CN217507140U - Interlocking mechanism for rear door and grounding switch of switch cabinet - Google Patents
Interlocking mechanism for rear door and grounding switch of switch cabinet Download PDFInfo
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- CN217507140U CN217507140U CN202220798218.6U CN202220798218U CN217507140U CN 217507140 U CN217507140 U CN 217507140U CN 202220798218 U CN202220798218 U CN 202220798218U CN 217507140 U CN217507140 U CN 217507140U
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- interlocking rod
- rear door
- interlocking
- grounding switch
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Abstract
A switch cabinet back door and grounding switch interlocking mechanism comprises a switch cabinet, wherein a back door plate and a door frame are arranged on the back side of the switch cabinet, the back door plate is provided with a vertical rotating shaft and a locking plate, and the locking plate is provided with a locking hole; an interlocking rod can be transversely movably arranged in an inner cavity of a switch cabinet body, a transmission pin is arranged at the first end of the interlocking rod, and the transmission pin is inserted into a long hole of the crank arm; the second end of the interlocking rod is also provided with a unfilled corner; a limiting piece capable of swinging back and forth is further arranged in front of the interlocking rod, and when the grounding switch operating shaft rotates to a switching-on position, the limiting piece is embedded into a notch of the interlocking rod under the action of a spring; the limiting piece is also integrally connected with a linkage piece which protrudes backwards, and when the limiting piece is embedded into the unfilled corner part of the interlocking rod, the linkage piece penetrates through the small hole of the door frame and protrudes backwards out of the back surface of the door frame; the edge part of the back door panel close to one side of the locking plate is also provided with a tongue plate. The utility model discloses convenient operation, the good reliability.
Description
Technical Field
The utility model belongs to the technical field of the cubical switchboard, concretely relates to cubical switchboard back door and earthing switch interlocking device.
Background
The earthing switch is an important device of the switch cabinet. When the rear door of the switch cabinet needs to be opened for internal maintenance and overhaul, the grounding switch needs to be switched on so as to protect personal safety and system safety. Therefore, the following reliable interlocking relationship must be established between the earthing switch and the rear door of the switch cabinet: when the grounding switch is opened, the rear door of the switch cabinet cannot be opened; when the grounding switch is switched on, the rear door can be opened; after the rear door of the switch cabinet is opened and before the rear door of the switch cabinet is closed, the grounding switch cannot be subjected to opening operation; when the rear door is closed, the grounding switch can perform opening operation.
The interlocking function of the switch cabinet back door and the grounding switch can be realized by a mechanical interlocking structure or a program lock. However, the program lock generally has the inconvenience that the key is too many, easily confused or lost, etc. The existing mechanical interlocking structure has some defects, or the operation steps are troublesome, or the interlocking is unreliable, the misoperation is easy, once the back door is opened under the condition that the grounding switch is not switched on, or the grounding switch is switched off after the back door is opened, the serious hidden danger can be brought to personal safety and equipment safety.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming above-mentioned shortcoming and providing a cubical switchboard back door and earthing switch interlocking device, its simple structure, convenient operation, the good reliability.
The purpose can be realized according to the following scheme: a rear door and grounding switch interlocking mechanism of a switch cabinet comprises the switch cabinet, wherein a rear door plate and a door frame are arranged on the rear side of the switch cabinet, a grounding switch is arranged in the switch cabinet and is provided with a grounding switch operating shaft, the axial direction of the grounding switch operating shaft is longitudinal, and the grounding switch operating shaft rotates between a switch-on position and a switch-off position; the rear door plate is provided with a vertical rotating shaft and a locking plate, the locking plate is provided with a locking hole, the rear door plate rotates around the vertical rotating shaft to realize opening or closing, and the locking plate and the vertical rotating shaft are respectively positioned at two opposite ends of the rear door plate in the transverse direction; the plane of the locking plate is vertical to the plane of the rear door plate;
the grounding switch is mainly characterized in that a crank arm is arranged at the tail end of an operating shaft of the grounding switch, and a long hole is formed in the crank arm; an interlocking rod can be transversely movably arranged in an inner cavity of a cabinet body of the switch cabinet, and the axial direction of the interlocking rod is transverse; when the rear door plate is in the closed position, the transverse projection position of the interlocking rod is aligned to the lock hole of the lock plate;
a transmission pin is arranged at the first end of the interlocking rod, the axial direction of the transmission pin is longitudinal, the transmission pin is inserted into a long hole of the crank arm, and the swing of the crank arm drives the interlocking rod to move transversely; when the grounding switch operating shaft rotates to the switching-on position and the rear door panel is in the closing position, the second end of the interlocking rod is separated from the lock hole of the locking plate; when the grounding switch operating shaft rotates to the opening position and the rear door panel is in the closing position, the second end of the interlocking rod is inserted into the lock hole of the lock plate;
the second end of the interlocking rod is also provided with a unfilled corner; a limiting piece capable of swinging back and forth is further arranged in front of the interlocking rod, and the direction of a swing shaft of the limiting piece is parallel to the axial direction of the interlocking rod; the spring is used for applying torque to the limiting sheet, and the elastic force direction of the spring enables the swinging end of the limiting sheet to swing backwards; when the grounding switch operating shaft rotates to a switching-on position, the transverse position of the unfilled corner of the interlocking rod is aligned with the limiting piece, and the limiting piece is embedded into the unfilled corner of the interlocking rod under the action of the spring;
the limiting piece is also integrally connected with a linkage piece which protrudes backwards, and the linkage piece swings forwards and backwards around a swing shaft of the limiting piece along with the limiting piece; the door frame is also provided with a door frame small hole for the interlocking sheet to pass through; when the limiting piece is embedded into the unfilled corner part of the interlocking rod, the interlocking piece penetrates through the small hole of the door frame and protrudes backwards out of the rear surface of the door frame;
a tongue plate is also formed at the edge part of the rear door plate close to one side of the locking plate, and the horizontal distance from the tongue plate to the vertical rotating shaft is greater than that from the locking plate to the vertical rotating shaft; when the rear door plate is in the closed position, the tongue plate is attached to the rear surface of the door frame, the small hole of the door frame is positioned in front of the tongue plate, and the tongue plate of the rear door plate is abutted against the rear end of the interlocking piece.
The utility model has the advantages of it is following and effect:
one, the utility model discloses can make earthing switch and cubical switchboard back door constitute following reliable interlocking relation between the two: when the grounding switch is opened, the rear door of the switch cabinet cannot be opened; when the grounding switch is switched on, the rear door can be opened; after the rear door of the switch cabinet is opened and before the rear door of the switch cabinet is closed, the grounding switch cannot be subjected to opening operation; when the rear door is closed, the grounding switch can perform opening operation.
Secondly, the interlocking relation is reliable, the operation is simple and convenient, and a key is not needed.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of a rear door panel of a cabinet body in a closed state and an open state of a grounding switch according to an embodiment of the present invention.
Fig. 2 is a partially enlarged schematic view of a in fig. 1.
Fig. 3 is a schematic perspective view of a locking plate integrally connected with a limiting plate.
Fig. 4 is a longitudinal projection structure diagram of the main components in the state shown in fig. 1.
Fig. 5 is a schematic vertical sectional structure of relevant main components in the state shown in fig. 1.
Fig. 6 is a schematic view of a three-dimensional structure of the embodiment of the present invention in a state where the door panel is opened and the grounding switch is closed after the cabinet is closed.
Fig. 7 is a partially enlarged view of B in fig. 6.
Fig. 8 is a schematic view of a horizontal projection structure of the relevant main components in the state shown in fig. 6.
Fig. 9 is a schematic view of a vertical sectional structure of the state shown in fig. 6.
Fig. 10 is a schematic longitudinal projection structure of the main components in the state shown in fig. 6.
Fig. 11 is a schematic structural view of the interlock lever and the stopper piece in the state shown in fig. 6.
Detailed Description
The interlocking mechanism for the rear door and the grounding switch of the switch cabinet shown in fig. 1, 2 and 3 comprises the switch cabinet, wherein a rear door plate 1 and a door frame 12 are arranged on the rear side of the switch cabinet, the grounding switch is arranged in the switch cabinet, the grounding switch is provided with a grounding switch operating shaft 3, the axial direction of the grounding switch operating shaft 3 is longitudinal, and the grounding switch operating shaft 3 rotates between a switch-on position and a switch-off position; the rear door panel 1 is provided with a vertical rotating shaft and a locking plate 2, the locking plate 2 is provided with a locking hole 20, as shown in fig. 7, the rear door panel 1 rotates around the vertical rotating shaft to realize opening or closing, and the locking plate 2 and the vertical rotating shaft are respectively positioned at two opposite ends of the rear door panel 1 in the transverse direction; the plane of the locking piece 2 is vertical to the plane of the back door panel 1.
As shown in fig. 1, 4, 10 and 6, a crank arm 31 is provided at the end of the earthing switch operating shaft 3, and the crank arm is provided with a long hole 30; an interlocking rod 4 can be transversely movably arranged in an inner cavity of a cabinet body of the switch cabinet, and the axial direction of the interlocking rod 4 is also transverse; when the rear door panel 1 is in the closed position, the transverse projection position of the interlocking rod 4 is aligned with the lock hole 20 of the lock plate; a transmission pin 5 is arranged at the first end of the interlocking rod 4, the axial direction of the transmission pin 5 is longitudinal, the transmission pin 5 is inserted into the long hole 30 of the crank arm, and the swing of the crank arm 31 drives the interlocking rod 4 to move transversely through the transmission pin 5; when the grounding switch operating shaft 3 rotates to the closing position and the rear door panel 1 is in the closing position, the second end of the interlocking rod 4 is separated from the lock hole 20 of the lock plate; when the earthing switch operating shaft 3 rotates to the opening position and the rear door panel 1 is in the closing position, the second end of the interlocking rod 4 is inserted into the locking hole 20 of the lock plate, as shown in fig. 1, 2 and 4;
as shown in fig. 4, 2, 10 and 11, the second end of the interlocking lever 4 is further formed with a notch 40; as shown in fig. 3, 2, 5, 9 and 11, a limiting piece 6 capable of swinging back and forth is further disposed in front of the interlocking rod, and the direction of the swing shaft 60 of the limiting piece 6 is parallel to the axial direction of the interlocking rod 4, i.e. the direction is transverse; a spring 7 for applying torque to the limiting sheet 6 is further arranged, and the elastic force direction of the spring 7 enables the swinging end of the limiting sheet 6 to swing backwards; when the earthing switch operating shaft 3 rotates to the switching-on position, the transverse position of the unfilled corner 40 of the interlocking rod is aligned with the limiting piece 6, and the limiting piece 6 is embedded into the unfilled corner 40 of the interlocking rod under the action of the spring 7, as shown in fig. 10 and 11;
as shown in fig. 3, 9 and 10, the limiting plate 6 is further integrally connected with a locking plate 61 protruding backwards, and the locking plate 61 swings forwards and backwards around a swing shaft 60 of the limiting plate along with the limiting plate 6; the door frame 12 is further provided with a door frame small hole 10 for the interlocking piece 61 to pass through, when the limiting piece 6 is embedded into the unfilled corner part of the interlocking rod, the interlocking piece 61 passes through the door frame small hole 10 and protrudes backwards out of the rear surface of the door frame 12, as shown in fig. 7, 8 and 9;
as shown in fig. 6, 7, 8 and 9, a tongue plate 11 is further formed at the edge of the rear door panel 1 close to one side of the locking plate 2, and the horizontal transverse distance from the tongue plate 11 to the vertical rotating shaft of the door frame is greater than the horizontal transverse distance from the locking plate 2 to the vertical rotating shaft of the door frame; when the rear door panel 1 is in the closed position, the tongue plate 11 abuts against the rear surface of the doorframe 12, the doorframe small hole 10 is positioned in front of the tongue plate 11, and the tongue plate 11 of the rear door panel abuts against the rear end of the interlocking piece 61, as shown in fig. 5 and 2.
The working principle of the above embodiment is as follows:
under a normal state, the rear door panel 1 is in a closed position, the earthing switch operating shaft 3 is in a brake separating position, the tongue plate 11 abuts against the rear end of the interlocking piece 61, and the transverse projection position of the limiting piece 6 is staggered with the transverse projection position of the interlocking rod 4, as shown in fig. 1, fig. 2, fig. 4 and fig. 5. When the rear door panel 1 needs to be opened, firstly, the earthing switch operating shaft 3 is clockwise rotated to the switching-on position, in the process, the crank arm 31 is clockwise rotated, the crank arm 31 drives the interlocking rod 4 to transversely move rightwards through the transmission pin 5, the second end of the interlocking rod 4 is separated from the lock hole 20 of the locking plate, and at the moment, the rear door panel 1 can be opened, and the opening is shown in fig. 6, 7 and 10; after the rear door panel 1 is opened, the limiting piece 6 is embedded into the unfilled corner 40 of the interlocking rod under the action of the spring 7, so that the interlocking rod 4 is limited to move transversely leftwards, as shown in fig. 11, namely, the connecting lever 31 is limited to rotate anticlockwise around the central axis of the earthing switch operating shaft, the earthing switch operating shaft 3 cannot rotate anticlockwise, the earthing switch cannot perform switching-off operation, the earthing switch is ensured to be in a switching-on state, the earthing switch is prevented from being switched off after the door is opened, electrification in a cabinet is avoided, and the safety of personnel entering the cabinet is ensured;
when the earthing switch is to be operated to open the brake, the back door plate 1 needs to be closed first, the tongue plate 11 of the back door plate presses the connecting lock plate 61, and then the transverse projection position of the limiting plate 6 is staggered with the transverse projection position of the interlocking rod 3, as shown in fig. 5, the limiting plate 6 is separated from the unfilled corner 40 of the interlocking rod 4, the interlocking rod 4 can freely move transversely at the moment (meaning that the crank arm 31 can swing around the central axis of the earthing switch operating shaft, and the earthing switch operating shaft 3 can be operated), then the earthing switch is operated to open the brake, the earthing switch operating shaft drives the crank arm to swing anticlockwise, the crank arm 31 drives the interlocking rod 4 to move transversely leftwards through the transmission pin 5, the second end of the interlocking rod 4 is inserted into the lock hole 20 of the lock plate, and at the moment, the back door plate 1 cannot be opened, as shown in fig. 2 and 4.
Claims (1)
1. A rear door and grounding switch interlocking mechanism of a switch cabinet comprises the switch cabinet, wherein a rear door plate and a door frame are arranged on the rear side of the switch cabinet, a grounding switch is arranged in the switch cabinet and is provided with a grounding switch operating shaft, the axial direction of the grounding switch operating shaft is longitudinal, and the grounding switch operating shaft rotates between a switch-on position and a switch-off position; the rear door plate is provided with a vertical rotating shaft and a locking plate, the locking plate is provided with a locking hole, the rear door plate rotates around the vertical rotating shaft to realize opening or closing, and the locking plate and the vertical rotating shaft are respectively positioned at two opposite ends of the rear door plate in the transverse direction; the plane of the locking plate is vertical to the plane of the rear door plate;
the method is characterized in that: a crank arm is arranged at the tail end of the grounding switch operating shaft, and a long hole is formed in the crank arm; an interlocking rod can be transversely movably arranged in an inner cavity of a cabinet body of the switch cabinet, and the axial direction of the interlocking rod is also transverse; when the rear door plate is in the closed position, the transverse projection position of the interlocking rod is aligned to the lock hole of the lock plate;
a transmission pin is arranged at the first end of the interlocking rod, the axial direction of the transmission pin is longitudinal, the transmission pin is inserted into a long hole of the crank arm, and the swing of the crank arm drives the interlocking rod to move transversely; when the grounding switch operating shaft rotates to the switching-on position and the rear door panel is in the closing position, the second end of the interlocking rod is separated from the lock hole of the locking plate; when the grounding switch operating shaft rotates to the opening position and the rear door panel is in the closing position, the second end of the interlocking rod is inserted into the lock hole of the lock plate;
the second end of the interlocking rod is also provided with a unfilled corner; a limiting piece capable of swinging back and forth is further arranged in front of the interlocking rod, and the direction of a swing shaft of the limiting piece is parallel to the axial direction of the interlocking rod; the spring is used for applying torque to the limiting sheet, and the elastic force direction of the spring enables the swinging end of the limiting sheet to swing backwards; when the grounding switch operating shaft rotates to a switching-on position, the transverse position of the unfilled corner of the interlocking rod is aligned with the limiting piece, and the limiting piece is embedded into the unfilled corner of the interlocking rod under the action of the spring;
the limiting piece is also integrally connected with a linkage piece which protrudes backwards, and the linkage piece swings forwards and backwards around a swing shaft of the limiting piece along with the limiting piece; the door frame is also provided with a door frame small hole for the interlocking sheet to pass through; when the limiting piece is embedded into the unfilled corner part of the interlocking rod, the interlocking piece penetrates through the small hole of the door frame and protrudes backwards out of the rear surface of the door frame;
a tongue plate is formed at the edge part of the rear door plate close to one side of the locking plate, and the horizontal distance from the tongue plate to the vertical rotating shaft is greater than that from the locking plate to the vertical rotating shaft; when the rear door plate is in the closed position, the tongue plate is attached to the rear surface of the door frame, the small hole of the door frame is positioned in front of the tongue plate, and the tongue plate of the rear door plate is pressed against the rear end of the interlocking piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220798218.6U CN217507140U (en) | 2022-04-08 | 2022-04-08 | Interlocking mechanism for rear door and grounding switch of switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220798218.6U CN217507140U (en) | 2022-04-08 | 2022-04-08 | Interlocking mechanism for rear door and grounding switch of switch cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN217507140U true CN217507140U (en) | 2022-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220798218.6U Active CN217507140U (en) | 2022-04-08 | 2022-04-08 | Interlocking mechanism for rear door and grounding switch of switch cabinet |
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| CN (1) | CN217507140U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115938834A (en) * | 2022-10-28 | 2023-04-07 | 万固电气有限公司 | Medium-voltage switch cabinet interlocking mechanism and machining process thereof |
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2022
- 2022-04-08 CN CN202220798218.6U patent/CN217507140U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115938834A (en) * | 2022-10-28 | 2023-04-07 | 万固电气有限公司 | Medium-voltage switch cabinet interlocking mechanism and machining process thereof |
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