Assembled structure of centrally installed switchgear valve and guide rail

Abstract

A centrally installed switchgear valve and guide rail assembly structure is characterized in that the centrally installed switchgear comprises a switchgear body and a valve fixedly connected with the switchgear body, and the centrally installed switchgear comprises a bottom plate fixed on the switchgear body; the guide rail is arranged on the bottom plate for guiding the circuit breaker to enter and exit the cabinet; the valve driving rod is arranged on the mounting plate and is driven by the circuit breaker to open and close the valve when the circuit breaker enters and exits the cabinet; wherein the guide rail is fixedly arranged on the bottom plate, and the distance between the guide rail and the valve is kept unchanged when the circuit breaker is switched on and switched off. An assembly type structure is adopted, the guide rail and the valve are integrated on the bottom plate in advance, modular installation is formed, the tedious process that customers purchase and assemble parts by themselves is reduced, assembly is avoided, and the installation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to an assembled structure of a central cabinet door and guide rail, belonging to the field of circuit breakers. Background Technology

[0002] Medium-voltage switchgear, also known as metal-clad medium-voltage withdrawable switchgear, is a type of high-voltage power distribution equipment. It is a complete indoor power distribution system for three-phase AC 50Hz single-busbar or double-busbar sectionalized systems. It is used to receive and distribute 3.6-12kV network power and to control, protect, monitor, and measure power circuits. Medium-voltage switchgear is mainly used in power plants, for power transmission from small and medium-sized generators, for power receiving and transmission in secondary substations of power systems, for power distribution in industrial and mining enterprises, and for starting large high-voltage motors.

[0003] The existing central switchgear guide rails are assembled from loose parts purchased by customers, which is very inconvenient to use. The guide rails are usually fixed on the side of the circuit breaker compartment to guide the circuit breaker trolley in and out of the cabinet. The valves are set on the rear plate of the circuit breaker compartment. Users cannot control the distance between the valves of each central switchgear and the circuit breaker guide rails to remain stable and consistent. Installing the guide rails on the cabinet body will cause problems such as the circuit breaker sinking, affecting the performance and service life. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide an assembled structure of a central cabinet door and guide rail.

[0005] An assembled structure for a centrally located cabinet door and guide rail, wherein the centrally located cabinet includes a cabinet body and a door fixedly connected to the cabinet body, and the assembled structure includes...

[0006] The base plate is fixed to the cabinet body;

[0007] Guide rails, mounted on the base plate, are used to guide the circuit breaker in and out of the cabinet;

[0008] The valve drive rod, located on the mounting plate, is used by the circuit breaker to open and close the valve when the circuit breaker enters or exits the cabinet.

[0009] The guide rail is fixed to the base plate so that the distance between it and the valve remains constant during circuit breaker opening and closing. The modular structure integrates the guide rail and valve into the base plate, reducing the need for customers to purchase and assemble components themselves, thus improving installation efficiency. Because the guide rail is fixed to the base plate and equipped with a valve drive rod, the distance between the valve and the guide rail remains stable throughout the circuit breaker's opening and closing process. Optimizing the guide rail's fixing method ensures it evenly bears the weight of the circuit breaker, preventing sagging due to its own weight or long-term use, and improving the overall structural stability and durability.

[0010] Preferably, the guide rail and the valve drive rod are respectively located on both sides of the base plate, and the guide rail is provided with a guide groove for the circuit breaker to enter the cabinet. The guide rail and the valve drive rod are respectively located on both sides of the base plate, so that the two are independent of each other, avoiding mutual interference, improving the stability of the overall structure, and ensuring that the circuit breaker can smoothly enter and exit the cabinet.

[0011] Furthermore, the guide rail is fixedly connected to the base plate by bolts. The bolted connection provides a reliable fastening effect, ensuring that the guide rail is not prone to loosening or displacement during long-term use, maintaining a stable guiding effect when the circuit breaker enters and exits the cabinet, and preventing operational deviations.

[0012] Preferably, the base plate is further provided with a self-locking structure, forming a locking groove between the two valve drive rods. The self-locking structure includes a push rod driven by the circuit breaker, which is linked to a locking piece disposed on the base plate. The locking piece has a first position where it engages with the locking groove when the circuit breaker is not in the cabinet, thus releasing the valve drive rod from locking the valve; and a second position where the circuit breaker drives the push rod to release the locking piece from engaging with the locking groove, thus releasing the valve drive rod from locking the valve. The valve self-locking design prevents the valve from being opened incorrectly when the circuit breaker is not installed correctly or is not in operation. This self-locking function ensures that the valve lock is only released after the circuit breaker enters the cabinet, making the use of the circuit breaker safer and avoiding door opening problems caused by misoperation or failure to install the circuit breaker.

[0013] Furthermore, the locking plate is provided with a push groove, and the end of the push rod extends into the push groove and engages with it. The push rod pushes the locking plate out of the locking groove through a rotational motion. This design, where the push rod rotates to disengage the locking plate from the locking groove, makes the movement of the locking plate more precise and controllable. When the push rod rotates, its end enters the push groove and pushes the locking plate out, effectively releasing the self-locking state of the valve. This design is relatively compact in structure, requiring no additional complex components, thus saving space and simplifying the design.

[0014] Furthermore, the bottom of the locking groove is arc-shaped, and the end of the push rod is arc-shaped to match the locking groove. In traditional straight groove designs, friction between the push rod and the groove can lead to wear or jamming over time. The arc-shaped design distributes pressure evenly, reducing this problem and extending the component's lifespan.

[0015] Furthermore, the base plate is provided with a mounting seat, the push rod has a rotating hole, and the mounting seat has a rotating arm extending into the rotating hole and rotatably connected to the push rod. A moving channel is formed within the mounting seat that slidably connects to the locking piece. The locking piece has a sliding groove, and the mounting seat is slidably connected to the locking piece via a connecting pin passing through the sliding groove. The cooperative design of the sliding groove and the connecting pin provides precise guidance, ensuring that the locking piece slides smoothly along a fixed trajectory during operation, avoiding free sliding or deviation. The rotating arm is rotatably connected to the push rod, used to push the rod to rotate around the rotating arm as the rotation center, thereby driving the locking piece to move within the moving channel, locking or unlocking the valve drive rod.

[0016] Furthermore, the locking plate has a reset plate at its end, and a first spring is sleeved on the reset plate. The end of the first spring is fixedly connected to the mounting base. This combination of the reset plate and the first spring allows the locking plate to automatically return to its initial state after being unlocked, based on the circuit breaker's release action. The spring force ensures that the locking plate quickly resets when no external force is applied, ensuring the self-locking system maintains a stable and consistent working state during use. This avoids problems caused by human error or external factors preventing the locking plate from resetting, facilitating subsequent use.

[0017] Furthermore, a second spring is connected to one side of the valve drive rod. The other end of the second spring is fixedly connected to the base plate, which has a push groove. The valve drive rod passes through the push groove and is connected to a push wheel, which is used by the circuit breaker to push the push wheel to drive the valve drive rod to open the valve. The locking plate and the valve drive rod are arranged vertically relative to each other. The second spring provides additional elasticity to the valve drive rod, allowing it to quickly return to its initial position after operation. The spring force ensures that the valve can close smoothly or return to a safe position, thus avoiding jamming or incomplete closure after unlocking, improving the stability and safety of the system. The vertical arrangement helps enhance the contact stability between the locking plate and the drive rod, reducing unlocking failures or misoperations due to offset or excessive tilting, thereby improving the overall safety of the system.

[0018] Preferably, the base plate is further provided with an interlocking assembly for linkage with the circuit breaker, the guide rail is provided with a drive groove, and the interlocking assembly includes a drive arm and a guide rod that extend out of the drive groove and are linked with the circuit breaker. The drive arm drives the guide rod to rotate under the pressing action of the circuit breaker.

[0019] The beneficial effects of this utility model are as follows: The modular structure allows the guide rail and valve to be pre-integrated on the base plate, forming a modular installation. This reduces the tedious process of customers purchasing and assembling parts themselves, improving installation efficiency by eliminating the need for assembly. Since the guide rail is fixed to the base plate and equipped with a valve drive rod, the distance between the valve and the guide rail remains stable throughout the circuit breaker's opening and closing process. By optimizing the guide rail's fixing method, it can evenly bear the weight of the circuit breaker, preventing sagging due to its own weight or long-term use, thus improving the overall structural stability and durability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0021] Figure 1 This is a structural diagram of the main body of this utility model;

[0022] Figure 2 This is a structural diagram from another perspective of the present invention;

[0023] Figure 3 This is a partial structural diagram of the present invention;

[0024] Figure 4 This is a structural diagram of the present invention with part of the mounting base removed;

[0025] Figure 5 for Figure 4 Detailed magnified structural diagram at point A;

[0026] Figure 6 for Figure 1 Detailed magnified structural diagram of point B in the middle;

[0027] In the diagram, 1. Base plate; 2. Mounting base; 21. Rotating arm; 22. Moving channel; 23. Through groove; 24. Push groove; 3. Guide rail; 31. Guide groove; 32. Drive groove; 4. Valve drive rod; 41. Locking groove; 42. Second spring; 43. Push wheel; 5. Self-locking structure; 51. Push rod; 511. Rotating hole; 52. Locking piece; 521. Push groove; 522. Sliding groove; 523. Reset piece; 524. First spring; 6. Interlocking assembly; 61. Guide rod; 62. Drive arm. Detailed Implementation

[0028] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0029] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0030] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0031] like Figure 1-6 The image shows an embodiment of an assembled structure for a centrally located cabinet door and guide rail according to this utility model. The centrally located cabinet includes a cabinet body and a door fixedly connected to the cabinet body. The assembled structure includes...

[0032] Base plate 1 is fixed to the cabinet body;

[0033] Guide rail 3, mounted on base plate 1, is used to guide the circuit breaker in and out of the cabinet;

[0034] The valve drive rod 4 is mounted on the mounting plate and is used by the circuit breaker to open and close the valve when the circuit breaker enters or exits the cabinet.

[0035] The guide rail 3 is fixedly mounted on the base plate 1 so that the distance between it and the valve remains unchanged when the circuit breaker is opened or closed.

[0036] The modular structure integrates the guide rail 3 and the valve onto the base plate 1, enabling modular installation and reducing the tedious process of customers procuring and assembling components themselves, thus improving installation efficiency. Since the guide rail 3 is fixed to the base plate 1 and equipped with the valve drive rod 4, the distance between the valve and the guide rail 3 remains stable throughout the circuit breaker's opening and closing process. By optimizing the fixing method of the guide rail 3, it can evenly bear the weight of the circuit breaker, preventing sagging due to its own weight or long-term use, and improving the overall structural stability and durability.

[0037] The guide rail 3 and the valve drive rod 4 are respectively located on both sides of the base plate 1. The guide rail 3 is provided with a guide groove 31 for the circuit breaker to enter the cabinet. The guide rail 3 and the valve drive rod 4 are respectively located on both sides of the base plate 1, so that the two are independent of each other, avoiding mutual interference, improving the stability of the overall structure, and ensuring that the circuit breaker can smoothly enter and exit the cabinet.

[0038] The guide rail 3 is fixedly connected to the base plate 1 by bolts. The bolt connection provides a reliable fastening effect, ensuring that the guide rail 3 is not prone to loosening or displacement during long-term use, and maintaining a stable guiding effect when the circuit breaker enters and exits the cabinet, preventing operational deviation. In addition to bolt fixing, the guide rail 3 can also be fixed by welding, riveting, or other methods.

[0039] In another embodiment of this application, unlike the previous embodiment, the base plate 1 is further provided with a self-locking structure 5, and a locking groove 41 is formed between the two valve drive rods 4. The self-locking structure 5 includes a push rod 51 driven by a circuit breaker. The push rod 51 is linked to a locking piece 52 provided on the base plate 1. The locking piece 52 has a first position in which it engages with the locking groove 41 when the circuit breaker is not in the cabinet, thereby releasing the valve drive rod 4 from locking the valve, and a second position in which the circuit breaker drives the push rod 51 to release the locking piece 52 from engaging with the locking groove 41, thereby releasing the valve drive rod 4 from locking the valve. The valve self-locking design can prevent the valve from being opened incorrectly when the circuit breaker is not installed correctly or is not in a working state. This self-locking function ensures that the valve lock can only be released after the circuit breaker enters the cabinet, allowing the valve to be opened, making the use of the circuit breaker safer and avoiding problems caused by misoperation or failure to install the circuit breaker.

[0040] The locking piece 52 is provided with a push groove 521, and the end of the push rod 51 extends into the push groove 521 and engages with it. The push rod 51 pushes the locking piece 52 out of the locking groove 41 by rotating. This design, where the push rod 51 rotates to drive the locking piece 52 out of the locking groove 41, makes the movement of the locking piece 52 more precise and controllable. When the push rod 51 rotates, its end enters the push groove 521 and pushes the locking piece 52 out of the locking groove 41, thereby effectively releasing the self-locking state of the valve. This design is relatively compact in structure, requires no additional complex components, thus saving space and simplifying the design.

[0041] The bottom of the locking groove 41 is arc-shaped, and the end of the push rod 51 is arc-shaped to match the locking groove 41. In a traditional straight groove design, friction between the push rod 51 and the groove may cause wear or jamming over time. The arc-shaped design can evenly distribute pressure, reduce the occurrence of such adverse phenomena, and extend the service life of the component.

[0042] The base plate 1 is provided with a mounting base 2. The push rod 51 is provided with a rotating hole 511. The mounting base 2 is provided with a rotating arm 21 extending into the rotating hole 511 and rotatably connected to the push rod 51. A moving channel 22 is formed in the mounting base 2, which is slidably connected to the locking piece 52. The locking piece 52 is provided with a sliding groove 522. The mounting base 2 is slidably connected to the locking piece 52 through the sliding groove 522 by a connecting pin. The cooperation design of the sliding groove 522 and the connecting pin provides a precise guiding effect, ensuring that the locking piece 52 can slide smoothly along a fixed trajectory during operation, avoiding free sliding or deviation. The rotating arm 21 is rotatably connected to the push rod 51 and is used to push the rod 51 to rotate around the rotating arm 21 as the rotation center, thereby driving the locking piece 52 to move within the moving channel 22 to lock or unlock the valve drive rod 4.

[0043] The locking piece 52 has a reset piece 523 at its end, and a first spring 524 is sleeved on the reset piece 523. The end of the first spring 524 is fixedly connected to the mounting base 2. The combination of the reset piece 523 and the first spring 524 allows the locking piece 52 to automatically return to its initial state after being unlocked, based on the circuit breaker's release action. The spring force allows the locking piece 52 to quickly reset when no external force is applied, ensuring that the self-locking system maintains a stable and consistent working state during use. This avoids the problem of the locking piece 52 failing to reset due to human error or external factors, facilitating subsequent use.

[0044] A second spring 42 is connected to the valve drive rod 4 on one side. The other end of the second spring 42 is fixedly connected to the base plate 1. The base plate 1 has a push groove 24. The valve drive rod 4 passes through the push groove 24 and is connected to a push wheel 43. The circuit breaker pushes the push wheel 43 to drive the valve drive rod 4 to open the valve. The locking piece 52 is vertically arranged relative to the valve drive rod 4. The second spring 42 provides additional elasticity to the valve drive rod 4, allowing the valve drive rod 4 to quickly return to its initial position after operation. The spring force ensures that the valve can close smoothly or return to a safe position, thereby avoiding jamming or incomplete closure of the valve after unlocking, improving the stability and safety of the system. The vertical arrangement helps to enhance the contact stability between the locking piece 52 and the drive rod, reducing unlocking failures or misoperations due to offset or excessive tilting, thereby improving the overall safety of the system.

[0045] The difference between this embodiment and the above embodiment is that the base plate 1 is also provided with an interlocking assembly 6 for linkage with the circuit breaker, and the guide rail 3 is provided with a drive groove 32. The interlocking assembly 6 includes a drive arm 62 and a guide rod 61 that extend out of the drive groove 32 and are linked with the circuit breaker. The drive arm 62 drives the guide rod 61 to rotate under the pressing action of the circuit breaker.

[0046] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

[0047] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed. The present invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. An assembled structure of a centrally located cabinet door and guide rail, wherein the centrally located cabinet includes a cabinet body and a door fixedly connected to the cabinet body, characterized in that: The assembled structure includes The base plate is fixed to the cabinet body; Guide rails, mounted on the base plate, are used to guide the circuit breaker in and out of the cabinet; The valve drive rod, located on the mounting plate, is used by the circuit breaker to open and close the valve when the circuit breaker enters or exits the cabinet. The guide rail is fixedly mounted on the base plate so that the distance between it and the valve remains unchanged when the circuit breaker is opened or closed.

2. The assembled structure of a centrally located cabinet door and guide rail as described in claim 1, characterized in that: The guide rail and the valve drive rod are respectively located on both sides of the base plate, and the guide rail is provided with a guide groove for the circuit breaker to enter the cabinet.

3. The assembled structure of a centrally located cabinet door and guide rail as described in claim 2, characterized in that: The guide rail is fixedly connected to the base plate by bolts.

4. The assembled structure of a centrally located cabinet door and guide rail as described in claim 1, characterized in that: The base plate is also provided with a self-locking structure, and a locking groove is formed between the two valve drive rods. The self-locking structure includes a push rod driven by a circuit breaker. The push rod is linked to a locking piece provided on the base plate. The locking piece has a first position in which it engages with the locking groove when the circuit breaker is not in the cabinet, thereby releasing the valve drive rod from locking the valve, and a second position in which the circuit breaker drives the push rod to release the locking piece from engaging with the locking groove, thereby releasing the valve drive rod from locking the valve.

5. The assembled structure of a centrally located cabinet door and guide rail as described in claim 4, characterized in that: The locking piece is provided with a push groove, and the end of the push rod extends into the push groove and abuts and engages with it. The push rod pushes the locking piece out of the locking groove by rotating.

6. The assembled structure of a centrally located cabinet door and guide rail as described in claim 5, characterized in that: The bottom of the locking groove is arc-shaped, and the end of the push rod is arc-shaped to match the locking groove.

7. The assembled structure of a centrally located cabinet door and guide rail as described in claim 4, characterized in that: The base plate is provided with a mounting seat, the push rod is provided with a rotating hole, the mounting seat is provided with a rotating arm extending into the rotating hole and rotatably connected to the push rod, the mounting seat forms a moving channel that is slidably connected to the locking piece, the locking piece is provided with a sliding groove, and the mounting seat is slidably connected to the locking piece through the sliding groove by a connecting pin.

8. The assembled structure of a centrally located cabinet door and guide rail as described in claim 7, characterized in that: The locking piece has a reset piece at its end, and a first spring is sleeved on the reset piece. The end of the first spring is fixedly connected to the mounting base.

9. The assembled structure of a centrally located cabinet door and guide rail as described in claim 4, characterized in that: A second spring is connected to one side of the valve drive rod, and the other end of the second spring is fixedly connected to the base plate. The base plate is provided with a push groove, and the valve drive rod passes through the push groove and is connected to a push wheel, which is used by the circuit breaker to push the push wheel to drive the valve drive rod to open the valve. The locking piece is vertically arranged relative to the valve drive rod.

10. The assembled structure of a centrally located cabinet door and guide rail as described in claim 1, characterized in that: The base plate is also provided with an interlocking assembly for linkage with the circuit breaker. The guide rail is provided with a drive groove. The interlocking assembly includes a drive arm and a guide rod that extend out of the drive groove and are linked with the circuit breaker. The drive arm drives the guide rod to rotate under the pressing action of the circuit breaker.

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