Medium-voltage electrical switch cabinet convenient to overhaul

Abstract

The invention provides a medium-voltage electrical switch cabinet convenient to overhaul, and relates to the field of medium-voltage electrical cabinets. The medium-voltage electrical switch cabinet convenient to overhaul comprises a cabinet body and two cabinet doors, the two cabinet doors are hinged to the side wall of the cabinet body, the cabinet body can be closed after the two cabinet doors are closed, door body limiting mechanisms are installed on the faces, facing the cabinet body, of the cabinet doors, and deformation rail assemblies are arranged between the cabinet doors and the door body limiting mechanisms. According to the medium-voltage electrical switch cabinet convenient to overhaul, the circuit breaker can be overhauled on site through the arrangement of the door body limiting mechanism and the deformation track assembly, the auxiliary supporting effect can be achieved through the arrangement of the elastic pad and the rib plate, the elastic pad can protect the ground, the cabinet door can be kept stable, and the cabinet door and the clamping sleeve are arranged, so that the maintenance is convenient. The cabinet door can be changed back and forth from zero degree, 45 degrees and 90 degrees, after the cabinet door is opened by 90 degrees, the rear end of the cabinet door abuts against the cabinet body, and an electrical cabinet beside is not affected.

Description

Technical Field

[0001] The invention relates to the field of medium-voltage electrical cabinets, in particular to a medium-voltage electrical switch cabinet which is easy to maintain. Background Art

[0002] Circuit breakers for electrical cabinets are usually installed in high-voltage electrical cabinets. Circuit breakers are installed in high-voltage electrical cabinets to connect the plugs of the primary and secondary circuits in the electrical cabinet, so that the circuit in the electrical cabinet is in the closed or disconnected position. When the circuit is in the disconnected position through the circuit breaker, it is convenient to check and repair the line, and it is used to ensure the connection of the circuit after closing.

[0003] When an existing circuit breaker fails and needs to be repaired, a trolley is generally used to take the circuit breaker out of the electrical cabinet and transfer it to a maintenance point. Although this method is relatively convenient, when taking out the circuit breaker, due to the heavy circuit breaker, the trolley needs to be accurately aligned with the original track in the cabinet and firmly stabilized. Otherwise, once the circuit breaker is not fixed and falls, it will cause irreparable damage. Therefore, the trolley is frequently transferred between different cabinets and needs to be aligned back and forth, which is very inconvenient. In addition, some narrow locations are not convenient for pushing the trolley in. Therefore, a device that can repair the circuit breaker on site but does not require the assistance of external equipment is needed. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a medium-voltage electrical switch cabinet that is easy to maintain, which solves the problem of being able to take out a circuit breaker for maintenance without the assistance of external equipment.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a medium-voltage electrical switch cabinet that is easy to maintain, comprising a cabinet body and a cabinet door, wherein the cabinet door is provided with two doors, both of which are hinged to the side wall of the cabinet body, and the cabinet body can be closed after the two cabinet doors are closed, and a door body limiting mechanism is installed on the side of the cabinet door facing the cabinet body, and a deformable track assembly is provided between the cabinet door and the door body limiting mechanism, which is used to adjust and align the track of a layer corresponding to the circuit breaker in the cabinet body;

[0006] The door limiting mechanism includes a rib plate, which is correspondingly arranged on the side of the cabinet door close to the cabinet body; it includes four support arms, which are parallel to each other and are divided into two upper and lower groups, with two support arms in each group, one end of each support arm is hinged to the rib plate, and the other end is hinged to the cabinet door; it includes a connecting rod, which connects the two bottom support arms and the hinge axis of the cabinet door, and the connecting rod is fixed to the support arm; it also includes a handle, which is fixedly connected to one end of the connecting rod; it includes a positioning ring, which is coaxially arranged with the connecting rod and fixed on the cabinet door, and the positioning ring is provided with a plurality of positioning holes A; it also includes a pin shaft, which is inserted into the handle, passes through the handle and is inserted into the positioning hole A, and the handle can be rotated downward to move the rib plate downward and contact the ground.

[0007] Preferably, it also includes an elastic pad fixed to the bottom of the rib plate.

[0008] Preferably, the deformable track assembly includes a screw rod, which is arranged between the rib plate and the cabinet door, and the upper and lower ends of the screw rod are supported and rotated by the cabinet door; it includes two reinforcing arms, which are respectively located on both sides of the screw rod, and the ends of the two reinforcing arms close to each other are rotatably connected to the cabinet door; it includes worm wheels, which correspond to the number of reinforcing arms, and the worm wheels are fixedly installed on the reinforcing arms and are coaxial with the rotating axes of the reinforcing arms and the cabinet door; it includes two worms, both ends of the worms are supported and rotated by the cabinet door, the two worm wheels are located on the side where the two worm wheels are close to each other, and the worms are meshed with the corresponding worm wheels, and the screw rod drives the two worms at the same time, and two rollers are fixedly installed on the side of the reinforcing arm away from the cabinet door, and the two rollers are respectively located at the ends of the two reinforcing arms away from each other;

[0009] It includes a screw sleeve, which is sleeved on a screw rod, and the two are connected by threaded transmission; an extension rod, one end of which is fixed to the screw sleeve, and the other end extends upward; a U-shaped frame, which is fixed to the end of the extension rod away from the screw sleeve; and a guide rail, wherein two guide rails are provided, one of which is elastically hinged to the U-shaped frame, and the other guide rail is elastically hinged to the U-shaped frame and can slide relatively, and the upper ends of the two guide rails are respectively fitted with corresponding rollers by elastic reaction force, and the screw rod drives the screw sleeve to move upward to cause the two guide rails to unfold, and at this time, the reinforcing arm is rotated by the force of the screw rod and protrudes from the cabinet door, and after the screw sleeve drives the two guide rails to be horizontal, the guide rail is supported by the end of the reinforcing arm away from the cabinet door, and at this time, the guide rail and the slide rail at the circuit breaker installation position of the cabinet body are on the same straight line.

[0010] Preferably, the guide rails are arranged relative to each other, and the two guide rails are symmetrically arranged about the center line of the cabinet door. Both ends of the U-shaped frame are elastically hinged with connecting frames, one group of connecting frames is fixed to the bottom end of one guide rail, and both sides of the bottom end of the other guide rail are provided with sliding grooves, and the connecting frames are installed on the sliding grooves. The connecting frames are slidably connected to the sliding grooves and cannot be separated from the sliding grooves.

[0011] Preferably, the reinforcing arm is arranged at the upper end of one side of the cabinet door, and the two reinforcing arms are symmetrically arranged with respect to the center line of the cabinet door, and the distances between the two reinforcing arms and the screw rod are the same.

[0012] Preferably, a gear A is fixedly installed at one end of the worm, and a gear B is fixedly installed on the outside of the screw corresponding to the gear A. Gear B is located between the two gears A and meshes with the two gears A respectively. When the screw rotates, the worm is driven to rotate through the two gears A, and the two worm wheels rotate in opposite directions.

[0013] Preferably, a hexagonal head is installed at the upper end of the screw rod near the end position of the cabinet door, and an auxiliary rotating head is rotatably installed on the cabinet door corresponding to the lower end position of the screw rod, and the auxiliary rotating head can engage the screw rod to rotate.

[0014] Preferably, a clamping sleeve is fixedly installed on the hinge shaft between the cabinet door and the cabinet body, the clamping sleeve is fixed to the cabinet body, a plurality of positioning holes B are provided on the clamping sleeve, a telescopic rod is fixedly installed at the position corresponding to the clamping sleeve on the cabinet door, and the telescopic end of the telescopic rod can be inserted into different positioning holes B when the cabinet door is opened and closed.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The medium-voltage electrical switch cabinet which is easy to maintain is provided with a door body limiting mechanism and a deformable track assembly. The two bottom cabinet doors are opened, and the handle is operated to support the rib plate on the ground. At this time, the cabinet door is fixed and supported. The screw rod is operated to rotate so that the screw sleeve drives the U-shaped frame to move upward. The two guide rails are unfolded by the elastic reaction force and are always in contact with the roller of the reinforcing arm. The screw rod also rotates when rotating, so that the reinforcing arm is rotated upward at one end away from the cabinet door and extends to the top of the cabinet door. At this time, the two guide rails extend in a straight line. The inner guide rail will extend to the track of the circuit breaker, push the outer guide rail, make it slide relative to the U-shaped frame and contact with the inner guide rail. At this time, the circuit breaker can be pulled out of the cabinet body and slide along the guide rail to the outside of the cabinet body. Since the cabinet door is supported by the rib plate, the hinge does not bear the weight of the circuit breaker. The weight of the circuit breaker is distributed on the cabinet door and the rib plate, so that the circuit breaker can be maintained on site.

[0017] 2. The medium-voltage electrical switch cabinet, which is easy to maintain, is equipped with two guide rails. The rear guide rail will extend to the first layer of the cabinet where the circuit breaker is installed after being parallel, and is supported by the cabinet body and the reinforcing arm. The front guide rail is supported by the reinforcing arm and held by the U-shaped frame. The U-shaped frame is connected with the screw sleeve and the screw rod, so it has greater tensile resistance. Therefore, when the circuit breaker moves to the front, the front guide rail can still bear the weight of the circuit breaker. An extension rod is provided. When the screw sleeve moves to the top of the screw rod, the extension rod can lift the U-shaped frame above the cabinet door to facilitate alignment with the upper layer of the cabinet body.

[0018] 3. The medium-voltage electrical switch cabinet which is easy to maintain is provided with an elastic pad. When the pin shaft is pressed down and the handle is pressed down, the rib plate will move downward and drive the elastic pad to contact the ground. At this time, the handle is pressed hard to compact the elastic pad so that the rib plate can bear the weight of the cabinet body. The pin shaft is aligned with the positioning hole A below the positioning ring as much as possible. After the pin shaft is inserted, the rib plate can play an auxiliary support role, and the elastic pad can protect the ground and keep the cabinet door stable.

[0019] 4. The medium-voltage electrical switch cabinet which is easy to maintain is provided with a cabinet door and a clamping sleeve. The positioning hole B cooperates with the telescopic rod to enable the cabinet door to change back and forth from zero degree, forty-five degrees and ninety degrees. When the circuit breaker needs to be removed, the cabinet door is opened ninety degrees. At this time, the cabinet door is perpendicular to the cabinet body. Since the hinge between the cabinet door and the cabinet body is arranged in the cabinet body, after the cabinet door is opened ninety degrees, its rear end is against the cabinet body and does not affect the electrical cabinet next to it. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a front view of the structure of the present invention;

[0022] Figure 3 It is a schematic diagram of another state of the structure of the present invention;

[0023] Figure 4 It is a structural diagram of the cabinet body and cabinet door of the present invention;

[0024] Figure 5 For the present invention Figure 4 A magnified view of the local structure;

[0025] Figure 6 It is a structural schematic diagram of the cabinet door of the present invention;

[0026] Figure 7 For the present invention Figure 6 Enlarged view of the local area;

[0027] Figure 8 This is a structural front view of the cabinet door of the present invention;

[0028] Fig. 9 This is a structural diagram of the cabinet door and deformable track assembly of the present invention;

[0029] Fig.10 For the present invention Fig. 9 A magnified view of a local area.

[0030] In the figure: 1. cabinet body; 2. cabinet door; 3. door body limiting mechanism; 301. rib plate; 302. support arm; 303. connecting rod; 304. handle; 305. positioning ring; 306. positioning hole A; 307. pin; 308. elastic pad; 4. deformable track assembly; 401. screw; 402. reinforcement arm; 403. worm gear; 404. worm; 405. roller; 406. screw sleeve; 407. extension rod; 408. U-shaped frame; 409. guide rail; 410. connecting frame; 411. slide groove; 412. gear A; 413. gear B; 5. sleeve; 6. positioning hole B; 7. telescopic rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0033] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0035] like Figure 1-Figure 10 As shown, a medium-voltage electrical switch cabinet that is easy to maintain includes a cabinet body 1 and a cabinet door 2. The cabinet doors 2 are provided with two, both of which are hinged to the side walls of the cabinet body 1. The cabinet body 1 can be closed after the two cabinet doors 2 are closed. The cabinet doors 2 are both provided with door body limiting mechanisms 3 on the sides facing the cabinet body 1. A deformable track assembly 4 is provided between the cabinet door 2 and the door body limiting mechanism 3, which is used to adjust and align the track of a layer corresponding to the circuit breaker in the cabinet body 1;

[0036] The door limiting mechanism 3 includes a rib 301, which is correspondingly arranged on the side of the cabinet door 2 close to the cabinet body 1; it includes four support arms 302, which are parallel to each other and are divided into two upper and lower groups, with two supported arms in each group, one end of the support arms 302 is hinged to the rib 301, and the other end is hinged to the cabinet door 2; it includes a connecting rod 303, which connects the hinge axes of the two bottom support arms 302 and the cabinet door 2, and the connecting rod 303 is fixed to the support arms 302; it also includes a handle 304, which is fixedly connected to one end of the connecting rod 303; it includes a positioning ring 305, which is coaxially arranged with the connecting rod 303 and fixed on the cabinet door 2, and the positioning ring 305 is provided with a plurality of positioning holes A306; it also includes a pin 307, which is plugged into the handle 304, penetrates the handle 304 and is inserted into the positioning hole A306, and the handle 304 is rotated downward to move the rib 301 downward and contact the ground.

[0037] The main components installed in the cabinet 1: circuit breaker (VEP), load switch, contactor, fuse, disconnector, grounding switch, mutual inductor, lightning arrester, busbar and secondary measurement and control device, protection device, interlocking device are placed in the metal shell, and each functional component is installed in the compartment separated by the grounded metal partition. The cabinet parameters are 6kV 4000A 40kA. The circuit breaker room adopts an independent metal closed compartment, which is located above the cabinet door 2. The secondary plug is interlocked with the circuit breaker position, and the circuit breaker position is interlocked with the grounding switch. It has an independent pressure release device, an independent anti-condensation heater, a metal door padlock function, and a high-strength aluminum alloy integral track.

[0038] The rib 301 is made of bent steel plate, such as the reinforcing rib or rib plate in the prior art, and has strong compression resistance and bending resistance. The rib 301 is usually folded on the cabinet door 2. When the handle 304 is put down, the rib 301 can be put down and inserted into the positioning hole A306 at a determined position to fix the rib 301.

[0039] The rib plate 301 further includes an elastic pad 308 fixed to the bottom of the rib plate 301 .

[0040] The elastic pad 308 can protect the ground and also allow the rib 301 to have a certain degree of downward compressibility.

[0041] The deformable track assembly 4 includes a screw rod 401, which is arranged between the rib plate 301 and the cabinet door 2, and the upper and lower ends of the screw rod 401 are supported and rotated by the cabinet door 2; it includes two reinforcing arms 402, which are respectively located on both sides of the screw rod 401, and the ends of the two reinforcing arms 402 close to each other are rotatably connected to the cabinet door 2; it includes a worm gear 403, which corresponds to the number of the reinforcing arms 402, and the worm gear 403 is fixedly installed on the reinforcing arm 402 and is coaxial with the rotation axis of the reinforcing arm 402 and the cabinet door 2; it includes two worms 404, both ends of the worm gear 404 are supported and rotated by the cabinet door 2, the two worm gears 403 are located on the side where the two worm gears 403 are close to each other, and the worm gears 404 are meshed with the corresponding worm gears 403, and the screw rod 401 drives the two worm gears 404 at the same time, and two rollers 405 are fixedly installed on the side of the reinforcing arm 402 away from the cabinet door 2, and the two rollers 405 are respectively located at the ends of the two reinforcing arms 402 away from each other;

[0042] The invention comprises a screw sleeve 406, which is sleeved on the screw rod 401, and the two are connected by threaded transmission; an extension rod 407, one end of which is fixed to the screw sleeve 406 and the other end extends upward; a U-shaped frame 408, which is fixed to the end of the extension rod 407 away from the screw sleeve 406; and a guide rail 409, wherein two guide rails 409 are provided, one of which is elastically hinged to the U-shaped frame 408, and the other guide rail 409 is elastically hinged to the U-shaped frame 408 and can slide relatively. The sides of the upper ends that are away from each other are respectively fitted with the corresponding rollers 405 under the elastic reaction force, and the screw 401 drives the screw sleeve 406 to move up to cause the two guide rails 409 to unfold. At this time, the reinforcing arm 402 is rotated by the force of the screw 401 and protrudes from the cabinet door 2. After the screw sleeve 406 drives the two guide rails 409 to be horizontal, the guide rail 409 is supported by the end of the reinforcing arm 402 away from the cabinet door 2, and at this time, the guide rail 409 and the slide rail where the circuit breaker is installed on the cabinet body 1 are in the same straight line.

[0043] The reinforcing arm 402 is made of high-strength alloy steel and has a certain load-bearing capacity. The guide rail 409 is made of high-strength alloy and has an overall U-shaped structure with a certain wall thickness. Its specifications are the same as the rails used by the upper circuit breaker, and the positions are also corresponding. The front end of the guide rail 409 is closed to limit the moving distance of the circuit breaker, and the connection between the extension rod 407 and the screw sleeve 406 is also strengthened.

[0044] The guide rails 409 are arranged opposite to each other, and the two guide rails 409 are symmetrically arranged about the center line of the cabinet door 2. Both ends of the U-shaped frame 408 are elastically hinged with connecting frames 410, one group of connecting frames 410 is fixed to the bottom end of one guide rail 409, and both sides of the bottom end of the other guide rail 409 are provided with sliding grooves 411, and the connecting frames 410 are installed on the sliding grooves 411. The connecting frames 410 are slidably connected to the sliding grooves 411 and cannot be separated from the sliding grooves 411.

[0045] A torsion spring is installed at the hinge of the connecting frame 410 and the U-shaped frame 408. When the guide rail 409 makes the connecting frame 410 longitudinal, the torsion spring is in a force storage state. A square slider is installed inside the connecting frame 410 that slides with the guide rail 409. After the slide grooves 411 on the two walls of the guide rail 409 are stuck in the slider, the two can only slide relative to each other and cannot separate.

[0046] The reinforcing arm 402 is disposed at the upper end of one side of the cabinet door 2 . The two reinforcing arms 402 are symmetrically disposed about the center line of the cabinet door 2 , and the distances between the two reinforcing arms 402 and the screw rod 401 are the same.

[0047] A gear A412 is fixedly installed at one end of the worm 404, and a gear B413 is fixedly installed at the corresponding gear A412 on the outside of the screw 401. The gear B413 is located between the two gears A412 and meshes with the two gears A412 respectively. When the screw 401 rotates, the worm 404 is driven to rotate through the two gears A412, and the two worm wheels 403 rotate in the opposite direction.

[0048] When the screw rod 401 is manually rotated, the two worm wheels 403 can be driven to rotate simultaneously. The above rotation gap needs to be measured so that the guide rail 409 is aligned with the original track when it is horizontal.

[0049] A hexagonal head is installed at the upper end of the screw rod 401 near the end position of the cabinet door 2, and an auxiliary rotating head is rotatably installed on the cabinet door 2 corresponding to the lower end position of the screw rod 401, and the auxiliary rotating head can engage the screw rod 401 to rotate.

[0050] The hexagonal head at the upper end is convenient for driving rotation using a crank. If the rotation space of the upper crank is insufficient, the crank can also be used to rotate the auxiliary rotating head. The auxiliary rotating head is arranged on the cabinet door 2, and the staff only needs to use the crank to rotate it from the side.

[0051] A clamping sleeve 5 is fixedly installed on the hinge axis between the cabinet door 2 and the cabinet body 1. The clamping sleeve 5 is fixed to the cabinet body 1 and is provided with a plurality of positioning holes B6. A telescopic rod 7 is fixedly installed on the cabinet door 2 at the position corresponding to the clamping sleeve 5. When the cabinet door 2 is opened and closed, the telescopic end of the telescopic rod 7 can be inserted into different positioning holes B6.

[0052] The positioning hole B6 cooperates with the telescopic rod 7 to allow the cabinet door 2 to change back and forth from zero degree, forty-five degrees and ninety degrees. When the circuit breaker needs to be removed, the cabinet door 2 is opened ninety degrees. At this time, the cabinet door 2 is perpendicular to the cabinet body 1. Since the hinge between the cabinet door 2 and the cabinet body 1 is arranged in the cabinet body 1, after the cabinet door 2 is opened ninety degrees, its rear end is against the cabinet body 1 and does not affect the electrical cabinet next to it.

[0053] When in use, the positioning hole B6 cooperates with the telescopic rod 7 to enable the cabinet door 2 to change back and forth from zero degree, forty-five degrees and ninety degrees. When the circuit breaker needs to be removed, the cabinet door 2 is opened ninety degrees. At this time, the cabinet door 2 is perpendicular to the cabinet body 1. Since the hinge between the cabinet door 2 and the cabinet body 1 is arranged inside the cabinet body 1, after the cabinet door 2 is opened ninety degrees, its rear end abuts against the cabinet body 1. When the pin shaft 307 is pressed and the handle 304 is pressed, the rib plate 301 will move downward and drive the elastic pad 308 to contact the ground. At this time, press hard Press the handle 304 to compact the elastic pad 308 so that the rib 301 can bear the weight of the cabinet 1. Try to align the pin 307 with the positioning hole A306 below the positioning ring 305. Then insert the pin 307 to provide auxiliary support for the rib 301. At this time, the cabinet door 2 is fixed and supported. The screw rod 401 is operated to rotate so that the screw sleeve 406 drives the U-shaped frame 408 to move upward. The two guide rails 409 are unfolded by the elastic reaction force and are always in contact with the roller 405 of the reinforcing arm 402. When the rod 401 rotates, the reinforcing arm 402 will also rotate, so that the end of the reinforcing arm 402 away from the cabinet door 2 rotates upward and extends above the cabinet door 2. At this time, the two guide rails 409 extend in a straight line, and the inner guide rail 409 will extend to the track of the circuit breaker, pushing the outer guide rail 409 to slide relative to the U-shaped frame 408 and contact with the inner guide rail 409. At this time, the circuit breaker can be pulled out of the cabinet body 1 and slide along the guide rail 409 to the outside of the cabinet body 1. The hinge is supported by the rib 301, so the weight of the circuit breaker is not borne by the hinge. The weight of the circuit breaker is distributed on the cabinet door 2 and the rib 301. The front guide rail 409 is supported by the reinforcing arm 402 and is pulled by the U-shaped frame 408. The U-shaped frame 408 is connected to the screw rod 401 by the screw sleeve 406, so it has a large tensile performance. Therefore, when the circuit breaker moves to the front, the front guide rail 409 can still bear the weight of the circuit breaker. After being pulled out, it is convenient for maintenance personnel to repair the circuit breaker.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0055] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medium voltage electrical switch cabinet that is easy to maintain, comprising a cabinet body (1) and a cabinet door (2), characterized in that: The cabinet doors (2) are provided with two doors, both of which are hinged to the side wall of the cabinet body (1); the cabinet body (1) can be sealed after the two doors (2) are closed; a door body limiting mechanism (3) is installed on the side of the cabinet door (2) facing the cabinet body (1); a deformable track assembly (4) is provided between the cabinet door (2) and the door body limiting mechanism (3) for adjusting and aligning the track of a layer corresponding to the circuit breaker in the cabinet body (1); The door body limiting mechanism (3) comprises a rib plate (301) which is arranged on a side of the cabinet door (2) close to the cabinet body (1); comprises four support arms (302) which are parallel to each other and are divided into two groups, an upper group and an lower group, with two support arms (302) in each group; one end of each support arm (302) is hinged to the rib plate (301) and the other end is hinged to the cabinet door (2); comprises a connecting rod (303) which connects the hinge shafts of the two bottom support arms (302) and the cabinet door (2); the connecting rod (303) is connected to the support arms (302) and the hinge shafts of ... The arm (302) is fixed; it also includes a handle (304) fixedly connected to one end of the connecting rod (303); it includes a positioning ring (305) coaxially arranged with the connecting rod (303) and fixed on the cabinet door (2); the positioning ring (305) is provided with a plurality of positioning holes A (306); it also includes a pin (307) plugged into the handle (304), passing through the handle (304) and then inserted into the positioning hole A (306); the handle (304) is rotated downward to enable the rib plate (301) to move downward and contact the ground.

2. A medium voltage electrical switch cabinet that is easy to maintain according to claim 1, characterized in that: It also includes an elastic pad (308) fixed to the bottom of the rib plate (301).

3. The medium voltage electrical switch cabinet that is easy to maintain according to claim 1 is characterized in that: The deformable track assembly (4) comprises a screw rod (401) disposed between the rib plate (301) and the cabinet door (2), and the upper and lower ends of the screw rod (401) are supported by the cabinet door (2) for rotation; comprises two reinforcing arms (402), which are respectively disposed on both sides of the screw rod (401), and the ends of the two reinforcing arms (402) close to each other are rotatably connected to the cabinet door (2); comprises worm gears (403), which correspond in number to the number of the reinforcing arms (402), and are fixedly mounted on the reinforcing arms (402) and are connected to the reinforcing arms (402) and the cabinet door (2). The rotating shaft of the door (2) is coaxial; it comprises two worms (404), both ends of the worms (404) are supported for rotation by the cabinet door (2), the two worm wheels (403) are located on the side where the two worm wheels (403) are close to each other, and the worms (404) are meshed with the corresponding worm wheels (403), the screw (401) drives the two worms (404) at the same time, and two rollers (405) are fixedly installed on the side of the reinforcing arm (402) away from the cabinet door (2), and the two rollers (405) are respectively located at the ends of the two reinforcing arms (402) away from each other; The invention comprises a screw sleeve (406) which is sleeved on a screw rod (401) and the two are connected by a threaded transmission; an extension rod (407) which has one end fixed to the screw sleeve (406) and the other end extending upward; a U-shaped frame (408) which is fixed to the end of the extension rod (407) away from the screw sleeve (406); and a guide rail (409). The guide rail (409) is provided with two, one of which is elastically hinged to the U-shaped frame (408) and the other is elastically hinged to the U-shaped frame (408) and can slide relatively. The two guide rails (409) The sides of the upper ends of the reinforcing arms (402) that are away from each other are respectively fitted with corresponding rollers (405) by elastic reaction force, and the screw rod (401) drives the screw sleeve (406) to move upward to cause the two guide rails (409) to unfold. At this time, the reinforcing arm (402) is rotated by the force of the screw rod (401) and protrudes from the cabinet door (2). After the screw sleeve (406) drives the two guide rails (409) to be horizontal, the guide rail (409) is supported by the end of the reinforcing arm (402) away from the cabinet door (2), and at this time, the guide rail (409) and the slide rail at the cabinet body (1) where the circuit breaker is installed are on the same straight line.

4. The medium voltage electrical switch cabinet that is easy to maintain according to claim 3 is characterized in that: The guide rails (409) are arranged opposite to each other, and the two guide rails (409) are symmetrically arranged with respect to the center line of the cabinet door (2). Both ends of the U-shaped frame (408) are elastically hinged with connecting frames (410), one group of connecting frames (410) is fixed to the bottom end of one guide rail (409), and both sides of the bottom end of the other guide rail (409) are provided with sliding grooves (411), and the connecting frames (410) are installed on the sliding grooves (411), and the connecting frames (410) are slidably connected to the sliding grooves (411) and cannot be separated from the sliding grooves (411).

5. The medium voltage electrical switch cabinet that is easy to maintain according to claim 3 is characterized in that: The reinforcing arm (402) is arranged at the upper end of one side of the cabinet door (2), and the two reinforcing arms (402) are symmetrically arranged with respect to the center line of the cabinet door (2), and the distances between the two reinforcing arms (402) and the screw rod (401) are the same.

6. The medium voltage electrical switch cabinet that is easy to maintain according to claim 3 is characterized in that: A gear A (412) is fixedly mounted on one end of the worm (404); a gear B (413) is fixedly mounted on the outside of the screw (401) at the position corresponding to the gear A (412); the gear B (413) is located between the two gears A (412) and is respectively meshed with the two gears A (412); when the screw (401) rotates, the worm (404) is driven to rotate through the two gears A (412), and the two worm wheels (403) rotate in opposite directions.

7. The medium voltage electrical switch cabinet that is easy to maintain according to claim 3 is characterized in that: A hexagonal head is installed at the upper end of the screw rod (401) near the end of the cabinet door (2), and an auxiliary rotating head is rotatably installed on the cabinet door (2) corresponding to the lower end of the screw rod (401), and the auxiliary rotating head can engage with the screw rod (401) for rotation.

8. The medium voltage electrical switch cabinet that is easy to maintain according to claim 1 is characterized in that: A clamping sleeve (5) is fixedly mounted on the hinge shaft between the cabinet door (2) and the cabinet body (1); the clamping sleeve (5) is fixed to the cabinet body (1); a plurality of positioning holes B (6) are provided on the clamping sleeve (5); a telescopic rod (7) is fixedly mounted on the cabinet door (2) at a position corresponding to the clamping sleeve (5); and when the cabinet door (2) is opened or closed, the telescopic ends of the telescopic rod (7) can be inserted into different positioning holes B (6).

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