Valve linkage locking device of side-mounted removable high-voltage switch cabinet

Abstract

The invention relates to a valve linkage locking device of a side-mounted removable high-voltage switch cabinet. The door comprises a middle door; the upper valve interlocking assembly comprises a push plate connected with the middle door; an upper valve; the linkage piece comprises a pushing part, a rotating part and an actuating part, and the actuating part comprises a limiting groove and a limiting piece which is movably connected into the limiting groove and connected with the upper valve; the push plate is matched with the push part, and when the middle door is closed, the push plate can push the push part and enable the linkage piece to rotate around the rotating part, so that the upper valve is pushed and opened in the first direction through the limiting piece; the lower valve interlocking assembly comprises a lower valve and a pushing piece connected with the middle door and the lower valve, when the middle door is closed, the pushing piece can push and open the lower valve in the second direction, and the first direction is perpendicular to the second direction. After the middle door of the movable high-voltage switch cabinet is closed, the valve is opened all the time, the circuit breaker handcart moves up and down in an electric or hand-cranking mode, and the valve does not have the clamping stagnation phenomenon.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage electrical equipment, in particular to a movable door linkage locking device of a side-mounted removable high-voltage switch cabinet. Background Art

[0002] At present, with the development of intelligent mines, intelligent high-voltage switchgear is gradually put into use, among which the use of intelligent high-voltage side-mounted removable switchgear accounts for a large part. During use, the valve is often stuck and damaged during the up and down movement of the trolley or hand crank. In non-intelligent switchgear, the trolley moves up and down by manual hand cranking. Once the valve is stuck, the hand cranking personnel can sense it and respond in time. However, when the valve of the intelligent high-voltage side-mounted removable switchgear is stuck, it cannot be sensed and the trolley movement of the electric chassis vehicle will not be stopped until the upper and lower valves are damaged, which makes the intelligent side-mounted removable switchgear unable to continue to be used. For this reason, a valve locking device is proposed to eliminate this hidden danger. Summary of the invention

[0003] To this end, the present invention provides a valve linkage locking device for a side-mounted removable high-voltage switch cabinet, which has a simple and reasonable structure and is easy to operate. After the middle door of the side-mounted removable high-voltage switch cabinet is closed, the valve is always opened, and the circuit breaker trolley moves up and down by electric or manual cranking without the valve getting stuck.

[0004] In order to solve the above technical problems, the present invention provides a valve linkage locking device for a side-mounted removable high-voltage switch cabinet, comprising: Middle door; An upper valve interlocking assembly, the upper valve interlocking assembly comprising: A push plate connected to the middle door; Upper valve; The linkage member comprises a pushing portion, a rotating portion and an actuating portion, wherein the actuating portion comprises a limiting groove and a limiting member movably connected in the limiting groove and connected to the upper valve; wherein the push plate cooperates with the pushing portion, and when the middle door is closed, the push plate can push the pushing portion and make the linkage member rotate around the rotating portion, so as to push and open the upper valve along a first direction through the limiting member; The lower valve interlocking assembly includes a lower valve and a pusher connected to the middle door and the lower valve respectively. When the middle door is closed, the pusher can push and open the lower valve along a second direction, wherein the first direction is perpendicular to the second direction.

[0005] In one embodiment of the present invention, the linkage comprises a first arm and a second arm connected to each other, one end of the first arm is configured as the pushing part, the first arm and the second arm are respectively configured as the rotating part, and one end of the second arm is configured as the actuating part.

[0006] In one embodiment of the present invention, the pushing portion includes a first roller in rolling contact with the pushing plate.

[0007] In one embodiment of the present invention, the rotating portion includes a fixing pin hingedly connected to the partition plate of the high-voltage switch cabinet.

[0008] In one embodiment of the present invention, the limiting member includes a pin shaft and a second roller rotatably connected to the pin shaft, and the second roller rolls in the limiting groove.

[0009] In one embodiment of the present invention, a guide rod is further included, and the upper valve is provided with a guide sleeve slidably connected to the guide rod.

[0010] In one embodiment of the present invention, the pushing member includes a connected connecting push rod and a connecting rod, the connecting push rod is located on the inner side of the middle door and is equipped with a third roller, and the connecting rod is connected to the lower valve.

[0011] In one embodiment of the present invention, the connecting rod and the connecting push rod are connected by bolts.

[0012] In one embodiment of the present invention, the connecting rod is riveted to the lower valve.

[0013] In one embodiment of the present invention, the upper valve and the lower valve are both installed with return springs, so that when the middle door is opened, the return springs are used for return.

[0014] The above technical solution of the present invention has the following advantages compared with the prior art: The valve linkage locking device of a side-mounted removable high-voltage switch cabinet described in the present invention has a simple and reasonable structure. The device is composed of a middle door, an upper valve interlocking assembly, a lower valve interlocking assembly, etc. The components are closely matched, the structure is compact, and it is easy to install and maintain. The device runs smoothly and can accurately and effectively realize the valve linkage locking operation of the switch cabinet. The operating force of the device is small, and the upper and lower valves can be opened at the same time, so that the valves are always kept in a normally open state, preventing the valves from getting stuck when the trolley moves up and down. The mechanism enables the side-mounted removable high-voltage switch cabinet to achieve remote operation and intelligent control, improving convenience and operability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0016] Figure 1 It is a structural schematic diagram of the upper valve interlocking assembly of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the lower valve interlocking assembly of the present invention.

[0018] Description of the Figures in the Specification: 1. Middle door; 20. Upper valve interlocking assembly; 21. Push plate; 22. Upper valve; 23. Linkage member; 23a. First arm; 23b. Second arm; 24. Pushing portion; 241. First roller; 25. Rotating portion; 251. Fixing pin; 26. Actuating portion; 261. Limiting groove; 262. Limiting member; 262a. Second roller; 27. Guide sleeve; 28. Guide rod; 30. Lower valve interlocking assembly; 31. Lower valve; 32. Pushing member; 321. Connecting push rod; 322. Connecting rod; 33. Third roller. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0020] In the present invention, if directions (up, down, left, right, front and back) are described, it is only for the convenience of describing the technical solution of the present invention, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation of the present invention.

[0021] In the present invention, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of the present invention, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0022] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected or electrically connected or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0023] Reference Figure 1 , Figure 2As shown, a valve linkage locking device of a side-mounted removable high-voltage switch cabinet of the present invention comprises: Middle door 1; The upper valve interlocking assembly 20 comprises: A push plate 21 connected to the middle door 1; Upper valve 22; The linkage member 23 includes a pushing portion 24, a rotating portion 25 and an actuating portion 26, wherein the actuating portion 26 includes a limiting groove 261 and a limiting member 262 movably connected to the limiting groove 261 and connected to the upper valve 22; wherein the push plate 21 cooperates with the pushing portion 24, and when the middle door 1 is closed, the push plate 21 can push the pushing portion 24 and make the linkage member 23 rotate around the rotating portion 25, so as to move the linkage member 23 along a first direction ( Figure 1 Push and open the upper valve 22 in the middle and upper and lower directions; The lower valve interlocking assembly 30 includes a lower valve 31 and a pusher 32 connected to the middle door 1 and the lower valve 31 respectively. When the middle door 1 is closed, the pusher 32 can push and move along the second direction ( Figure 2 The lower valve 31 is opened in the first direction and the second direction is perpendicular to each other.

[0024] Through the above arrangement, the closing action of the middle door 1 drives the upper valve 22 and the lower valve 31 to open simultaneously through the push plate 21, and the multi-directional synchronous operation is realized by mechanical linkage. The linkage member 23 controls the opening direction and amplitude of the valve through the limit groove 261 and the limit member 262 and the guide rod 28 to ensure that the valve moves according to the predetermined path to prevent abnormal operation.

[0025] In one embodiment, the linkage 23 includes a first arm 23a and a second arm 23b connected to each other, and the whole is L-shaped. One end of the first arm 23a is configured as the pushing portion 24, and the first arm 23a and the second arm 23b are respectively configured as the rotating portion 25, and one end of the second arm 23b is configured as the actuating portion 26. The push rod 21 pushes the pushing portion 24, and the pushing portion 24 transmits the force to the linkage 23 through the first arm 23a. The linkage 23 rotates around the rotating portion 25, so that the actuating portion 26 on the second arm 23b drives the upper valve 22 to move. The connection method of the first arm 23a and the second arm 23b ensures that the driving force can be smoothly converted into the movement of the valve, and maintains the synchronization and coordination of the linkage action. In addition, the L-shaped linkage 23 has a compact structure and occupies a small space, which meets the space requirements of the side-mounted removable high-voltage switchgear.

[0026] In one embodiment, the pushing portion 24 includes a first roller 241 in rolling contact with the push plate 21. When the middle door 1 is closed, the push plate 21 contacts the pushing portion 24 through the first roller 241. The roller converts the linear motion of the push plate 21 into the rotational motion of the pushing portion 24, thereby driving the linkage 23 to rotate and realize the opening of the upper valve 22. The use of the roller reduces the friction between the push plate 21 and the pushing portion 24, improves the smoothness and response speed of the movement. The rolling contact reduces wear, extends the service life of the device, and reduces maintenance costs. The design of the roller helps to accurately control the transmission of the driving force and ensure that the valve moves along a predetermined path.

[0027] In one embodiment, the rotating part 25 includes a fixing pin 251 hingedly connected to the partition of the high-voltage switch cabinet. The fixing pin 251 serves as the rotation axis of the linkage member 23, so that the linkage member 23 can rotate around it, so that the pushing part 24 can effectively drive the actuating part 26.

[0028] In one embodiment, the limiting member 262 includes a pin and a second roller 262a rotatably connected to the pin, and the second roller 262a rolls in the limiting groove 261. The limiting groove 261 is specifically in the shape of a long waist hole. The long waist hole design of the limiting groove 261 cooperates with the second roller 262a to ensure that the limiting member 262 moves along a specific path and prevents the valve from deviating from a predetermined direction. The roller rolls in the limiting groove 261, which reduces sliding friction, wear and noise, and extends the service life of the device.

[0029] In one embodiment, a guide rod 28 is further included, and the upper valve 22 is provided with a guide sleeve 27 slidably connected to the guide rod 28. The cooperation between the guide sleeve 27 and the guide rod 28 ensures that the upper valve 22 moves along a predetermined path, avoids jamming or damage caused by deviation, increases the stability of the valve movement, reduces displacement caused by vibration or impact, and prolongs the life of the device.

[0030] It should be noted that when the middle door 1 is closed, the push plate 21 is pushed, and the push plate 21 pushes the linkage member 23 to rotate around the rotating part 25, thereby further driving the limit member 262 to move through the limit groove 261, thereby driving the guide sleeve 27 of the upper valve 22 to slide on the guide rod 28, and move along the first direction to open the upper valve 22, thereby realizing the free movement of the trolley from the isolation test position to the working position or from the working position to the isolation test position. Even if the electric chassis trolley of the intelligent side-mounted removable switch cabinet drives the trolley to move up and down frequently, the upper valve 22 will not move with it, thereby avoiding damage caused by the jamming of the upper valve 22.

[0031] In one embodiment, the push member 32 includes a connecting push rod 321 and a connecting rod 322 connected to each other. The connecting push rod 321 is located inside the middle door 1 and is equipped with a third roller 33. The connecting rod 322 is connected to the lower valve 31. The design of the connecting push rod 321 and the connecting rod 322 realizes the synchronous movement of the lower valve 31 and the middle door 1, ensuring that the lower valve 31 is accurately opened when the middle door 1 is closed. The provision of the third roller 33 enables the push member 32 to have higher flexibility during the movement process and adapt to the needs under different operating conditions. The combination of the connecting push rod 321 and the connecting rod 322 enhances the structural strength of the push member 32 and ensures stable operation under high pressure.

[0032] In one embodiment, the connecting rod 322 is connected to the connecting push rod 321 by bolts. This facilitates the installation, disassembly and replacement of components and improves maintenance efficiency. By adjusting the tightness of the bolts, fine-tuning between the connecting parts can be achieved to meet the needs under different operating conditions.

[0033] In one embodiment, the connecting rod 322 is riveted to the lower valve 31. Riveting makes the connection between the connecting push rod 321 and the lower valve 31 tighter, reduces the gap during the movement, and improves the accuracy of the linkage. The riveted connection method has high corrosion resistance and vibration resistance, and meets the needs of long-term operation of high-voltage switch cabinets.

[0034] In one embodiment, the upper valve 22 and the lower valve 31 are both installed with a return spring, so that when the middle door 1 is opened, the return spring can be used to return to the original closed position. The return spring stores elastic potential energy, which is released when the middle door 1 is opened, providing a driving force to pull the upper valve 22 and the lower valve 31 back to the initial closed position. The return spring ensures that when the middle door 1 is opened, the upper valve 22 and the lower valve 31 can be automatically closed, thereby improving the convenience and response speed of operation.

[0035] It should be noted that when the middle door 1 is closed, the lower valve 31 moves inward and the baffle inside the contact cover is opened, so that the trolley can freely move up and down from the isolation test position to the working position or from the working position to the isolation test position. Even if the electric chassis of the intelligent side-mounted removable switch cabinet drives the trolley to move up and down frequently, the lower valve 31 will not move with it, thereby avoiding damage caused by the jamming of the lower valve 31. When the middle door 1 is closed, the upper valve 22 and the lower valve 31 move together. When the upper valve 22 and the lower valve 31 are opened, the upper valve 22 and the lower valve 31 will not move with it, thereby avoiding damage caused by the jamming of the upper valve 22 and the lower valve 31. When the middle door 1 is opened, the upper valve 22 and the lower valve 31 are reset under the action of the corresponding reset springs, and the upper valve 22 and the lower valve 31 are closed. Only when the middle door 1 is opened, the valve is needed to close the live plug socket.

[0036] Therefore, the device can realize a convenient, simple and stable valve linkage locking mechanism. Through the interaction of various components, the upper valve 22 and the lower valve 31 can be fixedly opened all the time, so that the circuit breaker trolley can be moved from the isolation test position to the working position or from the working position to the isolation test position without the valve being stuck. Open the middle door 1, and the upper and lower valves 31 are closed through spring reset, and the valves return to the initial position. The valves are only needed to close the live plug socket when the door is open. At the same time, after the middle door 1 is closed, the design can realize remote operation and intelligent control through remote control, so that the intelligent side-mounted removable high-voltage switchgear can be unmanned and automatically controlled.

[0037] The working process of the valve linkage locking device of the side-mounted removable high-voltage switch cabinet of the present invention is as follows: When the middle door 1 of the high-voltage switch cabinet is closed, the push plate 21 connected to the middle door 1 starts to move.

[0038] The push plate 21 cooperates with the push portion 24 via the first roller 241 , and the push portion 24 moves accordingly, driving the linkage member 23 to rotate around the rotating portion 25 .

[0039] The linkage member 23 is composed of a first arm 23a and a second arm 23b, and the rotation causes the limiting member 262 to move along the first direction in the limiting groove 261. Through the cooperation of the guide rod 28 and the guide sleeve 27, the upper valve 22 is pushed to open along the first direction.

[0040] At the same time, the closing of the middle door 1 also drives the push member 32 in the lower valve interlocking assembly 30 to move. The push member 32 is composed of a connecting push rod 321 and a connecting rod 322. The connecting push rod 321 is connected to the middle door 1 through a third roller 33.

[0041] When the middle door 1 is closed, the pusher 32 pushes the lower valve 31 to open along the second direction (perpendicular to the first direction). The synchronous opening of the upper and lower valves 31 ensures that the valves always remain in a normally open state to prevent the valves from getting stuck during the operation of the trolley.

[0042] When the middle door 1 is opened, the upper valve 22 and the lower valve 31 are automatically reset and closed under the action of the reset spring, so that the upper valve 22 and the lower valve 31 return to the initial closed position. Only when the middle door 1 is opened, the valve needs to play the role of closing the live plug socket to ensure the safety of the equipment.

[0043] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A valve linkage locking device for a side-mounted removable high-voltage switchgear, characterized in that: include: Middle door (1); An upper valve interlocking assembly (20), the upper valve interlocking assembly (20) comprising: A push plate (21) connected to the middle door (1); Upper valve (22); A linkage member (23) comprising a pushing portion (24), a rotating portion (25) and an actuating portion (26), wherein the actuating portion (26) comprises a limiting groove (261) and a limiting member (262) movably connected to the limiting groove (261) and connected to the upper valve (22); wherein the push plate (21) cooperates with the pushing portion (24), and when the middle door (1) is closed, the push plate (21) can push the pushing portion (24) and cause the linkage member (23) to rotate around the rotating portion (25), so as to push and open the upper valve (22) along a first direction through the limiting member (262); A lower valve interlocking assembly (30) comprises a lower valve (31) and a pushing member (32) respectively connected to the middle door (1) and the lower valve (31); when the middle door (1) is closed, the pushing member (32) can push and open the lower valve (31) along a second direction, wherein the first direction and the second direction are perpendicular.

2. The valve linkage locking device of a side-mounted removable high-voltage switchgear according to claim 1 is characterized in that: The linkage member (23) comprises a first arm (23a) and a second arm (23b) which are connected to each other, one end of the first arm (23a) is configured as the pushing portion (24), a portion between the first arm (23a) and the second arm (23b) is configured as the rotating portion (25), and one end of the second arm (23b) is configured as the actuating portion (26).

3. The valve linkage locking device of a side-mounted removable high-voltage switch cabinet according to claim 1 is characterized in that: The pushing portion (24) comprises a first roller (241) in rolling contact with the pushing plate (21).

4. The valve linkage locking device of a side-mounted removable high-voltage switch cabinet according to claim 1 is characterized in that: The rotating part (25) comprises a fixing pin (251) hingedly connected to the partition plate of the high-voltage switch cabinet.

5. The valve linkage locking device of a side-mounted removable high-voltage switch cabinet according to claim 1 is characterized in that: The limiting member (262) comprises a pin shaft and a second roller (262a) rotatably connected to the pin shaft, and the second roller (262a) rolls in the limiting groove (261).

6. The valve linkage locking device of a side-mounted removable high-voltage switch cabinet according to claim 1 is characterized in that: It also includes a guide rod (28), and the upper valve (22) is provided with a guide sleeve (27) slidably connected to the guide rod (28).

7. The valve linkage locking device of a side-mounted removable high-voltage switch cabinet according to claim 1 is characterized in that: The pushing member (32) comprises a connecting push rod (321) and a connecting rod (322) which are connected to each other. The connecting push rod (321) is located on the inner side of the middle door (1) and is equipped with a third roller (33). The connecting rod (322) is connected to the lower valve (31).

8. The valve linkage locking device of a side-mounted removable high-voltage switch cabinet according to claim 7 is characterized in that: The connecting rod (322) and the connecting push rod (321) are connected via bolts.

9. The valve linkage locking device of a side-mounted removable high-voltage switch cabinet according to claim 7, characterized in that: The connecting rod (322) is riveted to the lower valve (31).

10. The valve linkage locking device of a side-mounted removable high-voltage switch cabinet according to claim 1, characterized in that: The upper valve (22) and the lower valve (31) are both equipped with return springs so that when the middle door (1) is opened, the return springs can be used for return.

Images