CN218976162U

CN218976162U - Interlocking mechanism for switch cabinet and switch cabinet

Info

Publication number: CN218976162U
Application number: CN202222760564.8U
Authority: CN
Inventors: 孙梓铭; 侯小宇
Original assignee: Siemens Medium Voltage Switching Technologies Wuxi Ltd
Current assignee: Siemens Medium Voltage Switching Technologies Wuxi Ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-05-05
Anticipated expiration: 2032-10-20

Abstract

The utility model provides a linkage mechanism for a switch cabinet and the switch cabinet, wherein the switch cabinet comprises a first chamber, a second chamber and a bracket, a moving part is arranged in the first chamber, the second chamber comprises a second cabinet door, the bracket is positioned between the first chamber and the second chamber, and the bracket is provided with a first hole; the interlocking mechanism comprises: a plate-like body having a second hole, the plate-like body being movable along a first direction between a first position where the second hole is capable of overlapping with the position of the first hole and the height of the second hole is smaller than the height of the first hole, and a moving member capable of moving in the first hole and the second hole; and one end of the elastic piece is fixed on the plate-shaped body, the other end of the elastic piece is fixed on the bracket, and the elastic piece can apply a pulling force to the plate-shaped body to keep the plate-shaped body at the second position under the action of no external force. The structure can ensure the safety protection level of the switch cabinet.

Description

Interlocking mechanism for switch cabinet and switch cabinet

Technical Field

The utility model relates to the field of switch cabinets, in particular to a linkage mechanism for a switch cabinet and the switch cabinet.

Background

The switch cabinet is an essential device in the power system, and plays roles of opening and closing, controlling and protecting electric equipment.

In the case of a gas-insulated switchgear cabinet, which has a gas box, the circuit breaker is located in the gas box, and the operating mechanism of the circuit breaker is located in an operating mechanism chamber 11. Below the operating mechanism compartment 11 is typically a cable compartment. A support 12 is located between the operating mechanism compartment 11 and the cable compartment. In order to ensure the safety of the personnel, the operating mechanism chamber 11 generally has a safety interlock, which is in each case interlocked with the cabinet door 13 of the cable chamber and with a cover plate on the operating opening of the operating mechanism chamber 11. In the case of a closed door 13 of the cable compartment, the cover plate can be opened, i.e. allowing a worker to operate the operating mechanism in the operating compartment through the operating aperture. The cabinet door 13 of the cable chamber is generally of the pull-up type, with a direction of movement, as shown in fig. 1 as the first direction D and in a direction opposite to the first direction D. During the movement in the first direction D, the door 13 of the cable compartment is moved in the closing direction and pushes the safety interlock to a release position, so that the cover can be opened and the operator can operate the operating mechanism.

Because of the presence of the safety interlock device, a first aperture 121 needs to be formed in the bracket 12 to allow the moving member of the safety interlock device to extend from the first aperture 121. The presence of the first hole 121 may affect the safety level of the switchgear.

Disclosure of Invention

In view of this, the present utility model proposes a linkage mechanism for a switchgear cabinet comprising a first chamber, a second chamber and a support, said first chamber being located above said second chamber, said first chamber having a moving member therein, said second chamber comprising a second door, said support being located between said first chamber and said second chamber, said support having a first aperture; the interlocking mechanism comprises:

a plate-like body having a second hole, said plate-like body being movable in a first direction between a first position in which said second hole is capable of overlapping the position of said first hole and the height of said second hole is smaller than the height of said first hole, said moving member being capable of moving in said first hole and said second hole;

and one end of the elastic piece is fixed on the plate-shaped body, the other end of the elastic piece is fixed on the bracket, and the elastic piece can apply a pulling force to the plate-shaped body to keep the plate-shaped body at the second position under the condition that the elastic piece is not subjected to external force.

Through this interlocking structure for the cabinet door of cable room under the condition of closing, the position of original first hole on the support can not expose the cabinet door of cable room, can realize the cover in clearance on the support under the condition that does not change original structure and interlocking, simple structure and cost are lower, also can guarantee the safety protection level of cubical switchboard.

According to the interlocking mechanism as described above, optionally, the width of the second hole is smaller than the width of the first hole or the second hole is in clearance fit with the moving member. This can further increase the protection level of the switchgear.

According to the interlocking mechanism, the interlocking mechanism further comprises a protruding part, wherein the protruding part is fixed on the plate-shaped body and extends towards one side of the plate-shaped body away from the bracket, and the second cabinet door can drive the plate-shaped body to move towards the first position through the protruding part in the process of closing the second cabinet door. The second cabinet door drives the platy body to switch between the first position and the second position in the moving process through the protruding part, and the cabinet door has a simple structure and low cost.

According to the interlocking mechanism as described above, optionally, the plate-like body further includes at least one elongated hole through which a pin is fixed to the bracket. The elongated hole can restrict the movement direction of the plate-like body.

According to the interlocking mechanism as described above, optionally, in a state in which the second cabinet door is closed, the height of the second hole is lower than or equal to the top surface of the second cabinet door.

According to the interlocking mechanism as described above, optionally, the moving member has a triangular portion, a hypotenuse of the triangular portion faces the bracket, the triangular portion is capable of moving in the first hole and the second hole, and during the movement of the second cabinet door from the open position to the closed position, the second cabinet door is capable of moving the moving member in a direction away from the second cabinet door by pushing the hypotenuse, so that the moving member is separated from a clip, and the clip is interlocked with a cover plate of the operation hole of the first chamber. The structure is simpler and the cost is lower.

According to the interlocking mechanism as described above, optionally, the second door is movable between a closed position and an open position, and the second door is capable of moving the plate-like body from the second position to the first position during the movement of the second door from the open position to the closed position.

According to the interlocking mechanism as described above, optionally, the moving direction of the second cabinet door is the same as the moving direction of the plate-like body, and the moving direction of the moving member is perpendicular to the moving direction of the second cabinet door.

According to the linkage mechanism as described above, optionally, the first chamber is an operating mechanism chamber and the second chamber is a cable chamber.

The utility model also provides a switch cabinet, which comprises the interlocking mechanism for the switch cabinet.

Drawings

The above and other features and advantages of the present utility model will become more apparent to those of ordinary skill in the art by describing in detail preferred embodiments thereof with reference to the attached drawings in which:

fig. 1 is a schematic view of a cable chamber in the prior art, wherein a first hole is exposed after a cabinet door of the cable chamber is closed.

Fig. 2 is a schematic structural view of a linkage mechanism for a switchgear according to an embodiment of the present utility model.

Fig. 3 is a schematic view of the interlocking mechanism for the switch cabinet in a first position.

Fig. 4 is a schematic view of a further angle of the interlocking mechanism for the switchgear in the first position.

Fig. 5 is a schematic view of a further angle of the interlocking mechanism for the switchgear in the first position.

Fig. 6 is a schematic view of the interlock mechanism for the switch cabinet in a second position.

Fig. 7 is a schematic structural diagram of the interlocking mechanism of the present utility model for plugging a first hole.

Wherein, the reference numerals are as follows:

11-operating mechanism chamber

12-stent

121-first hole

13-cable chamber cabinet door

21-operating mechanism chamber

22-second cabinet door

23-support

231-first hole

31-plate-like body

311-second hole

312-slot

313-pin

32-elastic member

33-projection

4-moving member

41-oblique side of moving member

42-spring

5-clamping piece

Detailed Description

The present utility model will be further described in detail with reference to the following examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

The switch cabinet generally comprises an air box, an operating mechanism chamber, a low-voltage chamber and a cable chamber, sulfur hexafluoride gas is generally filled in the air box to be used as insulating gas, a circuit breaker and a disconnecting switch are installed in the air box, the operating mechanism of the circuit breaker and the operating mechanism of the disconnecting switch are installed in the operating chamber, an operating hole is formed in a front plate of the operating chamber, a cover plate (not shown in the figure) is covered on the operating hole, the cover plate is interlocked with a moving part in the operating chamber, a cable is installed in the cable chamber, and devices such as an instrument are installed in the low-voltage chamber.

As shown in fig. 1, in the case where the second cabinet door 13 is closed, a portion of the first hole 121 is still exposed. This affects the protection level of the switchgear. The switch cabinet has a complex structure and more parts, so the inventor thinks of a linkage mechanism, and can realize the blocking of the exposed part of the first hole 121 by adopting a simple structure on the basis of not changing the original structure.

As shown in fig. 3 to 7, the present utility model is illustrated by taking the first and second chambers and the bracket 23 between the first and second chambers as an example, the bracket 23 being a plate body. More specifically, the first chamber may be the operating mechanism chamber 21 and the second chamber may be a cable chamber. The first chamber is located above the second chamber, the first chamber having a moving member 4 therein, the second chamber comprising a second door 22, a bracket 23 being located between and connected to the first chamber and the second chamber, the bracket 23 having a first hole 231. The second door 22 is movable in a first direction D and in a direction opposite to the first direction D, and the moving member 4 in the first chamber is movable in the first hole 231 in a direction perpendicular to the first direction D, i.e. in a direction S in fig. 3 and in a direction opposite thereto. As an exemplary illustration, the cover is connected to a clip 5, and if the clip 5 cannot be moved, the cover cannot be moved, and thus the through hole cannot be exposed. The cover plate can not move by the moving member 4 to clamp the clamping member 5. The movement of the moving member 4 can realize the locking of the locking member 5 and the release of the locking member 5, as shown in fig. 3, in the case of releasing the locking member 5, as shown in fig. 6, in the case of locking the locking member 5. The movement of the moving member 4 can be accomplished by the cooperation of the second door 22 and the spring 42.

As shown in fig. 2, the interlocking mechanism of the present utility model includes a plate-like body 31 and an elastic member 32, wherein the plate-like body 31 has a second hole 311, and the plate-like body 31 is movable along a first direction D between a first position where the second hole 311 can overlap with the position of the first hole 231 and the height of the second hole 311 is smaller than the height of the first hole 231, and a second position where the movable member 4 can extend out of the holder 23 or retract into the holder 23 through the first hole 231 and the second hole 311. The elastic member 32 has one end fixed to the plate-like body 31 and the other end fixed to the bracket 23, and the elastic member 32 can apply a pulling force to the plate-like body 31 to hold the plate-like body 31 at the second position without being subjected to an external force.

The plate-like body 31 of the present utility model may be a metal sheet, for example a stainless steel sheet, having a second hole 311. Fig. 3 to 5 and 7 show the plate-like body 31 in the first position, and fig. 6 shows the plate-like body 31 in the second position. When the plate-like body 31 is positioned at the first position, the second hole 311 overlaps the first hole 231. The second hole 311 has a smaller height than the first hole 231 such that, in the case where the second cabinet door 22 is closed, the second hole 311 has a lower height than or equal to the top surface of the second cabinet door 22, such that the gap where the first hole 231 exposes the second cabinet door 22 is completely covered by the plate-like body 31, as shown in fig. 5 and 7. The elastic member 32 may specifically be a spring, and in the case where the plate-like body 31 is located at the first position, the elastic member 32 is stretched, and the plate-like body 31 can be pulled back to the second position shown in fig. 6 by the elastic member 32 without the external force.

According to the utility model, through the interlocking structure, the original first hole 231 on the bracket 23 is blocked by the plate-shaped body 31 under the condition that the cabinet door of the cable chamber is closed, namely, the gap on the bracket 23 can be covered under the condition that the original structure and the interlocking are not changed, the structure is simple, the cost is low, and the safety protection level of the switch cabinet can be ensured.

Optionally, the width of the second hole 311 is also smaller than the width of the first hole 231, so that the tiny objects can be prevented from extending into the second hole 311 from the side surface to damage the equipment therein. As an exemplary illustration, the second hole 311 is in clearance fit with the moving member 4, such that the second hole 311 can accommodate the extension of the moving member 4 without creating an excessive gap, and the protection level of the switch cabinet can be further improved.

Optionally, the interlocking structure of the present utility model further includes a protrusion 33, where the protrusion 33 is fixed to the plate 31 and extends toward a side of the plate 31 away from the bracket 23, and the second door 22 can drive the plate 31 to move toward the first position by the protrusion 33 during the closing process of the second door 22. During the movement of the second door 22, the protruding part 33 can be pushed, and since the protruding part 33 is fixed to the plate-like body 31, the protruding part 33 is carried along and the plate-like body 31 is correspondingly moved. As an exemplary illustration, the cabinet door of the cable chamber is typically a pull-up type, which contacts the protrusion 33 when moving in the first direction D, and pushes the protrusion 33 to move in the first direction, thereby driving the plate-like body 31 to move in the first direction; when the second door 22 moves in a direction opposite to the first direction D, the plate-like body 31 moves in a direction opposite to the first direction due to the elastic member 32, and specifically, the projection 33 moves in a direction opposite to the first direction D together with the second door 22. As a specific example, the protruding portion 33 is an L-shaped plate, one end of which protrudes from a hole of the bracket 23, and the other end of which is fixed to the plate-shaped body 31 by a bolt, and such a split structure facilitates assembly of the interlocking mechanism and is low in cost. The aperture in the bracket 23 also limits the range of movement of the projection 33. The protrusion 33 is used for driving the plate-shaped body 31 to switch between the first position and the second position in the moving process of the second cabinet door 22, so that the structure is simple and the cost is low. In addition, it can be seen in fig. 5 that the second door 22 is also provided with an opening for cooperation with the projection 33, i.e. the top of the opening is in direct contact with the projection 33 for depressing the projection 33 in the first direction D.

Optionally, the plate-like body 31 of the present utility model further includes at least one elongated hole 312, and a pin 313 is fixed to the bracket 23 through the elongated hole 312, the elongated hole 312 being capable of restricting the moving direction of the plate-like body 31. As shown in fig. 4, the plate-like body 31 has two elongated holes 312 and correspondingly two pins 313, and the elongated holes 312 can serve as a stopper, i.e., limit the range of movement of the plate-like body 31 in the first direction D. Specifically, the range of movement of the interlocking mechanism is limited by the hole on the bracket 23 or the range of movement of the interlocking mechanism is limited by the long hole 312 on the plate-shaped body 31, and the movement range can be selected according to actual needs.

Alternatively, the moving member 4 has a triangular portion, the hypotenuse 41 of which faces the support 23, and the triangular portion can extend from the first hole 231 and the second hole 311 out of the support 23 or retract into the support 23. In the process that the inclined edge 41 of the triangular part faces the bracket 23 and the second cabinet door 22 moves towards the first direction D, the moving member 4 can be retracted by pushing the inclined edge 41, namely, the moving member moves towards a direction far away from the second cabinet door 22, namely, moves along the S direction, so that the second cabinet door 22 is separated from the clamping member 5, the clamping member 5 is linked with the cover plate of the operation hole of the first chamber, the moving member 4 is further released from the interlocking, and the cover plate above the operation hole can be opened to expose the operation hole. In addition, when the second door 22 moves in a direction opposite to the first direction D, the moving member 4 moves in a direction opposite to the S direction due to the spring 42, and thus the clip 5 is caught, that is, moves to the position shown in fig. 6. The structure is simpler and the cost is lower.

The utility model also provides a switch cabinet, which comprises any interlocking mechanism for the switch cabinet.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. Interlocking mechanism for a switchgear cabinet, said switchgear cabinet comprising a first chamber, a second chamber and a support (23), said first chamber being located above said second chamber, said first chamber having a moving member (4) therein, said second chamber comprising a second door (22), said support (23) being located between said first chamber and said second chamber, said support (23) having a first aperture (231);

the interlocking mechanism is characterized by comprising:

-a plate-like body (31), said plate-like body (31) having a second hole (311), said plate-like body (31) being movable along a first direction between a first position in which said second hole (311) is capable of overlapping the position of said first hole (231) and in which the height of said second hole (311) is smaller than the height of said first hole (231), said moving member (4) being capable of moving in said first hole (231) and said second hole (311);

an elastic member (32), one end of the elastic member (32) is fixed to the plate-shaped body (31), the other end is fixed to the bracket (23), and the elastic member (32) can apply a pulling force to the plate-shaped body (31) to keep the plate-shaped body (31) at the second position without being subjected to external force.

2. The interlocking mechanism according to claim 1, characterized in that the width of the second hole (311) is smaller than the width of the first hole (231) or the second hole (311) is in clearance fit with the moving member (4).

3. The linkage mechanism of claim 1, further comprising:

and the protruding part (33) is fixed on the plate-shaped body (31) and extends towards one side of the plate-shaped body (31) away from the bracket (23), and the second cabinet door (22) can drive the plate-shaped body (31) to move towards the first position through the protruding part (33) in the process of closing the second cabinet door (22).

4. The interlocking mechanism according to claim 1, wherein the plate-like body (31) further comprises:

at least one slot (312), through which slot (312) a pin (313) is fastened to the support (23).

5. The interlocking mechanism according to claim 1, characterized in that in the closed state of the second door (22), the height of the second hole (311) is lower than or equal to the top surface of the second door (22).

6. Interlocking mechanism according to claim 1, characterized in that the moving member (4) has a triangular part, the sloping side (41) of which faces the bracket (23), the triangular part being movable in the first hole (231) and the second hole (311), the second door (22) being movable away from the second door (22) by pushing the sloping side (41) during movement of the second door (22) from an open position to a closed position, so that the moving member (4) is disengaged from a catch (5), the catch (5) being interlocked with the cover of the operating aperture of the first chamber.

7. Interlocking mechanism according to claim 1, characterized in that the second door (22) is movable between a closed position and an open position, the second door (22) being able to bring the plate-like body (31) from the second position to the first position during the movement of the second door (22) from the open position to the closed position.

8. Interlocking mechanism according to claim 1, characterized in that the movement direction of the second door (22) is the same as the movement direction of the plate-like body (31), the movement direction of the moving member (4) being perpendicular to the movement direction of the second door (22).

9. Linkage according to any one of claims 1-8, characterized in that the first chamber is an operating mechanism chamber (21) and the second chamber is a cable chamber.

10. A switchgear characterized in that it comprises a linkage mechanism for a switchgear according to any of claims 1-9.