An easy-to-maintain high and low voltage switchgear

Abstract

This utility model relates to the technical field of high and low voltage switchgear devices, specifically a high and low voltage switchgear that is easy to maintain. It includes: a high and low voltage switchgear housing, with a door on one side of the housing's opening; fixed plates are fixedly connected to the upper and lower inner walls of the housing near the opening, with a pre-defined space reserved between the fixed plates and the opening; guide rods are fixedly connected between the two fixed plates and the inner walls of the housing, and the two guide rods are slidably connected to a back plate, on which an electrical mounting plate is installed; it also includes a safety pushing mechanism for moving the back plate outwards and a line protection mechanism for stably mounting the electrical wires on the electrical mounting plate. This device can safely move the electrical components inside the high and low voltage switchgear to the outside, facilitating maintenance, and can prevent the wires on the electrical components from being pulled when moved to the outside.

Description

Technical Field

[0001] This utility model relates to the technical field of high and low voltage switchgear devices, and in particular to a high and low voltage switchgear that is easy to maintain. Background Technology

[0002] High and low voltage switchgear is a complete set of electrical equipment in a power system that connects high-voltage or low-voltage cables. It primarily undertakes functions such as power distribution, control, and circuit protection, and is widely used in substations, power distribution systems, and new energy power plants. It achieves voltage conversion through transformers and integrates high-voltage and low-voltage compartments through components such as main control switches, circuit breakers, and contactors.

[0003] When maintenance of high and low voltage switchgear is required, the traditional method is for personnel to enter the switchgear for maintenance. However, during maintenance, the technicians cannot stretch their arms and legs, and the lighting inside the switchgear is not bright enough, requiring the use of lights. This setup is not convenient.

[0004] To address this, a new type of high and low voltage switchgear has been developed that is easy to maintain. It allows for the safe relocation of electrical appliances from inside the switchgear to the outside, facilitating maintenance and preventing the wiring on the appliances from being pulled when they are moved to the outside. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a high and low voltage switch cabinet that is easy to maintain. The electrical appliances inside the high and low voltage switch cabinet can be safely moved to the outside, which facilitates maintenance. When the electrical appliances are moved to the outside, the wiring on the electrical appliances can be prevented from being pulled.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a high- and low-voltage switchgear that is easy to maintain, comprising: The high and low voltage switch cabinet housing has a door on one of its open sides. The upper and lower inner walls of the high and low voltage switch cabinet housing near the opening are fixedly connected to fixing plates. A preset space is reserved between the fixing plates and the opening of the high and low voltage switch cabinet housing. Guide rods are fixedly connected between the two fixing plates and the inner walls of the high and low voltage switch cabinet housing. The two guide rods are slidably connected to a back plate, and an electrical mounting plate is installed on the back plate. It also includes a safety pushing mechanism that moves the back panel outward and a line protection mechanism that ensures the electrical wires on the electrical mounting plate are stably installed.

[0007] Furthermore, a filter screen is provided on the door body.

[0008] Furthermore, the safety pushing mechanism includes a bidirectional threaded rod and a motor. The bidirectional threaded rod is rotatably connected between the upper and lower inner walls of the high and low voltage switch cabinet housing. Limiting sliders are threadedly connected to the bidirectional threads of the bidirectional threaded rod. The two limiting sliders are slidably connected in the first limiting groove on the high and low voltage switch cabinet housing. Two extension plates are fixedly connected to the back plate. A hinge rod is hinged between the limiting slider and the extension plate. The two limiting sliders, the hinge rod, and the extension plates are symmetrically distributed. The power output end of the motor is connected to one end of the bidirectional threaded rod.

[0009] Furthermore, two second limiting grooves are provided on the back plate, and the two guide rods are respectively limited and slidably connected in the two second limiting grooves.

[0010] Furthermore, the line protection mechanism includes slots. Slots are provided on the inner walls of the high and low voltage switch cabinet housing near the top and bottom. The slots are located on the side of the fixing plate away from the opening of the high and low voltage switch cabinet housing. The fixing plate has a first wire hole and a second wire hole. The electrical wires on the electrical mounting plate first pass through the second wire hole, then through the fixing plate, and finally move into the outside through the slots.

[0011] Furthermore, a wiring mounting sleeve is installed inside the slot to protect the wiring within the sleeve.

[0012] Furthermore, a bearing seat is fixedly connected to the high and low voltage switch cabinet housing, and the middle part of the bidirectional threaded rod is rotatably connected within the bearing seat.

[0013] Furthermore, a support base is fixedly connected to the bottom of the high and low voltage switch cabinet housing.

[0014] Compared with the prior art, the beneficial effects of this utility model include: This device allows the back panel and its electrical components to be positioned near the outside, making it easier for maintenance technicians to stretch out their bodies for maintenance. At the same time, the electrical components on the back panel can also receive external light, which facilitates maintenance. The mounting plate prevents overload of the back panel and its electrical components, thereby protecting maintenance personnel. The circuit protection mechanism ensures that the electrical circuit will not be pulled when the appliance is pushed out for maintenance or when it is retracted, thus protecting the safety of the electrical circuit. Specifically, when the appliance is pushed out for maintenance, the wire between the back plate and the fixed plate is dragged downwards, and when the appliance is retracted, the wire between the back plate and the fixed plate is nearly straightened. Attached Figure Description

[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 This is a cross-sectional structural diagram of the device of this utility model; Figure 2 This utility model Figure 1 A magnified structural diagram at point A; Figure 3 This utility model Figure 1 A magnified structural diagram at point B; Figure 4 This utility model Figure 1 A magnified structural diagram at point C.

[0016] The following are the labels in the diagram: 1. High and low voltage switch cabinet housing; 2. Bidirectional threaded rod; 3. First limit slide groove; 4. Motor; 5. Limit slider; 6. Hinge rod; 7. Extension plate; 8. Bearing seat; 9. Guide rod; 10. Support seat; 11. Back plate; 12. Electrical mounting plate; 13. Door; 14. Filter screen; 15. Second limit slide groove; 16. Slot; 17. Wiring mounting sleeve; 18. Fixing plate; 19. First wire hole; 20. Second wire hole. Detailed Implementation

[0017] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0018] Example 1:

[0019] Key reference Figure 1-4 The device mainly includes a high and low voltage switch cabinet housing 1, a door 13, a back panel 11, and a motor 4.

[0020] The high and low voltage switch cabinet housing 1 is a box with an opening on the right side. The door 13 is hinged to the side of the high and low voltage switch cabinet housing 1 near the opening, and is used to block the opening on the right side of the high and low voltage switch cabinet housing 1.

[0021] Two support bases 10 are fixedly connected to the bottom of the high and low voltage switch cabinet housing 1, so that the high and low voltage switch cabinet housing 1 is at a certain distance from the ground.

[0022] A filter screen 14 is provided in the middle of the door body 13, and filter cotton can be placed at the filter screen 14 to prevent foreign objects from entering the high and low voltage switch cabinet housing 1.

[0023] The upper and lower inner walls of the high and low voltage switch cabinet housing 1 near the right opening are fixedly connected with fixing plates 18. The fixing plates 18 are at a certain distance from the opening of the high and low voltage switch cabinet housing 1, so that the subsequent wires will not be pressed by the door 13.

[0024] Guide rods 9 are fixedly connected between the two fixed plates 18 and the left inner wall of the high and low voltage switch cabinet housing 1. The two guide rods 9 are arranged horizontally and parallel. Two second limit slide grooves 15 are opened on the back plate 11. The two guide rods 9 are respectively limited and slidably connected in the two second limit slide grooves 15. Multiple electrical mounting plates 12 are fixedly installed on the back plate 11 near the outer side for installing various electrical appliances.

[0025] A bidirectional threaded rod 2 is rotatably connected between the upper and lower inner walls of the high and low voltage switch cabinet housing 1. Limiting sliders 5 are threaded to both ends of the bidirectional threaded rod 2. Both limiting sliders 5 are slidably connected within the first limiting groove 3 on the high and low voltage switch cabinet housing 1. Two extension plates 7 are fixedly connected to the left side of the back plate 11. A hinge rod 6 is hinged between the limiting sliders 5 and the extension plates 7. The two limiting sliders 5, the hinge rod 6, and the extension plates 7 are symmetrically distributed. A motor 4 and a controller for driving the motor 4 are fixedly installed on the top of the high and low voltage switch cabinet housing 1. The power output end of the motor 4 is connected to one end of the bidirectional threaded rod 2.

[0026] A bearing seat 8 is fixedly connected to the housing 1 of the high and low voltage switch cabinet, and the middle part of the bidirectional threaded rod 2 is rotatably connected in the bearing seat 8.

[0027] Example 2: Based on Embodiment 1, a technical means has been added to facilitate the stable up-and-down movement of the double-sloping wedge-shaped plate back plate 11.

[0028] This embodiment mainly includes a slot 16, a first wire hole 19, and a second wire hole 20.

[0029] The high and low voltage switch cabinet housing 1 has slots 16 on its inner wall near the top and bottom. The slots 16 are located on the side of the fixing plate 18 away from the opening of the high and low voltage switch cabinet housing 1, and are close to the fixing plate 18. The fixing plate 18 has a first wire hole 19 and a second wire hole 20. The electrical wires on the electrical mounting plate 12 first pass through the second wire hole 20, then through the fixing plate 18, and finally move into the outside through the slots 16.

[0030] A wiring mounting sleeve 17 is installed in the slot 16 so that the electrical wires pass through the wiring mounting sleeve 17, thereby protecting the electrical wires.

[0031] The other structures in this embodiment are the same as in Embodiment 1.

[0032] In practice, when maintenance of the high and low voltage switchgear is required, the door 13 is first opened, and the motor 4 is started to rotate the bidirectional threaded rod 2. The opposing threads cause the two limit sliders 5 to move closer together. With the cooperation of the hinge rod 6, the back plate 11 moves outward. At this time, under the limit of the fixed plate 18, the back plate 11 will not move and overload, thus preventing the back plate 11 and the electrical appliances on it from hitting the maintenance personnel. Then, the back plate 11 and the electrical appliances on it stop when they reach the preset position. At this time, the wires of the electrical appliances on the back plate 11 only move between the fixed plate 18 and the back plate 11, without pulling the wires, thus preventing the risk of the wires being pulled and easily damaged. The electrical appliances placed near the outside of the high and low voltage switchgear housing 1 are easy for the maintenance personnel to stretch out to maintain, and the parts near the outside of the high and low voltage switchgear housing 1 are more clearly illuminated by the outside light, making maintenance easier.

[0033] After the electrical appliances are maintained, the reverse start motor 4 is used to place the back plate 11 and the electrical appliances on it inside the high and low voltage switch cabinet housing 1. At this time, the electrical wires only move between the back plate 11 and the fixing plate 18, thereby preventing the electrical wires from being pulled.

[0034] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A high- and low-voltage switchgear that is easy to maintain, characterized in that, include: High and low voltage switch cabinet housing (1), with a door (13) provided on the open side of the high and low voltage switch cabinet housing (1). The upper and lower inner walls of the high and low voltage switch cabinet housing (1) near the opening are fixedly connected to fixing plates (18). The fixing plates (18) and the opening of the high and low voltage switch cabinet housing (1) are reserved with a preset space. The two fixing plates (18) and the inner walls of the high and low voltage switch cabinet housing (1) are fixedly connected to guide rods (9). The two guide rods (9) are slidably connected to a back plate (11). An electrical mounting plate (12) is installed on the back plate (11). It also includes a safety push mechanism that moves the backplate (11) outward and a line protection mechanism that allows electrical wires on the electrical mounting plate (12) to be stably installed.

2. The high- and low-voltage switchgear that is easy to maintain according to claim 1, characterized in that, A filter screen (14) is provided on the door body (13).

3. A high- and low-voltage switchgear that is easy to maintain according to claim 2, characterized in that, The safety pushing mechanism includes a bidirectional threaded rod (2) and a motor (4). The upper and lower inner walls of the high and low voltage switch cabinet housing (1) are connected by a bidirectional threaded rod (2). The bidirectional threads of the bidirectional threaded rod (2) are threaded with limit sliders (5). The two limit sliders (5) are slidably connected in the first limit groove (3) on the high and low voltage switch cabinet housing (1). Two extension plates (7) are fixedly connected on the back plate (11). The limit sliders (5) and the extension plates (7) are hinged with a hinge rod (6). The two limit sliders (5), the hinge rod (6), and the extension plates (7) are symmetrically distributed. The power output end of the motor (4) is connected to one end of the bidirectional threaded rod (2).

4. A high- and low-voltage switchgear that is easy to maintain according to claim 3, characterized in that, Two second limiting grooves (15) are provided on the back plate (11), and the two guide rods (9) are respectively limited and slidably connected in the two second limiting grooves (15).

5. A high- and low-voltage switchgear that is easy to maintain according to claim 4, characterized in that, The line protection mechanism includes slots (16). The inner walls of the high and low voltage switch cabinet housing (1) near the top and bottom are provided with slots (16). The slots (16) are located on the side of the fixing plate (18) away from the opening of the high and low voltage switch cabinet housing (1). The fixing plate (18) is provided with a first wire hole (19) and a second wire hole (20). The electrical wires on the electrical mounting plate (12) first pass through the second wire hole (20), then through the fixing plate (18), and finally move into the outside through the slots (16).

6. A high- and low-voltage switchgear that is easy to maintain according to claim 5, characterized in that, A line mounting sleeve (17) is installed inside the slot (16) to protect the line within the line mounting sleeve (17).

7. A high- and low-voltage switchgear that is easy to maintain according to claim 3, characterized in that, A bearing seat (8) is fixedly connected to the high and low voltage switch cabinet housing (1), and the middle part of the bidirectional threaded rod (2) is rotatably connected to the bearing seat (8).

8. A high- and low-voltage switchgear that is easy to maintain according to claim 1, characterized in that, The bottom of the high and low voltage switch cabinet housing (1) is fixedly connected to a support base (10).

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