CN201252037Y - Interlocking device for cable vault door - Google Patents

Abstract

The utility model discloses an interlocking device for a cable room door, which comprises: an interlocking bent plate capable of sliding up and down relative to a cabinet body, which is fixedly connected with the door body; a linkage bracket, which is arranged on the cabinet body so as to slide up and down; A cam, which is fixed on the operating main shaft of the grounding switch, and the peripheral surface of the cam pushes against the linkage bracket and drives it to slide up and down; a reversing crank arm, which is rotated and arranged on the cabinet body; The two ends are respectively rotated to connect the linkage bracket and one end of the reversing arm; a blocking pin that can extend out of the cabinet to block the sliding of the interlocking bent plate up and down, which can slide horizontally to connect the cabinet, and the reversing arm The other end connects the blocking pin and drives it to slide. The first interlock mechanism can ensure that only when the grounding switch is closed and the circuit breaker is disconnected, the door of the cable room can be opened and the operator can enter the switch cabinet, so it can prevent the operator from entering the live switch cabinet, which is powerful Ensure personal safety.

Description

A cable compartment door interlocking device

technical field

The utility model relates to an interlocking device for a cable chamber door.

Background technique

A cable room in a switch cabinet, which includes a cabinet body, a door body connected to the cabinet body and a grounding switch operating main shaft. An interlocking device is arranged between the door body and the cabinet body, and the interlocking device includes a crank arm added on a hexagonal axis. If the door body of the cable chamber is in an open state, when the grounding main shaft rotates, the crank arm is blocked by the stopper and cannot rotate, so that the grounding switch cannot be opened. But because the operation is to use a very long handle, hard operation will destroy the interlock, resulting in equipment damage and personnel in a state of no ground protection. When the grounding switch is turned on, the insert on the door of the cable room is blocked by the interlocking lever inside the cabinet, so that the door cannot be opened. However, due to manufacturing reasons, the door will be opened when it is pulled hard, which is not conducive to personal safety.

Utility model content

The utility model provides an interlocking device for a cable chamber door, which overcomes the disadvantage of low safety performance in the interlocking device for a cable chamber door in the background technology.

The technical scheme that the utility model solves its technical problem adopts is:

An interlocking device for a door of a cable room, which is arranged in a cable room, and the cable room includes a cabinet body, a door body connected to the cabinet body, and a main shaft for operating a grounding switch. The interlocking device includes a first interlocking mechanism, which include:

An interlocking bent plate that can slide up and down relative to the cabinet body, which is fixedly connected to the door body;

a linkage bracket, which can be slid up and down and arranged on the cabinet body;

A cam, which is fixed on the operating main shaft of the grounding switch, and the peripheral surface of the cam pushes against the linkage bracket and drives it to slide up and down;

A reversing crank arm, which is rotated and arranged on the cabinet body;

a first connecting rod, the two ends of which are respectively rotatably connected to one end of the linkage bracket and the reversing crank arm; and

A blocking pin that can extend out of the cabinet body to block the sliding of the interlocking bent plate up and down can be horizontally slidably connected to the cabinet body, and the other end of the reversing arm is connected to the blocking pin and drives it to slide.

In a preferred embodiment of the present invention, the linkage bracket includes a top plate against the peripheral surface of the cam, a pole fixed under the top plate, and a pole connected between the cabinet body and the pole, with the pole facing downwards. The first elastic body that makes the strut receive an upward elastic force when sliding, and the strut rotates to connect the connecting rod.

In a preferred embodiment of the present utility model, a second elastic body is provided between the blocking pin and the cabinet to make the blocking pin receive an outward elastic force when the blocking pin slides inward.

In a preferred embodiment of the present invention, the other end of the reversing crank arm is provided with a sliding slot, and the inner end of the blocking pin is fixed with a pin, and the pin is slidably and rotatably connected in the sliding slot.

In a preferred embodiment of the present invention, the reversing arm is V-shaped, it has a middle part and two ends located on both sides of the middle part, and the middle part is rotatably arranged on the cabinet body.

In a preferred embodiment of the present utility model, the cabinet body is provided with an operating hole and a shutter that can rotate to control whether to cover the operating hole; the interlocking device also includes a second interlocking mechanism, which includes:

A blocking piece that can extend out of the cabinet body to block the rotation of the shutter, and it can be horizontally slidably arranged on the cabinet body;

a second connecting rod, one end of which is rotatably connected to the blocking member;

A pair of lug arms, one end of which is rotatably connected to the other end of the second connecting rod;

A rotating shaft, which is rotatably arranged on the cabinet body, and the rotating shaft is fixedly connected to the other end of the two-ear crank arm;

an unlocking lever, which can be horizontally slidably arranged on the cabinet body, and one end of the unlocking lever is connected to the rotating shaft and drives the rotating shaft to rotate; and

An unlocking bent plate, which is fixedly connected to the door body, and the unlocking bent plate abuts against the other end of the unlocking lever.

In a preferred embodiment of the present utility model, a third elastic body is arranged between the unlocking lever and the cabinet to make the unlocking lever receive an outward elastic force when the unlocking lever slides inward.

In a preferred embodiment of the present utility model, a reset crank arm is fixedly connected to the rotating shaft, and a sliding groove is provided at its end, and a pin is fixedly provided at the inner end of the unlocking lever, and the pin is slidably and rotatably connected to slide through. in the slot.

Compared with the background technology, this technical solution: the first interlock mechanism can ensure that the door of the cable room can only be opened and the operator can enter the switch cabinet only when the grounding switch is closed and the circuit breaker is disconnected, so it can prevent The operator enters the live switch cabinet, which effectively guarantees personal safety. The second interlocking mechanism can ensure that as long as the door of the cable room is not closed, the grounding switch cannot be operated, and the grounding switch cannot be opened, which can strongly guarantee personal safety. The two-ear crutches, stoppers and connecting rods of the second interlocking mechanism constitute a four-bar linkage assembly, and the four-bar linkage assembly has a dead point, which is used to ensure that the grounding switch cannot be opened after the cable chamber door is opened.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

FIG. 1 is a schematic diagram of a first interlocking mechanism of a preferred embodiment.

FIG. 2 is a schematic front view of a second interlocking mechanism of a preferred embodiment.

FIG. 3 is a schematic left view of a second interlocking mechanism of a preferred embodiment.

FIG. 4 is a schematic top view of a second interlocking mechanism in a preferred embodiment.

Detailed ways

An interlocking device for a door of a cable room is arranged in a cable room and includes a first interlock mechanism and a second interlock mechanism. The cable room includes a cabinet body 100, a door body connected to the cabinet body and a grounding switch operating main shaft 200. The first side of the door body can be slid up and down and connected, and can be connected to the right side panel of the cabinet body by rotating relative to the longitudinal axis. 110, the cabinet is provided with an operation hole and a shutter 300 that can be rotated to control whether to cover the operation hole.

The first interlocking mechanism, please refer to FIG. 1 , includes an interlocking bent plate 10 , a linkage bracket 12 , a cam 14 , a reversing crank arm 16 , a first connecting rod 18 and a blocking pin 20 . The interlocking bent plate 10 is fixedly connected to the door body and can slide up and down relative to the cabinet body 100 .

The blocking pin 20 is horizontally slidably connected to the cabinet body 100 and has an inner end and an outer end. Due to the sliding, it is possible to control whether the outer end of the blocking pin 20 extends out of the cabinet body 100. If it extends out of the cabinet body 100, it can stop the interlocking bent plate 10 from sliding up and down, and if it does not extend out, the interlocking bent plate is allowed. 10 Swipe up and down. A second elastic body 22 is disposed between the blocking pin 20 and the cabinet body 100 , and the second elastic body 22 can make the blocking pin 20 receive an outward elastic force for reset.

The reversing arm 16 is V-shaped, it has a middle part and a first end and a second end located on both sides of the middle part, the middle part is rotatably arranged on the cabinet body 100, the first end is connected to the inner end of the blocking pin 20, and, The rotation of the reversing crank arm 16 can drive the blocking pin 20 to slide horizontally relative to the cabinet body 100 . The connection between the first end of the reversing arm 16 and the inner end of the blocking pin 20 is as follows: the first end of the reversing arm 16 is provided with a sliding slot, and the inner end of the blocking pin 20 is fixed with a pin. The pin is slidably and rotatably connected in the sliding groove.

The linkage bracket 12 is arranged on the cabinet body 100 so as to slide up and down, and it includes a top plate, a rod and a first elastic body. The top of the pole is fixed on the bottom surface of the top plate, and the first elastic body is arranged between the pole and the cabinet body 100 to make the linkage bracket 12 receive upward elastic force to reset.

The first connecting rod 18 rotatably connects the second end of the reversing crank arm 16 and the top end of the strut of the linkage bracket 12 , so the linkage bracket 12 slides up and down to drive the reversing crank arm 16 to rotate.

The cam 14 is coaxially fixed on the grounding switch operating main shaft 200, and the peripheral surface of the cam 14 is pressed against the top plate of the linkage bracket 12, so the rotation of the operation main shaft 200 can drive the cam 14 to rotate, and the rotation of the cam 14 can drive the linkage bracket 12 Swipe up and down.

When the door body could not be promoted (slide up and down), the door body would be blocked by the stoppers on four sides and could not be opened, so the operator needs to open the door body and the door must be lifted earlier. When the grounding switch is opened, since the interlocking bent plate 8 on the door body is blocked by the blocking pin 20 protruding from the right side panel 110 of the cabinet body 100 and cannot be lifted, the door body cannot be opened. When the switch is disconnected and the grounding switch is grounded, the door can be opened and the operator can enter the switch cabinet. When the operator manually operates the handle to turn the grounding switch to operate the main shaft 200, the cam 14 rotates accordingly, presses against the top plate of the linkage bracket 12 and slides downward, and the linkage bracket 12 drives the first connecting rod 18 to move downward, and then drives the reversing The crank arm 16 rotates, and then drives the blocking pin 20 to withdraw, and now the door body can be promoted and opened. After the door body is closed, under the action of the first elastic body and the second elastic body, the mechanism returns to the unopenable state.

This second interlocking mechanism, please refer to Fig. 2,3,4, and it is arranged on the installation frame 120 of cabinet, and it comprises a stopper 24, a second connecting rod 26, a double lug arm 28, a rotating shaft 30 . An unlocking lever 32 and an unlocking bent plate 34 .

The blocking member 24 is horizontally slidably disposed on the cabinet body 100 and has an inner end and an outer end. Due to the sliding, it is possible to control whether the outer end of the stopper 24 stretches out of the cabinet body 100. If it stretches out of the cabinet body 100, it can be pressed against the side of the shutter 300, which can block the rotation of the shutter 300 and ensure that the shutter 300 300 covers the operation hole, which can ensure that the operator cannot insert the operation tool through the operation hole, and can ensure that the grounding switch cannot be disconnected. If it is not stretched out, the shutter 300 is allowed to rotate.

The inner end of the blocking member 24 is rotatably connected to one end of the second connecting rod 26, and the other end of the second connecting rod 26 is rotatably connected to one end of the double-ear crank arm 28, and the other end of the double-ear crank arm is fixed on the upper part of the rotating shaft 30, and the rotating shaft 30 rotates It is arranged on the cabinet body 100 , and the lower part of the rotating shaft 30 is connected to the inner end of the unlocking lever 32 , and the unlocking lever 32 is arranged on the cabinet body 100 so as to be able to slide horizontally. The rotating shaft 30 is connected to the unlocking lever 32, and the horizontal sliding of the unlocking lever 32 can drive the rotating shaft 30 to rotate. There is a sliding groove, and the inner end of the unlocking lever 32 is fixedly provided with a pin, and the pin is slidably and rotatably connected in the sliding groove.

The unlocking bent plate 34 is fixedly connected to the door body, and the unlocking bent plate 34 can abut against the outer end of the unlocking lever 32 to enable the unlocking lever 32 to slide horizontally. A third elastic body 38 is disposed between the unlocking lever 32 and the cabinet body 100 , and the third elastic body 38 can make the unlocking lever 32 receive an outward elastic force for reset.

The above is only a preferred embodiment of the utility model, so the scope of implementation of the utility model cannot be limited with this, that is, the equivalent changes and modifications made according to the patent scope of the utility model and the content of the specification should still belong to the utility model. Within the scope covered by the utility model patent.

Claims (8)

1. A cable room door interlocking device, which is arranged in the cable room, the cable room includes a cabinet, a door connected to the cabinet and a grounding switch operating main shaft, characterized in that: the interlocking device includes a first An interlocking mechanism, which includes: An interlocking bent plate that can slide up and down relative to the cabinet body, which is fixedly connected to the door body; a linkage bracket, which can be slid up and down and arranged on the cabinet body; A cam, which is fixed on the operating main shaft of the grounding switch, and the peripheral surface of the cam pushes against the linkage bracket and drives it to slide up and down; A reversing crank arm, which is rotated and arranged on the cabinet body; a first connecting rod, the two ends of which are respectively rotatably connected to one end of the linkage bracket and the reversing crank arm; and A blocking pin that can extend out of the cabinet body to block the sliding of the interlocking bent plate up and down can be horizontally slidably connected to the cabinet body, and the other end of the reversing arm is connected to the blocking pin and drives it to slide. 2. An interlocking device for a cable chamber door according to claim 1, wherein the linkage bracket includes a top plate against the peripheral surface of the cam, a support rod fixed under the top plate, and a Between the body and the support rod, when the support rod slides downward, the first elastic body makes the support rod receive an upward elastic force, and the support rod rotates to connect the connecting rod. 3. An interlocking device for a cable compartment door according to claim 1, characterized in that: a second elastic body is provided between the blocking pin and the cabinet to make the blocking pin receive an outward elastic force when the blocking pin slides inward. . 4. A cable chamber door interlocking device according to claim 1, characterized in that: the other end of the reversing arm is provided with a sliding slot, the inner end of the blocking pin is fixed with a pin, the pin slides, The rotation is connected in the sliding groove. 5. A cable chamber door interlocking device according to claim 1, characterized in that: the reversing arm is V-shaped, it has a middle part and two ends located on both sides of the middle part, the middle part is rotatably arranged in the cabinet body. 6. A cable compartment door interlocking device according to claim 1 or 2 or 3 or 4 or 5, characterized in that: the cabinet is provided with an operation hole and a cover that can be rotated to control whether to cover the operation hole plate; the interlocking device also includes a second interlocking mechanism, which includes: A blocking piece that can extend out of the cabinet body to block the rotation of the shutter, and it can be horizontally slidably arranged on the cabinet body; a second connecting rod, one end of which is rotatably connected to the blocking member; A pair of lug arms, one end of which is rotatably connected to the other end of the second connecting rod; A rotating shaft, which is rotatably arranged on the cabinet body, and the rotating shaft is fixedly connected to the other end of the two-ear crank arm; an unlocking lever, which can be horizontally slidably arranged on the cabinet body, and one end of the unlocking lever is connected to the rotating shaft and drives the rotating shaft to rotate; and An unlocking bent plate, which is fixedly connected to the door body, and the unlocking bent plate abuts against the other end of the unlocking lever. 7. A cable chamber door interlocking device according to claim 6, characterized in that: a third elastic body is arranged between the unlocking lever and the cabinet to make the unlocking lever receive an outward elastic force when the unlocking lever slides inward . 8. A cable chamber door interlocking device according to claim 7, characterized in that: the rotating shaft is fixedly connected with a reset arm, its end is provided with a sliding slot, and the inner end of the unlocking lever is fixed with a The pin is slidably and rotatably connected in the sliding groove.

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