Roller-type omnidirectional physical exercise platform and speed synthesis method for same
The present invention discloses a roller-type omnidirectional physical exercise platform, mainly including a housing, a plurality of groups of alternately-placed spiral rollers disposed inside the housing, a motor configured to drive the spiral rollers. The spiral rollers include clockwise spiral rollers and counterclockwise spiral rollers. Roller bodies of the clockwise spiral rollers are obliquely embedded with rotatable wheels at particular angles. Two ends of the roller are mounted with gears and bearings providing a support function. The counterclockwise spiral roller is mirror-symmetrical with the clockwise spiral roller. The present invention presents an active omnidirectional physical exercise platform. Compared with a passive omnidirectional exercise platform, a human body does not need to be strapped, thereby providing more real movement experience, effectively resolving a problem that movements in a virtual space are limited by a real space, and achieving features such as low noise and a slim machine body.
1. A roller-type omnidirectional physical exercise platform, comprising: a housing, a plurality of groups of alternately-placed spiral rollers disposed inside the housing, and a motor configured to drive the spiral rollers, wherein the spiral rollers are configured to provide a reverse moving speed for a human body moving on the surface of the platform;
the housing comprises a base and a machine body cover, both sides of the base being provided with support bearing grooves for mounting the spiral rollers and gear grooves for gear transmission;
each of two ends of the spiral roller is provided with a support bearing and a gear, the support bearing and the gear respectively fitting in the support bearing groove and the gear groove;
two gears on the spiral roller are respectively a driving gear and a driven gear, the driving gear being fixed on the spiral roller and configured to drive the spiral roller under the action of the motor to rotate, the driven gear being movably assembled on the spiral roller and freely rotatable around the spiral roller;
the spiral rollers comprise counterclockwise spiral rollers and clockwise spiral rollers, roller bodies of the counterclockwise spiral rollers and the clockwise spiral rollers being obliquely embedded with rotatable wheels respectively in a counterclockwise direction and a clockwise direction; and
the counterclockwise spiral rollers and the clockwise spiral rollers are assembled in the base at intervals in a staggered manner, the driven gear of the counterclockwise spiral roller and the driving gear of the clockwise spiral roller being engaged in a gear groove, the driving gear of the counterclockwise spiral roller and the driven gear of the clockwise spiral roller being engaged in another gear groove, two motors being respectively configured to drive the two rows of gears.
2. The roller-type omnidirectional physical exercise platform according to claim 1 , wherein one side end of the base is provided with two motor mounting grooves for fixing and assembling the motors.
3. The roller-type omnidirectional physical exercise platform according to claim 1 , wherein each of two ends of the spiral roller is provided with a support bearing fixing region for mounting the support bearing and is respectively provided with a driving gear fixing region and a driven gear fixing region, the driving gear being fixed on the spiral roller by the driving gear fixing region, the driven gear being assembled on the driven gear fixing region of the spiral roller by a bearing.
4. The roller-type omnidirectional physical exercise platform according to claim 1 , wherein angles at which the wheels are embedded in the roller bodies of the counterclockwise spiral rollers and the clockwise spiral rollers are respectively counterclockwise oblique 45 degrees and clockwise oblique 45 degrees.
5. A speed synthesis method for the roller-type omnidirectional physical exercise platform according to claim 4 , wherein
speeds of the two motors are respectively adjusted according to a required outputted synthesized speed, that is, a speed in an opposite direction of the movement of the human, to drive the counterclockwise spiral rollers and the clockwise spiral rollers, wherein specifically:
in a machine body plane, a direction obtained by counterclockwise rotating 45 degrees from the axial direction of the counterclockwise spiral roller is used as the y direction, that is, the axial direction of the wheel on the counterclockwise spiral roller is used as the y direction; and a direction obtained by clockwise rotating 45 degrees from the axial direction of the clockwise spiral roller is used as the x direction, that is, the axial direction of the wheel on the clockwise spiral roller is used as the x direction; and a coordinate system is established accordingly, and when the surface of the platform requires an outputted synthesized speed with a magnitude of V w and an angle of w, a rotational linear speed of the counterclockwise spiral roller needs to be V 1 =V w *sin(w)/sin(pi/4), and a rotational linear speed of the clockwise spiral roller needs to be V 2 =V w *cos(w)/sin(pi/4), so that a rotational speed of the motor driving the counterclockwise spiral rollers is W 1 =a*V 1 , and a rotational speed of the motor driving the clockwise spiral rollers is W 2 =a*V 2 , wherein a is related to a gear radius and a transmission ratio, and is a constant.