Interlocking device for rear sealing plate of power distribution switch cabinet

Abstract

The utility model relates to the field of switch cabinet mainly discloses a kind of interlocking device of switch cabinet rear sealing plate, including rear door frame, rear sealing plate, fixed plate, assembly shaft, rotating plate, drag bar, top plate, plug bar, the rear door frame inner wall is installed with several fixed seats, the position of fixed seat and plug bar one-to-one correspondence, fixed seat is fixedly installed with bushing, the end of plug bar far from top plate is inserted into bushing inside.The utility model sets up top plate on the inner wall of rear sealing plate, and installs plug bar on top plate, then uses the fixed frame and top spring set up on the inner wall of rear sealing plate to push top plate towards rear door frame direction, so that the end of plug bar is inserted into bushing on the inner wall of rear door frame, realize the interlocking between rear sealing plate and rear door frame, subsequent only need to rotate assembly shaft, can drive rotating plate rotation, so that two top plates are simultaneously pulled synchronous movement by drag bar, realize unlocking.

Description

Technical Field

[0001] This utility model relates to the field of switchgear, and more specifically, to an interlocking device for the rear sealing plate of a power distribution switchgear. Background Technology

[0002] A switchgear is a type of electrical equipment. External power lines first enter the main control switch inside the cabinet, and then enter the branch control switches. Each branch circuit is configured according to its needs. Examples include instruments, automatic control systems, motor magnetic switches, various AC contactors, etc. Some switchgear also have high-voltage and low-voltage compartments, and are equipped with high-voltage busbars, such as in power plants. Some also have underfrequency load shearing features to protect the main equipment.

[0003] Normally, switchgear only has one front door. However, in some special cases, there is a need to install a rear cover that can be temporarily opened at the rear of the switchgear. These rear covers are usually made openable by electromagnetic locks. However, electromagnetic locks are relatively expensive. If a simple mechanical structure is used for locking, it cannot be guaranteed when the rear cover can be opened from the outside or when it cannot be opened from the outside.

[0004] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0005] The purpose of this utility model is to provide an interlocking device for the rear sealing plate of a power distribution switchgear, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An interlocking device for the rear sealing plate of a power distribution switchgear includes a rear door frame, a rear sealing plate embedded inside the rear door frame, a fixing plate fixedly installed on the center of one side of the rear sealing plate facing the interior of the cabinet, an assembly shaft rotatably mounted on the fixing plate via a bearing seat, a rotating plate fixedly mounted on the assembly shaft, traction rods hinged to both ends of the rotating plate, a top plate connected to the end of the traction rod away from the rotating plate, a plurality of insert rods installed on the end of the top plate away from the traction rods, the insert rods being arranged along the height direction of the rear sealing plate, a plurality of fixing seats fixedly installed on the inner wall of the rear door frame, the fixing seats corresponding one-to-one with the positions of the insert rods, a socket fixedly installed on the fixing seats, and the end of the insert rod away from the top plate being inserted into the socket.

[0007] Furthermore, a lock sleeve is fixedly embedded in the middle of the outer wall of the rear sealing plate, and a lock cylinder is rotatably installed inside the lock sleeve. The end of the lock cylinder is fixedly connected to the end of the assembly shaft.

[0008] Furthermore, a slide rail symmetrically arranged along its height direction is installed on the inner wall of the rear sealing plate, and a slide block is fixedly installed on the end face of the top plate facing the rear sealing plate. The slide block is slidably installed on the slide rail, and a traction shaft is fixedly installed on the top plate. The end of the traction rod away from the rotating plate is connected to the traction shaft.

[0009] Furthermore, a fixing frame is fixedly installed on the inner wall of the rear sealing plate, a guide sleeve is installed through the fixing frame, a guide rod is fixedly installed on the side of the top plate facing the fixing frame, the guide rod is installed through the guide sleeve, and a tightening spring is provided between the top plate and the fixing frame, the tightening spring is sleeved on the outside of the guide rod.

[0010] Furthermore, a hinge frame is hinged at one corner of the top plate, and a locking rod is fixedly installed at the end of the hinge frame away from the top plate. A horizontally arranged guide rail is fixedly installed on the inner wall of the rear door frame, and a guide block is slidably installed on the guide rail. A locking groove is provided on the end face of the guide block away from the guide rail.

[0011] Compared with the prior art, the present invention has the following advantages: The present invention has a simple and reasonable structure and is easy to use and install. By setting a top plate on the inner wall of the rear sealing plate and installing a plug rod on the top plate, and then using the fixing frame and tightening spring set on the inner wall of the rear sealing plate to push the top plate toward the rear door frame, the end of the plug rod is inserted into the plug sleeve on the inner wall of the rear door frame, thereby realizing the interlock between the rear sealing plate and the rear door frame. Subsequently, by simply rotating the assembly shaft, the rotating plate can be driven to rotate, thereby pulling the two top plates to move synchronously through the traction rod to achieve unlocking. Moreover, the hinge frame and locking rod installed on the top plate can also cooperate with the locking groove outside the guide block slidably installed on the inner wall of the rear door frame to achieve locking, thereby locking the rear door frame and the rear sealing plate, which cannot be unlocked from the outside, thus improving security as needed. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a structural schematic diagram of an interlocking device for the rear sealing plate of a power distribution switchgear according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the rear door frame in the interlocking device of the rear sealing plate of a power distribution switchgear according to an embodiment of the present utility model; Figure 3This is a schematic diagram of the structure of the rear sealing plate in an interlocking device for the rear sealing plate of a power distribution switchgear according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the external structure of the rear sealing plate in an interlocking device for the rear sealing plate of a power distribution switchgear according to an embodiment of the present utility model. Figure 5 This is a schematic diagram of the structure of the transfer plate of the interlocking device of the rear sealing plate of a power distribution switchgear according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the top plate structure of the interlocking device of the rear sealing plate of a power distribution switchgear according to an embodiment of the present utility model.

[0014] Figure label: 1. Rear door frame; 2. Rear sealing plate; 3. Fixing plate; 4. Assembly shaft; 5. Turning plate; 6. Traction rod; 7. Top plate; 8. Insert rod; 9. Fixing seat; 10. Insert sleeve; 11. Lock sleeve; 12. Lock cylinder; 13. Slide rail; 14. Slide seat; 15. Traction shaft; 16. Fixing bracket; 17. Guide sleeve; 18. Guide rod; 19. Tightening spring; 20. Hinge frame; 21. Locking rod; 22. Guide rail; 23. Guide block; 24. Locking groove. Detailed Implementation

[0015] The utility model will now be further described in conjunction with the accompanying drawings and specific embodiments: Please see Figures 1 to 6 According to an embodiment of the present utility model, an interlocking device for the rear sealing plate of a power distribution switch cabinet includes a rear door frame 1, a rear sealing plate 2 is embedded inside the rear door frame 1, a fixing plate 3 is fixedly installed in the middle of one side of the rear sealing plate 2 facing the inside of the cabinet, an assembly shaft 4 is rotatably installed on the fixing plate 3 via a bearing seat, a rotating plate 5 is fixedly installed on the assembly shaft 4, a traction rod 6 is hinged to both ends of the rotating plate 5, a top plate 7 is connected to one end of the traction rod 6 away from the rotating plate 5, a plurality of insert rods 8 are installed on one end of the top plate 7 away from the traction rod 6, the insert rods 8 are arranged along the height direction of the rear sealing plate 2, a plurality of fixing seats 9 are fixedly installed on the inner wall of the rear door frame 1, the positions of the fixing seats 9 and the insert rods 8 are one-to-one, a plug sleeve 10 is fixedly installed on the fixing seat 9, the plug sleeve 10 is set directly opposite the plug rod 8, and the end of the plug rod 8 away from the top plate 7 is inserted into the plug sleeve 10.

[0016] External force can be used to adjust and rotate the assembly shaft 4, thereby driving the rotating plate 5 to rotate. The rotation of the rotating plate 5 will cause the top plate 7 to move through the traction rod 6. When the top plate 7 moves, it can drive the insertion rod 8 to move, so that the end of the insertion rod 8 is pulled out from the insertion sleeve 10, thereby disengaging the rear door frame 1 from the rear sealing plate 2.

[0017] A lock sleeve 11 is fixedly embedded in the middle of the outer wall of the rear sealing plate 2. A lock cylinder 12 is rotatably installed inside the lock sleeve 11, and the end of the lock cylinder 12 is fixedly connected to the end of the assembly shaft 4. With this configuration, the lock cylinder 12 can be rotated from outside the cabinet, thereby indirectly adjusting the rotation of the assembly shaft 4 and unlocking the rear sealing plate 2 from the rear door frame 1.

[0018] A slide rail 13, arranged symmetrically along its height, is installed on the inner wall of the rear sealing plate 2. A slide block 14 is fixedly installed on the end face of the top plate 7 facing the rear sealing plate 2. The slide block 14 is slidably mounted on the slide rail 13. A traction shaft 15 is fixedly installed on the top plate 7, and the end of the traction rod 6 away from the rotating plate 5 is connected to the traction shaft 15. The arrangement of the slide rail 13 and the slide block 14 can effectively support the installation of the top plate 7.

[0019] A fixing bracket 16 is fixedly installed on the inner wall of the rear sealing plate 2. A guide sleeve 17 is installed through the fixing bracket 16. A guide rod 18 is fixedly installed on the side of the top plate 7 facing the fixing bracket 16. The guide rod 18 is installed through the guide sleeve 17. A tensioning spring 19 is also provided between the top plate 7 and the fixing bracket 16. The tensioning spring 19 is sleeved on the outside of the guide rod 18. The tensioning spring 19 can hold the top plate 7 through the fixing bracket 16, so that the top plate 7 can have the force to drive the insertion rod 8 towards the insertion sleeve 10, so that the end of the insertion rod 8 can be automatically inserted into the insertion sleeve 10, realizing the self-locking between the rear door frame 1 and the rear sealing plate 2. When unlocking, simply rotate the assembly shaft 4 and release the rotation of the assembly shaft 4, and the top plate 7 will automatically return to its original position, thereby driving the end of the insertion rod 8 to be inserted into the insertion sleeve 10.

[0020] A hinge frame 20 is hinged at one corner of the top plate 7. The hinge frame 20 can be adjusted by swinging 90 degrees at the corner of the top plate 7. A locking rod 21 is fixedly installed at the end of the hinge frame 20 away from the top plate 7. A horizontally set guide rail 22 is fixedly installed on the inner wall of the rear door frame 1. A guide block 23 is slidably installed on the guide rail 22. A locking groove 24 is provided on the end face of the guide block 23 away from the guide rail 22. When the rear door frame 1 and the rear sealing plate 2 are locked, the position of the locking rod 21 can be changed by the hinge bracket 20 so that the locking rod 21 is in a horizontal state. At this time, the end of the locking rod 21 away from the hinge bracket 20 will be close to the guide rail 22. Then, the position of the guide block 23 on the guide rail 22 is controlled so that the locking groove 24 is placed outside the end of the locking rod 21, thus locking the locking rod 21 can be achieved. At this time, the top plate 7 will be completely locked, so the assembly shaft 4 cannot be controlled to rotate from the outside of the rear sealing plate 2, and the rear door frame 1 and the rear sealing plate 2 cannot be unlocked. This can completely lock the rear door frame 1 and the rear sealing plate 2 from the inside.

[0021] Through the above-described solution of this utility model, the structure of this utility model is simple and reasonable, and it is convenient to use and install. By setting a top plate 7 on the inner wall of the rear sealing plate 2 and installing a plug rod 8 on the top plate 7, and then using the fixing bracket 16 and the tightening spring 19 set on the inner wall of the rear sealing plate 2 to push the top plate 7 toward the rear door frame 1, the end of the plug rod 8 is inserted into the plug sleeve 10 on the inner wall of the rear door frame 1, thereby realizing the interlock between the rear sealing plate 2 and the rear door frame 1. Subsequently, by rotating the assembly shaft 4, the rotating plate 5 can be driven to rotate, thereby pulling the two top plates 7 to move synchronously through the traction rod 6 to achieve unlocking. Moreover, the hinge bracket 20 and the locking rod 21 installed on the top plate 7 can also cooperate with the locking groove 24 outside the guide block 23 slidably installed on the inner wall of the rear door frame 1 to achieve locking, thereby locking the rear door frame 1 and the rear sealing plate 2, which cannot be unlocked from the outside, thus improving security as needed.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An interlocking device for the rear sealing plate of a power distribution switchgear, comprising a rear door frame (1), characterized in that, The rear door frame (1) is fitted with a rear sealing plate (2). A fixing plate (3) is fixedly installed in the middle of one side of the rear sealing plate (2) facing the inside of the cabinet. An assembly shaft (4) is rotatably installed on the fixing plate (3) through a bearing seat. A rotating plate (5) is fixedly installed on the assembly shaft (4). A traction rod (6) is hinged to both ends of the rotating plate (5). A top plate (7) is connected to one end of the traction rod (6) away from the rotating plate (5). Several insert rods (8) are installed on one end of the top plate (7) away from the traction rod (6). The insert rods (8) are set along the height direction of the rear sealing plate (2). Several fixing seats (9) are fixedly installed on the inner wall of the rear door frame (1). The positions of the fixing seats (9) and the insert rods (8) correspond one-to-one. A sleeve (10) is fixedly installed on the fixing seat (9). The end of the insert rod (8) away from the top plate (7) is inserted into the sleeve (10).

2. The interlocking device for the rear sealing plate of a power distribution switchgear according to claim 1, characterized in that, A lock sleeve (11) is fixedly embedded in the middle of the outer wall of the rear sealing plate (2). A lock cylinder (12) is rotatably installed inside the lock sleeve (11). The end of the lock cylinder (12) is fixedly connected to the end of the assembly shaft (4).

3. The interlocking device for the rear sealing plate of a power distribution switchgear according to claim 2, characterized in that, The inner wall of the rear sealing plate (2) is symmetrically mounted with a slide rail (13) arranged along its height direction. A slide seat (14) is fixedly mounted on one end face of the top plate (7) facing the rear sealing plate (2). The slide seat (14) is slidably mounted on the slide rail (13). A traction shaft (15) is fixedly mounted on the top plate (7). The end of the traction rod (6) away from the rotating plate (5) is connected to the traction shaft (15).

4. The interlocking device for the rear sealing plate of a power distribution switchgear according to claim 3, characterized in that, A fixing frame (16) is also fixedly installed on the inner wall of the rear sealing plate (2). A guide sleeve (17) is installed through the fixing frame (16). A guide rod (18) is fixedly installed on the side of the top plate (7) facing the fixing frame (16). The guide rod (18) is installed through the guide sleeve (17). A tightening spring (19) is also provided between the top plate (7) and the fixing frame (16). The tightening spring (19) is sleeved on the outside of the guide rod (18).

5. The interlocking device for the rear sealing plate of a power distribution switchgear according to claim 4, characterized in that, A hinge frame (20) is hinged at one corner of the top plate (7). A locking rod (21) is fixedly installed at the end of the hinge frame (20) away from the top plate (7). A horizontally arranged guide rail (22) is fixedly installed on the inner wall of the rear door frame (1). A guide block (23) is slidably installed on the guide rail (22). A locking groove (24) is provided on the end face of the guide block (23) away from the guide rail (22).

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