CN112908122A - Brushless DC motor reversing control device - Google Patents
Brushless DC motor reversing control device Download PDFInfo
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- CN112908122A CN112908122A CN202110138155.1A CN202110138155A CN112908122A CN 112908122 A CN112908122 A CN 112908122A CN 202110138155 A CN202110138155 A CN 202110138155A CN 112908122 A CN112908122 A CN 112908122A
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- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/188—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for motors; for generators; for power supplies; for power distribution
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Abstract
The invention belongs to the technical field of motor control devices, in particular to a brushless direct current motor reversing control device, and aims at solving the problem of large adjustment error of the existing controller, the brushless direct current motor reversing control device comprises a controller body, wherein a clamping mechanism is arranged in a pointer, the clamping mechanism is provided with two movable grooves at the rear end of the pointer, springs are fixed in the movable grooves, a first clamping rod and a second clamping rod are respectively fixed at the rear ends of the two springs, fixed blocks are respectively fixed at the rear ends of the first clamping rod and the second clamping rod, a first clamping groove and a second clamping groove are formed in a scale dial, and the first clamping groove and the second clamping groove are respectively aligned with a long scale mark and a short scale mark. According to the invention, when the visual pointer rotates to a set scale value, the fixed block on the first clamping rod is clamped with the first clamping groove under the action of the spring, and when the visual pointer rotates to a short scale position, the spring pushes the second clamping rod and the fixed block to be clamped with the second clamping groove for positioning, so that the adjustment error of the pointer is reduced.
Description
Technical Field
The invention relates to the technical field of motor control devices, in particular to a brushless direct current motor reversing control device.
Background
The permanent magnet brushless direct current motor has the advantages of simple structure, high reliability, high efficiency, good starting performance, good speed regulation performance and the like, the rotor position which is more and more widely applied in various industries is an important signal required for controlling the brushless direct current motor, and the current permanent magnet brushless direct current motor generally adopts a switch type Hall sensor to detect the rotor position and carries out commutation according to the rotor position. Commutation of a brushless dc motor typically requires the use of a motor commutation controller.
In physics teaching experiment or research room, all need use brushless DC motor to carry out the experiment operation, and motor commutation controller is one of the essential device of DC motor experiment, motor commutation controller not only can control DC motor's direction of rotation, and can adjust the electric current size that lets in the DC motor, current device is when adjusting the electric current size, generally through the position of scale mark on visual observation pointer and the calibrated scale, adjust, this in-process, there is great error, therefore, make corresponding improvement to this problem.
Disclosure of Invention
Based on the technical problem that an existing controller is large in adjusting error, the invention provides a brushless direct current motor reversing control device.
The invention provides a brushless direct current motor reversing control device, which comprises a controller body, wherein a first switch, a second switch, a third switch, an adjusting knob and a plurality of wiring terminals are fixedly penetrated at the front end of the controller body, a transparent window is arranged at the front end of the controller body, a scale dial is arranged in the transparent window, a pointer is fixedly sleeved at the rear end of the adjusting knob, a clamping mechanism is arranged in the pointer, two movable grooves are formed in the rear end of the pointer by the clamping mechanism, a spring is fixedly arranged in each movable groove through a bolt, a first clamping rod and a second clamping rod are respectively fixedly arranged at the rear ends of the two springs through bolts, a fixed block is fixedly arranged at the rear ends of the first clamping rod and the second clamping rod through bolts, the section of each fixed block is arc-shaped, a plurality of first clamping grooves and a plurality of second clamping grooves distributed in an annular array are formed in the scale dial, and the first clamping grooves and the second clamping grooves are respectively aligned with, the cross sections of the first clamping groove and the second clamping groove are both arc-shaped.
Preferably, the rear end of the fixing block is provided with a plurality of grooves distributed in an annular array, and the grooves are rotatably connected with rollers through bearings.
Preferably, the surface of the roller is provided with a plurality of resistance-increasing grooves distributed in an annular array, and the cross sections of the resistance-increasing grooves are arranged in a V shape.
Preferably, the limiting groove has all been seted up to activity inslot wall top and bottom, and sliding connection has the stopper in the limiting groove, and a plurality of stoppers correspond position fixed connection with first kelly and second kelly respectively.
Preferably, the movable groove is internally provided with a regulating mechanism, the regulating mechanism is fixedly provided with an electromagnet on the inner wall of the movable groove through a bolt, the front ends of the first clamping rod and the second clamping rod are respectively provided with a placing groove, a permanent magnet is bonded in the placing grooves, and the electromagnet and the permanent magnet are oppositely arranged.
Preferably, the adjusting knob is fixed with a speed sensor through a bolt, a PLC processor is fixed in the controller body through a bolt, and the speed sensor, the PLC processor and the electromagnet are electrically connected.
Preferably, the rear end of the controller body is fixed with a mounting cover through a bolt.
Preferably, the controller body bottom has been seted up and has been deposited the groove, and it has two dead levers to deposit the inslot through the bolt fastening, sets up two symmetric distribution's mounting groove on the dead lever, rotates through the bearing in the mounting groove and is connected with the outer pole, and the gomphosis groove has been seted up to the outer pole bottom, and the inslot of gomphosis has interior pole, has same pull rod through the bolt fastening between two interior poles, is provided with tension mechanism between outer pole and the interior pole.
Preferably, the bottom of the inner rod of the stretching mechanism is provided with a plurality of uniformly distributed thread grooves, the outer rod is provided with a screw rod in a penetrating manner, and the screw rod is in threaded connection with the thread grooves.
Compared with the prior art, the invention provides a brushless direct current motor reversing control device, which has the following beneficial effects:
1. the brushless direct current motor reversing control device is characterized in that a first clamping rod and a second clamping rod are arranged, when the current led into the brushless direct current motor is adjusted through an adjusting knob, the adjusting knob is rotated to drive a pointer to rotate, the first clamping rod and the second clamping rod are driven to rotate, a fixed block is driven to rotate, when an eye-measurement pointer rotates to a set scale value, the fixed block on the first clamping rod is clamped with a first clamping groove under the action of a spring and used for positioning a long scale mark, when the eye-measurement pointer rotates to a short scale position, the spring pushes the second clamping rod and the fixed block to be clamped with a second clamping groove and positioned, so that the adjustment error of the pointer is reduced, the accuracy of an experimental result is improved, further, a limiting groove and a limiting block are arranged, namely, the first clamping rod and the second clamping rod can move along the limiting groove along the radial direction along with the limiting block, thereby effectively improve the stability of first kelly and second kelly motion process, it is further, be provided with recess and cylinder, can make the cylinder take place the rolling friction between removal in-process and the scale dial plate, thereby effectively reduce the removal moving resistance to the fixed block, thereby make adjust knob's accommodation process nimble more laborsaving, and can prevent the wearing and tearing to the scale dial plate, it is further, be provided with the resistance-increasing groove that a plurality of ring array distribute, the resistance-increasing groove cross-section sets to the V-arrangement, can effectively improve the roughness on cylinder surface, thereby improve the stiction between first draw-in groove and second draw-in groove and the cylinder, thereby make the positioning process between first kelly and first draw-in groove and second kelly and the second draw-in groove more stable.
2. The brushless direct current motor reversing control device is provided with a regulating mechanism, an electromagnet can be started through a first switch, magnetic force is generated after the electromagnet is electrified, the generated magnetic force attracts a permanent magnet, then a first clamping rod and a second clamping rod move inwards, a spring is compressed, a fixed block is separated from a scale dial plate, and therefore a relevant experiment for observing current change is conveniently carried out by the device normally, further, a speed sensor is arranged, when the current intensity in a carrier is changed through an adjusting knob, when the speed sensor detects that the rotating speed of the adjusting knob reaches a set value, the speed sensor transmits a signal to a PLC sensor, the PLC sensor receives and processes the signal, an instruction is sent to the electromagnet from an output end, the electromagnet is electrified, and then the first clamping rod and the second clamping rod are attracted, make fixed block and scale dial plate break away from to accord with human regulation action, when carrying out the coarse adjustment when thick, the rotational speed is very fast, when the pointer is close to appointed scale, can reduce the rotational speed, thereby make and adjust the positioning process more intelligent nimble, and effectively reduce the wearing and tearing between scale dial plate and the fixed block.
3. This brushless DC motor switching-over controlling means, through setting up the pull rod, hold the pull rod, pull out interior pole from the outer pole, after drawing suitable length, through screw rod and the thread groove threaded connection who corresponds, then with the rigidity of interior pole, then rotate interior pole to both sides in two, utilize the pull rod to carry out stable triangular supports, thereby make the device place more stably, and can adjust the support area according to the usage space is nimble, when transporting the device, can close together two pull rods, can use as the handle, thereby be convenient for carry the transportation to the device, thereby improve the device's functionality.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a brushless dc motor commutation control apparatus according to the present invention;
fig. 2 is an enlarged schematic view of a structure a of a brushless dc motor commutation control apparatus according to the present invention;
fig. 3 is a schematic view of an installation structure of a locking mechanism of a brushless dc motor commutation control device according to the present invention;
fig. 4 is a schematic diagram of an internal structure of a pointer of a brushless dc motor commutation control device according to the present invention;
fig. 5 is an enlarged schematic view of a structure B of a brushless dc motor commutation control device according to the present invention;
fig. 6 is a schematic view of an installation structure of a control mechanism of a brushless dc motor commutation control apparatus according to embodiment 2 of the present invention;
fig. 7 is a schematic top view of a commutation control device of a brushless dc motor according to embodiment 3 of the present invention;
fig. 8 is a schematic diagram of an internal structure of an outer rod of a brushless dc motor commutation control apparatus according to embodiment 3 of the present invention.
In the figure: 1. a controller body; 2. a first switch; 3. a second switch; 4. a third switch; 5. adjusting a knob; 6. a dial plate is graduated; 7. a binding post; 8. a pointer; 9. a first card slot; 10. a second card slot; 11. a movable groove; 12. a spring; 13. a first clamping rod; 14. a second clamping rod; 15. a fixed block; 16. a groove; 17. a drum; 18. a resistance increasing groove; 19. a limiting groove; 20. a limiting block; 21. an electromagnet; 22. a placing groove; 23. a permanent magnet; 24. a storage tank; 25. installing a cover; 26. fixing the rod; 27. mounting grooves; 28. an outer rod; 29. an inner rod; 30. a pull rod; 31. a thread groove; 32. a screw; 33. a fitting groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-5, a brushless dc motor commutation control device comprises a controller body 1, a first switch 2, a second switch 3, a third switch 4, an adjusting knob 5 and a plurality of terminals 7 are fixed at the front end of the controller body 1, a transparent window is arranged at the front end of the controller body 1, a scale dial 6 is arranged in the transparent window, a pointer 8 is fixed at the rear end of the adjusting knob 5 in a sleeved manner, a locking mechanism is arranged in the pointer 8, the locking mechanism is provided with two movable grooves 11 at the rear end of the pointer 8, springs 12 are fixed in the movable grooves 11 through bolts, a first clamping rod 13 and a second clamping rod 14 are respectively fixed at the rear ends of the two springs 12 through bolts, a fixed block 15 is fixed at the rear ends of the first clamping rod 13 and the second clamping rod 14 through bolts, the section of the fixed block 15 is arc-shaped, a plurality of first clamping grooves 9 and second clamping grooves 10 distributed in an annular array are arranged on the scale dial 6, first draw-in groove 9 and second draw-in groove 10 align with long scale mark and short scale mark respectively, first draw-in groove 9 and the equal arc that sets into of second draw-in groove 10 cross-section, when range estimation pointer 8 rotates to established scale interval, fixed block 15 on the first kelly 13 is under spring 12's effect, with first draw-in groove 9 joint, a location for to long scale mark, when range estimation pointer 8 rotates to short scale mark position, spring 12 promotes second kelly 14 and fixed block 15, with second draw-in groove 10 joint, fix a position, thereby make pointer 8's adjusting error reduce, improve the degree of accuracy of experimental result.
In the invention, the rear end of the fixed block 15 is provided with a plurality of grooves 1 distributed in an annular array, and the grooves 16 are rotatably connected with the roller 17 through the bearing, so that the roller 17 can generate rolling friction with the scale dial 6 in the moving process, thereby effectively reducing the moving resistance of the fixed block 15, enabling the adjusting process of the adjusting knob 5 to be more flexible and labor-saving, and preventing the scale dial 6 from being worn.
In the invention, the surface of the roller 17 is provided with a plurality of resistance-increasing grooves 18 distributed in an annular array, and the cross sections of the resistance-increasing grooves 18 are arranged in a V shape, so that the roughness of the surface of the roller 17 can be effectively improved, and the static friction between the first clamping groove 9 and the second clamping groove 10 and the roller 17 is improved, and the positioning process between the first clamping rod 13 and the first clamping groove 9 and between the second clamping rod 14 and the second clamping groove 10 is more stable.
According to the invention, the top and the bottom of the inner wall of the movable groove 11 are respectively provided with a limiting groove 19, the limiting grooves 19 are connected with limiting blocks 20 in a sliding manner, and the limiting blocks 20 are respectively fixedly connected with the corresponding positions of the first clamping rod 13 and the second clamping rod 14, so that the first clamping rod 13 and the second clamping rod 14 can move along the limiting grooves 19 along with the limiting blocks 20 in the radial direction, and the stability of the movement process of the first clamping rod 13 and the second clamping rod 14 is effectively improved.
When the device is used, when the current led into the brushless direct current motor is adjusted through the adjusting knob 5, the adjusting knob 5 is rotated to drive the pointer 8 to rotate, then the first clamping rod 13 and the second clamping rod 14 are driven to rotate, then the fixed block 15 is driven to rotate, when the visual inspection pointer 8 rotates to a set scale value, the fixed block 15 on the first clamping rod 13 is clamped with the first clamping groove 9 under the action of the spring 12 for positioning a long scale mark, when the visual inspection pointer 8 rotates to a short scale mark position, the spring 12 pushes the second clamping rod 14 and the fixed block 15 to be clamped with the second clamping groove 10 for positioning, so that the adjusting error of the pointer 8 is reduced, the accuracy of an experimental result is improved, further, the limiting groove 19 and the limiting block 20 are arranged, so that the first clamping rod 13 and the second clamping rod 14 can move along the limiting groove 19 in the radial direction along with the limiting block 20, thereby effectively improve the stability of first kelly 13 and second kelly 14 motion process, it is further, be provided with recess 16 and cylinder 17, can make cylinder 17 take place rolling friction between removal in-process and scale dial 6, thereby effectively reduce the removal resistance to fixed block 15, thereby make adjust knob 5's accommodation process nimble laborsaving more, and can prevent the wearing and tearing to scale dial 6, it is further, be provided with the resistance-increasing groove 18 that a plurality of ring array distribute, the resistance-increasing groove 18 cross-section sets to the V-arrangement, can effectively improve the roughness on cylinder 17 surface, thereby improve the stiction between first draw-in groove 9 and second draw-in groove 10 and the cylinder 17, thereby make the positioning process between first kelly 13 and first draw-in groove 9 and second kelly 14 and the second draw-in groove 10 more stable.
Example 2
Referring to fig. 1-6, a brushless dc motor commutation control device, a regulation mechanism is arranged in a movable groove 11, an electromagnet 21 is fixed on the inner wall of the movable groove 11 by a bolt by the regulation mechanism, a placement groove 22 is respectively arranged at the front ends of a first clamping rod 13 and a second clamping rod 14, a permanent magnet 23 is bonded in the placement groove 22, and the electromagnet 21 and the permanent magnet 23 are oppositely arranged.
According to the invention, a speed sensor is fixed on an adjusting knob 5 through a bolt, a PLC (programmable logic controller) processor is fixed in a controller body 1 through a bolt, the speed sensor, the PLC processor and an electromagnet 21 are electrically connected, when the speed sensor detects that the rotating speed of the adjusting knob 5 reaches a set value, the speed sensor transmits a signal to the PLC sensor, the PLC sensor receives and processes the signal and sends an instruction to the electromagnet 21 from an output end, the electromagnet 21 is electrified, and then a first clamping rod 13 and a second clamping rod 14 are sucked, so that a fixed block 15 is separated from a scale dial 6, and the adjusting action of a human is met.
When the device is used, the electromagnet 21 can be started through the first switch 2 by arranging the regulating mechanism, the electromagnet 21 generates magnetic force after being electrified, the generated magnetic force attracts the permanent magnet 23, the first clamping rod 13 and the second clamping rod 14 move inwards, the spring 12 is compressed, and the fixed block 15 is separated from the scale dial 6, so that the device can be used for normally observing related experiments of current change, further, a speed sensor is arranged, when the current value in the carrier is changed by the adjusting knob 5, when the rotating speed of the adjusting knob 5 reaches a set value, the speed sensor transmits a signal to the PLC sensor, the PLC sensor receives and processes the signal, an instruction is sent to the electromagnet 21 from the output end, the electromagnet 21 is electrified, and then the first clamping rod 13 and the second clamping rod 14 are attracted, make fixed block 15 and scale dial 6 break away from to accord with human regulation action, when carrying out thick when transferring, the rotational speed is very fast, when pointer 8 is close to appointed scale, can reduce the rotational speed, thereby make and adjust the positioning process more intelligent nimble, and effectively reduce the wearing and tearing between scale dial 6 and the fixed block 15.
Example 3
Referring to fig. 1 to 8, in a commutation control device of a brushless dc motor, a mounting cover 25 is fixed to a rear end of a controller body 1 by bolts.
In the invention, the bottom of the controller body 1 is provided with a storage groove 24, two fixing rods 26 are fixed in the storage groove 24 through bolts, two symmetrically distributed mounting grooves 27 are formed in the fixing rods 26, an outer rod 28 is rotatably connected in the mounting groove 27 through a bearing, the bottom of the outer rod 28 is provided with an embedded groove 33, an inner rod 29 is inserted in the embedded groove 33, the same pull rod 30 is fixed between the two inner rods 29 through bolts, a stretching mechanism is arranged between the outer rod 28 and the inner rod 29, so that the pull rod 30 can be held, the inner rod 29 is pulled out of the outer rod 28, after the inner rod is pulled to a proper length, the position of the inner rod 29 is fixed through the stretching mechanism, then the two inner rods 29 are rotated towards two sides, and the pull rod 30 is used for stable triangular support, thus the device is placed more.
In the invention, the bottom of the inner rod 29 of the stretching mechanism is provided with a plurality of evenly distributed thread grooves 31, the outer rod 28 is provided with a screw 32 in a penetrating way, and the screw 32 is in threaded connection with the thread grooves 31.
During the use, when using the device, can hold pull rod 30, pull out interior pole 29 from outer pole 28, after drawing suitable length, through screw rod 32 and the 31 threaded connection of thread groove that corresponds, then with the rigidity of interior pole 29, then rotate two interior poles 29 to both sides, utilize pull rod 30 to carry out stable triangular supports, thereby make the device place more stably, and can adjust the support area according to the usage space is nimble, when transporting the device, can close up two pull rod 30, can use as the handle, thereby be convenient for carry the transportation to the device, thereby improve the device's functionality.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110138155.1A CN112908122B (en) | 2021-02-01 | 2021-02-01 | A brushless DC motor commutation control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110138155.1A CN112908122B (en) | 2021-02-01 | 2021-02-01 | A brushless DC motor commutation control device |
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| CN112908122A true CN112908122A (en) | 2021-06-04 |
| CN112908122B CN112908122B (en) | 2022-11-18 |
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| CN111307132A (en) * | 2020-03-24 | 2020-06-19 | 杭州泰央实业有限公司 | Measuring device capable of measuring levelness and verticality for building |
| CN211967464U (en) * | 2020-04-17 | 2020-11-20 | 崔岩 | Portable nursing tool case |
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| CN112908122B (en) | 2022-11-18 |
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Effective date of registration: 20221027 Address after: 214000 B District, Yang Jian Town Industrial Park, Xishan District, Wuxi, Jiangsu. Applicant after: WUXI XINSHILI MOTOR TECHNOLOGY Co.,Ltd. Address before: 322118 Hengdian Electronic Industrial Park, Dongyang City, Jinhua City, Zhejiang Province Applicant before: Liu Weihua |
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