Abstract: A lifting platform includes a base, two “T”-shaped parallel sliding grooves in supporting bars, two wheels, a platform, and a cylinder. Each wheel is held away from the internal far rolling surface of each sliding groove in an original position because of the orientation of the connected platform, but can contact and rest upon the rolling surface and further roll along the rolling surface when the platform is rotated. A hydraulic or air-driven piston rod of the cylinder can push the platform to first rotate and then move upward. The platform is transitionable between: (i) an inclined configuration in which each first wheel is in the original position; (ii) a horizontal configuration in which each first wheel contacts and rests upon a sliding groove; and (iii) a lifting configuration in which each first wheel rolls along a sliding groove.

Abstract: A tilting board for a human being operated includes an operation plate, a base plate rotationally connected to the operation plate, a sliding rail fixed on the base plate, and an adjustment member. The sliding rail is fixed on the base plate and defines a plurality of pairs of opposite slots. One end of the adjustment member abuts against the operation plate and the other end of the adjustment member is positioned between one of the pairs of opposite slots. The degree of incline of the tilting board can be changed by moving the adjustment member from the pair of opposite slots to another one of the pairs of opposite slots.

Abstract: A rotary platform device is for supporting and rotating an assembly. The rotary platform device includes a rotary platform and a casing. The rotary platform extends up from the casing. The casing accommodates a driving device, a coupling member, and a linkage bar. The driving device provides linear motion, which is translated by the linkage bar to rotary motion applied to the rotary platform.

Abstract: A level compensation device for compensating an angle formed between a lifting mechanism and a pressing device which is horizontally placed on a product is provided. The level compensation device includes a base to be horizontally placed on the pressing device, and a rotatable plate rotatably connected to the base. The rotatable plate is driven by an external force to rotate relative to the base until an angle formed between the rotatable plate and the base is equal to the angle formed between the lifting mechanism and the pressing device.