Vacuum circuit breaker handcart automatic control device and method

Abstract

The invention discloses a vacuum circuit breaker handcart automatic control device and method, the control device comprises a circuit breaker handcart, the bottom of the front side wall of the circuit breaker handcart is provided with a handcart crank hole, the front side end face of the handcart crank hole is fixedly provided with a mounting plate, and the upper and lower positions of the front side face of the mounting plate are symmetrically provided with lock catch assemblies; the lock catch assembly is used for clamping a rocking-in and rocking-out driver arranged on the front side of the mounting plate, and the rocking-in and rocking-out driver is connected with a handcart crank hole; the rear side of the circuit breaker handcart is provided with a moving contact used for being connected with the static contact. A control mainboard is arranged in the shake-in and shake-out driver, and the control mainboard controls operation of the whole device according to the farthest distance position, the moving and static contact attaching position, the complete joint position, the preset acceleration, the upper limit moving speed and the joint moving speed, which are input in advance, of the handcart. According to the invention, joint efficiency can be improved and power supply interruption time can be shortened; full-automatic operation can be achieved, and manual intervention is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit breaker trolley, in particular to an automatic control device and method for vacuum circuit breaker trolley. BACKGROUND

[0002] In the operation and maintenance of the power system, as a key equipment, the power cabinet bears important functions such as power distribution, control and protection. Among them, the circuit breaker trolley is one of the core components in the power cabinet, and the in-out operation is crucial for the maintenance and normal operation of the equipment. In the traditional way, the in-out operation of the circuit breaker trolley is mainly completed by manual operation of the crank. This operation method not only has high labor intensity and low efficiency, but also is difficult to accurately control the force and speed of in-out operation, which may cause damage to the equipment or affect the stable operation of the power system due to improper operation.

[0003] At the same time, during the operation, the operator cannot obtain the specific degree and state information of the in-out operation of the circuit breaker trolley in real time and accurately, and can only rely on experience and feeling to judge, which brings certain hidden dangers to the safe operation of the equipment.

[0004] The traditional vacuum circuit breaker trolley adopts manual shaking control when in-out control. However, the speed requirement when the moving contact and the static contact are engaged is relatively high. If the engagement speed is too fast, the bounce may occur, and then the moving and static contacts may generate arc, which may cause the surface of the contacts to be ablated for many times, resulting in increased contact resistance, heating, and even damage. If the engagement speed is too slow, the time for the air between the contacts to be broken down to generate arc will be prolonged, and the arc may ablate the surface of the contacts for a long time, resulting in increased contact resistance and significantly shortened electrical life, and even may cause the contacts to be welded and adhered. The traditional manual shaking control cannot accurately control the engagement speed, and thus may cause damage to the moving and static contacts. The same is true for the disconnection process.

[0005] In addition, the traditional operation method lacks remote control function, and when an emergency occurs or remote operation is needed, the circuit breaker trolley cannot be controlled in time and effectively, which is difficult to meet the demand of modern power system for intelligent and automatic management.

[0006] In addition, the traditional operation method lacks remote control function, and when an emergency occurs or remote operation is needed, the circuit breaker trolley cannot be controlled in time and effectively, which is difficult to meet the demand of modern power system for intelligent and automatic management. SUMMARY

[0007] To solve the problems in the prior art, the present application provides an automatic control device and method for vacuum circuit breaker trolley.

[0008] The present application adopts the following technical solutions: The application discloses a vacuum circuit breaker handcart automatic control device, which comprises a circuit breaker handcart, a handcart crank hole is arranged at the bottom of the front side wall of the circuit breaker handcart, an installation plate is fixedly arranged on the front side end face of the handcart crank hole, and lock catch assemblies are symmetrically arranged on the front side face of the installation plate. The lock catch assemblies are used for clamping a shake-in and shake-out driver arranged on the front side of the installation plate. A moving contact is arranged on the rear side of the circuit breaker handcart and used for being engaged with a static contact. The shake-in and shake-out driver is internally provided with a control mainboard, and the control mainboard controls the operation of the entire device according to the farthest distance position of the handcart, the static contact and the moving contact, the completely engaged position, the preset acceleration, the upper limit moving speed and the engaged moving speed.

[0009] According to the vacuum circuit breaker handcart automatic control device, the shake-in and shake-out driver comprises a frame. Holes are formed in the upper and lower portions of the frame and used for inserting the lock catch assemblies. The front side of the frame is fixedly connected with a shell, the front side end face of the shell is fixedly connected with an infrared remote control signal receiving module, the inner cavity of the shell is fixedly provided with a driving motor, the inner cavity of the shell is rotatably connected with a rotating shaft which is arranged in a front-rear arrangement mode, the output shaft of the driving motor is fixedly connected with a driving gear through a shaft coupling, the outer circle of the rotating shaft is fixedly connected with a driven gear which is in mesh transmission with the driving gear, the rear end of the rotating shaft is fixedly connected with a dynamic torque sensor, and the output end of the dynamic torque sensor is fixedly connected with a crank hole sleeve which penetrates through the frame and is coupled with the handcart crank hole.

[0010] According to the vacuum circuit breaker handcart automatic control device, the inner cavity bottom side wall of the shell is fixedly connected with a control mainboard and a storage battery, the control mainboard is internally provided with a 5G communication module, the signal transmission end of the infrared remote control signal receiving module is connected with the access end of the control mainboard, and the current monitoring end of the control mainboard is connected with two monitoring cables which penetrate into the circuit breaker handcart and are connected with the surface of the circuit breaker handcart.

[0011] According to the vacuum circuit breaker handcart automatic control device, the lock catch assemblies each comprise a fixed block. The center of the fixed block is provided with a bolt cavity, the top of the bolt cavity is provided with a handle, the bottom end of the handle is provided with a bolt, and the top outer circle of the bolt is sleeved with a cylindrical spring.

[0012] According to the vacuum circuit breaker handcart automatic control device, the inside of the handcart box door is provided with an opening for the monitoring cable to penetrate into the inside of the circuit breaker handcart.

[0013] The torque signal delivery end of the dynamic torque sensor is connected with the signal receiving end of the control mainboard, and the acceleration and speed of the circuit breaker handcart 1 are calculated.

[0014] The inside of the driving motor is programmed to control the forward and reverse rotation controlled by the control mainboard, and the driving motor is controlled to rotate forward or reversely to control the in-out movement of the circuit breaker handcart.

[0015] The bottom surface of the shell is provided with a charging port for charging the storage battery, and the infrared remote control signal receiving module is also provided with an infrared remote controller for remotely controlling the driving motor.

[0016] The second aspect of the present application discloses a vacuum circuit breaker handcart automatic control method, which is suitable for the vacuum circuit breaker handcart automatic control device and comprises the following steps: The farthest distance position, the moving contact and static contact adhering position and the complete joint position of the circuit breaker handcart are determined. The preset acceleration a, the upper limit moving speed Va and the joint moving speed Vb are preset. A preset position is set between the farthest distance position and the moving contact and static contact adhering position, and the circuit breaker handcart starts to decelerate when reaching the preset position. The circuit breaker handcart is controlled to first uniformly accelerate from the farthest distance position to the upper limit moving speed Va at the preset acceleration a, and then uniformly moves at the upper limit moving speed Va to the preset position. The circuit breaker handcart uniformly decelerates from the preset position to the moving contact and static contact adhering position at the preset acceleration a, and the speed of the circuit breaker handcart is reduced to the joint moving speed Vb when reaching the moving contact and static contact adhering position. The circuit breaker handcart uniformly moves at the joint moving speed Vb for a preset time t from the moving contact and static contact adhering position to reach the complete joint position and complete the joint.

[0017] According to the vacuum circuit breaker handcart automatic control method, the preset position is calculated by the following formula: ; The preset position is s away from the moving contact and static contact adhering position.

[0018] Compared with the prior art, the present application has at least the following advantages: The present application can improve the joint efficiency and shorten the power interruption time. The application uniformly reduces the speed to the joint moving speed, and then uniformly combines, reduces the impact force when the contact is contacted, and reduces the wear and positioning error; The formula parameters of the application can be adjusted, and are suitable for different types of trolleys and contact configurations, and improve the universality of the method; The application can realize full-automatic operation, and reduces manual intervention. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce and describe the drawings needed to be used in the description of the embodiments of the present application or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the automatic control device of the vacuum circuit breaker trolley. Figure 2 It is a schematic diagram of the circuit breaker trolley box door. Figure 3 It is a schematic diagram of the in-out rocker driver. Figure 4 It is a schematic diagram of the lock assembly. Figure 5 It is a schematic diagram of the internal structure of the in-out rocker driver.

[0021] APPENDIX Figure 1 APPENDIX Figure 5 The corresponding relationship of the components in the above-mentioned drawings is as follows: 1, circuit breaker trolley; 2, trolley box door; 3, in-out rocker driver; 3-1, mounting plate; 3-2, bolt; 3-3, jack; 3-4, monitoring cable; 3-5, shell; 3-6, infrared remote control signal receiving module; 3-7, rotating shaft; 3-8, driving motor; 3-9, driving gear; 3-10, dynamic torque sensor; 3-11, jack; 3-12, frame; 3-13, rocking handle hole sleeve; 3-14, driven gear; 3-15, battery; 3-16, control mainboard; 4, lock assembly; 4-1, fixed block; 4-2, latch; 4-3, latch cavity; 4-4, spring cavity; 4-5, handle; 4-6, cylindrical spring; 5, trolley rocking handle hole; 6, opening. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. The embodiments described in this application are merely some embodiments of this invention, and not all embodiments. Based on the spirit of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this invention.

[0023] In the description of this invention, it should be noted that the terms "front," "rear," "inner," "outer," "right," "left," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] Example 1: As Figures 1-5 As shown in the figure, this embodiment provides an automatic control device for a vacuum circuit breaker trolley, the specific structure of which is as follows: The circuit breaker truck 1 is the core component, and a truck door 2 is fixedly connected to its front side wall. A closing / closing indicator light is provided on the front side of the truck door 2 to visually display the closing or closing status of the circuit breaker truck. A truck crank hole 5 is provided at the bottom of the front side wall of the circuit breaker truck 1 for convenient manual operation. A mounting plate 3-1 is fixedly provided on the front end face of the truck crank hole 5, and locking assemblies 4 are symmetrically provided at the upper and lower positions on the front side of the mounting plate. The locking assembly 4 is used to engage the crank-in / crank-out driver 3 located on the front side of the mounting plate 3-1. The crank-in / crank-out driver 3 is connected to the handcart crank handle hole 5.

[0026] The circuit breaker trolley 1 is provided with a moving contact on the rear side for engaging with the stationary contact.

[0027] The rocker driver 3 is built-in control mainboard 3-16, control mainboard 3-16 according to the pre-input handcart's farthest distance position, dynamic static contact adhesion position, complete joint position, preset acceleration a, upper limit moving speed Va and joint moving speed Vb the entire device operation.

[0028] The mounting plate 3-1 is locked around the handcart handle hole 5 by four bolts 3-2, and the mounting plate 3-1 is provided with a socket 3-3 in the central position for the handle hole sleeve 3-13 to pass through, and four through holes are arranged at the four corners of the inside of the mounting plate 3-1.

[0029] The fixed block 4-1 is provided with a latch cavity 4-3 in the center, and the latch cavity 4-3 is provided with a spring cavity 4-4 inside, and the top of the latch cavity 4-3 is provided with a handle 4-5, and the bottom end of the handle 4-5 is provided with a latch 4-2, and the top outer circle of the latch 4-2 is sleeved with a cylindrical spring 4-6, and the cylindrical spring 4-6 is placed in the spring cavity 4-4. The rocker driver 3 includes a frame 3-12, the frame 3-12 is provided with a jack 3-11 for inserting the latch 4-2 on the upper and lower surfaces, and an opening is formed in the central position of the inside of the frame 3-12 for the handle hole sleeve 3-13 to pass through. The front side of the frame 3-12 is fixedly connected with a shell 3-5, and the front side of the shell 3-5 is fixedly connected with an infrared remote control signal receiving module 3-6 for receiving signals sent by an infrared remote controller. A driving motor 3-8 is fixedly arranged in the inner cavity of the shell 3-5, and a rotating shaft 3-7 is rotatably connected to the inner cavity of the shell 3-5 in a front-to-back arrangement, and the output shaft of the driving motor 3-8 is fixedly connected with a driving gear 3-9 through a shaft coupling, and the outer circle of the rotating shaft 3-7 is fixedly connected with a driven gear 3-14 which is in meshing transmission with the driving gear 3-9. The rear end of the rotating shaft 3-7 is fixedly connected with a dynamic torque sensor 3-10, and the torque signal transmission end of the dynamic torque sensor 3-10 is connected with the signal receiving end of the control mainboard 3-16, which is used for calculating the acceleration and speed of the circuit breaker handcart according to the torque signal, and the output end of the dynamic torque sensor 3-10 is fixedly connected with the handle hole sleeve 3-13 which penetrates the frame 3-12 and is coupled with the handcart handle hole 5.

[0030] The inside of the handcart box door 2 is provided with an opening 6 for the monitoring cable 3-4 to pass through into the inside of the circuit breaker handcart 1, and four threaded holes are arranged around the handcart handle hole 5 in the inside of the handcart box door 2.

[0031] The bottom side wall of the inner cavity of the shell 3-5 is fixed with a control mainboard 3-16 and a storage battery 3-15, and the control mainboard 3-16 is internally provided with a 5G communication module. The signal transmission end of an infrared remote control signal receiving module 3-6 is connected with the access end of the control mainboard 3-16. The current monitoring end of the control mainboard 3-16 is connected with two monitoring cables 3-4 which penetrate through the opening 6 on the handcart door 2 into the inside of the circuit breaker handcart 1 and are fixed with metal clamps for being connected with the surface iron of the circuit breaker handcart 1 at the end away from the control mainboard 3-16.

[0032] The inside of the driving motor 3-8 is internally programmed to control the forward and reverse rotation under the control of the control mainboard 3-16, so as to control the in-out movement of the circuit breaker handcart 1 through the control of the forward or reverse rotation.

[0033] The bottom surface of the shell 3-5 is provided with a charging port for charging the storage battery 3-15, and the infrared remote control signal receiving module 3-6 is also provided with an infrared remote controller for remotely controlling the working of the driving motor 3-8, wherein the 5G module inside the control mainboard 3-16 is used to communicate with a mobile phone or a computer through network signals, so as to realize the remote control of the working of the driving motor 3-8 by the mobile phone or the computer.

[0034] In the second embodiment, the application provides an automatic control method for a vacuum circuit breaker handcart, which sets a preset position between the farthest distance position of the handcart and the position where the moving contact and the static contact are attached, controls the circuit breaker handcart to quickly move from the farthest distance position to the preset position, then uniformly decelerate to the position where the moving contact and the static contact are attached to reach the joint movement speed, and finally uniformly move until complete combination. The running time is ensured to be the shortest, so as to improve the joint efficiency and power supply reliability.

[0035] The control method comprises the following steps: In step S210, the farthest distance position of the circuit breaker handcart, the position where the moving contact and the static contact are attached, and the complete combination position are determined.

[0036] The farthest distance position is the starting point of the handcart, the position where the moving contact and the static contact are attached is the initial contact point of the moving contact and the static contact, and the complete combination position is the final joint point of the moving contact and the static contact.

[0037] In step S220, a preset acceleration a, an upper limit movement speed Va and a joint movement speed Vb are set.

[0038] The acceleration a is the maximum acceleration which can ensure smooth running when the handcart accelerates and decelerates, can be obtained through experiments in a laboratory, the upper limit movement speed Va is the maximum speed which can ensure smooth running, can be obtained through experiments in a laboratory, and the joint movement speed Vb is the optimal joint speed, which can be obtained through experiments.

[0039] Step S230, a preset position is set between the farthest distance position and the moving contact and static contact abutting position, when the circuit breaker trolley reaches the preset position, the deceleration is started, through the calculation of the preset position, the shortest total running time can be ensured.

[0040] Step S240, the circuit breaker trolley is controlled to uniformly accelerate at an acceleration a to reach an upper limit moving speed Va from the farthest distance position, and then uniformly moves at the upper limit moving speed Va to the preset position.

[0041] Step S240, uniformly decelerates at the acceleration a from the preset position to the moving contact and static contact abutting position, and when reaching the moving contact and static contact abutting position, the speed of the circuit breaker trolley is reduced to the abutting moving speed Vb.

[0042] Step S250, uniformly moves at the abutting moving speed Vb from the moving contact and static contact abutting position for a preset time t to reach the completely abutting position, and the abutting is completed.

[0043] The farthest distance position, the moving contact and static contact abutting position and the completely abutting position of the trolley are manually measured and input, or are directly obtained according to the trolley parameters.

[0044] The preset time t is calculated according to the distance between the moving contact and static contact abutting position and the completely abutting position and the abutting moving speed Vb, and the completely abutting can be ensured by running for the preset time t, and the stroke switch required by the traditional electric trolley is saved, and the cost is saved.

[0045] Preferably but not limitedly, the preset position is calculated by the following formula: ; The preset position is s away from the moving contact and static contact abutting position.

[0046] When separation is required, the motor is controlled to reverse, and the above running operation is reversely performed, so that the rapid separation is realized.

[0047] The scheme can be applied to different types of vacuum circuit breaker trolleys, as long as the farthest distance position, the moving contact and static contact abutting position, the completely abutting position, the preset acceleration a, the upper limit moving speed Va and the abutting moving speed Vb of the trolley are obtained, the abutting in the shortest time is realized, the abutting efficiency is improved, and the power interruption time is shortened.

[0048] The present application uniformly decelerates to the abutting moving speed Vb and then uniformly abuts, reduces the impact force when the contacts contact, and reduces the wear and positioning error.

[0049] The formula parameters of the present application can be adjusted, and are suitable for different types of trolleys and contact configurations, and improve the generality of the method.

[0050] The present application can realize full-automatic running and reduce manual intervention.

[0051] The automatic control method of the vacuum circuit breaker handcart of the embodiment is specifically as follows: The installation and preparation stage. The mounting plate 3-1 is locked around the handcart crank hole 5 by four bolts 3-2, and an opening 6 and a threaded hole are reserved on the handcart box door 2. The lock catch assembly 4 is fixed on the front side surface of the mounting plate 3-1 in the upper and lower positions, and the frame 3-12 is clamped on the mounting plate 3-1 through the lock catch assembly 4, so that the insertion hole 3-11 on the upper and lower surfaces of the frame 3-12 is matched with the latch 4-2 of the lock catch assembly 4. Then, the shell 3-5 is fixed on the front side of the frame 3-12, and the drive motor 3-8, the rotating shaft 3-7, the drive gear 3-9, the driven gear 3-14 and the dynamic torque sensor 3-10 are installed in the shell 3-5. The output end of the dynamic torque sensor 3-10 at the rear end of the rotating shaft 3-7 is connected to the crank hole sleeve 3-13, the crank hole sleeve 3-13 penetrates through the frame 3-12 and is coupled with the handcart crank hole 5. The control mainboard 3-16 and the storage battery 3-15 are fixed on the bottom side wall in the inner cavity of the shell 3-5.

[0052] The drive control stage. The control mainboard 3-16 controls the forward and reverse rotation of the drive motor 3-8 according to the received instructions, the drive motor 3-8 drives the drive gear 3-9 to rotate through the shaft coupling, the drive gear 3-9 is meshed and driven with the driven gear 3-14, the rotating shaft 3-7 is driven to rotate, the crank hole sleeve 3-13 at the rear end of the rotating shaft 3-7 transmits the torque to the handcart crank hole 5, and the in-out of the circuit breaker handcart 1 is realized.

[0053] The torque monitoring stage. The dynamic torque sensor 3-10 monitors the rotating torque applied to the handcart crank hole 5 by the crank hole sleeve 3-13 in real time, and transmits the torque signal to the control mainboard 3-16. The control mainboard 3-16 calculates the acceleration and speed of the movement of the circuit breaker handcart according to the torque signal.

[0054] The remote control stage. The infrared remote control signal receiving module 3-6 sends signals to the infrared remote control through the infrared remote control, and then controls the drive motor 3-8 to work; the 5G module in the control mainboard 3-16 can also be used to connect the mobile phone or computer through network signals, so as to realize the remote control of the mobile phone or computer to the drive motor 3-8.

[0055] Example three: the vacuum circuit breaker handcart automatic control device of this embodiment is similar to the overall structure of example one, but there are differences in some details. The structure of the circuit breaker handcart 1 and the fixed handcart box door 2 on the front side is unchanged, and the closing / closing indication lamp and handcart handle hole 5 on the front side of the handcart box door 2 are in the same position. The mounting plate 3-1 of the in-out drive 3 is also locked around the handcart handle hole 5 by four bolts 3-2, and the design of the socket 3-3 and the through hole of the mounting plate 3-1 is consistent with example one. The structure and working principle of the lock catch assembly 4 are unchanged, and the clamping of the frame 3-12 and the mounting plate 3-1 is still realized through the fixed block 4-1, the handle 4-5, the latch 4-2 and the cylindrical spring 4-6. The design of the socket 3-11 and the opening of the frame 3-12 also remains the same. In the shell 3-5, the connection relationship of the drive motor 3-8, the rotating shaft 3-7, the drive gear 3-9, the driven gear 3-14 and the dynamic torque sensor 3-10 is unchanged. The difference is that the infrared remote control signal receiving module 3-6 is matched with an infrared remote controller with a display screen, which can display the working state of the drive motor 3-8 in real time, such as forward rotation, reverse rotation, rotation speed and other information. The 5G communication module built-in control mainboard 3-16 is optimized to make the network connection more stable, and the response speed of remote control through mobile phone or computer is faster. The metal clip design of the monitoring cable 3-4 is customized to make the contact with the bonding iron of the circuit breaker handcart 1 better. The control method of the vacuum circuit breaker handcart automatic control device of this embodiment is basically the same as that of example one, but in the remote control stage, due to the addition of the display screen of the infrared remote controller, the operator can more intuitively understand the working state of the drive motor 3-8, so as to control more accurately. At the same time, the optimization of the 5G communication module makes the instruction transmission more timely when remotely controlling the drive motor 3-8 through the mobile phone or computer, and the control effect is better.

[0056] Example four: the vacuum circuit breaker handcart automatic control device of this embodiment is further improved on the basis of example one. The structure of the circuit breaker handcart 1 and the handcart box door 2 remains unchanged, and the design of the handcart handle hole 5 and the closing / closing indication lamp is also the same. In the in-out drive 3, the mounting plate 3-1 is locked around the handcart handle hole 5 by four bolts 3-2, and the design of its socket 3-3 and through hole remains unchanged. The lock catch assembly 4 is upgraded, and a locking indication mark is added on the fixed block 4-1. When the latch 4-2 is inserted into the socket 3-11 to the right position, the locking indication mark will show the locking state, which is convenient for the operator to judge whether the frame 3-12 is installed firmly. In the shell 3-5, the drive motor 3-8 adopts an energy-saving motor, which reduces energy consumption while ensuring driving capacity. The connection relationship of the rotating shaft 3-7, the drive gear 3-9, the driven gear 3-14 and the dynamic torque sensor 3-10 remains unchanged, but the monitoring accuracy of the dynamic torque sensor 3-10 is further improved, which can more accurately feedback the rocking torque applied to the handcart handle hole 5 by the handle hole sleeve 3-13.

[0057] The control mainboard 3-16 is additionally provided with a local storage function in addition to the built-in 5G communication module, and can record working history data of the driving motor 3-8, such as working time, working frequency, torque change and the like, to facilitate subsequent maintenance and analysis. The metal clamp of the monitoring cable 3-4 adopts a new anti-loosening design to ensure stable connection with the bonding connection of the circuit breaker trolley 1. In the automatic control method of the vacuum circuit breaker trolley, in the installation and preparation stage, the operator can more accurately judge whether the frame 3-12 is installed in place by observing the locking indication mark on the locking buckle assembly 4. In the driving control stage, the energy-saving driving motor 3-8 is used to reduce energy consumption while ensuring the effect of the circuit breaker trolley 1 to be shaken in and out. In the remote control stage, the local storage function of the control mainboard 3-16 can record working data to provide a basis for subsequent maintenance and analysis.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit it. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and any modification or equivalent replacement without departing from the spirit and scope of the present application should be covered within the protection scope of the claims of the present application.

Claims

1. An automatic control device for a vacuum circuit breaker trolley, comprising a circuit breaker trolley (1), characterized in that: The circuit breaker trolley (1) has a trolley crank hole (5) at the bottom of the front side wall. A mounting plate (3-1) is fixed on the front end face of the trolley crank hole (5). Locking components (4) are symmetrically arranged on the upper and lower sides of the front side of the mounting plate (3-1). The locking assembly (4) is used to engage with the rocker-in and rocker-out driver (3) located on the front side of the mounting plate (3-1), and the rocker-in and rocker-out driver (3) is connected to the handcart crank hole (5); The circuit breaker trolley (1) is provided with a moving contact on the rear side for engaging with the stationary contact; The rocking in and rocking out driver (3) has a built-in control motherboard (3-16). The control motherboard (3-16) operates the entire device according to the pre-input farthest distance position of the handcart, the contact position of the moving and stationary contacts, the fully engaged position, the preset acceleration a, the upper limit moving speed Va and the engagement moving speed Vb.

2. The automatic control device for vacuum circuit breaker trolleys according to claim 1, characterized in that: The rocking-in and rocking-out driver (3) includes a frame (3-12); The frame (3-12) has holes (3-11) at the top and bottom for inserting the latch assembly (4). The front side of the frame (3-12) is fixedly connected to the outer shell (3-5); an infrared remote control signal receiving module (3-6) is fixedly connected to the front end face of the outer shell (3-5), a drive motor (3-8) is fixedly fixed to the front side of the inner cavity of the outer shell (3-5), a rotating shaft (3-7) is rotatably connected to the middle section of the inner cavity of the outer shell (3-5) in a front-rear arrangement, and a drive gear (3-9) is fixed to the output shaft of the drive motor (3-8) through a coupling, a driven gear (3-14) that meshes with the drive gear (3-9) is fixed to the outer ring of the rotating shaft (3-7), a dynamic torque sensor (3-10) is fixed to the rear end of the rotating shaft (3-7), and a crank hole sleeve (3-13) that penetrates the frame (3-12) and is coupled to the handcart crank hole (5) is fixedly connected to the output end of the dynamic torque sensor (3-10).

3. The automatic control device for vacuum circuit breaker trolleys according to claim 2, characterized in that: The control motherboard (3-16) and the battery (3-15) are fixed on the bottom side wall of the inner cavity of the outer shell (3-5). The control motherboard (3-16) has a built-in 5G communication module. The signal transmission end of the infrared remote control signal receiving module (3-6) is connected to the access end of the control motherboard (3-16). The current monitoring end of the control motherboard (3-16) is connected to two monitoring cables (3-4) that penetrate into the inside of the circuit breaker truck (1) and are grounded to the surface of the circuit breaker truck (1).

4. The automatic control device for vacuum circuit breaker trolleys according to claim 1, characterized in that: Each of the locking components (4) includes a fixing block (4-1); The fixing block (4-1) has a pin cavity (4-3) at its center. The pin cavity 4-3 has a spring cavity (4-4) inside. The top of the pin cavity (4-3) has a handle (4-5). The bottom of the handle (4-5) has a pin (4-2). A cylindrical spring (4-6) is fitted on the outer ring of the top of the pin (4-2). The cylindrical spring (4-6) is placed inside the spring cavity (4-4).

5. The automatic control device for vacuum circuit breaker trolleys according to claim 3, characterized in that: The circuit breaker truck (1) is fixedly connected to the front side wall of the truck door (2), and the inside of the truck door (2) is provided with an opening (6) for the monitoring cable (3-4) to pass through into the inside of the circuit breaker truck (1).

6. The automatic control device for vacuum circuit breaker trolleys according to claim 1, characterized in that: The torque signal transmission end of the dynamic torque sensor (3-10) is connected to the signal receiving end of the control motherboard (3-16) to calculate the acceleration and speed of the circuit breaker trolley (1) based on the torque signal.

7. The automatic control device for vacuum circuit breaker trolleys according to claim 1, characterized in that: The drive motor (3-8) has a program inside that controls the forward and reverse rotation of the circuit breaker trolley (1) by controlling the forward or reverse rotation.

8. The automatic control device for vacuum circuit breaker trolleys according to claim 1, characterized in that: The bottom surface of the outer casing (3-5) is provided with a charging port for charging the battery (3-15). The infrared remote control signal receiving module (3-6) is also equipped with an infrared remote control for remotely controlling the operation of the drive motor (3-8). The 5G module inside the control motherboard (3-16) is used to connect to a mobile phone or computer via network signal to realize remote control of the drive motor (3-8) by the mobile phone or computer.

9. An automatic control method for a vacuum circuit breaker trolley, characterized in that, The automatic control device for vacuum circuit breaker trolleys according to any one of claims 1-8, and the control method comprises the following steps: Determine the farthest position of the circuit breaker trolley, the contact position of the moving and stationary contacts, and the fully engaged position; Preset acceleration a, upper limit movement speed Va, and engagement movement speed Vb; A preset position is set between the farthest distance position and the contact position of the moving and stationary contacts, and the circuit breaker trolley begins to decelerate when it reaches the preset position. The circuit breaker trolley is controlled to accelerate uniformly from the farthest position to the upper limit speed Va with acceleration a, and then moves uniformly at the upper limit speed Va to the preset position. The circuit breaker trolley moves from the preset position with a uniform deceleration of a to the contact position of the moving and stationary contacts. When it reaches the contact position of the moving and stationary contacts, the speed of the circuit breaker trolley is reduced to the engagement movement speed Vb. From the contact position of the moving and stationary contacts, the moving and stationary contacts move at a constant speed of Vb for a preset time t until they reach the fully engaged position, thus completing the engagement.

10. The automatic control method for a vacuum circuit breaker trolley according to claim 9, characterized in that: The preset position is calculated using the following formula: ； The preset position is s away from the contact position of the moving and stationary contacts.

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