A trolley switch cabinet with electric auxiliary protection and its installation method

Abstract

The present invention relates to the technical field of switch cabinets, and specifically to a trolley switch cabinet with electric auxiliary protection and an installation method thereof, comprising: a switch cabinet body, and a cabinet door rotatably installed on the switch cabinet body, wherein a through slot is provided in the switch cabinet body; a locking mechanism, which is arranged in the through slot and connected to the cabinet door, and a rotating sleeve connected to the locking mechanism is rotatably installed in the through slot, and a follow-up rotating mechanism is provided in the rotating sleeve, and the follow-up rotating mechanism can drive the rotating sleeve to rotate when the locking mechanism moves, so as to perform a locking action on the cabinet door through the locking mechanism; a rotation limiting mechanism, which is arranged in the through slot and connected to the rotating sleeve, and an electromagnetic control component connected to the rotation limiting mechanism is also provided in the through slot, and the rotation limiting mechanism can be activated when the electromagnetic control component is energized, so as to lock the angle of the rotating sleeve through the rotation limiting mechanism. The present application can lock the cabinet door when the switch cabinet is energized to prevent damage to the equipment caused by misoperation.

Description

Technical Field

[0001] The present invention relates to the technical field of switch cabinets, in particular to a handcart switch cabinet with electric auxiliary protection and an installation method thereof. Background Art

[0002] A trolley-type switchgear is a device that uses a manual transfer mechanism and movable switching devices to control and protect power systems. Trolley-type switchgear typically consists of two parts: a fixed part and a trolley. The trolley is manually driven and is used to open and close circuit breakers and disconnectors.

[0003] The design of the trolley-type switchgear allows major electrical equipment such as high-voltage circuit breakers to be pulled out for maintenance at any time. After the maintenance is completed, a spare trolley can be pushed in to restore power supply, improving power supply reliability and maintenance safety.

[0004] When the switch cabinet is powered on, it is necessary to keep the switch cabinet in a locked state. Existing switch cabinet locking is usually performed through mechanical transmission. If the unlocking part fails to lock the switch cabinet due to misoperation when the device is powered on, it may cause damage to the equipment or dangerous problems such as personnel operating with power on. Summary of the Invention

[0005] The object of the present invention is to provide a trolley switch cabinet with electric auxiliary protection and an installation method thereof, so as to solve the problems raised in the above background technology.

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

[0007] A trolley switch cabinet with electric auxiliary protection, comprising:

[0008] A switch cabinet body, and a cabinet door rotatably mounted on the switch cabinet body, wherein a through slot is formed in the switch cabinet body;

[0009] Also includes:

[0010] A locking mechanism is disposed in the through slot and connected to the cabinet door. A rotating sleeve connected to the locking mechanism is rotatably mounted in the through slot. A follower rotating mechanism is disposed in the rotating sleeve. The follower rotating mechanism can drive the rotating sleeve to rotate when the locking mechanism moves, so as to lock the cabinet door through the locking mechanism.

[0011] A rotation limiting mechanism is arranged in the through slot and connected to the rotating sleeve. An electromagnetic control component connected to the rotation limiting mechanism is also arranged in the through slot. The rotation limiting mechanism can be activated when the electromagnetic control component is energized to lock the angle of the rotating sleeve through the rotation limiting mechanism.

[0012] As a further solution of the present invention: the locking mechanism includes a sliding groove opened on the cabinet door, a sliding block is slidably installed in the sliding groove, a push rod is provided on the sliding block, and a guide assembly connected to the rotating sleeve is provided on the sliding block.

[0013] As a further solution of the present invention: the guide assembly includes a locking rod installed on the side wall of the sliding block, the locking rod is slidably connected to the rotating sleeve, the circumferential outer wall of the locking rod is provided with a vertical groove and an annular groove, the end of the vertical groove is connected to the end of the annular groove, the inner wall of the rotating sleeve is provided with a first limit block that is slidably engaged with the vertical groove and the annular groove, and the rotating sleeve is provided with an unlocking structure.

[0014] As a further solution of the present invention: the unlocking structure includes an oblique slot provided on the switch cabinet body, and the rotating sleeve is provided with a follower rod passing through the oblique slot.

[0015] As a further solution of the present invention: the follow-up rotation mechanism includes a limiting hole provided on the locking rod, and a limiting column is provided in the through groove and is slidably connected to the limiting hole;

[0016] It also includes a spiral groove opened on the inner wall of the rotating sleeve, a movable ring slidably installed on the limiting column and slidably connected to the rotating sleeve, a second limiting block slidably engaged with the spiral groove is provided on the movable ring, and an elastic component connected to the movable ring is provided on the limiting column.

[0017] As a further solution of the present invention: the elastic component includes a first spring and a second spring mounted on the limiting column, the two ends of the first spring respectively abut against the movable ring and the locking rod, and the two ends of the second spring respectively abut against the through groove and the movable ring.

[0018] As a further solution of the present invention: the rotation limiting mechanism includes a card slot opened in the switch cabinet body and connected to the through slot, a guide column is provided in the card slot, a movable block slidably connected to the slide slot is slidably mounted on the guide column, a third spring abutting against the movable block is sleeved on the guide column, and a limiting assembly connected to the rotating sleeve is provided on the movable block.

[0019] As a further solution of the present invention: the limiting assembly includes a connecting plate installed on the movable block and slidingly connected to the rotating sleeve, the connecting plate is provided with a limiting tooth, and the rotating sleeve is provided with a fixed tooth engaged with the limiting tooth.

[0020] As a further solution of the present invention: the electromagnetic control component includes an iron core installed in the through slot, a coil is wound around the iron core, and a magnet block that cooperates with the iron core is provided on the connecting plate.

[0021] A method for installing a trolley switch cabinet with electric auxiliary protection includes the following steps:

[0022] Step 1: Fit the cabinet door onto the switch cabinet body and drive the locking mechanism to move it to a position where it cooperates with the rotating sleeve;

[0023] Step 2: The locking mechanism also drives the follower rotating mechanism to move. Under the action of the follower rotating mechanism, the rotating sleeve rotates, thereby locking the cabinet door through the locking mechanism;

[0024] Step 3: When the electromagnetic control component is powered on, the electromagnetic control component controls the rotation limiting mechanism to move so as to lock the angle of the rotating sleeve.

[0025] Compared with the prior art, the beneficial effect of the present invention is that the present application can lock the cabinet door when the equipment is powered on to ensure that the switch cabinet body always remains in a closed state and the equipment will not be damaged. Specifically, when the cabinet door is closed, the locking mechanism is controlled to move to a position that cooperates with the rotating sleeve, and when the locking mechanism moves to a position that cooperates with the follow-up rotating mechanism, the follow-up rotating mechanism accumulates elastic potential energy. When the locking mechanism moves to the desired position, the rotating sleeve is rotated under the action of the follow-up rotating mechanism to lock the position of the locking mechanism, thereby locking the cabinet body. At this time, the equipment can be powered on. After the equipment is powered on, the electromagnetic control component will also be powered on and generate electromagnetic force, thereby driving the rotation limiting mechanism to move to lock the angle of the rotating sleeve to ensure that the position of the locking mechanism will not change. The dual locking force of the electromagnetic control component and the locking mechanism can ensure that the cabinet door will not open when the equipment is powered on. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural schematic diagram of an embodiment of a trolley switch cabinet with electric auxiliary protection.

[0027] Figure 2 This is a structural diagram of the switch cabinet body and part of the locking mechanism in an embodiment of a trolley switch cabinet with electric auxiliary protection.

[0028] Figure 3 for Figure 2 A magnified schematic diagram of the structure at point A.

[0029] Figure 4 This is a schematic diagram of the half-section structure of the switch cabinet body in one embodiment of the electric assisted protection trolley switch cabinet.

[0030] Figure 5 This is a schematic diagram of the connection relationship between some locking mechanisms, rotation limiting mechanisms, and electromagnetic control components in an embodiment of a trolley switch cabinet with electric assisted protection.

[0031] Figure 6 for Figure 5 Schematic diagram of the structure from another angle.

[0032] Figure 7 This is a schematic diagram of a partially half-section structure of an embodiment of a trolley switch cabinet with electric auxiliary protection.

[0033] Figure 8 for Figure 7 A magnified schematic diagram of the structure at point B.

[0034] Figure 9 This is a schematic diagram of the explosion structure of a partial locking mechanism, a follow-up rotation mechanism, and a partial rotation limiting mechanism in an embodiment of a trolley switch cabinet with electric auxiliary protection.

[0035] In the figure: 1. switch cabinet body; 101. inclined slot; 102. through slot; 2. cabinet door; 201. slide slot; 3. sliding block; 4. push rod; 5. locking rod; 501. vertical slot; 502. annular slot; 6. limiting hole; 7. rotating sleeve; 701. spiral groove; 8. first limiting block; 9. limiting column; 10. movable ring; 11. second limiting block; 12. first spring; 13. second spring; 14. follower rod; 15. slot; 16. guide column; 17. movable block; 18. third spring; 19. connecting plate; 20. limiting tooth; 21. fixed tooth; 22. magnet block; 23. iron core; 24. coil. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0037] 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 an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0038] See also Figures 1 to 9In an embodiment of the present invention, a trolley switch cabinet with electric auxiliary protection includes:

[0039] A switch cabinet body 1, and a cabinet door 2 rotatably mounted on the switch cabinet body 1, wherein a through slot 102 is formed in the switch cabinet body 1;

[0040] Also includes:

[0041] A locking mechanism is provided in the through slot 102 and connected to the cabinet door 2. A rotating sleeve 7 connected to the locking mechanism is rotatably mounted in the through slot 102. A follower rotating mechanism is provided in the rotating sleeve 7. The follower rotating mechanism can drive the rotating sleeve 7 to rotate when the locking mechanism moves, so as to lock the cabinet door 2 through the locking mechanism.

[0042] A rotation limiting mechanism is arranged in the through slot 102 and connected to the rotating sleeve 7. An electromagnetic control component connected to the rotation limiting mechanism is also provided in the through slot 102. The rotation limiting mechanism can be activated when the electromagnetic control component is energized to lock the angle of the rotating sleeve 7 through the rotation limiting mechanism.

[0043] Specifically, when the cabinet door 2 is in a closed state, the locking mechanism moves, and when the locking mechanism cooperates with the rotating sleeve 7, the locking mechanism will drive the follow-up rotating mechanism to move, so that the rotating sleeve 7 rotates a certain angle. Under the action of the rotating sleeve 7 and the locking mechanism, the angle of the cabinet door 2 is locked. At the same time, when the electromagnetic control component is energized, under the action of the electromagnetic force, the rotation limiting mechanism is driven to move, thereby locking the angle of the rotating sleeve 7. Through the double locking of the electromagnetic control component and the locking mechanism, it can be ensured that when the equipment is in a powered state, the cabinet door 2 is always in a locked state to prevent equipment damage or power outages due to misoperation, and also to avoid injuries to personnel when the equipment is in a live state and personnel enter the live interval.

[0044] See also Figure 1-Figure 7 、 Figure 9The locking mechanism includes a sliding groove 201 provided on the cabinet door 2, a sliding block 3 is slidably installed in the sliding groove 201, a push rod 4 is provided on the sliding block 3, and a guide assembly connected to the rotating sleeve 7 is provided on the sliding block 3, wherein the guide assembly includes a locking rod 5 installed on the side wall of the sliding block 3, the locking rod 5 is slidably connected to the rotating sleeve 7, the circumferential outer wall of the locking rod 5 is provided with a vertical groove 501 and an annular groove 502, the end of the vertical groove 501 is connected to the end of the annular groove 502, the inner wall of the rotating sleeve 7 is provided with a first limit block 8 slidingly engaged with the vertical groove 501 and the annular groove 502, and an unlocking structure is provided on the rotating sleeve 7. The unlocking structure mentioned above includes an oblique groove 101 provided on the switch cabinet body 1, and a follower rod 14 passing through the oblique groove 101 is provided on the rotating sleeve 7.

[0045] When the lock rod 5 is inserted into the rotating sleeve 7 and controls the vertical slot 501 to move to the position cooperating with the first limit block 8, the first limit block 8 will be moved into the locking position. When the locking rod 5 abuts against the follower rotating mechanism, the follower rotating mechanism will move and store elastic potential energy, so that the rotating sleeve 7 has a tendency to rotate. When the first limit block 8 moves to the connection position between the vertical groove 501 and the annular groove 502, the rotating sleeve 7 is no longer locked. Under the action of the follower rotating mechanism, the rotating sleeve 7 rotates a certain angle to make the first limit block 8 enter the annular groove 502 and move to the end of the stroke of the annular groove 502 away from the vertical groove 501. At this time, under the action of the annular groove 502 and the first limit block 8, the position of the locking rod 5 is locked to ensure that the position of the cabinet door 2 no longer changes. When the rotating sleeve 7 rotates, it will also drive the follower rod 14 to slide along the inclined groove 101.

[0046] Preferably, when the device is not powered on, if it is necessary to unlock the cabinet door 2, at this time, the follower rod 14 can be held by hand, and the rotating sleeve 7 can be driven to rotate by the follower rod 14, thereby driving the first limit block 8 to move toward the vertical groove 501. When the vertical groove 501 moves to the connection position between the annular groove 502 and the vertical groove 501, under the action of the follower rotation mechanism, the locking rod 5 moves toward the outside of the rotating sleeve 7. At this time, under the action of the push rod 4, the locking rod 5 is controlled to disengage from the rotating sleeve 7 through the sliding block 3. When the locking rod 5 is separated from the rotating sleeve 7, the cabinet door 2 can be opened.

[0047] See also Figure 7-Figure 9 The follow-up rotation mechanism includes a limiting hole 6 provided on the locking rod 5, and a limiting column 9 slidably connected to the limiting hole 6 is provided in the through groove 102; it also includes a spiral groove 701 provided on the inner wall of the rotating sleeve 7, and a movable ring 10 slidably installed on the limiting column 9 and slidably connected to the rotating sleeve 7, and a second limiting block 11 slidably engaged with the spiral groove 701 is provided on the movable ring 10, and an elastic component connected to the movable ring 10 is provided on the limiting column 9, wherein the elastic component includes a first spring 12 and a second spring 13 sleeved on the limiting column 9, the two ends of the first spring 12 respectively abut against the movable ring 10 and the locking rod 5, and the two ends of the second spring 13 respectively abut against the through groove 102 and the movable ring 10.

[0048] It should be noted that in the initial state, the locking rod 5 is located outside the rotating sleeve 7, the first spring 12 is in a normal state, and the second spring 13 is in a compressed state. Under the action of the second spring 13, the movable ring 10 is located at the end of the stroke away from the rotating sleeve 7, so that the second limit block 11 is located at the end of the stroke on one side of the spiral groove 701. When the locking rod 5 is inserted into the rotating sleeve 7, the first limit block 8 will enter the vertical groove 501, and the rotating sleeve 7 is in a locked state, so that the spiral groove 701 will not move. Under the action of the spiral groove 701 and the second limit block 11, the position of the movable ring 10 is locked. As the locking rod 5 continues to move, the locking rod 5 will abut against the first spring 12 and gradually compress the first spring 12. When the first limit block 8 is still located in the vertical groove 501, the elastic potential energy of the first spring 12 will exceed Due to the elastic potential energy of the second spring 13, when the first limit block 8 moves to the connection position of the vertical groove 501 and the annular groove 502, the angle of the rotating sleeve 7 is no longer locked. At this time, the first spring 12 is elastically released and drives the movable ring 10 to move in the direction away from the locking rod 5 to compress the second spring 13. The movable ring 10 will also drive the second limit block 11 to move. Under the action of the second limit block 11 and the spiral groove 701, the rotating sleeve 7 rotates a certain angle to allow the first limit block 8 to enter the annular groove 502. When the second limit block 11 moves to the end of the stroke on the other side of the spiral groove 701, the elastic potential energy of the first spring 12 is still greater than the elastic potential energy of the second spring 13, so that the rotating sleeve 7 still has a tendency to rotate, ensuring that the first limit block 8 is locked at the end of the stroke of the annular groove 502 away from the vertical groove 501.

[0049] Preferably, the locking rod 5 can be locked in position in the horizontal direction by inserting the locking rod 5 into the rotating sleeve 7, and when the depth of the locking rod 5 inserted into the rotating sleeve 7 reaches the maximum, the position of the locking rod 5 is locked by the annular groove 502 and the first limit block 8. At the same time, the elastic potential energy of the first spring 12 and the second spring 13 will be converted, so that the thrust direction of the movable ring 10 changes, so that the direction of the rotation trend of the rotating sleeve 7 changes, ensuring that the first limit block 8 will not disengage from the annular groove 502, thereby achieving the effect of convenient and quick locking of the cabinet door 2.

[0050] See also Figure 4-Figure 7 、 Figure 9The rotation limiting mechanism includes a slot 15 opened in the switch cabinet body 1 and connected to the through slot 102, a guide column 16 is provided in the slot 15, and a movable block 17 slidably connected to the slide slot 201 is slidably mounted on the guide column 16, and a third spring 18 is sleeved on the guide column 16 and abuts against the movable block 17, and a limit assembly connected to the rotating sleeve 7 is provided on the movable block 17, wherein the limit assembly includes a connecting plate 19 installed on the movable block 17 and slidably connected to the rotating sleeve 7, a limiting tooth 20 is provided on the connecting plate 19, and a fixed tooth 21 engaged with the limiting tooth 20 is provided on the rotating sleeve 7.

[0051] Furthermore, in the initial state, the third spring 18 is in a compressed state, so that the movable block 17 is located at the end of the stroke of the guide column 16 away from the through slot 102. Under the action of the movable block 17, the limit tooth 20 and the fixed tooth 21 are controlled to be in a separated state through the connecting plate 19. At this time, the rotating sleeve 7 can rotate freely. When the locking rod 5 is inserted into the rotating sleeve 7 and the first limit block 8 moves to the end of the stroke of the annular groove 502 away from the vertical slot 501, the locking rod 5 is in a locked state, thereby locking the position of the cabinet door 2. At the same time, when the device is powered on, the electromagnetic control component is in a powered state and generates an electromagnetic The force is generated, thereby generating magnetic attraction on the magnet block 22, causing the magnet block 22 to move toward the direction of the electromagnetic control component. The magnet block 22 will also drive the connecting plate 19 to move, thereby moving along the length direction of the guide column 16 through the movable block 17. Under the action of the movable block 17, the third spring 18 is compressed, and the connecting plate 19 will also drive the limiting tooth 20 to move. When the limiting tooth 20 moves to the engaging position with the fixed tooth 21, under the action of the limiting tooth 20 and the fixed tooth 21, the angle of the rotating sleeve 7 is locked to ensure that the first limiting block 8 will not disengage from the annular groove 502, thereby locking the cabinet door 2 again.

[0052] Preferably, when the device is not powered on, the position of the locking rod 5 can be unlocked by controlling the rotation of the rotating sleeve 7 through the follower rod 14. If the device is powered on, in order to prevent the device from being in a live state, the cabinet door 2 is opened for operations such as testing the electricity and hanging the ground wire. This may cause damage to the equipment or live operation and cause personal injury. Therefore, after the device is powered on, the angle of the rotating sleeve 7 can be locked by the generated electromagnetic force to ensure that the follower rod 14 will not cause the cabinet door 2 to be no longer locked due to misoperation.

[0053] See also Figure 4-Figure 7 The electromagnetic control component includes an iron core 23 installed in the through slot 102, a coil 24 is wound around the iron core 23, and a magnet block 22 that cooperates with the iron core 23 is provided on the connecting plate 19.

[0054] To go further, in the initial state, the coil 24 is in the power-off state. Under the action of the third spring 18, the distance between the magnet block 22 and the iron core 23 is maximized. When the locking rod 5 is inserted into the rotating sleeve 7 and the first limit block 8 moves into the annular groove 502, the device can be powered on at this time to energize the coil 24. Under the action of the coil 24 and the iron core 23, an electromagnetic force will be generated, thereby attracting the magnet block 22. Under the action of the magnet block 22, the connecting plate 19 is controlled to move to control the limit latch 20 and the fixed latch 21 to engage with each other, thereby locking the angle of the rotating sleeve 7.

[0055] Preferably, if the device loses power due to an accident, the generated electromagnetic force disappears, the third spring 18 is elastically released, and drives the connecting plate 19 to move in a direction away from the fixed tooth 21, so that the limit tooth 20 is separated from the fixed tooth 21, and the rotating sleeve 7 can rotate freely. At this time, under the action of the first spring 12, the rotating sleeve 7 is still subjected to a certain locking force, ensuring that the cabinet door 2 can be unlocked only after the power is cut off.

[0056] A method for installing a trolley switch cabinet with electric auxiliary protection includes the following steps:

[0057] Step 1: Fit the cabinet door 2 onto the switch cabinet body 1 and drive the locking mechanism to move so that the locking mechanism moves to a position where it cooperates with the rotating sleeve 7;

[0058] Step 2: The locking mechanism also drives the follower rotating mechanism to move. Under the action of the follower rotating mechanism, the rotating sleeve 7 rotates, thereby locking the cabinet door 2 through the locking mechanism.

[0059] Step 3: When the electromagnetic control component is powered on, the electromagnetic control component controls the rotation limiting mechanism to move so as to lock the angle of the rotating sleeve 7.

[0060] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0061] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method 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 can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A trolley switch cabinet with electric auxiliary protection, comprising: A switch cabinet body (1), and a cabinet door (2) rotatably mounted on the switch cabinet body (1), wherein a through slot (102) is provided in the switch cabinet body (1); It is characterized by further comprising: A locking mechanism is arranged in the through slot (102) and connected to the cabinet door (2); a rotating sleeve (7) connected to the locking mechanism is rotatably installed in the through slot (102); a follower rotating mechanism is arranged in the rotating sleeve (7); the follower rotating mechanism can drive the rotating sleeve (7) to rotate when the locking mechanism moves, so as to perform a locking action on the cabinet door (2) through the locking mechanism; A rotation limiting mechanism is provided in the through slot (102) and is connected to the rotating sleeve (7); an electromagnetic control component connected to the rotation limiting mechanism is also provided in the through slot (102); the rotation limiting mechanism is capable of being activated when the electromagnetic control component is energized, so as to lock the angle of the rotating sleeve (7) through the rotation limiting mechanism; The locking mechanism comprises a sliding groove (201) provided on the cabinet door (2), a sliding block (3) being slidably mounted in the sliding groove (201), a push rod (4) being provided on the sliding block (3), and a guide assembly connected to the rotating sleeve (7) being provided on the sliding block (3); The guide assembly includes a locking rod (5) mounted on the side wall of the sliding block (3), the locking rod (5) being slidably connected to the rotating sleeve (7), a vertical groove (501) and an annular groove (502) being provided on the circumferential outer wall of the locking rod (5), the end of the vertical groove (501) being connected to the end of the annular groove (502), the inner wall of the rotating sleeve (7) being provided with a first limiting block (8) slidably engaged with the vertical groove (501) and the annular groove (502), and an unlocking structure being provided on the rotating sleeve (7); The unlocking structure comprises an inclined slot (101) provided on the switch cabinet body (1), and a follower rod (14) passing through the inclined slot (101) is provided on the rotating sleeve (7); The follow-up rotation mechanism includes a limiting hole (6) provided on the locking rod (5), and a limiting column (9) slidably connected to the limiting hole (6) is provided in the through groove (102); It also includes a spiral groove (701) provided on the inner wall of the rotating sleeve (7), a movable ring (10) slidably mounted on the limiting column (9) and slidably connected to the rotating sleeve (7), a second limiting block (11) slidably engaged with the spiral groove (701) provided on the movable ring (10), and an elastic component connected to the movable ring (10) provided on the limiting column (9); The elastic component comprises a first spring (12) and a second spring (13) which are sleeved on the limiting column (9), wherein two ends of the first spring (12) respectively abut against the movable ring (10) and the locking rod (5), and two ends of the second spring (13) respectively abut against the through groove (102) and the movable ring (10).

2. The electric auxiliary protection trolley switch cabinet according to claim 1 is characterized in that: The rotation limiting mechanism includes a slot (15) provided in the switch cabinet body (1) and connected to the through slot (102), a guide column (16) is provided in the slot (15), a movable block (17) slidably connected to the slide slot (201) is slidably mounted on the guide column (16), a third spring (18) abutting against the movable block (17) is sleeved on the guide column (16), and a limiting assembly connected to the rotating sleeve (7) is provided on the movable block (17).

3. The electric auxiliary protection trolley switch cabinet according to claim 2 is characterized in that: The limiting assembly comprises a connecting plate (19) mounted on the movable block (17) and slidably connected to the rotating sleeve (7); a limiting latch (20) is provided on the connecting plate (19); and a fixed latch (21) engaged with the limiting latch (20) is provided on the rotating sleeve (7).

4. The electric auxiliary protection trolley switch cabinet according to claim 3 is characterized in that: The electromagnetic control component comprises an iron core (23) installed in the through slot (102), a coil (24) is wound around the iron core (23), and a magnet block (22) matched with the iron core (23) is provided on the connecting plate (19).

5. A method for installing a trolley switch cabinet with electric auxiliary protection, using the trolley switch cabinet with electric auxiliary protection according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: Fit the cabinet door (2) onto the switch cabinet body (1), and drive the locking mechanism to move so that the locking mechanism moves to a position where it cooperates with the rotating sleeve (7); Step 2: The locking mechanism also drives the follower rotating mechanism to move, and under the action of the follower rotating mechanism, the rotating sleeve (7) rotates, so as to perform a locking action on the cabinet door (2) through the locking mechanism; Step 3: When the electromagnetic control component is powered on, the rotation limiting mechanism is controlled to move under the action of the electromagnetic control component to lock the angle of the rotating sleeve (7).

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