Medium-voltage switch cabinet

Abstract

The invention belongs to the technical field of switch cabinets, and particularly relates to a medium-voltage switch cabinet. Comprising a switch cabinet; the switch cabinet is provided with a door body; a first guide rail is fixedly mounted in the switch cabinet; evenly-arranged components are installed on the guide rail. Second guide rails are arranged on the upper and lower sides of the first guide rail; a stabilizing assembly is arranged on the second guide rail; the stabilizing assembly comprises a moving block; circular grooves are formed in the sides, facing the wiring terminals, of the moving blocks; a rotary drum is rotationally connected into the circular groove; a vertical cylinder is arranged in the rotating cylinder; two notches are formed in the end of the side, attached to the circular groove, of the vertical cylinder. And extrusion blocks are rotationally connected into the two notches. Extrusion grooves are formed in the end surfaces of the opposite sides of the two extrusion blocks; two opposite metal half cylinders are arranged at the top of the vertical cylinder; according to the invention, through the arrangement of the stabilizing assembly, the problem of insufficient contact area or infirm locking of the wire core during wiring can be avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of switch cabinets, in particular to a medium-voltage switch cabinet. BACKGROUND

[0002] A switch cabinet is a centralized collection of circuit breakers, fuses and switches that protect, control and isolate electrical equipment. Electrical protection devices are installed in metal structures, and one or more of these structures are collectively referred to as a switch cabinet. Switch cabinets are commonly found in power transmission and distribution systems and large and medium-sized commercial or industrial facilities;

[0003] Inside a medium-voltage switch cabinet, there are various components such as circuit breakers. When wiring the components, the wires are generally inserted into the screw wire frame inside the components. During operation, the insulating sheath of the wire is peeled off to the appropriate length, the wire core is placed in the screw wire frame, and then the screw is tightened to make the wire and the conductive part of the component in close contact, thereby realizing the connection and control of the circuit.

[0004] During the wiring process, if the wire head is loose, the actual contact area of the wire head and the screw wire frame will be less than the ideal value. At the same time, the loose wire head is difficult to be uniformly compressed by the screw, and the screw fastening may not be firm. When using the screw wire frame to lock the wire head, if the operation is not proper or the wire head is soft, the wire head is easy to be pressed apart. The pressed apart wire head cannot be effectively gathered, so that the locking effect is greatly reduced, and the firmness of the connection cannot be guaranteed. Once the contact area at the wiring point is insufficient or the locking is not firm, the contact resistance will increase significantly, and excessive heat will be generated at the wiring point, causing serious overheating. Long-term overheating may cause the wire to be ablated, damage the insulation layer, and even cause an electrical fire, endangering the safe and stable operation of the power system.

[0005] Currently, in order to improve the wiring effect, the wire head is often compressed in the wiring lug, and then the wiring lug is connected to the inside of the component. The wiring lug is generally made of metal material, which can increase the contact area of the wire and the air switch wiring end and improve the reliability of the connection. However, when the switch cabinet is in a vibrating environment, especially in a long-term high-vibration environment, because the wire head is pressed in the wiring lug, the vibration will cause a continuous relative movement between the wiring lug and the wire head, and the originally compressed part may gradually loosen. Long-term vibration will also cause fatigue damage to the metal materials of the wiring lug and the wire, causing the wire head to fall off from the wiring lug. After the wire head falls off, the circuit will be disconnected, causing the corresponding electrical equipment to malfunction. At the same time, if the fallen wire head contacts other conductive parts, it may cause a short circuit fault, further expanding the accident range and seriously affecting the normal power supply of the entire medium-voltage distribution system. SUMMARY

[0006] In order to make up for the deficiencies of the prior art, solve the above technical problems, the present application provides a medium voltage switch cabinet, by setting a stable component, can avoid the problem of insufficient contact area or locking not firm when wiring; The specific structure is as follows:

[0007] A medium voltage switch cabinet, comprising a switch cabinet; The door body is installed on the switch cabinet; The first guide rail is fixedly installed in the switch cabinet;

[0008] The guide rail is installed with uniformly arranged components, and the top and bottom of the components are provided with wiring grooves; The wiring terminal is installed in the wiring groove, and the wiring terminal is a screw wire pressing frame, and is composed of a screw and a wire pressing frame;

[0009] The first guide rail is provided with a second guide rail on the upper and lower sides, and the second guide rail is away from the back of the switch cabinet; The second guide rail is provided with a stable component;

[0010] The stable component comprises a moving block; The moving block slides on the second guide rail through the sliding frame; The side of the moving block facing the wiring terminal is provided with a circular groove; The rotating cylinder is rotatably connected in the circular groove, and the rotating cylinder is made of flame-retardant insulating material; The inner circle of the rotating cylinder is provided with a thread;

[0011] The inner part of the rotating cylinder is provided with a vertical cylinder, and the outer circle of the vertical cylinder is provided with a thread, which is engaged with the inner thread of the rotating cylinder;

[0012] The bottom of the rotating cylinder is attached to the groove bottom of the circular groove; The sliding groove is formed in the moving block, and the sliding groove is rectangular and communicates with the circular groove; The sliding groove penetrates the moving block;

[0013] The end of the vertical cylinder attached to the circular groove is provided with two missing grooves; The extrusion block is rotatably connected in the two missing grooves, and the extrusion block slides in the sliding groove, and the overall width of the two extrusion blocks is less than the width of the sliding groove; The two extrusion blocks that are attached to each other form a trapezoid; The inner circle of the bottom of the rotating cylinder is designed with a rounded corner;

[0014] The end face of the two extrusion blocks opposite to each other is provided with an extrusion groove, and the extrusion grooves on the two extrusion blocks correspond to each other and form a cylindrical groove;

[0015] The top of the vertical cylinder is provided with two opposite metal half cylinders, and the two metal half cylinders are attached to each other to form a cylinder; The metal half cylinder is fixedly connected with an elastic sheet at the bottom, and the other side of the elastic sheet is fixedly connected in the inner circle of the vertical cylinder; The metal half cylinder is made of conductive metal material; The inner circle of the metal half cylinder is designed with a rounded corner.

[0016] As a preferred mode of the present application, a through hole is formed in the metal half cylinder away from the second guide rail, and the diameter of the through hole is greater than the diameter of the screw on the insulating terminal;

[0017] The clamping teeth are evenly arranged on the through hole inner ring.

[0018] As a preferred mode of the present application, a metal guide sheet is fixed on the surface of the metal half cylinder outer ring close to the second guide rail.

[0019] The height of the metal guide sheet is greater than the height of the metal half cylinder.

[0020] As a preferred mode of the present application, the top of the metal guide sheet is designed with a rounded corner.

[0021] As a preferred mode of the present application, the extrusion block is made of rubber material and will deform when extruded.

[0022] As a preferred mode of the present application, the metal half cylinder in the vertical cylinder has different diameter specifications.

[0023] The vertical cylinder itself has the same diameter, and only the diameter of the metal half cylinder connected to the elastic sheet is different.

[0024] As a preferred mode of the present application, two filling blocks are fixed on the two side surfaces of the extrusion block.

[0025] After the two extrusion blocks are attached to each other, the filling blocks on the two extrusion blocks are also attached to each other.

[0026] The side of the vertical cylinder facing the components is fixed with a rubber ring, and the rubber ring is made of elastic insulating rubber material.

[0027] As a preferred mode of the present application, the side of the sliding frame facing the components is provided with a threaded groove.

[0028] The threaded groove is threadedly engaged with a bolt, and the bolt abuts against the second sliding rail.

[0029] As a preferred mode of the present application, the outer surface of the rotating cylinder is provided with a plurality of limiting assemblies.

[0030] Each limiting assembly includes two limiting rods, and the limiting rods are rotated on the rotating cylinder through a rotating shaft and a torsional spring; under the action of the torsional spring, the limiting rods are initially vertically upward.

[0031] The beneficial effects of the present application are as follows:

[0032] 1. The medium-voltage switchgear described in the present invention can avoid the situation where the wire core is obstructed and loose during the process of inserting the wire core into the terminal by limiting the wire core and gathering it in the metal half-cylinder when wiring components without using the wiring ears. If the wire core is loose, it will cause the wire core to not be evenly compacted by the screw, resulting in an unstable situation. At the same time, when the metal half-cylinder enters the terminal and is squeezed by the screw, it can avoid the wire core being directly squeezed by the screw without being limited, causing the wire core to be crushed and unstable. By using the metal half-cylinder to limit the wire core, it can avoid the problem of insufficient contact area or loose locking of the wire core during wiring, thereby avoiding a significant increase in contact resistance, which will cause excessive heat to be generated at the wiring point and severe heating; a long period of overheating may burn the wires and damage the insulation layer. In severe cases, it may even cause an electrical fire, endangering the safe and stable operation of the power system.

[0033] 2. The medium-voltage switchgear described in the present invention uses metal half-cylinders to restrain and gather the wire cores, thereby avoiding the problems of loose wire cores, insufficient contact area and loose locking. Therefore, there is no need to use wiring ears for wiring, thereby avoiding the situation where the wiring ears and the wire cores are fatigue damaged when used in a vibration environment after wiring with wiring ears, resulting in the wire cores falling off, breaking the circuit or even breaking failure. At the same time, since the vertical cylinder fits the components and the vertical cylinder thread is engaged in the rotating cylinder, the vertical cylinder can be pressed against the surface of the component. When used in a vibration environment, the wire cores are restrained in the metal half-cylinder, thereby avoiding the wire cores from detaching from the wiring terminals. At the same time, if the components are in a strong vibration environment for a long time, causing the vertical cylinder to gradually move away from the components, the wire cores will also move away from the metal half-cylinder and be restrained in the metal half-cylinder, thereby avoiding the fallen wire cores from touching other conductive positions and causing short circuit failures.

[0034] 3. In the medium-voltage switchgear described in the present invention, since the screws are inserted into the through holes, the metal half-tube can be limited, and the vertical tube can be indirectly limited, thereby preventing the vertical tube from gradually moving away from the wiring slot in a strong vibration environment, causing the components to be short-circuited. At the same time, since the screws are limited by the retaining teeth, the screws can be prevented from being gradually shaken off in a vibration environment, resulting in the inability to tighten the wire core. At the same time, the presence of the metal guide can increase the contact area with the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below with reference to the accompanying drawings.

[0036] Figure 1 is a state diagram of the switchgear of the present invention;

[0037] Figure 2 It is the internal structure diagram of the switch cabinet of the present invention;

[0038] Figure 3 This is a diagram of the coordination structure of the stabilizing assembly and components in the present invention;

[0039] Figure 4 It is a diagram of the separated structure of the stabilizing component in the present invention;

[0040] Figure 5 This invention Figure 4 A partial enlarged view of the middle part;

[0041] Figure 6 This invention Figure 4 A partial enlarged view of point B in the middle;

[0042] Figure 7 In the present invention Figure 3 The main view;

[0043] Figure 8 This invention Figure 7 Cross-sectional view at CC in FIG;

[0044] Figure 9 This invention Figure 7 A partial enlarged view of point D in the middle;

[0045] Figure 10 This invention Figure 7 A partial enlarged view of point E in the middle.

[0046] In the figure: 1. switch cabinet; 11. first guide rail; 12. components; 121. wiring trough; 13. screws; 14. wire pressing frame; 15. second guide rail; 2. moving block; 21. sliding frame; 22. circular groove; 23. rotating cylinder; 24. vertical cylinder; 241. rubber ring; 25. slide groove; 26. extrusion block; 261. filling block; 27. extrusion groove; 28. metal half cylinder; 281. spring piece; 282. latching tooth; 283. metal guide piece; 29. ​​through hole; 3. limit rod; 31. bolt. DETAILED DESCRIPTION

[0047] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0048] like Figures 1 to 10 As shown, a medium voltage switchgear according to the present invention, as an embodiment of the present invention, comprises a switchgear 1; a door body is installed on the switchgear 1; a first guide rail 11 is fixedly installed inside the switchgear 1;

[0049] The guide rail is provided with uniformly arranged components 12, and the top and bottom of the components 12 are provided with wiring grooves 121; the wiring grooves 121 are provided with wiring terminals, and the wiring terminals are screw wire pressing frames, and are composed of screws 13 and wire pressing frames 14;

[0050] The first guide rail 11 is provided with second guide rails 15 on the upper and lower sides, and the second guide rails 15 are away from the back of the switch cabinet 1; the second guide rails 15 are provided with stable components;

[0051] The stable components comprise a moving block 2; the moving block 2 slides on the second guide rail 15 through a sliding frame 21; one side of the moving block 2 towards the wiring terminal is provided with a circular groove 22; the circular groove 22 is rotatably connected with a rotating cylinder 23, and the rotating cylinder 23 is made of flame-retardant insulating material; the inner circle of the rotating cylinder 23 is provided with threads;

[0052] The rotating cylinder 23 is provided with a vertical cylinder 24 inside, and the outer circle of the vertical cylinder 24 is provided with threads and is in mesh with the threads of the inner circle of the rotating cylinder 23;

[0053] The bottom of the rotating cylinder 23 is attached to the groove bottom of the circular groove 22; the moving block 2 is provided with a sliding groove 25 inside, and the sliding groove 25 is rectangular and communicates with the circular groove 22; the sliding groove 25 penetrates the moving block 2;

[0054] The vertical cylinder 24 is provided with two missing grooves on one side end which is attached to the circular groove 22; the two missing grooves are rotatably connected with extrusion blocks 26, and the extrusion blocks 26 slide in the sliding groove 25; the overall width of the two extrusion blocks 26 is less than the width of the sliding groove 25; the two extrusion blocks 26 which are attached to each other form a trapezoid; the bottom inner circle of the rotating cylinder 23 is designed with a rounded corner;

[0055] The opposite side end faces of the two extrusion blocks 26 are provided with extrusion grooves 27, and the extrusion grooves 27 on the two extrusion blocks 26 correspond to each other and form a cylindrical groove;

[0056] The vertical cylinder 24 is provided with two opposite metal half cylinders 28 on the top, and the two metal half cylinders 28 form a cylinder by being attached to each other; the metal half cylinders 28 are fixedly connected with elastic sheets 281 on the bottom, and the other side of the elastic sheets 281 is fixedly connected to the inner circle of the vertical cylinder 24; the metal half cylinders 28 are made of conductive metal material; the inner circle of the metal half cylinders 28 is designed with a rounded corner;

[0057] In implementation, first, the components 12 to be used are installed on the first guide rail 11, then the different components 12 are wired, when the components 12 are wired, the stable assembly on the second guide rail 15 is first pushed to move, the stable assembly will slide on the second guide rail 15 through the sliding frame 21, when the different stable assemblies move to be aligned with the wiring grooves 121 on the components 12, the wires of appropriate length are cut, then the wires are threaded from the sliding groove 25 of the moving block 2 towards the side of the wiring grooves 121, since the sliding groove 25 is provided with the opposite pressing blocks 26, the wires are first threaded from the pressing grooves 27 in the opposite pressing blocks 26, and continue to be threaded along the vertical cylinder 24, when the wire heads are located at the positions of the opposite metal half cylinders 28, the wires continue to be threaded between the opposite metal half cylinders 28, until the wires are threaded out of the metal half cylinders 28, when the wires are threaded out of the metal half cylinders 28, the part of the wires threaded out of the metal half cylinders 28 is stripped, so that the wire core is exposed, when the wire core is exposed, then the wires are pulled to move, and the exposed wire core is gradually retracted into the metal half cylinders 28, since the metal half cylinders 28 are connected in the vertical cylinder 24 through the elastic sheets 281, and the opposite metal half cylinders 28 are mutually adhered, in the process of the wire core being gradually retracted into the metal half cylinders 28, if the wire core appears to be loose, in the process of entering the metal half cylinders 28, the wire core will be gradually gathered, so that the gathered wire core is finally limited in the opposite metal half cylinders 28;

[0058] Subsequently, the wire can be connected into the component 12, as the wire slot 121 is opposite to the different stable assembly respectively, in the process of connecting, the rotating drum 23 rotates, as the vertical cylinder 24 is threadedly engaged with the rotating drum 23, thus when the rotating drum 23 rotates, the vertical cylinder 24 is pushed to gradually extend from the rotating drum 23, and gradually approaches the wire slot 121, at the same time, the metal half cylinder 28 and the wire core are moved, as the extrusion block 26 slides in the sliding groove 25, thus the sliding groove 25 limits the extrusion block 26, so as to limit the vertical cylinder 24, avoiding the vertical cylinder 24 from following the rotating drum 23 to appear from the rotation, in the process of gradually moving the vertical cylinder 24, the metal half cylinder 28 gradually extends into the wire slot 121 with the wire core, and is located in the screw wire pressing frame, at the same time, in the process of gradually moving the vertical cylinder 24, the extrusion block 26 is moved in the sliding groove 25, in the process of moving the extrusion block 26, it gradually enters the inside of the rotating drum 23, when the extrusion block 26 gradually enters the rotating drum 23, under the resistance of the rotating drum 23, the two extrusion blocks 26 are pushed to approach each other, and the wire in the extrusion groove 27 is extruded and fixed, avoiding that after the wire connection is completed, the wire will be separated from the metal half cylinder 28, when the metal half cylinder 28 enters the inside of the wire pressing frame 14, at this time, the vertical cylinder 24 is attached to the component 12, the rotating of the rotating drum 23 is stopped, then the screw 13 is rotated, when the screw 13 is rotated, it gradually enters the wire pressing frame 14, so as to press the wire core; after the component 12 in the switch cabinet 1 is connected, after debugging, it can be put into use;

[0059] In this process, when the component 12 is connected without the wire lug, by limiting the wire core in the metal half cylinder 28, it can avoid that the wire core is loose in the process of inserting the wire core into the wire terminal, if the wire core is loose, it will cause that the wire core cannot be uniformly compacted by the screw 13, resulting in the situation of being not firm, at the same time, when the metal half cylinder 28 enters the wire terminal and is extruded by the screw 13, it can avoid that the wire core is directly extruded by the screw 13 without limiting, resulting in that the wire core is scattered, so that the situation of being not firm appears, by limiting the wire core by the metal half cylinder 28, it can avoid that the wire core has insufficient contact area or is not firmly locked during the connection, so as to avoid that the contact resistance is significantly increased, which will cause that too much heat is generated at the connection, and the phenomenon of serious heating appears; the long-term overheating state may ablate the wire, damage the insulation layer, and even cause an electrical fire in serious cases, which endangers the safe and stable operation of the power system;

[0060] Meanwhile, by using the metal half cylinder 28 to limit the gathering of the wire core, the problems of loose wire core, insufficient contact area and insecure locking can be avoided, so there is no need to use the wiring lug for wiring, so as to avoid the fatigue damage of the wiring lug and the wire core after wiring with the wiring lug in the vibration environment, resulting in the wire core falling off, causing the circuit to be broken or even the circuit failure. At the same time, since the vertical cylinder 24 is attached to the component 12, and the vertical cylinder 24 is threadedly engaged in the rotating cylinder 23, the vertical cylinder 24 can be abutted against the surface of the component 12. When used in a vibration environment, since the wire core is limited in the metal half cylinder 28, the wire core can be prevented from being separated from the wiring terminal. If the component 12 is in a strong vibration environment for a long time, the vertical cylinder 24 gradually moves away from the component 12, and at this time the wire core also moves away from the metal half cylinder 28 and is limited in the metal half cylinder 28, so that the wire core that falls off can not touch other conductive positions to cause a short circuit failure.

[0061] As an embodiment of the present application, a metal half cylinder 28 is provided with a through hole 29 away from the second guide rail 15, and the diameter of the through hole 29 is greater than the diameter of the screw 13 on the insulating terminal;

[0062] The inner circle of the through hole 29 is provided with evenly arranged clamping teeth 282;

[0063] In this embodiment, a metal guide plate 283 is fixedly connected to the outer circle surface of the metal half cylinder 28 close to the second guide rail 15;

[0064] The height of the metal guide plate 283 is greater than the height of the metal half cylinder 28;

[0065] In this embodiment, the top of the metal guide plate 283 is designed with a rounded corner;

[0066] When the metal half cylinder 28 enters the terminal groove 121, the metal guide piece 283 gradually enters the terminal groove 121. Because the top of the metal guide piece 283 is designed with a rounded corner, the rounded corner contacts the side of the wire pressing frame 14 first during the movement of the metal guide piece 283, and gradually extrudes the metal guide piece 283. When the metal guide piece 283 is extruded, it pushes the metal half cylinder 28 connected thereto to extrude the other metal half cylinder 28, thereby improving the restriction effect on the wire core. When the metal guide piece 283 contacts the bottom of the terminal groove 121, the through hole 29 on the metal half cylinder 28 is aligned with the screw 13 at this time. Then, the screw 13 is gradually turned into the wire pressing frame 14, and then into the through hole 29. The screw 13 turned into the through hole 29 extrudes the wire core in the metal half cylinder 28. Then, the screw 13 is stopped, and then the rotating cylinder 23 is reversely rotated. The rotation drives the vertical cylinder 24 to move away from the terminal groove 121, and drives the through hole 29 to move. The moving through hole 29 gradually contacts the screw 13, and the clamping tooth 282 in the through hole 29 clamps the screw 13. During this process, the screw 13 is inserted into the through hole 29, thereby limiting the metal half cylinder 28 and indirectly limiting the vertical cylinder 24, thereby avoiding the situation that the vertical cylinder 24 gradually moves away from the terminal groove 121 in a strong vibration environment, causing the component 12 to be disconnected. Because the clamping tooth 282 limits the screw 13, the screw 13 cannot be shaken off in a vibration environment, which causes the wire core to be unable to be pressed tightly. The existence of the metal guide piece 283 can increase the contact area with the terminal.

[0067] As an embodiment of the application, the extrusion block 26 is made of rubber material, and the extrusion block 26 deforms when being extruded.

[0068] In this embodiment, the metal half cylinder 28 in the vertical cylinder 24 has different diameters.

[0069] The diameters of the vertical cylinders 24 are the same, and only the diameters of the metal half cylinders 28 connected with the elastic sheet 281 inside the vertical cylinder 24 are different.

[0070] In this embodiment, the two side surfaces of the extrusion block 26 are fixedly connected with two filling blocks 261.

[0071] After the two extrusion blocks 26 are attached to each other, the filling blocks 261 on the two extrusion blocks 26 are also attached to each other.

[0072] The side of the vertical cylinder 24 facing the component 12 is fixedly connected with a rubber ring 241, and the rubber ring 241 is made of elastic insulating rubber material.

[0073] In implementation, since the extrusion block 26 is made of rubber material and the metal half cylinder 28 has different specifications, when wiring different specifications of electric wires, the metal half cylinder 28 suitable for the electric wire can be selected, when replacing the metal half cylinder 28 of different specifications, the stable assembly is first dislocated with the component 12, then the rotating drum 23 is continuously rotated, the rotating drum 23 will gradually push the vertical cylinder 24 to extend out, at the same time, the extrusion block 26 will be gradually pushed into the rotating drum 23, when the vertical cylinder 24 completely extends out from the rotating drum 23, the vertical cylinder 24 and the extrusion block 26 are pulled out from the rotating drum 23, then the metal half cylinder 28 of the same specification is replaced, when replacing, the extrusion block 26 is first inserted into the rotating drum 23, then the vertical cylinder 24 is engaged with the thread in the rotating drum 23, the rotating drum 23 is reversely rotated, which will push the vertical cylinder 24 to gradually extend into the rotating drum 23, when the extrusion block 26 moves to the sliding groove 25, the operation is completed.

[0074] Specifically, since the vertical cylinder 24 is fixedly connected with the rubber ring 241, when the vertical cylinder 24 is attached to the component 12, the rubber ring 241 will be extruded, when the through hole 29 on the metal half cylinder 28 is in contact with the screw 13, the metal half cylinder 28 will move out of the wiring groove 121 by a distance, in the process of moving out of the vertical cylinder 24, the rubber ring 241 gradually recovers and is still attached to the surface of the component 12, since the extrusion block 26 is fixedly connected with the filling block 261, when the opposite extrusion block 26 is attached, the filling block 261 is also attached, so that the extrusion block 26 and the filling block 261 can be used to block the bottom of the vertical cylinder 24, and the rubber ring 241 can be used to block the position of the wiring groove 121, so that when the switch cabinet 1 is used in a dusty environment, the dust can not enter the wiring terminal, and the contact resistance can not be increased.

[0075] As an embodiment of the present application, the sliding frame 21 is provided with a threaded groove on the side facing the component 12.

[0076] The threaded groove is screw-engaged with a bolt 31, and the bolt 31 is abutted against the second sliding rail.

[0077] In the embodiment, the rotating drum 23 is provided with a plurality of limiting assemblies on the outer ring surface.

[0078] Each of the limiting assemblies comprises two limiting rods 3, and the limiting rods 3 are rotated on the rotating drum 23 through a rotating shaft and a torsional spring; under the action of the torsional spring, the limiting rods 3 are initially vertically upward.

[0079] In implementation, since the threaded groove of the sliding frame 21 is screw-engaged with the bolt 31, when the stable assembly moves to the appropriate position, the bolt 31 is rotated, the bolt 31 will be abutted against the second guide rail 15, so as to fix and limit the stable assembly.

[0080] At the same time, since there are multiple limit components when the outer ring surface of the rotating drum 23 rotates, when the rotating drum 23 completes its rotation, the two limit rods 3 opposite to the bolt 31 are pushed to rotate to a horizontal state, and the bolt 31 passes through the two limit rods 3 and then tightens against the second guide rail 15, so that the limit rod 3 can be limited and fixed, and the rotating drum 23 can be indirectly limited and fixed to prevent the rotating drum 23 from rotating in a vibration environment.

[0081] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0082] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A medium-voltage switchgear (1), comprising a switchgear (1); a door body is installed on the switchgear (1); a first guide rail (11) is fixedly installed inside the switchgear (1); Its characteristics are: Components (12) are evenly arranged on the guide rail, and wiring slots (121) are provided at the top and bottom of the components (12); wiring terminals are installed in the wiring slots (121); second guide rails (15) are provided on both the upper and lower sides of the first guide rail (11); and a stabilizing component is provided on the second guide rail (15); The stabilizing component comprises a moving block (2); the moving block (2) slides on the second guide rail (15) through a sliding frame (21); a circular groove (22) is provided on the side of the moving block (2) facing the terminal; a rotating cylinder (23) is rotatably connected in the circular groove (22); a thread is provided on the inner ring of the rotating cylinder (23); a vertical cylinder (24) is engaged with the internal thread of the rotating cylinder (23); A sliding groove (25) is provided in the moving block (2), and the sliding groove (25) is rectangular; Two notches are provided on one end of the vertical cylinder (24) where it is fitted with the circular groove (22); extrusion blocks (26) are rotatably connected in the two notches, and the extrusion blocks (26) slide in the slide groove (25); the two extrusion blocks (26) fitted together form a trapezoid; The end surfaces of the two extrusion blocks (26) on opposite sides are each provided with an extrusion groove (27); Two opposite metal half cylinders (28) are provided on the top of the vertical cylinder (24); a spring piece (281) is fixedly connected to the bottom of the metal half cylinder (28), and the other side of the spring piece (281) is fixedly connected to the inner circle of the vertical cylinder (24).

2. The medium voltage switchgear (1) according to claim 1, characterized in that: A through hole (29) is formed on a metal half cylinder (28) away from the second guide rail (15), and the diameter of the through hole (29) is larger than the diameter of the screw (13) on the insulating terminal; The inner circle of the through hole (29) is provided with evenly arranged latch teeth (282).

3. The medium voltage switchgear (1) according to claim 2, characterized in that: A metal guide piece (283) is fixedly connected to the outer ring surface of a metal half cylinder (28) close to the second guide rail (15); The height of the metal guide piece (283) is greater than the height of the metal half cylinder (28).

4. The medium voltage switchgear (1) according to claim 3, characterized in that: The top of the metal guide piece (283) is designed with rounded corners.

5. The medium voltage switchgear (1) according to claim 4, characterized in that: The extrusion block (26) is made of rubber material, and the extrusion block (26) will deform when being extruded.

6. The medium voltage switchgear (1) according to claim 5, characterized in that: The metal half cylinders (28) in the vertical cylinder (24) have different diameter specifications; The diameters of the vertical cylinders (24) themselves are the same, and only the diameters of the metal half cylinders (28) inside the vertical cylinders (24) connected to the shrapnel (281) are different.

7. The medium voltage switchgear (1) according to claim 6, characterized in that: Two filling blocks (261) are fixedly connected to the two side surfaces of the extrusion block (26); After the two extrusion blocks (26) are attached to each other, the filling blocks (261) located on the two extrusion blocks (26) are also attached to each other; A rubber ring (241) is fixedly connected to the side of the vertical cylinder (24) facing the component (12), and the rubber ring (241) is made of elastic insulating rubber material.

8. The medium voltage switchgear (1) according to claim 7, characterized in that: The sliding frame (21) is provided with a thread groove on one side facing the component (12); Bolts (31) are threadedly engaged in the thread grooves, and the bolts (31) are tightly pressed against the second slide rail.

9. The medium voltage switchgear (1) according to claim 8, characterized in that: The outer ring surface of the rotating drum (23) is provided with multiple groups of limiting components; Each group of the limiting components comprises two limiting rods (3), and the limiting rods (3) are rotated on the rotating drum (23) via a rotating shaft and a torsion spring; under the action of the torsion spring, the limiting rods (3) are vertically upward in an initial state.

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