Novel mechanical interlocking device for rear lower door of environment-friendly gas cabinet

Abstract

The utility model discloses a novel mechanical interlocking device for a rear lower door of an environment-friendly gas cabinet in the technical field of ring main units, which comprises a grounding operation shaft, a safety shielding structure matched with the grounding operation shaft, the safety shielding structure is connected with a connecting rod structure, the connecting rod structure is connected with a clamping lock structure, and the clamping lock structure is matched with the rear lower door. And the other side of the rear lower door is matched with a door clamping structure. Through the cooperation of the door clamping structure and the clamping lock structure, the connecting rod structure is driven, so that the connecting rod structure operates the safety shielding structure to shield the grounding operation shaft, that is, when the rear lower door is opened, the safety shielding structure shields the grounding operation shaft to form a locking state, and opening and closing operation cannot be performed; when the switch is unlocked, the safety shielding structure exposes the grounding operation shaft to form an unlocking state, so that the switch operation can be carried out, the rear lower door needs to be closed when the switch is unlocked each time, the front and rear power interfaces of the cabinet body can be observed in place, and the safety is ensured.

Description

Technical Field

[0001] The utility model relates to a rear lower door mechanical interlocking device in the technical field of ring network cabinets. Background Art

[0002] In the prior art, the power interface in the ring network cabinet is set at the front of the cabinet, which is convenient for connecting three-phase electricity. However, when the power interface at the front is damaged, it must be repaired and replaced before it can be used. In an emergency, it will cause time and work delays, or the cabinet needs to be used as a temporary power output. Therefore, a backup power interface will be opened at the rear of the cabinet to play a role in the above special circumstances. However, in this way, power interfaces are set at the front and back of the cabinet, and the previous front-mounted interlocking mechanism can only deal with the front power safety, but cannot effectively deal with the rear power safety. Utility Model Content

[0003] The utility model aims to provide a novel mechanical interlocking device for the rear lower door of an environmentally friendly gas cabinet, which can effectively protect the front and rear locking safety and improve the safety.

[0004] To achieve the above-mentioned purpose, the utility model provides a new type of mechanical interlocking device for the rear lower door of an environmentally friendly gas cabinet, including a grounded operating shaft, the grounded operating shaft is equipped with a safety shielding structure, the safety shielding structure is connected to the connecting rod structure, the connecting rod structure is connected to the locking structure, the locking structure cooperates with the rear lower door, and the other side of the rear lower door is equipped with a door card structure.

[0005] Compared with the prior art, the beneficial effect of the utility model lies in that, through the cooperation of the door card structure and the locking structure, the connecting rod structure is driven, so that the connecting rod structure operates the safety shielding structure to shield the grounding operating shaft, that is, when the rear lower door is opened, the safety shielding structure shields the grounding operating shaft, forming a locked state, so that the switch operation cannot be performed; when the rear lower door is closed, the safety shielding structure exposes the grounding operating shaft, forming an unlocked state, so that the switch operation can be performed. In this way, each time the rear lower door is unlocked, the rear lower door needs to be closed, so that the front and rear power interfaces of the cabinet can be observed in place, thereby ensuring safety.

[0006] As a further improvement of the utility model, the safety shielding structure includes a safety baffle that cooperates with the grounding operating shaft, the safety baffle is arranged on the outer side surface of the movable bracket, the movable bracket is sleeved on the mounting rod, both ends of the mounting rod are connected to the reset bracket, the reset bracket is arranged on the load switch, a spring is sleeved on the mounting rod, the upper end of the spring is connected to the lower end of the movable bracket, the lower end of the spring is connected to the lower end of the reset bracket, the movable bracket is connected to the connecting rod structure, the inner side surface of the movable bracket is hinged to the rear end of the rocker arm, the middle part of the rocker arm is hinged to the load switch, the front end of the rocker arm matches with the pressing piece sleeved on the grounding operating shaft, and a rocker groove is opened at the rear part of the rocker arm, and the rocker groove is equipped with a rocker pin.

[0007] In this way, the connecting rod structure drives the safety baffle to move upward, blocking the grounding operation shaft, entering a locked state, and the movable bracket is driven downward by the connecting rod structure, then the safety baffle moves downward, exposing the grounding operation shaft, thereby entering an unlocked state.

[0008] As a further improvement of the present invention, the connecting rod structure includes a vertical connecting rod 1, the upper end of the vertical connecting rod 1 is connected to the movable bracket, the lower end of the vertical connecting rod 1 is hinged to one end of the horizontal connecting rod 1, the middle part of the horizontal connecting rod 1 is hinged to the upper end of the support frame, the other end of the horizontal connecting rod 1 is hinged to the upper end of the vertical connecting rod 2, the lower end of the vertical connecting rod 2 is hinged to one end of the horizontal connecting rod 2, a vertical waist groove 1 is provided on the vertical connecting rod 2, the vertical waist groove 1 is equipped with a vertical pin 1, the vertical pin 1 is connected to the side panel of the environmental protection cabinet body, the other end of the horizontal connecting rod 2 is hinged to one end of the horizontal connecting rod 3, a horizontal pin 1 is provided in the middle part of the horizontal connecting rod 2, the horizontal pin 1 is connected to the side panel of the safe body, the other end of the horizontal connecting rod 3 is hinged to the locking structure, a horizontal waist groove 1 is provided on the horizontal connecting rod 3, the horizontal waist groove 1 is equipped with a horizontal pin 2, and the horizontal pin 2 is connected to the side panel of the environmental protection cabinet body.

[0009] In this way, through the cooperation of various connecting rods, the opening and closing status of the rear lower door is transmitted to the safety baffle, so that the safety baffle can correspond to the opening and closing of the rear lower door. When the rear lower door is opened, the safety baffle blocks the grounding operating shaft, otherwise the safety baffle moves down to expose the grounding operating shaft.

[0010] As a further improvement of the utility model, the locking structure includes a card plate, the middle part of the card plate is hinged to the other end of the horizontal connecting rod three, and a vertical waist groove two is opened on the card plate. The vertical waist groove two is equipped with a vertical pin two, and the vertical pin two is connected to the side panel of the environmental protection cabinet body. A lock head is processed on the rear side of the card plate, and the lock head matches the lock groove opened on the lock frame, and the lock frame is arranged on the rear lower door.

[0011] In this way, when the rear lower door is closed, the lock head is inserted into the lock slot, thereby pulling the card plate downward, and then driving the connecting rod structure to move the safety baffle downward, exposing the grounding operating shaft. When the rear lower door is opened, the lock head disengages from the lock slot, and the spring releases its elastic force, pushing the movable bracket upward, so that the safety baffle blocks the grounding operating shaft.

[0012] As a further improvement of the present invention, the door card structure includes a mounting seat, which is arranged at the rear end of another side panel of the environmental protection cabinet body, and a short-circuit board is arranged on the mounting seat. A long plug-in board is arranged at the front end of the short-circuit board, and the long plug-in board matches the slot opened on the side of the rear lower door.

[0013] In this way, the rear lower door is lifted upward, and the slot moves up along the long plug plate, driving the lock head to move up, so that the long plug plate is directly plugged into the slot as a whole, and the rear lower door is moved outward, so that the slot of the rear lower door can be disengaged from the long plug plate, so that the rear lower door can be removed from the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The structure diagram of the rear lower door opening of the utility model Figure 1 .

[0015] Figure 2 The structure diagram of the rear lower door opening of the utility model Figure 2 .

[0016] Figure 3 Schematic diagram of the structure of the rear lower door closing of the utility model Figure 1 .

[0017] Figure 4 Schematic diagram of the structure of the rear lower door closing of the utility model Figure 2 .

[0018] Figure 5 for Figure 1 A partial enlarged view of point A in the middle.

[0019] Figure 6 for Figure 2 A partial enlarged view of point B in the middle.

[0020] Figure 7 for Figure 2 A partial enlarged view of point C in the middle.

[0021] Figure 8 for Figure 3 A partial enlarged view of point D in the middle.

[0022] Fig. 9 for Figure 4 A partial enlarged view of point E in the middle.

[0023] Fig.10 for Figure 4 A partial enlarged view of point F in the middle.

[0024] Among them, 1 load switch, 2 cabinet, 3 vertical connecting rod 2, 4 horizontal connecting rod 1, 5 support frame, 6 power interface, 7 horizontal connecting rod 2, 8 horizontal waist groove 1, 9 horizontal connecting rod 3, 10 vertical waist groove 1, 11 vertical plug 1, 12 horizontal plug 2, 13 grounding operation shaft, 14 pressure plate, 15 swing rod, 16 swing pin, 17 safety baffle, 18 spring, 19 vertical connecting rod 1, 20 reset bracket, 21 vertical waist groove 2, 22 card plate, 23 vertical plug 2, 24 lock, 25 lock slot, 26 lock frame, 27 mounting seat, 28 short circuit board, 29 long plug board, 30 slot, 31 swing slot, 32 mounting rod, 33 movable bracket, 34 rear lower door. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] like Figure 1-10 A new type of mechanical interlocking device for the rear lower door of an environmentally friendly gas cabinet is shown, comprising a grounding operating shaft 13, the grounding operating shaft 13 is equipped with a safety shielding structure, the safety shielding structure is connected to the connecting rod structure, the connecting rod structure is connected to the locking structure, the locking structure cooperates with the rear lower door 34, and the other side of the rear lower door 34 is equipped with a door card structure.

[0027] The safety shielding structure includes a safety baffle 17 that cooperates with the grounding operating shaft 13. The safety baffle 17 is arranged on the outer side surface of the movable bracket 33. The movable bracket 33 is sleeved on the mounting rod 32. Both ends of the mounting rod 32 are connected to the reset bracket 20. The reset bracket 20 is arranged on the load switch 1. A spring 18 is sleeved on the mounting rod 32. The upper end of the spring 18 is connected to the lower end of the movable bracket 33. The lower end of the spring 18 is connected to the lower end of the reset bracket 20. The movable bracket 33 is connected to the connecting rod structure. The inner side surface of the movable bracket 33 is hinged to the rear end of the rocker arm 15. The middle part of the rocker arm 15 is hinged to the load switch 1. The front end of the rocker arm 15 matches the pressing piece 14 sleeved on the grounding operating shaft 13. The rear part of the rocker arm 15 is provided with a rocker slot 31, and the rocker slot 31 is equipped with a rocker pin 16.

[0028] The connecting rod structure includes a vertical connecting rod 19, the upper end of the vertical connecting rod 19 is connected to the movable bracket 33, the lower end of the vertical connecting rod 19 is hinged to one end of the horizontal connecting rod 4, the middle part of the horizontal connecting rod 4 is hinged to the upper end of the support frame 5, the other end of the horizontal connecting rod 4 is hinged to the upper end of the vertical connecting rod 23, the lower end of the vertical connecting rod 23 is hinged to one end of the horizontal connecting rod 27, and the vertical connecting rod 23 is provided with a vertical waist groove 10, and the vertical waist groove 10 is equipped with a vertical pin 11, a vertical latch 11 is connected to the side panel of the environmental protection cabinet body 2, the other end of the horizontal connecting rod 27 is hinged to one end of the horizontal connecting rod 3 9, a horizontal latch 1 is arranged in the middle of the horizontal connecting rod 27, the horizontal latch 1 is connected to the side panel of the safe cabinet body 2, the other end of the horizontal connecting rod 3 9 is hinged to the locking structure, a horizontal waist groove 18 is opened on the horizontal connecting rod 3 9, the horizontal waist groove 18 is equipped with a horizontal latch 2 12, and the horizontal latch 2 12 is connected to the side panel of the environmental protection cabinet body 2.

[0029] The locking structure includes a card plate 22, the middle of which is hinged to the other end of the horizontal connecting rod 3 9, a vertical waist groove 21 21 is provided on the card plate 22, and a vertical bolt 23 is provided on the vertical waist groove 21, and the vertical bolt 23 is connected to the side plate of the environmental protection cabinet body 2, and a lock head 24 is processed on the rear side of the card plate 22, and the lock head 24 matches the lock groove 25 provided on the lock frame 26, and the lock frame 26 is arranged on the rear lower door 34. The door card structure includes a mounting seat 27, which is arranged at the rear end of another side plate of the environmental protection cabinet body 2, and a short-circuit plate 28 is arranged on the mounting seat 27, and a long plug plate 29 is arranged at the front end of the short-circuit plate 28, and the long plug plate 29 matches the slot 30 provided on the side of the rear lower door 34.

[0030] In the present invention, the front and rear ends of the cabinet 2 are both provided with power interfaces 6, so that the cabinet 2 can be connected or switched to the power source according to the actual situation on site.

[0031] When wiring or maintenance is required, the load switch 1 is opened, and the grounding operating shaft 13 is rotated to close the grounding switch. Then, the rear lower door 34 is lifted upward so that the slot 30 of the rear lower door 34 moves up along the long plug board 29 until the long plug board 29 is completely in the slot 30. In this way, the rear lower door 34 can be moved horizontally backward so that the long plug board 29 is disengaged from the slot 30. At the same time, the lock head 24 and the ash are disengaged from the lock slot 25, so that the rear lower door 34 can be removed.

[0032] In this process, as the rear lower door 34 moves upward, the lock head 24 plugged into the lock groove 25 of the lock frame 26 on the rear lower door 34 is also driven to move upward, thereby causing the card plate 22 connected to the lock head 24 to move upward through the vertical waist groove 21 and the vertical bolt 23, thereby driving the horizontal connecting rod 3 9 to move forward horizontally through the cooperation of the horizontal waist groove 1 8 and the horizontal bolt 2 12, so that the rear end of the horizontal connecting rod 2 7 rotates upward with the horizontal bolt 1 as the center, and the front end of the horizontal connecting rod 2 7 rotates downward, thus pulling the vertical The straight link 2 3 moves downward through the cooperation of the vertical waist groove 10 and the vertical pin 11, so that the vertical link 2 3 will drive the front end of the horizontal link 1 4 to rotate downward with the upper end of the support frame 5 as the center, and at the same time, the front end of the horizontal link 1 4 rotates upward, which will cause the vertical link 19 to move upward, so that the mobile bracket 33 moves upward, and then moves upward with the safety block 17, and finally the safety block 17 blocks the grounding operation shaft 13, so that the grounding operation shaft 13 cannot be operated, and the load switch 1 is in a locked state. The rear end of the swing rod 15 will swing upward as the mobile bracket 33 moves upward, and its front end will swing downward, so as to cooperate with the movement of the mobile bracket 33, and due to the support of the spring 18, the mobile bracket 33 will not move downward, ensuring that the safety block 17 can always block the grounding operation shaft 13 to ensure safety.

[0033] When the wiring or maintenance is completed and the load switch 1 needs to be closed again, the lock slot 25 on the lock frame 26 of the rear lower door 34 is aligned with the lock head 24, and the slot 30 is aligned with the long plug plate 29, and the rear lower door 34 is pushed so that the lock head 24 is inserted into the lock slot 25, the long plug plate 29 is inserted into the slot 30, and the long plug plate 29 extends outward from the slot 30, and the rear lower door 34 is moved vertically downward, so that the upper part of the long plug plate 29 hooks the upper end of the slot 30, and the short-circuit board 28 is inserted into the slot 30, so that the rear lower door 34 cannot be freed from the restraint of the long plug plate 29 when it moves horizontally backward.

[0034] In this process, as the rear lower door 34 moves downward, the lock head 24 plugged into the lock slot 25 of the lock frame 26 on the rear lower door 34 is also driven to move downward, thereby causing the card plate 22 connected to the lock head 24 to move downward through the vertical waist groove 21 and the vertical bolt 23, thereby driving the horizontal connecting rod 3 9 to move horizontally backward through the cooperation of the horizontal waist groove 1 8 and the horizontal bolt 2 12, so that the rear end of the horizontal connecting rod 2 7 rotates downward with the horizontal bolt 1 as the center, and the front end of the horizontal connecting rod 2 7 rotates upward, thus pulling the vertical connecting rod 2 3 through the vertical waist groove 10 and The vertical bolt 11 moves upward with the cooperation, so that the vertical connecting rod 2 3 will drive the front end of the horizontal connecting rod 1 4 to rotate upward with the upper end of the support frame 5 as the center, and at the same time, the front end of the horizontal connecting rod 1 4 rotates downward, which will cause the vertical connecting rod 19 to move downward, so that the mobile bracket 33 moves downward, and then overcomes the elastic force of the spring 18 and moves the safety baffle 17 downward, and finally the safety baffle 17 lowers the grounding operation shaft 13 to be exposed again, so that the grounding operation shaft 13 can be operated, and the grounding operation shaft 13 is rotated to open the grounding switch, and then the load switch 1 is closed. The rear end of the swing rod 15 will swing downward as the mobile bracket 33 moves downward, and its front end will swing upward, so as to cooperate with the movement of the mobile bracket 33.

[0035] When the grounding operating shaft 13 rotates, the pressing plate 14 is driven to rotate, so that the end of the pressing plate 14 is against the front bottom of the swing rod 15. Since the pressing plate 14 always conflicts with the front bottom of the swing rod 15, the swing rod 15 cannot swing, so that the movable bracket 33 cannot move down, thereby locking the connecting rod structure, so that the rear lower door 34 cannot move up, thereby ensuring that the rear lower door 34 is locked by the long plug plate 29 and the slot 30 and cannot be opened.

[0036] In summary, the rear lower door 34 can be opened when the grounding switch is closed (no power), and the rear lower door 34 cannot be opened when the grounding switch is open (to prevent accidental entry into the live compartment), meeting the five-protection requirements.

[0037] The utility model sets a power interface 6 at the front end of the cabinet 2, and also sets a power interface 6 at the rear end of the cabinet 2, so that the wiring position selection of the environmental protection gas cabinet is more flexible, and the wiring can be carried out according to the actual situation. In addition, by associating and coordinating the grounding operation shaft 13, the safety shielding structure, the connecting rod structure, the locking structure and the rear lower door 34, the interlocking between the grounding operation shaft 13 and the rear lower door 34 is achieved, so that the operation of opening and closing the switch needs to be completed at the front and back of the cabinet, which is safer and more reliable.

[0038] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed herein, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A new type of environmental protection gas cabinet rear lower door mechanical interlocking device, including a grounding operating shaft, characterized in that: The grounding operation shaft is equipped with a safety shielding structure, which is connected to the connecting rod structure, which is connected to the locking structure, which cooperates with the rear lower door, and the other side of the rear lower door is equipped with a door card structure; The safety shielding structure includes a safety baffle matched with the grounding operation shaft, the safety baffle is arranged on the outer side of the movable bracket, the movable bracket is sleeved on the mounting rod, the two ends of the mounting rod are connected to the reset bracket, the reset bracket is arranged on the load switch, the mounting rod is sleeved with a spring, the upper end of the spring is connected to the lower end of the movable bracket, the lower end of the spring is connected to the lower end of the reset bracket, the movable bracket is connected to the connecting rod structure, the inner side of the movable bracket is hinged to the rear end of the swing rod, the middle part of the swing rod is hinged to the load switch, the front end of the swing rod is matched with the pressing piece sleeved on the grounding operation shaft, the rear part of the swing rod is provided with a swing groove, and the swing groove is equipped with a swing pin; The connecting rod structure includes a vertical connecting rod 1, the upper end of the vertical connecting rod 1 is connected to the movable bracket, the lower end of the vertical connecting rod 1 is hinged to one end of the horizontal connecting rod 1, the middle part of the horizontal connecting rod 1 is hinged to the upper end of the support frame, the other end of the horizontal connecting rod 1 is hinged to the upper end of the vertical connecting rod 2, the lower end of the vertical connecting rod 2 is hinged to one end of the horizontal connecting rod 2, a vertical waist groove 1 is opened on the vertical connecting rod 2, the vertical waist groove 1 is equipped with a vertical pin 1, the vertical pin 1 is connected to the side panel of the environmental protection cabinet body, the other end of the horizontal connecting rod 2 is hinged to one end of the horizontal connecting rod 3, a horizontal pin 1 is arranged in the middle part of the horizontal connecting rod 2, the horizontal pin 1 is connected to the side panel of the safe body, the other end of the horizontal connecting rod 3 is hinged to the locking structure, a horizontal waist groove 1 is opened on the horizontal connecting rod 3, the horizontal waist groove 1 is equipped with a horizontal pin 2, and the horizontal pin 2 is connected to the side panel of the environmental protection cabinet body.

2. According to claim 1, a new type of environmental protection gas cabinet rear lower door mechanical interlocking device is characterized in that: The locking structure includes a card plate, the middle part of which is hinged to the other end of the horizontal connecting rod three, and a vertical waist groove two is opened on the card plate, and the vertical waist groove two is equipped with a vertical pin two, and the vertical pin two is connected to the side panel of the environmental protection cabinet body. A lock head is processed on the rear side of the card plate, and the lock head matches the lock slot opened on the lock frame, and the lock frame is set on the rear lower door.

3. According to claim 2, a new type of environmental protection gas cabinet rear lower door mechanical interlocking device is characterized in that: The door card structure includes a mounting seat, which is arranged at the rear end of another side plate of the environmental protection cabinet body. A short-circuit board is arranged on the mounting seat, and a long plug board is arranged at the front end of the short-circuit board. The long plug board matches the slot opened on the side of the rear lower door.

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