A high and low voltage switch cabinet with good safety performance

Abstract

The present invention discloses a high- and low-voltage switch cabinet with good safety performance, which relates to the technical field of switch cabinets, including a cabinet body, both sides of which are connected with exhaust plates, and the inner cavity of the cabinet body is provided with multiple groups of pads, and the ends of the pads are provided with adjustment components, and the electrical components are limited by the adjustment components; the high- and low-voltage switch cabinet with good safety performance, when placing the electrical components inside the sleeve, by adjusting the position of the guide rod, in conjunction with the slide groove opened on one side thereof, synchronously drives the movable rod slidably installed inside the slide groove to move, and because the upper end of the movable rod is connected to the moving block, when the movable rod moves, the movable block is synchronously driven to move and move closer to the middle position of the sleeve, so as to clamp the outer surface of the electrical component installation part, and ensure the stability of the overall electrical component. At the same time, sufficient space is reserved for daily maintenance and overhaul of the equipment, so that technicians can safely and conveniently operate and repair.

Description

Technical Field

[0001] The invention relates to switch cabinet technology, and in particular to a high and low voltage switch cabinet with good safety performance. Background Art

[0002] A switchgear is an electrical device that opens, closes, controls and protects the power system during power generation, transmission, distribution and energy conversion. Its interior is mainly composed of circuit breakers, disconnectors, load switches, operating mechanisms, mutual inductors and various protective devices. It is widely used in power distribution operations in various occasions such as power plants, substations, residential factories, high-rise buildings, etc.

[0003] The Chinese invention patent application with publication number CN115528560A discloses a high and low voltage switch cabinet, in which the placement device used can realize the rapid adjustment of the installation position of the high and low voltage switches, and the switch position can continue to be adjusted after the high and low voltage switches are installed, thereby improving the efficiency of the installation of the high and low voltage switches and improving the flexibility of the use of the switch cabinet. The placement device used can realize the buffering function when the high and low voltage switches are moved, avoiding the phenomenon of too many high and low voltage switches installed on the same horizontal frame causing the falling speed to be too fast, thereby avoiding the collision of the high and low voltage switches and improving the safety of the use of the switch cabinet.

[0004] When adjusting the installation position of the high and low voltage switches, the locking screw releases the limit on the cross frame. Since there are too many high and low voltage switches installed on the cross frame, the cross frame moves downward too fast, making the high and low voltage switches prone to collision, thereby reducing the safety of the switch cabinet.

[0005] Since numerous electrical components are centrally arranged inside the switch cabinet, a large amount of heat energy will be generated during operation. When the existing switch cabinet adopts air cooling or liquid cooling for heat dissipation, the main space inside the switch cabinet is subjected to overall heat dissipation. However, the heat generated by each electrical component will vary greatly due to different working principles and durations. When the overall heat dissipation is performed, the heat dissipation uniformity is poor, which can easily lead to some electrical components with high heat being unable to discharge heat in time, resulting in overtemperature. As a result, there are great safety hazards during long-term operation, and the service life of such electrical components is greatly affected. Therefore, a high and low voltage switch cabinet with good safety performance has been developed. Summary of the invention

[0006] The purpose of the present invention is to provide a high and low voltage switch cabinet with good safety performance to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: A high and low voltage switch cabinet with good safety performance, comprising a cabinet body, both sides of which are connected to exhaust plates, and the inner cavity of the cabinet body is provided with multiple groups of pads, and the ends of the pads are provided with adjustment components, and the electrical components are limited by the adjustment components;

[0008] Wherein, the adjustment assembly comprises a bottom plate connected to the backing plate, a collar is rotatably mounted at the middle position of one end of the bottom plate, a positioning rod is arranged in the inner cavity of the collar, one end of the positioning rod is connected to one end of the bottom plate, and a pressing block is slidably mounted on the outer surface of the positioning rod, an elastic member is sleeved on the outer surface of the positioning rod, one end of the elastic member is connected to the pressing block, and the other end is connected to the bottom plate;

[0009] A clamping block is symmetrically arranged at one end of the bottom plate and located in the inner cavity of the collar, a ratchet gear is rotatably installed in the inner cavity of the collar and located between the two clamping blocks, the outer surface of the ratchet gear is clamped with the opposite side of the two clamping blocks, and the lower end of the ratchet gear is connected to the inner wall of the collar;

[0010] A push block is rotatably mounted on the outer surface of the pressing block, and a pull rod is rotatably mounted on one end of the pushing block away from the pressing block, and one end of the pull rod is rotatably connected to the upper end of the clamping block;

[0011] A movable block is symmetrically rotatably mounted on the end of the collar, and a sleeve is provided at one end of the movable block away from the collar, through which the electrical device is restricted;

[0012] An exhaust component is assembled in the inner cavity of the cabinet, and the end of the exhaust component is in contact with the outer surface of the exhaust plate, so that the hot air inside the cabinet is discharged through the exhaust component.

[0013] As a further optimization solution of the present invention, two limit plates are provided at one end of the base plate, and the two limit plates are respectively located at diagonally opposite corners of the base plate, and the inner wall of the limit plate is slidably connected to the lower end of the sleeve.

[0014] As a further optimization scheme of the present invention, a guide groove is provided on the outer surface of the sleeve, a guide rod is slidably mounted on the inner wall of the guide groove, and a plurality of groups of slide grooves are evenly provided on one side of the guide rod.

[0015] As a further optimization scheme of the present invention, a plurality of groups of moving blocks are evenly arranged on the inner wall of the sleeve, and a movable rod is arranged at the lower end of the moving block, and the outer surface of the movable rod is slidably connected to the inner wall of the slide groove.

[0016] As a further optimization scheme of the present invention, the exhaust assembly includes a connecting plate connected to the cabinet, a column is provided at one end of the connecting plate, a driving member is provided at one end of the column, and one end of the driving member passes through and extends to the other end of the column.

[0017] As a further optimization solution of the present invention, a rotating block is provided at the output end of the driving member, and an extrusion rod is rotatably mounted at one end of the rotating block away from the center position.

[0018] As a further optimization solution of the present invention, an extrusion cylinder is provided at one end of the column and below the rotating block, and the inner wall of the extrusion cylinder is slidably connected to the outer surface of the extrusion rod.

[0019] As a further optimization scheme of the present invention, one side of the extrusion cylinder is connected to an air inlet cylinder, and a sphere is provided in the inner cavity of the air inlet cylinder. Meanwhile, a ring is provided on the inner wall of the air inlet cylinder, and one side of the ring is in contact with the sphere.

[0020] As a further optimization solution of the present invention, a baffle is provided on the inner wall of the air inlet cylinder and close to one end of the extrusion cylinder.

[0021] As a further optimization solution of the present invention, the lower end of the extrusion cylinder is connected to an adjusting block, and an exhaust pipe is provided at the end of the adjusting block.

[0022] Compared with the prior art, the present invention provides a high and low voltage switch cabinet with good safety performance. When the clamping block is separated from the ratchet gear, the ring can be rotated so that the movable block installed on the ring can synchronously drive the sleeve to move until it reaches the optimal position and stops, thereby adjusting the distance between the two electrical components and reducing the electromagnetic interference generated by the electrical components inside the cabinet.

[0023] When placing the electrical device inside the sleeve, by adjusting the position of the guide rod and cooperating with the slide slot opened on one side thereof, the movable rod installed inside the slide slot is synchronously driven to move. Since the upper end of the movable rod is connected to the moving block, when the movable rod moves, the moving block is synchronously driven to move and move closer to the middle position of the sleeve, thereby clamping the outer surface of the electrical device installation part to ensure the stability of the overall electrical device. At the same time, sufficient space is reserved for daily maintenance and overhaul of the equipment, so that technicians can operate and repair safely and conveniently.

[0024] When the extrusion rod moves upward, the gas is pressed into the extrusion barrel, so that the ball moves to one side of the baffle, and a gap is formed between the ball and the ring, so that the hot gas inside the gas cabinet enters the extrusion barrel through the gap, and when the extrusion rod moves downward, the gas is squeezed, so that the ball moves to one side of the ring until the inner wall of the ring fits the outer surface of the ball and stops, so that the gas inside the extrusion barrel is transferred to the outside of the cabinet through the exhaust pipe, and the exhaust plate on the other side of the cabinet is used to introduce external gas, so as to ensure the stable interaction of the airflow inside the cabinet. This reduces heat accumulation and avoids excessive temperature in the switch cabinet, which affects the use of internal electrical components. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0027] Figure 2 A cross-sectional view of the overall internal structure provided by an embodiment of the present invention;

[0028] Figure 3 A schematic diagram of the structure of an adjustment component provided in an embodiment of the present invention;

[0029] Figure 4 A cross-sectional view of the internal structure of the adjustment component provided by an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of a sleeve structure provided in an embodiment of the present invention;

[0031] Figure 6 A cross-sectional view of the internal structure of a sleeve provided by an embodiment of the present invention;

[0032] Figure 7 A schematic diagram of the exhaust assembly structure provided by an embodiment of the present invention;

[0033] Figure 8 A cross-sectional view of the internal structure of an exhaust assembly provided in an embodiment of the present invention.

[0034] Description of reference numerals:

[0035] 1. Cabinet; 2. Adjustment component; 3. Exhaust component; 11. Pad; 12. Exhaust plate; 21. Bottom plate; 211. Limit plate; 22. Ring; 221. Movable block; 23. Ratchet gear; 24. Clamping block; 25. Positioning rod; 26. Elastic member; 27. Pressing block; 28. Pushing block; 281. Pull rod; 29. ​​Sleeve; 291. Guide groove; 292. Guide rod; 293. Slide groove; 294. Moving block; 295. Movable rod; 31. Connecting plate; 32. Column; 33. Driving member; 34. Rotating block; 35. Extrusion rod; 36. Extrusion cylinder; 37. Intake cylinder; 371. Sphere; 372. Ring; 373. Baffle; 38. Adjustment block; 39. Exhaust pipe. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Example: See Figure 1-Figure 8 A high and low voltage switch cabinet with good safety performance includes a cabinet body 1, both sides of the cabinet body 1 are connected with exhaust plates 12, and the inner cavity of the cabinet body 1 is provided with multiple groups of pads 11, and the ends of the pads 11 are provided with adjustment components 2, and the electrical components are limited by the adjustment components 2.

[0039] In this solution, the exhaust plate 12 is provided with a plurality of holes inclined downwards, which are used to exhaust the hot air inside the cabinet 1, and the holes inclined downwards prevent the entry of rainwater from the outside. The pad 11 provided inside the cabinet 1 can be placed at will, and is connected to the cabinet 1 by means of screws or other fixing parts.

[0040] Furthermore, the adjustment component 2 includes a base plate 21 connected to the pad 11, a ring 22 is rotatably installed at the middle position of one end of the base plate 21, a positioning rod 25 is provided in the inner cavity of the ring 22, one end of the positioning rod 25 is connected to one end of the base plate 21, and a pressing block 27 is slidably installed on the outer surface of the positioning rod 25, and an elastic member 26 is sleeved on the outer surface of the positioning rod 25, one end of the elastic member 26 is connected to the pressing block 27, and the other end is connected to the base plate 21.

[0041] A clamping block 24 is symmetrically arranged at one end of the base plate 21 and located in the inner cavity of the collar 22. A ratchet gear 23 is rotatably installed in the inner cavity of the collar 22 and located between the two clamping blocks 24. The outer surface of the ratchet gear 23 is clamped with the opposite side of the two clamping blocks 24, and the lower end of the ratchet gear 23 is connected to the inner wall of the collar 22.

[0042] A push block 28 is rotatably mounted on the outer surface of the pressing block 27 , and a pull rod 281 is rotatably mounted on one end of the pushing block 28 away from the pressing block 27 , one end of the pull rod 281 is rotatably connected to the upper end of the clamping block 24 .

[0043] A movable block 221 is symmetrically rotatably mounted at the end of the collar 22 , and a sleeve 29 is provided at one end of the movable block 221 away from the collar 22 , through which the electrical device is restricted.

[0044] In this embodiment, the elastic member 26 is an elastic member such as a spring. When the pressing block 27 moves up and down on the positioning rod 25, the elastic member 26 is squeezed. Since the push block 28 is rotatably installed on the outer surface of the pressing block 27, when the pressing block 27 moves, the push block 28 is synchronously driven to move to both sides. When the push block 28 moves, the pull rod 281 rotatably installed at the end of the push block 28 is driven to move synchronously to both sides, so that the clamping block 24 rotatably connected to the pull rod 281 moves, and at the same time, one end of the clamping block 24 is rotatably connected to the end of the base plate 21, so that the clamping block 24 rotates around the connection with the base plate 21, and the outer surface of the clamping block 24 is separated from the outer surface of the ratchet gear 23.

[0045] Since the lower end of the ratchet gear 23 is connected to the inner wall of the collar 22 , a through hole is formed at one end of the ratchet gear 23 , and one end of the positioning rod 25 passes through the through hole and is connected to the bottom plate 21 .

[0046] When the clamping block 24 is separated from the ratchet gear 23, the ring 22 can be rotated so that the movable block 221 installed on the ring 22 can synchronously drive the sleeve 29 to move until it reaches the optimal position and stops, thereby adjusting the distance between the two electrical components and reducing the electromagnetic interference generated by the electrical components inside the cabinet 1.

[0047] Furthermore, two limiting plates 211 are provided at one end of the bottom plate 21 , and the two limiting plates 211 are respectively located at diagonally opposite corners of the bottom plate 21 , and the inner wall of the limiting plate 211 is slidably connected to the lower end of the sleeve 29 .

[0048] Specifically, a movable groove is formed at one end of the limiting plate 211, and the inner wall of the movable groove is slidably connected to the lower end of the sleeve 29, while limiting the movable track of the sleeve 29 to prevent it from colliding with other components when moving.

[0049] Furthermore, a guide groove 291 is formed on the outer surface of the sleeve 29 , a guide rod 292 is slidably mounted on the inner wall of the guide groove 291 , and a plurality of slide grooves 293 are evenly formed on one side of the guide rod 292 .

[0050] The inner wall of the sleeve 29 is evenly provided with a plurality of groups of moving blocks 294 , and the lower end of the moving block 294 is provided with a moving rod 295 , and the outer surface of the moving rod 295 is slidably connected to the inner wall of the slide groove 293 .

[0051] Specifically, when the electrical component is placed inside the sleeve 29, by adjusting the position of the guide rod 292 and cooperating with the slide groove 293 opened on one side thereof, the movable rod 295 slidably installed inside the slide groove 293 is synchronously driven to move. Since the upper end of the movable rod 295 is connected to the movable block 294, when the movable rod 295 moves, the movable block 294 is synchronously driven to move and move closer to the middle position of the sleeve 29, thereby clamping the outer surface of the installation part of the electrical component to ensure the stability of the overall electrical component.

[0052] Furthermore, the exhaust assembly 3 is assembled in the inner cavity of the cabinet 1 , and the end of the exhaust assembly 3 is in contact with the outer surface of the exhaust plate 12 , so that the hot air inside the cabinet 1 is discharged through the exhaust assembly 3 .

[0053] The exhaust assembly 3 includes a connecting plate 31 connected to the cabinet 1, a column 32 is provided at one end of the connecting plate 31, a driving member 33 is provided at one end of the column 32, and one end of the driving member 33 penetrates and extends to the other end of the column 32. A rotating block 34 is provided at the output end of the driving member 33, and an extrusion rod 35 is installed at one end of the rotating block 34 and rotated away from the center. An extrusion cylinder 36 is provided at one end of the column 32 and below the rotating block 34, and the inner wall of the extrusion cylinder 36 is slidably connected to the outer surface of the extrusion rod 35.

[0054] In this embodiment, the driving member 33 is a device with power output such as a motor, and is connected to an external control device, so that when the driving member 33 is started, the rotating block 34 arranged at its output end is driven to rotate. Since an extrusion rod 35 is rotatably installed at one end of the rotating block 34, and the extrusion rod 35 is located at the edge of the end of the rotating block 34, when the rotating block 34 rotates, the extrusion rod 35 is driven to move up and down.

[0055] At the same time, the inner wall of the extrusion cylinder 36 is slidably connected to the outer surface of the extrusion rod 35, so that when the extrusion rod 35 moves up and down, the gas inside the extrusion cylinder 36 is pushed to move, so that the gas inside the extrusion cylinder 36 is quickly discharged.

[0056] The control device can select a single-chip microcomputer as the control end. In this embodiment, the single-chip microcomputer is a typical embedded microcontroller (Micro controller unit), which is composed of an arithmetic unit, a controller, a memory, an input and output device, etc., which is equivalent to a microcomputer. Compared with the general-purpose microprocessor used in personal computers, it emphasizes self-supply (no external hardware) and cost saving. Its biggest advantage is that it is small in size and can be placed inside the instrument, but it has a small storage capacity, a simple input and output interface, and low functional consumption.

[0057] Furthermore, one side of the extrusion cylinder 36 is connected to the air inlet cylinder 37, and the inner cavity of the air inlet cylinder 37 is provided with a sphere 371, and the inner wall of the air inlet cylinder 37 is provided with a ring 372, and one side of the ring 372 is in contact with the sphere 371. A baffle 373 is provided on the inner wall of the air inlet cylinder 37 and close to one end of the extrusion cylinder 36.

[0058] The lower end of the extrusion cylinder 36 is connected to an adjusting block 38 , and an exhaust pipe 39 is provided at the end of the adjusting block 38 .

[0059] Specifically, the outer surface of the sphere 371 is covered with rubber or other components with anti-slip sealing effect, and when the extrusion rod 35 moves upward, the gas is pressed into the extrusion cylinder 36, so that the sphere 371 moves to one side of the baffle 373, and a gap is generated between the sphere 371 and the ring 372, so that the hot air inside the gas cabinet 1 enters the extrusion cylinder 36 through the gap, and when the extrusion rod 35 moves downward, the gas is squeezed, so that the sphere 371 moves to one side of the ring 372 until the inner wall of the ring 372 fits with the outer surface of the sphere 371 and stops, so that the gas inside the extrusion cylinder 36 is transferred to the outside of the cabinet 1 through the exhaust pipe 39, and the exhaust plate 12 on the other side of the cabinet 1 is cooperated to introduce external gas, thereby ensuring the stable interaction of airflow inside the cabinet 1.

[0060] The inner cavity of the regulating block 38 is provided with a structure identical to that of the air inlet cylinder 37, so that when the extrusion cylinder 36 inhales gas, no gas will flow into the exhaust pipe 39 into the extrusion cylinder 36, thereby accelerating the discharge of hot gas inside the cabinet 1, so that the internal temperature of the cabinet 1 is within a stable range.

[0061] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high and low voltage switch cabinet with good safety performance, characterized in that: It comprises a cabinet (1), both sides of the cabinet (1) are connected to exhaust plates (12), and the inner cavity of the cabinet (1) is provided with a plurality of groups of pads (11), and the ends of the pads (11) are provided with adjustment components (2), and the electrical components are restricted by the adjustment components (2); The adjusting assembly (2) comprises a bottom plate (21) connected to the backing plate (11), a collar (22) is rotatably mounted at the middle position of one end of the bottom plate (21), a positioning rod (25) is arranged in the inner cavity of the collar (22), one end of the positioning rod (25) is connected to one end of the bottom plate (21), a pressing block (27) is slidably mounted on the outer surface of the positioning rod (25), an elastic member (26) is sleeved on the outer surface of the positioning rod (25), one end of the elastic member (26) is connected to the pressing block (27), and the other end is connected to the bottom plate (21); A clamping block (24) is symmetrically arranged at one end of the bottom plate (21) and located in the inner cavity of the collar (22); a ratchet gear (23) is rotatably mounted in the inner cavity of the collar (22) and located between the two clamping blocks (24); the outer surface of the ratchet gear (23) is clamped with the opposite side of the two clamping blocks (24); and the lower end of the ratchet gear (23) is connected to the inner wall of the collar (22); A push block (28) is rotatably mounted on the outer surface of the pressing block (27), and a pull rod (281) is rotatably mounted on one end of the pushing block (28) away from the pressing block (27), and one end of the pull rod (281) is rotatably connected to the upper end of the clamping block (24); A movable block (221) is symmetrically rotatably mounted on the end of the collar (22), and a sleeve (29) is provided at one end of the movable block (221) away from the collar (22), and the electrical device is restricted by the sleeve (29); Two limit plates (211) are provided at one end of the bottom plate (21), and the two limit plates (211) are respectively located at diagonally opposite corners of the bottom plate (21), and the inner wall of the limit plate (211) is slidably connected to the lower end of the sleeve (29); The outer surface of the sleeve (29) is provided with a guide groove (291), the inner wall of the guide groove (291) is slidably mounted with a guide rod (292), and one side of the guide rod (292) is evenly provided with a plurality of groups of slide grooves (293); The inner wall of the sleeve (29) is evenly provided with a plurality of groups of moving blocks (294), and the lower ends of the moving blocks (294) are provided with moving rods (295), and the outer surfaces of the moving rods (295) are slidably connected to the inner wall of the sliding groove (293); An exhaust component (3) is mounted in the inner cavity of the cabinet (1), and an end of the exhaust component (3) is in contact with the outer surface of the exhaust plate (12), so that hot air inside the cabinet (1) is discharged through the exhaust component (3).

2. A high and low voltage switch cabinet with good safety performance according to claim 1, characterized in that: The exhaust assembly (3) comprises a connecting plate (31) connected to the cabinet (1), one end of the connecting plate (31) is provided with a column (32), one end of the column (32) is provided with a driving member (33), and one end of the driving member (33) penetrates and extends to the other end of the column (32).

3. A high and low voltage switch cabinet with good safety performance according to claim 2, characterized in that: A rotating block (34) is provided at the output end of the driving member (33), and an extrusion rod (35) is rotatably mounted at one end of the rotating block (34) away from the center position.

4. A high and low voltage switch cabinet with good safety performance according to claim 3, characterized in that: An extrusion cylinder (36) is provided at one end of the column (32) and below the rotating block (34), and the inner wall of the extrusion cylinder (36) is slidably connected to the outer surface of the extrusion rod (35).

5. A high and low voltage switch cabinet with good safety performance according to claim 4, characterized in that: One side of the extrusion cylinder (36) is connected to an air inlet cylinder (37), and a sphere (371) is provided in the inner cavity of the air inlet cylinder (37). Meanwhile, a circular ring (372) is provided on the inner wall of the air inlet cylinder (37), and one side of the circular ring (372) is in contact with the sphere (371).

6. A high and low voltage switch cabinet with good safety performance according to claim 5, characterized in that: A baffle (373) is provided on the inner wall of the air inlet cylinder (37) and at one end close to the extrusion cylinder (36).

7. A high and low voltage switch cabinet with good safety performance according to claim 6, characterized in that: The lower end of the extrusion cylinder (36) is connected to an adjusting block (38), and an exhaust pipe (39) is provided at the end of the adjusting block (38).

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