Continuously variable transmission and control method

Abstract

The invention discloses a continuously variable transmission and a control method. The engine drives the input rotating shaft to rotate, and the input gear drives the four-gear driven gear to rotate, so that the four-gear conical driving gear rotates. And the four-gear conical driving gear drives the four-gear conical driven gear to rotate, so that the four-gear conical friction wheel rotates. The computer control instrument supplies power to the motors pulled by the four-gear motors in turn, the steel wire ropes pulled by the four-gear motors pull the central sleeve, the central conical friction wheel makes contact with the four-gear conical friction wheels in turn, and the four-gear conical friction wheels drive the central conical friction wheel to rotate at a low speed in turn. And then the computer controller electrifies and combines the electromagnetic clutch to drive the load to rotate. The computer control instrument powers on the central gear speed reducing motor to enable the central gear speed reducing motor to rotate, and the contact position of the central conical friction wheel and the four-gear conical friction wheels is adjusted through a counting sensor arranged on a rotating shaft of the central gear speed reducing motor, so that the rotating speed of the output rotating shaft is adjusted.

Description

Technical field:

[0001] The invention relates to a continuously variable transmission and a control method. Background technology:

[0002] Both AT and CVI continuously variable transmissions are sliding friction continuously variable transmissions. Sliding friction will cause mechanical wear, power loss, and heat generation. The slip rate of sliding friction continuously variable transmissions is 0-40%. The greater the slip rate of sliding friction continuously variable transmissions, the faster the mechanical wear, the more power loss, and the more heat generated. Summary of the invention:

[0003] The continuously variable transmission mainly consists of an input shaft, an output shaft, a housing, an input gear, a first gear driven gear, a first gear bevel driving gear, a first gear bevel driven gear, a second gear driven gear, a second gear bevel driving gear, a second gear bevel driven gear, a third gear driven gear, a third gear bevel driving gear, a third gear bevel driven gear, a fourth gear driven gear 4, a fourth gear bevel driving gear, and a fourth gear bevel driven gear. An input gear is mounted on the input shaft, the input gear meshes with the first gear driven gear, the first gear driven gear is coaxial with the first gear bevel driving gear, and the first gear bevel driving gear meshes with the first gear bevel driven gear. The input gear meshes with the second gear driven gear, the second gear driven gear is coaxial with the second gear bevel driving gear, and the second gear bevel driving gear meshes with the second gear bevel driven gear. The input gear meshes with the third gear driven gear, the third gear driven gear is coaxial with the third gear bevel driving gear, and the third gear bevel driving gear 7 meshes with the third gear bevel driven gear. The input gear meshes with the fourth gear driven gear, the fourth gear driven gear is coaxial with the fourth gear bevel driving gear, and the fourth gear bevel driving gear meshes with the fourth gear bevel driven gear. A cross-buckle coupling is installed between the lower end of the spline mother body and the upper end of the output shaft, and a center conical friction wheel is installed on the upper section of the hollow spline male body. There is a center screw hole on the square column, the lower end of the square column is fixedly connected to the cylinder, the cylinder is inserted downward into the center bearing hole, and then the center bearing is fixed to the cylinder with an external retaining ring. The square column is inserted upward into the hollow spline male body, and then the center bearing is inserted into the lower end of the hollow spline male body, and then the center bearing is fixed to the lower end of the hollow spline male body with an internal retaining ring. The hollow spline male body is inserted downward into the spline mother body. The upper section of the center sleeve is a square tube, and the lower section of the center sleeve is an inner square and outer round tube. The inner square and outer round tube section of the center sleeve is inserted downward into the gap between the square column and the hollow spline male body. The lower section of the square tube of the center sleeve is equipped with an upper steel plate and a lower steel plate, and the upper steel plate and the lower steel plate sandwich the cross slot in the middle. The first gear motor traction is fixed on the frame inside the cross slot, and the output end of the steel wire rope of the first gear motor traction is fixed on the lower section of the square tube of the center sleeve between the upper steel plate and the lower steel plate. One end of the first gear return spring is fixed on the frame, and the other end of the first gear return spring is fixed on the upper section of the square tube of the center sleeve. The second gear motor traction is fixed on the frame inside the cross slot, and the output end of the steel wire rope of the second gear motor traction is fixed on the lower section of the square tube of the center sleeve between the upper steel plate and the lower steel plate. One end of the second gear return spring is fixed on the frame, and the other end of the second gear return spring is fixed on the upper section of the square tube of the center sleeve. The third-gear motor traction is fixed on the cross-slot inner frame, and the output end of the steel wire rope of the third-gear motor traction is fixed to the lower section of the square tube of the center sleeve between the upper steel plate and the lower steel plate. One end of the third-gear return spring is fixed to the frame, and the other end of the third-gear return spring is fixed to the upper section of the square tube of the center sleeve. The fourth-gear motor traction is fixed on the cross-slot inner frame, and the output end of the steel wire rope of the fourth-gear motor traction is fixed to the lower section of the square tube of the center sleeve between the inner upper steel plate and the lower steel plate. One end of the fourth-gear return spring is fixed to the frame, and the other end of the fourth-gear return spring is fixed to the upper section of the square tube of the center sleeve.The upper end of the square tube of the center sleeve is equipped with a center gear reduction motor, and a counting sensor is installed on the rotating shaft of the center gear reduction motor. The lower end of the rotating shaft of the center gear reduction motor is fixedly connected with the center screw, and the center screw passes through the center sleeve downward and is screwed into the center screw hole of the square column. There are first-gear conical friction wheels, second-gear conical friction wheels, third-gear conical friction wheels and fourth-gear conical friction wheels around the center conical friction wheel. The first-gear conical driven gear is coaxial with the first-gear conical friction wheel, the second-gear conical driven gear is coaxial with the second-gear conical friction wheel, the third-gear conical driven gear is coaxial with the third-gear conical friction wheel, and the fourth-gear conical driven gear is coaxial with the fourth-gear conical friction wheel. The structure of all conical friction wheels is as follows: there is a rotating shaft in the center of the friction wheel, and rubber is filled between the rotating shaft and the conical friction steel tube with longitudinal stripes.

[0004] Control method of continuously variable transmission. The center sleeve is in the center position of the cross groove under the pulling force of the first gear return spring, the second gear return spring, the third gear return spring and the fourth gear return spring, and the center conical friction wheel does not contact any conical friction wheel. The computer controller energizes the center gear reduction motor to rotate the center gear reduction motor, and adjusts the position of the center conical friction wheel through the counting sensor installed on the rotating shaft of the center gear reduction motor. The electromagnetic clutch is not energized and the electromagnetic clutch is in a disengaged state. The engine drives the input shaft to rotate, and the input gear drives the first gear driven gear to rotate, thereby rotating the first gear conical driving gear. The first gear conical driving gear drives the first gear conical driven gear to rotate, thereby rotating the first gear conical friction wheel. The input gear drives the second gear driven gear to rotate, thereby rotating the second gear conical driving gear. The second gear conical driving gear drives the second gear conical driven gear to rotate, thereby rotating the second gear conical friction wheel. The input gear drives the third gear driven gear to rotate, thereby rotating the third gear conical driving gear. The third gear bevel driving gear drives the third gear bevel driven gear 11 to rotate, thereby rotating the third gear bevel friction wheel. The input gear drives the fourth gear driven gear to rotate, thereby rotating the fourth gear bevel driving gear. The fourth gear bevel driving gear drives the fourth gear bevel driven gear to rotate, thereby rotating the fourth gear bevel friction wheel. It is necessary to shift to the first gear to adjust the rotation speed: the center sleeve is in the center position of the cross groove under the tension of the first gear return spring, the second gear return spring, the third gear return spring and the fourth gear return spring, and the center conical friction wheel does not contact any conical friction wheel. The computer controller energizes the center gear reduction motor to reverse the center gear reduction motor, and the center screw is screwed out of the center screw hole of the square column. The center conical friction wheel is adjusted to the lowest position through the counting sensor installed on the rotating shaft of the center gear reduction motor. The electromagnetic clutch is not energized and the electromagnetic clutch is in a disengaged state. The computer controller supplies power to the motor pulled by the first gear motor. The steel wire rope pulled by the first gear motor pulls the center sleeve, so that the center conical friction wheel contacts the lowest section of the first gear conical friction wheel. The first gear conical friction wheel drives the center conical friction wheel to rotate at a low speed. Then the computer controller energizes the electromagnetic clutch to engage and drive the load to rotate. The computer controller energizes the center gear reduction motor to make the center gear reduction motor rotate forward. The center screw is screwed into the center screw hole of the square column to make the square column move upward. The hollow spline male body moves upward through the center bearing, so that the center conical friction wheel moves upward. The position of the center conical friction wheel is adjusted through the counting sensor installed on the rotating shaft of the center gear reduction motor. The first gear conical friction wheel drives the center conical friction wheel to accelerate. It is necessary to shift to the second gear to adjust the rotation speed: the computer controller stops supplying power to the brake electromagnet pulled by the first gear motor. The center sleeve returns to the center position of the cross slot under the pulling force of the first gear return spring, the second gear return spring, the third gear return spring and the fourth gear return spring. The center conical friction wheel does not contact any conical friction wheel.The computer controller energizes the center gear reduction motor to reverse the center gear reduction motor, and the center screw is screwed out of the center screw hole of the square column. The center conical friction wheel is adjusted to the lowest position through the counting sensor installed on the rotating shaft of the center gear reduction motor. The computer controller stops supplying power to the electromagnetic clutch, and the electromagnetic clutch resumes the separation state. The computer controller supplies power to the motor pulled by the second-gear motor. The steel wire rope pulled by the second-gear motor pulls the center sleeve, so that the center conical friction wheel contacts the lowest section of the second-gear conical friction wheel. The second-gear conical friction wheel drives the center conical friction wheel to rotate at a low speed, and then the computer controller energizes the electromagnetic clutch to engage and drive the load to rotate. The computer controller energizes the center gear reduction motor to rotate forward, and the center screw is screwed into the center screw hole of the square column, so that the square column moves upward, and the hollow spline male body moves upward through the center bearing, so that the center conical friction wheel moves upward, and the position of the center conical friction wheel is adjusted through the counting sensor installed on the rotating shaft of the center gear reduction motor. The second-gear conical friction wheel drives the center conical friction wheel to accelerate rotation. The third gear is needed to adjust the rotation speed: the computer controller stops supplying power to the brake electromagnet pulled by the second gear motor, and the center sleeve is pulled back to the center position of the cross slot by the first gear return spring, the second gear return spring, the third gear return spring and the fourth gear return spring, and the center conical friction wheel does not contact any conical friction wheel. The computer controller energizes the center gear reduction motor to reverse the center gear reduction motor, and the center screw is screwed out of the center screw hole of the square column. The center conical friction wheel is adjusted to the lowest position through the counting sensor installed on the rotating shaft of the center gear reduction motor. The computer controller stops supplying power to the electromagnetic clutch, and the electromagnetic clutch returns to the separated state. The computer controller supplies power to the motor pulled by the third gear motor, and the steel wire rope pulled by the third gear motor pulls the center sleeve, so that the center conical friction wheel contacts the lowest section of the third gear conical friction wheel. The third gear conical friction wheel drives the center conical friction wheel to rotate at a low speed, and then the computer controller energizes the electromagnetic clutch to combine and drive the load to rotate. The computer controller energizes the center gear reduction motor to make it rotate forward, and the center screw is screwed into the center screw hole of the square column to make the square column move upward, and the hollow spline male body moves upward through the center bearing, so that the center conical friction wheel moves upward, and the position of the center conical friction wheel is adjusted through the counting sensor installed on the rotating shaft of the center gear reduction motor, and the third-gear conical friction wheel drives the center conical friction wheel to accelerate. It is necessary to shift to the fourth gear to adjust the rotation speed: the computer controller stops supplying power to the brake electromagnet pulled by the third-gear motor, and the center sleeve is in the center position of the cross slot under the pulling force of the first-gear reset spring, the second-gear reset spring, the third-gear reset spring and the fourth-gear reset spring, and the center conical friction wheel does not contact any conical friction wheel.The computer controller energizes the center gear reduction motor to reverse the center gear reduction motor, and the center screw is screwed out of the center screw hole of the square column. The center conical friction wheel is adjusted to the lowest position through the counting sensor installed on the rotating shaft of the center gear reduction motor. The computer controller stops supplying power to the electromagnetic clutch, and the electromagnetic clutch returns to the separation state. The computer controller supplies power to the motor pulled by the four-speed motor. The steel wire rope pulled by the four-speed motor pulls the center sleeve, so that the center conical friction wheel contacts the lowest section of the four-speed conical friction wheel. The four-speed conical friction wheel drives the center conical friction wheel to rotate at a low speed, and then the computer controller energizes the electromagnetic clutch to engage and drive the load to rotate. The computer controller energizes the center gear reduction motor to rotate forward, and the center screw is screwed into the center screw hole of the square column, so that the square column moves upward, and the hollow spline male body moves upward through the center bearing, so that the center conical friction wheel moves upward, and the position of the center conical friction wheel is adjusted through the counting sensor installed on the rotating shaft of the center gear reduction motor. The four-speed conical friction wheel drives the center conical friction wheel to accelerate rotation. Since the structures of all conical friction wheels are as follows: there is a rotating shaft in the center of the conical friction wheel, and rubber is filled between the rotating shaft and the conical friction steel tube with longitudinal stripes; when the central conical friction wheel contacts the first gear conical friction wheel, the second gear conical friction wheel, the third gear conical friction wheel and the fourth gear conical friction wheel under pressure, the contact surfaces of the central conical friction wheel and the first gear conical friction wheel, the second gear conical friction wheel, the third gear conical friction wheel and the fourth gear conical friction wheel are all concave, the contact area of ​​the central conical friction wheel and the first gear conical friction wheel, the second gear conical friction wheel, the third gear conical friction wheel and the fourth gear conical friction wheel is increased, the static friction force between the contact surfaces of the central conical friction wheel and the first gear conical friction wheel, the second gear conical friction wheel, the third gear conical friction wheel and the fourth gear conical friction wheel is increased, and no sliding friction will occur between the contact surfaces of the central conical friction wheel and the first gear conical friction wheel, the second gear conical friction wheel, the third gear conical friction wheel and the fourth gear conical friction wheel. Since the contact surfaces between the central conical friction wheel and the first-gear conical friction wheel, the second-gear conical friction wheel, the third-gear conical friction wheel and the fourth-gear conical friction wheel are rolling friction transmission, it will not cause mechanical wear, power loss or heat generation. It will cause mechanical wear, power loss or heat generation. Description of the drawings:

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

[0006] Figure 1 It is a cross-sectional view of the continuously variable transmission of the present invention in the left and right directions.

[0007] Figure 2 It is a cross-sectional view of the continuously variable transmission of the present invention in the front-rear direction. Specific implementation method:

[0008] Figure 1 and Figure 2As shown, the continuously variable transmission. The continuously variable transmission mainly consists of an input shaft, an output shaft, a housing, an input gear 0, a first gear driven gear 1, a first gear bevel driving gear 5, a first gear bevel driven gear 9, a second gear driven gear 2, a second gear bevel driving gear 6, a second gear bevel driven gear 10, a third gear driven gear 3, a third gear bevel driving gear 7, a third gear bevel driven gear 11, a fourth gear driven gear 4, a fourth gear bevel driving gear 8, and a fourth gear bevel driven gear 12. The input shaft is provided with an input gear 0, which meshes with the first gear driven gear 1, the first gear driven gear 1 is coaxial with the first gear bevel driving gear 5, and the first gear bevel driving gear 5 is meshed with the first gear bevel driven gear 9. The input gear 0 meshes with the second gear driven gear 2, the second gear driven gear 2 is coaxial with the second gear bevel driving gear 6, and the second gear bevel driving gear 6 is meshed with the second gear bevel driven gear 10. The input gear 0 meshes with the third gear driven gear 3, the third gear driven gear 3 is coaxial with the third gear bevel driving gear 7, and the third gear bevel driving gear 7 is meshed with the third gear bevel driven gear 11. The input gear 0 meshes with the fourth gear driven gear 4, the fourth gear driven gear 4 is coaxial with the fourth gear bevel driving gear 8, and the fourth gear bevel driving gear 8 is meshed with the fourth gear bevel driven gear 12. A cross-clinch coupling 31 is installed between the lower end of the spline mother body 30 and the upper end of the output shaft, and a center conical friction wheel 29 is installed on the upper section of the hollow spline male body 28. There is a center screw hole on the square column 27, the lower end of the square column 27 is fixedly connected to the cylinder, the cylinder is inserted downward into the center bearing hole, and then the center bearing is fixed to the cylinder with an external retaining ring. The square column 27 is inserted upward into the hollow spline male body 28, and then the center bearing is inserted into the inner lower end of the hollow spline male body 28, and then the center bearing is fixed to the inner lower end of the hollow spline male body 28 by an inner retaining ring. The hollow spline male body 28 is inserted downward into the spline mother body 30. The upper section of the center sleeve 26 is a square tube, and the lower section of the center sleeve 26 is an inner square outer round tube. The inner square outer round tube section of the center sleeve 26 is inserted downward into the gap between the square column 27 and the hollow spline male body 28. The lower section of the square tube of the center sleeve 26 is equipped with an upper steel plate and a lower steel plate, and the upper steel plate and the lower steel plate sandwich the cross slot in the middle. The first gear motor traction 21 is fixed on the frame inside the cross slot, and the wire rope output end of the first gear motor traction 21 is fixed to the lower section of the square tube of the center sleeve 26 between the upper steel plate and the lower steel plate. One end of the first gear return spring 17 is fixed on the frame, and the other end of the first gear return spring 17 is fixed to the upper section of the square tube of the center sleeve 26. The second gear motor traction 22 is fixed on the cross slot inner frame, and the wire rope output end of the second gear motor traction 22 is fixed to the lower section of the square tube of the center sleeve 26 between the upper steel plate and the lower steel plate. One end of the second gear return spring 18 is fixed on the frame, and the other end of the second gear return spring 18 is fixed to the upper section of the square tube of the center sleeve 26. The third gear motor traction 23 is fixed on the cross slot inner frame, and the wire rope output end of the third gear motor traction 23 is fixed to the lower section of the square tube of the center sleeve 26 between the upper steel plate and the lower steel plate.One end of the third gear return spring 19 is fixed on the frame, and the other end of the third gear return spring 19 is fixed on the upper section of the square tube of the center sleeve 26. The fourth gear motor traction 24 is fixed on the cross slot inner frame, and the wire rope output end of the fourth gear motor traction 24 is fixed on the lower section of the square tube of the center sleeve 26 between the inner upper steel plate and the lower steel plate. One end of the fourth gear return spring 20 is fixed on the frame, and the other end of the fourth gear return spring 20 is fixed on the upper section of the square tube of the center sleeve 26. The upper end of the square tube of the center sleeve 26 is equipped with a center gear reduction motor 25, and a counting sensor is installed on the rotating shaft of the center gear reduction motor 25. The lower end of the rotating shaft of the center gear reduction motor 25 is fixedly connected with the center screw, and the center screw passes downward through the center sleeve 26 and is screwed into the center screw hole of the square column 27. A first-gear conical friction wheel 13, a second-gear conical friction wheel 14, a third-gear conical friction wheel 15 and a fourth-gear conical friction wheel 16 are arranged around the central conical friction wheel 29. The first-gear conical driven gear 9 is coaxial with the first-gear conical friction wheel 13, the second-gear conical driven gear 10 is coaxial with the second-gear conical friction wheel 14, the third-gear conical driven gear 11 is coaxial with the third-gear conical friction wheel 15, and the fourth-gear conical driven gear 12 is coaxial with the fourth-gear conical friction wheel 16. The structure of all conical friction wheels is as follows: there is a rotating shaft at the center of the conical friction wheel, and rubber is filled between the rotating shaft and the conical friction steel pipe with longitudinal stripes.

[0009] Figure 1 and Figure 2As shown, the control method of the continuously variable transmission. The center sleeve 26 is in the center position of the cross groove under the pulling force of the first gear return spring 17, the second gear return spring 18, the third gear return spring 19 and the fourth gear return spring 20, and the center cone friction wheel 29 does not contact any cone friction wheel. The computer controller energizes the center gear reduction motor 25 to rotate the center gear reduction motor 25, and adjusts the position of the center cone friction wheel 29 through the counting sensor installed on the rotating shaft of the center gear reduction motor 25. The electromagnetic clutch is not energized and the electromagnetic clutch is in a disengaged state. The engine drives the input shaft to rotate, and the input gear 0 drives the first gear driven gear 1 to rotate, thereby rotating the first gear cone driving gear 5. The first gear cone driving gear 5 drives the first gear cone driven gear 9 to rotate, thereby rotating the first gear cone friction wheel 13. The input gear 0 drives the second gear driven gear 2 to rotate, thereby rotating the second gear cone driving gear 6. The second gear cone driving gear 6 drives the second gear cone driven gear 10 to rotate, thereby rotating the second gear cone friction wheel 14. The input gear 0 drives the third gear driven gear 3 to rotate, thereby rotating the third gear bevel driving gear 7. The third gear bevel driving gear 7 drives the third gear bevel driven gear 11 to rotate, thereby rotating the third gear bevel friction wheel 15. The input gear 0 drives the fourth gear driven gear 4 to rotate, thereby rotating the fourth gear bevel driving gear 8. The fourth gear bevel driving gear 8 drives the fourth gear bevel driven gear 12 to rotate, thereby rotating the fourth gear bevel friction wheel 16. It is necessary to shift to the first gear to adjust the rotation speed: the center sleeve 26 is in the center position of the cross groove under the tension of the first gear return spring 17, the second gear return spring 18, the third gear return spring 19 and the fourth gear return spring 20, and the center conical friction wheel 29 does not contact any conical friction wheel. The computer controller energizes the center gear reduction motor 25 to reverse the center gear reduction motor 25, and the center screw is screwed out of the center screw hole of the square column 27. The center conical friction wheel 29 is adjusted to the lowest position through the counting sensor installed on the rotating shaft of the center gear reduction motor 25. The electromagnetic clutch is not powered on and is in a disengaged state. The computer controller supplies power to the motor 21 pulled by the first gear motor, and the steel wire rope of the first gear motor 21 pulls the central sleeve 26, so that the central conical friction wheel 29 contacts the lowest section of the first gear conical friction wheel 13, and the first gear conical friction wheel 13 drives the central conical friction wheel 29 to rotate at a low speed, and then the computer controller powers on the electromagnetic clutch to engage and drive the load to rotate. The computer controller powers on the central gear reduction motor 25 to make the central gear reduction motor 25 rotate forward, and the central screw is screwed into the central screw hole of the square column 27, so that the square column 27 moves upward, and the hollow spline male body 28 moves upward through the central bearing, so that the central conical friction wheel 29 moves upward, and the position of the central conical friction wheel 29 is adjusted through the counting sensor installed on the rotating shaft of the central gear reduction motor 25, and the first gear conical friction wheel 13 drives the central conical friction wheel 29 to accelerate the rotation.The second gear needs to be engaged to adjust the rotation speed: the computer controller stops supplying power to the brake electromagnet pulled by the first gear motor 21, and the center sleeve 26 returns to the center position of the cross slot under the pulling force of the first gear return spring 17, the second gear return spring 18, the third gear return spring 19 and the fourth gear return spring 20, and the center cone friction wheel 29 does not contact any cone friction wheel. The computer controller energizes the center gear reduction motor 25 to reverse the center gear reduction motor 25, and the center screw is screwed out of the center screw hole of the square column 27. The center cone friction wheel 29 is adjusted to the lowest position through the counting sensor installed on the rotating shaft of the center gear reduction motor 25, and the computer controller stops supplying power to the electromagnetic clutch, and the electromagnetic clutch returns to the separation state. The computer controller supplies power to the motor of the second-gear motor traction 22, and the steel wire rope of the second-gear motor traction 22 pulls the central sleeve 26, so that the central conical friction wheel 29 contacts the lowermost section of the second-gear conical friction wheel 14, and the second-gear conical friction wheel 14 drives the central conical friction wheel 29 to rotate at a low speed, and then the computer controller energizes the electromagnetic clutch to engage and drive the load to rotate. The computer controller energizes the central gear reduction motor 25 to make the central gear reduction motor 25 rotate forward, and the central screw is screwed into the central screw hole of the square column 27, so that the square column 27 moves upward, and the hollow spline male body 28 moves upward through the central bearing, so that the central conical friction wheel 29 moves upward, and the position of the central conical friction wheel 29 is adjusted through the counting sensor installed on the rotating shaft of the central gear reduction motor 25, and the second-gear conical friction wheel 14 drives the central conical friction wheel 29 to accelerate the rotation. The third gear needs to be engaged to adjust the rotation speed: the computer controller stops supplying power to the brake electromagnet of the second gear motor traction 22, and the center sleeve 26 is pulled back to the center position of the cross slot by the first gear return spring 17, the second gear return spring 18, the third gear return spring 19 and the fourth gear return spring 20, and the center cone friction wheel 29 does not contact any cone friction wheel. The computer controller energizes the center gear reduction motor 25 to reverse the center gear reduction motor 25, and the center screw is screwed out of the center screw hole of the square column 27. The center cone friction wheel 29 is adjusted to the lowest position through the counting sensor installed on the rotating shaft of the center gear reduction motor 25, and the computer controller stops supplying power to the electromagnetic clutch, and the electromagnetic clutch returns to the separation state. The computer controller supplies power to the motor of the third-gear motor traction 23, and the steel wire rope of the third-gear motor traction 23 pulls the central sleeve 26, so that the central conical friction wheel 29 contacts the lowermost section of the third-gear conical friction wheel 15, and the third-gear conical friction wheel 15 drives the central conical friction wheel 29 to rotate at a low speed, and then the computer controller energizes the electromagnetic clutch to engage and drive the load to rotate.The electric computer controller energizes the center gear reduction motor 25 to make the center gear reduction motor 25 rotate forward, and the center screw is screwed into the center screw hole of the square column 27 to make the square column 27 move upward, and the hollow spline male body 28 moves upward through the center bearing, so that the center conical friction wheel 29 moves upward, and the position of the center conical friction wheel 29 is adjusted by the counting sensor installed on the rotating shaft of the center gear reduction motor 25, and the third-gear conical friction wheel 15 drives the center conical friction wheel 29 to accelerate. It is necessary to shift to the fourth gear to adjust the rotation speed: the computer controller stops supplying power to the brake electromagnet of the third-gear motor traction 23, and the center sleeve 26 is in the center position of the cross groove under the pulling force of the first-gear reset spring 17, the second-gear reset spring 18, the third-gear reset spring 19 and the fourth-gear reset spring 20, and the center conical friction wheel 29 does not contact any conical friction wheel. The computer controller energizes the center gear reduction motor 25 to reverse the center gear reduction motor 25, and the center screw is screwed out of the center screw hole of the square column 27. The center cone friction wheel 29 is adjusted to the lowest position through the counting sensor installed on the rotating shaft of the center gear reduction motor 25. The computer controller stops supplying power to the electromagnetic clutch, and the electromagnetic clutch returns to the separation state. The computer controller supplies power to the motor of the fourth-gear motor traction 24, and the steel wire rope of the fourth-gear motor traction 24 pulls the center sleeve 26, so that the center cone friction wheel 29 contacts the lowest section of the fourth-gear cone friction wheel 16, and the fourth-gear cone friction wheel 16 drives the center cone friction wheel 29 to rotate at a low speed, and then the computer controller energizes the electromagnetic clutch to engage and drive the load to rotate. The computer controller energizes the center gear reduction motor 25 to make it rotate forward, and the center screw is screwed into the center screw hole of the square column 27 to make the square column 27 move upward, and the hollow spline male body 28 moves upward through the center bearing, so that the center conical friction wheel 29 moves upward, and the position of the center conical friction wheel 29 is adjusted by the counting sensor installed on the rotating shaft of the center gear reduction motor 25, and the fourth-gear conical friction wheel 16 drives the center conical friction wheel 29 to accelerate its rotation.Since all the conical friction wheels have the following structures: there is a rotating shaft at the center of the conical friction wheel, and rubber is filled between the rotating shaft and the conical friction steel tube with longitudinal stripes; when the central conical friction wheel 29 contacts the first gear conical friction wheel 13, the second gear conical friction wheel 14, the third gear conical friction wheel 15 and the fourth gear conical friction wheel 16 under pressure, the contact surfaces of the central conical friction wheel 29 and the first gear conical friction wheel 13, the second gear conical friction wheel 14, the third gear conical friction wheel 15 and the fourth gear conical friction wheel 16 are all concave, and the central conical friction wheel 2 The contact area between the central conical friction wheel 29 and the first gear conical friction wheel 13, the second gear conical friction wheel 14, the third gear conical friction wheel 15 and the fourth gear conical friction wheel 16 increases, and the static friction between the contact surface between the central conical friction wheel 29 and the first gear conical friction wheel 13, the second gear conical friction wheel 14, the third gear conical friction wheel 15 and the fourth gear conical friction wheel 16 increases, and no sliding friction occurs between the contact surfaces between the central conical friction wheel 29 and the first gear conical friction wheel 13, the second gear conical friction wheel 14, the third gear conical friction wheel 15 and the fourth gear conical friction wheel 16. Since the contact surface between the central conical friction wheel 29 and the first gear conical friction wheel 13, the second gear conical friction wheel 14, the third gear conical friction wheel 15 and the fourth gear conical friction wheel 16 belongs to rolling friction transmission, it will not cause mechanical wear, power loss, and heat generation. It will cause mechanical wear, power loss, and heat generation.

Claims

1. A continuously variable transmission, the continuously variable transmission mainly comprising an input shaft, an output shaft, a housing, an input gear (0), a first gear driven gear (1), a first gear bevel driving gear (5), a first gear bevel driven gear (9), a second gear driven gear (2), a second gear bevel driving gear (6), a second gear bevel driven gear (10), a third gear driven gear (3), a third gear bevel driving gear (7), a third gear bevel driven gear (11), a fourth gear driven gear (4), a fourth gear bevel driving gear (8), and a fourth gear bevel driven gear (12); an input gear (0) is mounted on the input shaft, the input gear (0) is meshed with the first gear driven gear (1), the first gear driven gear (1) is coaxial with the first gear bevel driving gear (5), the first gear bevel driven gear (1) is coaxial with the first gear bevel driving gear (5), and the first gear bevel driven gear (1) is coaxial with the first gear bevel driving gear (5). The input gear (0) is meshed with the second gear driven gear (2), the second gear driven gear (2) is coaxial with the second gear bevel driving gear (6), and the second gear bevel driving gear (6) is meshed with the second gear bevel driven gear (10); the input gear (0) is meshed with the third gear driven gear (3), the third gear driven gear (3) is coaxial with the third gear bevel driving gear (7), and the third gear bevel driving gear (7) is meshed with the third gear bevel driven gear (11); the input gear (0) is meshed with the fourth gear driven gear (4), the fourth gear driven gear (4) is coaxial with the fourth gear bevel driving gear (8), and the fourth gear bevel driving gear (8) is meshed with the fourth gear bevel driven gear (12); the characteristics are as follows: A cross-buckle coupling (31) is arranged between the lower end of the spline mother body (30) and the upper end of the output shaft, a central conical friction wheel (29) is arranged on the upper section of the hollow spline male body (28), a central screw hole is arranged on the square column (27), the lower end of the square column (27) is fixedly connected with the cylinder, the cylinder is inserted downward into the central bearing hole, and then the central bearing is fixed on the cylinder by an external retaining ring, the square column (27) is inserted upward into the hollow spline male body (28), and then the central bearing is inserted into the inner lower end of the hollow spline male body (28), and then the central bearing is fixed to the inner lower end of the hollow spline male body (28) by an internal retaining ring, the hollow spline male body (28) is inserted downward into the spline mother body (30), and the central sleeve (26) is inserted upward into the central bearing hole of the cylindrical body. The first section is a square tube, the lower section of the center sleeve (26) is an inner square outer round tube, the inner square outer round tube section of the center sleeve (26) is inserted downward into the gap between the square column (27) and the hollow spline male body (28), the lower section of the square tube of the center sleeve (26) is equipped with an upper steel plate and a lower steel plate, the upper steel plate and the lower steel plate sandwich the cross groove in the middle, the first gear motor traction (21) is fixed on the frame inside the cross groove, the steel wire rope output end of the first gear motor traction (21) is fixed to the square tube lower section of the center sleeve (26) between the upper steel plate and the lower steel plate, one end of the first gear return spring (17) is fixed on the frame, and the other end of the first gear return spring (17) is fixed to the square tube upper section of the center sleeve (26); the second gear motor traction (22) is fixed on the frame in the cross groove, the wire rope output end of the second-gear motor traction (22) is fixed to the square tube lower section of the center sleeve (26) between the upper steel plate and the lower steel plate, one end of the second-gear return spring (18) is fixed to the frame, and the other end of the second-gear return spring (18) is fixed to the square tube upper section of the center sleeve (26); the third-gear motor traction (23) is fixed on the frame in the cross groove, the wire rope output end of the third-gear motor traction (23) is fixed to the square tube lower section of the center sleeve (26) between the upper steel plate and the lower steel plate, one end of the third-gear return spring (19) is fixed to the frame, and the other end of the third-gear return spring (19) is fixed to the square tube upper section of the center sleeve (26); the fourth-gear motor traction (23) is fixed on the frame in the cross groove, the wire rope output end of the third-gear motor traction (23) is fixed to the square tube lower section of the center sleeve (26) between the upper steel plate and the lower steel plate, one end of the third-gear return spring (19) is fixed to the frame, and the other end of the third-gear return spring (19) is fixed to the square tube upper section of the center sleeve (26); The motor traction (24) is fixed on the cross slot inner frame, the steel wire rope output end of the four-speed motor traction (24) is fixed on the square tube lower section of the central sleeve (26) between the inner upper steel plate and the lower steel plate, one end of the four-speed return spring (20) is fixed on the frame, and the other end of the four-speed return spring (20) is fixed on the square tube upper section of the central sleeve (26); the square tube upper end of the central sleeve (26) is equipped with a central gear reduction motor (25), the rotating shaft of the central gear reduction motor (25) is equipped with a counting sensor, the rotating shaft lower end of the central gear reduction motor (25) is fixedly connected with a central screw, and the central screw passes through the central sleeve (26) downward and is screwed into the central screw hole of the square column (27);A first-gear conical friction wheel (13), a second-gear conical friction wheel (14), a third-gear conical friction wheel (15) and a fourth-gear conical friction wheel (16) are arranged around the central conical friction wheel (29); the first-gear conical driven gear (9) is coaxial with the first-gear conical friction wheel (13); the second-gear conical driven gear (10) is coaxial with the second-gear conical friction wheel (14); the third-gear conical driven gear (11) is coaxial with the third-gear conical friction wheel (15); and the fourth-gear conical driven gear (12) is coaxial with the fourth-gear conical friction wheel (16); all the conical friction wheels have the following structure: a rotating shaft is arranged at the center of the conical friction wheel, and rubber is filled between the rotating shaft and the conical friction steel tube with longitudinal stripes. ; 2. The control method of the continuously variable transmission according to claim 1, characterized in that: The central sleeve (26) is located at the center of the cross groove under the pulling force of the first gear return spring (17), the second gear return spring (18), the third gear return spring (19) and the fourth gear return spring (20), and the central conical friction wheel (29) does not contact any conical friction wheel. The computer controller energizes the central gear reduction motor (25) to rotate the central gear reduction motor (25), and the position of the central conical friction wheel (29) is adjusted by the counting sensor installed on the rotating shaft of the central gear reduction motor (25). The electromagnetic clutch is not energized and the electromagnetic clutch is in a disengaged state. The engine drives the input shaft to rotate, the input gear (0) drives the first gear driven gear (1) to rotate, thereby causing the first gear bevel driving gear (5) to rotate, the first gear bevel driving gear (5) drives the first gear bevel driven gear (9) to rotate, thereby causing the first gear bevel friction wheel (13) to rotate; the input gear (0) drives the second gear driven gear (2) to rotate, thereby causing the second gear bevel driving gear (6) to rotate, the second gear bevel driving gear (6) drives the second gear bevel driven gear (10) to rotate, thereby causing the second gear bevel friction wheel (14) to rotate; the input gear (0) drives the third gear driven gear (2) to rotate, thereby causing the second gear bevel driving gear (6) to rotate, thereby causing the second gear bevel friction wheel (14) to rotate. The input gear (3) rotates, thereby rotating the third-gear bevel driving gear (7), and the third-gear bevel driving gear (7) drives the third-gear bevel driven gear (11) to rotate, thereby rotating the third-gear bevel friction wheel (15); the input gear (0) drives the fourth-gear driven gear (4) to rotate, thereby rotating the fourth-gear bevel driving gear (8), and the fourth-gear bevel driving gear (8) drives the fourth-gear bevel driven gear (12) to rotate, thereby rotating the fourth-gear bevel friction wheel (16); when the first gear is engaged to adjust the rotation speed: the center sleeve (26) is in the first gear reset spring (17), the second gear reset spring (18) and the third gear reset spring (21). The central conical friction wheel (29) is in the center of the cross groove under the pulling force of the spring (18), the third gear return spring (19) and the fourth gear return spring (20), the central conical friction wheel (29) does not contact with any conical friction wheel, the computer controller allows the central gear reduction motor (25) to be energized to reverse the central gear reduction motor (25), the central screw is screwed out of the central screw hole of the square column (27), the central conical friction wheel (29) is adjusted to the lowest position through the counting sensor installed on the rotating shaft of the central gear reduction motor (25), the electromagnetic clutch is not energized, and the electromagnetic clutch is in a disengaged state;The computer control instrument supplies power to the motor (21) of the first gear motor traction, and the steel wire rope of the first gear motor traction (21) pulls the central sleeve (26), so that the central conical friction wheel (29) contacts the lowermost section of the first gear conical friction wheel (13), and the first gear conical friction wheel (13) drives the central conical friction wheel (29) to rotate at a low speed, and then the computer control instrument energizes the electromagnetic clutch to drive the load to rotate, and the computer control instrument energizes the central gear reduction motor (25) to make the central gear reduction motor (25) rotate forward, and the central screw is screwed into the central screw hole of the square column (27), so that the square column (27) moves upward, and the hollow spline male body (28) moves upward through the central bearing. , so that the central conical friction wheel (29) moves upward, and the position of the central conical friction wheel (29) is adjusted by the counting sensor installed on the rotating shaft of the central gear reduction motor (25), and the first gear conical friction wheel (13) drives the central conical friction wheel (29) to rotate faster; it is necessary to shift to the second gear to adjust the rotation speed: the computer control instrument stops supplying power to the brake electromagnet driven by the first gear motor (21), and the central sleeve (26) returns to the center position of the cross groove under the pulling force of the first gear return spring (17), the second gear return spring (18), the third gear return spring (19) and the fourth gear return spring (20), and the central conical friction wheel (29) does not contact any conical friction wheel. The computer control instrument supplies power to the central gear reduction motor (25) to reverse the central gear reduction motor (25), and the central screw is screwed out from the central screw hole of the square column (27). The central conical friction wheel (29) is adjusted to the lowest position through the counting sensor installed on the rotating shaft of the central gear reduction motor (25). The computer control instrument stops supplying power to the electromagnetic clutch, and the electromagnetic clutch resumes the separation state; the computer control instrument supplies power to the motor of the second gear motor traction (22), and the steel wire rope of the second gear motor traction (22) pulls the central sleeve (26), so that the central conical friction wheel (29) contacts the lowest section of the second gear conical friction wheel (14), and the second gear conical friction wheel (14) drives the The central conical friction wheel (29) rotates at a low speed, and then the computer control instrument energizes the electromagnetic clutch to engage and drive the load to rotate. The computer control instrument energizes the central gear reduction motor (25) to make the central gear reduction motor (25) rotate forward, and the central screw is screwed into the central screw hole of the square column (27) to make the square column (27) move upward, and the hollow spline male body (28) moves upward through the central bearing, so that the central conical friction wheel (29) moves upward, and the position of the central conical friction wheel (29) is adjusted by the counting sensor installed on the rotating shaft of the central gear reduction motor (25), and the second gear conical friction wheel (14) drives the central conical friction wheel (29) to rotate faster;The rotation speed needs to be adjusted by shifting to the third gear: the computer control instrument stops supplying power to the brake electromagnet of the second gear motor traction (22), and the center sleeve (26) is pulled back to the center position of the cross groove by the first gear return spring (17), the second gear return spring (18), the third gear return spring (19) and the fourth gear return spring (20). The center conical friction wheel (29) does not contact any conical friction wheel. The computer control instrument energizes the center gear reduction motor (25) to reverse the center gear reduction motor (25), and the center screw is screwed out from the center screw hole of the square column (27). The counting sensor adjusts the central conical friction wheel (29) to the lowest position, and the computer control instrument stops supplying power to the electromagnetic clutch, and the electromagnetic clutch resumes the separation state; the computer control instrument supplies power to the motor of the third-gear motor traction (23), and the steel wire rope of the third-gear motor traction (23) pulls the central sleeve (26), so that the central conical friction wheel (29) contacts the lowermost section of the third-gear conical friction wheel (15), and the third-gear conical friction wheel (15) drives the central conical friction wheel (29) to rotate at a low speed, and then the computer control instrument energizes the electromagnetic clutch to engage and drive the load to rotate, and the computer control instrument energizes the central gear reduction motor (25) to make the central gear The wheel reduction motor (25) rotates forward, and the center screw is screwed into the center screw hole of the square column (27), so that the square column (27) moves upward, and the hollow spline male body (28) moves upward through the center bearing, so that the center conical friction wheel (29) moves upward, and the position of the center conical friction wheel (29) is adjusted by the counting sensor installed on the rotating shaft of the center gear reduction motor (25), and the third-gear conical friction wheel (15) drives the center conical friction wheel (29) to accelerate the rotation; the fourth gear is needed to adjust the rotation speed: the computer control instrument stops supplying power to the brake electromagnet of the third-gear motor traction (23), and the center sleeve (26) is in the first gear. The central conical friction wheel (29) is in the center of the cross groove under the pulling force of the first-gear spring (17), the second-gear return spring (18), the third-gear return spring (19) and the fourth-gear return spring (20), and the central conical friction wheel (29) does not contact any conical friction wheel. The computer control instrument enables the central gear reduction motor (25) to be energized to reverse the central gear reduction motor (25), and the central screw is screwed out of the central screw hole of the square column (27). The central conical friction wheel (29) is adjusted to the lowest position through the counting sensor installed on the rotating shaft of the central gear reduction motor (25), and the computer control instrument stops supplying power to the electromagnetic clutch, and the electromagnetic clutch returns to the separation state;The computer control instrument supplies power to the motor of the four-speed motor traction (24), and the steel wire rope of the four-speed motor traction (24) pulls the central sleeve (26), so that the central conical friction wheel (29) contacts the lowermost section of the four-speed conical friction wheel (16), and the four-speed conical friction wheel (16) drives the central conical friction wheel (29) to rotate at a low speed, and then the computer control instrument energizes the electromagnetic clutch to engage and drive the load to rotate, and the computer control instrument energizes the central gear reduction motor (25) to make the central gear reduction motor (25) rotate forward, and the central screw is screwed into the square column (2 7), the square column (27) moves upward, the hollow spline male body (28) moves upward through the center bearing, so that the center conical friction wheel (29) moves upward, the position of the center conical friction wheel (29) is adjusted by the counting sensor installed on the rotating shaft of the center gear reduction motor (25), and the fourth-gear conical friction wheel (16) drives the center conical friction wheel (29) to accelerate the rotation; since all the conical friction wheels have the following structure: the conical friction wheel center has a rotating shaft, and the rotating shaft and the conical friction steel pipe with longitudinal stripes are filled between The central conical friction wheel (29) is filled with rubber; when the central conical friction wheel (29) contacts the first gear conical friction wheel (13), the second gear conical friction wheel (14), the third gear conical friction wheel (15) and the fourth gear conical friction wheel (16) under pressure, the contact surfaces of the central conical friction wheel (29) and the first gear conical friction wheel (13), the second gear conical friction wheel (14), the third gear conical friction wheel (15) and the fourth gear conical friction wheel (16) are all concave, and the central conical friction wheel (29) and the first gear conical friction wheel (13), the second gear conical friction wheel (14) are The contact areas of the first gear conical friction wheel (13), the second gear conical friction wheel (14), the third gear conical friction wheel (15) and the fourth gear conical friction wheel (16) are increased, the static friction force between the contact surfaces of the central conical friction wheel (29) and the first gear conical friction wheel (13), the second gear conical friction wheel (14), the third gear conical friction wheel (15) and the fourth gear conical friction wheel (16) is increased, and no sliding friction occurs between the contact surfaces of the central conical friction wheel (29) and the first gear conical friction wheel (13), the second gear conical friction wheel (14), the third gear conical friction wheel (15) and the fourth gear conical friction wheel (16). A four-speed conical friction wheel (16), a hollow spline male body (28), a central conical friction wheel (29), a spline mother body (30), a cross-clinch coupling (31), a central gear reduction motor (25), a central screw, a central sleeve (26), a square housing (27), a cross groove, a first-speed return spring (17), a first-speed motor traction (21), a second-speed return spring (18), a second-speed motor traction (22), a third-speed return spring (19), a third-speed motor traction (23), a fourth-speed return spring (20), a fourth-speed motor traction (24) and a computer controller. ;

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