Automatic transport device

An automatic transport device, comprising a first side and a second side opposite to each other, the first side being provided with a main drive device, a step drive wheel and a first handrail drive wheel in transmission connection with the main drive device;

• wherein, the second side is provided with:
• a step driven wheel;
• a second handrail drive wheel in transmission connection with the step driven wheel, wherein a handrail of the automatic transport device wraps around the first handrail drive wheel and the second handrail drive wheel;
• a first tensioning device and a first transmission member, wherein the first tensioning device is capable of adjusting the movement of the step driven wheel relative to the step drive wheel, thereby maintaining the first transmission member between the step drive wheel and the step driven wheel in tension;
• and
• a second tensioning device and a second transmission member, wherein the second handrail drive wheel is in transmission connection with the step driven wheel through the second transmission member, and the second tensioning device is capable of maintaining the second transmission member in tension during movement of the step driven wheel;
• wherein the second tensioning device is a floating gear device acting on the second transmission member, and wherein the floating gear device comprises:
• a floating body and a first wheel on the floating body, the bottom of the first wheel being wrapped around and supported by the second transmission member, and the floating body being mounted in a track so as to float up and down;
• wherein a first guide wheel set is provided between the floating gear device and the second handrail drive wheel, the first guide wheel set comprising a pair of guide wheels respectively engaged with the first and second sections of the second transmission member, and a second guide wheel set is provided between the floating gear device and the step driven wheel, the second guide wheel set comprising another pair of guide wheels respectively engaged with the first and second sections of the second transmission member.

An automatic transport device, comprising a first side and a second side opposite to each other, the first side being provided with a main drive device, a step drive wheel and a first handrail drive wheel in transmission connection with the main drive device;

• wherein, the second side is provided with:
• a step driven wheel;
• a second handrail drive wheel in transmission connection with the step driven wheel, wherein a handrail of the automatic transport device wraps around the first handrail drive wheel and the second handrail drive wheel;
• a first tensioning device and a first transmission member, wherein the first tensioning device is capable of adjusting the movement of the step driven wheel relative to the step drive wheel, thereby maintaining the first transmission member between the step drive wheel and the step driven wheel in tension;
• and
• a second tensioning device and a second transmission member, wherein the second handrail drive wheel is in transmission connection with the step driven wheel through the second transmission member, and the second tensioning device is capable of maintaining the second transmission member in tension during movement of the step driven wheel;
• wherein the first transmission member is a step chain wrapping around the step drive wheel and the step driven wheel, and the first tensioning device is a spring mechanism connected to a movable bracket supporting the step driven wheel, and wherein the movable bracket is movable horizontally, and the spring mechanism tends to move the movable bracket and the step driven wheel thereon in a direction away from the step drive wheel.