Turning and steering device for a four-wheel drive vehicle

Abstract

This invention discloses a rotation and steering device for a four-wheel drive vehicle. A steering sensor is mounted below the steering wheel; driven gears mounted on the inner ends of two front axles mesh with driving gears mounted on the shafts of two front permanent magnet synchronous motors. A movable steel plate on the upper part of the front wheel bearing housing is hinged to an upper fixed steel plate on the same surface. A steering worm gear is mounted on the upper end of the hinge shaft on the movable steel plate, and a lower movable steel plate below the front wheel bearing housing is hinged to a lower fixed steel plate. A servo motor drives the worm gear to rotate via gears and a worm. The rear screw of the engine's transmission worm gear meshes with a power worm gear on the rear axle. The handle of a rare-earth permanent magnet ball hammer passes through a spring and is inserted into a small hole on a 304 stainless steel flange at the inner end of the front wheel axle. The handles of several rare-earth permanent magnet hemispherical hammers pass through their respective springs and are inserted into small holes on a 304 stainless steel flange at the outer end of the front axle; the hammerheads of the rare-earth permanent magnet ball hammers are inserted into the opposite magnetic pole shells of their corresponding rare-earth permanent magnet hemispherical hammer shells.

Description

Technical fields:

[0001] This invention relates to a rotation and steering device for a four-wheel drive vehicle. Background technology:

[0002] Existing four-wheel drive vehicles are all pure electric vehicles or hybrid vehicles. The engine and rear electric motor drive the two rear wheels via a rear continuously variable transmission (CVT), while two front electric motors drive the two front wheels respectively, using the speed difference between the two front wheels to achieve steering. The speed adjustment range of the two front electric motors is limited to 40%. Beyond this range, efficiency drops too much and becomes inefficient. If each of the two front electric motors were equipped with a separate front CVT, the CVT would be bulky and lack precision. If either of the two front electric motors or the two front CVTs malfunctions, the car will break down. Summary of the Invention:

[0003] The steering and rotation system of a four-wheel drive vehicle. A steering sensor is mounted below the steering wheel; the outer sections of the two front wheel axles are fitted with the front wheels, and the middle sections with the front wheel bearings. Driven gears on the inner ends of the two front axles mesh with drive gears on the shafts of two front permanent magnet synchronous motors. Two front axle bearings are mounted near the outer ends of the two front axles. An upper movable steel plate is mounted on the front wheel bearing housing, and an upper fixed steel plate is mounted on top of the front wheel bearing housing. The upper movable steel plate and the upper fixed steel plate are hinged. A hinge welded to the upper movable steel plate passes upward through the bearing on the upper fixed steel plate and is fitted with a steering worm gear. A lower movable steel plate is mounted below the front wheel bearing housing, and a lower fixed steel plate is mounted below the front wheel bearing housing. The lower movable steel plate and the lower fixed steel plate are hinged. A hinge welded to the lower movable steel plate passes downward through the bearing on the lower fixed steel plate. The middle section of the steering worm gear, equipped with a steering gear, has two screws that mesh with the left and right steering worm wheels. The output gear of the servo motor meshes with the steering gear on the steering worm gear. The rear screw of the engine's transmission worm gear meshes with the power worm wheel on the rear axle. A 304 stainless steel flange is installed at the inner end of the front wheel axle. The handles of several rare-earth permanent magnet ball hammers pass through their respective springs and are inserted into a ring of small holes on the 304 stainless steel flange at the inner end of the front wheel axle. A 304 stainless steel flange is installed at the outer end of the front axle. The handles of several rare-earth permanent magnet hemispherical hammers pass through their respective springs and are inserted into a ring of small holes on the 304 stainless steel flange at the outer end of the front axle. The hammerheads of the rare-earth permanent magnet ball hammers are inserted into the opposite-polarity magnetic pole shells of the corresponding rare-earth permanent magnet hemispherical hammer shells. A spring rubber tube filled with lubricating oil is installed between the front wheel bearing housing and the front axle bearing housing. The rotation of the rear wheels and the steering mechanism are structurally similar.

[0004] The control method for the rotation and steering system of a four-wheel drive vehicle. The engine rotates, which drives the power worm gear on the rear axle via the screw at the rear end of the transmission worm. The rear axle's rotation, in turn, drives the rear wheels. Alternatively, two front permanent magnet synchronous motors rotate, and two drive gears, through two driven gears, drive the two front axles. Each front axle's rotation, in turn, drives the two front wheels. On highways, if the turning radius is large and the driver's steering wheel movement is small, the steering sensor transmits a signal to the computer controller. The computer controller adjusts the speed of the two permanent magnet synchronous motors, creating a speed difference between the two front wheels, allowing the car to make a large-radius turn. On highways, if the turning radius is small, or when parking in a garage, the driver turns the steering wheel a large distance. The steering sensor transmits a signal to the computer controller, which adjusts the speed of two permanent magnet synchronous motors to create a speed difference between the two front wheels. At the same time, the computer controller sends commands to the servo motors next to the front axle and the rear axle assembly, causing them to rotate in opposite directions by a set angle. This rotation drives the steering worm gears next to the front axle and the rear axle assembly through gears. The rotation of the steering worm gear next to the front axle drives the two worm gears above the two front axles to rotate, causing the two front wheels to tilt at a set angle. Simultaneously, the rotation of the steering worm gear next to the rear axle drives the two worm gears above the rear axle to tilt the two rear wheels at a set angle. The tilting direction of the two front wheels is opposite to that of the two rear wheels. The rare-earth permanent magnet ball hammer and its corresponding rare-earth permanent magnet hemispherical hammer shell on the outward bending side of the rotation and steering device extend from their respective 304 stainless steel flange holes under the action of springs and the attraction of opposite magnetic fields. The hammerhead of the rare-earth permanent magnet ball hammer slides within the opposite magnetic pole shell of the corresponding rare-earth permanent magnet hemispherical hammer shell, forming an outward angle of less than 45°. Simultaneously, the rare-earth permanent magnet ball hammer and its corresponding rare-earth permanent magnet hemispherical hammer shell on the inward bending side of the rotation and steering device are pressed into their respective 304 stainless steel flange holes under the action of full pressure and the attraction of opposite magnetic fields. The hammerhead of the rare-earth permanent magnet ball hammer slides within the opposite magnetic pole shell of the corresponding rare-earth permanent magnet hemispherical hammer shell, forming an inward angle of less than 45°. As the wheel rotates, a set of rare-earth permanent magnet ball hammers and their corresponding rare-earth permanent magnet hemispherical hammer shells on the outward-curving side of the rotation and steering device extend from their respective 304 stainless steel flange holes under the action of springs and the attraction of opposite magnetic fields. The hammerheads of this set of rare-earth permanent magnet ball hammers slide within the opposite magnetic pole shells of their corresponding rare-earth permanent magnet hemispherical hammer shells, forming a large outward angle of less than 45°. As the wheel continues to rotate, the set of rare-earth permanent magnet ball hammers and their corresponding rare-earth permanent magnet hemispherical hammer shells rotate downwards. Under full pressure and the attraction of opposite magnetic fields, the set of rare-earth permanent magnet ball hammers and their corresponding rare-earth permanent magnet hemispherical hammer shells are pressed into their respective 304 stainless steel flange holes. The hammerheads of this set of rare-earth permanent magnet ball hammers slide within the opposite magnetic pole shells of their corresponding rare-earth permanent magnet hemispherical hammer shells, forming a medium forward angle of less than 45°.As the wheel continues to rotate, the set of rare-earth permanent magnet ball hammers and rare-earth permanent magnet hemispherical hammer shells of the rotation and steering device rotate inward. Under the action of full pressure and the attraction of opposite magnetic fields, the set of rare-earth permanent magnet ball hammers and their corresponding rare-earth permanent magnet hemispherical hammer shells are pressed into their respective 304 stainless steel flange holes. The hammerheads of the set of rare-earth permanent magnet ball hammers slide in the opposite magnetic pole shells of the corresponding rare-earth permanent magnet hemispherical hammer shells, forming a large inward angle of less than 45°. As the wheel continues to rotate, the set of rare-earth permanent magnet ball hammers and rare-earth permanent magnet hemispherical hammer shells of the rotation and steering device rotate upward. Under the action of springs and the attraction of opposite magnetic fields, the set of rare-earth permanent magnet ball hammers and their corresponding rare-earth permanent magnet hemispherical hammer shells on the forward-bending side of the rotation and steering device extend out of their respective 304 stainless steel flange holes. The hammerheads of the set of rare-earth permanent magnet ball hammers slide in the opposite magnetic pole shells of the corresponding rare-earth permanent magnet hemispherical hammer shells, forming a medium forward angle of less than 45°. As the wheels rotate, the set of rare-earth permanent magnet ball hammers and rare-earth permanent magnet hemispherical hammer shells of the rotation and steering device rotate to the outside. On the forward-bending side of the rotation and steering device, the set of rare-earth permanent magnet ball hammers and their corresponding rare-earth permanent magnet hemispherical hammer shells extend from their respective 304 stainless steel flange holes under the action of springs and the attraction of opposite magnetic fields. The hammerheads of the set of rare-earth permanent magnet ball hammers slide within the opposite magnetic pole shells of their corresponding rare-earth permanent magnet hemispherical hammer shells, forming an outward angle of less than 45°. This cycle repeats, allowing the car to turn with a smaller radius. Attached image description:

[0005] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0006] Figure 1 This is a top view of the rotation and steering device of the four-wheel drive vehicle of the present invention.

[0007] Figure 2 This is a vertical sectional view of the left front wheel rotation and steering device in this invention. Detailed implementation method:

[0008] Figure 1 and Figure 2The diagram shows the rotation and steering mechanism of a four-wheel drive vehicle. A steering sensor is mounted below the steering wheel. Front wheels 1 are mounted on the outer sections of the two front wheel axles, and front wheel bearings are mounted on the middle sections. Driven gears 6 mounted on the inner ends of the two front axles 7 mesh with driving gears 5 mounted on the shafts of the two front permanent magnet synchronous motors 3. Two front axle bearings are mounted near the outer ends of the two front axles 7. An upper movable steel plate 14 is mounted on the front wheel bearing housing, and an upper fixed steel plate 16 is mounted on the same housing. The upper movable steel plate 14 and the upper fixed steel plate 16 are hinged. The hinge welded to the upper movable steel plate 14 passes axially upward through the bearing on the upper fixed steel plate 16 and is then mounted on a steering worm gear 11. A lower movable steel plate 15 is mounted below the front wheel bearing housing, and a lower fixed steel plate 17 is mounted therebelow. The lower movable steel plate 15 and the lower fixed steel plate 17 are hinged. The hinge welded to the lower movable steel plate 15 passes axially downward through the bearing on the lower fixed steel plate 17. The steering worm 12, with its steering gear in the middle section, has two screws that mesh with the left and right steering worm wheels 11. The output gear of the servo motor 13 meshes with the steering gear on the steering worm 12. The rear screw of the transmission worm 9 of the engine 4 meshes with the power worm wheel 10 on the rear axle 8. A 304 stainless steel flange 20 is installed at the inner end of the front wheel axle. The handles of several rare earth permanent magnet ball hammers 18 pass through their respective springs and are inserted into a ring of small holes on the 304 stainless steel flange 20 installed at the inner end of the front wheel axle. A 304 stainless steel flange 20 is installed at the outer end of the front axle. The handles of several rare earth permanent magnet hemispherical shells 19 are inserted through their respective springs into a ring of small holes on the 304 stainless steel flange 20 installed at the outer end of the front axle. The hammerheads of the rare earth permanent magnet ball hammers 18 are inserted into the opposite magnetic pole shells of the corresponding rare earth permanent magnet hemispherical hammer shells 19. A spring rubber tube is installed between the front wheel bearing housing and the front axle bearing housing. The spring rubber tube contains lubricating oil. The rotation of the rear wheel is similar in structure to the steering mechanism of the front wheel.

[0009] Figure 1 and Figure 2The diagram illustrates the control method for the rotation and steering system of a four-wheel drive vehicle. The engine 4 rotates, driving the power worm gear 10 on the rear axle 8 via the rear screw of the transmission worm 9. The rotation of the rear axle 8, in turn, drives the rear wheels 2 through the rotation and steering system on the rear axle 8. Two front permanent magnet synchronous motors 3 rotate, and two drive gears 5 rotate, driving the two front axles 7 via two driven gears 6. The rotation of the two front axles 7, through their respective rotations and steering systems, drives the two front wheels 1. On highways, if the turning radius is large and the driver's steering wheel rotation is small, the steering sensor transmits a signal to the computer controller. The computer controller adjusts the speed of the two permanent magnet synchronous motors 3, creating a speed difference between the two front wheels, allowing the vehicle to make a large-radius turn. On highways, if the turning radius is small, or when parking in a garage, the driver turns the steering wheel a large distance. The steering sensor transmits the signal to the computer controller, which adjusts the speed of the two permanent magnet synchronous motors 3 to create a speed difference between the two front wheels. At the same time, the computer controller sends commands to the servo motors 13 next to the front axle 7 and the rear axle group 8, causing the two servo motors 13 to rotate in opposite directions by a set angle. This rotation drives the steering worm gears 12 next to the front axle 7 and the rear axle group 8 to rotate. The rotation of the steering worm gears 12 next to the front axle 7 drives the two worm wheels 11 above the two front axles 7 to rotate, causing the two front wheels 1 to tilt at a set angle. At the same time, the rotation of the steering worm gears 12 next to the rear axle 8 drives the two worm wheels 11 above the rear axle 8 to rotate, causing the two rear wheels 2 to tilt at a set angle. The tilting direction of the two front wheels 1 is opposite to the tilting direction of the two rear wheels 2. The rare-earth permanent magnet ball hammer 18 and its corresponding rare-earth permanent magnet hemispherical hammer shell 19 on the outward bending side of the rotation and steering device extend from their respective 304 stainless steel flange 20 holes under the action of springs and the attraction of opposite magnetic fields. The hammer head of the rare-earth permanent magnet ball hammer 18 slides in the opposite magnetic pole shell of the corresponding rare-earth permanent magnet hemispherical hammer shell 19, forming an outward angle of less than 45°. At the same time, the rare-earth permanent magnet ball hammer 18 and its corresponding rare-earth permanent magnet hemispherical hammer shell 19 on the inward bending side of the rotation and steering device are pressed into their respective 304 stainless steel flange 20 holes under the action of full pressure and the attraction of opposite magnetic fields. The hammer head of the rare-earth permanent magnet ball hammer 18 slides in the opposite magnetic pole shell of the corresponding rare-earth permanent magnet hemispherical hammer shell 19, forming an inward angle of less than 45°. As the wheel rotates, a set of rare earth permanent magnet ball hammers 18 and corresponding rare earth permanent magnet hemispherical hammer shells 19 on the outward bending side of the rotation and steering device extend out of their respective 304 stainless steel flange 20 holes under the action of springs and the attraction of opposite magnetic fields. The hammerheads of the set of rare earth permanent magnet ball hammers 18 slide in the opposite magnetic pole shells of the corresponding rare earth permanent magnet hemispherical hammer shells 19, forming a large outward angle of less than 45°.As the wheel continues to rotate, the set of rare-earth permanent magnet ball hammers 18 and rare-earth permanent magnet hemispherical hammer shells 19 of the rotation and steering device rotate downwards. Under the action of full pressure and the attraction of opposite magnetic fields, the set of rare-earth permanent magnet ball hammers 18 and their corresponding rare-earth permanent magnet hemispherical hammer shells 19 are pressed into the holes of their respective 304 stainless steel flanges 20. The hammer head of the set of rare-earth permanent magnet ball hammers 18 slides in the opposite magnetic pole shell of the corresponding rare-earth permanent magnet hemispherical hammer shell 19, forming a medium forward angle of less than 45°. As the wheel continues to rotate, the set of rare-earth permanent magnet ball hammers 18 and rare-earth permanent magnet hemispherical hammer shells 19 of the rotation and steering device rotate inwards. Under the action of full pressure and the attraction of opposite magnetic fields, the set of rare-earth permanent magnet ball hammers 18 and their corresponding rare-earth permanent magnet hemispherical hammer shells 19 are pressed into the holes of their respective 304 stainless steel flanges 20. The hammer head of the set of rare-earth permanent magnet ball hammers 18 slides in the opposite magnetic pole shell of the corresponding rare-earth permanent magnet hemispherical hammer shell 19, forming a large inward angle of less than 45°. As the wheel continues to rotate, the set of rare earth permanent magnet ball hammers 18 and rare earth permanent magnet hemispherical hammer shells 19 of the rotation and steering device rotate upwards. Under the action of springs and the attraction of opposite magnetic fields, the set of rare earth permanent magnet ball hammers 18 and the corresponding rare earth permanent magnet hemispherical hammer shells 19 on the forward bending side of the rotation and steering device extend out from the holes of their respective 304 stainless steel flanges 20. The hammer head of the set of rare earth permanent magnet ball hammers 18 slides in the opposite magnetic pole shell of the corresponding rare earth permanent magnet hemispherical hammer shell 19, forming a medium forward angle of less than 45°. As the wheels rotate, the set of rare-earth permanent magnet ball hammers 18 and rare-earth permanent magnet hemispherical hammer shells 19 of the rotation and steering device rotate to the outside. On the forward-bending side of the rotation and steering device, the set of rare-earth permanent magnet ball hammers 18 and their corresponding rare-earth permanent magnet hemispherical hammer shells 19 extend from their respective 304 stainless steel flange holes 20 under the action of springs and the attraction of opposite magnetic fields. The hammerheads of the set of rare-earth permanent magnet ball hammers 18 slide within the opposite magnetic pole shells of the corresponding rare-earth permanent magnet hemispherical hammer shells 19, forming an outward angle of less than 45°. This cycle repeats, allowing the car to turn with a smaller radius.

Claims

1. The rotation and steering device of a four-wheel drive vehicle, with a steering sensor installed under the steering wheel; front wheels (1) are installed on the outer sections of the two front wheel axles, and front wheel bearings are installed in the middle sections. Driven gears (6) installed on the inner ends of the two front axles (7) mesh with the driving gears (5) installed on the shafts of the two front permanent magnet synchronous motors (3). Two front axle bearings are installed near the outer ends of the two front axles (7). An upper movable steel plate (14) is installed on the front wheel bearing housing, and an upper fixed steel plate (16) is installed on the front bearing housing. The upper movable steel plate (14) and the upper fixed steel plate (16) are hinged. The hinge welded to the upper movable steel plate (14) passes through the upper fixed steel plate (16) axially. A steering worm gear (11) is mounted on the rear of the bearing. A lower movable steel plate (15) is mounted below the front wheel bearing housing, and a lower fixed steel plate (17) is mounted below the front bearing housing. The lower movable steel plate (15) and the lower fixed steel plate (17) are hinged. The hinge welded to the lower movable steel plate (15) passes axially downward through the bearing on the lower fixed steel plate (17). The two screws of the steering worm (12) with the steering gear in the middle section mesh with the left and right steering worm gears (11). The output gear of the servo motor (13) meshes with the steering gear on the steering worm (12). The rear screw of the transmission worm (9) of the engine (4) meshes with the power worm gear (10) on the rear axle (8). The feature is that: The inner end of the front wheel axle is fitted with a 304 stainless steel flange (20). The handles of several rare earth permanent magnet ball hammers (18) pass through their respective springs and are inserted into a ring of small holes on the 304 stainless steel flange (20) fitted at the inner end of the front wheel axle. The outer end of the front axle is fitted with a 304 stainless steel flange (20). The handles of several rare earth permanent magnet hemispherical shell hammers (19) pass through their respective springs and are inserted into a ring of small holes on the 304 stainless steel flange (20) fitted at the outer end of the front axle. The hammerheads of the rare earth permanent magnet ball hammers (18) are inserted into the opposite magnetic pole shells of the corresponding rare earth permanent magnet hemispherical hammer shells (19). A spring rubber tube is installed between the front wheel bearing seat and the front axle bearing seat. The spring rubber tube is filled with lubricating oil. The rotation and steering mechanism of the rear wheel is similar in structure to that of the front wheel.

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