CN220527528U - Locking device of handcart type high-voltage switch complete equipment cabinet door - Google Patents
Locking device of handcart type high-voltage switch complete equipment cabinet door Download PDFInfo
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- CN220527528U CN220527528U CN202322185566.3U CN202322185566U CN220527528U CN 220527528 U CN220527528 U CN 220527528U CN 202322185566 U CN202322185566 U CN 202322185566U CN 220527528 U CN220527528 U CN 220527528U
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- 238000007792 addition Methods 0.000 description 1
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Abstract
The utility model relates to a locking device of a handcart type high-voltage switch complete equipment cabinet door, which comprises an electromagnet arranged on an inner side guard board of the complete equipment door and a locking plate arranged on the complete equipment door, wherein a locking hole through which a pin shaft of a power supply magnet penetrates is formed in the locking plate, and the electromagnet is electrically connected with an auxiliary point of a test position of a handcart chassis. The scheme of the utility model is safe and reliable, the handcart is separated from the test position immediately to realize the locking function, the installation and maintenance are convenient, the device is economical and practical, the device can be configured on all high-voltage switch complete equipment cabinet doors, the misoperation of equipment operation maintenance personnel is better prevented, and the personal safety is ensured; through the arrangement of the rotating plate, the position of the electromagnet is convenient to select and install; through the setting of urgent unblock sticker, remind the position of two urgent unblock bolts of sign to be convenient for discern urgent unblock bolt.
Description
Technical Field
The utility model relates to the field of handcart type high-voltage switches, in particular to the technical field of handcart type high-voltage switch complete equipment cabinet doors, and particularly relates to a locking device of a handcart type high-voltage switch complete equipment cabinet door.
Background
As an electrical device of great importance in an electrical power system, the high-voltage switch complete equipment is required to have a reliable mechanical or electrical misoperation preventing function to provide reliable safety protection for operators and devices, namely, what we say is a "five-prevention" function: 1. the circuit breaker is prevented from being opened or closed by mistake; 2. the on-load switching-on and switching-off isolating switch is prevented; 3. preventing the electrification from closing the grounding switch; 4. preventing the power transmission with the ground wire; and 5, preventing the error entering the charging interval.
The step of preventing the hand truck from being mistakenly charged is that when the hand truck reaches a test position, the grounding switch can be switched on, the cable chamber door can be opened, the grounding switch can be switched on after the maintenance is completed, the hand truck can be rocked to a working position from the test position, and the high-voltage switch complete equipment 'five-prevention function' is a basic function which the high-voltage switch complete equipment must meet.
But there are also certain drawbacks: the anti-false-entering electrified interval in the five-prevention mainly refers to a cable chamber of a switch cabinet, a handcart chamber of the high-voltage switch complete equipment is also a high-voltage compartment, but in the five-prevention function, no measures for preventing electrified entering the handcart chamber are taken, a door of the high-voltage switch complete equipment of the handcart chamber can be opened no matter the handcart is positioned at any position (even if an S-shaped chassis truck is arranged, a middle door can be opened within a certain distance from a test position of the handcart), if the middle door is opened when the handcart is positioned at a certain position between the test position and a working position, and a contact valve baffle at the moment is in a half-opened state, so that operators have electric shock risks.
Therefore, it is necessary to add a locking device to the door of the high-voltage switch complete equipment. Only can the cabinet door be opened when the handcart is in the test position, can block the cabinet door and can't open once the handcart leaves the test position immediately, thoroughly separate operating personnel and high-pressure compartment, ensure personnel and equipment's safety.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a locking device of a handcart type high-voltage switch complete equipment cabinet door, which has the function of isolating an operator from high voltage electricity, and ensures the absolute safety of the operator so that the switch cabinet door can be opened only when the handcart is at a test position.
The utility model is realized through the following technical scheme that the locking device of the handcart type high-voltage switch complete equipment cabinet door comprises an electromagnet arranged on an inner side guard board of the complete equipment door, and a locking plate arranged on the complete equipment door, wherein a locking hole through which a pin shaft of a power supply magnet penetrates is formed in the locking plate, and the electromagnet is electrically connected with an auxiliary point of a test position of a handcart chassis.
When the high-voltage switch complete equipment cabinet door is closed, the electromagnet is in a power-on attraction state when the handcart is at a test position, the pin shaft of the electromagnet is in a shrinkage state, and the locking plate and the electromagnet are in an unlocking position;
when the handcart is put into the handcart, when the handcart just leaves the test position, the auxiliary point of the test position in the handcart chassis is triggered to be disconnected, a disconnection signal is transmitted to the electromagnet through the electric loop, the electromagnet is powered off at the moment, a pin shaft of the electromagnet is popped up to penetrate into a lock hole on the locking lock plate, under the action of the electromagnet and the locking lock plate, the door of the high-voltage switch complete equipment at the moment cannot be opened, and an operator and a high-voltage compartment are isolated, so that the safety of the operator is ensured;
on the contrary, when the handcart returns to the test position, an auxiliary point in the handcart chassis is closed to transmit a connection signal to the locking electromagnet, the locking electromagnet is immediately attracted, the locking electromagnet lock pin is separated from the locking lock hole, and the door of the high-voltage switch complete equipment cabinet can be opened;
the scheme is safe and reliable, the handcart is separated from the test position slightly, the locking function is realized immediately, the installation and maintenance are convenient, the device is economical and practical, the device can be configured on all cabinet doors of the high-voltage switch complete equipment, the misoperation of equipment operation maintenance personnel is prevented, and the personal safety of the equipment operation maintenance personnel is guaranteed.
Preferably, the guard plate is connected with a mounting plate through threads, the electromagnet is fixedly connected to the mounting plate, and a pin shaft of the electromagnet extends upwards vertically.
The arrangement of the rotating plate is convenient for the selection and installation of the position of the electromagnet.
Preferably, the locking lock plate comprises a horizontal plate and a vertical plate, wherein the included angle of the horizontal plate is ninety degrees, the locking hole is formed in the horizontal plate, the horizontal plate is located right above the pin shaft, and the vertical plate is detachably connected to the cabinet door set through two emergency unlocking bolts which are vertically arranged.
This preferred scheme is fixed the locking lock plate installation on high tension switchgear cabinet door through urgent unblock bolt, even when secondary power source breaks down, twists out urgent unblock bolt, makes cabinet door and vertical board break away from to make the locking lock plate not being supporting the cabinet door, thereby make the cabinet door can open.
Preferably, the emergency unlocking bolts penetrate through the cabinet door and then are connected with the vertical plate, and emergency unlocking stickers positioned between the two emergency unlocking bolts are arranged on the outer side of the cabinet door.
The position of two emergency unlocking bolts is reminded and identified by the setting of the emergency unlocking sticker, so that the emergency unlocking bolts can be distinguished conveniently.
The beneficial effects of the utility model are as follows: the scheme is safe and reliable, the handcart is separated from the test position immediately to realize the locking function, the installation and maintenance are convenient, the device is economical and practical, the device can be configured on all cabinet doors of the high-voltage switch complete equipment, the misoperation of equipment operation maintenance personnel is better prevented, and the personal safety of the equipment operation maintenance personnel is ensured; through the arrangement of the rotating plate, the position of the electromagnet is convenient to select and install; through the setting of urgent unblock sticker, remind the position of two urgent unblock bolts of sign to be convenient for discern urgent unblock bolt.
Drawings
FIG. 1 is a schematic view of a locking device of a handcart in a test position;
FIG. 2 is a schematic view of the latch of the cart in the non-testing position;
FIG. 3 is an electrical schematic;
FIG. 4 is a schematic perspective view of the present utility model;
the figure shows:
1. the door comprises a cabinet door set, 2, electromagnets, 3, an inner side guard board, 4, a mounting plate, 5, a locking plate, 6, an emergency unlocking bolt, 7, an emergency unlocking sticker, 8 and a handcart.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
Referring to fig. 1-4, the locking device of the handcart type high-voltage switch complete equipment cabinet door comprises a mounting plate 4 arranged on an inner side guard plate 3 of the complete equipment door, wherein the mounting plate 4 is connected to the inner side guard plate 3 through bolts, an electromagnet 2 is fixedly connected to the mounting plate 4, and a pin shaft of the electromagnet 2 extends upwards vertically.
The integrated cabinet door 1 is further connected with a locking lock plate 5, the locking lock plate 5 comprises a horizontal plate and a vertical plate, the included angle of the horizontal plate is ninety degrees, the horizontal plate extends to the position right above the pin shaft, a lock hole for the pin shaft to penetrate through is formed in the horizontal plate, the vertical plate is detachably connected to the inner side of the integrated cabinet door 1 through two emergency unlocking bolts 6 which are vertically arranged, the emergency unlocking bolts 6 penetrate through the cabinet door and then are connected with the vertical plate, and an emergency unlocking sticker 7 positioned between the two emergency unlocking bolts 6 is arranged on the outer side of the cabinet door.
The electromagnet 2 is electrically connected with an auxiliary point of the test position of the chassis of the handcart 8 through an electric loop.
When the utility model is used, after the cabinet door of the high-voltage switch complete equipment is closed, the electromagnet 2 is in a power-on attraction state when the handcart 8 is at a test position, the pin shaft of the electromagnet 2 is in a shrinkage state, and the locking plate 5 and the electromagnet 2 are in an unlocking position;
when the handcart 8 is rocked in, when the handcart 8 just leaves the test position, the auxiliary point of the test position in the chassis of the handcart 8 is triggered to be disconnected, a disconnection signal is transmitted to the electromagnet 2 through an electric loop, at the moment, the electromagnet 2 is powered off, a pin shaft of the electromagnet is popped up to penetrate into a lock hole on the locking lock plate 5, under the action of the electromagnet 2 and the locking lock plate 5, a cabinet door of the high-voltage switch complete equipment at the moment cannot be opened, an operator is isolated from the high-voltage compartment, and the safety of the operator is ensured;
on the contrary, when the handcart 8 is retracted to the test position, an auxiliary point in the chassis of the handcart 8 is closed to transmit a connection signal to the position of the locking electromagnet 2, the locking electromagnet 2 is immediately attracted, the locking pin of the locking electromagnet 2 is separated from the hole of the locking plate 5, and the door of the high-voltage switch complete equipment cabinet can be opened;
the proposal is safe and reliable, the handcart 8 can be immediately locked when being separated from the test site, the installation and maintenance are convenient, the economy and the practicability are realized, can be configured on all high-voltage switch complete equipment cabinet doors, and can better realize preventing misoperation of equipment operation maintenance personnel and ensure personal safety.
In particular, in the electrical schematic diagram of fig. 3, DCT represents an electromagnet, 5DK is a miniature circuit breaker, 881, 882, 883 represent numbers of wires, S8 is a test position point of a circuit breaker handcart, K1 and K2 are switch position nodes, which are auxiliary points for the test position switch in the scheme, when the handcart moves from a working position to the test position point, the auxiliary points are closed, K1 and K2 are conducted, the electromagnet is electrically attracted, a lock pin of the electromagnet 2 is disengaged from a hole of a locking plate 5, and a door of the high-voltage switch complete equipment cabinet can be opened. On the contrary, when the circuit breaker handcart leaves the test position, auxiliary point disconnection, K1 and K2 disconnection, the electro-magnet loses power, and the lockpin of electro-magnet 2 resets, and the lockpin of electro-magnet 2 inserts in the hole of locking lock board 5, and high tension switch complete sets cabinet door can't open, realizes the shutting function.
Of course, the above description is not limited to the above examples, and the technical features of the present utility model that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present utility model and not for limiting the same, and the present utility model has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present utility model and the scope of the appended claims.
Claims (4)
1. The utility model provides a blocking device of handcart-type high voltage switch complete sets cabinet door which characterized in that: the automatic locking device comprises an electromagnet (2) arranged on an inner side guard board (3) of a complete equipment door, a locking lock plate (5) arranged on the complete equipment door (1), a locking hole for a pin shaft of the power supply electromagnet (2) to penetrate through is formed in the locking lock plate (5), and the electromagnet (2) is electrically connected with an auxiliary point of a test position of a chassis of a handcart (8).
2. The locking device of a cart type high-voltage switch kit cabinet door according to claim 1, wherein: the guard plate is connected with a mounting plate (4) through threads, the electromagnet (2) is fixedly connected to the mounting plate (4), and a pin shaft of the electromagnet (2) extends upwards vertically.
3. The locking device of a cart type high-voltage switch kit cabinet door according to claim 2, wherein: the locking lock plate (5) comprises a horizontal plate and a vertical plate, the included angle of the horizontal plate is ninety degrees, the locking hole is formed in the horizontal plate, the horizontal plate is located right above the pin shaft, and the vertical plate is detachably connected to the cabinet door (1) through two emergency unlocking bolts (6) which are vertically arranged.
4. A locking device for a door of a handcart type high-voltage switch complete equipment set according to claim 3, which is characterized in that: the emergency unlocking bolts (6) penetrate through the cabinet door and then are connected with the vertical plate, and emergency unlocking stickers (7) positioned between the two emergency unlocking bolts (6) are arranged on the outer side of the cabinet door.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321356765X | 2023-05-31 | ||
| CN202321356765 | 2023-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220527528U true CN220527528U (en) | 2024-02-23 |
Family
ID=89926129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322185566.3U Active CN220527528U (en) | 2023-05-31 | 2023-08-15 | Locking device of handcart type high-voltage switch complete equipment cabinet door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220527528U (en) |
-
2023
- 2023-08-15 CN CN202322185566.3U patent/CN220527528U/en active Active
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