Novel front lower door interlocking environment-friendly cabinet

Abstract

The utility model discloses a novel front lower door interlocking environment-friendly cabinet, which relates to the technical field of switch cabinets, and comprises a cabinet body, a control room and a maintenance room, and the outer sides of the control room and the maintenance room are respectively hinged with an upper end door and a lower end door; a grounding controller is arranged in the control chamber, a limiting disc and an operation handle are arranged on the grounding controller, a limiting convex plate is arranged on the outer side of the limiting disc, a hinge plate and a clamping seat are arranged below the grounding controller, an adapter plate is connected to the outer side of the clamping seat through a bolt, and an adjusting screw rod is rotationally connected to the upper portion of the adapter plate through a bearing; an interlocking rod is in threaded connection with the lower portion of the adjusting screw rod, a fixing frame is arranged on one side, corresponding to the lower end door, of the cabinet body, a door connecting piece is arranged above the fixing frame, the lower end door is hinged to the lower portion of the door connecting piece, an L-shaped bayonet is formed in the fixing frame, and limiting pins are symmetrically connected to the two sides of the lower end door through threads. According to the scheme, whether hot-line operation is carried out or not can be selected according to needs, maintenance is convenient, and maintenance convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of switch cabinet technology, specifically a novel front-lower-door interlocking environmental protection cabinet. Background Technology

[0002] Switchgear is a commonly used electrical device in power grids, used for opening, closing, controlling, and protecting electrical equipment during power generation, transmission, distribution, and energy conversion. It typically includes circuit breakers, grounding switches, load switches, operating mechanisms, contactors, and various protective devices. The function of preventing accidental entry into energized compartments is generally achieved through an interlocking device between the grounding switch and the switchgear door; that is, when the switchgear door is open, the grounding switch cannot trip, and when the grounding switch is tripped, the door cannot be opened.

[0003] In certain special circumstances, live-line maintenance may be required. These circumstances typically include:

[0004] Emergency situations: For example, a serious fault occurs in the power system, which may lead to greater losses or dangers if not dealt with immediately;

[0005] Uninterrupted power supply is essential in some critical industrial or commercial facilities, as it would affect production or services. For example, hospital operating rooms and data centers cannot afford power outages, even during maintenance.

[0006] Technical limitations: In some situations, a complete power outage is not possible due to technical limitations. For example, maintenance work on certain high-voltage transmission lines is difficult to achieve by shutting down the entire line due to the length and complexity of the lines.

[0007] Economic factors: In some cases, the cost of a power outage can be very high. For example, if a large chemical plant's production line stops operating, it could result in significant economic losses. Therefore, to save costs, live-line maintenance may be chosen.

[0008] However, existing bottom-door interlocking environmental protection cabinets cannot select whether to operate with electricity as needed for maintenance, reducing the ease of use of the cabinets. To address this, we propose a new type of front-bottom-door interlocking environmental protection cabinet. Utility Model Content

[0009] The purpose of this utility model is to provide a new type of front-lower-door interlocking environmental protection cabinet to solve the problem mentioned in the background art that the existing lower-door interlocking environmental protection cabinets cannot select whether to operate with electricity according to maintenance needs, which reduces the convenience of using the environmental protection cabinet.

[0010] To achieve the above objectives, this utility model provides the following technical solution: a novel front-lower door interlocking environmental protection cabinet, comprising a cabinet body, a control room and a maintenance room, wherein the control room and the maintenance room are respectively hinged to an upper door and a lower door on their outer sides;

[0011] The control room is equipped with a grounding controller, which has a limit plate and an operating handle. The limit plate has a limit protrusion on its outer side. The grounding controller is equipped with a hinge plate and a locking seat below it. The hinge plate is fixedly installed on the cabinet. The hinge plate has a hinge rod and a guide pin arranged sequentially from the inside to the outside. The hinge rod and the guide pin are parallel to each other, and a return spring is movably sleeved above the hinge rod. The locking seat is movably sleeved on the hinge rod and the guide pin.

[0012] An adapter plate is bolted to the outside of the card seat. An adjusting screw is rotatably connected to the top of the adapter plate via a bearing. An interlocking rod is threaded to the bottom of the adjusting screw. A guide rod is provided on one side of the interlocking rod corresponding to the adapter plate. The guide rod is threaded to the interlocking rod. A guide groove is provided on the adapter plate, and the guide rod is movably connected inside the guide groove.

[0013] A fixed frame is provided on one side of the cabinet corresponding to the lower door. A door connector is provided above the fixed frame. The lower door is hinged to the lower part of the door connector. An L-shaped slot is provided on the fixed frame. Limiting pins are symmetrically connected to both sides of the lower door by threads. The limiting pins are movably engaged in the L-shaped slot.

[0014] Preferably, the door connector has a locking interface on its upper part for engaging the interlocking rod.

[0015] Preferably, the center line of the limiting pin and the center line of the adjusting screw are perpendicular to each other, and the adjusting screw is located above the limiting pin.

[0016] Preferably, the lower door is snapped onto the outside of the fixed frame, and the lower door is located below the upper door.

[0017] Preferably, both the hinge rod and the guide pin are parallel to the center line of the adjusting screw.

[0018] Preferably, the adapter plate is L-shaped, and the interlocking rod is located below the adapter plate.

[0019] Preferably, an inverted "T"-shaped locking head is provided below the interlocking rod.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This new type of front-lower-door interlocking environmental protection cabinet, in order to improve operational safety during maintenance, can be operated by closing the grounding controller, at which point the power inside the switch cabinet is cut off, facilitating safe maintenance. In special circumstances where live maintenance is necessary, manual operation only requires rotating the adjusting screw. After rotating the adjusting screw, combined with the guide rod sliding inside the guide groove, the interlocking rod can move upward. Thus, even when the grounding controller is not closed, the interlocking rod can move upward by 18mm. The limit pin corresponds to the notch position of the L-shaped bayonet, allowing the lower door to open. Depending on the maintenance situation, live maintenance operations can be easily selected, improving the convenience of maintenance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram showing the control room of this utility model with the upper door removed.

[0024] Figure 3 This is a schematic diagram showing the lower door of the maintenance room of this utility model in the removed state;

[0025] Figure 4 For the present utility model Figure 3 A magnified structural diagram at point M;

[0026] Figure 5 This is a schematic diagram showing the connection state of the card holder and interlocking rod of this utility model;

[0027] Figure 6 This is a schematic diagram of the connection structure between the card holder and the adapter plate of this utility model;

[0028] Figure 7 This is a schematic diagram of the lower door structure of this utility model;

[0029] Figure 8 This is a schematic diagram of the interlocking rod structure of this utility model.

[0030] In the diagram: 1. Cabinet; 2. Inspection room; 21. Lower door; 22. Fixed frame; 23. L-shaped bayonet; 24. Limit pin; 25. Door connector; 26. Snap-fit ​​interface; 3. Control room; 31. Upper door; 32. Grounding controller; 33. Limit plate; 34. Operating handle; 35. Limiting protrusion; 36. Snap-fit ​​seat; 37. Hinge plate; 371. Guide pin; 372. Hinge rod; 373. Return spring; 38. Adapter plate; 381. Guide groove; 39. Interlocking rod; 391. Adjusting screw; 392. Guide rod. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example: Please refer to Figure 1-8 This utility model provides a technical solution: a novel front-lower door interlocking environmental protection cabinet, including a cabinet body 1, a control room 3 and a maintenance room 2. The control room 3 and the maintenance room 2 are respectively hinged to an upper door 31 and a lower door 21 on their outer sides. The upper door 31 is located above the lower door 21, and the upper door 31 and the lower door 21 have the same width.

[0033] Please see Figure 2 The control room 3 is equipped with a grounding controller 32. The grounding controller 32 is equipped with a limit plate 33 and an operating handle 34. The operating handle 34 can make the limit plate 33 rotate. It is worth noting that the grounding controller 32 is a grounding control switch in the prior art, and the operating handle 34 is an operating component for the grounding control switch.

[0034] Furthermore, a limiting protrusion 35 is provided on the outer side of the limiting plate 33, and the limiting protrusion 35 and the limiting plate 33 are integrally formed. A hinge plate 37 and a locking seat 36 are provided below the grounding controller 32, wherein the limiting protrusion 35 and the locking seat 36 are in movable contact. The hinge plate 37 is fixedly installed on the cabinet 1. A hinge rod 372 and a guide pin 371 are arranged sequentially from the inside to the outside on the hinge plate 37. The hinge rod 372 and the guide pin 371 are parallel to each other, and a return spring 373 is movably sleeved above the hinge rod 372. The return spring 373 ensures that, in the initial state, the locking seat 36 is positioned at a certain position on the hinge rod 372. The return spring 373 is a tension spring. The locking seat 36 is movably sleeved on the hinge rod 372 and the guide pin 371.

[0035] Please see Figure 5 Hehe Figure 6 An adapter plate 38 is bolted to the outside of the locking seat 36. The adapter plate 38 has an "L"-shaped longitudinal section. An adjusting screw 391 is rotatably connected to the top of the adapter plate 38 via a bearing. The hinge rod 372 and the guide pin 371 are both parallel to the center line of the adjusting screw 391. The bearing connection facilitates the rotational adjustment of the adjusting screw 391.

[0036] Please see Figure 5 and Figure 8The adjusting screw 391 is threadedly connected to an interlocking rod 39. The adapter plate 38 is L-shaped, and the interlocking rod 39 is located below the adapter plate 38. An inverted T-shaped clamp is provided below the interlocking rod 39. A guide rod 392 is provided on one side of the adapter plate 38 corresponding to the interlocking rod 39. The guide rod 392 is threadedly connected to the interlocking rod 39. A guide groove 381 is provided on the adapter plate 38, and the guide rod 392 is movably connected inside the guide groove 381. After rotating the adjusting screw 391, and with the guide rod 392 sliding inside the guide groove 381, the interlocking rod 39 can move upward or downward. Thus, even when the grounding controller 32 is not closed, the interlocking rod 39 can move upward by 18mm, allowing the lower door 21 to be opened. This facilitates live maintenance operations according to the maintenance situation, further improving the operability and portability of the switchgear.

[0037] Please see Figure 7 In this embodiment, a fixing frame 22 is provided on one side of the cabinet body 1 corresponding to the lower door 21. The lower door 21 is snapped onto the outside of the fixing frame 22, and the lower door 21 is located below the upper door 31. A door connector 25 is provided above the fixing frame 22, and a locking interface 26 for locking the interlocking rod 39 is provided above the door connector 25. By locking the interlocking rod 39 onto the locking interface 26, the separation and installation of the door connector 25 and the interlocking rod 39 can be facilitated.

[0038] Furthermore, the lower door 21 is hinged below the door connector 25, and an L-shaped latch 23 is provided on the fixed frame 22. Limiting pins 24 are symmetrically connected to both sides of the lower door 21 by threads, and the limiting pins 24 are movably engaged in the L-shaped latch 23. The center line of the limiting pin 24 and the center line of the adjusting screw 391 are perpendicular to each other, and the adjusting screw 391 is located above the limiting pin 24. The lower door 21 swings around its hinge with the door connector 25, making the lower door 21 vertical. At this time, if the position of the limiting pin 24 corresponds to the notch of the L-shaped latch 23, the limiting pin 24 can be engaged with the fixed frame 22. As the door connector 25 moves down, it drives the lower door 21 to move, so that the limiting pin 24 can be offset from the notch of the L-shaped latch 23, realizing the engagement of the lower door 21 and the door connector 25. Similarly, after the interlocking rod 39 moves 18mm from bottom to top, the limiting pin 24 can be aligned with the notch of the L-shaped latch 23, and the lower door 21 can be opened.

[0039] Working Principle: This new type of front-lower-door interlocking environmental protection cabinet allows for adjustments based on actual conditions during maintenance, allowing for the selection of whether energized operation is necessary. Initially, when the grounding controller 32 is open, the limiting plate 35 on the limit plate 33 presses against the locking seat 36, and the return spring 373 is stretched. At this time, the limiting pin 24 on the lower door 21 engages with the lower end of the L-shaped latch 23, preventing the lower door 21 from disengaging from the L-shaped latch 23. If energized operation is not required, manually opening the upper door 31 and operating the handle 34 will close the grounding controller 32, causing the limit plate 33 to rotate. This allows the limiting plate 35 on the limit plate 33 to swing counterclockwise upwards, disengaging from the locking seat 36. Through the elastic reset action of the return spring 373, the locking seat 36 moves upwards along the axis of the hinge rod 372 and guide pin 371, thereby driving the interlocking rod 39 downwards. When the lower door 21 is moved, the limit pin 24, which is threaded onto the lower door 21, moves with it. This causes the limit pin 24 to move 18mm upwards from the lower end of the L-shaped latch 23, corresponding to the notch position. In this state, the lower door 21 can be opened for maintenance. When maintenance is required while the power is on, without needing to disconnect the power, the grounding controller 32 is tripped, and the limit plate 35 still presses against the latch seat 36. The operator only needs to rotate the adjusting screw 391. After rotating the adjusting screw 391, and with the guide rod 392 sliding inside the guide groove 381, the interlocking rod 39 moves upwards. This allows the interlocking rod 39 to move upwards 18mm even when the grounding controller 32 is not closed, thus opening the lower door 21. This facilitates selecting live maintenance operations based on the maintenance situation, improving the convenience of maintenance.

[0040] 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. A new front lower door interlocking environmental protection cabinet, comprising a cabinet body (1), a control chamber (3) and an inspection chamber (2), characterized in that: The control room (3) and the maintenance room (2) are respectively hinged with upper end door (31) and lower end door (21) outside; The inside of the control room (3) is provided with grounding controller (32), the grounding controller (32) is provided with limit disc (33) and operating handle (34), the limit disc (33) is provided with limit lug (35) outside, the grounding controller (32) is provided with hinged plate (37) and clamping seat (36) below, the hinged plate (37) is fixedly installed on the cabinet (1), the hinged plate (37) is sequentially provided with hinged rod (372) and guide pin (371) from inside to outside, the hinged rod (372) and guide pin (371) are parallel to each other, and the hinged rod (372) is movably sleeved with reset spring (373) above, the clamping seat (36) is movably sleeved on the hinged rod (372) and guide pin (371); The outside of the clamping seat (36) is connected with adapter plate (38) through bolt, the upper side of the adapter plate (38) is rotatably connected with adjusting screw (391) through bearing, the lower side of the adjusting screw (391) is threadedly connected with interlocking rod (39), the side of the interlocking rod (39) corresponding to the adapter plate (38) is provided with guide rod (392), the guide rod (392) is connected with the interlocking rod (39) through thread, the adapter plate (38) is provided with guide groove (381), and the guide rod (392) is movably connected in the guide groove (381). The side of the cabinet (1) corresponding to the lower end door (21) is provided with fixed frame (22), the upper side of the fixed frame (22) is provided with door connecting piece (25), the lower end door (21) is hinged below the door connecting piece (25), the fixed frame (22) is provided with L-shaped bayonet (23), and the lower end door (21) is symmetrically connected with limit pin (24) through thread on both sides, the limit pin (24) is movably clamped in the L-shaped bayonet (23).

2. A new front lower door interlocking environment-friendly cabinet according to claim 1, characterized in that: The upper side of the door connecting piece (25) is provided with clamping hole (26) for clamping interlocking rod (39).

3. A new front lower door interlocking environment-friendly cabinet according to claim 1, characterized in that: The center line of the limit pin (24) and the center line of the adjusting screw (391) are perpendicular to each other, and the adjusting screw (391) is arranged above the limit pin (24).

4. A new front lower door interlocking environment-friendly cabinet according to claim 1, characterized in that: The lower end door (21) is clamped outside the fixed frame (22), and the lower end door (21) is arranged below the upper end door (31).

5. A new front lower door interlocking environment-friendly cabinet according to claim 1, characterized in that: The hinged rod (372) and the guide pin (371) are parallel to the center line of the adjusting screw (391).

6. A new front lower door interlocking environment-friendly cabinet according to claim 1, characterized in that: The adapter plate (38) is in the shape of "L", and the interlocking rod (39) is arranged below the adapter plate (38).

7. A new front lower door interlocking environment-friendly cabinet according to claim 1, characterized in that: The lower side of the interlocking rod (39) is provided with inverted "T" shaped clamping head.

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