A switch cabinet valve mechanism

Abstract

The present invention provides a switch cabinet valve mechanism, comprising a cabinet, guide plates fixedly mounted on both sides of the cabinet, and a guide rod vertically mounted on the cabinet, a valve that moves up and down is sleeved on the guide rod through a rebound module, the valve is fixedly mounted on a transmission module through a fixed plate, a transmission module is fixedly mounted in the guide plate, and the transmission module is respectively arranged corresponding to the valves that move up and down; the push rod moves forward and backward in the guide groove under the action of the circuit breaker trolley, driving the chain and the valve connected to the chain to move up and down. The present invention is composed of a sprocket, a chain, a guide plate, a push rod, a guide rod, a valve, a spring, a fixed block, a fixed plate, etc., which abandons the crank arm and connecting rod mechanism of the traditional valve and adopts a sprocket chain transmission, so that the structure is more compact and reliable, the operation is smooth, and the occupied space is greatly reduced, and it is particularly suitable for compact cabinets with small space.

Description

Technical Field

[0001] The invention mainly relates to the field of power distribution, and in particular to a switch cabinet valve mechanism. Background Art

[0002] The main function of the switch cabinet valve mechanism is that after the circuit breaker trolley is pulled out, the valve automatically closes to block the live static contact and prevent the maintenance personnel from accidentally touching the live body. On the contrary, when the equipment maintenance is completed, as the circuit breaker trolley is swinging in, the valve should be able to open automatically and maintain its position. At present, the power system pays more and more attention to the safety performance of the switchgear. The reliability of the switch cabinet valve mechanism is directly related to the safety performance of the switchgear. The traditional valve mechanism generally consists of a crank arm assembly, a connecting rod, a valve, and a guide rod. There is a reset spring inside the crank arm assembly. The upper and lower crank arms are connected to the lower and upper valves through the connecting rod respectively. When the circuit breaker trolley is swinging in, the upper crank arm rotates clockwise to drive the lower valve to move down along the guide rod, and the lower crank arm rotates counterclockwise to drive the upper valve to move up along the guide rod. At this time, the valve is open; when the circuit breaker trolley is swinging out, the reset spring inside the crank arm assembly is actuated, the upper crank arm rotates counterclockwise, and the lower crank arm rotates clockwise, driving the valve to close through the connecting rod. Although the traditional valve mechanism can meet the use requirements, it also has some problems. First, the transmission mechanism is not flexible and often gets stuck. Second, it takes up a large space, affecting the installation of other components. Summary of the invention

[0003] In view of the above-mentioned defects of the prior art, the crank arm and connecting rod mechanism are adopted, the transmission mechanism is inflexible, often stuck, occupies a large space, and affects the installation of other components. The present invention provides a switch cabinet valve mechanism, comprising a cabinet 1, a guide plate 4 fixedly mounted on both sides of the cabinet 1, and a guide rod 6 vertically mounted on the cabinet 1, the guide rod 6 is provided with a valve 7 that moves up and down through a rebound module, the valve 7 is fixedly mounted on the transmission module through a fixed plate 9, the guide plate 4 is fixedly mounted with a transmission module, and the transmission module is respectively arranged corresponding to the valve 7 that moves upward and downward;

[0004] The transmission module includes a sprocket 2, a chain 3 and a push rod 5. Every three sprockets 2 form a right-angled triangle stroke unit. The chain 3 rotates freely on the right-angled triangle formed by the sprockets 2. The fixing plate 9 of the valve 7 is fixed to the chain 3 in the vertical direction by bolts. The chain 3 in the horizontal direction is hinged with the push rod 5 through a fixedly installed fixing block 10. The other end of the push rod 5 is embedded in the guide groove 11 of the guide plate 4.

[0005] The push rod 5 is pushed by the circuit breaker trolley 12 to move forward and backward in the guide groove 11, thereby driving the chain 3 and the valve 7 connected to the chain 3 to move up and down.

[0006] Preferably, the rebound module adopts a spring 8 , which is sleeved on the guide rod 6 , one end of the spring 8 is connected to the end of the guide rod 6 , and the other end is connected to the valve 7 .

[0007] Preferably, the valve 7 moves in opposite directions when opened, and springs 8 are provided at both upper and lower ends of the guide rod 6 in the direction in which the valve 7 moves away from each other.

[0008] Preferably, a pair of guide grooves 11 are provided on the guide plate 4 , and the shapes of the guide grooves 11 are symmetrically arranged with respect to the middle horizontal plane of the cabinet 1 , and the push rods 5 of each set of the transmission modules are arranged corresponding to their respective guide grooves 11 .

[0009] Preferably, the sprocket 2 rotates around an axis perpendicular to the sprocket 2 .

[0010] Preferably, a push plate 13 is provided on the circuit breaker trolley 12, and the push plate 13 pushes the push rod 5 to move forward and limits the push rod 5 after the valve 7 reaches the open position.

[0011] Preferably, the contact surface between the push plate 13 and the push rod 5 is provided with a chamfer.

[0012] The beneficial effects of the present invention are as follows: the present invention is composed of a sprocket, a chain, a guide plate, a push rod, a guide rod, a valve, a spring, a fixed block, a fixed plate, etc. It abandons the crank arm and connecting rod mechanism of the traditional valve and adopts a sprocket chain transmission. The structure is more compact and reliable, the operation is smooth, and the occupied space is greatly reduced. It is particularly suitable for compact cabinets with smaller space. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present invention;

[0014] Figure 2 for Figure 1 A partial enlarged view of the figure, excluding the guide plate;

[0015] Figure 3 It is a structural diagram of the initial state in the embodiment;

[0016] Figure 4 This is a structural diagram of the embodiment in which the valve is fully opened;

[0017] In the figure,

[0018] 1. Cabinet; 2. Sprocket; 3. Chain; 4. Guide plate; 5. Push rod; 6. Guide rod; 7. Valve; 8. Spring; 9. Fixed plate; 10. Fixed block; 11. Guide groove; 12. Circuit breaker trolley; 13. Push plate. DETAILED DESCRIPTION

[0019] In order to make the technical solution of the present invention better understood by the technical personnel in the field, and to make the above-mentioned features, purposes and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with the embodiments. The embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0020] like Figure 1-2 As shown, the present invention includes: a cabinet 1, guide plates 4 fixedly mounted on both sides of the cabinet 1, and guide rods 6 vertically mounted on the cabinet 1, wherein a valve 7 that moves up and down is sleeved on the guide rods 6 through a rebound module, and the valve 7 is fixedly mounted on a transmission module through a fixed plate 9, and a transmission module is fixedly mounted in the guide plate 4, and the transmission modules are respectively arranged corresponding to the valve 7 that moves upward and downward;

[0021] The transmission module includes a sprocket 2, a chain 3 and a push rod 5. Every three sprockets 2 form a right-angled triangle stroke unit. The chain 3 rotates freely on the right-angled triangle formed by the sprockets 2. The fixing plate 9 of the valve 7 is fixed to the chain 3 in the vertical direction by bolts. The chain 3 in the horizontal direction is hinged with the push rod 5 through a fixedly installed fixing block 10. The other end of the push rod 5 is embedded in the guide groove 11 of the guide plate 4.

[0022] The push rod 5 is pushed by the circuit breaker trolley 12 to move forward and backward in the guide groove 11, thereby driving the chain 3 and the valve 7 connected to the chain 3 to move up and down.

[0023] In this embodiment, the rebound module preferably adopts a spring 8 , which is sleeved on the guide rod 6 , one end of the spring 8 is connected to the end of the guide rod 6 , and the other end is connected to the valve 7 .

[0024] In the present embodiment, preferably, the valve 7 moves in opposite directions when opened, and springs 8 are provided at both upper and lower ends of the guide rod 6 in the direction in which the valve 7 moves away from each other.

[0025] In this embodiment, preferably, a pair of guide grooves 11 are provided on the guide plate 4 , and the shapes of the guide grooves 11 are symmetrically arranged with respect to the middle horizontal plane of the cabinet 1 , and the push rods 5 of each set of the transmission modules are arranged corresponding to their respective guide grooves 11 .

[0026] In this embodiment, the sprocket 2 preferably rotates around an axis perpendicular to the sprocket 2 .

[0027] In this embodiment, preferably, a push plate 13 is provided on the circuit breaker trolley 12, and the push plate 13 pushes the push rod 5 to move forward and limits the push rod 5 after the valve 7 reaches the open position.

[0028] In this embodiment, preferably, the contact surface between the push plate 13 and the push rod 5 is provided with a chamfer.

[0029] The above structure is provided to utilize chamfering to better realize the transmission of motion and ensure smooth operation.

[0030] like Figure 3-4 As shown, in actual operation, the specific operation process is as follows:

[0031] 1. Initial state:

[0032] When the circuit breaker trolley 12 is in the test position, the valve 7 is in the closed position under the action of the spring 8, and the push rod 5 is at the rear end of the guide groove 11;

[0033] 2. The valve opens gradually:

[0034] When the circuit breaker trolley 12 is swinging in, the push plate 13 on the circuit breaker trolley 12 pushes the push rod 5 to move forward in the guide groove 11, driving the chain 3 to rotate, and then driving the upper and lower valves 7 to overcome the resistance of the spring 8, and move upward and downward respectively, and the valve 7 opens;

[0035] 3. The valve reaches the working position:

[0036] When the push rod 5 slides into the front end of the guide groove 11, the valve 7 opens to the open position. At this time, the trolley continues to swing in, and the push plate 13 of the circuit breaker trolley 12 limits the push rod 5, so that the valve 7 remains in the open position, and the circuit breaker trolley 12 continues to swing in to the working position;

[0037] 4. The valve gradually closes:

[0038] When the circuit breaker trolley 12 is swung out, as the circuit breaker trolley 12 is swung out, when the push plate 13 moves to the rear side of the push rod 5, the limit of the push rod 5 is released, and the valve 7 moves to the middle under the action of the springs 8 at both ends of the guide rod 6. When the circuit breaker trolley 12 moves to the test position, the valve 7 is completely closed, and it can be safely repaired at this time.

[0039] The above embodiments are merely illustrative of the principles and effects of this patent application, and are not intended to limit this patent application. Anyone familiar with this technology can modify or change the above embodiments without violating the spirit and scope of this patent application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in this patent application should still be covered by the claims of this patent application.

Claims

1. A switch cabinet valve mechanism, characterized in that: The cabinet comprises a cabinet (1), guide plates (4) fixedly mounted on both sides of the cabinet (1), and guide rods (6) vertically mounted on the cabinet (1); a valve (7) that moves up and down is sleeved on the guide rods (6) via a rebound module; the valve (7) is fixedly mounted on a transmission module via a fixed plate (9); a transmission module is fixedly mounted in the guide plates (4); and the transmission modules are respectively arranged corresponding to the valve (7) that moves upward and downward; The transmission module comprises a sprocket (2), a chain (3) and a push rod (5), wherein every three sprockets (2) form a right-angled triangle stroke unit, wherein the chain (3) rotates freely on the right-angled triangle formed by the sprockets (2), wherein the fixing plate (9) of the valve (7) is fixed to the chain (3) in the vertical direction by bolts, and the chain (3) in the horizontal direction is hingedly connected to the push rod (5) through a fixedly installed fixing block (10), and the other end of the push rod (5) is embedded in the guide groove (11) of the guide plate (4); The push rod (5) moves forward and backward in the guide groove (11) under the action of being pushed by the circuit breaker trolley (12), thereby driving the chain (3) and the valve (7) connected to the chain (3) to move up and down; The rebound module adopts a spring (8), which is sleeved on the guide rod (6), one end of the spring (8) is connected to the end of the guide rod (6), and the other end is connected to the valve (7); The valve (7) moves in opposite directions when it is opened. In the direction away from the valve (7), springs (8) are provided at both upper and lower ends of the guide rod (6); A pair of guide grooves (11) are provided on the guide plate (4), and the shapes of the guide grooves (11) are symmetrically arranged with respect to the middle horizontal plane of the cabinet (1), and the push rods (5) of each set of the transmission modules are arranged corresponding to their respective guide grooves (11); The sprocket (2) rotates around an axis perpendicular to the sprocket (2); The circuit breaker trolley (12) is provided with a push plate (13), and the push plate (13) pushes the push rod (5) to move forward and limits the push rod (5) after the valve (7) reaches the open position; The contact surface between the push plate (13) and the push rod (5) is provided with a chamfer.

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