CN110323692B

CN110323692B - Interlocking mechanism of switch cabinet and switch cabinet

Info

Publication number: CN110323692B
Application number: CN201910715473.2A
Authority: CN
Inventors: 朱小强; 唐军; 邱正平
Original assignee: Siemens Switchgear Ltd
Current assignee: Siemens Switchgear Ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-09-15
Anticipated expiration: 2039-08-05
Also published as: CN110323692A

Abstract

The interlocking mechanism of the switch cabinet comprises a base body (10), a linkage piece (20), an elastic piece (30), a locking piece (40) and an actuating piece (50). The linkage is movable relative to the base in a first direction (D1) to a first position, a second position, and a third position in sequence. The elastic member can drive the linkage member to move along the first direction. The locking element and the actuating element are movably connected to the base body. The linkage piece located at the third position can abut against the locking piece, so that the cabinet door is locked in a locked state. In the process that the electrical equipment of the switch cabinet moves from the working position to the testing position, the electrical equipment can drive the actuating part to move, so that the actuating part can push the linkage part from the third position to the second position. Under the condition that the linkage piece is located at the second position, the locking piece can push the linkage piece to the first position from the second position so as to unlock the cabinet door. The interlocking mechanism is simple in structure. In addition, a switch cabinet comprising the same is also provided.

Description

Interlocking mechanism of switch cabinet and switch cabinet

Technical Field

The invention relates to an interlocking mechanism, in particular to an interlocking mechanism of a switch cabinet and the switch cabinet comprising the same.

Background

The switch cabinet includes electrical equipment, such as a circuit breaker, a voltage transformer, etc., mounted on the chassis. The electrical device is movable between a testing position and an operating position. In order to avoid an operator from inadvertently opening the door of the switchgear cabinet when the electrical apparatus is in the operating position, an interlocking mechanism is often used. The interlocking mechanism used at present is complex in structure and not easy to install and maintain.

Disclosure of Invention

The invention aims to provide an interlocking mechanism of a switch cabinet, which has a simple structure and is easy to install and maintain.

Another object of the present invention is to provide a switchgear cabinet, the interlocking mechanism of which is simple in structure and easy to install and maintain.

The invention provides an interlocking mechanism of a switch cabinet, which comprises a base body, a linkage piece, an elastic piece, a locking piece and an actuating piece. The linkage is movably connected to the base and is capable of moving in a first direction to a first position, a second position, and a third position in sequence. The elastic member can drive the linkage member to move along the first direction. The locking element is movably connected to the base body for locking and unlocking a door of the switchgear cabinet. The actuator is movably connected to the base. Wherein the linkage piece that is located this third position can lean on in the direction of motion of locking piece and lock the piece to with the cabinet door locking in the state of being blocked. In the process that one electrical equipment of the switch cabinet moves from the working position to the test position, the electrical equipment can drive the executing piece to move, and then the executing piece can push the linkage piece to enable the linkage piece to move from the third position to the second position. Under the condition that the linkage piece is located this second position, the locking piece can support and push the linkage piece so that the linkage piece moves to this first position from this second position, and under the condition that the linkage piece is located this first position, the cabinet door unblock.

When this interlocking device is applied to the cubical switchboard, can avoid opening the cabinet door of cubical switchboard when electrical equipment is in operating position to improve the security. The interlocking mechanism is simple in structure, low in cost and easy to install and maintain.

In a further exemplary embodiment of the interlocking mechanism of the switchgear cabinet, the direction of movement of the locking means and of the actuating element relative to the base body is perpendicular to the first direction, whereby the construction is more compact and easier to assemble.

In a further exemplary embodiment of the interlocking mechanism of the switchgear cabinet, the locking part abuts against the linkage part via an inclined surface of the linkage part; and/or the actuating member abuts against the link member through another inclined surface of the link member. The structure is simple and easy to process.

In a further exemplary embodiment of the interlocking mechanism of the switchgear cabinet, the interlocking mechanism further comprises a device abutment and a first return spring. The device abutment is rotatably connected to the base. The rotation that equipment leaned on the piece can drive the execution piece and move. The first return spring can drive the executive component to return. In the process that the electrical equipment moves from the working position to the testing position, the electrical equipment can enable the equipment abutting piece to rotate by abutting against the equipment abutting piece, and then the actuating piece is driven to move by overcoming the elastic restoring force of the first return spring. The structure is simple, and the stability is good.

In a further exemplary embodiment of the interlocking mechanism of the switchgear cabinet, the actuating element has a linkage hole, through which the device abutment element is arranged in order to drive the actuating element to move through the linkage hole. The structure is simple, and the stability is good.

In a further exemplary embodiment of the interlocking mechanism of the switchgear cabinet, the first restoring spring is mounted on the actuator. The structure is easy to assemble.

In a further exemplary embodiment of the interlocking mechanism of the switchgear cabinet, the linkage also has an abutment. When the linkage piece is located at the first position and the equipment abutting piece is located at the position before the equipment is abutted by the electric equipment, the execution piece can abut against the abutting part to prevent the linkage piece from moving along the first direction. The abutting part can be disengaged in the process of moving the executing part, so that the linkage part can move along the first direction. Borrow this and do not have electrical equipment and under the condition that the cabinet door was closed in the cubical switchboard, can avoid the linkage piece to follow up the motion of locking piece to avoid unnecessary wearing and tearing, improve life.

In a further exemplary embodiment of the interlocking mechanism of the switchgear cabinet, the interlocking mechanism further comprises a screen which is movably connected to the base body, the screen being used to screen a rocker opening of a chassis which is used to drive the electrical device between the operating position and the test position. Under the condition that the locking piece is located the position of unblock cabinet door, the baffle is locked in the position that shelters from the rocker hole. Therefore, the electric equipment can be prevented from being moved under the condition that the cabinet door is not locked, and the safety performance is improved.

In a further exemplary embodiment of the interlocking mechanism of the switchgear cabinet, the flap has a sliding opening. The sliding hole is provided with a first hole section and a second hole section which are communicated with each other, the extending direction of the first hole section is parallel to the moving direction of the locking piece, and the extending direction of the second hole section is parallel to the moving direction of the baffle plate. A stop pin of the locking piece is slidably arranged in the sliding hole in a penetrating way. Under the condition that the lock-stopping piece is located the position that is used for shutting the cabinet door, the second hole section is worn to locate by the backstop round pin, and the baffle can move in order to dodge the rocking bar hole. Under the condition that the locking piece is located the position that is used for unblock cabinet door, the backstop round pin is worn to locate first hole section to prevent the baffle motion. The structure is simple, the stability is good and the processing is convenient.

In a further exemplary embodiment of the interlocking mechanism of the switchgear cabinet, the locking element comprises a body and a stop pin. The body is movably connected to the base. The stop pin is detachably connected to the body. The locking piece abuts against the linkage piece through the stop pin. Borrow this, the accessible is pulled down the backstop round pin from the body and is opened the cabinet door by force, improves the flexibility of using.

In a further exemplary embodiment of the interlocking mechanism of the switchgear cabinet, the base body serves for the fixed connection of the cabinet doors. The locking piece has a card hole, and it has a third hole section and a fourth hole section that link up each other in the direction of motion of locking piece, and the aperture of fourth hole section is greater than the aperture of third hole section. The interlocking mechanism further comprises a limiting piece, a second return spring and a pressing rod. The limiting piece is movably connected with the base body. Under the condition that the locking piece is located the position of unblock cabinet door, the locating part can penetrate or withdraw from fourth hole section. Under the condition that the limiting piece penetrates into the fourth hole section, the limiting piece can abut against the junction of the third hole section and the fourth hole section, and therefore the cabinet door is locked in an unlocked state. The second return spring can drive the limiting piece to penetrate into the fourth hole section. The compression bar is used for fixedly connecting the cabinet body of the switch cabinet. When the cabinet door is in a closed state, the pressing rod can push the limiting part to withdraw from the fourth hole section, and the pressing rod can slide in the third hole section and the fourth hole section. This structure makes the cabinet door can't remove when not closing and ends the latch fitting to avoid the cabinet door to close under the untight condition and remove and end the latch fitting and the cabinet door that arouses has been acknowledged by the mistake of shutting.

In a further exemplary embodiment of the interlocking mechanism of the switchgear cabinet, the locking element also has a locking opening. The locking hole is provided with a fifth hole section and a sixth hole section which are communicated with each other, and the aperture of the sixth hole section is larger than that of the fifth hole section. The interlocking mechanism further comprises a locking piece which is used for fixedly connecting the cabinet body. The locking element comprises a locking portion. The locking portion can pass through the sixth hole section during opening and closing of the cabinet door. When the cabinet door is in the closed condition, the closure member can reach the fifth hole section through the motion of locking piece to lean on locking piece and come to lock the cabinet door in the state of being blocked through the closure portion. The structure is simple, and the stability is good.

The invention also provides a switch cabinet, which comprises the interlocking mechanism. This cubical switchboard can avoid opening the cabinet door of cubical switchboard when electrical equipment is in operating position to improve the security. The interlocking mechanism of the switch cabinet has a simple structure, so that the cost is low and the installation and maintenance are easy.

Drawings

The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.

Fig. 1 is a schematic structural view of an exemplary embodiment of an interlock mechanism of a switchgear.

Fig. 2 and 3 are state diagrams of changes of the interlock mechanism shown in fig. 1.

Fig. 4 is a schematic perspective view of the actuator and the device engaging member shown in fig. 1.

Fig. 5 is a partial schematic view for explaining the interlock mechanism shown in fig. 1.

Fig. 6 to 8 are diagrams for explaining a variation of the structure shown in fig. 5.

Fig. 9 is a schematic structural view of another exemplary embodiment of an interlock mechanism of a switchgear.

Fig. 10 is a state diagram of a variation of the interlock mechanism of the switchgear shown in fig. 9.

Fig. 11 is a schematic structural view of yet another exemplary embodiment of an interlock mechanism for a switchgear.

Description of the reference symbols

10 base body

11 first support part

12 second support part

13 casing

20 linkage member

21 first sliding part

213 first inclined plane

22 second sliding part

223 second inclined plane

25 abutting part

30 elastic member

40 locking piece

41 body

42 stop pin

43 hole for fastening

433 third bore section

434 fourth hole segment

45 locking hole

455 fifth hole section

456 sixth hole section

50 executive component

51 linkage hole

60 device abutment

71 first return spring

72 second return spring

80 baffle

81 slide hole

811 first bore section

812 second hole section

91 position limiting part

92 pressure bar

93 locking piece

931 locking part

932 locking rod

300 cabinet body

D1 first direction

D2 second direction

Third direction D3

D4 fourth direction

Detailed Description

In order to more clearly understand the technical features, objects and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals indicate the same or structurally similar but functionally identical elements.

"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.

In this document, "first", "second", etc. do not mean their importance or order, etc., but merely mean that they are distinguished from each other so as to facilitate the description of the document.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product.

Fig. 1 to 3 are schematic structural views of an exemplary embodiment of an interlock mechanism of a switchgear cabinet, wherein fig. 1, 2 and 3 each show different states of change. As shown in fig. 1 to 3, the interlocking mechanism of the switchgear includes a base 10, a link 20, an elastic member 30, a locking member 40, and an actuating member 50.

The base 10 may be adapted to be secured to the inside of a cabinet door to form an interlock between the cabinet door and an electrical appliance. The base 10 may also be part of a cabinet door.

The linkage member 20 is slidably coupled to the base 10 in a first direction D1 and a second direction opposite the first direction D1, and is movable from a first position (shown in fig. 3) to a second position (shown in fig. 2) and a third position (shown in fig. 1) in sequence. The elastic member 30 can drive the link member 20 to move along the first direction D1. In the present exemplary embodiment, the elastic member 30 is a tension spring, and one end thereof is connected to the link 20 and the other end thereof is connected to the base 10. For example, the elastic member 30 is connected to a fixed member at one end and connected to the link member 20 at the other end, and can pull the link member 20 to move in the first direction D1 without any resistance applied to the link member 20. That is, with the link 20 in the first position, the elastic member 30 is stretched. The structure of the elastic member 30 is not limited thereto, and in other exemplary embodiments, the elastic member 30 may also be other structures capable of providing an elastic restoring force.

The locking element 40 is slidably connected to the base body 10 in a second direction D2 and in the opposite direction to lock and unlock the door of the switchgear cabinet. The locking element 40 can lock and unlock a door of the switchgear cabinet from the inside of the door, and the operator can manually actuate the locking element 40, for example by actuating the locking element 40 by means of a handle on the outside of the cabinet door, which handle is connected to the locking element 40. Specifically, when the locking member 40 slides to the position shown in fig. 3, the cabinet door is in an unlocked state, that is, the cabinet door can be freely opened and closed in the cabinet body; when the locking member 40 slides to the state shown in fig. 1 or fig. 2, the cabinet door is in a locked state, i.e. the cabinet door cannot be opened from the cabinet body. How locking member 40 locks the cabinet door and unlocks the cabinet door specifically can select according to actual need, and is not repeated here.

The actuator 50 is slidably coupled to a first supporting portion 11 of the base 10 in a third direction D3 and in a reverse direction thereof. During the movement of the electrical device of the switch cabinet from the operating position to the test position, the electrical device can drive the actuator 50 to move in the third direction D3. The actuator 50 may be driven by the electrical device directly or indirectly, for example, by other structures to drive the actuator 50.

In the present exemplary embodiment, the second direction D2 and the third direction D3 may be parallel to each other and perpendicular to the first direction D1, thereby making the structure more compact and easy to assemble. But not limited thereto, in other exemplary embodiments, the relative movement directions of the linkage 20, the locker 40 and the actuating member 50 may be adjusted as desired. It should be noted that the above-mentioned parallel relationship or perpendicular relationship can be adjusted within a certain error range.

As shown in fig. 1, the linkage 20 in the third position can abut against the locking member 40 in the movement direction of the locking member 40, thereby locking the cabinet door in the locked state. At this time, the electrical equipment of the switch cabinet is located at the working position, and the switch cabinet is far away from the cabinet door. In the process that the electrical equipment of the switch cabinet moves from the working position to the testing position, the electrical equipment gradually approaches the cabinet door, and then the electrical equipment can drive the actuating element 50 to move along the third direction D3, and meanwhile, the actuating element 50 can push the linkage element 20 from the third position to the second position shown in fig. 2 by pushing against the linkage element 20, and specifically, the actuating element 50 can push against one second sliding portion 22 of the linkage element 20. As shown in fig. 2, with the linkage 20 located at the second position, the locking member 40 can move in the direction opposite to the second direction D2, and can specifically push against a first sliding portion 21 of the linkage 20 by pushing against the linkage 20 to push the linkage 20 from the second position to the first position shown in fig. 3, and simultaneously unlock the cabinet door. Under the state of cabinet door unblock, the electrical equipment of cubical switchboard is located experimental position.

In the present exemplary embodiment, the interlock mechanism further includes a device abutment 60 and a first return spring 71. The device abutment 60 is rotatably connected to a second support 12 of the base body 10, the axis of rotation of which may be parallel to the first direction D1, for example, the dash-dot line shown in fig. 4, the direction of movement being indicated by the arrow shown in fig. 4. During the movement of the electrical equipment from the working position to the testing position, the electrical equipment can rotate the equipment abutting piece 60 by abutting against the equipment abutting piece 60, and then drive the actuator 50 to move by overcoming the elastic restoring force of the first return spring 71. For example, as shown in fig. 4, the actuating member 50 has a linkage hole 51, and the device abutting member 60 is movably disposed through the linkage hole 51. The electrical device can drive the actuator 50 to move by abutting the device abutment 60 and thereby rotating the device abutment 60. The first return spring 71 can drive the actuator 50 to move, and the electric appliance needs to drive the actuator 50 to move against the elastic restoring force of the first return spring 71. Specifically, the first return spring 71 may be sleeved on the actuating member 50, and when the device abutting member 60 rotates in the direction shown in fig. 4, the link member 50 moves in the third direction D3, and the first return spring 71 is compressed. The structure is simple, and the stability is good. However, in other exemplary embodiments, the transmission between the electrical device and the actuator 50 may be realized by other structures.

An example of the use of the interlocking mechanism in a switchgear cabinet is schematically described below.

When the interlocking mechanism is applied to a switch cabinet, the base body 10 can be fixed on the inner side of the cabinet door, but the base body 10 can also be a part of the cabinet door. The first direction D1 and the second direction D2 are perpendicular to the moving direction of the electrical equipment (i.e. the moving direction of the electrical equipment when switching between the testing position and the working position) when the cabinet door is closed, but not limited thereto. The operation of the interlocking mechanism is as follows:

1. initially, the cabinet door of the switch cabinet is opened, the electrical equipment is in the test position, the interlocking mechanism is in the state shown in fig. 3, the linkage member 20 is stopped at the first position by the locking member 40, and at this time, the cabinet door is in the unlocked state and can be freely opened or closed from the cabinet body; the elastic member 30 is in a stretched position.

2. Then the cabinet door is closed, and the electrical equipment in the test position gradually pushes against the equipment abutting piece 60 to rotate in the closing process, so that the actuating piece 50 is driven to move to the position shown in fig. 2 along the third direction D3, and the first return spring 71 is gradually compressed;

3. an operator can manually drive the locking piece 40 to slide to the position shown in fig. 2 along the second direction D2 to lock the cabinet door in the locked state (i.e. the cabinet door cannot be opened), and at the same time, the linkage piece 20 slides to the second position shown in fig. 2 along the first direction D1 under the action of the elastic piece 30 due to the loss of the abutting of the locking piece 40, and the linkage piece 20 is stopped at the second position by the actuating piece 50;

4. the operator can move the electrical equipment from the test position to the working position, and the electrical equipment can be moved by the chassis truck. During the movement of the electrical apparatus, the apparatus abutting member 60 gradually loses the abutting of the electrical apparatus against it, the actuating member 50 moves to the position shown in fig. 1 (i.e. returns to the position shown in fig. 3) in the opposite direction of the third direction D3 under the action of the first return spring 71, and the link member 20 continues to slide to the third position shown in fig. 1 in the first direction D1 under the action of the elastic member 30 due to the loss of the abutting of the actuating member 50 against it; the linkage 20 at the third position abuts against the locking member 40 in the second direction D2, so as to lock the cabinet door in a locked state and cannot be opened;

5. when the cabinet door needs to be opened, firstly, the electrical equipment is moved from the working position to the test position, in the process, the electrical equipment gradually abuts against the equipment abutting piece 60, the equipment abutting piece 60 further rotates to gradually drive the executing piece 50 to move to the position shown in fig. 2 along the third direction D3, and the first return spring 71 is gradually compressed; in this process, the actuator 50 pushes the link 20 from the third position shown in fig. 1 to the second position shown in fig. 2 by pushing against the second sliding portion 22 of the link 20; then the locking piece 40 is manually driven to slide along the direction opposite to the second direction D2 to the position shown in fig. 3, the process-stopping locking piece 40 pushes the linkage 20 from the second position shown in fig. 2 to the first position shown in fig. 3 by pushing against the first sliding part 21 of the linkage 20, and the elastic piece 30 is stretched; with the locking member 40 returned to the position shown in fig. 3, the cabinet door is unlocked.

After the cabinet door is unlocked, if the cabinet door is opened, the equipment abutting piece 60 loses the abutting of the electrical equipment, and then is reset under the action of the first reset spring 71, and meanwhile, the executing piece 50 is also reset to the position shown in fig. 3.

Fig. 5 is a partial schematic view illustrating the interlocking mechanism shown in fig. 1, in which structures other than the base body 10 and the locking member 40 are not shown in fig. 1 to 3. Fig. 6 is a partial cross-sectional view of the structure shown in fig. 5. As shown in fig. 5 and 6, in the present exemplary embodiment, the locking member 40 has a locking hole 43, the locking hole 43 has a third hole section 433 and a fourth hole section 434 penetrating each other in the second direction D2, and the hole diameter of the fourth hole section 434 is larger than that of the third hole section 433. The third and

fourth hole segments

433 and 434 may be sequentially arranged along the second direction D2.

The interlocking mechanism may further include a limit stop 91, a second return spring 72, and a plunger 92. The stopper 91 is movably connected to the base 10, and the movement direction of the stopper 91 is the horizontal direction in fig. 6. The horizontal direction is, for example, perpendicular to the first direction D1 and the second direction D2. As shown in fig. 5 and 6, the stopper 91 can penetrate into or withdraw from the fourth hole segment 434 when the locking member 40 is located at the position for unlocking the cabinet door. In case the stop 91 penetrates the fourth hole segment 434, it can abut against the junction of the third hole segment 433 and the fourth hole segment 434, thereby locking the cabinet door in the unlocked state.

The second return spring 72 can drive the limiting member 91 to penetrate into the fourth hole segment 434. The pressure lever 92 is used for fixedly connecting the cabinet body 300 of the switch cabinet. As shown in fig. 7, when the cabinet door is in a closed state, the pressing rod 92 can push the limiting member 91 to exit from the fourth hole segment 434, the pressing rod 92 can slide in the third hole segment 433 and the fourth hole segment 434, and at this time, the locking member 40 can slide along the second direction D2 to the position shown in fig. 8, so as to lock the cabinet door. This structure makes the cabinet door can't remove when not closing and ends locking piece 40 to avoid the cabinet door to close and remove under the untight condition and end locking piece 40 and think by mistake that the cabinet door has been blocked. Thus, the cabinet door can be ensured to be closed in place.

As shown in fig. 5 to 6, the base 10 has a housing 13, the housing 13 has an opening in a direction toward the cabinet 300, the second return spring 72 is located in the housing 13, the limiting member 91 is at least partially located in the housing 13, and the limiting member 91 can extend from the opening. Alternatively, the press rod 92 may extend from the opening into the housing 13, so that the stopper 91 is pressed into the housing 13.

As shown in fig. 5 and 6, in an exemplary embodiment, the locking member 40 may further have a locking hole 45. The locking hole 45 has a fifth hole segment 455 and a sixth hole segment 456 that are connected to each other along the second direction D2, and the hole diameter of the sixth hole segment 456 is larger than that of the fifth hole segment 455. The fifth and

sixth hole segments

455 and 456 may be sequentially arranged along the second direction D2. The interlocking mechanism also includes a latch 93 fixedly attached to the cabinet 300. The locking member 93 includes a locking portion 931 and a locking rod 932, and the locking portion 931 is fixed to the locking rod 932. The locking portion 931 can pass through the sixth hole section 456 during the opening and closing of the cabinet door. The diameter of the locking portion 931 is larger than the diameter of the fifth hole segment 455, and the diameter of the locking rod 932 is smaller than the diameters of the fifth hole segment 455 and the sixth hole segment 456, i.e., the locking rod 932 is movable in the fifth hole segment 455 and the sixth hole segment 456. As shown in fig. 7 and 8, when the cabinet door is in the closed state, the locking member 93 can reach the fifth hole section 455 by the movement of the locking member 40 to lock the cabinet door in the locked state by the locking portion 931 abutting against the locking member 40. That is, when the locking member 40 moves in the second direction D2, the locking rod 932 is located in the fifth hole section 455, and the locking portion 931 cannot pass through the fifth hole section 455, so that the cabinet door can be prevented from being opened. The structure is simple, and the stability is good.

In the illustrated embodiment, the lock stopper 40 abuts against one inclined surface of the first sliding portion 21. By means of the inclined surface, the movement of the locking member 40 can also bring about the movement of the link member 20. Optionally, the actuating member 50 also abuts against an inclined surface of the second sliding portion 22. Thus, the movement of the actuator 50 can also move the linkage 20 through the inclined surface. The structure is simple and easy to machine, but is not limited to this, and in other exemplary embodiments, the inclined surface may be replaced with a curved surface.

In the illustrated embodiment, the locking member 40 includes a body 41 and a stop pin 42. The body 41 is movably connected to the base 10. The stopper pin 42 detachably fixes the connecting body 41. The latch 40 abuts the link 20 via a stop pin 42. Thereby, the door can be forcibly opened by detaching the stopper pin 42 from the body 41, improving the flexibility of use. Fig. 9 is a schematic structural view of another exemplary embodiment of an interlock mechanism of a switchgear. The interlocking mechanism is the same as or similar to the interlocking mechanism shown in fig. 1, and is not described herein again, except that: the interlocking mechanism further includes a shutter 80 slidably coupled to the substrate 10 in a fourth direction D4 and in a reverse direction. In the present exemplary embodiment, the fourth direction D4 is parallel to the first direction D1, but is not limited thereto. The shield 80 is used to shield a rocker hole of a chassis. When the electrical equipment is installed on the chassis vehicle in the switch cabinet, the rocker can be inserted into the chassis vehicle to rotate, so that the electrical equipment can be switched between a test position and a working position. The cabinet door is provided with a corresponding rocker hole so that the rocker can penetrate through the cabinet door and be inserted into the chassis vehicle. In the case where the locking member 40 is located at a position to unlock the cabinet door, the barrier 80 is locked at a position to shield the rocker hole, and in this case, the rocker cannot pass through the rocker hole to change the position of the electric appliance.

The baffle 80 has a slide hole 81. The slide hole 81 has a first hole section 811 and a second hole section 812, the first hole section 811 extending in parallel to the moving direction of the locking member 40, and the second hole section 812 extending in parallel to the moving direction of the shutter 80. The stopper pin 42 is slidably disposed through the slide hole 81. Fig. 10 is a state diagram of the interlocking mechanism of the switch cabinet shown in fig. 9, in which, as shown in fig. 10, the stop pin 42 is inserted into the second hole section 812 in the condition that the locking member 40 is located at the position for locking the cabinet door, and the blocking plate 80 can be manually moved to open the rocker hole, allowing the rocker to drive the electrical equipment to move. As shown in fig. 9, in a state that the locking member 40 is located at a position for unlocking the cabinet door, the stopper pin 42 is inserted into the first hole section 811 to prevent the movement of the barrier 80, and at this time, the rocker hole is closed by the barrier 80, and the electric appliance cannot be moved. Therefore, the electric equipment can be prevented from being moved under the condition that the cabinet door is not locked, and the safety performance is improved.

Fig. 11 is a schematic structural view of yet another exemplary embodiment of an interlock mechanism for a switchgear. The interlocking mechanism is the same as or similar to the interlocking mechanism shown in fig. 1, and is not described herein again, except that: the link 20 also has an abutment 25. With the linkage 20 in the first position and the device abutting member 60 in the position not abutted by the electrical device, the actuating member 50 can abut against the abutting portion 25 to prevent the linkage 20 from moving in the first direction D1. Therefore, under the condition that no electrical equipment exists in the switch cabinet and the cabinet door is closed, the linkage piece 20 can be prevented from moving along with the locking piece 40, unnecessary abrasion is avoided, and the service life is prolonged. When the switch cabinet has the electrical equipment in the test position, the electrical equipment gradually pushes the equipment abutting piece 60 to rotate during the closing process of the cabinet door, so that the actuating piece 50 is driven to move along the third direction D3 and is disengaged from the abutting part 25, and the linkage piece 20 can move along the first direction D1.

The invention also provides a switchgear which, in an exemplary embodiment thereof, may comprise any of the interlocking mechanisms described above. The base body 10 of the interlocking device is fixedly connected to the door of the switchgear cabinet. This cubical switchboard can avoid opening the cabinet door of cubical switchboard when electrical equipment is in operating position to improve the security. The interlocking mechanism of the switch cabinet has a simple structure, so that the cost is low and the installation and maintenance are easy.

It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications such as combinations, divisions or repetitions of features, which do not depart from the technical spirit of the present invention, should be included in the scope of the present invention.

Claims

1. Interlocking mechanism of cubical switchboard characterized in that includes:

a base (10);

a linkage (20) movably connected to the base (10) and movable in a first direction (D1) to a first position, a second position and a third position in succession;

-an elastic member (30) able to drive said linkage member (20) in the first direction (D1);

a locking element (40) which is movably connected to the base body (10) for locking and unlocking a door of the switchgear cabinet; and

an actuator (50) movably connected to the base body (10);

wherein the linkage (20) in the third position can abut against the locking piece (40) in the movement direction of the locking piece (40) so as to lock the cabinet door in the locked state; in the process that an electrical device of the switch cabinet moves from a working position to a test position, the electrical device can drive the actuating part (50) to move, and then the actuating part (50) can push the linkage part (20) to enable the linkage part (20) to move from the third position to the second position; when the linkage piece (20) is located at the second position, the locking piece (40) can push the linkage piece (20) to move the linkage piece (20) from the second position to the first position, and when the linkage piece (20) is located at the first position, the cabinet door is unlocked.

2. The interlocking mechanism of a switch cabinet according to claim 1, characterized in that the direction of movement of the locking element (40) and the actuating element (50) relative to the base body (10) is perpendicular to the first direction (D1).

3. The interlocking mechanism of a switchgear cabinet according to claim 1, characterized in that the locking piece (40) abuts against the linkage piece (20) by means of an inclined surface of the linkage piece (20); and/or

The actuating element (50) abuts against the linkage element (20) via a further inclined surface of the linkage element (20).

4. The interlock mechanism for a switchgear cabinet according to any one of claims 1 to 3, wherein said interlock mechanism further comprises: a device abutting piece (60) which is rotatably connected with the base body (10), wherein the actuator (50) can be driven to move by the rotation of the device abutting piece (60); and

a first return spring (71) capable of driving the actuator (50) to return;

during the process that the electric equipment moves from the working position to the testing position, the electric equipment can enable the equipment abutting piece (60) to rotate by abutting against the equipment abutting piece (60), and then the actuating piece (50) is driven to move by overcoming the elastic restoring force of the first return spring (71).

5. The interlocking mechanism of a switch cabinet according to claim 4, characterized in that the actuating member (50) has a linkage hole (51), and the equipment abutting member (60) is inserted into the linkage hole (51) to move the actuating member (50) through the linkage hole (51).

6. The interlocking mechanism of a switchgear cabinet according to claim 4, characterized in that the first return spring (71) is mounted on the actuator (50).

7. The interlocking mechanism of a switchgear cabinet according to claim 4, characterized in that the linkage (20) further has an abutment (25);

with the linkage (20) in the first position and the device abutment (60) in a position before abutment by the electrical device, the actuator (50) can abut against the abutment (25) to prevent movement of the linkage (20) in the first direction (D1); can disengage the abutment (25) during the movement of the actuator (50) to enable the movement of the linkage (20) in the first direction (D1).

8. Interlocking mechanism for a switchgear cabinet according to any of the claims 1-3, characterized in that it further comprises a shutter (80) movably connected to said base body (10), said shutter (80) being adapted to block a rocker hole of a chassis adapted to drive said electrical equipment between the operating position and the test position; the shutter (80) is locked in a position to block the rocker hole in a state where the locking member (40) is located at a position to unlock the cabinet door.

9. The interlocking mechanism of a switchgear cabinet according to claim 8, characterized in that said shutter (80) has a sliding hole (81); the sliding hole (81) is provided with a first hole section (811) and a second hole section (812) which are communicated with each other, the extending direction of the first hole section (811) is parallel to the moving direction of the locking piece (40), and the extending direction of the second hole section (812) is parallel to the moving direction of the baffle plate (80); a stop pin (42) of the locking piece (40) is slidably arranged in the sliding hole (81) in a penetrating way;

the stop pin (42) is arranged through the second hole section (812) under the condition that the locking piece (40) is located at the position for locking the cabinet door, and the baffle plate (80) can move to avoid the rocker hole; in the case where the locking member (40) is located at a position for unlocking the cabinet door, the stopper pin (42) is inserted through the first hole section (811) to prevent the movement of the shutter (80).

10. Interlocking mechanism for a switchgear cabinet according to one of claims 1 to 3, characterized in that the locking element (40) comprises: a body (41) movably connected to said base body (10); and

a stop pin (42) removably connected to said body (41); the locking element (40) rests against the linkage element (20) via the stop pin (42).

11. Interlocking mechanism for a switchgear cabinet according to one of the claims 1 to 3, characterized in that the base body (10) is intended for the fixed connection of the cabinet door; the locking element (40) has a latching bore (43) which has a third bore section (433) and a fourth bore section (434) which are connected to one another in the direction of movement of the locking element (40), the bore diameter of the fourth bore section (434) being greater than the bore diameter of the third bore section (433);

the interlocking mechanism further comprises:

a stop member (91) movably connected to the base body (10); the limiting piece (91) can penetrate into or withdraw from the fourth hole section (434) under the condition that the locking piece (40) is positioned at the position for unlocking the cabinet door; under the condition that the limiting piece (91) penetrates into the fourth hole section (434), the limiting piece can abut against the junction of the third hole section (433) and the fourth hole section (434), so that the cabinet door is locked in an unlocked state;

a second return spring (72) capable of driving the stop member (91) to penetrate the fourth hole segment (434); and

a pressure lever (92) for fixedly connecting the cabinet body (300) of the switch cabinet;

when the cabinet door is in a closed state, the pressing rod (92) can push the limiting piece (91) to exit from the fourth hole section (434), and the pressing rod (92) can slide in the third hole section (433) and the fourth hole section (434).

12. Interlocking mechanism for a switchgear cabinet according to one of the claims 1 to 3,

the locking piece (40) is also provided with a locking hole (45); the locking hole (45) is provided with a fifth hole section (455) and a sixth hole section (456) which are communicated with each other, and the aperture of the sixth hole section (456) is larger than that of the fifth hole section (455);

the interlocking mechanism further comprises a locking piece (93) which is used for fixedly connecting the cabinet body (300) of the switch cabinet; said locking element (93) comprising a locking portion (931); the latch (931) being capable of passing through the sixth aperture section (456) during opening and closing of the cabinet door; when the cabinet door is in a closed state, the locking member (93) can reach the fifth hole section (455) by the movement of the locking member (40) to lock the cabinet door in the locked state by the locking portion (931) abutting against the locking member (40).

13. Switchgear comprising an interlocking mechanism according to any one of claims 1 to 12.