CN216943263U - Differential electric steering system and electric automobile thereof - Google Patents
Differential electric steering system and electric automobile thereof Download PDFInfo
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- CN216943263U CN216943263U CN202120582153.7U CN202120582153U CN216943263U CN 216943263 U CN216943263 U CN 216943263U CN 202120582153 U CN202120582153 U CN 202120582153U CN 216943263 U CN216943263 U CN 216943263U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention abandons the working mode of realizing automobile steering by rotating the front wheel of the automobile, provides a differential electric steering system and an electric automobile thereof, and forms a power system and the differential electric steering system of the electric automobile by applying a Hall sensor, a speed controller, electric wheels, a power supply, a reversing rod and the like; when the steering wheel is not deflected, the vehicle advances in a straight line; when the steering wheel deflects, the speed difference of the left front electric wheel and the right front electric wheel is gradually increased along with the increase of the steering angle of the steering wheel so as to steer the automobile; compared with the traditional steering system, the invention has the advantages of good steering performance, flexibility, simple structure, light weight, small volume, low failure rate, low cost, easy manufacture and assembly, no need of maintenance, good practicability, capability of steering the vehicle in situ and easy and simple driving operation.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a differential electric steering system and an electric automobile with the same.
Background
The steering of the existing automobile is realized by rotating the front wheels of the automobile. The steering mode leads to the complex structure, high processing precision requirement, large manufacturing difficulty, high cost and high failure rate of the steering system of the prior automobile. The steering system integrates the defects of heavy weight, large required space, easy abrasion, poor stability, high maintenance cost and the like. With the development of the electric wheel manufacturing process which is mature and stable in quality and the development of the electric control technology which is changed day by day, the reliable technology and equipment guarantee are provided for adopting differential electric steering for automobile steering.
Disclosure of Invention
The invention provides a differential electric steering system and an electric automobile thereof. The invention abandons the working mode of realizing the steering of the automobile by rotating the front wheel of the automobile, and provides the differential electric steering system and the electric automobile with the differential electric steering system, which have the advantages of simple structure, easy manufacture, stable and reliable work, good steering performance, flexibility, small volume, low cost, simple operation, easiness and convenience.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a differential electric steering system and electric automobile thereof, includes automobile shell, frame chassis, seat, wheel, illumination, power, driving system, braking system, a steering system, its characterized in that: at least four wheel shafts vertical to the advancing direction are symmetrically and fixedly arranged on the front side and the rear side below the frame chassis; the wheels are electric wheels, and the number of the electric wheels is equal to that of wheel axles below the frame chassis; the electric wheel comprises a hub, a tire mounted on the hub and a motor assembly mounted in the hub; the electric wheels are fixedly arranged on the wheel shafts below the frame chassis.
The power system consists of a speed control seat, a Hall sensor 5, a speed controller 5, a rear electric wheel and a power supply; the speed control seat consists of a speed control seat body, a rotating shaft, a gear, a rack and a reset spring (not shown in the figure); the speed control seat body is a combination of a cylinder and a cuboid; the cuboid part in the speed control seat body is fixed above the chassis of the frame, and the cylinder is positioned above the cuboid; the rotating shaft is matched with a cylinder in the speed control seat body,the rotating shaft is positioned in the cylinder and can coaxially and freely rotate; the gear is fixedly connected to one end of the rotating shaft; the rack is meshed with the gear, the reset spring is connected to the frame chassis and the rack, and the rack and the frame chassis form an angle under the restraint of the frame chassis and can move up and down for a certain distance when stressed; when the rack is subjected to a downward external force, the rack moves downwards and is meshed with a gear on the rotating shaft to drive the rotating shaft to rotate, and meanwhile, the reset spring generates elastic deformation; after the external force is removed, the rack is meshed with the gear to reversely rotate the rotating shaft to reset to the initial position of the rotating shaft under the elastic force action of the reset spring; the Hall sensor consists of a Hall chip and an arc-shaped magnetic steel; a Hall chip on the Hall sensor 5 is fixedly embedded into the inner wall of the cylinder of the speed control seat body, and the surface of the Hall chip and the inner wall of the cylinder form a smooth curved surface; the magnetic steel on the Hall sensor is embedded into the outer wall of the rotating shaft, and the surface of the magnetic steel and the outer surface of the rotating shaft form a smooth curved surface; the speed controller 5 and the power supply are fixed on a chassis of the automobile frame, and the power supply is electrically connected with the speed controller 5; a power line and a signal line on the Hall sensor 5 are electrically connected with the speed controller 5; motor on rear electric vehicle wheelM3、M4 is electrically connected with the output end of the speed controller 5; when the rack moves downwards to drive the rotating shaft to rotate, the change of the relative position of the magnetic steel on the rotating shaft and the Hall chip in the speed control seat body changes the magnetic field around the Hall chip, so that the output voltage of the Hall sensor is increased; the voltage signal on the Hall sensor 5 is transmitted to the speed controller 5, and the speed controller 5 drives the rear wheel motorM3、M4, the output voltage and the current are increased; when the rack moves upward, the output voltage of the hall sensor 5 decreases; speed controller 5 rear wheel motorM3、M4, the output voltage and the current are reduced along with the output voltage and the current; speed controller 5 backward electric wheel motorM3、M4 the change of the output voltage and the current controls the power of the electric automobile, so that the advancing speed of the electric automobile is changed along with the change of the output voltage and the current. The steering system is a differential electric steering system.
The differential electric steering system consists of a steering wheel, a steering wheel seat, a steering Hall sensor, a steering speed controller, a front electric wheel, a power supply and a reversing rod; the steering Hall sensor is composed of a Hall sensor1. The sensor comprises a Hall sensor 2, a Hall sensor 3 and a Hall sensor 4; the steering speed controller consists of a speed controller 1, a speed controller 2, a speed controller 3 and a speed controller 4; the Hall sensors correspond to the speed controllers one by one; the steering wheel consists of a turntable, a steering rod and an elastic torsion bar; one end of the direction rod is fixedly connected to the lower part of the turntable, and the other end of the direction rod is fixedly connected with the elastic torsion rod; the steering wheel seat is a cylinder, and one end of the cylinder is fixed above the chassis of the frame to form a closed end; the outer diameter of the steering rod is matched with the inner diameter of a steering wheel seat cylinder, the steering rod is inserted into the steering wheel seat, and an elastic torsion bar at the bottom of the steering rod is fixedly connected with the bottom of the steering wheel seat; the direction rod can rotate clockwise or anticlockwise for a certain angle along with the turntable from the initial position under the action of external force, and the elastic torsion bar is synchronously elastically deformed; after the external force is removed, the steering rod is restored to the initial position under the action of the elastic torsion bar; the steering Hall sensors of the differential electric steering system are one pair or two pairs; the Hall chip on the steering Hall sensor is fixedly embedded into the inner wall of the steering wheel seat cylinder and is positioned on two sides of a vertical plane where the starting position of the steering rod is positioned, and the surface of the chip and the inner wall of the steering wheel seat cylinder form a smooth curved surface; the magnetic steel on the steering Hall sensor is fixedly embedded into the outer wall of the steering rod and positioned on two sides of a vertical plane at the starting position of the steering rod, and the surface of the magnetic steel and the outer surface of the steering rod form a smooth curved surface; the number of the steering speed controllers is the same as that of the steering Hall sensors, the steering speed controllers are fixed on a chassis of a vehicle frame, and a power supply is electrically connected with the steering speed controllers; the power line and the signal line on the steering Hall sensor are electrically connected with the steering speed controller; motor on front electric vehicle wheelM1、M2 are respectively electrically connected with the output ends of the corresponding steering speed controllers; when the steering wheel does not deflect, the rotating speeds of the front wheels on the left side and the right side are the same, and the vehicle moves forwards along a straight line; when the steering wheel deflects, the relative position of the magnetic steel on the steering rod and the corresponding Hall chip in the steering wheel seat changes to change the magnetic field around the Hall chip, so that the output voltage of the steering Hall sensor changes along with the change of the magnetic field; the voltage signal on the steering Hall sensor is transmitted to the corresponding steering speed controller to change the steering speed controllerThereby changing the electric motor on the front electric wheel electrically connected with the steering speed controllerM1、M2, because the positions of the Hall chips corresponding to the left and right front electric wheels are different, the output voltage signals generated on the corresponding steering Hall sensors when the steering wheel rotates are different, the voltage and the current output to the front left and right electric wheels by the corresponding steering speed controller according to the received different voltage signals are also different, and the left and right front electric wheels generate speed difference to steer the automobile. In the process of steering wheel rotation, the speed difference of the left front electric wheel and the right front electric wheel is gradually increased along with the increase of the steering wheel angle.
The reversing rod is connected with a circuit reversing switch SW in the circuit, the circuit reversing switch SW is respectively and electrically connected with each speed controller and each motor in the electric wheel, the position of the reversing rod is changed, the connection state of the circuit reversing switch SW in the circuit is changed, and the automobile is switched among three motion states of forward movement, reverse movement and power (neutral position) cutting off of the automobile; under the action of the circuit reversing switch SW, the original front and rear electric wheels exchange the original power and steering tasks respectively.
After the technical scheme is adopted, the invention has the remarkable technical effects that: compared with the traditional steering system, the invention has the advantages of good steering performance, flexibility, simple structure, light weight, small volume, low failure rate, low cost, easy manufacture and assembly, good practicability, convenient maintenance, in-situ steering of the vehicle and easy and simple driving operation.
Drawings
FIG. 1: the invention has a main structure schematic diagram;
FIG. 2 is a schematic diagram: the position schematic diagram of each part of the Hall sensor is shown after the speed control seat body and the steering wheel seat are dissected and unfolded;
FIG. 3: the differential electric steering system adopts a circuit diagram when 1 pair of Hall sensors are adopted;
FIG. 4: the differential electric steering system adopts a circuit diagram when 2 pairs of Hall sensors are adopted;
in the figure: 1. a frame chassis; 11. a power source; 2. an electric vehicle wheel; 21. a left front electric wheel; 22. a right front electric wheel; 23. a left rear electric wheel; 24. a right rear electric wheel; 32. a speed control base; 321. a speed control base body; 3211. a cylinder; 322. a rotating shaft; 323. a gear; 324. a rack; 331. a hall chip on the hall sensor 5; 332. magnetic steel on the Hall sensor 5; 4. a differential electric power steering system; 41. a steering wheel; 411. a turntable; 412. a steering column; 413. an elastic torsion bar; 42. a steering wheel base; 43. A reversing lever; 4411. a Hall chip on the Hall sensor 1; 4412. a hall chip on the hall sensor 2; 4413. a hall chip on the hall sensor 3; 4414. a hall chip on the hall sensor 4; 4421. magnetic steel of the steering Hall sensor 1; 4422. magnetic steel on the steering hall sensor 2; 4423. Magnetic steel on the steering hall sensor 3; 4424. and magnetic steel on the steering Hall sensor 4.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, a differential electric steering system and an electric vehicle thereof comprise a vehicle shell, a vehicle frame chassis, a seat, wheels, a lighting device, a power source, a power system, a braking system, a steering system and the like, wherein at least four wheel shafts perpendicular to the advancing direction are fixedly and symmetrically arranged on the front side and the rear side below the vehicle frame chassis 1; the wheels are electric wheels 2, and the number of the electric wheels 2 is equal to that of wheel shafts below the frame chassis 1; the electric wheel 2 comprises a hub, a tire mounted on the hub and a motor assembly mounted in the hub; the electric wheel 2 is fixedly arranged on a wheel shaft below the frame chassis 1; the power system comprises a speed control seat 32, a Hall sensor 5, a speed controller 5 and a motor on a rear electric wheelM3、M4. A power supply 11; the speed control base 32 is composed of a speed control base body 321, a rotating shaft 322, a gear 323, a rack 324, a return spring and the like; the speed control seat body 321 is a combination of a cylinder 3211 and a cuboid; the cuboid part in the speed control seat body 321 is fixed above the frame chassis 1, and the cylinder 3211 is positioned above the cuboid; the rotating shaft 322 and the speed controlThe cylinders 3211 in the seat making base 321 are matched, and the rotating shaft 322 is positioned in the cylinders 3211 and can freely rotate coaxially; the gear 323 is fixedly connected to one end of the rotating shaft 322; the rack 324 is meshed with the gear 323, a return spring (not shown in the figure) is connected to the frame chassis 1 and the rack 324, and the rack 324 forms an angle with the frame chassis 1 under the constraint of the frame chassis 1 and can move up and down for a certain distance when stressed; when the rack 324 is forced downwards, it moves downwards, and the gear 323 on the engaged shaft drives the shaft 322 to rotate, and at the same time, the reset spring generates elastic deformation; after the external force is removed, the rack 324 is meshed with the gear 323 under the elastic force action of the reset spring to reversely rotate the rotating shaft 322 to reset to the initial position of the rotating shaft; the Hall chip 5 on the Hall sensor 5 is fixedly embedded into the inner wall of the cylinder 3211 of the speed control seat body 321, and the surface of the Hall chip 5 and the inner wall of the cylinder 3211 form a smooth curved surface; the magnetic steel 5 on the Hall sensor 5 is embedded into the outer wall of the rotating shaft 322, and the surface of the magnetic steel 5 and the outer surface of the rotating shaft 322 form a smooth curved surface; the speed controller 5 and the power supply 11 are fixed on the chassis 1 of the automobile frame, and as shown in fig. 3 and 4, the power supply 11 is electrically connected with the speed controller 5; power line V on Hall sensor 5i2Signal line V05Is electrically connected with the speed controller 5; motor on rear electric vehicle wheelM3、M4 is electrically connected with the output end of the speed controller 5; when the rack 324 moves downward to drive the rotating shaft 322 to rotate, the change of the relative position between the magnetic steel 5 on the rotating shaft and the hall chip 5 in the speed control seat body changes the magnetic field around the hall chip 5, so that the output voltage of the hall sensor 5 to the speed controller 5 is increased, and the speed controller 5 drives the two rear electric wheel motors to rotateM3、M4, the output voltage and the current are increased; similarly, when the rack 324 moves upward, the speed controller 5 moves toward the rear wheel motorM3、M4, the output voltage and the current are reduced until the output voltage and the current are zero after reset; the speed controller 5 outputs the voltage and current change to the rear electric wheel motor to control the power of the electric automobile, so that the advancing speed of the electric automobile is changed along with the change.
The steering system is a differential electric steering system 4; the differential electric steering system 4 consists of a steering wheel 41, a steering wheel seat 42, a steering Hall sensor and a steering speed controllerMotor on front electric vehicle wheelM1、M2. A power supply 11 and a reversing rod 43; in fig. 3 and 4, the steering hall sensors are respectively a hall sensor 1, a hall sensor 2, a hall sensor 3 and a hall sensor 4; the steering speed controllers are respectively a speed controller 1, a speed controller 2, a speed controller 3 and a speed controller 4. The Hall sensors are respectively in one-to-one correspondence with the speed controllers; the steering wheel 41 is composed of a rotating disc 411, a steering rod 412 and an elastic torsion bar 413; one end of the steering rod 412 is fixedly connected below the rotating disc 411, and the other end of the steering rod is fixedly connected with an elastic torsion bar 413; the steering wheel seat 42 is a cylinder, and one end of the cylinder is fixed on the frame chassis 1 to form a closed end; the outer diameter of the steering rod 412 is matched with the inner diameter of the steering wheel seat cylinder, the steering rod 412 is inserted into the steering wheel seat 42, and the elastic torsion bar 413 at the bottom of the steering rod 412 is fixedly connected with the bottom of the steering wheel seat 42; under the action of external force, the direction rod 412 can rotate clockwise or counterclockwise by a certain angle along with the turntable 411 from the initial position, and at the moment, the elastic torsion bar 413 synchronously generates elastic deformation; after the external force is removed, the steering rod 412 is restored to the initial position under the action of the elastic torsion bar 413; a Hall chip 4411 on a steering Hall sensor 1, a Hall chip 4414 on a Hall sensor 4, a Hall chip 4412 on a Hall sensor 2 and a Hall chip 4413 on a Hall sensor 3 on the steering Hall sensor are respectively and fixedly embedded into the inner wall of the cylinder of the steering wheel seat 42 and are positioned on two sides of a vertical plane where the starting position of a steering column is positioned, and the surface of the chip and the inner wall of the cylinder of the steering wheel seat 42 form a smooth curved surface; the magnetic steel 4421 on the steering Hall sensor 1, the magnetic steel 4424 on the Hall sensor 4, the magnetic steel 4422 on the Hall sensor 2 and the magnetic steel 4423 on the Hall sensor 3 are fixedly embedded into the outer wall of the direction rod 412 and are positioned on two sides of the vertical plane of the initial position of the direction rod 412, and the surface of the magnetic steel and the outer surface of the direction rod 412 form a smooth curved surface; the Hall chips on the same steering Hall sensor correspond to the positions of the magnetic steel so as to ensure that the steering Hall sensor can work normally; when the steering rod 412 rotates, the change of the relative position of the magnetic steel on the steering rod and the corresponding hall chip in the steering wheel seat changes the magnetic field around the hall chip, so that the output signal voltage of each steering hall sensor changes along with the change of the magnetic field; the steering speed controlThe quantity of the brakes is the same as that of the steering Hall sensors, the steering speed controller is fixed on a chassis 1 of the automobile frame, and the steering Hall sensors of the differential electric steering system 4 are in one pair or two pairs.
As shown in fig. 3, when the steering hall sensors of the differential electric power steering system 4 are a pair, the power supply 11 is electrically connected to the speed controller 1 and the speed controller 2; power line V on Hall sensor 1i2Signal line VO1Is electrically connected with the speed controller 1; electric motor on the left front electric wheel 21M1 is electrically connected with a speed controller 1; power line V on Hall sensor 2i2Signal line VO2Is electrically connected with the speed controller 2; electric machine on the front right motored wheel 22M2 is electrically connected with the speed controller 2; when the steering wheel 41 does not deflect, the rotating speeds of the front wheels on the left side and the right side are the same, and the vehicle moves forward along a straight line; if the vehicle needs to turn left, the steering wheel 41 is only needed to be turned left, and the magnetic field around the Hall chip is changed by the relative position change of the magnetic steel on the steering rod 412 and the corresponding Hall chip; at this time, the hall sensor 1 outputs a voltage signal V due to the separation of the hall chip 4411 and the magnetic steel 4421O1No change, corresponding constant output voltage and current of speed controller 1, and motor on left front electric wheel 21 electrically connected with speed controller 1MThe rotating speed of 1 is also unchanged; the relative position of the Hall chip 4412 on the Hall sensor 2 and the magnetic steel 4422 is changed to enhance the magnetic field around the Hall chip 4412, and the output voltage V isO2The output of the speed controller 2 electrically connected to the steering wheel 41 increases as the rotation angle increases to the motor of the right front electric wheel 22MVoltage V at 22And the current is increased along with the increase of the current, so that the rotating speed of the right front electric wheel 22 is increased, the speed difference is generated between the left front wheel 21 and the right front wheel 22, and the left turning of the automobile is realized, and vice versa. During the rotation of the steering wheel 41, the speed difference between the left and right front wheels gradually increases as the rotation angle of the steering wheel 41 increases. Pivot steering of the vehicle may be achieved by turning the steering wheel 41 when the vehicle is at rest.
As shown in fig. 4, when the steering hall sensors of the differential electric power steering system 4 are two pairs, the power supply 11 is connected to the speed controller 1, and the speed is controlledThe speed controller 2, the speed controller 3 and the speed controller 4 are electrically connected; power line V on Hall sensor 1 and Hall sensor 4i2Signal line VO1Signal line VO4Is electrically connected with the speed controller 1 and the speed controller 4; electric machine on left front electric wheel 21MThe speed controller 1 is electrically connected with the output end of the speed controller 1 in the forward direction and is electrically connected with the output end of the speed controller 4 in the reverse direction; hall sensor 2, power cord V on Hall sensor 3i2Signal line VO2Signal line VO3Is electrically connected with the speed controller 2 and the speed controller 3; electric machine on the front right motored wheel 22M2 is electrically connected with the output end of the speed controller 2 in the forward direction and is electrically connected with the output end of the speed controller 3 in the reverse direction; when the steering wheel 41 does not deflect, the rotating speeds of the front wheels on the left side and the right side are the same, and the vehicle moves forwards along a straight line; if the vehicle needs to turn left, the steering wheel 41 is only needed to be deflected to the left, and the magnetic field around the Hall chip is changed by the relative position change of the magnetic steel on the steering rod 412 and the corresponding Hall chip, so that the output voltage of the steering Hall sensor is changed; at the moment, the Hall sensor 1 and the Hall sensor 3 output voltage signals V due to the separation of the Hall chip and the magnetic steelO1、VO3The output voltage and current of the corresponding speed controller 1 and 3 are unchanged, the relative positions of the Hall chips 4412 and the magnetic steel 4422 on the Hall sensor 2 and the Hall sensor 4 and the relative positions of the Hall chips 4414 and the magnetic steel 4424 on the Hall sensor 2 and the Hall sensor 4 are changed, so that the magnetic fields around the Hall chips 4412 and 4414 are enhanced, and the output voltage V is constantO2、VO4The outputs of the speed controller 2 and the speed controller 4 which are electrically connected with the steering wheel 41 and increase along with the increase of the rotation angle of the steering wheel 41 are sent to the motors of the left and the right front electric vehicle wheels 22M2、MVoltage V at 12、V4And the current also increases. Because the output voltage of the speed controller 2 is positive and right front electric wheel 22 motorM2 are electrically connected, the speed controller makes the right front electric wheel 22 subject to forward torque, and the output voltage of the speed controller 4 is reverse and the left front electric wheel 21 motorM1 are electrically connected, and the speed controller 4 makes the left front electric wheel 21 subject to reverse torque, so that the speed difference of the left front wheel and the right front wheel of the vehicle is changed more quickly, and the steering is more flexible. And vice versa. In the direction ofIn the process of rotating the wheel 41, the speed difference between the left and right front wheels is gradually increased along with the increase of the rotation angle of the steering wheel 41.
The reversing lever 43 is connected with a circuit reversing switch sW in the circuit, the circuit reversing switch sW controls the electric connection state of the speed controller and the motor on each electric wheel 2, the position of the reversing lever 43 is changed, and the connection state of the circuit reversing switch sW in the circuit is changed to enable the automobile to be switched among three motion states of forward movement, reverse movement and power (neutral position) cutting off of the automobile; the circuit reversing switch sW, the speed controller and the electric wheel 2 motor are electrically connected according to the connection mode shown in the circuit diagrams of fig. 3 and fig. 4, the electric connection state of the speed controller and the electric motor on each electric wheel 2 is controlled, and the original front and rear electric wheels exchange the original power and steering tasks respectively born by the front and rear electric wheels when backing.
In the above embodiments, the materials used for the speed control seat 32, the steering wheel 41, and the steering wheel seat 42 are preferably non-ferromagnetic materials, so that signal interference between each hall chip and the magnetic steel is not generated; the distance between the hall sensors is also as large as possible to prevent the signals from interfering with each other. Because the speed controller and the Hall sensor can be selected in a plurality of models, the models are selected according to the power of the motor in the electric wheel 2.
Claims (2)
1. The utility model provides a differential electric steering system and electric automobile thereof, includes automobile shell, frame chassis, seat, wheel, illumination, power, driving system, braking system, a steering system, its characterized in that: at least four wheel shafts vertical to the advancing direction are symmetrically and fixedly arranged on the front side and the rear side below the frame chassis (1); the wheels are electric wheels (2), and the number of the electric wheels (2) is equal to that of wheel shafts below the frame chassis (1); the electric vehicle wheel (2) comprises a hub, a tire mounted on the hub and a motor assembly mounted in the hub; the electric wheel (2) is fixedly arranged on a wheel shaft below the frame chassis (1); the power system consists of a speed control seat (32), a Hall sensor 5, a speed controller 5, a rear electric wheel and a power supply (11); the speed control seat (32) is controlled by speedThe seat body (321), the rotating shaft (322), the gear (323), the rack (324) and the reset spring; the speed control seat body (321) is a combination of a cylinder (3211) and a cuboid; the cuboid part in the speed control seat body (321) is fixed above the frame chassis (1), and the cylinder (3211) is positioned above the cuboid; the rotating shaft (322) is matched with a cylinder (3211) in the speed control seat body (321), and the rotating shaft (322) is positioned in the cylinder (3211) and can freely rotate coaxially; the gear (323) is fixedly connected to one end of the rotating shaft (322); the rack (324) is meshed with the gear (323), the reset spring is connected to the frame chassis (1) and the rack (324), the rack (324) forms an angle with the frame chassis (1) under the constraint of the frame chassis (1) and can move up and down for a certain distance when being stressed; when the rack (324) is subjected to downward external force, the rack moves downwards and is meshed with a gear on the rotating shaft to drive the rotating shaft (322) to rotate, and meanwhile, the reset spring generates elastic deformation; after the external force is removed, the rack (324) is meshed with the gear (323) under the elastic force action of the reset spring to reversely rotate the rotating shaft (322) to reset to the initial position of the rotating shaft; the Hall sensor 5 consists of a Hall chip and an arc-shaped magnetic steel; a Hall chip (331) on the Hall sensor 5 is fixedly embedded into the inner wall of a cylinder (3211) of the speed control seat body, and the surface of the Hall chip (331) and the inner wall of the cylinder (3211) form a smooth curved surface; the magnetic steel (332) on the Hall sensor 5 is embedded into the outer wall of the rotating shaft (322), and the surface of the magnetic steel and the outer surface of the rotating shaft (322) form a smooth curved surface; the speed controller 5 and the power supply (11) are fixed on a chassis (1) of the automobile frame, and the power supply (11) is electrically connected with the speed controller 5; a power line and a signal line on the Hall sensor 5 are electrically connected with the speed controller 5; motor on rear electric vehicle wheelM3、M4 is electrically connected with the output end of the speed controller 5; the steering system is a differential electric steering system.
2. The differential electric steering system and the electric vehicle thereof according to claim 1, wherein: the differential electric steering system (4) consists of a steering wheel (41), a steering wheel seat (42), a steering Hall sensor, a steering speed controller, a front electric wheel, a power supply (11) and a reversing rod (43); the steering wheel (41) consists of a rotating disc (411), a steering rod (412) and an elastic torsion bar (413); the direction lever(412) One end of the elastic torsion bar (413) is fixedly connected to the lower part of the rotary disc (411) and the other end of the elastic torsion bar is fixedly connected to the lower part of the rotary disc; the steering wheel seat (42) is a cylinder, and one end of the cylinder is fixed above the frame chassis (1) to form a closed end; the outer diameter of the steering rod (412) is matched with the inner diameter of a steering wheel seat cylinder, the steering rod (412) is inserted into the steering wheel seat (42), and an elastic torsion bar (413) at the bottom of the steering rod is fixedly connected with the bottom of the steering wheel seat; the steering Hall sensor consists of a Hall sensor 1, a Hall sensor 2, a Hall sensor 3 and a Hall sensor 4; the steering speed controller consists of a speed controller 1, a speed controller 2, a speed controller 3 and a speed controller 4; the steering Hall sensors of the differential electric steering system (4) are a pair of Hall sensors 1 and a Hall sensor 2 or a pair of Hall sensors 1, 4, 2 and 3; a Hall chip (4411) on a steering Hall sensor 1, a Hall chip (4414) on a Hall sensor 4, a Hall chip (4412) on a Hall sensor 2 and a Hall chip (4413) on a Hall sensor 3 on the steering Hall sensor are respectively and fixedly embedded into the inner wall of a cylinder of a steering wheel seat (42) and positioned on two sides of a vertical plane where a starting position of a steering rod is positioned, and the surface of the chip and the inner wall of the cylinder of the steering wheel seat (42) form a smooth curved surface; the magnetic steel (4421) on the steering Hall sensor 1, the magnetic steel (4424) on the Hall sensor 4, the magnetic steel (4422) on the Hall sensor 2 and the magnetic steel (4423) on the Hall sensor 3 are fixedly embedded into the outer wall of the direction rod (412) and positioned on two sides of the vertical plane of the initial position of the direction rod (412), and the surface of the magnetic steel and the outer surface of the direction rod form a smooth curved surface; the number of the steering speed controllers is the same as that of the steering Hall sensors, the steering speed controllers are fixed on a chassis (1) of the automobile frame, and the power supply (11) is electrically connected with the steering speed controllers; the power line and the signal line on the steering Hall sensor are electrically connected with the steering speed controller; motor on front electric vehicle wheelM1、M2 are respectively electrically connected with the output ends of the corresponding steering speed controllers; the reversing rod (43) is connected with a circuit reversing switch SW in the circuit, and the circuit reversing switch SW is respectively and electrically connected with each speed controller and each motor of the electric wheel.
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| CN112937681A (en) * | 2021-03-18 | 2021-06-11 | 扬州工业职业技术学院 | Differential electric steering system and electric automobile thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112937681A (en) * | 2021-03-18 | 2021-06-11 | 扬州工业职业技术学院 | Differential electric steering system and electric automobile thereof |
| CN112937681B (en) * | 2021-03-18 | 2024-06-18 | 扬州工业职业技术学院 | Electric automobile with differential electric steering system |
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