A centrally mounted draw-out mechanism, switch cabinet and use method thereof

Abstract

The present invention relates to the technical field of switch cabinets, and specifically to a centrally mounted withdrawal mechanism, a switch cabinet and a method of using the same, which are arranged in a cabinet body, and include: a slide groove provided in the cabinet body, and a sliding plate slidably installed in the slide groove; an opening and closing component, which is arranged in the cabinet body and connected to the sliding plate, and a baffle is connected to the opening and closing component; a displacement locking component, which is arranged in the cabinet body, and a guide component connected to the displacement locking component is arranged on the sliding plate; a pushing and rotating component, which is arranged in the cabinet body, and a push rod is connected to the pushing and rotating component; a support column, which is fixedly installed in the cabinet body, a guide ring is fixed on the support column, a static contact is fixed on the guide ring, an elastic connection component is arranged on the support column, and a moving contact is connected to the elastic connection component. The present invention can ensure that the circuit breaker remains in a disconnected state when the trolley moves, and the position of the trolley remains fixed when the circuit breaker is closed.

Description

Technical Field

[0001] The invention relates to the technical field of switch cabinets, and in particular to a centrally mounted draw-out mechanism, a switch cabinet and a use method thereof. Background Art

[0002] The trolley switch cabinet consists of two parts: the cabinet body and the trolley. The cabinet body is divided into four independent compartments by metal partitions: busbar room, trolley room, cable room and relay instrument room. The trolley switch cabinet has three fixed operating positions, namely: operation position, maintenance position and test position. When the switch is disconnected, it can be pulled out of the switch cabinet by hand after laying the guide rail for maintenance or replacement.

[0003] In this regard, Chinese patent CN209929836U proposes an interlocking mechanism of a withdrawable switch cabinet, including a base, a linkage member, a sliding member, and a lock. The linkage member is movably connected to the base along a first direction. The sliding member is movably connected to the base along a second direction. The sliding member has a linkage hole. The linkage member is continuously provided with a first neck and a second neck along the first direction, and can be penetrated into the linkage hole through the first neck and the second neck. The linkage hole is continuously provided with a first hole section and a second hole section along the second direction. When the second neck is penetrated with the linkage hole, the second neck is confined in the second hole section, and the sliding member can prevent the lock from unlocking the key. When the first neck is penetrated with the linkage hole, the first neck can slide in the first hole section and the second hole section, and can slide in the first hole section until the sliding member avoids the lock. The mechanism has a simple structure. In addition, a withdrawable switch cabinet is also provided. However, in actual use, its operation is relatively complicated, and during the movement of the trolley, the opening and closing of the circuit breaker cannot be restricted, which may cause harm to maintenance personnel. Summary of the invention

[0004] The object of the present invention is to provide a centrally mounted draw-out mechanism, a switch cabinet and a method of using the same, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A centrally mounted drawer mechanism is arranged in a cabinet and comprises:

[0007] A slide groove is provided in the cabinet, and a sliding plate is slidably installed in the slide groove;

[0008] Also includes:

[0009] An opening and closing component is disposed in the cabinet and connected to the sliding plate, and symmetrically arranged baffles are connected to the opening and closing component. When the sliding plate moves, the opening and closing component can control the baffles to move closer to or away from each other;

[0010] A displacement locking assembly is arranged in the cabinet, and a guide assembly connected to the displacement locking assembly is arranged on the sliding plate;

[0011] A push-rotate assembly is disposed in the cabinet, and a push rod is connected to the push-rotate assembly, and the push rod can drive the displacement locking assembly to move through the push-rotate assembly, so as to adjust the movement state of the sliding plate through the guide assembly;

[0012] A support column is fixedly installed in the cabinet, a guide ring is fixed on the support column, a static contact is fixed on the guide ring, an elastic connection component is provided on the support column, a moving contact is connected to the elastic connection component, and the elastic connection component can adjust the matching state of the moving contact and the static contact when the pushing rotating component moves.

[0013] As a further solution of the present invention: the opening and closing assembly comprises a fixed sleeve fixedly installed in the cabinet and symmetrically arranged, a movable rod is slidably installed in the fixed sleeve, the movable rod is fixedly connected to the baffle, and a No. 1 spring abutting against the baffle is sleeved on the fixed sleeve and the movable rod;

[0014] It also includes a limit plate fixedly mounted on the sliding plate, and the limit plate is in abutment with the baffle.

[0015] As a further solution of the present invention: the displacement locking assembly includes a guide rod fixedly installed in the cabinet and symmetrically arranged, a guide sleeve is slidably installed on the guide rod, a connecting plate is fixed to the side wall of the guide sleeve, a card slot is opened on the connecting plate, and a supporting structure is arranged on the connecting plate.

[0016] As a further solution of the present invention: the support structure comprises a support sleeve fixedly mounted on the connecting plate, a limit column is slidably mounted in the support sleeve, and a No. 2 spring is sleeved on the support sleeve and the limit column;

[0017] It also includes a through slot provided on the side wall of the supporting sleeve, and a protrusion which is slidably connected with the through slot is fixed on the limiting column.

[0018] As a further solution of the present invention: the guide assembly includes a first transverse groove, a first straight groove, a second transverse groove, and a second straight groove formed on the sliding plate, and the limiting column can slide along the first transverse groove, the first straight groove, the second transverse groove, and the second straight groove.

[0019] As a further solution of the present invention: the pushing and rotating assembly includes a rotating sleeve rotatably installed in the cabinet body, the rotating sleeve is movably connected to the push rod, a guide groove is provided on the inner wall of the rotating sleeve, a first limit block slidingly connected to the guide groove is fixed on the push rod, a No. 3 spring abutting against the cabinet body is sleeved on the push rod, and a rotating structure connected to the rotating sleeve is provided in the cabinet body.

[0020] As a further solution of the present invention: the rotating structure includes a No. 1 bevel gear fixedly mounted on the rotating sleeve, a rotating rod is rotatably mounted in the cabinet, a No. 2 bevel gear meshing with the No. 1 bevel gear is fixed on the rotating rod, a turntable is fixed on the end of the rotating rod away from the No. 2 bevel gear, and a protruding block slidably connected to the slot is fixed on the turntable.

[0021] As a further solution of the present invention: the elastic connection assembly includes an annular groove provided on the rotating sleeve, a movable ring slidably connected to the support column is movably mounted on the rotating sleeve, and a second limit block slidably connected to the annular groove is fixed to the inner wall of the movable ring;

[0022] It also includes a receiving sleeve fixedly mounted on the movable ring, a receiving rod is slidably mounted in the receiving sleeve, the receiving rod is fixedly connected to the moving contact, and a No. 4 spring abutting against the receiving rod is fixed in the receiving sleeve.

[0023] A switch cabinet comprises the centrally mounted draw-out mechanism.

[0024] A method for using a switch cabinet comprises the following steps:

[0025] Step 1: In the initial state, the position of the sliding plate is limited by the displacement locking assembly and the guide assembly. When the vehicle needs to be inspected or tested, the push rod can be manually pushed to move, and the rotation assembly can be driven to move;

[0026] Step 2: Under the action of pushing the rotating component, the elastic connection component is driven to move, so that the moving contact and the static contact are separated, ensuring that the circuit breaker is in the open state;

[0027] Step 3: At the same time, pushing the rotating component will also drive the displacement locking component to move, and under the action of the guiding component, the sliding plate can slide freely;

[0028] Step 4: When the sliding plate moves to the test position, the push rod can be used to control the moving contact to cooperate with the static contact again, and the position of the sliding plate can be locked again under the action of the displacement locking assembly and the guide assembly.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: the present application can ensure that the displacement of the trolley remains locked during the closing process of the circuit breaker, or that the circuit breaker remains disconnected during the movement of the trolley. When the trolley is tested or repaired, in the initial state, the circuit breaker is in a closed state, and the moving contact and the static contact are in abutment. Under the action of the displacement locking mechanism and the guide component, the sliding plate is in a locked state and its position cannot be moved. At this time, the push rod can be pushed to move, driving the push-rotation mechanism to move, thereby driving the elastic connection component to move, so that the moving contact and the static contact are separated. At the same time, under the action of the push-rotation mechanism, the displacement locking mechanism is driven to move, and under the action of the guide component, the sliding plate is The plate can move freely. At this time, the sliding plate can be driven to move along the length direction of the slide groove, and under the action of the guiding component, it can be ensured that the circuit breaker cannot be closed when the sliding plate moves. When the sliding plate moves to the test position, the circuit breaker can be controlled to close. At this time, the push rod can be pushed to move again, and the elastic connection component can be driven to move by pushing the rotating mechanism, so that the moving contact is in contact with the static contact again. At the same time, pushing the rotating mechanism will also drive the displacement locking mechanism to move, and under the action of the guiding component, the sliding plate is locked again, so that when the circuit breaker is closed, the trolley will not be displaced, and when the circuit breaker is disconnected, the trolley can move freely, and during the movement of the trolley, the circuit breaker cannot be closed, thereby ensuring the safety of the maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The diagram is a structural diagram of an embodiment of a centrally mounted drawer mechanism and a switch cabinet.

[0031] Figure 2 It is a structural schematic diagram of a centrally mounted drawer mechanism and a switch cabinet in an embodiment of the cabinet being in an open state.

[0032] Figure 3 It is a schematic diagram of a half-section structure of a centrally mounted drawer mechanism and a switch cabinet in one embodiment.

[0033] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at point A in the middle.

[0034] Figure 5 The diagram is a schematic diagram of the connection relationship between the sliding plate, the opening and closing assembly, and the partial pushing and rotating assembly in one embodiment of a centrally mounted withdrawal mechanism and a switch cabinet.

[0035] Figure 6 It is a structural schematic diagram of an opening and closing assembly and a sliding plate in an embodiment of a centrally mounted draw-out mechanism and a switch cabinet.

[0036] Figure 7The present invention is a schematic diagram of the connection relationship among a sliding plate, a guide assembly, a partial displacement locking assembly, an elastic connection assembly, and a partial push-rotation assembly in one embodiment of a centrally mounted withdrawal mechanism and a switch cabinet.

[0037] Figure 8 It is a structural schematic diagram of a guide assembly and a sliding plate in an embodiment of a centrally mounted drawer mechanism and a switch cabinet.

[0038] Fig. 9 It is a schematic diagram of a partially half-section structure of an embodiment of a centrally mounted draw-out mechanism and a switch cabinet.

[0039] Fig.10 It is a schematic diagram of the exploded structure of the displacement locking assembly and the turntable in one embodiment of the centrally mounted withdrawal mechanism and the switch cabinet.

[0040] Fig.11 It is a schematic diagram of the exploded structure of the elastic connection component, the rotating sleeve and the support column in one embodiment of the centrally mounted withdrawal mechanism and the switch cabinet.

[0041] Fig.12 The figure is a schematic cross-sectional structure diagram of a rotating sleeve in an embodiment of a centrally mounted draw-out mechanism and a switch cabinet.

[0042] In the figure: 1, cabinet; 2, slide; 3, sliding plate; 301, first horizontal groove; 302, first straight groove; 303, second horizontal groove; 304, second straight groove; 4, limit plate; 5, fixed sleeve; 6, movable rod; 7, No. 1 spring; 8, baffle; 9, rotating sleeve; 901, first vertical groove; 902, first inclined groove; 903, second vertical groove; 904, second inclined groove; 10, No. 1 bevel gear; 11, No. 2 bevel gear; 12, rotating rod; 13, turntable; 14, Guide rod; 15. Guide sleeve; 16. Connecting plate; 1601. Slot; 17. Support sleeve; 1701. Through slot; 18. Limiting column; 1801. Protrusion; 19. No. 2 spring; 20. Push rod; 21. No. 3 spring; 22. First limiting block; 23. Supporting column; 24. Guide ring; 25. Stationary contact; 26. Movable ring; 27. Second limiting block; 28. Receiver sleeve; 29. ​​Receiver rod; 30. Moving contact; 31. No. 4 spring; 32. Annular groove. DETAILED DESCRIPTION

[0043] 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.

[0044] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0045] See also Figure 1 to Figure 12 In the embodiment of the present invention, a centrally mounted withdrawal mechanism is arranged in a cabinet 1, and includes: a cabinet 1, a slide groove 2, a sliding plate 3, an opening and closing component, a baffle 8, a displacement locking mechanism, a guide component, a pushing and rotating mechanism, a push rod 20, a support column 23, a guide ring 24, a static contact 25, an elastic connection component, and a moving contact 30. In order to ensure that the displacement of the trolley remains locked during the closing process of the circuit breaker, or the circuit breaker remains disconnected during the movement of the trolley, when the trolley is tested or repaired, in the initial state, the circuit breaker is in a closed state, and the moving contact 30 is in abutment with the static contact 25. Under the action of the displacement locking mechanism and the guide component, the sliding plate 3 is in a locked state and its position cannot be moved. At this time, the push rod 20 can be pushed to move, driving the pushing and rotating mechanism to move, thereby driving the elastic connection component to move, so that the moving contact 30 is separated from the static contact 25. At the same time, under the action of pushing the rotating mechanism, the displacement locking mechanism is driven to move, and under the action of the guiding component, the sliding plate 3 can be moved freely. At this time, the sliding plate 3 can be driven to move along the length direction of the slide groove 2, and under the action of the guiding component, it can be ensured that the circuit breaker cannot be closed when the sliding plate 3 moves. When the sliding plate 3 moves to the test position, the circuit breaker can be controlled to be closed. At this time, the push rod 20 can be pushed again to move, and the elastic connection component can be driven to move by pushing the rotating mechanism, so that the moving contact 30 is again in conflict with the static contact 25. At the same time, the pushing and rotating mechanism will also drive the displacement locking mechanism to move, and under the action of the guiding component, the sliding plate 3 is locked again, so that when the circuit breaker is closed, the trolley will not be displaced, and when the circuit breaker is disconnected, the trolley can move freely, and the circuit breaker cannot be closed during the movement of the trolley, thereby ensuring the safety of the maintenance personnel.

[0046] The details are as follows, including:

[0047] A slide groove 2 is provided in the cabinet 1, and a sliding plate 3 is slidably installed in the slide groove 2;

[0048] Also includes:

[0049] See also Figure 3 , Figure 5-Figure 8, an opening and closing component is arranged in the cabinet 1 and connected to the sliding plate 3, and a symmetrically arranged baffle 8 is connected to the opening and closing component. When the sliding plate 3 moves, the opening and closing component can control the baffle 8 to move closer to or away from each other. The opening and closing component includes a fixed sleeve 5 fixedly installed in the cabinet 1 and symmetrically arranged, and a movable rod 6 is slidably installed in the fixed sleeve 5. The movable rod 6 is fixedly connected to the baffle 8, and a No. 1 spring 7 that abuts against the baffle 8 is sleeved on the fixed sleeve 5 and the movable rod 6; it also includes a limit plate 4 fixedly installed on the sliding plate 3, and the limit plate 4 abuts against the baffle 8.

[0050] In detail, the limit plate 4 is arranged in a triangular column shape. When the trolley is in use, there are three positions, namely the working position, the test position, and the maintenance position. When the trolley is in the working position or the test position, the limit plate 4 abuts against the baffle 8, so that the distance between the two baffles 8 is maximized. Under the action of the baffle 8, the movable rod 6 is located at the end of the stroke in the fixed sleeve 5, and the No. 1 spring 7 is in a compressed state. Since there is a gap between the two baffles 8, the circuit breaker can be opened and closed freely. When the trolley is in the maintenance position, the fiberboard 4 is separated from the baffle 8. At this time, the No. 1 spring 7 is elastically released, causing the movable rod 6 to move away from the fixed sleeve 5, so that the two baffles 8 fit each other, thereby ensuring that the circuit breaker cannot be opened and closed.

[0051] See also Figure 3-Figure 5 , Figure 7 , Fig. 9 , Fig.10 , a displacement locking assembly is arranged in the cabinet 1, and the displacement locking assembly includes a guide rod 14 fixedly installed in the cabinet 1 and symmetrically arranged, a guide sleeve 15 is slidably installed on the guide rod 14, a connecting plate 16 is fixed to the side wall of the guide sleeve 15, a card slot 1601 is opened on the connecting plate 16, and a supporting structure is arranged on the connecting plate 16, wherein the supporting structure includes a supporting sleeve 17 fixedly installed on the connecting plate 16, a limiting column 18 is slidably installed in the supporting sleeve 17, and a No. 2 spring 19 is sleeved on the supporting sleeve 17 and the limiting column 18; it also includes a through groove 1701 opened on the side wall of the support sleeve 17, and a protrusion 1801 slidably connected to the through groove 1701 is fixed on the limiting column 18.

[0052] It should be noted that the end of the limit column 18 away from the support sleeve 17 is set in a conical shape. In the initial state, the trolley is in the working position. Under the action of the pushing and rotating mechanism, the connecting plate 16 is located at the end of the stroke on the side of the guide rod 14. The second spring 19 is in a compressed state, so that the limit column 18 is located at the end of the stroke away from the support sleeve 17. Under the action of the limit column 18 and the guide assembly, the position of the sliding plate 3 is locked to ensure that the position of the trolley will not change during the closing process of the circuit breaker. If the trolley needs to be moved to the test position, the connecting plate 16 with the slot 1601 is moved under the action of the pushing and rotating mechanism, thereby driving the guide sleeve 15 along the guide When the connecting plate 16 moves in the length direction of the rod 14, the guide sleeve 15 and the guide rod 14 have a guiding function to ensure that the connecting plate 16 will not deviate when moving. The connecting plate 16 will also drive the support sleeve 17 to move, thereby controlling the limiting column 18 to slide in the guide assembly. When the connecting plate 16 moves to the end of the stroke on the other side of the guide rod 14, the limiting column 18 and the guide assembly no longer lock the sliding plate 3, and the sliding plate 3 can move freely along the length direction of the slide groove 2. When the trolley moves to the test position, the movement of the connecting plate 16 can be controlled again by pushing the rotating mechanism, so that the limiting column 18 returns to the initial position, and under the action of the guide assembly and the limiting column 18, the position of the sliding plate 3 is locked again.

[0053] See also Figure 7 , Figure 8 The sliding plate 3 is provided with a guiding assembly connected with the displacement locking assembly, and the guiding assembly includes a first transverse groove 301, a first straight groove 302, a second transverse groove 303, and a second straight groove 304 provided on the sliding plate 3, and the limiting column 18 can slide along the first transverse groove 301, the first straight groove 302, the second transverse groove 303, and the second straight groove 304.

[0054] Specifically, the first straight groove 302 and the second straight groove 304 are arranged parallel to the slide groove 2, and the first transverse groove 301 and the second transverse groove 303 are arranged perpendicular to the slide groove 2. In the initial state, the limit post 18 is located at the end of the travel of the first transverse groove 301 away from the first straight groove 302. Under the action of the limit post 18 and the first transverse groove 301, the position of the sliding plate 3 is locked. When the position of the trolley needs to be adjusted, at this time, under the action of the push-rotation mechanism, the connecting plate 16 moves, thereby driving the limit post 18 to move along the first transverse groove 301. When the connecting plate 16 moves to the end of the stroke, the limit column 18 just moves to the connection position of the first transverse groove 301 and the first straight groove 302. At this time, the limit column 18 no longer locks the position of the sliding plate 3, and the trolley can be controlled to slide along the length direction of the slide groove 2 through the sliding plate 3. When the sliding plate 3 moves, the limit column 18 will enter the first straight groove 302, so that the position of the connecting plate 16 will not change, ensuring that the circuit breaker cannot be opened and closed during the movement of the trolley.

[0055] Preferably, when the limit column 18 moves to the connection position between the first straight groove 302 and the second transverse groove 303, due to the different depths of the second straight groove 304 and the first straight groove 302, the limit column 18 is subjected to resistance under the action of the second straight groove 304. Therefore, it can be judged that the trolley moves to the test position. At this time, the connecting plate 16 can move freely. If it is necessary to close the circuit breaker again, under the action of the pushing and rotating mechanism, the connecting plate 16 is controlled to move so that the limit column 18 enters the second transverse groove 303, thereby ensuring that when the circuit breaker is closed, the position of the sliding plate 3 is locked again by the limit column 18 and the second transverse groove 303.

[0056] See also Figure 1-Figure 3 , Figure 5 , Figure 7 , Figure 9-12, a pushing and rotating assembly is arranged in the cabinet 1, a push rod 20 is connected to the pushing and rotating assembly, and the push rod 20 can drive the displacement locking assembly to move through the pushing and rotating assembly to adjust the movement state of the sliding plate 3 through the guide assembly, and the pushing and rotating assembly includes a rotating sleeve 9 rotatably installed in the cabinet 1, the rotating sleeve 9 is movably connected to the push rod 20, and a guide groove is opened on the inner wall of the rotating sleeve 9, and a first limit block 22 slidably connected to the guide groove is fixed on the push rod 20, and the push rod A No. 3 spring 21 is sleeved on 20 and abuts against the cabinet 1. A rotating structure connected to the rotating sleeve 9 is arranged in the cabinet 1, wherein the rotating structure includes a No. 1 bevel gear 10 fixedly mounted on the rotating sleeve 9, a rotating rod 12 is rotatably mounted in the cabinet 1, a No. 2 bevel gear 11 meshing with the No. 1 bevel gear 10 is fixed on the rotating rod 12, a turntable 13 is fixed on the end of the rotating rod 12 facing away from the No. 2 bevel gear 11, and a protruding block slidably connected to the slot 1601 is fixed on the turntable 13.

[0057] Furthermore, the guide groove can be divided into multiple sections, namely a first vertical groove 901, a first inclined groove 902, a second vertical groove 903, and a second inclined groove 904. Both ends of the first inclined groove 902 are connected to one end of the first vertical groove 901 and the second vertical groove 903, and both ends of the second inclined groove 904 are connected to the other ends of the first vertical groove 901 and the second vertical groove 903. In the initial state, the third spring 21 is in a compressed state, so that the push rod 20 is located at the end of the stroke away from the cabinet 1, and the first limit block 22 is located between the first vertical groove 901 and the second inclined groove. When the trolley is in the on position of slot 904, the trolley is in the working state and the circuit breaker is in the closed state. When the trolley position needs to be adjusted, the push rod 20 can be manually pushed to move toward the cabinet 1 and the No. 3 spring 21 can be compressed. At the same time, the push rod 20 will also drive the first limit block 22 to move, so that the first limit block 22 moves along the length direction of the first vertical slot 901. When the first limit block 22 is separated from the first vertical slot 901 and enters the first inclined slot 902, the rotating sleeve 9 will rotate, thereby driving the No. 1 bevel gear 10 to rotate, so that The second bevel gear 11 rotates synchronously, and the second bevel gear 11 also drives the turntable 13 to rotate through the rotating rod 12, so as to control the movement of the connecting plate 16 through the protruding block and the slot 1601. When the push rod 20 is pushed to the end of the stroke, the first limit block 22 moves to the connection position of the first inclined slot 902 and the second vertical slot 903. At this time, the rotating sleeve 9 rotates a quarter of a turn, so that the turntable 13 also rotates a quarter of a turn. At this time, the force applied to the push rod 20 is removed, and the third spring 21 is elastically released, so that the push rod 20 moves to the initial position During the movement, the push rod 20 will also drive the first limit block 22 to slide along the length direction of the second vertical groove 903 until the first limit block 22 moves into the second inclined groove 904. The rotating sleeve 9 continues to rotate until the first limit block 22 moves to the connection position of the second inclined groove 904 and the first vertical groove 901. At this time, the rotating sleeve 9 and the turntable 13 just rotate half a circle, so that the connecting plate 16 moves to the end of the stroke, and the limit column 18 will move to the connection position of the first transverse groove 301 and the first straight groove 302. At this time, the sliding plate 3 can move freely.

[0058] Preferably, during the movement of the trolley, the limit column 18 will slide in the first straight slot 302, so that the position of the connecting plate 16 cannot move, to ensure that the turntable 13 remains in a fixed state, thereby achieving the circuit breaker cannot be opened or closed during the movement of the trolley.

[0059] See also Figure 3 , Figure 5 , Figure 7 , Fig. 9 , Fig.11, a support column 23 is fixedly installed in the cabinet 1, a guide ring 24 is fixed on the support column 23, a static contact 25 is fixed on the guide ring 24, an elastic connection component is arranged on the support column 23, a moving contact 30 is connected to the elastic connection component, and the elastic connection component can adjust the matching state of the moving contact 30 and the static contact 25 when the pushing and rotating component moves, the elastic connection component includes an annular groove 32 provided on the rotating sleeve 9, a movable ring 26 slidably connected to the support column 23 is movably installed on the rotating sleeve 9, and a second limit block 27 slidably connected to the annular groove 32 is fixed on the inner wall of the movable ring 26; it also includes a receiving sleeve 28 fixedly installed on the movable ring 26, a receiving rod 29 is slidably installed in the receiving sleeve 28, the receiving rod 29 is fixedly connected to the moving contact 30, and a No. 4 spring 31 abutting against the receiving rod 29 is fixed in the receiving sleeve 28.

[0060] To elaborate, the annular groove 32 is composed of two spiral grooves arranged symmetrically with each other. In the initial state, the trolley is in the working position, the second limit block 27 is located at the end of the stroke away from the push rod 20, so that the movable ring 26 is located at the end of the stroke toward the guide ring 24, and the fourth spring 31 is in a compressed state, so that the receiving rod 29 is located at the end of the stroke away from the receiving sleeve 28, so that the moving contact 30 and the static contact 25 are in a connected state. When the position of the trolley needs to be adjusted, at this time, under the action of the push rod 20, the rotating sleeve 9 is rotated, thereby driving the annular groove 32 to move. Under the action of the annular groove 32, the movable ring 26 fixed with the second limit block 27 is driven to move, so that the movable ring 26 moves along the length direction of the support column 23, and the movable ring 26 and the support column 2 3 has a guiding function to ensure that the movable ring 26 will not deflect during movement. The movable ring 26 will also drive the receiving sleeve 28 to move, so that the No. 4 spring 31 is elastically released, so that the position of the receiving rod 29 will not change, and the moving contact 30 is always in a connected state with the static contact 25. When the rotating sleeve 9 rotates half a circle, the push rod 20 moves toward the initial position, and when the first limit block 22 moves to the second inclined groove 904, the rotating sleeve 9 continues to rotate, thereby controlling the movable ring 26 to continue to move through the annular groove 32 and the second limit block 27 until the No. 4 spring 31 is in a normal state. When the first limit block 22 moves to the connection position of the second inclined groove 904 and the first vertical groove 901, the receiving rod 29 will move, thereby controlling the moving contact 30 to separate from the static contact 25.

[0061] Preferably, if the circuit breaker needs to be closed, the push rod 20 is used to control the rotating sleeve 9 to rotate again, so that the moving contact 30 is controlled to abut against the static contact 25 again through the annular groove 32 and the second limit block 27.

[0062] Among them, when the trolley needs to be moved from the test position to the maintenance position, since the limit column 18 is at the connection position between the first straight groove 302 and the second transverse groove 303 at this time, while continuing to control the movement of the trolley, the sliding plate 3 moves along the length direction of the sliding groove 2, and the limit column 18 will give way, so that the limit column 18 moves toward the supporting sleeve 17, so that the No. 2 spring 19 is compressed, and the limit column 18 will enter the second straight groove 304, and in the process again, the sliding plate 3 will drive the limit plate 4 to move to a position separated from the baffle 8, the No. 1 spring 7 is elastically released, and drives the movable rod 6 to move in the direction away from the fixed sleeve 5, so that the two baffles 8 fit each other. Therefore, when the trolley moves to the maintenance position, under the action of the baffle 8, the push rod 20 will not move, thereby ensuring that the circuit breaker cannot be closed when the trolley is separated from the cabinet 1.

[0063] A switch cabinet comprises the centrally mounted draw-out mechanism.

[0064] A method for using a switch cabinet comprises the following steps:

[0065] Step 1: In the initial state, the position of the sliding plate 3 is limited by the displacement locking assembly and the guide assembly. When the vehicle needs to be inspected or tested, the push rod 20 can be manually pushed to move, and the rotation assembly can be driven to move;

[0066] Step 2: Under the action of pushing the rotating component, the elastic connection component is driven to move, so that the moving contact 30 is separated from the static contact 25, ensuring that the circuit breaker is in the open state;

[0067] Step 3: At the same time, pushing the rotating component will also drive the displacement locking component to move, and under the action of the guiding component, the sliding plate 3 can slide freely;

[0068] Step 4: When the sliding plate 3 moves to the test position, the push rod 20 can be used to control the moving contact 30 to cooperate with the static contact 25 again, and the position of the sliding plate 3 can be locked again under the action of the displacement locking assembly and the guide assembly.

[0069] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and range of equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0070] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A centrally mounted drawer mechanism, arranged in a cabinet (1), comprising: A slide groove (2) provided in the cabinet (1), and a sliding plate (3) slidably mounted in the slide groove (2); It is characterized by further comprising: A displacement locking assembly is arranged in the cabinet (1), and a guide assembly connected to the displacement locking assembly is arranged on the sliding plate (3); A push-rotate assembly is arranged in the cabinet (1), a push rod (20) is connected to the push-rotate assembly, and the push rod (20) can drive the displacement locking assembly to move through the push-rotate assembly, so as to adjust the movement state of the sliding plate (3) through the guide assembly; A support column (23) is fixedly mounted in the cabinet (1); a guide ring (24) is fixed on the support column (23); a static contact (25) is fixed on the guide ring (24); an elastic connection component is provided on the support column (23); a moving contact (30) is connected to the elastic connection component; the elastic connection component can adjust the matching state of the moving contact (30) and the static contact (25) when the push-rotating component moves; The displacement locking assembly comprises a guide rod (14) fixedly mounted in the cabinet (1) and arranged symmetrically, a guide sleeve (15) being slidably mounted on the guide rod (14), a connecting plate (16) being fixed to a side wall of the guide sleeve (15), and a supporting structure being arranged on the connecting plate (16); The support structure comprises a support sleeve (17) fixedly mounted on the connecting plate (16), and a limiting column (18) is slidably mounted in the support sleeve (17); The guide assembly comprises a first transverse groove (301), a first straight groove (302), a second transverse groove (303), and a second straight groove (304) which are formed on the sliding plate (3); The first straight groove (302) and the second straight groove (304) are arranged parallel to the slide groove (2), and the first transverse groove (301) and the second transverse groove (303) are arranged perpendicular to the slide groove (2); when the limiting column (18) is located at the end of the stroke of the first transverse groove (301) away from the first straight groove (302), the position of the sliding plate (3) is locked, and the connecting plate (16) is moved under the action of the pushing rotation mechanism; when the connecting plate (16) moves to the end of the stroke, the limiting column (18) just moves to the connection position of the first transverse groove (301) and the first straight groove (302), and when the sliding plate (3) moves, the limiting column (18) will enter the first straight groove (302), so that the position of the connecting plate (16) will not change, ensuring that the circuit breaker cannot be opened or closed during the movement of the trolley.

2. A centrally mounted extraction mechanism according to claim 1, characterized in that: The pushing and rotating assembly comprises a rotating sleeve (9) rotatably mounted in the cabinet (1); the rotating sleeve (9) is movably connected to the push rod (20); a guide groove is provided on the inner wall of the rotating sleeve (9); a first limit block (22) slidably connected to the guide groove is fixed on the push rod (20); a third spring (21) abutting against the cabinet (1) is sleeved on the push rod (20); a slot (1601) is provided on the connecting plate (16); and a rotating structure connected to the rotating sleeve (9) and the slot (1601) is provided in the cabinet (1).

3. A centrally mounted extraction mechanism according to claim 2, characterized in that: The rotating structure comprises a first bevel gear (10) fixedly mounted on the rotating sleeve (9); a rotating rod (12) is rotatably mounted in the cabinet (1); a second bevel gear (11) meshing with the first bevel gear (10) is fixed on the rotating rod (12); a rotating disk (13) is fixed on one end of the rotating rod (12) facing away from the second bevel gear (11); and a protruding block slidably connected to the clamping groove (1601) is fixed on the rotating disk (13).

4. A centrally mounted extraction mechanism according to claim 2, characterized in that: The elastic connection assembly comprises an annular groove (32) formed on the rotating sleeve (9), a movable ring (26) slidably connected to the support column (23) being movably mounted on the rotating sleeve (9), and a second limit block (27) slidably connected to the annular groove (32) being fixed to the inner wall of the movable ring (26); It also includes a receiving sleeve (28) fixedly mounted on the movable ring (26), a receiving rod (29) slidably mounted in the receiving sleeve (28), the receiving rod (29) being fixedly connected to the moving contact (30), and a No. 4 spring (31) abutting against the receiving rod (29) being fixed in the receiving sleeve (28).

5. A switch cabinet, characterized in that: It comprises a centrally mounted extraction mechanism as described in any one of claims 1 to 4.

6. A method for using a switch cabinet, using the switch cabinet according to claim 5, characterized in that: The following steps are involved: Step 1: In the initial state, the position of the sliding plate (3) is limited under the action of the displacement locking assembly and the guide assembly. When the vehicle needs to be inspected or tested, the push rod (20) can be manually pushed to move, thereby driving the rotation assembly to move; Step 2: Under the action of pushing the rotating component, the elastic connection component is driven to move, so that the moving contact (30) is separated from the static contact (25), ensuring that the circuit breaker is in an open state; Step 3: At the same time, pushing the rotating component will also drive the displacement locking component to move, and under the action of the guiding component, the sliding plate (3) can slide freely; Step 4: When the sliding plate (3) moves to the test position, the push rod (20) can be used to control the moving contact (30) to cooperate with the stationary contact (25) again, and the position of the sliding plate (3) can be locked again under the action of the displacement locking assembly and the guide assembly.

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