An ultra-compact medium voltage switchgear

Abstract

The present invention relates to the field of electrical equipment, and in particular to an ultra-compact medium-voltage switchgear, comprising a switchgear body and a closing assembly; the switchgear body comprises a low-voltage chamber, a busbar chamber and a cable chamber, and a cabinet door is installed on the opening side of the switchgear body; the closing assembly comprises two guide seats, two winding members, three winding rods, two clamping members, two clamping rods and a connecting member; the two guide seats are horizontally arranged on the inner wall of the switchgear body, and a winding member and a clamping member are movably installed on each guide seat, three winding rods are installed between the two winding members, and the three winding rods are arranged in a ring array around the central axis of the winding member, two clamping rods are installed between the two clamping members, one end of the connecting member is fixed on a winding rod, and the connecting member is normally wound on the three winding rods, and the other end of the connecting member passes through between the two clamping rods and is fixed on the hinged side of the cabinet door; when the cabinet door is opened, the part of the connecting member wound on the winding rod is unfolded.

Description

Technical Field

[0001] The invention relates to the field of electrical equipment, and in particular to an ultra-compact medium-voltage switch cabinet. Background Art

[0002] Large-scale mechanical equipment is required in many construction scenarios, and when using these large-scale mechanical equipment, corresponding power equipment is required to power the mechanical equipment, such as medium-voltage switchgear.

[0003] When the existing switch cabinet is in use, the opening and closing of the cabinet door depends entirely on the operation of the staff. When the staff finishes the maintenance inside the switch cabinet, they forget to close the cabinet door and leave directly, which easily causes the dust generated in the external construction environment to enter the switch cabinet, thereby affecting the electronic components inside the switch cabinet. Another situation is that when the staff closes the cabinet door after finishing the work, the cabinet door is not closed in place due to the staff's strength problem, and the staff does not confirm it at this time, then the above problem will also occur. Summary of the invention

[0004] Based on this, it is necessary to provide an ultra-compact medium-voltage switchgear to address the above-mentioned technical problems, which can effectively prevent the entry of external dust due to the cabinet door not being closed, thereby affecting the normal use of electronic components inside the switchgear.

[0005] The present invention provides an ultra-compact medium-voltage switchgear, comprising:

[0006] The switch cabinet body includes a low-voltage room, a busbar room and a cable room, and a cabinet door is installed on the opening side of the switch cabinet body;

[0007] A closing assembly, comprising two guide seats, two winding members, three winding rods, two clamping members, two clamping rods and a connecting member; the two guide seats are horizontally arranged on the inner wall of the switch cabinet body, one winding member and one clamping member are movably mounted on each guide seat, the three winding rods are mounted between the two winding members, the three winding rods are arranged in a ring array around the central axis of the winding member, the two clamping rods are mounted between the two clamping members, one end of the connecting member is fixed on one of the winding rods, the connecting member is normally wound on the three winding rods, and the other end of the connecting member passes through between the two clamping rods and is fixed on the hinged side of the cabinet door;

[0008] When the cabinet door is opened, the part of the connecting member wound on the winding rod is unfolded, and the winding member is pulled toward the clamping member, and the clamping member is rotated at this time to complete the fixation of the connecting member; when the cabinet door needs to be closed, the guide seat drives the clamping member, and then the connecting member is wound on the winding rod under the influence of the winding member, and the cabinet door is closed.

[0009] In one embodiment, the guide seat includes a guide rail, a screw and a first elastic member; a guide groove is provided inside the guide rail, the screw is rotatably installed in the guide groove, both ends of the screw respectively pass through the two ends of the guide rail, one end of the screw is transmission-connected to the driving member, the winding member is movably sleeved on the screw, the winding member is elastically connected to one end of the guide groove through the first elastic member, the clamping member is movably clamped in the guide groove, and the clamping member is threadedly connected to the screw.

[0010] In one embodiment, the winding member includes a first fixed block, a first clamping block and a first rotating block; the first clamping block is connected to the bottom end of the first fixed block, the first clamping block is movably clamped in the guide groove and is connected to the first elastic member, a first mounting hole is provided on the first fixed block, the first rotating block is rotatably installed in the first mounting hole, and three second mounting holes are provided on the first rotating block, and the second mounting holes are used to install the winding rod.

[0011] In one embodiment, the first fixed block is hollow inside, and a second elastic member is disposed inside the first fixed block. The second elastic member is disposed in an open ring structure, one end of the second elastic member is fixed to the first fixed block, and the other end of the second elastic member surrounds the first mounting hole and passes through the first mounting hole to be connected to the first rotating block.

[0012] In one embodiment, the clamping member includes a second fixed block, a second clamping block and a second rotating block; the second clamping block is connected to the bottom end of the second fixed block, the second clamping block is movably clamped in the guide groove and is threadedly connected to the screw rod, a fourth mounting hole is provided on the second fixed block, the second rotating block is rotatably installed in the fourth mounting hole, and two fifth mounting holes are provided on the second rotating block, and the fifth mounting holes are used to install the clamping rod.

[0013] In one embodiment, a third mounting hole is formed on the first clamping block, and the first clamping block is movably connected to the screw rod through the third mounting hole. A sixth mounting hole is formed on the second clamping block, and the second clamping block is threadedly connected to the screw rod through the sixth mounting hole.

[0014] In one embodiment, the connecting member includes a sleeve portion, a bent portion and a fixed portion. The sleeve portion is arranged in a cylindrical structure and is sleeved on one of the winding rods. One end of the fixed portion is fixed to the hinge side of the cabinet door, one end of the bent portion is connected to the sleeve portion, and the other end of the bent portion passes through between the two clamping rods and is connected to the other end of the fixed portion.

[0015] In one embodiment, the interior of the second fixed block is hollow, and two arc-shaped plates are symmetrically arranged inside the second fixed block. A plurality of third clamping blocks are installed on a side of the arc-shaped plate facing the fifth mounting hole, and a plurality of clamping grooves cooperating with the third clamping blocks are opened on the surface of the second rotating block, and the arc-shaped plate is elastically connected to the inner wall of the second fixed block through a third elastic member.

[0016] In one of the embodiments, the arc plate can be bent under force, and a plurality of positioning rods are connected to a side of the arc plate facing away from the fifth mounting hole, and one end of the positioning rod facing away from the arc plate is inserted into a positioning tube, and the positioning tube is fixed on the inner wall of the second fixed block, and the third elastic member is sleeved on the positioning rod, and the two ends of the third elastic member are respectively connected to the arc plate and the positioning tube.

[0017] In one embodiment, the third clamping block is arranged in a right-angled triangle structure, and the right-angle end of the third clamping block is directly opposite to the central axis of the second rotating block.

[0018] In the above-mentioned ultra-compact medium-voltage switchgear, when the cabinet door is in a closed state, part of the connecting piece is wound on the three winding rods, and the winding piece and the clamping piece are respectively located at two ends of the guide seat. When the cabinet door is opened, the part of the connecting piece wound on the three winding rods is gradually pulled out due to the rotation of the cabinet door. When the cabinet door is opened to a suitable position, there is a gap between the winding piece and the clamping piece. At this time, the clamping piece is rotated so that the connecting piece is twisted by the clamping piece to drive the winding piece to fit the clamping piece. In the absence of external force, the connecting piece maintains balance. When the staff forgets to close the cabinet door after work, the guide seat drives the clamping piece to move, thereby eliminating the balance between the winding piece, the clamping piece and the connecting piece. Under the influence of the guide seat, the winding piece will move in the direction away from the clamping piece, and the winding piece will wind up the connecting piece, thereby pulling the cabinet door to complete the closing, effectively preventing external dust from entering due to the cabinet door not being closed, affecting the normal use of electronic components inside the switch cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the overall cross-sectional structure of the switch cabinet provided by the present invention;

[0021] Figure 2 A schematic diagram of the structure of the closing assembly provided by the present invention;

[0022] Figure 3 This is one of the schematic diagrams of the partial split structure of the closing assembly provided by the present invention;

[0023] Figure 4 The second schematic diagram of the partial split structure of the closing component provided by the present invention;

[0024] Figure 5 A schematic diagram of the internal structure of the first fixing block provided by the present invention;

[0025] Figure 6 A schematic diagram of the internal structure of the second fixing block provided by the present invention;

[0026] Figure 7 A schematic diagram of the structure of the switch cabinet provided by the present invention in the closed door state;

[0027] Figure 8 This is a schematic diagram of the structure of the switch cabinet in the open door state provided by the present invention.

[0028] Reference numerals:

[0029] 110, low voltage room; 120, busbar room; 130, cable room; 140, cabinet door; 200, closing assembly; 210, guide seat; 211, guide rail; 212, guide groove; 213, screw; 214, first elastic member; 220, winding member; 221, first fixed block; 222, first clamping block; 223, first mounting hole; 224, first rotating block; 225, second mounting hole; 226, third mounting hole; 227, second elastic member; 230, Winding rod; 240, clamping member; 241, second fixed block; 242, second clamping block; 243, fourth mounting hole; 244, second rotating block; 245, fifth mounting hole; 246, sixth mounting hole; 247, clamping groove; 250, clamping rod; 260, connecting member; 261, sleeve portion; 262, bending portion; 263, fixing portion; 271, arc plate; 272, third clamping block; 273, positioning rod; 274, positioning tube; 275, third elastic member. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Combine the following Figures 1 to 8 An ultra-compact medium voltage switchgear according to the present invention is described.

[0032] like Figure 1 and Figure 2 As shown, in one embodiment, an ultra-compact medium-voltage switchgear includes a switchgear body and a closing assembly 200; the switchgear body includes a low-voltage chamber 110, a busbar chamber 120 and a cable chamber 130, and a cabinet door 140 is installed on the opening side of the switchgear body; the closing assembly 200 includes two guide seats 210, two winding members 220, three winding rods 230, two clamping members 240, two clamping rods 250 and a connecting member 260; the two guide seats 210 are horizontally arranged on the inner wall of the switchgear body, and a winding member 220 and a clamping member 240 are movably installed on each guide seat 210, and three winding rods 230 are installed between the two winding members 220, and the three winding rods 230 are arranged in a ring array around the central axis of the winding member 220. Two clamping rods 250 are installed between the two clamping members 240, one end of the connecting member 260 is fixed on a winding rod 230, and the connecting member 260 is normally wound on the three winding rods 230, and the other end of the connecting member 260 passes through the two clamping rods 250 and is fixed on the hinged side of the cabinet door 140; when the cabinet door 140 is opened, the part of the connecting member 260 wound on the winding rod 230 is unfolded, and the winding member 220 is pulled toward the clamping member 240, and the clamping member 240 is rotated at this time to complete the fixation of the connecting member 260; when the cabinet door 140 needs to be closed, the guide seat 210 drives the clamping member 240, and then the connecting member 260 is wound on the winding rod 230 under the influence of the winding member 220, and the cabinet door 140 is closed.

[0033] Specifically, when the cabinet door 140 is in a closed state, the connecting member 260 is partially wound on the three winding rods 230, and the winding member 220 and the clamping member 240 are respectively located at the two ends of the guide seat 210. When the cabinet door 140 is opened, the part of the connecting member 260 wound on the three winding rods 230 is gradually pulled out due to the rotation of the cabinet door 140. When the cabinet door 140 is opened to a suitable position, there is a gap between the winding member 220 and the clamping member 240. At this time, the clamping member 240 is rotated so that the connecting member 260 is twisted by the clamping member 240. The dynamic winding member 220 fits against the clamping member 240. In the absence of external force, the connecting member 260 maintains balance. When the staff forgets to close the cabinet door 140 after work, the guide seat 210 drives the clamping member 240 to move, thereby eliminating the balance between the winding member 220, the clamping member 240 and the connecting member 260. Under the influence of the guide seat 210, the winding member 220 will move away from the clamping member 240, and the winding member 220 will wind the connecting member 260, thereby pulling the cabinet door 140 to complete the closing. The process state diagram is shown in FIG. Figure 7 and Figure 8As shown. For the driving of the guide seat 210, various existing sensors can be selected for proper matching, such as infrared sensors or distance sensors.

[0034] In the ultra-compact medium-voltage switch cabinet, when the cabinet door 140 is in a closed state, the connecting member 260 is partially wound on the three winding rods 230, and the winding member 220 and the clamping member 240 are respectively located at the two ends of the guide seat 210. When the cabinet door 140 is opened, the part of the connecting member 260 wound on the three winding rods 230 is gradually pulled out by the rotation of the cabinet door 140. When the cabinet door 140 is opened to a suitable position, there is a gap between the winding member 220 and the clamping member 240. At this time, the clamping member 240 is rotated so that the connecting member 260 is twisted by the clamping member 240 to drive the winding member 220 to fit the clamping member 240. Part 240, in the absence of external force, the connecting part 260 maintains balance. When the staff forgets to close the cabinet door 140 after work, the guide seat 210 drives the clamping part 240 to move, thereby eliminating the balance among the winding part 220, the clamping part 240 and the connecting part 260. Under the influence of the guide seat 210, the winding part 220 will move away from the clamping part 240, and the winding part 220 will wind the connecting part 260, thereby pulling the cabinet door 140 to complete the closing, effectively preventing the external dust from entering due to the cabinet door 140 not being closed, affecting the normal use of the electronic components inside the switch cabinet.

[0035] For the switch cabinet body, the smallest air-insulated medium-voltage switchgear, the switch cabinet width is only 500mm (the conventional product cabinet width is 650mm), which can be installed against the wall, and only 1m of operating channel is required in front of the cabinet. Reduce the construction area of ​​the distribution room by 60%.

[0036] The switch cabinet is equipped with high-performance HVX sealed circuit breakers and three-position switches. The three-position switch is located in the busbar room 120, and its status can be directly seen through the observation window in front of the cabinet. At the same time, a reliable mechanical interlock is set between the three-position switch and the circuit breaker to meet the "five protection" requirements and avoid the risks caused by misoperation. It has a rich primary wiring scheme to meet the needs of different users. The switch cabinet based on the above settings is safe, reliable and maintenance-free. The main circuit is fixedly connected and does not require maintenance during its life cycle.

[0037] The above switch cabinet can adopt intelligent online status monitoring and active operation and maintenance intelligent units, so as to monitor temperature, arc, partial discharge and mechanical characteristics online and display risk warnings with real-time data; at the same time, it can use the Clairvoyance cloud platform technology to realize remote electric operation, which is suitable for users in industries such as smart grids (switch stations, distribution rooms, etc.), data centers, buildings, hospitals, airports, petroleum and petrochemicals, light industrial electronics, and military sites.

[0038] like Figure 3As shown, in one embodiment, the guide seat 210 includes a guide rail 211, a screw 213 and a first elastic member 214; a guide groove 212 is provided inside the guide rail 211, and the screw 213 is rotatably installed in the guide groove 212, and the two ends of the screw 213 respectively pass through the two ends of the guide rail 211, one end of the screw 213 is transmission-connected to the driving member, the winding member 220 is movably sleeved on the screw 213, and the winding member 220 is elastically connected to one end of the guide groove 212 through the first elastic member 214, and the clamping member 240 is movably clamped in the guide groove 212, and the clamping member 240 is threadedly connected to the screw 213.

[0039] Specifically, the guide rail 211 is located on the side where the cabinet door 140 is hinged to the switch cabinet body, and the screw 213 passes through the winding member 220 and the clamping member 240 in sequence, but the screw 213 is only connected to the clamping member 240 for transmission, and is used to eliminate the balance between the winding member 220, the clamping member 240 and the connecting member 260 at an appropriate time. The first elastic member 214 adopts a conventional spring form, and the two ends of the first elastic member 214 are respectively connected to one end of the guide groove 212 and the winding member 220, and are used to limit the winding member 220 to a certain position under normal conditions.

[0040] In one embodiment, the winding member 220 includes a first fixed block 221, a first clamping block 222 and a first rotating block 224; the first clamping block 222 is connected to the bottom end of the first fixed block 221, the first clamping block 222 is movably clamped in the guide groove 212, and is connected to the first elastic member 214, a first mounting hole 223 is provided on the first fixed block 221, the first rotating block 224 is rotatably installed in the first mounting hole 223, and three second mounting holes 225 are provided on the first rotating block 224, and the second mounting holes 225 are used to install the winding rod 230.

[0041] Specifically, based on the spatial structural layout, the first fixed block 221 is set to a semicircular block structure, and one end of the plane of the first fixed block 221 is connected to the first clamping block 222. The first elastic member 214 is a tension spring, which is used to pull the first clamping block 222 toward the end of the guide groove 212. The three second mounting holes 225 on the first rotating block 224 form an equilateral triangle structure, which is used to save effort when winding the connecting member 260.

[0042] like Figure 5 As shown, in one embodiment, the first fixed block 221 is hollow inside, and a second elastic member 227 is arranged inside the first fixed block 221. The second elastic member 227 is arranged in an open ring structure, and one end of the second elastic member 227 is fixed on the first fixed block 221, and the other end of the second elastic member 227 is around the first mounting hole 223 and passes through the first mounting hole 223 to be connected with the first rotating block 224.

[0043] Specifically, the first fixed block 221 has a certain width, and a connection port is opened on the first fixed block 221 at the position of the first mounting hole 223. The width of the connection port is smaller than the width of the first fixed block 221, so that one end of the second elastic member 227 can be fixed inside the first fixed block 221 and is located on one side of the first rotating block 224. The other end of the second elastic member 227 is bent and fits on the surface of the first rotating block 224, and is finally connected to the other side of the first rotating block. Under normal circumstances, the two end positions of the second elastic member 227 are symmetrically arranged with respect to the middle bisecting plane of the first fixed block 221.

[0044] In one embodiment, the clamping member 240 includes a second fixed block 241, a second clamping block 242 and a second rotating block 244; the second clamping block 242 is connected to the bottom end of the second fixed block 241, the second clamping block 242 is movably clamped in the guide groove 212, and is threadedly connected to the screw 213, a fourth mounting hole 243 is provided on the second fixed block 241, the second rotating block 244 is rotatably installed in the fourth mounting hole 243, and two fifth mounting holes 245 are provided on the second rotating block 244, and the fifth mounting hole 245 is used to install the clamping rod 250.

[0045] Specifically, based on the spatial structure layout, the second fixing block 241 is configured as a semicircular block structure, and one end of the plane of the second fixing block 241 is connected to the second clamping block 242 .

[0046] In one embodiment, a third mounting hole 226 is formed on the first clamping block 222 , and the first clamping block 222 is movably sleeved on the screw rod 213 through the third mounting hole 226 . A sixth mounting hole 246 is formed on the second clamping block 242 , and the second clamping block 242 is threadedly connected to the screw rod 213 through the sixth mounting hole 246 .

[0047] like Figure 4 As shown, in one embodiment, the connecting member 260 includes a sleeve portion 261, a bent portion 262 and a fixed portion 263. The sleeve portion 261 is arranged in a cylindrical structure, and the sleeve portion 261 is sleeved on a winding rod 230. One end of the fixed portion 263 is fixed to the hinge side of the cabinet door 140, one end of the bent portion 262 is connected to the sleeve portion 261, and the other end of the bent portion 262 passes through two clamping rods 250 and is connected to the other end of the fixed portion 263.

[0048] Specifically, the end of the fixing portion 263 facing away from the hinged side of the cabinet door 140 is arranged in a planar structure and is fixed to the cabinet door 140 by a fastener, and the end of the fixing portion 263 facing the hinged side of the cabinet door 140 is arranged in a curved structure and is connected to the connecting portion. The sleeve portion 261, the curved portion 262 and the fixing portion 263 are arranged in an integral molding.

[0049] like Figure 6As shown, in one embodiment, the interior of the second fixed block 241 is hollow, and two arc plates 271 are symmetrically arranged inside the second fixed block 241. A plurality of third clamping blocks 272 are installed on the side of the arc plate 271 facing the fifth mounting hole 245. A plurality of clamping grooves 247 cooperating with the third clamping blocks 272 are provided on the surface of the second rotating block 244. The arc plate 271 is elastically connected to the inner wall of the second fixed block 241 through a third elastic member 275.

[0050] Specifically, under normal conditions, affected by the third elastic member 275 , the surface of the arc plate 271 fits against the inner surface of the second fixing block 241 , and the third clamping block 272 installed on the arc plate 271 passes through the second fixing block 241 and abuts against the clamping slot 247 to limit the clamping slot 247 .

[0051] In one embodiment, the arc plate 271 can be bent under force, and a plurality of positioning rods 273 are connected to a side of the arc plate 271 facing away from the fifth mounting hole 245. The end of the positioning rod 273 facing away from the arc plate 271 is inserted into the positioning tube 274, and the positioning tube 274 is fixed on the inner wall of the second fixed block 241. The third elastic member 275 is sleeved on the positioning rod 273, and the two ends of the third elastic member 275 are respectively connected to the arc plate 271 and the positioning tube 274.

[0052] Specifically, the arc plate 271 can be bent under force so that when the arc plate 271 is attached to the inner surface of the second fixing block 241 , the third clamping block 272 at each position on the arc plate 271 can effectively limit the clamping slot 247 .

[0053] In one embodiment, the third clamping block 272 is arranged in a right-angled triangle structure, and the right-angle end of the third clamping block 272 is directly opposite to the central axis of the second rotating block 244 .

[0054] Specifically, in order to better balance the sight winding member 220 and the clamping member 240, magnetic blocks with opposite magnetic forces can be respectively provided on the opposite sides of the first fixed block 221 and the second fixed block 241, so as to adsorb the two together when the two are attached, so as to ensure that the two can only be separated when driven by the screw 213.

[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An ultra-compact medium voltage switchgear, characterized in that: include: The switch cabinet body includes a low-voltage room, a busbar room and a cable room, and a cabinet door is installed on the opening side of the switch cabinet body; A closing assembly, comprising two guide seats, two winding members, three winding rods, two clamping members, two clamping rods and a connecting member; the two guide seats are horizontally arranged on the inner wall of the switch cabinet body, one winding member and one clamping member are movably mounted on each guide seat, the three winding rods are mounted between the two winding members, the three winding rods are arranged in a ring array around the central axis of the winding member, the two clamping rods are mounted between the two clamping members, one end of the connecting member is fixed on one of the winding rods, the connecting member is normally wound on the three winding rods, and the other end of the connecting member passes through between the two clamping rods and is fixed on the hinged side of the cabinet door; When the cabinet door is opened, the part of the connecting member wound on the winding rod is unfolded, and the winding member is pulled toward the clamping member, and the clamping member is rotated at this time to complete the fixing of the connecting member; when the cabinet door needs to be closed, the guide seat is activated by the infrared sensor or the distance sensor, and after activation, the guide seat drives the clamping member, and then the connecting member is affected by the winding member and is wound on the winding rod, and the cabinet door is closed; The guide seat comprises a guide rail, a screw and a first elastic member; a guide groove is arranged inside the guide rail, the screw is rotatably installed in the guide groove, two ends of the screw respectively pass through two ends of the guide rail, one end of the screw is transmission-connected with a driving member, the winding member is movably sleeved on the screw, the winding member is elastically connected to one end of the guide groove through the first elastic member, the clamping member is movably clamped in the guide groove, and the clamping member is threadedly connected to the screw; The winding member includes a first fixed block, a first clamping block and a first rotating block; the first clamping block is connected to the bottom end of the first fixed block, the first clamping block is movably clamped in the guide groove and connected to the first elastic member, the first fixed block is provided with a first mounting hole, the first rotating block is rotatably mounted in the first mounting hole, the first rotating block is provided with three second mounting holes, and the second mounting holes are used to mount the winding rod; The first fixed block is hollow inside, and a second elastic member is arranged inside the first fixed block. The second elastic member is arranged in an open ring structure, one end of the second elastic member is fixed to the first fixed block, and the other end of the second elastic member surrounds the first mounting hole and passes through the first mounting hole to be connected with the first rotating block; The clamping member includes a second fixed block, a second clamping block and a second rotating block; the second clamping block is connected to the bottom end of the second fixed block, the second clamping block is movably clamped in the guide groove and is threadedly connected to the screw rod, the second fixed block is provided with a fourth mounting hole, the second rotating block is rotatably mounted in the fourth mounting hole, the second rotating block is provided with two fifth mounting holes, and the fifth mounting holes are used to mount the clamping rod; The first clamping block is provided with a third mounting hole, and the first clamping block is movably sleeved on the screw rod through the third mounting hole; the second clamping block is provided with a sixth mounting hole, and the second clamping block is threadedly connected to the screw rod through the sixth mounting hole; The second fixed block is hollow inside, and two arc-shaped plates are symmetrically arranged inside the second fixed block. A plurality of third clamping blocks are installed on a side of the arc-shaped plate facing the fifth mounting hole. A plurality of clamping grooves cooperating with the third clamping blocks are opened on the surface of the second rotating block, and the arc-shaped plate is elastically connected to the inner wall of the second fixed block through a third elastic member. The arc plate can be bent under force, and a plurality of positioning rods are connected to a side of the arc plate facing away from the fifth mounting hole. The end of the positioning rod facing away from the arc plate is inserted into a positioning tube, and the positioning tube is fixed on the inner wall of the second fixed block. The third elastic member is sleeved on the positioning rod, and the two ends of the third elastic member are respectively connected to the arc plate and the positioning tube.

2. The ultra-compact medium voltage switchgear according to claim 1, characterized in that: The connecting part includes a sleeve portion, a bent portion and a fixed portion. The sleeve portion is arranged in a cylindrical structure and is sleeved on one of the winding rods. One end of the fixed portion is fixed to the hinge side of the cabinet door, one end of the bent portion is connected to the sleeve portion, and the other end of the bent portion passes through between the two clamping rods and is connected to the other end of the fixed portion.

3. The ultra-compact medium voltage switchgear according to claim 2, characterized in that: The third clamping block is arranged in a right-angled triangle structure, and the right-angle end of the third clamping block is directly opposite to the central axis of the second rotating block.

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