CN215578270U - Mechanical interlocking mechanism of electric handcart and grounding disconnecting link - Google Patents
Mechanical interlocking mechanism of electric handcart and grounding disconnecting link Download PDFInfo
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- CN215578270U CN215578270U CN202121390653.7U CN202121390653U CN215578270U CN 215578270 U CN215578270 U CN 215578270U CN 202121390653 U CN202121390653 U CN 202121390653U CN 215578270 U CN215578270 U CN 215578270U
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- door cover
- grounding disconnecting
- bevel gear
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Abstract
The utility model provides a mechanical interlocking mechanism of an electric handcart and a grounding disconnecting link, belonging to the technical field of mine explosion-proof electrical equipment; the purpose is to avoid the problem of potential safety hazard caused by misoperation of workers; the electric handcart is arranged in the box body structure, the front end inside the box body structure is connected with the electric handcart in a sliding mode, the rear end inside the box body structure is provided with the grounding disconnecting link, the front part of the box body is provided with the door cover, the electric handcart is provided with the vacuum circuit breaker, the mechanical interlocking device comprises a driving shaft and an interlocking shaft, and the door cover, the electric handcart and the grounding disconnecting link are all controlled through the interlocking shaft, so that the grounding disconnecting link is in a disconnected state when the door cover is closed, the vacuum circuit breaker is in a powered-on state, and the grounding disconnecting link is in a powered-on state when the door cover is opened, and the vacuum circuit breaker is in a powered-off state; the high-voltage switch has the advantages that the structure is simple, the door cover cannot be opened when the high-voltage switch equipment runs, the door cover can be opened only when the grounding switch is switched on, misoperation can be avoided, and the high-voltage switch is safe and reliable.
Description
Technical Field
The utility model belongs to the technical field of mining explosion-proof electrical equipment, and particularly relates to a mechanical interlocking mechanism of an electric handcart and a grounding disconnecting link.
Background
The mining explosion-proof high-voltage vacuum power distribution device is suitable for the environment with explosive mixtures such as methane, coal dust and the like under a coal mine, and particularly has the possibility of misoperation when some emergency situations are handled, so that the equipment must be provided with an electrical and mechanical interlocking mechanism to ensure the operation sequence.
Because high tension switchgear's voltage is higher, in order to ensure operation maintainer's personal safety, has strict requirement to some interlocks in high tension switchgear's operation, and interlock control's door closure should be furnished with interlock to main return circuit part accessible in the main cavity can open this door closure when not electrified and ground connection.
The purpose of the interlock is to ensure safe and reliable operation of electrical equipment that often generates sparks, arcs, and dangerous temperatures during normal operation. The requirement of the device is that when the power is switched on, the door cover can not be opened absolutely, when the door cover is opened, the power supply of the device needs to be cut off in advance, and the prior interlocking device can cause the condition that the door cover is opened when the power is switched on due to the misoperation of workers, thereby causing potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the defects of the prior art, provides a mechanical interlocking mechanism of an electric handcart and a grounding disconnecting link, and aims to avoid the problem of potential safety hazard caused by misoperation of workers.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
A mechanical interlocking mechanism of an electric handcart and a grounding disconnecting link is characterized in that the electric handcart is arranged in a box body structure, the inner front end of the box body structure is connected with the electric handcart in a sliding manner, the inner rear end of the box body structure is provided with the grounding disconnecting link, the front part of the box body is provided with a door cover, a vacuum circuit breaker is arranged on the electric handcart, the mechanical interlocking device comprises a driving shaft and an interlocking shaft, one end of the driving shaft is provided with a first bevel gear, the grounding disconnecting link is provided with a rotating shaft, the rotating shaft is provided with a fourth bevel gear, one end of the interlocking shaft is provided with a second bevel gear meshed with the first bevel gear, the other end of the interlocking shaft is provided with a third bevel gear meshed with the fourth bevel gear, the interlocking shaft is provided with a stop cam, the rear end of the vacuum circuit breaker is provided with a linkage rod, and the linkage rod is provided with a sliding block, the sliding block is arranged on a bottom plate of the box body structure, and a spring is arranged between the linkage rod and the box body structure;
a locking screw rod is arranged at the front end of the box body structure, a groove structure is arranged at one end, away from the first bevel gear, of the driving shaft, the locking screw rod is arranged between the door cover and the groove structure, when the door cover is in a closed state, one end of the locking screw rod is connected with the door cover, a gap is formed between the other end of the locking screw rod and the side face of the driving shaft, and the grounding disconnecting link is in a disconnected state; when the door cover is in an open state, a gap is formed between one end of the locking screw and the door cover, the other end of the locking screw is arranged in the groove, and the grounding disconnecting link is in a connected state.
Furthermore, the locking screw rod is arranged at the lower part of the front end of the box body structure, and a hole matched with the locking screw rod is formed in the door cover.
Further, one end of the driving shaft, which is far away from the first bevel gear, is arranged outside the box body, the first bevel gear is arranged inside the box body structure, and the interlocking shaft is arranged inside the box body structure.
Further, the axis of the driving shaft is perpendicular to the axis of the interlocking shaft, and the axis of the rotating shaft is perpendicular to the axis of the interlocking shaft.
Further, the box structure is a closed structure.
Compared with the prior art, the utility model has the following beneficial effects: the high-voltage switch device has a simple structure, the door cover cannot be opened when the high-voltage switch device runs, and the door cover can be opened only when the grounding switch is switched on, so that misoperation can be avoided, and the high-voltage switch device is safe and reliable.
Drawings
The utility model is further described below with reference to the accompanying drawings;
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
the device comprises a vacuum circuit breaker 1, a grounding disconnecting link 2, an electric handcart 3, a locking screw rod 4, a driving shaft 5, an interlocking shaft 6, a spring 7, a fourth bevel gear 8, a first bevel gear 9, a linkage rod 10, a stopping cam 11, a sliding block 12, a second bevel gear 13 and a third bevel gear 14.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the embodiments and the accompanying drawings, it is to be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention, and the technical solutions of the present invention are described in detail with reference to the embodiments and the accompanying drawings, but the scope of protection is not limited thereby.
The structure of the mining explosion-proof high-voltage power distribution device is divided into a plurality of chambers. The electric handcart 3 and the vacuum circuit breaker 1 are connected into a whole respectively by a main cavity, a wire inlet cavity, a wire outlet cavity, a grounding knife cavity and the like. The operation sequence is as follows: the sequence of closing the door cover, locking, disconnecting the grounding knife switch 2, entering the electric handcart 3 and closing the vacuum circuit breaker 1 is opposite.
The utility model discusses and designs a safe and reliable mechanical interlocking device, when a high-voltage switch device runs, a door cover cannot be opened, and the door cover can be opened only when an earthing switch is switched on.
The electric handcart 3 is arranged in a box body structure (not shown in the figure), the front part of the box body structure is provided with a door cover (not shown in the figure), a sliding rail is arranged on a bottom plate of the box body structure, the electric handcart 3 is arranged on the sliding rail, the vacuum circuit breaker 1 is arranged on the electric handcart 3, the electric handcart 3 can slide back and forth along the sliding rail, the rear end of the box body structure is provided with the grounding disconnecting link 2, and the electric handcart 3 is positioned in front of the grounding disconnecting link 2.
As shown in fig. 1-2, the mechanical interlocking mechanism of an electric handcart 3 and a grounding disconnecting link 2 comprises a driving shaft 5 and an interlocking shaft 6, wherein one end of the driving shaft 5 is provided with a first bevel gear 9, the grounding disconnecting link 2 is provided with a rotating shaft in a penetrating manner, one end of the interlocking shaft 6 is provided with a second bevel gear 13 meshed with the first bevel gear 9, the other end of the interlocking shaft 6 is provided with a third bevel gear 14 meshed with a fourth bevel gear 8, the axis of the driving shaft 5 is vertical to the axis of the interlocking shaft 6, the axis of the rotating shaft is vertical to the axis of the interlocking shaft 6, the interlocking shaft 6 is provided with a stop and stop cam 11, the rear end of the vacuum circuit breaker 1 is provided with a linkage rod 10, the linkage rod 10 is provided with a slide block 12 for blocking the stop and stop cam 11, the slide block 12 is arranged on a bottom plate of a box structure, a spring 7 is arranged between the linkage rod 10 and the bottom plate of the box structure, the interlocking device is used for resetting the linkage rod 10, one end of the driving shaft 5, which is far away from the first bevel gear 9, is arranged outside the box body, the first bevel gear 9 is arranged inside the box body structure, and the interlocking shaft 6 is arranged inside the box body structure.
A locking screw rod 4 is arranged at the lower part of the front end of the box body structure, a groove structure is arranged at one end, away from the first bevel gear 9, of the driving shaft 5, the locking screw rod 4 is arranged between the door cover and the groove structure, a hole matched with the locking screw rod 4 is formed in the door cover, when the door cover is in a closed state, one end of the locking screw rod 4 is connected with the door cover, a gap is formed between the other end of the locking screw rod 4 and the side face of the driving shaft 5, and the grounding disconnecting link 2 is in a disconnected state; when the door cover is in an open state, a gap is arranged between one end of the locking screw rod 4 and the door cover, the other end of the locking screw rod is arranged in the groove, and the grounding disconnecting link 2 is in a connection state.
The working process is that when the power-on operation is executed, the door cover is closed, the locking screw rod 4 moves towards the direction close to the door cover and is inserted into the corresponding hole in the door cover to lock the door cover, meanwhile, the locking screw 4 is disengaged from the groove of the driving shaft 5, the driving shaft 5 is rotated, the driving shaft 5 drives the interlocking shaft 6 to rotate through the first bevel gear 9 and the second bevel gear 13, the interlocking shaft 6 drives the rotating shaft to rotate through the third bevel gear 14 and the fourth bevel gear 8, so that the grounding switch is disconnected, the electric handcart 3 is driven by the self-arranged screw rod to move backwards to the power-on position, the isolation pin on the vacuum circuit breaker 1 is connected with the main loop, the interior of the handcart can not swing due to self-locking, the self-locking in the handcart belongs to the prior art, the stop cam 11 on the interlocking shaft 6 is also blocked by the sliding block 12, so that the interlocking shaft 6 can not continuously rotate, and power can be supplied to the vacuum circuit breaker 1 at this time.
When the maintenance operation is executed, the electric handcart 3 moves forwards to a power-off position, self-locking inside the electric handcart 3 is released after power-off, at the moment, the vacuum circuit breaker 1 does not carry load, the linkage rod 10 resets under the action of the spring 7, the slide block 12 cannot block rotation of the stop cam 11 due to forward movement, the drive shaft 590 degrees rotates clockwise, the drive shaft 5 drives the interlocking shaft 6 to rotate, the grounding switch is in a connected state, meanwhile, the rotation of the interlocking shaft 6 also triggers the internal self-locking mechanism of the electric handcart 3, the handcart cannot shake, the door cover is allowed to be opened, the locking screw rod 4 moves towards the direction far away from the door cover, the locking screw rod 4 is separated from a hole in the door cover, the door cover can be opened, and meanwhile, the locking screw rod 4 enters a groove of the drive shaft 5, and the drive shaft 5 cannot rotate.
The driving shaft 5 is provided with two positions, one is a separation position, the other is a closing position, the separation position corresponds to the grounding disconnecting link 2 in an off state, the closing position corresponds to the grounding disconnecting link 2 in an on state, the door cover, the electric handcart 3 and the grounding disconnecting link 2 are controlled by the interlocking shaft 6, the interlocking shaft 6 has the separation state and the closing state, the on-off state of the grounding disconnecting link is directly controlled, holes are omitted on the door cover, more electric elements can be installed, and the door cover is attractive in appearance.
While the utility model has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (5)
1. A mechanical interlocking mechanism of an electric handcart and a grounding disconnecting link, wherein the electric handcart is arranged in a box body structure, the inner front end of the box body structure is connected with the electric handcart in a sliding manner, the inner rear end of the box body structure is provided with the grounding disconnecting link, the front part of the box body is provided with a door cover, the electric handcart is provided with a vacuum circuit breaker, the mechanical interlocking mechanism is characterized in that the mechanical interlocking mechanism comprises a driving shaft and an interlocking shaft, one end of the driving shaft is provided with a first bevel gear, the grounding disconnecting link is provided with a rotating shaft, the rotating shaft is provided with a fourth bevel gear, one end of the interlocking shaft is provided with a second bevel gear meshed with the first bevel gear, the other end of the interlocking shaft is provided with a third bevel gear meshed with the fourth bevel gear, the interlocking shaft is provided with a stop cam, the rear end of the vacuum circuit breaker is provided with a linkage rod, and the linkage rod is provided with a slide block, the sliding block is arranged on a bottom plate of the box body structure, and a spring is arranged between the linkage rod and the box body structure;
a locking screw rod is arranged at the front end of the box body structure, a groove structure is arranged at one end, away from the first bevel gear, of the driving shaft, the locking screw rod is arranged between the door cover and the groove structure, when the door cover is in a closed state, one end of the locking screw rod is connected with the door cover, a gap is formed between the other end of the locking screw rod and the side face of the driving shaft, and the grounding disconnecting link is in a disconnected state; when the door cover is in an open state, a gap is formed between one end of the locking screw and the door cover, the other end of the locking screw is arranged in the groove, and the grounding disconnecting link is in a connected state.
2. The mechanical interlocking mechanism of the electric handcart and the grounding disconnecting link according to claim 1, wherein the locking screw is arranged at the lower part of the front end of the box structure, and the door cover is provided with a hole matched with the locking screw.
3. The mechanical interlocking mechanism of the electric handcart and the grounding disconnecting link according to claim 1, wherein one end of the driving shaft, which is far away from the first bevel gear, is arranged outside the box body, the first bevel gear is arranged inside the box body structure, and the interlocking shaft is arranged inside the box body structure.
4. The mechanical interlocking mechanism of the electric handcart and the grounding disconnecting link according to claim 1, wherein the axis of the driving shaft is perpendicular to the axis of the interlocking shaft, and the axis of the rotating shaft is perpendicular to the axis of the interlocking shaft.
5. The mechanical interlocking mechanism of the electric handcart and the grounding disconnecting link according to claim 1, wherein the box body structure is a closed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121390653.7U CN215578270U (en) | 2021-06-22 | 2021-06-22 | Mechanical interlocking mechanism of electric handcart and grounding disconnecting link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121390653.7U CN215578270U (en) | 2021-06-22 | 2021-06-22 | Mechanical interlocking mechanism of electric handcart and grounding disconnecting link |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215578270U true CN215578270U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121390653.7U Active CN215578270U (en) | 2021-06-22 | 2021-06-22 | Mechanical interlocking mechanism of electric handcart and grounding disconnecting link |
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| CN (1) | CN215578270U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115985711A (en) * | 2023-03-17 | 2023-04-18 | 北京国力电气科技有限公司 | High-voltage explosion-proof switch |
-
2021
- 2021-06-22 CN CN202121390653.7U patent/CN215578270U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115985711A (en) * | 2023-03-17 | 2023-04-18 | 北京国力电气科技有限公司 | High-voltage explosion-proof switch |
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