can freely open and shut this moment.
The cabinet door can be opened and closed in a rotating mode relative to the cabinet body, the circuit breaker is fixed on the sliding plate, the sliding plate can horizontally move about 0.1m relative to the cabinet body through the rocker, and the contact point of the circuit breaker and an electric circuit is located at the other end of the cabinet door. The concrete requirements are as follows: when the cabinet door is opened, the circuit breaker is kept at the far end of the contact of the electric circuit, namely close to the cabinet door, a certain electric safety distance is ensured, and at the moment, the sliding plate is automatically locked (the sliding plate is forbidden to move towards the near end of the contact); after the cabinet door is completely closed, the sliding plate is unlocked and can move towards the near end of the contact point, and the cabinet door is automatically locked (the door opening operation is forbidden) at the moment, so that the safety is ensured; when the circuit breaker slide returns to the distal end of contact point, the cabinet door locking is eliminated, can freely open and close the door.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are also included in the scope of the present invention.
Claims (5)
1. A cabinet door and breaker sliding plate interlocking structure of a direct current cabinet is characterized in that a first latch hook, a second latch hook, a locking rod and an elastic element are arranged on the cabinet door of the direct current cabinet, the second latch hook is fixed on the breaker sliding plate, the first latch hook and the second latch hook are arranged up and down, the positions are staggered, the locking rod is arranged between the first locking hook and the second locking hook, the center of the locking rod is fixed on the longitudinal beam of the cabinet body through a rotating shaft, can rotate freely, the locking rod is provided with an elastic device to ensure that the locking rod always keeps a moment in one direction, one end of the locking rod is abutted against the middle section part of the first locking hook when the cabinet door is opened and closed freely, the other end of the locking rod is abutted against the middle section part of the second locking hook, the front end of the locking hook is designed with a chamfer or a circular arc, the height of the hook is less than the height of the middle section, and the rear end of the hook is designed into an inclined plane with a certain angle to ensure that the locking hook can be smoothly pushed in no matter the locking rod is in a horizontal position or rotates for a certain angle.
2. The interlocking structure of the door of the direct current cabinet and the sliding plate of the circuit breaker as claimed in claim 1, wherein the elastic device is a torsion spring, a tension spring or a pressing block.
3. The interlocking structure of the door of the direct current cabinet and the sliding plate of the circuit breaker as claimed in claim 2, wherein the door can be opened and closed rotatably relative to the cabinet body.
4. The direct current cabinet door and circuit breaker sliding plate interlocking structure as claimed in claim 3, wherein the sliding plate can move horizontally relative to the cabinet body through a rocker, and a contact point of the circuit breaker and the electric circuit copper bar is located at the other end of the relative cabinet door.
5. A method for interlocking a cabinet door of a direct current cabinet and a sliding plate of a circuit breaker comprises the following steps:
step 1: when the cabinet door of the direct-current switch cabinet is closed, the sliding plate slides to the far end of the contact point, one end of the locking rod abuts against the middle section part of the first lock hook, the other end of the locking rod abuts against the middle section part of the second lock hook, either the cabinet door or the sliding plate can act, such as the door is opened leftwards, or the sliding plate approaches the contact point rightwards, when the two act simultaneously due to misoperation, the locking rod rapidly slides into the groove of the second lock hook under the action of the torsion spring, and the cabinet door and the circuit breaker are locked;
step 2: when the cabinet door is opened, the position of the sliding plate is locked;
and 3, step 3: when the cabinet door is closed, the middle section part of the first lock hook leans against the locking rod, the locking rod can keep a horizontal state and does not rotate, and at the moment, the sliding plate is unlocked;
and 4, step 4: when the sliding plate moves towards the near end of the electric circuit contact, the cabinet door is locked;
and 5: when the slide returns to the contact point distal end, get back to step 1 state, the middle section part of slide latch hook supports the locking lever, and the locking lever can keep the horizontality irrotational, and the cabinet door unblock this moment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110115580.9A CN112750635B (en) | 2021-01-28 | 2021-01-28 | Interlocking structure and interlocking method for cabinet door of direct current cabinet and circuit breaker sliding plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110115580.9A CN112750635B (en) | 2021-01-28 | 2021-01-28 | Interlocking structure and interlocking method for cabinet door of direct current cabinet and circuit breaker sliding plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112750635A CN112750635A (en) | 2021-05-04 |
| CN112750635B true CN112750635B (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110115580.9A Active CN112750635B (en) | 2021-01-28 | 2021-01-28 | Interlocking structure and interlocking method for cabinet door of direct current cabinet and circuit breaker sliding plate |
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| CN (1) | CN112750635B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1251747B (en) * | 1991-10-30 | 1995-05-23 | Cge Spa | DEVICE FOR MECHANICAL MANEUVERING OF SWITCHES AND SIMILAR APPLIANCES, EQUIPPED WITH HOOKING DEVICES, LOCKING AND SIGNALING |
| CN201263051Y (en) * | 2008-09-27 | 2009-06-24 | 汕头正超电气集团有限公司 | Mechanism for locking removal switch cabinet circuit breaker chamber door |
| CN201504019U (en) * | 2009-10-13 | 2010-06-09 | 河南森源电气股份有限公司 | Interlocking device for circuit breaker chamber door of high-voltage switch cabinet |
| CN206452041U (en) * | 2017-02-24 | 2017-08-29 | 山东泰开成套电器有限公司 | A kind of switch cubicle is closed the door locking operating device |
| CN107993862B (en) * | 2017-12-31 | 2019-09-27 | 信尔德科技有限公司 | A kind of interlocking gear of switchgear |
| CN210120367U (en) * | 2019-08-08 | 2020-02-28 | 山东泰开真空开关有限公司 | Door closing interlocking device of vacuum circuit breaker |
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2021
- 2021-01-28 CN CN202110115580.9A patent/CN112750635B/en active Active
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| CN112750635A (en) | 2021-05-04 |
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