| 摘要 |
FIELD: machine building.SUBSTANCE: bench comprises a frame (1), a section of a conveyor belt (2), under which there are two elastic rolls (8, 9) are arranged as connected to each other and resting onto cylindrical rolls (11, 12) of smaller diametre with rigid shells (13, 14). Rolls are installed on the frame as capable of rotation and displacement of their bearings (15, 16) in the horizontal plane. One end of the belt section is fixed on the drum (17) with a controlled braking accessory (18), and the other one - connected with a flexible element (19), which is equipped with a metering instrument (20) and is connected with a drum (21), connected with a driving unit (22) with adjustable frequency of engine rotation. Above rolls coaxially with them and with the possibility of interaction with the upper surface of the belt section there is a drum (23) arranged as capable of rotation, its axis (24) is fixed at the ends of two inclined levers (26, 27) connected with a crosspiece (25) and hingedly installed on the frame. The crosspiece (25) equipped with a metering accessory (29) is connected with a traction rod (30) to a helical drive (31), fixed on the frame. On the frame at the side of the belt section drive there is a stand (32) with a horizontal plank (33) arranged in its upper part as capable of displacement in guides with divisions applied on it. At the end of the plank there is a vertical plate (35) fixed normally aligned to it, where divisions are also applied.EFFECT: invention provides for selection of rational parameters of a shock absorbing device.3 cl, 3 dwg |
