Handcart electric rocker of intelligent high-voltage switch cabinet and control method

Abstract

The invention relates to a high-voltage switch cabinet handcart electric crank which comprises a machine shell, one end of the machine shell is rotationally connected with a rotating shaft, the rotating shaft is provided with a mounting base used for mounting a lock head, a driving motor used for controlling the rotating shaft to rotate is arranged in the machine shell, and the driving motor is controlled through a control circuit. The control circuit comprises a main control module, a motor driving module, a current detection module, a storage module, a power supply module and a display module; the main control module is respectively connected with the current detection module, the storage module, the power supply module and the display module; the current detection module is used for detecting the real-time current of the driving motor in real time; the power module is used for supplying power to the system; the display module is used for displaying current information. In the operation process, the stress condition encountered in the operation process can be judged by detecting the magnitude of the current of the motor, so that the rotating speed of the motor is adjusted, the whole electric crank is in a controlled state in the operation process, and the risk of operation failure is reduced.

Description

Technical Field

[0001] The invention relates to the field of power supply and distribution equipment, and in particular to an electric crank handle of a high-voltage switch cabinet trolley and a control method thereof. Background Art

[0002] High-voltage switchgear refers to equipment used for switching, control or protection in power generation, transmission, distribution, energy conversion and consumption of power systems.

[0003] At present, in practical applications, the use of manual cranks to operate high-voltage switchgear as a trolley still accounts for a relatively high proportion. The manual crank is provided with a lock head that matches the lock core. The operator inserts the lock head of the manual crank into the lock port and matches it with the lock core, and then operates the high-voltage switchgear by shaking the manual crank. In this process, the manual crank is prone to detach from the lock core, affecting the normal operation of the high-voltage switchgear by the operator. Summary of the invention

[0004] In order to reduce the situation where a manual crank handle is separated from a lock core and improve the operational stability of a trolley during operation of a high-voltage switch cabinet trolley, the present invention provides an electric crank handle for a high-voltage switch cabinet trolley and a control method thereof.

[0005] The present invention provides an electric crank handle and control method for a high-voltage switch cabinet trolley, which adopts the following technical solutions: An electric crank of a high-voltage switch cabinet trolley comprises a casing, one end of which is rotatably connected to a rotating shaft, a mounting seat for mounting a lock is provided on the rotating shaft, a driving motor for controlling the rotation of the rotating shaft is provided in the casing, the driving motor is controlled by a control circuit, the control circuit comprises a main control module, a motor driving module, a current detection module, a storage module, a power supply module and a display module; the main control module is respectively connected to the current detection module, the storage module, the power supply module and the display module, the current detection module is used to detect the real-time current of the driving motor in real time; the power supply module is used to power the system; the display module is used to display current information.

[0006] Optionally, the casing is provided with an on-off switch for controlling the opening and closing of the driving motor, the casing is provided with a limit seat near the mounting seat, the limit seat is used to be inserted into the lock mouth, a plurality of support plates for supporting the inner wall of the lock mouth are movably provided on the outer wall of the limit seat, and the casing is provided with a control component for controlling the movement of the support plate; the control component includes a slide seat slidably arranged on the casing, a handle is threadedly provided on the casing, the handle is rotatably connected to the slide seat, the slide seat is hinged with a support rod corresponding to each position of the support plate, the support plate is installed on the support rod, a push rod is hinged on the support rod, and the push rod is hinged on the limit seat.

[0007] Optionally, the support rod includes a first connecting rod and a second connecting rod hinged on the sliding seat, the push rod is hinged on the first connecting rod, the first connecting rod and the second connecting rod are both hinged on the support plate, the first connecting rod and the second connecting rod are parallel to each other, and the spacing between the hinge axes at both ends of the first connecting rod is the same as the spacing between the hinge axes at both ends of the second connecting rod.

[0008] Optionally, one end of the push rod is hinged at a middle position of the hinge axes at both ends of the first connecting rod, and the distance between the hinge axes at both ends of the push rod is half of the distance between the hinge axes at both ends of the first connecting rod.

[0009] Optionally, a spline sleeve is provided at one end of the mounting seat, and a first spline shaft for cooperating with the spline sleeve is fixedly connected to one end of the rotating shaft; a movable seat is slidably provided in the casing, the mounting seat is rotatably connected to the movable seat, the casing is provided with a first spring for pushing the movable seat close to the driving motor, a support rod is fixedly connected to the movable seat, the casing is provided with a sliding groove for the support rod to slide, a flip frame is fixedly hinged on the casing, and the flip frame is provided with a long groove for the support rod to pass through.

[0010] Optionally, a second spline shaft is fixedly connected to one end of the mounting seat facing away from the rotating shaft, a spline sleeve for cooperating with the second spline shaft is provided on the lock head, a hook is hinged on the mounting seat, a ring groove for the hook to be engaged is provided on the outer peripheral wall of the lock head, and a control unit for controlling the flipping of the hook is provided on the casing.

[0011] Optionally, the control unit includes an inclined plate arranged on the hook, a push block for pushing the inclined plate is arranged in the housing, the mounting seat is fixedly connected with elastic sheets at the positions corresponding to the two hooks, and a limiting rod for pushing the hook to abut against the mounting seat is fixedly connected to the elastic sheet.

[0012] Optionally, a groove is formed at one end of the second spline shaft facing the lock head, a second spring is arranged in the groove, and a limiting bolt for tightening the second spring is threadedly connected to the bottom wall of the groove.

[0013] Optionally, an electromagnet is fixedly connected to the casing, a limit slot is provided on the opening and closing switch, a positioning pin is provided in the limit slot, and when the electromagnet is energized, the electromagnet absorbs the positioning pin and the positioning pin is disengaged from the limit slot; when the electromagnet is de-energized, the positioning pin extends into the limit slot.

[0014] The present invention also discloses a control method for an electric crank of a high-voltage switch cabinet trolley, comprising the following steps: Upon receiving the operation information, the control circuit unlocks the on / off switch; When the opening and closing switch is pressed, the drive motor is energized, and the drive motor drives the lock to rotate; The main control module determines the force conditions encountered during operation based on the detected current data and adjusts the speed of the drive motor.

[0015] In summary, the present invention includes at least one of the following beneficial technical effects: 1. During the operation of the high-voltage switch cabinet trolley electric crank of the present invention, the force conditions encountered during the operation can be determined by detecting the magnitude of the motor current, thereby adjusting the speed of the motor, so that the entire electric crank is in a controlled state during the operation, reducing the risk of operation failure.

[0016] 2. By setting the support plate, the end of the housing close to the lock head is inserted into the lock port during operation, so that the lock head can cooperate with the lock core. Then the operator turns the handle to drive each support plate to open and support it on the inner wall of the lock port, so that the relative position of the housing and the lock port is fixed, which can further reduce the slippage of the lock head and the lock core, and is conducive to improving the stability of the trolley operation; 3. By setting an electromagnet and a positioning pin, the electromagnet controls the positioning pin to insert into or out of the limit slot of the on-off switch, so as to achieve a limiting effect on the on-off switch, which can reduce the situation where the operator accidentally touches the on-off switch; 4. When installing the lock, the lock is inserted from the end of the housing close to the limit seat, so that the second spline shaft and the spline groove cooperate with each other. The operator continues to push the lock toward the housing, and the lock pushes the inclined plate, so that the two hooks overcome the elastic force of the elastic sheet and flip back and forth, until the lock moves to the ring groove and the hook part of the hook is aligned, and the lock is inserted into the ring groove under the elastic force of the elastic sheet, so that the lock can be quickly installed; 5. When removing the lock, it is necessary to rotate the flip frame to drive the moving seat to move, and then drive the mounting seat to move toward the lock. During this process, the push block pushes the inclined plate, causing the two hooks to flip back to back, releasing the limiting effect of the hooks on the ring groove. Under the elastic force of the second spring, the lock is pushed out of the casing, allowing the lock to be quickly disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present invention.

[0018] Figure 2 It is a cross-sectional view of an electromagnet according to Embodiment 1 of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the mounting base used to embody the first embodiment of the present invention.

[0020] Figure 4 It is a schematic structural diagram of a turning frame according to Embodiment 1 of the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the hook according to the first embodiment of the present invention.

[0022] Figure 6 yes Figure 2 Enlarged schematic diagram of part A Figure 7 It is a control circuit block diagram of the present invention.

[0023] Figure 8 The invention discloses a flowchart of starting and stopping a driving motor when the electric crank of a high-voltage switch cabinet trolley is actuated.

[0024] Description of reference numerals: 1, housing; 11, handle; 12, on / off switch; 13, cavity; 14, rotating shaft; 15, driving motor; 2, mounting seat; 21, first spline shaft; 22, spline sleeve; 23, moving seat; 24, support rod; 25, slide groove; 26, flip frame; 27, long groove; 28, first spring; 3, second spline shaft; 31, spline groove; 32, second spring; 33, locking bolt; 4, hook; 41, ring slot; 43, receiving slot; 44, elastic sheet; 45, limiting rod; 46, inclined plate; 47, push block; 5, limiting seat; 51, support plate; 52, control assembly; 53, slide seat; 54, support rod; 55, first connecting rod; 56, second connecting rod; 57, push rod; 58, handle; 6, elastic pad; 62, anti-slip pattern; 7, electromagnet; 71, limiting slot; 72, positioning pin; 8, lock head; 81, lock core; 82, lock mouth. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-8 The present invention is described in further detail.

[0026] Example 1 The embodiment of the present invention discloses an electric crank handle for a high-voltage switch cabinet trolley. Figure 1 , Figure 2 as well as Figure 3 The electric crank of the high-voltage switch cabinet trolley includes a housing 1, a cavity 13 is provided in the housing 1, the housing 1 is rotatably connected with a shaft 14 in the cavity 13, and the housing 1 is fixedly connected with a drive motor 15 for transmission connection with the shaft 14 in the cavity 13. The drive motor 15 is controlled by a control circuit. In this embodiment, the control circuit includes a main control module, a motor drive module, a current detection module, a storage module, a power module and a display module. The main control module is connected to the current detection module, the storage module, the power module and the display module respectively. The current detection module is used to detect the real-time current of the drive motor 15 in real time; the power module is used to power the system; and the display module is used to display current information.

[0027] The other end of the rotating shaft 14 is drivingly connected to a mounting base 2, and the mounting base 2 is used to connect the lock head 8. A handle 11 is fixedly connected to the housing 1, and an on-off switch 12 for controlling the on-off of the driving motor 15 is provided on the handle 11.

[0028] like Figure 3 and Figure 4 , a spline sleeve 22 is fixedly connected to one end of the mounting seat 2 facing the rotating shaft 14, and a first spline shaft 21 for cooperating with the spline sleeve 22 is coaxially fixedly connected to the end of the rotating shaft 14. A moving seat 23 is provided in the casing 1 for axial sliding along the rotating shaft 14, and the mounting seat 2 is rotatably connected to the moving seat 23. A plurality of support rods 24 are fixedly connected to the mounting seat 2, and a slide groove 25 for the support rods 24 to pass through is provided on the casing 1. The moving seat 23 slides in the casing 1, so that the support rods 24 slide in the slide groove 25. The length of the slide groove 25 limits the sliding distance of the moving seat 23 in the casing 1, and the spline sleeve 22 and the first spline shaft 21 are always in a transmission matching state during the sliding process of the moving seat 23. A first spring 28 is connected between the casing 1 and the support rod 24, and the first spring 28 is used to push the moving seat 23 to move to a side close to the slide groove 25.

[0029] A flip frame 26 is hingedly connected to the outside of the housing 1. A long slot 27 is provided on the flip frame 26 for the support rod 24 to pass through. The operator controls the flip frame 26 to flip, and the long slot 27 pushes the support rod 24 to control the moving seat 23 to move in the housing 1. In the initial state, the first spring 28 pushes the support rod 24 to abut against one end of the long slot 27 close to the drive motor 15, and the flip frame 26 is tilted toward the drive motor 15.

[0030] like Figure 3 and Figure 5 The end of the mounting seat 2 away from the rotating shaft 14 is fixedly connected to the second spline shaft 3, and the lock head 8 is provided with a spline groove 31 for cooperating with the second spline shaft 3.

[0031] like Figure 3 and Figure 6 A groove is formed at one end of the second spline shaft 3 away from the mounting seat 2, a second spring 32 is arranged in the groove, a locking bolt 33 is threadedly connected to the bottom wall of the groove, a horizontal plate is arranged on the second spring 32, the locking bolt 33 passes through the horizontal plate, and the horizontal plate presses the second spring 32. One end of the second spring 32 extends out of the groove and is used to push the lock head 8 away from the mounting seat 2.

[0032] An annular groove 41 is formed on the outer peripheral wall of the lock head 8, and two hooks 4 for inserting into the annular groove 41 are hingedly connected to the mounting seat 2, and the two hooks 4 are symmetrically arranged about the mounting seat 2. An accommodating groove 43 for accommodating the hook 4 is formed on the mounting seat, and an elastic sheet 44 is fixedly connected to the mounting seat 2, and a limiting rod 45 for pressing the hook 4 into the accommodating groove 43 is fixedly connected to the elastic sheet 44.

[0033] The housing 1 is provided with a control unit for controlling the flipping of the hook 4. The control unit includes an inclined plate 46, which is provided at one end of the hook 4 facing the second spline shaft 3. The end of the inclined plate 46 close to the second spline shaft 3 is inclined in a direction away from the mounting seat 2, and the end of the lock head 8 close to the spline groove 31 is provided with an oblique chamfer. An annular push block 47 is fixedly connected to the end of the mounting seat 2 away from the drive motor 15 in the housing 1. When the moving seat 23 moves in a direction away from the drive motor 15, the push block 47 can push the inclined plate 46, so that the two hooks 4 flip back to back and release the clamping effect between the hook 4 and the annular groove 41. The lock head 8 can be moved away from the mounting seat 2 under the action of the second spring 32, so that the operator can remove the lock head 8.

[0034] like Figure 4 and Figure 6 , a ring-shaped limit seat 5 is fixedly connected to one end of the housing 1 close to the mounting seat 2, and the limit seat 5 is used to be inserted into the lock 82. A plurality of support plates 51 are movably arranged on the outer peripheral wall of the limit seat 5, and the plurality of support plates 51 are evenly arranged along the circumferential direction of the limit seat 5. The housing 1 is provided with a control assembly 52 for controlling the plurality of support plates 51 to move closer to each other and further away from each other. The control assembly 52 includes a slide seat 53 slidably arranged on the outer wall of the housing 1, and a support rod 54 is hinged on the slide seat 53. The support rod 54 includes a first connecting rod 55 and a second connecting rod 56 hinged on the slide seat 53, and the ends of the first connecting rod 55 and the second connecting rod 56 away from the slide seat 53 are both hinged on the corresponding support plate 51. The first connecting rod 55 and the second connecting rod 56 are parallel to each other, and the spacing between the hinge axes at both ends of the first connecting rod 55 is the same as the spacing between the hinge axes at both ends of the second connecting rod 56. The first connecting rod 55 is hinged with a push rod 57 at the middle position of the hinge axis at both ends, and one end of the push rod 57 away from the first connecting rod 55 is hinged on the limit seat 5. The distance between the hinge axes at both ends of the push rod 57 is half of the distance between the hinge axes at both ends of the first connecting rod 55.

[0035] A handle 58 is threadedly sleeved on the housing 1, and the handle 58 is rotatably connected to the slide 53. The operator drives the slide 53 to slide on the housing 1 by rotating the handle 58, and the movement of the slide 53 drives the first connecting rod 55 and the second connecting rod 56 to flip, thereby driving each support plate 51 to move closer to or farther away from each other. Since the distance between the hinge axes at both ends of the push rod 57 is half of the distance between the hinge axes at both ends of the first connecting rod 55, and one end of the push rod 57 is hinged at the middle position of the hinge axes at both ends of the first connecting rod 55, when the support plates 51 move closer to or farther away from each other, each support plate 51 maintains the same position along the axis direction of the limit seat 5.

[0036] The opposite side of each support plate 51 is fixedly connected to the elastic pad 6 , and the side of the elastic pad 6 facing away from the support plate 51 is provided with an anti-slip pattern 62 for abutting against the inner wall of the locking opening 82 .

[0037] like Figure 2 and Figure 4 , an electromagnet 7 is arranged outside the handle 11, and the electromagnet 7 is also controlled by the control circuit, that is, the electromagnet 7 can receive the instruction from the main control module to control its on and off. A limit slot 71 is arranged on the on-off switch 12, and a positioning pin 72 is arranged in the limit slot 71, and a spring is connected to the end of the positioning pin 72 close to the electromagnet 7. When the electromagnet 7 is energized, the electromagnet 7 absorbs the positioning pin 72, and the positioning pin 72 overcomes the elastic force of the spring and approaches the electromagnet 7, at which time the positioning pin 72 is separated from the limit slot 71; when the electromagnet 7 loses power, the positioning pin 72 moves toward the limit slot 71 under the action of the spring rebound force, and extends into the limit slot 71.

[0038] The button of the on / off switch 12 can control the start of the drive motor 15 only when it is pressed. When the positioning pin 72 extends into the limit groove 71, it can limit the pressing of the button of the on / off switch 12. At this time, the drive motor 15 cannot move.

[0039] When the high-voltage switch cabinet trolley electric handcart of this embodiment is in use, the operator needs to install the lock 8 before using the device. The lock 8 is inserted from the end of the casing 1 close to the limit seat 5, so that the second spline shaft 3 and the spline groove 31 cooperate with each other. The operator continues to push the lock 8 toward the inside of the casing 1, and the lock 8 pushes the inclined plate 46, so that the two hooks 4 overcome the elastic force of the elastic sheet 44 and flip back and forth, until the lock 8 moves to the annular groove 41 and is aligned with the hook part of the hook 4, and the lock 8 is inserted into the annular groove 41 under the elastic force of the elastic sheet 44, so as to achieve the fixing effect of the lock 8.

[0040] When operating the high-voltage switch cabinet, the operator inserts the end of the casing 1 close to the lock head 8 into the lock port 82, so that the lock head 8 can cooperate with the lock core 81 in the lock port 82, and then the operator drives the various support plates 51 to move away from each other by rotating the handle 58, and support them on the inner wall of the lock port 82, so as to fix the relative position of the casing 1 and the lock port 82, reduce the slippage of the lock head 8 and the lock core 81, and help improve the operational stability.

[0041] The shapes of the lock cores 81 of different high-voltage switch cabinets are different, and it is necessary to replace the appropriate lock head 8. When replacing the lock head 8, the operator controls the flip frame 26 to flip, drive the moving seat 23 to move, and then drive the mounting seat 2 to move toward the lock head 8. During this process, the push block 47 pushes the inclined plate 46, so that the two hooks 4 flip back to back, releasing the limiting effect of the hooks 4 on the annular groove 41. Under the elastic force of the second spring 32, the lock head 8 is pushed out of the casing 1, so that the operator can remove the lock head 8. After the disassembly is completed, the operator installs a suitable lock head 8.

[0042] Example 2 This embodiment discloses a control method for an electric crank of a high-voltage switch cabinet trolley. The control method is a control method for operating the electric crank of a high-voltage switch cabinet trolley after inserting a lock head 8 into a lock port 82. The method comprises the following steps: After receiving the action instruction, the electric crank of the high-voltage switch cabinet trolley first determines whether the switch cabinet meets the five-protection operation conditions. If the basic operation conditions cannot be met, the switch lock will not be operated, and the information will be fed back to the operator; when the switch cabinet meets the operation conditions, the switch cabinet opening and closing operations are performed. At this time, the main control module of the electric crank of the high-voltage switch cabinet trolley controls the electromagnet 7 to be turned on. After the electromagnet 7 is energized, the positioning pin 72 is adsorbed, and the positioning pin 72 is disengaged from the limit groove 71 on the opening and closing switch 12. At this time, the opening and closing switch 12 is pressed, the drive motor 15 is turned on, and the drive motor 15 rotates, driving the lock cylinder 81 to rotate.

[0043] During the rotation process, the drive motor 15 first enters the acceleration stage, then enters the full speed stage, and finally enters the deceleration stage in order not to damage the mechanical structure of the high-voltage switch cabinet. During the whole process, the current detection module of the control circuit will detect the current of the drive motor 15 in real time and feed it back to the main control module. The main control module will judge the force conditions encountered during the operation according to the detected current of the drive motor 15, so as to adjust the speed of the drive motor, so that the entire electric crank is in a controlled state during the operation, reducing the risk of operation failure. The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An electric crank for a high-voltage switch cabinet trolley, characterized in that: The invention comprises a housing (1), one end of which is rotatably connected to a rotating shaft (14), a mounting seat (2) for mounting a lock (8) being arranged on the rotating shaft (14), a driving motor (15) for controlling the rotation of the rotating shaft (14) being arranged inside the housing (1), the driving motor (15) being controlled by a control circuit, the control circuit comprising a main control module, a motor driving module, a current detection module, a storage module, a power supply module and a display module; the main control module is respectively connected to the current detection module, the storage module, the power supply module and the display module, the current detection module is used to detect the real-time current of the driving motor in real time; the power supply module is used to supply power to the system; and the display module is used to display current information.

2. The electric crank handle of a high-voltage switch cabinet trolley according to claim 1, characterized in that: The housing (1) is provided with an on / off switch (12) for controlling the on / off of the drive motor (15); a limit seat (5) is provided on the housing (1) near the mounting seat (2); the limit seat (5) is used to be inserted into the lock opening (82); a plurality of support plates (51) for supporting the inner wall of the lock opening (82) are movably provided on the outer wall of the limit seat (5); and a control component (52) for controlling the movement of the support plate (51) is provided on the housing (1); the control component (5 2) comprising a slide seat (53) slidably arranged on the housing (1), a handle (58) being threadedly sleeved on the housing (1), the handle (58) being rotatably connected to the slide seat (53), the slide seat (53) being hingedly connected to a support rod (54) at a position corresponding to each of the support plates (51), the support plates (51) being mounted on the support rod (54), a push rod (57) being hingedly connected to the support rod (54), and the push rod (57) being hingedly connected to the limit seat (5).

3. The electric crank handle of a high-voltage switch cabinet trolley according to claim 2, characterized in that: The support rod (54) comprises a first connecting rod (55) and a second connecting rod (56) which are hinged on the sliding seat (53); the push rod (57) is hinged on the first connecting rod (55); the first connecting rod (55) and the second connecting rod (56) are both hinged on the support plate (51); the first connecting rod (55) and the second connecting rod (56) are parallel to each other; and the distance between the hinge axes at both ends of the first connecting rod (55) is the same as the distance between the hinge axes at both ends of the second connecting rod (56).

4. The electric crank handle of a high-voltage switch cabinet trolley according to claim 3, characterized in that: One end of the push rod (57) is hinged to the middle position of the hinge axes at both ends of the first connecting rod (55), and the distance between the hinge axes at both ends of the push rod (57) is half of the distance between the hinge axes at both ends of the first connecting rod (55).

5. The electric crank handle of a high-voltage switch cabinet trolley according to claim 1, characterized in that: A spline sleeve (22) is provided at one end of the mounting seat (2); a first spline shaft (21) for cooperating with the spline sleeve (22) is fixedly connected to one end of the rotating shaft (14); a movable seat (23) is slidably provided in the housing (1); the mounting seat (2) is rotatably connected to the movable seat (23); a first spring (28) for pushing the movable seat (23) close to the driving motor (15) is provided on the housing (1); a support rod (24) is fixedly connected to the movable seat (23); a slide groove (25) for sliding the support rod (24) is provided on the housing (1); a flip frame (26) is fixedly hinged on the housing (1); and a long groove (27) for the support rod (24) to pass through is provided on the flip frame (26).

6. The electric crank handle of a high-voltage switch cabinet trolley according to claim 1, characterized in that: The mounting seat (2) is fixedly connected to an end thereof which faces away from the rotating shaft (14) with a second spline shaft (3); the lock head (8) is provided with a spline sleeve (22) for cooperating with the second spline shaft (3); a hook (4) is hingedly connected to the mounting seat (2); a ring groove (41) for engaging the hook (4) is provided on the outer peripheral wall of the lock head (8); and a control unit for controlling the flipping of the hook (4) is provided on the housing (1).

7. The electric crank handle of a high-voltage switch cabinet trolley according to claim 6, characterized in that: The control unit comprises an inclined plate (46) arranged on the hook (4), a push block (47) for pushing the inclined plate (46) is arranged in the housing (1), the mounting seat (2) is fixedly connected to positions corresponding to the two hooks (4) with elastic sheets (44), and the elastic sheet (44) is fixedly connected to a limit rod (45) for pushing the hook (4) to abut against the mounting seat (2).

8. The electric crank handle of a high-voltage switch cabinet trolley according to claim 6, characterized in that: A groove is formed at one end of the second spline shaft (3) facing the lock head (8), a second spring (32) is arranged in the groove of the second spline shaft (3), and a limit bolt for tightening the second spring (32) is threadedly connected to the bottom wall of the groove.

9. The electric crank handle of a high-voltage switch cabinet trolley according to claim 1, characterized in that: The housing (1) is fixedly connected to an electromagnet (7), the on-off switch (12) is provided with a limit slot (71), a positioning pin (72) is provided in the limit slot (71), when the electromagnet (7) is energized, the electromagnet (7) absorbs the positioning pin (72), and the positioning pin (72) is separated from the limit slot (71); when the electromagnet (7) is de-energized, the positioning pin (72) extends into the limit slot (71).

10. A method for controlling an electric crank of a high-voltage switch cabinet trolley, using an electric crank of a high-voltage switch cabinet trolley as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Upon receiving the operation information, the control circuit unlocks the on / off switch (12); When the opening and closing switch (12) is pressed, the driving motor (15) is energized, and the driving motor (15) drives the lock (8) to rotate; The main control module determines the force conditions encountered during operation based on the detected current data and adjusts the rotation speed of the drive motor (15).

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