FRICTION DRIVE OF VERTICAL LIFT CARRIAGE Russian patent published in 2018 - IPC B66B9/02 

FIELD: transportation.

SUBSTANCE: invention relates to mechanisms of lifting devices, mainly vertical lifts for disabled wheelchair users. Drive includes a drive tube (2) passing through the frame (1) of the elevator and the carriage body (5) vertically mounted in the supports (3) of the elevator beams (4). With the help of rods (20), the platform (7) and the carriage body (5) are connected to the frame (1) in the hinged non-metallic supports (21). In the body of the carriage (5) around the tube (2), two equilibrating arms of the rocker (8), held by a pair of threaded elements (14), are diametrically located. In the central part of one beam (8), a groove is made on one side, and from the opposite protrusion (23), cooperating respectively with the protrusion and groove of the other rocker. Inside each arm of the rocker arm (8) are installed eight rollers (6), two pairs, one above the other on the axes rigidly fixed in the ribs of the rocker arms, the periphery of both sides of the upper and lower parts of which is provided with a radial dent of a cylindrical shape. Rolls (6) cooperating with the pipe (2) are radially and obliquely positioned at the same angle to the axis of the pipe (2) with the possibility of changing the pressing force to the latter in proportion to the weight of the load transported on the platform (7) connected to the body (1) and carriage (5). In the lower part of the body of the carriage (5), four flat surfaces (15) are arranged, mirrored in pairs, at the same angle to the profile plane of the carriage. Support rollers (16), mounted on the axes (9), come into contact with the surfaces (15). Sensor (24) is mounted on the carriage body (5), defining the limit position of the rocker arms (8) with respect to the carriage body (5).

EFFECT: invention provides for the creation of a simple frictional drive of the carriage of the elevator, which ensures its long-term operation.

1 cl, 7 dwg