Cabinet door mechanism of explosion-proof cabinet body

Abstract

The utility model relates to the technical field of power distribution devices, in particular to an explosion-proof cabinet body cabinet door mechanism which comprises a door frame, a cabinet door, a limiting assembly and a lifting assembly, the door frame is used for being fixedly arranged on a cabinet body, the cabinet door is slidably arranged on the door frame in the vertical direction, the limiting assembly is used for limiting the cabinet door to move in the horizontal direction relative to the door frame, and the lifting assembly is used for lifting the cabinet door. And the lifting assembly is used for driving the cabinet door to be lifted until the cabinet door is separated from the constraint of the limiting assembly. Through cooperation of the vertically sliding cabinet door and the lifting assembly, the horizontal anti-explosion function of the limiting assembly is kept, and meanwhile rapid lifting and unlocking of the cabinet door are achieved.

Description

Technical Field

[0001] The present application relates to the field of power distribution devices, and in particular to an explosion-proof cabinet door mechanism. Background Art

[0002] The distribution device is a combination of electrical equipment used to receive, distribute and control electrical energy in the power system. It is widely used in power plants, substations, industrial and mining enterprises, buildings and other places.

[0003] The existing distribution cabinet door has a partial structure inserted into the cabinet body, thereby limiting the relative movement of the cabinet door and the cabinet body in the horizontal direction, achieving an explosion-proof effect. However, this type of door is difficult to open and the door opening operation is not smooth enough. Utility Model Content

[0004] In order to improve the convenience of opening the cabinet door, the present application provides an explosion-proof cabinet door mechanism.

[0005] The present application provides an explosion-proof cabinet door mechanism, which adopts the following technical solutions:

[0006] An explosion-proof cabinet door mechanism includes a door frame, a cabinet door, a limit assembly and a lifting assembly. The door frame is used to be fixedly set on the cabinet body, and the cabinet door is slidably set on the door frame along the vertical direction. The limit assembly is used to limit the cabinet door from moving horizontally relative to the door frame, and the lifting assembly is used to drive the cabinet door to lift until the cabinet door is free from the constraint of the limit assembly.

[0007] By adopting the above technical solution, the power distribution device limits the horizontal movement of the cabinet door through the limit assembly during normal operation, thereby playing an explosion-proof role. When the cabinet door needs to be opened for maintenance on the power distribution device, the cabinet door is lifted by the lifting assembly so that the limit assembly is released from the restraint state on the cabinet door, allowing the cabinet door to be opened horizontally or vertically; through the cooperation of the vertically sliding cabinet door and the lifting assembly, the cabinet door is quickly lifted and unlocked while maintaining the horizontal explosion-proof function of the limit assembly; this design solves the problem of opening jams and troublesome operations caused by the horizontal embedded structure of traditional explosion-proof cabinet doors, and significantly improves the operational fluency while ensuring explosion-proof safety.

[0008] Optionally, the lifting assembly includes a cam plate, a fixed plate and a guide structure, the cam plate can rotate relative to the door frame, the rotation axis of the cam plate extends in the horizontal direction, the cam plate can also move relative to the door frame in the horizontal direction perpendicular to the rotation axis of the cam plate, the cam plate includes an eccentrically rotating connection portion, the fixed plate is fixedly provided on the cabinet door, and the fixed plate is rotatably connected to the connection portion, and the guide structure is used to limit the cabinet door from sliding in the vertical direction.

[0009] By adopting the above technical solution, the operator can first rotate the cam disc, causing the connecting part to rotate eccentrically. As the cam disc rotates, the cabinet door is lifted via the fixed plate and guide structure. At this time, the cam disc can slide horizontally to eliminate the horizontal deviation caused by the rotating connecting part. Through the cooperation between the eccentric rotating connecting part of the cam disc and the fixed plate, the rotational motion is converted into the vertical lifting motion of the cabinet door. The cam disc has both horizontal movement freedom and can adaptively adjust the position deviation during the lifting process. The rigid connection between the fixed plate and the cabinet door ensures stable force transmission, while the guide structure precisely constrains the cabinet door to move only in the vertical direction. This structure achieves efficient force transmission with a compact mechanical layout, avoids deflection and jamming during lifting, and improves operational reliability.

[0010] Optionally, the guide structure includes a guide rod extending in a vertical direction and a guide hole for the guide rod to pass through and slide relatively, the guide rod is fixed relative to the door frame, a guide plate is fixed on the cabinet door, and the guide hole is opened through the guide plate.

[0011] By employing this technical solution, the sliding structure of the guide rod and guide hole provides a rigid vertical guide for the cabinet door, preventing horizontal deviation. The guide rod is fixed relative to the door frame to ensure a stable reference, while the guide plate moves synchronously with the cabinet door, ensuring that the cabinet door always slides along the preset trajectory. This design significantly reduces the risk of wear and deformation caused by long-term use, ensures smooth opening and closing of the cabinet door, and enhances the overall structural strength against explosive pressure.

[0012] Optionally, the guide plate is rotatably disposed on the guide rod, and the rotation axis of the guide plate extends along the extension direction of the guide rod.

[0013] By adopting the above technical solution, when the cabinet door is lifted to the point where the limit assembly is free from constraints, the cabinet door can rotate around the guide rod to open the cabinet door, so that the cabinet door can be lifted and lowered along the guide rod and rotated around the guide rod. The guide structure can realize two functions and has a simple structure.

[0014] Optionally, the lifting assembly further includes a handle, which is detachably connected to the connecting portion, and the handle is used to drive the cam plate to rotate.

[0015] By adopting this technical solution, the detachable handle facilitates the operator's application of force to rotate the cam plate, while the detachable design prevents accidental activation during non-operational periods. The handle directly drives the connecting part, creating a force-saving lever structure, reducing the torque required for lifting operations and improving ergonomics. Its detachable nature also facilitates maintenance or component replacement in confined spaces.

[0016] Optionally, the limiting assembly includes a limiting plate and a gusset plate. The limiting plate is fixedly provided on the door frame. A slot for inserting the gusset plate is provided on the upper surface of the limiting plate. The gusset plate is fixedly provided on the cabinet door, and the cabinet door can be lifted until the gusset plate exits the slot.

[0017] By employing this technical solution, the retaining plate's slot and the door's gusset plate form a mechanical interlock, completely limiting horizontal movement when the door is closed, meeting explosion-proof sealing requirements. After lifting, the gusset plate disengages from the slot, releasing the limit with a single action. This structure achieves dual safety state switching purely mechanically, eliminating the risk of electrical failure, and the recessed design of the slot enhances impact resistance.

[0018] Optionally, it further includes a limit block provided above the cabinet door, wherein the limit block can slide relative to the door frame, and the limit block is used to slide until it contacts the upper surface of the cabinet door.

[0019] By adopting this technical solution, the sliding stopper acts as a safety device: when the power distribution unit is operating normally, the stopper slides to contact the top of the cabinet door, preventing it from accidentally lifting and unlocking; during maintenance, it slides out of the way to free up operating space. This design provides additional explosion-proof redundancy in extreme operating conditions without affecting normal maintenance efficiency.

[0020] Optionally, an indicator plate is provided on the fixing plate, and the indicator plate is used to indicate the operating direction of the handle.

[0021] By adopting this technical solution, the indicator plate on the fixed plate clearly indicates the handle rotation direction, preventing the operator from misjudging the direction and causing the mechanism to jam due to reverse operation. This marking is directly linked to the mechanical action, significantly reducing training costs and the risk of operator error, making it particularly suitable for rapid emergency response in high-risk environments.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The vertically sliding cabinet door and the lifting assembly work together to achieve rapid lifting and unlocking of the cabinet door while maintaining the horizontal explosion-proof function of the limit assembly;

[0024] 2. The cabinet door can be lifted and lowered along the guide rod and can also rotate around the guide rod. The guide structure can realize two functions with a simple structure.

[0025] 3. The handle directly drives the connection part, forming a labor-saving lever structure, reducing the torque required for lifting operations and improving ergonomics. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of this application in an application scenario.

[0027] Figure 2It is a schematic diagram of the structure of this application.

[0028] Figure 3 It is a side cross-sectional view of the present application.

[0029] Figure 4 It is a structural diagram of the door frame in this application.

[0030] Figure 5 It is a structural diagram of the cabinet door in this application.

[0031] Figure 6 It is a structural diagram of the mounting block and the cam disc in this application.

[0032] Figure 7 yes Figure 1 Enlarged view of point A in the middle.

[0033] Explanation of the accompanying drawings: 1. Door frame; 2. Cabinet door; 3. Limiting assembly; 31. Limiting plate; 311. Slot; 32. Buckle plate; 33. Avoidance groove; 4. Lifting assembly; 41. Cam plate; 411. Connecting part; 42. Fixed plate; 43. Guide structure; 431. Guide rod; 432. Guide hole; 44. Handle; 5. Guide plate; 6. Limiting block; 7. Indicator nameplate; 8. Shielding member; 9. Mounting block; 91. Movable slot; 100. Fixed block. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-7 This application is described in further detail.

[0035] The embodiment of the present application discloses an explosion-proof cabinet door mechanism. Figure 1 and Figure 2 and Figure 3 The explosion-proof cabinet door mechanism includes a door frame 1, a cabinet door 2, a limit assembly 3, and a lifting assembly 4. The door frame 1 is fixedly mounted on the explosion-proof cabinet body, and the cabinet door 2 is vertically slidably mounted on the door frame 1. The limit assembly 3 is used to limit the horizontal movement of the cabinet door 2 relative to the door frame 1, and the lifting assembly 4 is used to drive the cabinet door 2 to lift until the cabinet door 2 is lifted out of the restraint of the limit assembly 3.

[0036] Reference Figure 3 and Figure 4 The limiting assembly 3 includes a limiting plate 31. The limiting plate 31 is fixed to the side wall of the door frame 1, closest to the cabinet body, via a bolt assembly. A vertically extending slot 311 is defined on the upper surface of the limiting plate 31. Assuming the cabinet door 2 and door frame 1 are arranged in a front-to-back direction, the slot 311 extends through the limiting plate 31 in a left-to-right direction, resulting in an L-shaped cross-section.

[0037] Reference Figure 3 and Figure 4 and Figure 5 The limiting assembly 3 also includes a buckle plate 32 for inserting into the card slot 311 and an avoidance groove 33 for the limiting plate 31 to be inserted and passed through. The avoidance groove 33 is opened in the cabinet door 2 along the front-to-back direction, and the buckle plate 32 is integrally formed on the upper groove wall of the avoidance groove 33. The left and right groove walls of the avoidance groove 33 are used to limit the limiting plate 31. The limiting assembly 3 can limit the cabinet door 2 in the horizontal direction. A shielding member 8 is fixedly installed on the surface of the cabinet door 2 away from the door frame 1, and the shielding member 8 is used to block and close the avoidance groove 33. In other embodiments, the card slot 311 may not penetrate the left and right side walls of the limiting plate 31, and the left and right side walls of the card slot 311 are used to interfere with the left and right side walls of the buckle plate 32 to limit the cabinet door 2 in the left and right directions.

[0038] Reference Figure 2 and Figure 6 The explosion-proof cabinet door mechanism also includes a mounting block 9 for fixed installation on the cabinet. The mounting block 9 and the cabinet door 2 are arranged in the left-right direction and have a movable slot 91 defined therein. The lifting assembly 4 includes a cam plate 41 that is rotatably and slidably mounted within the movable slot 91. The cam plate 41 is capable of rotating about a rotation axis extending in the front-to-back direction and of sliding in the left-to-right direction. The cam plate 41 includes an eccentrically rotating connection portion 411.

[0039] Reference Figure 2 and Figure 6 Lifting assembly 4 also includes a fixing plate 42 and a handle 44. Fixing plate 42 is fixedly connected to cabinet door 2 and rotatably connected to connecting portion 411. Handle 44 is removably connected to connecting portion 411 via a slot and an insert, allowing handle 44 to rotate cam plate 41. An indicator plate 7 is fixedly mounted on the surface of fixing plate 42 facing away from the cabinet body. This indicator plate 7 indicates the operating direction of handle 44.

[0040] Reference Figure 2 The lifting assembly 4 also includes a guide structure 43, which is used to guide the lifting and lowering of the cabinet door 2. The guide structure 43 includes a guide rod 431 and a guide hole 432. The guide rod 431 is a cylindrical straight rod, and fixed blocks 100 are fixedly installed on both axial ends of the guide rod 431. The fixed block 100 is used to be fixedly installed on the cabinet body. The guide rod 431 extends in the vertical direction, and the guide rod 431 and the mounting block 9 are arranged in the vertical direction. A plurality of guide plates 5 are fixedly installed on the cabinet door 2, and the plurality of guide plates 5 are arranged in the vertical direction. The guide holes 432 are opened on the guide plates 5 in the vertical direction, and the guide holes 432 are for the guide rods 431 to pass through. The fixed block 100 can limit the sliding of the guide plate 5 in the vertical direction.

[0041] Reference Figure 2 and Figure 6The guide plate 5 can also rotate the cabinet door 2 around the guide rod 431 through the guide hole 432, thereby opening the cabinet door 2. When the cabinet door 2 rotates, the fixed plate 42 rotates the cam plate 41. The mounting block 9 is sufficiently large in the front-to-back direction, and the movable groove 91 extends through the mounting block 9 in the front-to-back direction, allowing the cam plate 41 to rotate around the guide rod 431 in the movable groove 91 without interfering with the mounting block 9 or the cabinet body.

[0042] Reference Figure 7 The explosion-proof cabinet door mechanism also includes a stopper 6, which is mounted on the cabinet body and slides forward and backward. The stopper 6 is located above the cabinet door 2. When the power distribution device is operating, the operator uses the hand-crank mechanism to move the circuit breaker in the cabinet to a suitable position. This drives the stopper 6 to slide into the lifting path of the cabinet door 2, where it contacts the upper surface of the cabinet door 2, preventing it from rising.

[0043] The implementation principle of an explosion-proof cabinet door mechanism in an embodiment of the present application is as follows: the operator installs the handle 44 on the connecting part 411, rotates the handle 44, drives the cam plate 41 to rotate, thereby driving the cabinet door 2 to lift, and the cabinet door 2 is lifted until the buckle plate 32 is disengaged from the slot 311. At this time, the cabinet door 2 can be rotated to open the cabinet door 2.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An explosion-proof cabinet door mechanism, characterized by: The cabinet door (2) comprises a door frame (1), a cabinet door (2), a limiting assembly (3) and a lifting assembly (4), wherein the door frame (1) is fixedly arranged on the cabinet body, the cabinet door (2) is slidably arranged on the door frame (1) in a vertical direction, the limiting assembly (3) is used to limit the cabinet door (2) from moving in a horizontal direction relative to the door frame (1), and the lifting assembly (4) is used to drive the cabinet door (2) to be lifted until the cabinet door (2) is free from the constraint of the limiting assembly (3).

2. The explosion-proof cabinet door mechanism according to claim 1, characterized in that: The lifting assembly (4) includes a cam disc (41), a fixing plate (42) and a guide structure (43); the cam disc (41) is rotatable relative to the door frame (1); the rotation axis of the cam disc (41) extends in the horizontal direction; the cam disc (41) is also movably relative to the door frame (1) in the horizontal direction along a direction perpendicular to the rotation axis of the cam disc (41); the cam disc (41) includes an eccentrically rotating connecting portion (411); the fixing plate (42) is fixedly disposed on the cabinet door (2), and the fixing plate (42) is rotatably connected to the connecting portion (411); and the guide structure (43) is used to limit the cabinet door (2) from sliding in the vertical direction.

3. The explosion-proof cabinet door mechanism according to claim 2, characterized in that: The guide structure (43) comprises a guide rod (431) extending in a vertical direction and a guide hole (432) for the guide rod (431) to pass through and slide relatively therewith; the guide rod (431) is fixedly arranged relative to the door frame (1); a guide plate (5) is fixedly arranged on the cabinet door (2); and the guide hole (432) is formed through the guide plate (5).

4. The explosion-proof cabinet door mechanism according to claim 3, characterized in that: The guide plate (5) is rotatably arranged on the guide rod (431), and the rotation axis of the guide plate (5) extends along the extension direction of the guide rod (431).

5. The explosion-proof cabinet door mechanism according to claim 3, characterized in that: The lifting assembly (4) further includes a handle (44), the handle (44) being detachably connected to the connecting portion (411), and the handle (44) being used to drive the cam plate (41) to rotate.

6. The explosion-proof cabinet door mechanism according to claim 1, characterized in that: The limiting assembly (3) comprises a limiting plate (31) and a gusset plate (32); the limiting plate (31) is fixedly arranged on the door frame (1); a slot (311) for inserting the gusset plate (32) is provided on the upper surface of the limiting plate (31); the gusset plate (32) is fixedly arranged on the cabinet door (2); and the cabinet door (2) can be lifted until the gusset plate (32) exits the slot (311).

7. The explosion-proof cabinet door mechanism according to claim 1, characterized in that: It also includes a limit block (6) provided above the cabinet door (2), wherein the limit block (6) is capable of sliding relative to the door frame (1), and the limit block (6) is used to slide until it contacts the upper surface of the cabinet door (2).

8. The explosion-proof cabinet door mechanism according to claim 5, characterized in that: An indicator nameplate (7) is provided on the fixing plate (42), and the indicator nameplate (7) is used to indicate the operating direction of the handle (44).

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