A high-voltage handcart-type switch cabinet and its tripping method

Abstract

The present invention relates to the technical field of switch cabinets, and specifically relates to a high-voltage trolley-type switch cabinet and its breaking method, including: a cabinet body, and a chute opened in the cabinet body, a trolley is slidably installed in the chute, and a fixing plate is arranged in the cabinet body; a displacement locking mechanism, which is arranged on the fixing plate and connected to the trolley, and is used to adjust the locking state of the trolley; a controller, which is installed in the cabinet body, a connection-breaking control mechanism connected to the controller is arranged on the fixing plate, a follow-up rotation mechanism is arranged on the displacement locking mechanism, and the follow-up rotation mechanism can, when the displacement locking mechanism moves, adjust the switch state of the controller through the connection-breaking control mechanism; a trigger reset mechanism, which is arranged on the displacement locking mechanism and connected to the follow-up rotation mechanism. This application can automatically control the switch of the circuit breaker according to the position of the trolley to ensure that the switch cabinet always maintains a safe state during use.

Description

Technical Field

[0001] The present invention relates to the technical field of switch cabinets, and particularly to a high-voltage trolley-type switch cabinet and its disconnection method. Background Art

[0002] The trolley-type switch cabinet consists of a fixed cabinet body and a removable trolley. This design enables the trolley part to have good interchangeability. The trolley track can be located on the ground or in the middle of the switch cabinet, and the specific position depends on the design.

[0003] The trolley-type switch cabinet relies on the trolley to insert and remove electrical components such as disconnect switches and circuit breakers into and out of fixed positions to achieve the switching, distribution, protection, and control of the circuit in different states. When the trolley is inserted into the corresponding position, the transmission mechanism of the mechanical part will automatically start to easily insert or remove the electrical components. When the trolley is in motion, the transmission mechanism of the mechanical part will automatically disconnect the power system to achieve the separation and isolation of the electrical components.

[0004] The use of the trolley is to control the locking of the trolley and the opening and closing of the circuit breaker through an interlocking method. However, when the existing trolley is under maintenance, it is necessary to first disconnect the circuit breaker and then use other tools to unlock the trolley. The opening and closing of the circuit breaker and the locking of the trolley are basically not related, which may lead to the risk of the circuit breaker being closed when the trolley is not in the test position or the working position. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-voltage trolley-type switch cabinet and its disconnection method to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A high-voltage trolley-type switch cabinet, comprising:

[0008] A cabinet body, and a chute opened in the cabinet body. A trolley is slidably installed in the chute, and a fixing plate is arranged in the cabinet body;

[0009] Further comprising:

[0010] A displacement locking mechanism, arranged on the fixing plate and connected to the trolley, for adjusting the locking state of the trolley;

[0011] A controller, installed in the cabinet body. An on-off control mechanism connected to the controller is arranged on the fixing plate. A follow-up rotation mechanism is arranged on the displacement locking mechanism. The follow-up rotation mechanism can adjust the switch state of the controller through the on-off control mechanism when the displacement locking mechanism moves;

[0012] A trigger reset mechanism is provided on the displacement locking mechanism and connected to the follow-up rotating mechanism. The trigger reset mechanism can be activated when the displacement locking mechanism locks the trolley to control the reset of the connection and disconnection regulating mechanism through the follow-up rotating mechanism.

[0013] As a further solution of the present invention: the displacement locking mechanism includes a screw rod rotatably mounted on the fixed plate, a hand wheel is provided at the end of the screw rod, and a first threaded sleeve that cooperates with the screw rod thread is movably mounted on the screw rod;

[0014] It also includes a rotating rod rotatably mounted on the fixed plate, a first guide sleeve slidably mounted on the rotating rod, the first guide sleeve is connected to the first threaded sleeve, and the first threaded sleeve is provided with a guide assembly connected to the trolley.

[0015] As a further solution of the present invention: the guide assembly includes a support plate installed on the side wall of the first threaded sleeve, a guide groove is provided on the support plate, a limiting column is slidably installed in the guide groove, and a guide groove is provided on the bottom of the trolley to be slidably connected to the limiting column.

[0016] As a further solution of the present invention: the connection and disconnection control mechanism includes a support rod installed on the fixed plate, a sliding sleeve is slidably installed on the support rod, a moving contact is provided on the side wall of the sliding sleeve, a static contact cooperating with the moving contact is provided at the end of the support rod, and a driven component connected to the sliding sleeve is provided on the rotating rod.

[0017] As a further solution of the present invention: the driven assembly includes a rotating ring installed at the end of the rotating rod, a third spiral groove is provided on the outer wall of the rotating ring, and a protruding column is provided on the side wall of the sliding sleeve in sliding connection with the third spiral groove.

[0018] As a further solution of the present invention: the follow-up rotation mechanism includes a second threaded sleeve movably mounted on the screw and threadably engaged with the screw, and a second guide sleeve connected to the second threaded sleeve is slidably mounted on the rotating rod;

[0019] It also includes a second vertical groove and an annular groove opened on the rotating rod, a push ring that is slidably installed on the rotating rod and cooperates with the second guide sleeve, a second limit block that is slidably connected to the second vertical groove and the annular groove is provided on the inner wall of the push ring, and an elastic component connected to the push ring is provided on the rotating rod.

[0020] As a further solution of the present invention: The elastic component includes a second spiral groove formed on the rotating rod. An activity plate that is slidably mounted on the rotating rod and slidably connected to the lead screw is provided. A third limiting block that is slidably connected to the second spiral groove is arranged on the inner wall of the activity plate.

[0021] It further includes a second spring and a third spring sleeved on the rotating rod. Two ends of the second spring respectively abut against the activity plate and the pushing ring, and the third spring abuts against the activity plate.

[0022] As a further solution of the present invention: The trigger reset mechanism includes a guiding column slidably mounted on the first guiding sleeve. The guiding column is slidably connected to the pushing ring. A first activity ring sleeved on the rotating rod is mounted on the guiding column. A limiting component connected to the guiding column is arranged on the rotating rod.

[0023] As a further solution of the present invention: The limiting component includes a first vertical groove and a first spiral groove formed on the rotating rod. A second activity ring sleeved on the rotating rod is mounted on the guiding column. A first limiting block that is slidably connected to the first vertical groove and the first spiral groove is arranged on the inner wall of the second activity ring.

[0024] It further includes a first spring sleeved on the rotating rod. Two ends of the first spring respectively abut against the first guiding sleeve and the second activity ring.

[0025] A breaking method for a high-voltage handcart type switch cabinet includes the following steps:

[0026] Step 1: In the initial state, the position of the handcart is locked under the action of the displacement locking mechanism.

[0027] Step 2: When the position of the handcart needs to be adjusted, under the action of the displacement locking mechanism, the follow-up rotation mechanism and the trigger reset mechanism are controlled to move, and the controller is controlled to disconnect through the connection-breaking regulation mechanism, so that the circuit breaker is in the disconnected state.

[0028] Step 3: At this time, the position of the handcart can be adjusted. When the handcart moves to the test position, under the action of the displacement locking mechanism, the follow-up rotation mechanism is controlled to reset through the trigger reset mechanism, so as to drive the controller to be connected again through the connection-breaking regulation mechanism.

[0029] Step 4: The displacement locking mechanism can lock the position of the handcart again to ensure that the position of the handcart will not change when the circuit breaker is connected.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: When the circuit breaker on the handcart is in the closed state, the handcart cannot move through an interlocking method; when the circuit breaker is in the open state, the handcart can move, and the circuit breaker cannot be closed, so as to ensure the normal use of the switch cabinet. When the circuit breaker is in the closed state, under the action of the displacement locking mechanism, it is ensured that the handcart will not move. When it is necessary to repair or test the handcart, the displacement locking mechanism is controlled to move, and under the action of the follow-up rotation mechanism and the connection-breaking control mechanism, the controller is in the open state to trip the circuit breaker. At this time, the displacement locking mechanism no longer locks the handcart, and the handcart can move freely. During the movement of the handcart, the connection-breaking control mechanism is locked in the reverse direction by the displacement locking mechanism to ensure that the circuit breaker will not be closed when the handcart moves, thus ensuring the correct operation of the switch cabinet and the personal safety of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 FIG. is a schematic structural diagram of an embodiment of a high-voltage handcart type switch cabinet.

[0032] Figure 2 FIG. is a schematic structural diagram of the interior of the cabinet in an embodiment of a high-voltage handcart type switch cabinet.

[0033] Figure 3 is Figure 2 an enlarged schematic structural diagram of part A in FIG.

[0034] Figure 4 FIG. is a schematic connection diagram of the handcart, part of the connection-breaking control mechanism, and part of the follow-up rotation structure in an embodiment of a high-voltage handcart type switch cabinet.

[0035] Figure 5 is Figure 4 a schematic structural diagram of another angle in FIG.

[0036] Figure 6 FIG. is a schematic structural diagram of the handcart and the guide groove in an embodiment of a high-voltage handcart type switch cabinet.

[0037] Figure 7 FIG. is a schematic connection diagram of part of the displacement locking mechanism, part of the connection-breaking control mechanism, part of the trigger reset mechanism, part of the follow-up rotation mechanism, and the controller in an embodiment of a high-voltage handcart type switch cabinet.

[0038] Figure 8 FIG. is a schematic connection diagram of part of the displacement locking mechanism, part of the connection-breaking control mechanism, part of the trigger reset mechanism, and part of the follow-up rotation mechanism in an embodiment of a high-voltage handcart type switch cabinet.

[0039] Figure 9Schematic structural diagrams of a partial connection-disconnection control mechanism, a partial triggering and resetting mechanism, and a partial follower rotation mechanism in an embodiment of a high-voltage handcart-type switch cabinet.

[0040] Figure 10 Exploded structural diagrams of a rotating rod and a triggering and resetting mechanism in an embodiment of a high-voltage handcart-type switch cabinet.

[0041] Figure 11 Partial half-sectional structural diagram in an embodiment of a high-voltage handcart-type switch cabinet.

[0042] Figure 12 Exploded structural diagrams of a rotating rod and a follower rotation mechanism in an embodiment of a high-voltage handcart-type switch cabinet.

[0043] Figure 13 Schematic structural diagram of a partial connection-disconnection control mechanism in an embodiment of a high-voltage handcart-type switch cabinet.

[0044] In the figure: 1, cabinet body; 101, chute; 2, handcart; 201, first straight groove; 202, first transverse groove; 203, second transverse groove; 204, second straight groove; 205, third transverse groove; 3, fixing plate; 4, handwheel; 5, lead screw; 6, first threaded sleeve; 7, support plate; 8, guiding groove; 9, limiting column; 10, rotating rod; 1001, first vertical groove; 1002, first helical groove; 1003, second vertical groove; 1004, annular groove; 1005, second helical groove; 11, first guiding sleeve; 12, first movable ring; 13, guiding column; 14, second movable ring; 15, first limiting block; 16, first spring; 17, second threaded sleeve; 18, second guiding sleeve; 19, pushing ring; 20, second limiting block; 21, second spring; 22, movable plate; 23, third limiting block; 24, third spring; 25, rotating ring; 2501, third helical groove; 26, support rod; 27, sliding sleeve; 28, protruding column; 29, moving contact; 30, static contact; 31, controller. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] In addition, an element in the present invention is referred to as "fixed to" or "arranged on" another element, and it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0047] Please refer to Figures 1 to 13 , in an embodiment of the present invention, a high-voltage handcart type switch cabinet includes: a cabinet body 1, a chute 101, a handcart 2, a fixing plate 3, a displacement locking mechanism, a controller 31, a connection and disconnection control mechanism, a follow-up rotation mechanism, and a trigger reset mechanism. In order to ensure the normal use of the switch cabinet, it is necessary to control the circuit breaker on the handcart 2 in an interlocked manner so that when the circuit breaker is in the closed state, the handcart 2 cannot move, and when the circuit breaker is in the open state, the handcart 2 can move and the circuit breaker cannot be closed. When the circuit breaker is in the closed state, under the action of the displacement locking mechanism, it is ensured that the handcart will not move. When it is necessary to repair or test the handcart, control the displacement locking mechanism to move, and under the action of the follow-up rotation mechanism and the connection and disconnection control mechanism, make the controller 31 in the off state to trip the circuit breaker. At this time, the displacement locking mechanism no longer locks the handcart 2, and the handcart can move freely. During the movement of the handcart, the connection and disconnection control mechanism is locked in the reverse direction by the displacement locking mechanism to ensure that the circuit breaker will not be closed when the handcart moves, thereby ensuring the correct operation of the switch cabinet and the personal safety of the operator.

[0048] Specifically, it includes:

[0049] The cabinet body 1, and a chute 101 opened in the cabinet body 1, a handcart 2 is slidably installed in the chute 101, and a fixing plate 3 is arranged in the cabinet body 1;

[0050] It further includes:

[0051] Please refer to Figure 1 , Figure 2 , Figures 4 to 8, a displacement locking mechanism is provided on the fixed plate 3 and connected to the handcart 2 for adjusting the locking state of the handcart 2. The displacement locking mechanism includes a lead screw 5 rotatably mounted on the fixed plate 3. A handwheel 4 is provided at the end of the lead screw 5. A first threaded sleeve 6 that is threadedly engaged with the lead screw 5 is movably mounted on the lead screw 5. It further includes a rotating rod 10 rotatably mounted on the fixed plate 3. A first guiding sleeve 11 is slidably mounted on the rotating rod 10. The first guiding sleeve 11 is connected to the first threaded sleeve 6. A guiding component connected to the handcart 2 is provided on the first threaded sleeve 6. Among them, the guiding component includes a support plate 7 mounted on the side wall of the first threaded sleeve 6. A guiding groove 8 is formed on the support plate 7. A limiting post 9 is slidably mounted in the guiding groove 8. A guiding groove slidably connected to the limiting post 9 is formed at the bottom of the handcart 2.

[0052] Specifically, the structures at the bottom of the handcart 2 are symmetrically arranged. Therefore, two handwheels 4 are provided. One handwheel 4 is used to control the opening and closing of the circuit breaker, and the other handwheel 4 is used to control the opening and closing of the earthing switch. The guiding groove is also divided into two parts. The first part includes a first straight groove 201, a first transverse groove 202, and a second transverse groove 203. This part is located at the position of the handwheel 4 for controlling the circuit breaker switch. The other part includes a second straight groove 204 and a third transverse groove 205. This part is located at the position of the handwheel 4 for controlling the earthing switch. When the handcart 2 is in use, it is divided into a working position, a test position, and a maintenance position. Initially, the handcart 2 is in the working position. At this time, the circuit breaker is in the on state and the earthing switch is in the off state. To ensure the normal use of the switchgear, the position of the handcart 2 needs to be locked. At this time, one of the limiting posts 9 in the same group as the handwheel 4 for controlling the circuit breaker is located at the position of the first transverse groove 202 far from the first straight groove 201, so that the support plate 7 and the guiding groove 8 are at the end of the stroke in the direction towards the handwheel 4. Under the action of the limiting post 9 and the first transverse groove 202, the handcart 2 is locked to ensure that the handcart 2 will not slide along the sliding groove 101. The other limiting post 9 in the same group as the handwheel 4 for controlling the earthing switch is located at one end of the second straight groove 204 far from the third transverse groove 205. Under the action of the limiting post 9 and the second straight groove 204, the movement of the support plate 7 and the guiding groove 8 is restricted to ensure that the handwheel 4 cannot rotate, thereby ensuring that the earthing switch is always in the off state.

[0053] Preferably, when it is necessary to control the movement of the trolley 2 to the test position, the circuit breaker needs to be disconnected. Therefore, the handwheel 4 that controls the opening and closing of the circuit breaker can be driven to rotate, driving the lead screw 5 to rotate, thereby driving the movement of the first threaded sleeve 6. The first threaded sleeve 6 will also drive the first guide sleeve 11 to move along the length direction of the rotating rod 10. The rotating rod 10 and the first guide sleeve 11 have a guiding effect to ensure that the first threaded sleeve 6 does not rotate along with the lead screw 5 during movement. The first threaded sleeve 6 will also drive the support plate 7 to move, and under the action of the guiding groove 8, control the limiting column 9 to move along the length direction of the guiding groove 8 and along the length direction of the first horizontal groove 202 until the limiting column 9 moves to the position where the first horizontal groove 202 is connected to the first straight groove 201. At this time, the trolley 2 can slide along the sliding groove 101. At this time, the trolley 2 can be moved to the test position. When the trolley 2 moves to the test position, the circuit breaker or the earthing switch can be connected again. At this time, the handwheel 4 can be controlled to rotate, and the two limiting columns 9 can be controlled to enter the second horizontal groove 203 and the third horizontal groove 205 respectively to achieve the purpose of connecting the circuit breaker or the earthing switch.

[0054] Among them, the first horizontal groove 202 and the second horizontal groove 203 are respectively adapted to the working position and the test position of the trolley 2. By simply adjusting the position of the limiting column 9 in the guiding groove, the effect of automatically locking the position of the trolley 2 or the handwheel 4 according to the state of the trolley 2 can be achieved, so as to achieve the effect of quickly switching the locking state of the trolley 2 and the handwheel 4 according to the operator's needs. At the same time, during the process of adjusting the position of the limiting column 9, if the trolley 2 is in the working position, the limiting column 9 is located at the end of the first horizontal groove 202 and can only move towards the direction of the first straight groove 201. If the trolley 2 moves from the working position to the test position, the limiting column 9 is located in the first straight groove 201 and can only move towards the direction of the second horizontal groove 203. Therefore, when the operator adjusts the circuit breaker switch, he only needs to rotate in the direction in which the handwheel 4 can rotate to achieve the effect of facilitating the operator's use.

[0055] Please refer to Figure 2 、 Figure 4 、 Figure 5 、 Figures 7 to 9 、 Figures 11 to 13, a controller 31 is installed inside the cabinet body 1. A connection-breaking and regulating mechanism connected to the controller 31 is provided on the fixing plate 3. The connection-breaking and regulating mechanism includes a support rod 26 installed on the fixing plate 3. A sliding sleeve 27 is slidably installed on the support rod 26. A moving contact 29 is provided on the side wall of the sliding sleeve 27. A static contact 30 cooperating with the moving contact 29 is provided at the end of the support rod 26. A driven assembly connected to the sliding sleeve 27 is provided on the rotating rod 10. Among them, the driven assembly includes a rotating ring 25 installed at the end of the rotating rod 10. A third spiral groove 2501 is formed on the outer wall of the rotating ring 25. A protruding column 28 slidably connected to the third spiral groove 2501 is provided on the side wall of the sliding sleeve 27.

[0056] It should be noted that the controller 31 is used to control the opening and closing of the circuit breaker and the earthing switch, and the contact states of the two groups of moving contacts 29 and the two groups of static contacts 30 control the corresponding switches of the controller 31. In the initial state, the trolley 2 is in the working state. Since one of the limit posts 9 cooperating with the earthing switch is located in the second straight groove 204, the earthing switch is in the off state. When adjusting the position of the trolley 2, this part always maintains the original state. Therefore, described in terms of the structure for controlling the circuit breaker, under the action of the third spiral groove 2501 and the protruding column 28, the sliding sleeve 27 is located at the end of the stroke in the direction away from the fixing plate 3, so that the moving contact 29 is in contact with the static contact 30, thereby controlling the circuit breaker to be in the on state through the controller 31. When it is necessary to adjust the position of the trolley 2 to the test position, at this time, the handwheel 4 can be driven to rotate, and the lead screw 5 will be driven to rotate. The lead screw 5 will control the rotating rod 10 to rotate through the follower rotation mechanism, thereby driving the rotating ring 25 to rotate, causing the third spiral groove 2501 to move. At this time, the protruding column 28 will slide along the track of the third spiral groove 2501, causing the sliding sleeve 27 to move along the length direction of the support rod 26 and move in the direction away from the static contact 30 to control the separation of the moving contact 29 from the static contact 30. At this time, the circuit breaker is disconnected.

[0057] Preferably, through the mutual cooperation of the movement of the limit post 9 and the rotation of the rotating rod 10, it is realized that when the circuit breaker is on, the trolley 2 is in the locked state and cannot move. When the circuit breaker is off, the trolley 2 can move freely along the chute 101, and during the movement of the trolley 2, the rotation of the rotating rod 10 is restricted to ensure that the circuit breaker will not be on.

[0058] Please refer to Figures 2 to 5 、 Figures 7 to 9 、 Figure 11 、 Figure 12, a follow-up rotation mechanism is provided on the displacement locking mechanism. When the displacement locking mechanism moves, the follow-up rotation mechanism can adjust the switch state of the controller 31 through the connection-breaking control mechanism. The follow-up rotation mechanism includes a second threaded sleeve 17 movably installed on the lead screw 5 and threadedly engaged with the lead screw 5. A second guide sleeve 18 connected to the second threaded sleeve 17 is slidably installed on the rotating rod 10. It further includes a second vertical groove 1003 and an annular groove 1004 formed in the rotating rod 10. A pushing ring 19 in sliding contact with the second guide sleeve 18 is slidably installed on the rotating rod 10. A second limiting block 20 slidably connected to the second vertical groove 1003 and the annular groove 1004 is provided on the inner wall of the pushing ring 19. An elastic component connected to the pushing ring 19 is provided on the rotating rod 10. Among them, the elastic component includes a second spiral groove 1005 formed in the rotating rod 10. An active plate 22 slidably connected to the lead screw 5 is slidably installed on the rotating rod 10. A third limiting block 23 slidably connected to the second spiral groove 1005 is provided on the inner wall of the active plate 22. It also includes a second spring 21 and a third spring 24 sleeved on the rotating rod 10. Two ends of the second spring 21 are respectively abutted against the active plate 22 and the pushing ring 19, and the third spring 24 is abutted against the active plate 22.

[0059] Furthermore, in order to reduce the arc generated when the circuit breaker is disconnected, it is necessary to control the moving contact 29 to quickly separate from the static contact 30. In the initial state, the trolley 2 is in the working position, the second threaded sleeve 17 is at the end of the stroke towards the handwheel 4, both the second spring 21 and the third spring 24 are in the pre-compressed state, and the elastic potential energy of the second spring 21 is less than the elastic potential energy of the third spring 24. Therefore, the thrust exerted by the second spring 21 on the active plate 22 is less than the thrust exerted by the third spring 24 on the active plate 22, so that the third limiting block 23 is at the end of the stroke of the second spiral groove 1005 towards the handwheel 4. The second spring 21 and the third spring 24 also control the pushing ring 19 to be in the position where it fits with the second guide sleeve 18, so that the second limiting block 20 is at the end of the stroke of the second vertical groove 1003 away from the annular groove 1004.

[0060] When it is necessary to adjust the position of the handcart 2, the circuit breaker needs to be disconnected. At this time, the handwheel 4 rotates, driving the lead screw 5 to rotate, thereby driving the movement of the second threaded sleeve 17. The second threaded sleeve 17 also drives the second guiding sleeve 18 to move along the length direction of the rotating rod 10, thus driving the pushing ring 19 to move synchronously. The pushing ring 19 will drive the second limiting block 20 to move along the length direction of the second vertical groove 1003 and compress the second spring 21. When the pushing ring 19 moves, under the action of the trigger reset mechanism, it is ensured that the pushing ring 19 does not rotate. Therefore, the second limiting block 20 and the second vertical groove 1003 will limit the rotation of the rotating rod 10, and under the action of the second spiral groove 1005 and the third limiting block 23, it is ensured that the position of the movable plate 22 does not change.

[0061] As the pushing ring 19 moves, the elastic potential energy of the second spring 21 will gradually exceed the elastic potential energy of the third spring 24. When the second limiting block 20 moves to the connection position of the second vertical groove 1003 and the annular groove 1004, the second limiting block 20 can slide along the trajectory of the annular groove 1004. Therefore, the rotating rod 10 can rotate in one direction. Since the elastic potential energy of the second spring 21 is greater than the elastic potential energy of the third spring 24, the movable plate 22 will move in the direction away from the pushing ring 19 to drive the third limiting block 23 to slide along the trajectory of the second spiral groove 1005, causing the rotating rod 10 to rotate. At this time, the second limiting block 20 will enter the annular groove 1004. When the third limiting block 23 moves to the end of the other side of the second spiral groove 1005, the second limiting block 20 also moves to the end of the annular groove 1004, and the limiting post 9 just disengages from the first horizontal groove 202 and enters the first straight groove 201. At this time, the handcart 2 can move freely along the sliding groove 101. When the rotating rod 10 rotates, it will also drive the rotating ring 25 to move, and under the action of the third spiral groove 2501 and the protruding post 28, the moving contact 29 is separated from the static contact 30, thereby controlling the disconnection of the circuit breaker.

[0062] Preferably, during the process of disconnecting the circuit breaker, by restricting the rotation of the rotating rod 10 and gradually increasing the elastic potential energy of the second spring 21, when the rotating rod 10 can rotate, the elastic potential energy of the second spring 21 can be quickly released, causing the rotating rod 10 to rotate quickly, thereby accelerating the separation speed of the moving contact 29 and the static contact 30 to reduce the generation of electric arcs. At the same time, only when the second limiting block 20 moves to the connection position of the annular groove 1004 and the second vertical groove 1003 can the rotating rod 10 rotate, and at this time, the limiting post 9 just disengages from the first horizontal groove 202 and enters the first straight groove 201, so that the handcart 2 is no longer locked. During this process, the handwheel 4 needs to rotate several circles to achieve the above operation. Therefore, it avoids the problem that the circuit breaker disconnects and the handcart 2 moves when the operator slightly rotates the handwheel 4 due to misoperation, achieving an anti-fooling effect.

[0063] Please refer to Figure 2 , Figure 4 , Figure 5 , Figures 7 to 11 , trigger the reset mechanism, which is arranged on the displacement locking mechanism and connected to the follower rotation mechanism. The trigger reset mechanism can act when the displacement locking mechanism locks the trolley 2, so as to control the reset of the connection-breaking regulation mechanism through the follower rotation mechanism. The trigger reset mechanism includes a guide post 13 slidably installed on the first guide sleeve 11. The guide post 13 is slidably connected to the pushing ring 19. A first movable ring 12 sleeved on the rotating rod 10 is installed on the guide post 13. A limiting component connected to the guide post 13 is arranged on the rotating rod 10. Wherein, the limiting component includes a first vertical groove 1001 and a first spiral groove 1002 opened on the rotating rod 10. A second movable ring 14 sleeved on the rotating rod 10 is installed on the guide post 13. A first limiting block 15 slidably connected to the first vertical groove 1001 and the first spiral groove 1002 is arranged on the inner wall of the second movable ring 14; A first spring 16 sleeved on the rotating rod 10 is also included. Two ends of the first spring 16 are respectively abutted against the first guide sleeve 11 and the second movable ring 14.

[0064] Furthermore, in the initial state, the trolley 2 is in the working state. The first threaded sleeve 6 is at the end of the stroke towards the handwheel 4. The first spring 16 is in a compressed state and provides a certain thrust to the second movable ring 14, causing the second movable ring 14 to be at the end of the stroke away from the first guiding sleeve 11. The second movable ring 14 also controls the first movable ring 12 to fit with the first guiding sleeve 11 through the guiding column 13. When it is necessary to adjust the position of the trolley 2, at this time, the handwheel 4 rotates and drives the lead screw 5 to rotate, thereby driving the first threaded sleeve 6 and the second threaded sleeve 17 to move. The first threaded sleeve 6 will drive the first guiding sleeve 11 to move and push the second movable ring 14 to move synchronously through the first spring 16, so as to control the first movable ring 12 to always fit with the first guiding sleeve 11 through the guiding column 13. The second movable ring 14 also controls the first limiting block 15 to move along the length direction of the first vertical groove 1001. The second threaded sleeve 17 will drive the second guiding sleeve 18 to move, so as to control the second limiting block 20 to move along the length direction of the second vertical groove 1003 through the pushing ring 19. When the first limiting block 15 moves to the connecting position of the first vertical groove 1001 and the first spiral groove 1002, the second limiting block 20 is still in the second vertical groove 1003, and the rotating rod 10 will not rotate. Therefore, the second movable ring 14 stops moving. At this time, the first guiding sleeve 11 will compress the first spring 16 and separate from the first movable ring 12. When the second limiting block 20 moves to the connecting position of the second vertical groove 1003 and the annular groove 1004, the rotating rod 10 will rotate, causing the second limiting block 20 to enter the annular groove 1004. At the same time, the first spring 16 elastically releases and controls the first limiting block 15 to enter the first spiral groove 1002 through the second movable ring 14. At this time, the circuit breaker disconnects, and the trolley 2 can move freely.

[0065] Preferably, when the trolley 2 moves to the test position and it is necessary to switch on the circuit breaker, at this time, the handwheel 4 rotates reversely, so that the first threaded sleeve 6 and the second threaded sleeve 17 move towards the initial position, driving the first guide sleeve 11 and the second guide sleeve 18 to move. Since the second limiting block 20 is located in the annular groove 1004, the pushing ring 19 will not move with the second guide sleeve 18. When the first guide sleeve 11 moves to the position abutting against the first movable ring 12, it drives the first movable ring 12 to move, thereby controlling the movement of the second movable ring 14 through the guide post 13, so that the first limiting block 15 slides along the first spiral groove 1002, causing the rotating rod 10 to rotate towards the initial angle. When the first limiting block 15 disengages from the first spiral groove 1002, the second limiting block 20 just disengages from the annular groove 1004. At this time, the moving contact 29 moves to the position abutting against the static contact 30 again, making the circuit breaker switched on again. At this time, the second spring 21 and the third spring 24 are elastically released, causing the pushing ring 19 to move with the second guide sleeve 18. Until the first threaded sleeve 6 and the second threaded sleeve 17 are reset, under the action of the limiting post 9, the trolley 2 is locked at the test position again.

[0066] Among them, during the disconnection process of the circuit breaker, the first limiting block 15 will not affect the disconnection of the circuit breaker. When the trolley 2 moves to the test position, only by simply adjusting the position of the first limiting block 15, the circuit breaker can be controlled to be switched on again, so as to realize the locking of the trolley 2 and the opening and closing states of the circuit breaker and the earthing switch by controlling the rotation of the handwheel 4.

[0067] A breaking method for a high-voltage trolley type switch cabinet includes the following steps:

[0068] Step 1: In the initial state, under the action of the displacement locking mechanism, the position of the trolley 2 is locked;

[0069] Step 2: When it is necessary to adjust the position of the trolley 2, under the action of the displacement locking mechanism, the follow-up rotation mechanism and the trigger reset mechanism are controlled to move, and the controller 31 is controlled to be disconnected through the connection-breaking regulation mechanism, so that the circuit breaker is in the disconnected state;

[0070] Step 3: At this time, the position of the trolley 2 can be adjusted. When the trolley 2 moves to the test position, under the action of the displacement locking mechanism, the follow-up rotation mechanism is controlled to be reset through the trigger reset mechanism, so as to drive the controller 31 to be connected again through the connection-breaking regulation mechanism;

[0071] Step 4: The displacement locking mechanism can also lock the position of the trolley 2 again to ensure that the position of the trolley 2 will not change when the circuit breaker is switched on.

[0072] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0073] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-voltage handcart-type switch cabinet, comprising: a cabinet body (1), and a chute (101) opened in the cabinet body (1), a handcart (2) is slidably installed in the chute (101), and a fixing plate (3) is arranged in the cabinet body (1); It is characterized in that it further comprises: a displacement locking mechanism, arranged on the fixing plate (3) and connected to the handcart (2), for adjusting the locking state of the handcart (2); a controller (31), installed in the cabinet body (1), a connection-breaking and regulating mechanism connected to the controller (31) is arranged on the fixing plate (3), a follow-up rotating mechanism is arranged on the displacement locking mechanism, and the follow-up rotating mechanism can, when the displacement locking mechanism moves, adjust the switch state of the controller (31) through the connection-breaking and regulating mechanism; a trigger reset mechanism, arranged on the displacement locking mechanism and connected to the follow-up rotating mechanism, the trigger reset mechanism can act when the displacement locking mechanism locks the handcart (2), so as to control the reset of the connection-breaking and regulating mechanism through the follow-up rotating mechanism; The displacement locking mechanism includes a lead screw (5) rotatably installed on the fixing plate (3), a hand wheel (4) is arranged at the end of the lead screw (5), and a first thread sleeve (6) threadedly matched with the lead screw (5) is movably installed on the lead screw (5); It further includes a rotating rod (10) rotatably installed on the fixing plate (3), a first guiding sleeve (11) is slidably installed on the rotating rod (10), the first guiding sleeve (11) is connected to the first thread sleeve (6), and a guiding component connected to the handcart (2) is arranged on the first thread sleeve (6); The connection-breaking and regulating mechanism includes a support rod (26) installed on the fixing plate (3), a sliding sleeve (27) is slidably installed on the support rod (26), a moving contact (29) is arranged on the side wall of the sliding sleeve (27), a static contact (30) matched with the moving contact (29) is arranged at the end of the support rod (26), and a driven component connected to the sliding sleeve (27) is arranged on the rotating rod (10); The follow-up rotating mechanism includes a second thread sleeve (17) movably installed on the lead screw (5) and threadedly matched with the lead screw (5), and a second guiding sleeve (18) slidably installed on the rotating rod (10) and connected to the second thread sleeve (17); It further includes a second vertical groove (1003) and an annular groove (1004) opened on the rotating rod (10), a pushing ring (19) slidably installed on the rotating rod (10) and in abutting cooperation with the second guiding sleeve (18), a second limiting block (20) slidably connected to the second vertical groove (1003) and the annular groove (1004) is arranged on the inner wall of the pushing ring (19), and an elastic component connected to the pushing ring (19) is arranged on the rotating rod (10); The trigger reset mechanism includes a guide post (13) slidably mounted on the first guide sleeve (11). The guide post (13) is slidably connected to the pushing ring (19). A first movable ring (12) sleeved on the rotating rod (10) is mounted on the guide post (13). A limiting component connected to the guide post (13) is arranged on the rotating rod (10).

2. The high-voltage handcart type switch cabinet according to claim 1, characterized in that, The guiding component includes a support plate (7) mounted on the side wall of the first threaded sleeve (6). A guiding groove (8) is formed in the support plate (7). A limiting post (9) is slidably mounted in the guiding groove (8). A guiding groove slidably connected to the limiting post (9) is formed at the bottom of the handcart (2).

3. The high-voltage handcart type switch cabinet according to claim 1, characterized in that, The driven component includes a rotating ring (25) mounted at the end of the rotating rod (10). A third spiral groove (2501) is formed on the outer wall of the rotating ring (25). A protruding post (28) slidably connected to the third spiral groove (2501) is arranged on the side wall of the sliding sleeve (27).

4. A high-voltage handcart type switch cabinet according to claim 1, characterized in that, The elastic component includes a second spiral groove (1005) formed on the rotating rod (10). A movable plate (22) slidably connected to the lead screw (5) is slidably mounted on the rotating rod (10). A third limiting block (23) slidably connected to the second spiral groove (1005) is arranged on the inner wall of the movable plate (22). Further included are a second spring (21) and a third spring (24) sleeved on the rotating rod (10). Two ends of the second spring (21) are respectively abutted against the movable plate (22) and the pushing ring (19). The third spring (24) is abutted against the movable plate (22).

5. A high-voltage handcart type switchgear according to claim 1, characterized in that, The limiting component includes a first vertical groove (1001) and a first spiral groove (1002) formed on the rotating rod (10). A second movable ring (14) sleeved on the rotating rod (10) is mounted on the guide post (13). A first limiting block (15) slidably connected to the first vertical groove (1001) and the first spiral groove (1002) is arranged on the inner wall of the second movable ring (14). Further included is a first spring (16) sleeved on the rotating rod (10). Two ends of the first spring (16) are respectively abutted against the first guide sleeve (11) and the second movable ring (14).

6. A breaking method for a high-voltage draw-out switchgear cabinet, using the high-voltage draw-out switchgear cabinet according to any one of claims 1-5, characterized in that, It includes the following steps: Step 1: In the initial state, the position of the handcart (2) is locked under the action of the displacement locking mechanism. Step 2: When it is necessary to adjust the position of the handcart (2), under the action of the displacement locking mechanism, control the movement of the follower rotation mechanism and the trigger reset mechanism, and control the controller (31) to disconnect through the connection-disconnection regulation mechanism, so that the circuit breaker is in the off state. Step 3: At this time, the position of the handcart (2) can be adjusted. When the handcart (2) moves to the test position, under the action of the displacement locking mechanism, control the follower rotation mechanism to reset through the trigger reset mechanism, so as to drive the controller (31) to be connected again through the connection-disconnection regulation mechanism. Step 4: The displacement locking mechanism can also lock the position of the handcart (2) again to ensure that the position of the handcart (2) will not change when the circuit breaker is switched on.

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