A ground interlock mechanism

Abstract

The utility model relates to a grounding interlock mechanism belongs to the control cabinet installation technical field. Including the circuit breaker, ground connection car and circuit breaker support track installed in the cabinet body, the cabinet body includes the cabinet bottom plate, the ground connection car can move along the surface of cabinet bottom plate, the lateral wall of cabinet body rotates and has installed locking knob and connecting rod rear swing arm, the front end of connecting rod is hinged in the bottom end of connecting rod front swing arm, the other end of connecting rod front swing arm is connected with locking knob, rotates through connecting rod front swing arm drive locking knob around the front rotation pin, the tail end of connecting rod is hinged in the bottom end of connecting rod rear swing arm, the bottom end of connecting rod rear swing arm has the button abutting portion that coordinates with button, drives the connecting rod rear swing arm rotation can rotate and switch between the button blocking state and the two states of avoidance state. The utility model has the following beneficial effects: the grounding device is placed under the circuit breaker, and the safety operation of equipment is ensured through the ingenious design of interlock mechanism.

Description

Technical Field

[0001] This utility model relates to a grounding interlocking mechanism and belongs to the field of control cabinet installation technology. Background Technology

[0002] Currently, common high-voltage switchgear on the ground has comprehensive electrical protection requirements, but current technology is not comprehensive and has the following drawbacks: 1. Due to the special operating environment, the casing size of mining high-voltage switchgear cannot be as large as that of ground switchgear, therefore, the mature grounding interlocking mechanism on the ground cannot be used underground. 2. Due to the design of the cabinet structure, the space below the circuit breaker cannot be effectively utilized, resulting in wasted space.

[0003] To solve one of the above problems, a grounding interlocking mechanism is urgently needed. Utility Model Content

[0004] Based on the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to place the grounding device below the circuit breaker and ensure the safe operation of the equipment through a reasonable interlocking mechanism. To this end, a grounding interlocking mechanism is provided.

[0005] The grounding interlocking mechanism of this utility model includes a circuit breaker, a grounding trolley, and a circuit breaker support rail installed inside a cabinet. The cabinet includes a bottom plate, and the rear end of the bottom plate has a door flange and an upward-opening door. The mechanism is characterized by further including a linkage rod, a button installed on the door flange, a hanging plate at the bottom of the door with a lock hole for engaging the button, the circuit breaker being movable back and forth along the circuit breaker support rail, the grounding trolley being movable back and forth along the surface of the bottom plate, and a locking mechanism rotatably mounted on the side wall of the cabinet. The locking block and the rear swing arm of the linkage are configured such that the front end of the linkage is hinged to the bottom end of the front swing arm of the linkage, and the other end of the front swing arm of the linkage is connected to the locking block. The locking block is driven to rotate around the front rotating pin by the front swing arm of the linkage. The tail end of the linkage is hinged to the bottom end of the rear swing arm of the linkage. The bottom end of the rear swing arm of the linkage has a button abutment part that cooperates with the button. Driving the locking block to rotate can switch between two states: a ground vehicle blocking state and a clearance state. Driving the rear swing arm to rotate can switch between two states: a button blocking state and a clearance state.

[0006] The circuit breaker and the grounding vehicle grounding device are arranged vertically. A rotatable locking block is installed between them. When the circuit breaker moves forward, it presses down on the locking block, and the lower end of the locking block blocks the grounding vehicle, preventing it from moving. At the same time, the locking block drives the linkage rod to move towards the cabinet door, causing the cabinet door button to be unable to be pressed. The cabinet door panel is locked by the button, and the cabinet door cannot be opened. Conversely, the circuit breaker cannot move forward, and the cabinet door can be opened freely.

[0007] In any of the above embodiments, preferably, the locking block includes a rotating block that rotates around a front rotating pin, and an upper and lower locking head are integrally formed on the rotating block. The connecting rod front swing arm is fixedly connected to the locking block. Driving the locking block to rotate, the lower locking head can rotate and switch between two states: a grounding vehicle blocking state and a grounding vehicle yielding state. The upper locking head can rotate and switch between two states: a circuit breaker blocking state and a circuit breaker yielding state. In any of the above embodiments, preferably, when the circuit breaker moves above the locking block, the button abutting part abuts against the inner end of the button, the circuit breaker chassis presses down on the upper lever to restrict the clockwise rotation of the locking block, and at this time the lower lever is lower than the height of the ground vehicle's top, the locking block is in a blocking state against the ground vehicle, the lower lever blocks the ground vehicle from moving forward, the rear swing arm of the connecting rod is in a blocking state against the button, preventing the button from being pressed, at this time the button cannot be disengaged from the mounting plate; if the circuit breaker is located on the upper and lower sides of the connecting rod respectively, the circuit breaker does not restrict the clockwise rotation of the locking block. By pressing the button, the button drives the rear swing arm of the linkage to rotate to the retracted state, and through the linkage rod and the front swing arm of the linkage, drives the locking block to rotate clockwise to the retracted state. At this time, the lower lever head is higher than the top of the ground vehicle, releasing the obstruction to the ground vehicle. After the button is pressed, it disengages from the mounting plate, completing the unlocking of the cabinet door, which can then be lifted. If the ground vehicle moves under the locking block, the lower lever head presses against the top of the ground vehicle to limit the counterclockwise rotation of the locking block. At this time, the upper lever head is higher than the height of the circuit breaker chassis, and the upper lever head of the locking block is in an obstructing state on the circuit breaker.

[0008] With both the circuit breaker and grounding carriage in their initial positions, the button is extended, locking the door via the mounting plate to prevent it from moving upwards and opening. When the circuit breaker moves forward, the locking block is pressed against the circuit breaker chassis. At this time, the lower end of the locking block is in contact with the grounding carriage, blocking its forward movement. Simultaneously, the locking block and the connecting rod swing arm move synchronously, driving the connecting rod towards the cabinet door, pressing the button and preventing it from being pressed, thus preventing the cabinet door from opening. Conversely, when the circuit breaker returns to its initial position, the locking block can swing freely. At this time, the grounding carriage can move forward, the button can be pressed, disengaging from the mounting plate, and the cabinet door can move upwards to complete the opening action.

[0009] In any of the above embodiments, it is preferred that the cabinet bottom plate is provided with a lower slide rail that cooperates with the ground vehicle, and the ground vehicle moves along the length direction of the lower slide rail.

[0010] In any of the above embodiments, it is preferred that the upper end of the rear swing arm of the connecting rod is rotatably mounted on the rear rotating seat, the rear rotating seat is mounted on the side wall of the cabinet, and the rotation center of the front swing arm of the connecting rod is at the same height as the rotation center of the rear swing arm of the connecting rod.

[0011] In any of the above embodiments, it is preferred that the bottom of the circuit breaker has a traveling wheel A that travels along the circuit breaker support rail, the circuit breaker support rail is installed on the side wall of the cabinet, and the ground vehicle is provided with a traveling wheel B that travels along the lower slide rail.

[0012] In any of the above embodiments, preferably, the button includes a pin that passes through the cabinet door flange. The outer end of the pin has a lock head that mates with a lock hole. The inner end of the pin is connected to a retaining ring via a thread. A compression spring is sleeved on the pin. The two ends of the compression spring abut against the lock head and the cabinet door flange, respectively. The compression spring provides a thrust to push the lock head into the lock hole. When the lock head is inserted into the lock hole, it can block the movement of the hanging plate. When the operator presses the lock head, there is a gap between the hanging plate and the cabinet door flange. The lock head overcomes the thrust of the compression spring and moves along its length toward the cabinet door flange, causing the lock head to disengage from the hanging plate and releasing the restriction on the movement of the hanging plate. The retaining ring can prevent the pin from completely disengaging from the cabinet door flange, and when the retaining ring abuts against the cabinet door flange, the lock head is exactly inserted into the lock hole.

[0013] Pushing the button on the rear swing arm of the connecting rod causes the rear swing arm and the locking block to rotate clockwise. The button can be inserted into the lock hole by moving to the right via the return spring. Pulling the circuit breaker forward causes the circuit breaker to strike the locking block, which in turn causes the rear swing arm and the locking block to rotate counterclockwise and reset.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The grounding interlocking mechanism described in this utility model places the grounding device below the circuit breaker and ensures the safe operation of the equipment through a cleverly designed interlocking mechanism.

[0015] The grounding interlocking mechanism described in this utility model, through this patent, can achieve perfect electrical protection requirements while keeping the overall size of the machine unchanged. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 (Initial state); Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 (Grounding vehicle blocking state); Figure 3This is a schematic diagram of the structure of the present invention. Figure 3 (Circuit breaker blocked state); Figure 4 for Figure 1 Structure diagram of the button in the middle.

[0018] In the diagram: 1. Circuit breaker; 2. Grounding vehicle; 3. Cabinet door; 4. Hanging plate; 5. Button; 5.1. Lock head; 5.2. Insert shaft; 5.3. Retaining ring; 5.4. Compression spring; 6. Cabinet door flange; 7. Linkage rod; 8. Linkage rod front swing arm; 9. Locking block; 10. Circuit breaker support rail; 11. Cabinet bottom plate; 12. Linkage rod rear swing arm; 13. Button abutment part; 14. Front rotating pin; 15. Lock hole; 16. Rear rotating seat. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0020] Example 1, such as Figure 1-2 As shown, the grounding interlocking mechanism includes a circuit breaker 1, a grounding trolley 2, and a circuit breaker support rail 10 installed inside a cabinet. The cabinet includes a cabinet base plate 11, with a cabinet door flange 6 and an upward-opening cabinet door 3 at the rear end of the cabinet base plate 11. It also includes a linkage rod 7. A button 5 is installed on the cabinet door flange 6. A hanging plate 4 is provided at the bottom of the cabinet door 3, and a lock hole 15 that mates with the button 5 is provided on the hanging plate 4. The circuit breaker 1 can move back and forth along the circuit breaker support rail 10, and the grounding trolley 2 can move back and forth along the surface of the cabinet base plate 11. A locking mechanism is rotatably installed on the side wall of the cabinet. The locking block 9 and the rear swing arm 12 of the linkage are connected. The front end of the linkage 7 is hinged to the bottom end of the front swing arm 8 of the linkage. The other end of the front swing arm 8 of the linkage is connected to the locking block 9. The locking block 9 is driven to rotate around the front rotating pin 14 by the front swing arm 8. The tail end of the linkage 7 is hinged to the bottom end of the rear swing arm 12 of the linkage. The bottom end of the rear swing arm 12 of the linkage has a button abutting part 13 that cooperates with the button 5. The locking block 9 can be rotated to switch between blocking and avoidance states. The rear swing arm 12 of the linkage can be rotated to switch between button blocking and avoidance states.

[0021] The grounding devices of circuit breaker 1 and grounding vehicle 2 are arranged vertically. A rotatable locking block 9 is set between them. When the circuit breaker moves forward, it presses down the locking block, and the lower end of the locking block blocks the grounding vehicle, preventing it from moving. At the same time, the locking block drives the connecting rod 7 to move towards the cabinet door, so that the cabinet door button cannot be pressed, the cabinet door plate is locked by the button, and the cabinet door cannot be opened. Conversely, the circuit breaker cannot move forward, and the cabinet door can be opened freely.

[0022] Example 1, such as Figure 1-2 As shown, the grounding interlocking mechanism includes a circuit breaker 1, a grounding trolley 2, and a circuit breaker support rail 10 installed inside a cabinet. The cabinet includes a cabinet base plate 11, with a cabinet door flange 6 and an upward-opening cabinet door 3 at the rear end of the cabinet base plate 11. It also includes a linkage rod 7. A button 5 is installed on the cabinet door flange 6. A hanging plate 4 is provided at the bottom of the cabinet door 3, and a lock hole 15 that mates with the button 5 is provided on the hanging plate 4. The circuit breaker 1 can move back and forth along the circuit breaker support rail 10, and the grounding trolley 2 can move back and forth along the surface of the cabinet base plate 11. A locking mechanism is rotatably installed on the side wall of the cabinet. The locking block 9 and the rear swing arm 12 of the linkage are connected. The front end of the linkage 7 is hinged to the bottom end of the front swing arm 8 of the linkage. The other end of the front swing arm 8 of the linkage is connected to the locking block 9. The locking block 9 is driven to rotate around the front rotating pin 14 by the front swing arm 8. The tail end of the linkage 7 is hinged to the bottom end of the rear swing arm 12 of the linkage. The bottom end of the rear swing arm 12 of the linkage has a button abutting part 13 that cooperates with the button 5. The locking block 9 can be rotated to switch between blocking and avoidance states. The rear swing arm 12 of the linkage can be rotated to switch between button blocking and avoidance states.

[0023] Furthermore, the locking block 9 includes a rotating block that rotates around the front rotating pin 14, and an upper and lower lever head are integrally formed on the rotating block. The connecting rod front swing arm 8 is fixedly connected to the locking block 9.

[0024] The locking block 9 is driven to rotate, and the lower lever can rotate and switch between two states: the grounding car blocking state and the grounding car avoiding state. The upper lever can rotate and switch between two states: the circuit breaker blocking state and the circuit breaker avoiding state.

[0025] Furthermore, referring to Figure 2 and Figure 3When the circuit breaker 1 moves above the locking block 9, the button abutment part 13 abuts against the inner end of the button 5. The chassis of the circuit breaker 1 presses down on the upper lever to restrict the clockwise rotation of the locking block 9. At this time, the lower lever is lower than the height of the top of the ground vehicle 2. The locking block 9 is in a blocking state against the ground vehicle 2. The lower lever prevents the ground vehicle 2 from moving forward. The rear swing arm 12 of the connecting rod is in a blocking state against the button 5, preventing the button 5 from being pressed. At this time, the button 5 cannot be disengaged from the hanging plate 4. If the circuit breaker 1 is located on the upper and lower sides of the connecting rod 7 respectively, the circuit breaker 1 does not restrict the clockwise rotation of the locking block 9. By pressing... Button 5 drives the rear swing arm 12 of the connecting rod to rotate to the retracted state, and through the connecting rod 7 and the front swing arm 8 of the connecting rod, drives the locking block 9 to rotate clockwise to the retracted state. At this time, the lower lever head is higher than the top of the ground vehicle 2, releasing the obstruction to the ground vehicle 2. After button 5 is pressed, it disengages from the hanging plate 4, completing the unlocking of the cabinet door 3, and the cabinet door 3 can be lifted. If the ground vehicle 2 moves to the bottom of the locking block 9, the lower lever head presses against the top of the ground vehicle 2 to restrict the locking block 9 from rotating counterclockwise. At this time, the upper lever head is higher than the chassis of the circuit breaker 1, and the upper lever head of the locking block 9 is in the state of obstructing the circuit breaker 1.

[0026] Appendix Figure 1 The shown state indicates that both circuit breaker 1 and grounding carriage 2 are in their initial positions. Button 5 is extended, locking the door via the mounting plate and preventing it from moving upwards to open. When circuit breaker 1 moves forward, the locking block 9 is pressed against the chassis of circuit breaker 1. At this time, the lower end of the locking block 9 is in contact with grounding carriage 2, blocking its forward movement. Simultaneously, the locking block 9 and the connecting rod swing arm 8 move synchronously, driving the connecting rod 7 towards the cabinet door, pressing against button 5, preventing button 5 from being pressed and the cabinet door from opening. Conversely, when circuit breaker 1 returns to its initial position, the locking block 9 can swing freely. At this time, grounding carriage 2 can move forward, button 5 can be pressed, disengaging from the mounting plate 4, and the cabinet door can move upwards to complete the opening action.

[0027] Furthermore, the cabinet base plate 11 is provided with a lower slide rail that cooperates with the ground carriage 2, and the ground carriage 2 moves along the length direction of the lower slide rail.

[0028] Furthermore, the upper end of the connecting rod rear swing arm 12 is rotatably mounted on the rear rotating seat 16, which is mounted on the side wall of the cabinet. The rotation center of the connecting rod front swing arm 8 is at the same height as the rotation center of the connecting rod rear swing arm 12.

[0029] Furthermore, the bottom of the circuit breaker 1 has a traveling wheel A that travels along the circuit breaker support rail 10, the circuit breaker support rail 10 is installed on the side wall of the cabinet, and the ground vehicle 2 is provided with a traveling wheel B that travels along the lower slide rail.

[0030] Furthermore, referring to Figure 4 The button 5 includes a shaft 5.2 that passes through the cabinet door flange 6. The outer end of the shaft 5.2 has a lock head 5.1 that mates with the lock hole 15. The inner end of the shaft 5.2 is threadedly connected to a retaining ring 5.3. A compression spring 5.4 is sleeved on the shaft 5.2. The two ends of the compression spring 5.4 abut against the lock head 5.1 and the cabinet door flange 6, respectively. The compression spring 5.4 provides a thrust to push the lock head 5.1 into the lock hole 15. When the lock head 5.1 is inserted into the lock hole 15, it can prevent... As the mounting plate 4 moves forward, the operator presses the lock head 5.1. There is a gap between the mounting plate 4 and the cabinet door flange 6. The lock head 5.1 overcomes the thrust of the compression spring 5.4 and moves along its length towards the cabinet door flange 6, causing the lock head 5.1 to disengage from the mounting plate 4 and releasing the restriction on the movement of the mounting plate 4. The setting of the retaining ring 5.3 can prevent the insert shaft 5.2 from completely disengaging from the cabinet door flange 6, and when the retaining ring 5.3 abuts against the cabinet door flange 6, the lock head 5.1 just enters the lock hole 15.

[0031] Pushing the rear swing arm 12 of the connecting rod with button 5 causes the rear swing arm 12 of the connecting rod and the locking block 9 to rotate clockwise. Button 5 can be inserted into the lock hole 15 by moving to the right through the reset spring. By pulling the circuit breaker 1 forward, the circuit breaker 1 strikes the locking block 9, which can cause the rear swing arm 12 of the connecting rod and the locking block 9 to rotate counterclockwise and reset.

[0032] The grounding interlocking mechanism described in this utility model addresses the issue of wasted space due to the original inability to effectively utilize the space below the circuit breaker caused by the shell structure design. By placing the grounding device below the circuit breaker and using a cleverly designed interlocking mechanism, the safe operation of the equipment can be ensured.

[0033] The grounding interlocking mechanism described in this utility model, through this patent, can achieve perfect electrical protection requirements while keeping the overall size of the machine unchanged.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0035] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A grounding interlocking mechanism, comprising a circuit breaker, a grounding trolley, and a circuit breaker support rail installed within a cabinet, the cabinet comprising a cabinet base plate, the rear end of the cabinet base plate having a cabinet door flange and an upward-opening cabinet door, characterized in that: It also includes a linkage rod, a button installed on the cabinet door flange, a hanging plate at the bottom of the cabinet door with a lock hole for engaging the button, a circuit breaker that can move back and forth along a circuit breaker support track, a ground carriage that can move back and forth along the surface of the cabinet bottom plate, a locking block and a connecting rod rear swing arm that are rotatably installed on the side wall of the cabinet, the front end of the linkage rod is hinged to the bottom end of the connecting rod front swing arm, the other end of the connecting rod front swing arm is connected to the locking block, the locking block is driven to rotate around the front rotating pin by the connecting rod front swing arm, the tail end of the linkage rod is hinged to the bottom end of the connecting rod rear swing arm, the bottom end of the connecting rod rear swing arm has a button abutment that engages with the button, driving the connecting rod rear swing arm to rotate can switch between two states: button blocking state and avoidance state.

2. The grounding interlocking mechanism according to claim 1, characterized in that, The locking block includes a rotating block that rotates around a front rotating pin. An upper and lower lever are integrally formed on the rotating block to drive the locking block to rotate. The lower lever can rotate and switch between two states: a grounding vehicle blocking state and a grounding vehicle yielding state. The upper lever can rotate and switch between two states: a circuit breaker blocking state and a circuit breaker yielding state. The connecting rod front swing arm is fixedly connected to the locking block.

3. The grounding interlocking mechanism according to claim 2, characterized in that, When the circuit breaker moves above the locking block, the button abutment abuts against the inner end of the button. The circuit breaker chassis presses down on the upper lever to restrict the clockwise rotation of the locking block. At this time, the lower lever is lower than the height of the ground vehicle's top. The locking block is in a blocking state against the ground vehicle, and the lower lever prevents the ground vehicle from moving forward. The rear swing arm of the linkage is in a blocking state against the button, preventing the button from being pressed. At this time, the button cannot be disengaged from the mounting plate. If the circuit breaker is located on the upper and lower sides of the linkage, the circuit breaker does not restrict the clockwise rotation of the locking block. The button can be pressed by pressing the button. The button drives the rear swing arm of the linkage to rotate to the retracted state, and through the linkage rod and the front swing arm of the linkage, drives the locking block to rotate clockwise to the retracted state. At this time, the lower lever head is higher than the top of the ground vehicle, releasing the obstruction to the ground vehicle. After the button is pressed, it disengages from the mounting plate, completing the unlocking of the cabinet door, which can then be lifted. If the ground vehicle moves to the bottom of the locking block, the lower lever head presses against the top of the ground vehicle to limit the counterclockwise rotation of the locking block. At this time, the upper lever head is higher than the height of the circuit breaker chassis, and the upper lever head of the locking block is in an obstructing state on the circuit breaker.

4. The grounding interlocking mechanism according to claim 3, characterized in that, The cabinet base plate is provided with a lower slide rail that cooperates with the ground handling vehicle, and the ground handling vehicle moves along the length of the lower slide rail.

5. The grounding interlocking mechanism according to claim 4, characterized in that, The upper end of the rear swing arm of the connecting rod is rotatably mounted on the rear rotating seat, which is mounted on the side wall of the cabinet. The rotation center of the front swing arm of the connecting rod is at the same height as the rotation center of the rear swing arm of the connecting rod.

6. The grounding interlocking mechanism according to claim 5, characterized in that, The bottom of the circuit breaker has a traveling wheel A that travels along the circuit breaker support rail. The circuit breaker support rail is installed on the side wall of the cabinet. The ground vehicle is equipped with a traveling wheel B that travels along the lower slide rail.

7. The grounding interlocking mechanism according to claim 6, characterized in that, The button includes a shaft that passes through the cabinet door flange. The outer end of the shaft has a lock head that mates with a lock hole. The inner end of the shaft is connected to a retaining ring by a thread. A compression spring is sleeved on the shaft. The two ends of the compression spring abut against the lock head and the cabinet door flange, respectively.

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