Macro-adjustment multi-path arc generation control device

Abstract

The invention provides a multi-path electric arc generation control device for micro-distance adjustment, which integrates two groups of electric arc discharge devices, and each group of electric arc discharge devices are distributed at 120 degrees along the circumference. The device provides two technical schemes of microspur (micron-level) radial displacement. According to the first scheme, a permanent magnet direct current brush motor drives a turbine worm reducer and a secondary reducer to achieve a large reduction ratio (igt); 1000) of the vehicle (1); according to the second scheme, the permanent magnet direct current brush motor drives the seven-stage parallel shaft speed reducer to achieve the large reduction ratio (igt). 1000) so as to drive the screw rod nut mechanism to realize the macro radial movement of the movable pole. The rotary base plate and components on the rotary base plate are driven by the dual-drive motor through the main speed reducer to achieve accurate position or speed control in the circumferential direction, and finally the continuous arc discharge phenomenon is generated at the low-voltage alternating current 220 Vac. The Z-axis lifting device achieves height adjustment of the miniature telescopic push rod device in the Z-axis direction and adapts to the situation that the pole columns cannot be aligned due to machining and assembling errors.

Description

Technical Field

[0001] The invention belongs to the field of low-voltage distribution network and is an arc generating device for simulating single-phase or multi-phase series arc faults and switching one group of three phases to another group of three phases, and specifically relates to a multi-channel arc generating control device with micro-adjustment. Background Art

[0002] The research on arc generating devices is one of the important branches in the field of low-voltage distribution network power fault research. Most arc generating devices on the market are manually rotating rollers or using stepping or DC motors to move the nut in the screw nut mechanism to control the distance between the two electrodes of the arc. In this case, only one degree of freedom can be achieved, and it is impossible to achieve multi-phase series arc faults, fault point location, control the angle and distance between poles, the shape of two poles, and switch one set of three phases to another set of three phases. On the other hand, the accuracy of the micro-adjustment between the arc poles is lacking.

[0003] The publication number is CN118731574A, and its name is a multi-channel arc drawing and arc extinguishing simulation device. The invention proposes a multi-channel arc device, which solves the problem of whether there is a multi-channel arc device or not. However, there are also problems such as the inability to continuously generate arc drawing, the telescopic push rod driving the electrode step length is too large, and the position in the Z-axis direction cannot be adjusted. Summary of the invention

[0004] In order to solve the above technical problems, the present invention is based on the literature of the background technology, and the technical solution adopted by the present invention is: a multi-channel arc generation control device with micro-pitch adjustment, the device integrates two groups of arc drawing devices: a first group of arc drawing devices and a second group of arc drawing devices and a rotating substrate, the first group of arc drawing devices and the second group of arc drawing devices are located on the rotating substrate, and each group of arc drawing devices is distributed along the circumference of the rotating substrate by 120 degrees; the first group of arc drawing devices adopts a permanent magnet DC brush motor module to drive a worm reducer and a secondary reducer to achieve large reduction ratio deceleration, drive a lead screw nut mechanism, and achieve micron-level micro radial displacement of the moving pole, wherein the reduction ratio i>1000; the second group of arc drawing devices is driven by a permanent magnet DC brush motor module to drive the lead screw nut mechanism through a seven-stage parallel shaft reducer to achieve micro radial displacement, the second group of arc drawing devices also has a Z-axis lifting device to achieve height adjustment of the moving pole, and the deceleration rotation of the rotating substrate is driven by a dual-motor drive main reducer composed of a first pinion drive motor and a second pinion drive motor.

[0005] Beneficial effects of the present invention: Through the combination of the above two technical solutions, permanent magnet DC brushed motor + large reducer ratio reducer (the former: worm gear + two-stage reducer; the latter: seven-stage reducer), the micron-level micro displacement of the moving pole is achieved, and continuous arcing is achieved at low-voltage AC 220Vac. The Z-axis lifting device realizes the height adjustment of the micro telescopic push rod device along the Z-axis direction to adapt to the situation where the pole cannot be aligned due to processing and assembly errors.

[0006] The first pinion drive motor adopts a permanent magnet DC brushless servo motor with position control including position sensor and limit switch to achieve precise position of the rotating substrate and the components thereon; the second pinion drive motor adopts a permanent magnet DC brush motor with PWM stepless speed regulation to achieve precise speed control of the rotating substrate and the components thereon. The two control modes are convenient for debugging and adaptable to more working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 The three-dimensional image of the multi-channel arc generation control device with micro-adjustment of the present invention Figure 1 ; Figure 2 The three-dimensional image of the multi-channel arc generation control device with micro-adjustment of the present invention Figure 2 ; Figure 3 The first arc drawing device of the present invention is a three-dimensional image Figure 1 ; Figure 4 The first arc drawing device of the present invention is a three-dimensional image Figure 2 ; Figure 5 This is a schematic diagram of the first permanent magnet DC brushed motor module (with integrated worm gear and two-stage parallel shaft reducer) of the present invention; Figure 6 A three-dimensional view of a second arc drawing device of the present invention; Figure 7 This is a schematic diagram of the second permanent magnet DC brushed motor module (with an integrated seven-stage parallel shaft reducer) of the present invention; Among them, 1 is the first permanent magnet DC brush motor controller, 2 is the second permanent magnet DC brush motor controller, 3 is the battery, 4a is the first pinion, 4b is the second pinion, 5 is the large gear, 6 is the rotating base plate, 7 is the first pinion drive motor, 8 is the second pinion drive motor, 9a~9f are the first support base plate~the sixth support base plate, 10 is the stationary base plate, 11 is the first screw, 12 is the second screw, 13 is the third screw, 14 is the first epoxy flange, 15 is the first static pole, 16 is the fourth screw, 17 is the second static pole, 18 is the second epoxy flange, and 19 is the limit switch.

[0008] 100 is a first arc drawing device, 101 is a first permanent magnet DC brush motor module, 101a is a first permanent magnet DC brush motor, 101b is a worm gear reducer, 101c is a two-stage reducer, 102 is a base, 103 is a first epoxy substrate, 104 is a second epoxy substrate, 105 is a guide rod, 106 is a third epoxy substrate, 107 is a fourth epoxy substrate, 108 is a first screw rod, 109 is a first T-nut, 110 is a first moving pole, 111 is a fifth screw, 112 is a T-clamp, 113 is a first coupling, 114 is a sixth screw, 115 is a nut, 116 is a seventh screw, 117 is an eighth screw, and 118 is a ninth screw.

[0009] 200 is a second arc drawing device, 200a is a miniature telescopic push rod device, 200b is a Z-axis lifting device, 201 is a second moving pole, 202 is a second coupling, 203 is a second permanent magnet DC brush motor module, 203a is a second permanent magnet DC brush motor, 203b is a seven-stage parallel shaft reducer, 203c is a second lead screw, 203d is a second T-nut, 204 is the tenth screw, 205 is a locking nut, 206 is a micrometer head, 207 is a ratchet, 208 is the eleventh screw, 209 is a guide rail, and 210 is a supporting top plate.

[0010] Similarly, 300 is a third arc drawing device, 400 is a fourth arc drawing device, 500 is a fifth arc drawing device, and 600 is a sixth arc drawing device. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other. To achieve the above-mentioned purpose, the present invention adopts the following technical scheme.

[0012] The present invention is described in detail below in conjunction with the accompanying drawings.

[0013] The present invention proposes a multi-channel arc generation control device with micro-adjustment, such as Figure 1, including two groups of arc drawing devices, namely a first group of arc drawing devices and a second group of arc drawing devices. The first group of arc drawing devices includes a first arc drawing device 100, a third arc drawing device 300, and a fifth arc drawing device 500, and the three have the same structure; the second group of arc drawing devices includes a second arc drawing device 200, a fourth arc drawing device 400, and a sixth arc drawing device 600, and the three have the same structure. The first set of arc drawing devices uses a worm gear reducer and a two-stage reducer to achieve a large reduction ratio deceleration, drives the corresponding screw nut mechanism, achieves micron-level radial displacement, and achieves continuous arcing at low voltage AC 220Vac, wherein the reduction ratio i>1000, and the second set of arc drawing devices uses a seven-stage parallel shaft reducer to decelerate, drives the corresponding screw nut mechanism, achieves micro radial displacement, and also achieves continuous arcing at low voltage AC 220Vac. The second set of arc drawing devices also has a Z-axis lifting device to adjust the height of the moving pole to adapt to the situation where the pole cannot be aligned due to processing and assembly errors. The first arc drawing device 100, the third arc drawing device 300, and the fifth arc drawing device 500 are distributed along the circumference of 120 degrees. The second arc drawing device 200, the fourth arc drawing device 400, and the sixth arc drawing device 600 are distributed along the circumference of 120 degrees. The first arc drawing device 100 , the second arc drawing device 200 , the third arc drawing device 300 , the fourth arc drawing device 400 , the fifth arc drawing device 500 , and the sixth arc drawing device 600 are alternately arranged in sequence.

[0014] like Figure 3 , Figure 4 The first arc drawing device 100 comprises a screw nut mechanism, a first permanent magnet DC brush motor module 101, a base 102, a first epoxy substrate 103, a second epoxy substrate 104, a guide rod 105, a third epoxy substrate 106, and a fourth epoxy substrate 107; the base 102 is used to install the first permanent magnet DC brush motor module 101, and the fourth epoxy substrate 107 is installed on the base 102; the screw nut mechanism comprises a first T-shaped nut 109 and a first screw 108. The first T-shaped nut 109 is fixed to the L-shaped second epoxy substrate 104 by the seventh screw 116, and a T-shaped clamp 112 is installed on the top surface of the horizontal plate of the second epoxy substrate 104, and the first moving pole 110 is inserted into the hole of the T-shaped clamp 112, and the T-shaped clamp 112 is fixedly connected to the horizontal plate of the L-shaped second epoxy substrate 104 by the fifth screw 111. The first epoxy substrate 103 and the third epoxy substrate 106 are fixed to the fourth epoxy substrate 107 by the eighth screw 117 and the ninth screw 118. The vertical plates of the first epoxy substrate 103, the third epoxy substrate 106 and the second epoxy substrate 104 have corresponding holes for the two guide rods 105 and the lead screw 108 to pass through, and the fourth epoxy substrate 107 is fixed to the rotating base plate 6 by the sixth screw 114.

[0015] like Figure 3 , Figure 4 The first permanent magnet DC brushed motor module 101 drives the first screw rod 108 to rotate through the first coupling 113, driving the first T-nut 109, the second epoxy substrate 104 and the first moving pole 110 to move along the axial direction of the first screw rod 108 as a whole, that is, realizing the radial movement of the first moving pole 110.

[0016] like Figure 5 The first permanent magnet DC brush motor module 101 includes a first permanent magnet DC brush motor 101a, a worm gear reducer 101b and a secondary reducer 101c. The first permanent magnet DC brush motor 101a is decelerated by the worm gear reducer 101b and the secondary reducer 101c, and then drives the first screw 108 to rotate through the first coupling 113.

[0017] like Figure 6 , Figure 7 As shown, the second arc drawing device 200 includes a micro telescopic push rod device 200a and a Z-axis lifting device 200b. The micro telescopic push rod device 200a realizes radial extension and contraction of the second moving pole 201, and the micro telescopic push rod device 200a is installed on the platform of the Z-axis lifting device 200b, and the Z-axis lifting device 200b realizes the height lifting and lowering of the micro telescopic push rod device 200a, that is, the second moving pole 201. The micro telescopic push rod device 200a includes a second moving pole 201, a second coupling 202 and a second permanent magnet DC brush motor module 203; the second permanent magnet DC brush motor module 203 includes a second permanent magnet DC brush motor 203a, a seven-stage parallel shaft reducer 203b, a second lead screw 203c and a second T-nut 203d; the output shaft of the second permanent magnet DC brush motor 203a serves as the input shaft of the seven-stage parallel shaft reducer 203b, and the output shaft of the seven-stage parallel shaft reducer 203b is connected to the second lead screw 203c and driven to rotate, driving the second T-nut 203d to move along the axis direction of the second lead screw 203c. The end of the second coupling 202 is designed with an external thread, which is installed in the internal thread hole at one end of the second T-nut 203d, and the second moving pole 201 is inserted into the hole at the other end of the second coupling 202. The Z-axis lifting device 200b includes a micrometer head 206. The micrometer head 206 is turned to extend or shorten its end, thereby driving the ratchet 207 to rotate a certain angle to achieve the lifting and lowering of the support top plate 210 along the guide rail 209 (Z-axis). The locking nut 205 is used to lock the micrometer head 206 to prevent it from loosening.

[0018] like Figure 6 The micro telescopic push rod device 200a is fixed to the Z-axis lifting device 200b by the tenth screw 204. The second set of arc drawing devices is fixed to the rotating base plate 6 by the eleventh screw 208.

[0019] like Figure 1 , the battery 3 supplies power to the first permanent magnet DC brush motor controller 1 and the second permanent magnet DC brush motor controller 2. The first permanent magnet DC brush motor controller 1 controls the actions of the first arc drawing device 100, the third arc drawing device 300 and the fifth arc drawing device 500. The second permanent magnet DC brush motor controller 2 controls the actions of the second arc drawing device 200, the fourth arc drawing device 400 and the sixth arc drawing device 600. The limit switch 19 is arranged on the stationary substrate 10, aligned with the first static pole 15, and is used for limiting the circumferential direction of the first pinion drive motor 7.

[0020] like Figure 2 The battery 3, the first permanent magnet DC brush motor controller 1, the second permanent magnet DC brush motor controller 2, the first arc drawing device 100 to the sixth arc drawing device 600 are fixed to the platform of the rotating base plate 6. The first pinion drive motor 7 and the second pinion drive motor 8 form a dual motor to drive the first pinion 4a, the second pinion 4b and the main reducer composed of the large gear 5, thereby driving the rotating base plate 6 and the components thereon to decelerate and rotate.

[0021] like Figure 2 , the first pinion drive motor 7 and the second pinion drive motor 8 are fixed to the stationary substrate 10 by the third screw 13 and the second screw 12 respectively. The stationary substrate 10 is supported by the first support base plate 9a to the sixth support base plate 9f and fixed by the first screw 11. The first static pole 15 is inserted into the through hole of the first epoxy flange 14, and the second static pole 17 is inserted into the through hole of the second epoxy flange 18, and then the first epoxy flange 14 and the second epoxy flange 18 are fixed to the stationary substrate 10 by the fourth screw 16.

[0022] The first pinion drive motor 7 adopts a permanent magnet DC brushless servo motor with an absolute encoder, which is located at the non-driving end of the motor and is used to collect the position signal of the motor rotor. The limit switch 19 is arranged on the stationary substrate 10, aligned with the static pole, and is used to limit the circumferential direction of the first pinion drive motor 7. The main reducer composed of large and small gears reduces speed and increases torque on the first and second pinion drive motors. In conjunction with the limit switch 19, precise angular position control of the rotating substrate 6 and the components thereon is achieved. The second pinion drive motor 8 adopts a permanent magnet DC brushed motor, uses PWM stepless speed regulation, and reduces speed through the main reducer to achieve precise speed control of the rotating substrate 6 and the components thereon. Two control modes, synchronous or asynchronous operation, are easy to debug and adapt to more working conditions.

[0023] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-channel arc generation control device with micro-adjustment, characterized in that: The device integrates two groups of arc drawing devices: a first group of arc drawing devices and a second group of arc drawing devices and a rotating base plate, the first group of arc drawing devices and the second group of arc drawing devices are located on the rotating base plate, and each group of arc drawing devices is distributed along the circumference of the rotating base plate at 120 degrees; The first set of arc drawing devices adopts a permanent magnet DC brush motor module to drive a worm gear reducer and a two-stage reducer to achieve large reduction ratio deceleration, drive the lead screw nut mechanism, and achieve micron-level macro radial displacement of the moving pole, wherein the reduction ratio i>1000; the second set of arc drawing devices is driven by a permanent magnet DC brush motor module through a seven-stage parallel shaft reducer to drive the lead screw nut mechanism to achieve micro radial displacement. The second set of arc drawing devices also has a Z-axis lifting device to achieve height adjustment of the moving pole. The deceleration rotation of the rotating substrate is driven by a dual-motor drive main reducer consisting of a first pinion drive motor and a second pinion drive motor.

2. A multi-channel arc generation control device with micro-adjustment according to claim 1, characterized in that: The first group of arc pulling devices includes a first arc pulling device, a third arc pulling device, and a fifth arc pulling device, and the three have the same structure; the second group of arc pulling devices includes a second arc pulling device, a fourth arc pulling device, and a sixth arc pulling device, and the three have the same structure; the first arc pulling device, the second arc pulling device, the third arc pulling device, the fourth arc pulling device, the fifth arc pulling device, and the sixth arc pulling device are arranged alternately in sequence.

3. A multi-channel arc generation control device with micro-adjustment according to claim 2, characterized in that: The first arc drawing device includes a screw nut mechanism, a first permanent magnet DC brush motor module, a machine base, a first epoxy substrate, a second epoxy substrate, a guide rod, a third epoxy substrate, and a fourth epoxy substrate; the machine base is used to install the first permanent magnet DC brush motor module, and the fourth epoxy substrate is installed on the machine base; the screw nut mechanism includes a first T-nut and a first screw, the first T-nut is fixed to the L-shaped second epoxy substrate, the top surface of the horizontal plate of the second epoxy substrate is installed with a T-clamp, the first moving pole is inserted into the hole of the T-clamp, the T-clamp is fixedly connected to the horizontal plate of the L-shaped second epoxy substrate, the first epoxy substrate, the third epoxy substrate and the fourth epoxy substrate are fixed, the vertical plates of the first epoxy substrate, the third epoxy substrate and the second epoxy substrate have corresponding holes for two guide rods and the screw to pass through, and the fourth epoxy substrate is fixed to the rotating substrate.

4. The multi-channel arc generation control device with micro-adjustment according to claim 3 is characterized in that: The first permanent magnet DC brush motor module drives the first screw to rotate through the first coupling, driving the first T-nut, the second epoxy substrate and the first moving pole to move as a whole along the axial direction of the first screw, that is, realizing the radial movement of the first moving pole; the first permanent magnet DC brush motor module includes a first permanent magnet DC brush motor, a worm gear reducer and a secondary reducer. The first permanent magnet DC brush motor is decelerated through the worm gear reducer and the secondary reducer, and then drives the first screw to rotate through the first coupling.

5. The multi-channel arc generation control device with micro-adjustment according to claim 2, characterized in that: The second arc drawing device includes a micro-telescopic push rod device and a Z-axis lifting device. The micro-telescopic push rod device realizes radial extension and contraction of the second moving pole. The micro-telescopic push rod device is installed on the platform of the Z-axis lifting device. The Z-axis lifting device realizes the height lifting and lowering of the micro-telescopic push rod device, i.e., the second moving pole; wherein the micro-telescopic push rod device includes the second moving pole, the second coupling and the second permanent magnet DC brush motor module; the second permanent magnet DC brush motor module includes the second permanent magnet DC brush motor, a seven-stage parallel shaft reducer, a second lead screw and a second T-nut; the second permanent magnet DC brush motor The output shaft of the machine serves as the input shaft of the seven-stage parallel shaft reducer. The output shaft of the seven-stage parallel shaft reducer is connected to the second lead screw and driven to rotate, driving the second T-nut to move along the axial direction of the second lead screw. The end of the second coupling is designed with an external thread and installed in the internal threaded hole at one end of the second T-nut. The second moving pole is inserted into the hole at the other end of the second coupling. The Z-axis lifting device includes a micrometer head. The micrometer head is turned to achieve the extension or shortening of its end, thereby driving the ratchet to rotate a certain angle to achieve the lifting and lowering of the support top plate along the Z-axis guide direction. The locking nut is used to lock the micrometer head.

6. The multi-channel arc generation control device with micro-adjustment according to claim 1, characterized in that: It also includes a battery, a first permanent magnet DC brush motor controller and a second permanent magnet DC brush motor controller; the battery supplies power to the first permanent magnet DC brush motor controller and the second permanent magnet DC brush motor controller; the first permanent magnet DC brush motor controller controls the actions of the first arc pulling device, the third arc pulling device and the fifth arc pulling device, and the second permanent magnet DC brush motor controller controls the actions of the second arc pulling device, the fourth arc pulling device and the sixth arc pulling device.

7. The multi-channel arc generation control device with micro-adjustment according to claim 1, characterized in that: The first pinion drive motor adopts a permanent magnet DC brushless servo motor with an absolute encoder. The absolute encoder is located at the non-driving end of the motor and is used to collect the position signal of the motor rotor. The limit switch is arranged on the stationary substrate and aligned with the static pole. It is used to limit the circumferential direction of the first pinion drive motor. The main reducer composed of large and small gears mainly reduces speed and increases torque for the first and second pinion drive motors, and cooperates with the limit switch to achieve precise angular position control of the rotating substrate and the components thereon. The second pinion drive motor adopts a permanent magnet DC brushed motor and uses PWM stepless speed regulation. It is decelerated by the main reducer to achieve precise speed control of the rotating substrate and the components thereon.

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