CN206098258U - A compact high-voltage switchgear grounding switch mechanism and lower cabinet door interlocking device - Google Patents

Abstract

The utility model relates to a grounding switch mechanism of a compact high-voltage switch cabinet and a lower cabinet door interlocking device, which includes an interlocking piece and a cam set on the operating shaft of the grounding switch. When the switch operation shaft drives the cam to break away from the chain piece, the chain piece moves up and down, and the chain piece is provided with a reset spring for the chain piece to reset; the utility model has the advantages of: the locking of the chain piece is realized through the contact between the cam and the chain piece, and the lower cabinet is realized. In the locked state of the door, the operating shaft of the grounding switch drives the cam to break away from the interlocking piece, so that the interlocking piece moves upward under the action of the return spring, and drives the lower cabinet door to lift upward, realizing the opening of the lower cabinet door. The whole set of devices has high reliability and can Realize the rapid conversion of the grounding switch from the opening state to the closing state, and the control sensitivity is high, which can improve production efficiency, high product reliability, simple overall structure and few parts, simple installation and debugging, and reduce production costs.

Description

A compact high-voltage switchgear grounding switch mechanism and lower cabinet door interlocking device

technical field

The utility model relates to a compact high-voltage switch cabinet grounding switch mechanism and a lower cabinet door interlocking device.

Background technique

Due to the small size of the 12kV compact high-voltage cabinet, and the original plastic pull rope interlocking device has many parts and cumbersome structure, it is difficult to install and debug, and because the plastic pull rope conduit is relatively soft, it is easy to break the plastic conduit during the closing and opening process of the grounding switch. Displacement or deformation, causing the grounding switch to close and open the force that pulls the end of the plastic pull rope cannot be effectively transmitted to the end of the plastic pull rope. Over time, the pull rope may not be able to pull the lower cabinet door bolt connected to the end, resulting in The lower cabinet door cannot be opened or locked normally, and the interlock is invalid.

Utility model content

The technical problem to be solved by the utility model is to provide a compact high-voltage switch cabinet grounding switch mechanism and lower cabinet door interlocking device, which solves the problems of cumbersome installation and debugging and unreliability of the existing interlocking device.

In order to solve the above technical problems, the utility model is realized through the following technical solutions: a compact high-voltage switchgear grounding switch mechanism and lower cabinet door interlocking device, including an interlocking piece connected to the lower cabinet door, sleeved in the grounding switch operation The cam on the shaft realizes the locking of the chain piece when the cam is in contact with the chain piece. When the grounding switch operation shaft drives the cam to break away from the chain piece, the chain piece moves up and down. The chain piece is provided with a reset spring for the chain piece to reset.

Preferably, the interlocking piece includes a connecting part connected to the lower cabinet door and a moving part that controls the up and down movement of the interlocking piece. The moving part is provided with a bending part, and the locking of the interlocking piece is realized when the cam is in contact with the bending part. When the cam is separated from the chain piece, the chain piece can move up and down. The connecting part realizes the reliable connection between the lower cabinet door and the chain piece, and ensures the synchronous movement of the lower cabinet door when the chain piece moves. The setting of the moving part realizes the up and down movement of the chain piece. The setting of the bending part is beneficial to realize cooperation and contact with the cam, so as to achieve safe and reliable control of the chain piece.

Preferably, the cam is provided with an opening, and the locking of the moving part is realized through the contact between the outer surface of the cam and the bending part. The operating shaft of the grounding switch drives the cam to rotate so that the opening faces the bending part, and the interlocking piece is under the action of an external force or a return spring. Moving up and down, the locking of the moving part is realized through the contact between the outer surface of the cam and the bending part. The structure is simple and the locking effect is good. The cam is driven by the operating shaft of the grounding switch. When the opening faces the bending part, the bending part is not affected. The blocking of the outer surface of the cam can realize the up and down movement of the moving part, and the control sensitivity is high.

Preferably, the cam includes a first half circle and a second half circle, and the first half circle and the second half circle are arranged in an eccentric structure, the radius of the first half circle is greater than the radius of the second half circle, through the first half circle and the second half circle The contact of the bending part realizes the locking of the moving part, and the grounding switch operation shaft drives the cam to rotate so that the second half circle is separated from the bending part, and the interlocking piece moves up and down under the action of external force or return spring, and the cam is set as the first half. The circle and the second half circle are arranged in an eccentric structure, and the radius of the first half circle is larger than the radius of the second half circle, which can ensure that the moving part is locked when the first half circle contacts the bending part. When the grounding switch After the operating shaft drives the cam to rotate, the second half circle does not contact the bending part, so that the bending part is not blocked by the outer surface of the first half circle, so that the moving part can move up and down, and the control sensitivity is high.

Preferably, the moving part is provided with a strip hole, and a positioning pin is arranged in the strip hole, and the positioning pin realizes the fixing of the chain piece, and the chain piece moves up and down along the vertical direction of the strip hole, which can ensure that the chain piece moves up and down. The stability, the positioning pin realizes the fixing of the chain piece in the high-voltage switch cabinet, the structure is simple, the installation and disassembly are convenient, the connection is reliable, and the use effect is good.

Preferably, the connecting portion is arranged in a T shape, which can improve the reliability of the connection with the lower cabinet door and prevent the lower cabinet door from loosening when the lower cabinet door is lifted and reset.

Preferably, the return spring is an extension spring, the top of the extension spring is connected with a fixed plate for fixing the extension spring, the bottom end of the extension spring is connected with the moving part, the extension spring is easy to install and disassemble, and the connection is reliable, which can avoid the loosening of the extension spring and ensure The normal movement and smooth reset of the chain piece and the setting of the fixed plate are beneficial to the fixing of the extension spring.

Preferably, the moving part is provided with a connecting post for fixing the extension spring, which is reliable in connection and prevents the extension spring from falling off.

In summary, the utility model has the following advantages: 1. The locking of the interlocking piece is realized through the contact between the cam and the interlocking piece, and the locked state of the lower cabinet door is realized. Under the action of the spring, it moves upwards and drives the lower cabinet door upwards to realize the opening of the lower cabinet door. The whole set of device has high reliability and can realize the rapid transition of the grounding switch from the opening state to the closing state, and the control sensitivity is high. Improve production efficiency and high product reliability;

2. The setting of the return spring can realize the automatic reset of the interlocking piece, so that the lower cabinet door can be restored to the locked state;

3. The grounding switch mechanism and the lower cabinet door interlocking device formed by assembling the cam, the interlocking piece and the return spring have a simple overall structure and few parts, and are easy to install and debug, reducing production costs.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is a structural schematic diagram of a grounding switch mechanism of a compact high-voltage switch cabinet of the present invention and the grounding switch of the lower cabinet door interlocking device;

Fig. 2 is a structural schematic diagram of a grounding switch mechanism of a compact high-voltage switch cabinet of the present invention and the grounding switch of the lower cabinet door interlocking device;

Fig. 3 is the structural representation of the utility model return spring;

Fig. 4 is a schematic structural diagram of the cam in the second embodiment.

detailed description

Embodiment one:

As shown in Figure 1, Figure 2, and Figure 3, a compact high-voltage switchgear grounding switch mechanism and lower cabinet door interlocking device includes an interlocking piece 1 connected to the lower cabinet door 9, which is sleeved on the operating shaft 8 of the grounding switch When the cam 2 is in contact with the chain piece 1, the locking of the chain piece 1 is realized. When the grounding switch operation shaft 8 drives the cam 2 to break away from the chain piece 1, the chain piece 1 moves up and down, and drives the lower cabinet door 9 to move up and down. The interlocking piece 1 is provided with a back-moving spring 3 for the resetting of the interlocking piece 1 .

The locking piece 1 includes a connecting part 11 connected to the lower cabinet door and a moving part 12 that controls the up and down movement of the locking piece 1. The moving part 12 is provided with a bending part 13, and the locking piece is realized when the cam contacts the bending part 13. 1 is locked, and when the cam 2 is separated from the chain piece 1, the chain piece 1 can move up and down. The connecting part realizes the reliable connection between the lower cabinet door and the chain piece, ensuring the synchronous movement of the lower cabinet door when the chain piece moves. The setting of the moving part, The up and down movement of the chain piece is realized, and the setting of the bending part is beneficial to realize cooperation and contact with the cam, so as to achieve safe and reliable control of the chain piece.

The cam 2 is provided with an opening 21, and the locking of the moving part 12 is realized through the contact between the outer surface of the cam 2 and the bending part 13. The operating shaft of the grounding switch drives the cam 2 to rotate so that the opening 21 faces the bending part 13, and the locking piece 1 is in the It moves up and down under the action of external force or return spring 3, and the locking of the moving part is realized through the contact between the outer surface of the cam and the bending part. The structure is simple and the locking effect is good. The cam is driven by the operating shaft of the grounding switch. When the opening faces the bending part When the bending part is not blocked by the outer surface of the cam, the moving part can move up and down, and the control sensitivity is high.

Moving part 12 is provided with strip hole 14, is provided with positioning pin 15 in strip hole 14, and positioning pin 15 realizes the fixing of interlocking sheet 1, and interlocking sheet 1 moves up and down along the vertical direction of strip hole 14, and lower There is a hook 91 set downward on the cabinet door. The movable stroke of the chain piece is greater than the depth of the hook, which can ensure the stability of the chain piece when it moves up and down. The positioning pin realizes the chain piece is fixed in the high-voltage switch cabinet. The structure is simple and easy to install. The disassembly is convenient, the connection is reliable, the use effect is good, and the opening and closing of the lower cabinet door can be well controlled by the stroke of the chain piece.

The connecting part 11 is T-shaped, which can improve the reliability of the connection with the lower cabinet door, and prevent the lower cabinet door from loosening when the lower cabinet door is lifted and reset. The back-moving spring 3 is an extension spring, and the top of the extension spring is connected with a fixed The fixed plate 4 of the extension spring, the bottom end of the extension spring is connected with the moving part 12, the installation and disassembly of the extension spring is convenient, the connection is reliable, the loosening of the extension spring can be avoided, the normal movement and stable reset of the chain plate are guaranteed, the setting of the fixed plate, It is beneficial to the fixing of the extension spring. The moving part 12 is provided with a connecting column for fixing the extension spring, which is reliable in connection and prevents the extension spring from falling off.

Embodiment two:

As described in Embodiment 1, the grounding switch mechanism of the compact high-voltage switch cabinet is interlocked with the lower cabinet door. This embodiment has the following differences: as shown in Figure 4, the cam 2 includes a first half circle 22 and a second half circle 23, and the first half circle 22 and the second half circle 23 are arranged in an eccentric structure, the radius of the first half circle 22 is larger than the radius of the second half circle 23, and the moving part is realized by the contact between the first half circle 22 and the bending part 13 12 is locked, the grounding switch operation shaft drives the cam 2 to rotate so that the second half circle 23 is separated from the bending part 13, and the interlocking piece 1 moves up and down under the action of the external force or the return spring 3, and the cam is set to the first half circle It is arranged with the second half circle in an eccentric structure, and the radius of the first half circle is larger than the radius of the second half circle, which can ensure that the moving part is locked when the first half circle is in contact with the bending part. When the grounding switch is operated After the shaft drives the cam to rotate, the second half circle does not contact the bending part, so that the bending part is not blocked by the outer surface of the first half circle, so that the moving part can move up and down, and the control sensitivity is high.

When in use, when the grounding switch is in the off state, the outer surface of the cam 2 is in contact with the bending portion 13, so that the interlocking piece 1 cannot move upward under the action of the return spring 3, and the lower cabinet door cannot move upward. At this time, the lower cabinet door is in the In the locked state, when the grounding switch is operated to the closed state, the grounding switch operating shaft 8 drives the cam 2 to rotate, so that the opening 21 of the cam 2 is aligned with the bending part 13. At this time, there is no blocking of the outer wall of the cam at the bending part. Interlock piece 1 moves upwards under the effect of external force back-moving spring 3, and the stroke of movement is greater than the depth of hook 91, thereby drives lower cabinet door 9 upwards and mentions, and this moment lower cabinet door is opened; After finishing, lower cabinet door is closed, utilizes The weight of the lower cabinet door itself, with the cooperation of the connecting part and the joint of the lower cabinet door, the lower cabinet door drives the chain piece to overcome the tension of the return spring and move downward. When it moves to the closed state, the height of the bending part of the chain piece is lower than that of the cam. The lowest position of the outer circumference realizes the rotation of the operating shaft 8 of the grounding switch. At this time, the grounding switch can be operated to the grounding opening position to restore the locked state of the lower cabinet door.

In addition to the above-mentioned preferred embodiment, the utility model also has other implementation modes, those skilled in the art can make various changes and deformations according to the utility model, as long as they do not depart from the spirit of the utility model, all should belong to the appended rights of the utility model The scope defined by the requirement.

Claims (8)

1. A compact high-voltage switchgear grounding switch mechanism and lower cabinet door interlocking device, characterized in that: it includes an interlocking piece (1) connected to the lower cabinet door (9), sleeved on the grounding switch operating shaft (8) The cam (2), the locking of the locking piece (1) is realized when the cam (2) is in contact with the locking piece (1), and the locking piece is realized when the grounding switch operation shaft (8) drives the cam (2) to break away from the locking piece (1). (1) moves up and down, and drives the lower cabinet door (9) to move up and down, and the chain piece (1) is provided with the return spring (3) that the chain piece (1) resets. 2. A compact high-voltage switch cabinet grounding switch mechanism and lower cabinet door interlocking device according to claim 1, characterized in that: the interlocking piece (1) includes a connecting portion (11) connected to the lower cabinet door and a section The moving part (12) that controls the up and down movement of the locking piece (1) has a bending part (13) on the moving part (12), and the locking of the locking piece (1) is realized when the cam contacts the bending part (13) , when the cam (2) breaks away from the chain piece (1), the up and down movement of the chain piece (1) is realized. 3. A compact high-voltage switch cabinet grounding switch mechanism and lower cabinet door interlocking device according to claim 2, characterized in that: the cam (2) is provided with an opening (21), through the outer surface of the cam (2) Contact with the bending part (13) to realize the locking of the moving part (12), the operating shaft of the grounding switch drives the cam (2) to rotate so that the opening (21) faces the bending part (13), and the locking piece (1) is under external force or Move up and down under the effect of back-moving spring (3). 4. A compact high-voltage switch cabinet grounding switch mechanism and lower cabinet door interlocking device according to claim 2, characterized in that: the cam (2) includes a first half circle (22) and a second half circle (23) , and the first half circle (22) and the second half circle (23) are arranged in an eccentric structure, the radius of the first half circle (22) is greater than the radius of the second half circle (23), through the first half circle (22) Contact with the bending part (13) to realize the locking of the moving part (12), the grounding switch operation shaft drives the cam (2) to rotate so that the second half circle (23) is separated from the bending part (13), and the locking piece (1 ) moves up and down under the action of external force or return spring (3). 5. A compact high-voltage switchgear grounding switch mechanism and lower cabinet door interlocking device according to claim 3 or 4, characterized in that: the moving part (12) is provided with strip holes (14), and the strip holes (14) is provided with location pin (15) in, and location pin (15) realizes the fixing of chain piece (1), and chain piece (1) moves up and down along the vertical direction of strip hole (14). 6. A compact high-voltage switch cabinet grounding switch mechanism and lower cabinet door interlocking device according to claim 3 or 4, characterized in that: the connecting part (11) is arranged in a T shape. 7. A compact high-voltage switch cabinet grounding switch mechanism and lower cabinet door interlocking device according to claim 3 or 4, characterized in that: the return spring (3) is a tension spring, and the top end of the tension spring is connected with a fixed tension spring The fixed plate (4), the bottom end of the extension spring is connected with the moving part (12). 8. A compact high-voltage switch cabinet grounding switch mechanism and lower cabinet door interlocking device according to claim 7, characterized in that: the moving part (12) is provided with a connecting column for fixing the tension spring.