Movable high-voltage switch cabinet

By designing a retractable chassis structure and support rods, the instability of high-voltage switchgear during transportation was solved, achieving stability on uneven surfaces and robustness after installation, thus improving operational convenience and space utilization.

CN121529328APending Publication Date: 2026-02-13UONONE GRP JIANGSU ELECTRICAL CO LTD
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Patent Information

Application Number
CN202511788052.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-01
Publication Date
2026-02-13

AI Technical Summary

Technical Problem

The existing high-voltage switchgear is unstable during transportation, especially on uneven ground, and is prone to tipping over. Moreover, the support is not stable enough after installation.

Method used

A mobile high-voltage switchgear was designed. The center of gravity and height are reduced by the retractable chassis structure. The combination of support rods and support bases ensures stability during handling and installation. The adjustable load-bearing plate and connecting plate structure improves installation flexibility and space utilization.

Benefits of technology

It significantly improves the stability of high-voltage switchgear during transportation and the structural stability after installation, while also increasing space utilization and ease of operation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of high-voltage switch cabinets, in particular to a movable high-voltage switch cabinet which comprises a bottom plate, a first case with openings in the upper end and the lower end is mounted at the top of the bottom plate, a second case with openings in the upper end and the lower end is arranged above the first case, and the second case sleeves the first case. The front-view projection of the first case is located in the second case; a first baffle is installed along the outer wall of the top of the first case, and the outer wall of the first baffle is in clearance fit with the inner wall of the second case. By arranging the first machine case and the second machine case which can slide relatively, the first machine case can be stored in the second machine case in the carrying process, the overall height and the gravity center are effectively lowered, the stability during moving is remarkably improved, and rollover on a bumpy road surface is prevented; and the second case can be reliably supported after being installed, so that the structural stability of the case in an unfolded state is ensured.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-voltage switch cabinet, and particularly relates to a movable high-voltage switch cabinet. BACKGROUND

[0002] The high-voltage switch cabinet is a complete electrical equipment for distributing, controlling and protecting electric energy in the power system. It is like a traffic hub or safety guard in the power system, and is a metal closed cabinet integrating switches, protection, measurement, control and other electrical components. It plays a core role in electric energy distribution, operation control and safety protection in the high-voltage power grid, and is a key equipment for ensuring the safe, stable and reliable operation of the modern power system. It is mainly installed in substations, industrial and mining enterprises, commercial buildings and other places that need to receive and distribute high-voltage power.

[0003] When the high-voltage switch cabinet is installed, it needs to be transported to the fixed area for installation, so workers usually place the high-voltage switch cabinet on a cart, and then the cart is used to send the high-voltage switch cabinet to the area where it needs to be installed. The existing high-voltage switch cabinet is usually of a vertical structure to save the size of the occupied area, which also makes the center of gravity of the high-voltage switch cabinet high. This makes the high-voltage switch cabinet very unstable when it is moved on the cart, especially when it encounters uneven road surfaces, and is more likely to roll over. Therefore, we propose a movable high-voltage switch cabinet. SUMMARY

[0004] The present application aims to solve the above-mentioned shortcomings in the prior art and proposes a movable high-voltage switch cabinet.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a movable high-voltage switch cabinet, comprising a bottom plate, a first machine case with openings at both the top and bottom ends is installed on the top of the bottom plate, a second machine case with openings at both the top and bottom ends is arranged above the first machine case, and the second machine case is sleeved on the first machine case, that is, the front view projection of the first machine case is located in the second machine case; A first baffle is installed along the top outer wall of the first machine case, the outer wall of the first baffle is gap-fitted with the inner wall of the second machine case, a second baffle is installed along the bottom inner wall of the second machine case, the inner wall of the second baffle is gap-fitted with the outer wall of the first machine case, and the front view projection of the second baffle is located below the first baffle; At least one support rod is arranged on each side of the first machine case, the bottom of the support rod is rotatably installed in the first U-shaped frame through a rotating shaft, the first U-shaped frame is fixed on the bottom plate, a support seat is installed on the top of the support rod, the support seat corresponds to the bottom surface of the second baffle, and a fixing bolt is arranged on the support seat, the end of the fixing bolt is threadedly connected to the first machine case.

[0006] Preferably, the end of the support seat away from the support rod is arc-shaped on both sides.

[0007] Preferably, a buffer seat is arranged at the top edge of the bottom plate, and the buffer seat corresponds to the side surface of the supporting rod.

[0008] Preferably, a self-locking universal wheel is arranged at each bottom corner of the bottom plate.

[0009] Preferably, a plurality of first ventilation holes are arranged at the bottom of the first cabinet, a plurality of second ventilation holes are arranged at the top of the second cabinet, a fixing frame is arranged at the top of the second cabinet, the two ends of the fixing frame are connected with mounting plates, the mounting plates are fixed on the outer wall of the second cabinet, and a plurality of fans are arranged in the fixing frame.

[0010] Preferably, a second inlet and outlet are arranged on one side of the second cabinet, second sealing doors are hingedly connected on the two sides of the second inlet and outlet, the second sealing doors are connected through a lock catch, a control box is arranged on the second sealing door, a controller is arranged in the control box, the controller is connected with the fans through wires, a temperature sensor is arranged on the inner wall of the second cabinet, and the temperature sensor is connected with the controller through wires. A first inlet and outlet are arranged on one side of the first cabinet close to the second inlet and outlet, first sealing doors are hingedly connected on the two sides of the first inlet and outlet, and the first sealing doors are connected through a lock catch.

[0011] Preferably, a top plate is arranged on the top of the second cabinet, strip-shaped seats are arranged on the two sides of the top plate, a first strip-shaped groove is arranged in the strip-shaped seat, a second strip-shaped groove is arranged on the top of the strip-shaped seat, the second strip-shaped groove is communicated with the first strip-shaped groove, the width of the second strip-shaped groove is smaller than that of the first strip-shaped groove, a sliding block is arranged in the first strip-shaped groove, a second U-shaped frame is connected with the top of the sliding block through a connecting frame, the second U-shaped frame is arranged on the top surface of the strip-shaped seat, a connecting pipe is rotatably arranged in the second U-shaped frame through a rotating shaft, a U-shaped rod is arranged above the top plate, the end of the U-shaped rod is arranged in the connecting pipe and connected with a limiting plate through the connecting pipe, and the limiting plate corresponds to the end surface of the connecting pipe.

[0012] Preferably, an anti-skid sleeve is arranged on the middle of the U-shaped rod.

[0013] Preferably, first connecting plates are arranged on the two sides in the first cabinet, first guide shafts are slidably arranged at the bottom of the first connecting plates, the ends of the first guide shafts are fixed on the inner wall of the first cabinet, second connecting plates are arranged on the two sides in the second cabinet, cavities are arranged at the bottom of the second connecting plates, the second connecting plates are arranged on the first connecting plates, and second guide shafts are slidably arranged at the top of the second connecting plates, the ends of the second guide shafts are fixed on the inner wall of the second cabinet. A strip-shaped slot is formed on the side of the second connecting plate and the side of the first connecting plate, the two slots are in communication, a plurality of strip-shaped bearing plates are arranged on the side of the second connecting plate, a strip-shaped mounting slot is formed on the bearing plate, the electrical equipment is mounted on the bearing plate, a screw rod is arranged at both ends of the bearing plate, the screw rod is arranged in the slot, a support plate is arranged at one end of the screw rod, and a locking nut is threadedly connected to the other end of the screw rod.

[0014] Preferably, an annular second limiting plate is arranged on the end of the second connecting plate close to the first connecting plate, the inner wall of the second limiting plate is in clearance fit with the outer wall of the first connecting plate, a first limiting plate is arranged on the end of the first connecting plate arranged in the cavity, and the outer wall of the first limiting plate is in clearance fit with the inner wall of the cavity.

[0015] The design scheme provided by the application has the following beneficial effects in the application process: 1、The first case and the second case can be accommodated in the second case during the carrying process, the overall height and the gravity center are effectively reduced, the stability during movement is significantly improved, side turning on the bumpy road is prevented, the second case can be reliably supported after installation through the cooperation of the supporting rod and the supporting seat, and the structural stability of the case in the unfolded state is ensured.

[0016] 2、The height-adjustable bearing plate and the slidable connecting plate structure are arranged, the installation position can be flexibly adjusted according to the size of the electrical equipment, the space utilization rate and the installation flexibility are improved, and the later maintenance and equipment replacement are facilitated.

[0017] 3、The U-shaped rod structure that can be accommodated and rotated is arranged, manual pushing and carrying are facilitated, the U-shaped rod structure can be accommodated in the non-use state, space is saved, and operation convenience and safety are improved. DETAILED DESCRIPTION

[0018] Figure 1 The overall structure of the application is shown Figure 1 ; Figure 2 The overall structure of the application is shown Figure 2 ; Figure 3 The case cross-sectional view of the application is shown Figure 4 The bearing plate structure of the application is shown Figure 1 ; Figure 5 The bearing plate structure of the application is shown Figure 2 ; Figure 6 The limiting plate structure of the application is shown Figure 7 Figure is a schematic diagram of the top structure of the top plate of the present application.

[0019] In the figure: 1, bottom plate; 2, first cabinet; 3, first baffle; 4, second cabinet; 5, second baffle; 6, support rod; 7, first U-shaped frame; 8, support seat; 9, fixing bolt; 10, buffer seat; 11, first inlet and outlet; 12, first sealing door; 13, second inlet and outlet; 14, second sealing door; 15, control box; 16, first connecting plate; 17, first guide shaft; 18, second connecting plate; 19, second guide shaft; 20, slotted; 21, bearing plate; 22, mounting groove; 23, screw rod; 24, support plate; 25, locking nut; 26, first limiting plate; 27, second limiting plate; 28, self-locking universal wheel; 29, first ventilation hole; 30, second ventilation hole; 31, fixed frame; 32, fan; 33, mounting plate; 34, top plate; 35, strip-shaped seat; 36, first strip-shaped groove; 37, second strip-shaped groove; 38, sliding block; 39, second U-shaped frame; 40, connecting pipe; 41, U-shaped rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. EMBODIMENT

[0021] Referring to Figures 1-7 A movable high-voltage switch cabinet includes a bottom plate 1, a first cabinet 2 with openings at both top and bottom ends is installed on the top of the bottom plate 1, a second cabinet 4 with openings at both top and bottom ends is arranged above the first cabinet 2, and the second cabinet 4 is sleeved on the first cabinet 2, that is, the front view projection of the first cabinet 2 is located in the second cabinet 4, so that the second cabinet 4 slides on the first cabinet 2, so that the first cabinet 2 can be stored in the second cabinet 4 before assembly, thereby reducing the overall height of the cabinet, that is, reducing the overall gravity center of the cabinet, and reducing the unstable shaking during transportation.

[0022] As Figure 1 shown, self-locking universal wheels 28 are installed at the bottom corners of the bottom plate 1, so that the bottom plate 1 has mobility on the ground, that is, the cabinet can be moved and transported by placing it on a trolley.

[0023] In order to facilitate the workers to move the cabinet, as Figure 1 and Figure 7As shown, the top of the second cabinet 4 is provided with a top plate 34, and the top of the top plate 34 is provided with a strip-shaped seat 35 on both sides, and the strip-shaped seat 35 is provided with a first strip-shaped groove 36, and the top of the strip-shaped seat 35 is provided with a second strip-shaped groove 37, the second strip-shaped groove 37 is communicated with the first strip-shaped groove 36, and the width of the second strip-shaped groove 37 is smaller than that of the first strip-shaped groove 36, so that the overall cross section of the strip-shaped groove is inverted T-shaped, and the first strip-shaped groove 36 is provided with a sliding block 38, and in actual use, the side surface of the sliding block 38 is in clearance fit with the inner wall of the first strip-shaped groove 36, that is, the sliding block 38 is limited in the first strip-shaped groove 36, so as to avoid the sliding block 38 from sliding out of the second strip-shaped groove 37.

[0024] The top of the sliding block 38 is connected with a second U-shaped frame 39 through a connecting frame, the second U-shaped frame 39 is arranged on the top surface of the strip-shaped seat 35, and a connecting pipe 40 is rotatably arranged in the second U-shaped frame 39 through a rotating shaft, and a U-shaped rod 41 is further arranged above the top plate 34, the end of the U-shaped rod 41 is arranged in the connecting pipe 40 and passes through the connecting pipe 40 to connect a limiting plate, the limiting plate corresponds to the end surface of the connecting pipe 40, so that the end of the U-shaped rod 41 as a handle can freely slide in the connecting pipe 40, which not only ensures the length of the U-shaped rod 41, but also facilitates the comfort of workers when holding the U-shaped rod 41 to pull the cabinet, and facilitates the storage of the U-shaped rod 41 when the cabinet does not need to be carried.

[0025] In addition, an anti-skid sleeve is arranged on the middle of the U-shaped rod 41 to improve the comfort of workers holding the U-shaped rod 41.

[0026] As shown, Figure 3 the first baffle 3 is arranged along the top outer wall of the first cabinet 2, the outer wall of the first baffle 3 is in clearance fit with the inner wall of the second cabinet 4, and the second baffle 5 is arranged along the bottom inner wall of the second cabinet 4, the inner wall of the second baffle 5 is in clearance fit with the outer wall of the first cabinet 2, and the front view projection of the second baffle 5 is below the first baffle 3, after the cabinet is transported to the required position, the worker can hold the side edge of the top plate 34 to lift the second cabinet 4 upward, so that the cabinet is unfolded to form a vertical structure, and with the rising of the second cabinet 4, the second baffle 5 will contact the first baffle 3, so as to limit the rising height of the second cabinet 4, and prevent the second cabinet 4 from sliding off the first cabinet 2.

[0027] With the second cabinet 4 being lifted to the highest position, as shown, Figure 1 and Figure 3As shown, the second cabinet 4 is provided with at least one support rod 6 at each side of the first cabinet 2, the bottom of the support rod 6 is rotatably installed in the first U-shaped frame 7 through a rotating shaft, and the first U-shaped frame 7 is fixed on the bottom plate 1, a support seat 8 is installed at the top of the support rod 6, the support seat 8 corresponds to the bottom surface of the second baffle 5, and a fixing bolt 9 is arranged on the support seat 8, the end of the fixing bolt 9 is threadedly connected on the first cabinet 2, the support rod 6 can be rotated and the support seat 8 is abutted on the bottom of the second baffle 5, so as to support the second cabinet 4 which is lifted to the highest position, and in order to make the moving range of the support seat 8 along the bottom surface of the second baffle 5 more sufficient, the end of the support seat 8 away from the support rod 6 is arc-shaped on both sides, which prevents the edge of the support seat 8 from contacting the second baffle 5 and the top surface of the support seat 8 from contacting the second baffle 5, and ensures that the cabinet is fully unfolded.

[0028] It should be noted that, as Figure 1 shown, a buffer seat 10 is arranged at the top edge of the bottom plate 1, the buffer seat 10 corresponds to the side surface of the support rod 6, when the second cabinet 4 is lowered to the bottom plate 1, the support rod 6 falls on the buffer seat 10, in the actual use process, the side surface of the support seat 8 is flush with the side surface of the support rod 6, and after the support rod 6 falls on the buffer seat 10, the support rod 6 will remain in a horizontal state, so as to support the second cabinet 4 on the bottom plate 1, ensure that the second cabinet 4 is fully supported after being stored, reduce the possibility of shaking of the cabinet during movement, and improve the stability of the cabinet during transportation.

[0029] It should be noted that a second inlet and outlet 13 is arranged on one side of the second cabinet 4, second sealing doors 14 are hingedly arranged on both sides of the second inlet and outlet 13, the second sealing doors 14 are connected through a lock catch, a first inlet and outlet 11 is arranged on one side of the first cabinet 2 close to the second inlet and outlet 13, first sealing doors 12 are hingedly arranged on both sides of the first inlet and outlet 11, and the first sealing doors 12 are connected through a lock catch, so as to open the sealing doors and install electrical equipment in the cabinet.

[0030] As Figure 4 and Figure 5As shown, two first connecting plates 16 are arranged on the two sides of the first case 2, a first guide shaft 17 is slidably arranged at the bottom of the first connecting plate 16, the end of the first guide shaft 17 is fixed to the inner wall of the first case 2, two second connecting plates 18 are arranged on the two sides of the second case 4, a cavity is arranged at the bottom of the second connecting plate 18, the second connecting plate 18 is arranged on the first connecting plate 16, the second connecting plate 18 can slide on the first connecting plate 16 along with the movement of the second case 4, the arrangement of the connecting plate does not affect the storage between the cases, and a second guide shaft 19 is slidably arranged at the top of the second connecting plate 18, the end of the second guide shaft 19 is fixed to the inner wall of the second case 4, so that the connecting plate can slide in the case, that is, the connecting plate is pulled to move close to the inlet and outlet.

[0031] After the connecting plate is pulled to the inlet and outlet, a strip-shaped slot 20 is arranged on the side of the second connecting plate 18 and the side of the first connecting plate 16, the two slots 20 are correspondingly communicated, a plurality of strip-shaped bearing plates 21 are arranged on the side of the second connecting plate 18, a strip-shaped mounting groove 22 is arranged on the bearing plate 21, the electrical equipment is mounted on the bearing plate 21, the electrical equipment can be mounted on the bearing plate 21, and the connecting plate can be pushed back to the initial position after installation, which provides a wider space for the installation of the electrical equipment, a screw rod 23 is arranged at the two ends of the bearing plate 21 and arranged in the slot 20, a support plate 24 is arranged at one end of the screw rod 23, and a locking nut 25 is threadedly connected to the other end of the screw rod 23, because the screw rod 23 is arranged in the slot 20, the up-down distance of the bearing plate 21 can be adjusted according to the size of the electrical equipment mounted on the bearing plate 21, so that the bearing plate 21 can be adjusted and fixed according to the actual situation of the installation of the electrical equipment.

[0032] Further, a second limiting plate 27 is arranged at one end of the second connecting plate 18 close to the first connecting plate 16, the inner wall of the second limiting plate 27 is in clearance fit with the outer wall of the first connecting plate 16, a first limiting plate 26 is arranged at one end of the first connecting plate 16 arranged in the cavity, the outer wall of the first limiting plate 26 is in clearance fit with the inner wall of the cavity, and the sliding of the first connecting plate 16 in the cavity is limited.

[0033] After the electrical equipment is arranged on the bearing plate 21 for use, if Figure 1 and Figure 2As shown, a plurality of first ventilation holes 29 are arranged at intervals on the bottom of the two sides of the first cabinet 2, a plurality of second ventilation holes 30 are arranged at intervals on the top of the two sides of the second cabinet 4, and a fixing frame 31 is arranged on the top of the two sides of the second cabinet 4, the two ends of the fixing frame 31 are connected with mounting plates 33, the mounting plates 33 are fixed on the outer wall of the second cabinet 4, and a plurality of fans 32 are arranged in the fixing frame 31 at intervals, so that air can flow in and out of the cabinet, thereby cooling the electrical equipment in the cabinet.

[0034] It should be noted that the second sealing door 14 is further provided with a control box 15, the control box 15 is provided with a controller, the controller is connected with the fan 32 through wires, a temperature sensor is installed on the inner wall of the second cabinet 4, and the temperature sensor is connected with the controller through wires; in actual use, the controller is one of a PLC logic controller, a control mainboard and a control host, the temperature in the cabinet is monitored through the temperature sensor, the rotating speed of the fan 32 is controlled according to the temperature in the cabinet, and the energy-saving effect is achieved.

[0035] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A portable high-voltage switchgear, characterized in that: Includes a base plate (1), on which a first chassis (2) with openings at both the top and bottom is installed, and a second chassis (4) is fitted on the first chassis (2). A first baffle (3) is installed along the top outer wall of the first chassis (2), and the outer wall of the first baffle (3) is fitted with the inner wall of the second chassis (4) with a clearance. A second baffle (5) is installed along the bottom inner wall of the second chassis (4), and the inner wall of the second baffle (5) is fitted with the outer wall of the first chassis (2) with a clearance. The frontal projection of the second baffle (5) is located below the first baffle (3). At least one support rod (6) is provided on each side of the first chassis (2). The bottom of the support rod (6) is rotatably installed in the first U-shaped frame (7) via a pivot, and the first U-shaped frame (7) is fixed on the base plate (1). A support seat (8) is installed on the top of the support rod (6).

2. The portable high-voltage switchgear according to claim 1, characterized in that: The second chassis (4), which has openings at both the top and bottom, is located above the first chassis (2), and the frontal projection of the first chassis (2) is located inside the second chassis (4); The bottom surface of the support base (8) corresponds to that of the second baffle (5), and a fixing bolt (9) is provided on the support base (8). The end of the fixing bolt (9) is threadedly connected to the first housing (2). Both sides of the end of the support base (8) away from the support rod (6) are arc-shaped cut surfaces.

3. A portable high-voltage switchgear according to claim 2, characterized in that: A buffer seat (10) is provided at the top edge of the base plate (1), and the buffer seat (10) corresponds to the side of the support rod (6).

4. A portable high-voltage switchgear according to claim 2, characterized in that: Self-locking casters (28) are installed at the bottom corners of the base plate (1).

5. A portable high-voltage switchgear according to claim 2, characterized in that: Multiple first ventilation holes (29) are provided at intervals on both sides of the bottom of the first chassis (2), and multiple second ventilation holes (30) are provided at intervals on both sides of the top of the second chassis (4). A fixed frame (31) is provided on both sides of the top of the second chassis (4). A mounting plate (33) is connected to both ends of the fixed frame (31). The mounting plate (33) is fixed on the outer wall of the second chassis (4), and a number of fans (32) are provided in the fixed frame (31).

6. A portable high-voltage switchgear according to claim 5, characterized in that: A second inlet / outlet (13) is provided on one side of the second chassis (4). A second sealing door (14) is hinged on both sides of the second inlet / outlet (13). The second sealing doors (14) are connected by a latch. A control box (15) is also provided on the second sealing door (14). A controller is provided inside the control box (15). The controller is connected to the fan (32) through a wire. A temperature sensor is installed on the inner wall of the second chassis (4). The temperature sensor is connected to the controller through a wire. A first inlet / outlet (11) is provided on the side of the first chassis (2) near the second inlet / outlet (13). A first sealing door (12) is hinged on both sides of the first inlet / outlet (11), and the first sealing doors (12) are connected to each other by a latch.

7. A portable high-voltage switchgear according to claim 2, characterized in that: A top plate (34) is installed on the top of the second chassis (4). Strip seats (35) are installed on both sides of the top of the top plate (34). A first strip groove (36) is formed inside the strip seat (35), and a second strip groove (37) is formed on the top of the strip seat (35). The second strip groove (37) communicates with the first strip groove (36), and the width of the second strip groove (37) is smaller than that of the first strip groove (36). A slider is built into the first strip groove (36). 38), the top of the slider (38) is connected to the second U-shaped frame (39) through the connecting frame. The second U-shaped frame (39) is placed on the top surface of the strip seat (35). The connecting pipe (40) is installed in the second U-shaped frame (39) through the rotating shaft. A U-shaped rod (41) is also provided above the top plate (34). The end of the U-shaped rod (41) is placed in the connecting pipe (40) and passes through the connecting pipe (40) to connect to the limiting plate. The limiting plate corresponds to the end face of the connecting pipe (40).

8. A portable high-voltage switchgear according to claim 7, characterized in that: An anti-slip sleeve is provided in the middle of the U-shaped rod (41).

9. A portable high-voltage switchgear according to claim 2, characterized in that: A first connecting plate (16) is provided on both sides inside the first chassis (2). A first guide shaft (17) slides through the bottom of the first connecting plate (16). The end of the first guide shaft (17) is fixed to the inner wall of the first chassis (2). A second connecting plate (18) is provided on both sides inside the second chassis (4). A cavity is opened at the bottom of the second connecting plate (18) so that the second connecting plate (18) is fitted on the first connecting plate (16). A second guide shaft (19) slides through the top of the second connecting plate (18). The end of the second guide shaft (19) is fixed to the inner wall of the second chassis (4). A strip-shaped slot (20) is provided on the side of the second connecting plate (18) and the side of the first connecting plate (16). The two slots (20) are connected to each other. A number of spaced and strip-shaped support plates (21) are provided on the side of the second connecting plate (18). A strip-shaped mounting groove (22) is provided on the support plate (21) for the installation of electrical equipment on the support plate (21). A screw (23) is provided through both ends of the support plate (21). The screw (23) is placed in the slot (20). A support plate (24) is installed at one end of the screw (23), and a locking nut (25) is threaded to the other end of the screw (23).

10. A portable high-voltage switchgear according to claim 9, characterized in that: A ring-shaped second limiting plate (27) is installed on one end of the second connecting plate (18) near the first connecting plate (16). The inner wall of the second limiting plate (27) is in clearance fit with the outer wall of the first connecting plate (16). A first limiting plate (26) is installed on one end of the first connecting plate (16) placed in the cavity. The outer wall of the first limiting plate (26) is in clearance fit with the inner wall of the cavity.