Movable connector arranged between front wheels and front axle of four-wheel-drive electric automobile

Abstract

The invention discloses a movable connector arranged between front wheels and a front axle of a four-wheel-drive electric automobile. A left front bearing is arranged at the left end of the left front axle, the right end of a left front metal round tube is fixed on a left front bearing seat, the left end of the left front metal round tube is fixedly connected with the right end of a left front rubber spring tube, and the left end of the left front rubber spring tube is fixed on a left front wheel bearing seat. A left spherical hammer is installed on the left front shaft through a spline, an arc groove is formed in a ball of the left spherical hammer, the section of the arc groove close to a hammer handle of the left spherical hammer is U-shaped, the other arc grooves are circles with notches, and a left spherical sliding block with a screw hole is arranged in each arc groove. A hammer handle of the left hemispherical shell hammer is fixed to the left front wheel, and the edge of a hemispherical shell of the left hemispherical shell hammer corresponds to the round hole. A left countersunk head screw penetrates through a round hole in the edge of a semispherical shell of the corresponding left semispherical shell hammer and is screwed into a screw hole of a left spherical sliding block in an arc groove in the corresponding left spherical hammer, and a left front wheel bearing is installed on a hammer handle of the left semispherical shell hammer. The left movable connector and the right movable connector of the front wheel are symmetrical.

Description

Technical Field:

[0001] The present invention relates to a movable connector installed between the front wheels and the front axle of a four-wheel drive electric vehicle. Background Art:

[0002] Existing four-wheel drive vehicles are all pure electric vehicles or hybrid vehicles. The engine and the rear motor drive the two rear wheels to rotate through a rear continuously variable transmission. Two front motors respectively drive the two front wheels to rotate, and steering is achieved by using the rotational speed difference between the two front wheels. The rotational speed adjustment range of the two front motors is 40%. After the rotational speed adjustment range of the two front motors reaches 40%, the efficiency drops too much and it is uneconomical. If a front continuously variable transmission is installed on each of the two front motors, the front continuously variable transmission is bulky and not precise enough. If either of the two front motors or the two front continuously variable transmissions fails, the vehicle will break down. Summary of the Invention:

[0003] An active connector is installed between the front wheels and the front axle of an all-wheel drive electric vehicle. A direction rotating shaft is installed under the steering wheel of the all-wheel drive electric vehicle, and a driving direction bevel gear is installed at the lower end of the direction rotating shaft. When turning the steering wheel to the left, the driving direction bevel gear can drive the steering control rod to move to the right through mechanical transmission. When turning the steering wheel to the right, the driving direction bevel gear can drive the steering control rod to move to the left through mechanical transmission. The left permanent magnet synchronous motor drives the left front axle to rotate, and a left front bearing is installed at the left end of the left front axle. The right end of the left front metal round tube is fixed on the left front bearing seat, the left end of the left front metal round tube is fixedly connected to the right end of the left front rubber skin spring tube, the left end of the left front rubber skin spring tube is fixed on the left front wheel bearing seat, and lubricating oil is filled in the left front metal round tube and the left front rubber skin spring tube. The left front upper bearing seat is fixed on the top of the left end of the left front metal round tube, the center hole of the left front upper bearing is equipped with a left front upper rotating shaft, the right end of the longitudinal upper left connecting steel plate of the left bogie is fixed on the left front upper rotating shaft, the right end of the longitudinal upper left connecting steel plate of the left bogie is fixed on the top of the left front wheel bearing seat, and the front upper end of the transverse frame of the left bogie is fixed on the left front upper rotating shaft; The left front lower bearing seat is fixed on the bottom of the left end of the left front metal round tube, the right end of the longitudinal lower left connecting steel plate of the left bogie is fixed on the left front lower rotating shaft, the right end of the longitudinal lower left connecting steel plate of the left bogie is fixed on the bottom of the left front wheel bearing seat, and the front lower end of the transverse frame of the left bogie is fixed on the left front lower rotating shaft. The left end of the steering control rod is hinged to the middle position of the vertical rod of the transverse frame of the left bogie. The right permanent magnet synchronous motor drives the right front axle to rotate, and a right front bearing is installed at the left end of the right front axle. The left end of the right front metal round tube is fixed on the right front bearing seat. The right end of the right front metal round tube is fixedly connected to the left end of the right front rubber skin spring tube, the right end of the right front rubber skin spring tube is fixed on the right front wheel bearing seat, and lubricating oil is filled in the right front metal round tube and the right front rubber skin spring tube. The right front upper bearing seat is fixed on the top of the left end of the right front metal round tube, the center hole of the right front upper bearing is equipped with a right front upper rotating shaft, the left end of the longitudinal upper right connecting steel plate of the right bogie is fixed on the right front upper rotating shaft, the left end of the longitudinal upper right connecting steel plate of the right bogie is fixed on the top of the right front wheel bearing seat, and the front upper end of the transverse frame of the right bogie is fixed on the right front upper rotating shaft. The right front lower bearing seat is fixed on the bottom of the right end of the right front metal round tube; The left end of the longitudinal lower right connecting steel plate of the right bogie is fixed on the right front lower rotating shaft, the left end of the longitudinal lower right connecting steel plate of the right bogie is fixed on the bottom of the right front wheel bearing seat, and the front lower end of the transverse frame of the right bogie is fixed on the right front lower rotating shaft. The right end of the steering control rod is hinged to the middle position of the vertical rod of the transverse frame of the right bogie. The male body of the left spline is installed on the hammer handle of the left ball, the female body of the left spline is at the left end of the left front axle, and the male body of the left spline on the hammer handle of the left spherical hammer is inserted into the female body of the middle spline at the left end of the left front axle and then fixed with a positioning screw. The left front upper rotating shaft, the center of the left spherical hammer, and the left front lower rotating shaft are on a straight line.On the spherical ball of the left spherical hammer, there are several arc-shaped grooves that are symmetric about the axis of the handle center line of the left spherical hammer handle. The cross-sections of the four arc-shaped grooves near the position of the left spherical hammer handle are U-shaped, and the cross-sections of the arc-shaped grooves in the remaining positions are circular with notches. Inside each arc-shaped groove on the spherical ball of the left spherical hammer, there is a left spherical slider with a screw hole. The left end of the handle of the left hemispherical shell hammer is fixed at the center position on the right side of the left front wheel hub. There are several round holes corresponding to the arc-shaped grooves on the left spherical hammer at the edge of the hemispherical shell of the left hemispherical shell hammer. The inner diameter of the hemispherical shell of the left hemispherical shell hammer is slightly larger than the outer diameter of the spherical ball of the left spherical hammer, and the hemispherical shell of the left hemispherical shell hammer is adapted to the spherical body of the left spherical hammer. Several left countersunk screws pass through several round holes on the edge of the hemispherical shell of the corresponding left hemispherical shell hammer and are screwed into the screw holes of the left spherical sliders inside the arc-shaped grooves on the corresponding left spherical hammer. The handle of the left hemispherical shell hammer is equipped with a left front wheel bearing. The handle of the right spherical hammer is equipped with the male body of the right spline. The female body of the right spline is at the right end of the right front axle. The male body of the right spline on the handle of the right spherical hammer is inserted into the female body of the right spline at the right end of the right front axle and then fixed with a positioning screw. The right front upper rotating shaft, the center of the spherical ball of the right spherical hammer, and the right front lower rotating shaft are on a straight line. On the spherical ball of the right spherical hammer, there are several arc-shaped grooves that are symmetric about the axis of the handle center line of the right spherical hammer handle. The cross-sections of the four arc-shaped grooves near the position of the right spherical hammer handle are U-shaped, and the cross-sections of the arc-shaped grooves in the remaining positions are circular with notches. Inside each arc-shaped groove on the spherical ball of the right spherical hammer, there is a right spherical slider with a screw hole. The right end of the handle of the right hemispherical shell hammer is fixed at the center position on the left side of the right front wheel hub. There are several round holes corresponding to the arc-shaped grooves on the spherical ball of the right spherical hammer at the edge of the hemispherical shell of the right hemispherical shell hammer. The inner diameter of the hemispherical shell of the right hemispherical shell hammer is slightly larger than the outer diameter of the spherical ball of the right spherical hammer, and the hemispherical shell of the right hemispherical shell hammer is adapted to the spherical body of the right spherical hammer. Several right countersunk screws pass through several round holes on the edge of the hemispherical shell of the corresponding right hemispherical shell hammer and are screwed into the screw holes of the right spherical sliders inside the arc-shaped grooves on the corresponding right spherical hammer. The handle of the right hemispherical shell hammer is equipped with a right front wheel bearing.

[0004] Usage method of the movable connector installed between the front wheels and the front axle of a four-wheel drive electric vehicle. When the four-wheel drive electric vehicle needs to turn left, the driver turns the steering wheel to the left so that the driving-direction bevel gear can drive the steering lever 11 to move to the right through mechanical transmission. The left bogie 10 rotates left by a corresponding angle around an axis passing through the left front upper rotating shaft, the center of the ball of the left spherical hammer 3, and the left front lower rotating shaft. The left front wheel rotates left by a corresponding angle. The right bogie rotates left by a corresponding angle around an axis passing through the right front upper rotating shaft, the center of the ball of the right spherical hammer, and the right front lower rotating shaft. The right front wheel rotates left by a corresponding angle. The control system makes the left permanent magnet synchronous motor rotate at a reduced speed and reduces the rotation speed of the left front axle 1. The left front axle 1 drives the left spherical hammer 3 to rotate. The left spherical hammer 3 drives the left hemispherical shell hammer 6 to rotate and makes the left front wheel rotate. The left spherical slider 4 makes a reciprocating movement with a corresponding amplitude and a reciprocating twist with a corresponding angle in the corresponding arc groove on the sphere of the left spherical hammer 3. The control system makes the right permanent magnet synchronous motor rotate at a constant speed and keeps the rotation speed of the right front axle unchanged. The right front axle drives the right spherical hammer to rotate. The right spherical hammer drives the right hemispherical shell hammer to rotate and makes the right front wheel rotate. The right spherical slider makes a reciprocating movement with a corresponding amplitude and a reciprocating twist with a corresponding angle in the corresponding arc groove on the sphere of the right spherical hammer. When the four-wheel drive electric vehicle needs to turn right, the driver turns the steering wheel to the right so that the driving-direction bevel gear can drive the steering lever 11 to move to the left through mechanical transmission. The left bogie 10 rotates right by a corresponding angle around an axis passing through the left front upper rotating shaft, the center of the ball of the left spherical hammer 3, and the left front lower rotating shaft. The left front wheel rotates right by a corresponding angle. The right bogie rotates right by a corresponding angle around an axis passing through the right front upper rotating shaft, the center of the ball of the right spherical hammer, and the right front lower rotating shaft. The right front wheel rotates right by a corresponding angle. The control system makes the left permanent magnet synchronous motor rotate at a constant speed and keeps the rotation speed of the left front axle 1 unchanged. The left front axle 1 drives the left spherical hammer 3 to rotate. The left spherical hammer 3 drives the left hemispherical shell hammer 6 to rotate and makes the left front wheel rotate. The left spherical slider 4 makes a reciprocating movement with a corresponding amplitude and a reciprocating twist with a corresponding angle in the corresponding arc groove on the sphere of the left spherical hammer 3. The control system reduces the rotation speed of the right permanent magnet synchronous motor and reduces the rotation speed of the right front axle. The right front axle drives the right spherical hammer to rotate. The right spherical hammer drives the right hemispherical shell hammer to rotate and makes the right front wheel rotate. The right spherical slider makes a reciprocating movement with a corresponding amplitude and a reciprocating twist with a corresponding angle in the corresponding arc groove on the sphere of the right spherical hammer. When the four-wheel drive electric vehicle needs to park and turn left, the driver turns the steering wheel to the left so that the driving-direction bevel gear can drive the steering lever 11 to move to the right through mechanical transmission. The left bogie 10 rotates left by a corresponding angle around an axis passing through the left front upper rotating shaft, the center of the ball of the left spherical hammer 3, and the left front lower rotating shaft. The left front wheel rotates left by a corresponding angle. The right bogie rotates left by a corresponding angle around an axis passing through the right front upper rotating shaft, the center of the ball of the right spherical hammer, and the right front lower rotating shaft. The right front wheel rotates left by a corresponding angle. The control system does not supply power to the left permanent magnet synchronous motor to make it rotate, and the control system makes the right permanent magnet synchronous motor rotate at a low speed.The right front axle drives the right spherical hammer to rotate. The right spherical hammer drives the right hemispherical shell hammer to rotate, causing the right front wheel to rotate. The right spherical slider makes a reciprocating movement with a corresponding amplitude and a reciprocating twist with a corresponding angle in the arc groove corresponding to the spherical ball of the right spherical hammer. The four-wheel drive electric vehicle can turn 90° around the left front wheel. When the four-wheel drive electric vehicle needs to park and turn right, the driver turns the steering wheel to the right, so that the driving direction bevel gear can drive the steering control rod 11 to move to the left through mechanical transmission. The left bogie 10 rotates to the right by a corresponding angle around the axis of the left front upper rotating shaft, the center of the spherical ball of the left spherical hammer 3, and the left front lower rotating shaft. The left front wheel rotates to the right by a corresponding angle. The right bogie rotates to the right by a corresponding angle around the axis of the right front upper rotating shaft, the center of the spherical ball of the right spherical hammer, and the right front lower rotating shaft. The right front wheel rotates to the right by a corresponding angle. The control system does not supply power to the right permanent magnet synchronous motor to rotate. The control system makes the left permanent magnet synchronous motor rotate at a low speed. The left front axle 1 drives the left spherical hammer 3 to rotate. The left spherical hammer 3 drives the left hemispherical shell hammer 6 to rotate, causing the left front wheel to rotate. The left spherical slider 4 makes a reciprocating movement with a corresponding amplitude and a reciprocating twist with a corresponding angle in the arc groove corresponding to the spherical ball of the left spherical hammer 3. The four-wheel drive electric vehicle can turn 90° around the right front wheel. BRIEF DESCRIPTION OF THE DRAWINGS:

[0005] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0006] Figure 1 is a cross-sectional view of the movable connector installed between the left front wheel and the left front axle when the four-wheel drive electric vehicle of the present invention is driving straight.

[0007] Figure 2 is a vertical sectional view A-A of the movable connector installed between the left front wheel and the left front axle when the four-wheel drive electric vehicle of the present invention is driving straight. SPECIFIC EMBODIMENTS:

[0008] Figure 1 and Figure 2As shown, there is a movable connector installed between the front wheels and the front axle of the four-wheel drive electric vehicle. Below the steering wheel of the four-wheel drive electric vehicle, there is a steering shaft, and at the lower end of the steering shaft, there is a driving bevel gear for direction. When turning the steering wheel to the left, the driving bevel gear for direction can drive the steering control rod 11 to move to the right through mechanical transmission. When turning the steering wheel to the right, the driving bevel gear for direction can drive the steering control rod 11 to move to the left through mechanical transmission. The left permanent magnet synchronous motor drives the left front axle 1 to rotate, and at the left end of the left front axle 1, there is a left front bearing 2. The right end of the left front metal round tube 8 is fixed on the left front bearing seat, and the left end of the left front metal round tube 8 is fixedly connected to the right end of the left front rubber spring tube 9. The left end of the left front rubber spring tube 9 is fixed on the left front wheel bearing seat. Inside the left front metal round tube 8 and the left front rubber spring tube 9, there is lubricating oil. The left front upper bearing seat is fixed at the top of the left end of the left front metal round tube 8. In the central hole of the left front upper bearing, there is a left front upper rotating shaft. The right end of the longitudinal upper left connecting steel plate of the left bogie 10 is fixed on the left front upper rotating shaft. The right end of the longitudinal upper left connecting steel plate of the left bogie 10 is fixed at the top of the left front wheel bearing seat. The front upper end of the transverse frame of the left bogie 10 is fixed on the left front upper rotating shaft. The left front lower bearing seat is fixed at the bottom of the left end of the left front metal round tube 8. The right end of the longitudinal lower left connecting steel plate of the left bogie 10 is fixed on the left front lower rotating shaft. The right end of the longitudinal lower left connecting steel plate of the left bogie 10 is fixed at the bottom of the left front wheel bearing seat. The front lower end of the transverse frame of the left bogie 10 is fixed on the left front lower rotating shaft. The left end of the steering control rod 11 is hinged at the middle position of the vertical rod of the transverse frame of the left bogie 10. The right permanent magnet synchronous motor drives the right front axle to rotate, and at the left end of the right front axle, there is a right front bearing. The left end of the right front metal round tube is fixed on the right front bearing seat. The right end of the right front metal round tube is fixedly connected to the left end of the right front rubber spring tube. The right end of the right front rubber spring tube is fixed on the right front wheel bearing seat. Inside the right front metal round tube and the right front rubber spring tube, there is lubricating oil. The right front upper bearing seat is fixed at the top of the left end of the right front metal round tube. In the central hole of the right front upper bearing, there is a right front upper rotating shaft. The left end of the longitudinal upper right connecting steel plate of the right bogie is fixed on the right front upper rotating shaft. The left end of the longitudinal upper right connecting steel plate of the right bogie is fixed at the top of the right front wheel bearing seat. The front upper end of the transverse frame of the right bogie is fixed on the right front upper rotating shaft. The right front lower bearing seat is fixed at the bottom of the right end of the right front metal round tube. The left end of the longitudinal lower right connecting steel plate of the right bogie is fixed on the right front lower rotating shaft. The left end of the longitudinal lower right connecting steel plate of the right bogie is fixed at the bottom of the right front wheel bearing seat. The front lower end of the transverse frame of the right bogie is fixed on the right front lower rotating shaft. The right end of the steering control rod is hinged at the middle position of the vertical rod of the transverse frame of the right bogie. On the hammer handle of the left spherical hammer 3, there is a male body of a left spline. The female body of the left spline is at the left end of the left front axle 1. The male body of the left spline on the hammer handle of the left spherical hammer 3 is inserted into the middle spline female body at the left end of the left front axle 1, and then fixed with a positioning screw. The left front upper rotating shaft, the center of the left spherical hammer 3, and the left front lower rotating shaft are on a straight line.On the spherical ball of the left spherical hammer 3, there are several arc-shaped grooves symmetrically arranged with the axis line of the handle of the left spherical hammer 3 as the axis. The cross-sections of the four arc-shaped grooves near the handle of the left spherical hammer 3 are U-shaped, and the cross-sections of the arc-shaped grooves in the remaining positions are circular with notches. Inside each arc-shaped groove on the spherical ball of the left spherical hammer 3, there is a left spherical slider 4 with a screw hole. The left end of the handle of the left hemispherical shell hammer 6 is fixed at the center position on the right side of the left front wheel hub. There are several round holes corresponding to the arc-shaped grooves on the left spherical hammer 3 at the edge of the hemispherical shell of the left hemispherical shell hammer 6. The inner diameter of the hemispherical shell of the left hemispherical shell hammer 6 is slightly larger than the outer diameter of the spherical ball of the left spherical hammer 3, and the hemispherical shell of the left hemispherical shell hammer 6 is adapted to the spherical body of the left spherical hammer 3. Several left countersunk screws 5 pass through the several round holes on the edge of the hemispherical shell of the corresponding left hemispherical shell hammer 6 and are screwed into the screw holes of the left spherical sliders 4 inside the arc-shaped grooves on the corresponding left spherical hammer 3. A left front wheel bearing 7 is installed on the handle of the left hemispherical shell hammer 6. On the handle of the right spherical hammer, there is a male body of a right spline. The female body of the right spline is at the right end of the right front axle. The male body of the right spline on the handle of the right spherical hammer is inserted into the female body of the right spline at the right end of the right front axle, and then fixed with a positioning screw. The right front upper rotating shaft, the center of the ball of the right spherical hammer, and the right front lower rotating shaft are on a straight line. On the spherical ball of the right spherical hammer, there are several arc-shaped grooves symmetrically arranged with the axis line of the handle of the right spherical hammer as the axis. The cross-sections of the four arc-shaped grooves near the handle of the right spherical hammer are U-shaped, and the cross-sections of the several arc-shaped grooves in the remaining positions are circular with notches. Inside each arc-shaped groove on the spherical ball of the right spherical hammer, there is a right spherical slider with a screw hole. The right end of the handle of the right hemispherical shell hammer is fixed at the center position on the left side of the right front wheel hub. There are several round holes corresponding to the arc-shaped grooves on the spherical ball of the right spherical hammer at the edge of the hemispherical shell of the right hemispherical shell hammer. The inner diameter of the hemispherical shell of the right hemispherical shell hammer is slightly larger than the outer diameter of the spherical ball of the right spherical hammer, and the hemispherical shell of the right hemispherical shell hammer is adapted to the spherical body of the right spherical hammer. Several right countersunk screws pass through the several round holes on the edge of the hemispherical shell of the corresponding right hemispherical shell hammer and are screwed into the screw holes of the right spherical sliders inside the arc-shaped grooves on the corresponding right spherical hammer. A right front wheel bearing is installed on the handle of the right hemispherical shell hammer.

[0009] Figure 1 and Figure 2As shown, the usage method of the movable connector installed between the front wheels and the front axle of the four-wheel drive electric vehicle. When the four-wheel drive electric vehicle needs to turn left, the driver turns the steering wheel to the left, so that the driving direction bevel gear can drive the steering control rod 11 to move to the right through mechanical transmission. The left bogie 10 rotates left by a corresponding angle around the axis of the left front upper rotating shaft, the center of the left spherical hammer 3, and the left front lower rotating shaft. The left front wheel rotates left by a corresponding angle. The right bogie rotates left by a corresponding angle around the axis of the right front upper rotating shaft, the center of the right spherical hammer, and the right front lower rotating shaft. The right front wheel rotates left by a corresponding angle. The control system makes the left permanent magnet synchronous motor rotate at a reduced speed and reduces the rotation speed of the left front axle 1. The left front axle 1 drives the left spherical hammer 3 to rotate. The left spherical hammer 3 drives the left hemispherical shell hammer 6 to rotate and makes the left front wheel rotate. The left spherical slider 4 makes a reciprocating movement with a corresponding amplitude and a reciprocating twist with a corresponding angle in the corresponding arc groove on the sphere of the left spherical hammer 3. The control system makes the right permanent magnet synchronous motor rotate at a constant speed and keeps the rotation speed of the right front axle unchanged. The right front axle drives the right spherical hammer to rotate. The right spherical hammer drives the right hemispherical shell hammer to rotate and makes the right front wheel rotate. The right spherical slider makes a reciprocating movement with a corresponding amplitude and a reciprocating twist with a corresponding angle in the corresponding arc groove on the sphere of the right spherical hammer. When the four-wheel drive electric vehicle needs to turn right, the driver turns the steering wheel to the right, so that the driving direction bevel gear can drive the steering control rod 11 to move to the left through mechanical transmission. The left bogie 10 rotates right by a corresponding angle around the axis of the left front upper rotating shaft, the center of the left spherical hammer 3, and the left front lower rotating shaft. The left front wheel rotates right by a corresponding angle. The right bogie rotates right by a corresponding angle around the axis of the right front upper rotating shaft, the center of the right spherical hammer, and the right front lower rotating shaft. The right front wheel rotates right by a corresponding angle. The control system makes the left permanent magnet synchronous motor rotate at a constant speed and keeps the rotation speed of the left front axle 1 unchanged. The left front axle 1 drives the left spherical hammer 3 to rotate. The left spherical hammer 3 drives the left hemispherical shell hammer 6 to rotate and makes the left front wheel rotate. The left spherical slider 4 makes a reciprocating movement with a corresponding amplitude and a reciprocating twist with a corresponding angle in the corresponding arc groove on the sphere of the left spherical hammer 3. The control system reduces the rotation speed of the right permanent magnet synchronous motor and reduces the rotation speed of the right front axle. The right front axle drives the right spherical hammer to rotate. The right spherical hammer drives the right hemispherical shell hammer to rotate and makes the right front wheel rotate. The right spherical slider makes a reciprocating movement with a corresponding amplitude and a reciprocating twist with a corresponding angle in the corresponding arc groove on the sphere of the right spherical hammer. When the four-wheel drive electric vehicle needs to park and turn left, the driver turns the steering wheel to the left, so that the driving direction bevel gear can drive the steering control rod 11 to move to the right through mechanical transmission. The left bogie 10 rotates left by a corresponding angle around the axis of the left front upper rotating shaft, the center of the left spherical hammer 3, and the left front lower rotating shaft. The left front wheel rotates left by a corresponding angle. The right bogie rotates left by a corresponding angle around the axis of the right front upper rotating shaft, the center of the right spherical hammer, and the right front lower rotating shaft. The right front wheel rotates left by a corresponding angle. The control system does not supply power to the left permanent magnet synchronous motor to rotate, and the control system makes the right permanent magnet synchronous motor rotate at a low speed.The right front axle drives the right spherical hammer to rotate. The right spherical hammer drives the right hemispherical shell hammer to rotate, causing the right front wheel to rotate. The right spherical slider makes a reciprocating movement with a corresponding amplitude and a reciprocating twist with a corresponding angle in the arc groove corresponding to the spherical ball of the right spherical hammer. The four-wheel drive electric vehicle can turn 90° around the left front wheel. When the four-wheel drive electric vehicle needs to park and turn right, the driver turns the steering wheel to the right, enabling the driving bevel gear to drive the steering control rod 11 to move to the left through mechanical transmission. The left bogie 10 rotates to the right by a corresponding angle around the axis passing through the left front upper rotating shaft, the center of the spherical ball of the left spherical hammer 3, and the left front lower rotating shaft. The left front wheel rotates to the right by a corresponding angle. The right bogie rotates to the right by a corresponding angle around the axis passing through the right front upper rotating shaft, the center of the spherical ball of the right spherical hammer, and the right front lower rotating shaft. The right front wheel rotates to the right by a corresponding angle. The control system does not supply power to the right permanent magnet synchronous motor to rotate. The control system makes the left permanent magnet synchronous motor rotate at a low speed. The left front axle 1 drives the left spherical hammer 3 to rotate. The left spherical hammer 3 drives the left hemispherical shell hammer 6 to rotate, causing the left front wheel to rotate. The left spherical slider 4 makes a reciprocating movement with a corresponding amplitude and a reciprocating twist with a corresponding angle in the arc groove corresponding to the spherical ball of the left spherical hammer 3. The four-wheel drive electric vehicle can turn 90° around the right front wheel.

Claims

1. An active connector is installed between the front wheels and the front axle of a four-wheel drive electric vehicle. A direction rotating shaft is installed under the steering wheel of the four-wheel drive electric vehicle. A driving direction bevel gear is installed at the lower end of the direction rotating shaft. When turning the steering wheel to the left, the driving direction bevel gear can drive the steering control rod (11) to move to the right through mechanical transmission. When turning the steering wheel to the right, the driving direction bevel gear can drive the steering control rod (11) to move to the left through mechanical transmission; The left permanent magnet synchronous motor drives the left front axle (1) to rotate. The left front bearing (2) is installed at the left end of the left front axle (1). The right end of the left front metal round tube (8) is fixed on the left front bearing seat. The left end of the left front metal round tube (8) is fixedly connected to the right end of the left front rubber leather spring tube (9). The left end of the left front rubber leather spring tube (9) is fixed on the left front wheel bearing seat. Lubricating oil is installed inside the left front metal round tube (8) and the left front rubber leather spring tube (9); The left front upper bearing seat is fixed at the top of the left end of the left front metal round tube (8). The left front upper rotating shaft is installed in the central hole of the left front upper bearing. The right end of the longitudinal upper left connecting steel plate of the left bogie (10) is fixed on the left front upper rotating shaft. The right end of the longitudinal upper left connecting steel plate of the left bogie (10) is fixed on the top of the left front wheel bearing seat. The front upper end of the transverse frame of the left bogie (10) is fixed on the left front upper rotating shaft. The left front lower bearing seat is fixed at the bottom of the left end of the left front metal round tube (8). The right end of the longitudinal lower left connecting steel plate of the left bogie (10) is fixed on the left front lower rotating shaft. The right end of the longitudinal lower left connecting steel plate of the left bogie (10) is fixed on the bottom of the left front wheel bearing seat. The front lower end of the transverse frame of the left bogie (10) is fixed on the left front lower rotating shaft. The left end of the steering control rod (11) is hinged to the middle position of the vertical rod of the transverse frame of the left bogie (10); The right permanent magnet synchronous motor drives the right front axle to rotate. The right front bearing is installed at the left end of the right front axle. The left end of the right front metal round tube is fixed on the right front bearing seat. The right end of the right front metal round tube is fixedly connected to the left end of the right front rubber leather spring tube. The right end of the right front rubber leather spring tube is fixed on the right front wheel bearing seat. Lubricating oil is installed inside the right front metal round tube and the right front rubber leather spring tube; The right front upper bearing seat is fixed at the top of the left end of the right front metal round tube. The right front upper rotating shaft is installed in the central hole of the right front upper bearing. The left end of the longitudinal upper right connecting steel plate of the right bogie is fixed on the right front upper rotating shaft. The left end of the longitudinal upper right connecting steel plate of the right bogie is fixed on the top of the right front wheel bearing seat. The front upper end of the transverse frame of the right bogie is fixed on the right front upper rotating shaft. The right front lower bearing seat is fixed at the bottom of the right end of the right front metal round tube. The left end of the longitudinal lower right connecting steel plate of the right bogie is fixed on the right front lower rotating shaft. The left end of the longitudinal lower right connecting steel plate of the right bogie is fixed on the bottom of the right front wheel bearing seat. The front lower end of the transverse frame of the right bogie is fixed on the right front lower rotating shaft. The right end of the steering control rod is hinged to the middle position of the vertical rod of the transverse frame of the right bogie; It is characterized in that: The hammer handle of the left spherical hammer (3) is equipped with a male body with a left spline. The female body of the left spline is at the left end of the left front axle (1). The male body of the left spline on the hammer handle of the left spherical hammer (3) is inserted into the female medium spline at the left end of the left front axle (1), and then fixed with a positioning screw. The left front upper rotating shaft, the center of the ball of the left spherical hammer (3), and the left front lower rotating shaft are on a straight line. There are several arc grooves on the sphere of the left spherical hammer (3) that are symmetrically arranged with the center line of the hammer handle of the left spherical hammer (3) as the axis. The cross-sections of the four arc grooves near the hammer handle of the left spherical hammer (3) are U-shaped, and the cross-sections of the arc grooves in other positions are circular with notches. There is a left spherical slider (4) with a threaded hole in each arc groove on the sphere of the left spherical hammer (3); the left end of the hammer handle of the left hemispherical shell hammer (6) is fixed at the center position on the right side of the left front wheel hub. There are several round holes on the edge of the hemispherical shell of the left hemispherical shell hammer (6) that correspond to the arc grooves on the left spherical hammer (3). The inner diameter of the hemispherical shell of the left hemispherical shell hammer (6) is slightly larger than the outer diameter of the ball of the left spherical hammer (3). The hemispherical shell of the left hemispherical shell hammer (6) is adapted to the sphere of the left spherical hammer (3). Several left countersunk screws (5) pass through several round holes on the edge of the hemispherical shell of the corresponding left hemispherical shell hammer (6) and are screwed into the threaded holes of the left spherical sliders (4) in the corresponding arc grooves on the left spherical hammer (3). The hammer handle of the left hemispherical shell hammer (6) is equipped with a left front wheel bearing (7); the hammer handle of the right spherical hammer is equipped with a male body with a right spline. The female body of the right spline is at the right end of the right front axle. The male body of the right spline on the hammer handle of the right spherical hammer is inserted into the female right spline at the right end of the right front axle, and then fixed with a positioning screw. The right front upper rotating shaft, the center of the ball of the right spherical hammer, and the right front lower rotating shaft are on a straight line. There are several arc grooves on the sphere of the right spherical hammer that are symmetrically arranged with the center line of the hammer handle of the right spherical hammer as the axis. The cross-sections of the four arc grooves near the hammer handle of the right spherical hammer are U-shaped, and the cross-sections of the arc grooves in other positions are circular with notches. There is a right spherical slider with a threaded hole in each arc groove on the sphere of the right spherical hammer; the right end of the hammer handle of the right hemispherical shell hammer is fixed at the center position on the left side of the right front wheel hub. There are several round holes on the edge of the hemispherical shell of the right hemispherical shell hammer that correspond to the arc grooves on the sphere of the right spherical hammer. The inner diameter of the hemispherical shell of the right hemispherical shell hammer is slightly larger than the outer diameter of the ball of the right spherical hammer. The hemispherical shell of the right hemispherical shell hammer is adapted to the sphere of the right spherical hammer. Several right countersunk screws pass through several round holes on the edge of the hemispherical shell of the corresponding right hemispherical shell hammer and are screwed into the threaded holes of the right spherical sliders in the corresponding arc grooves on the right spherical hammer. The hammer handle of the right hemispherical shell hammer is equipped with a right front wheel bearing.

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