| 摘要 |
FIELD: mechanical engineering; agricultural machines. ^ SUBSTANCE: proposed hoist designed for repair of grain harvesters has truck 1 with post 2 and wheels 16 mounted on turntable posts 17 eccentric relative to wheel axles. Main lever 3 and upper lever 4 are hinge-coupled with post 2, and carrying lever 5 is connected with upper levers 4. Traction member is arranged over diagonal of four-member device formed by levers, in particularly case, hydraulic cylinder 6. Turnbuckle 7 to change length of lever is installed of lever 4, and axle 9 arranged in plane of four-member device is arranged on lever 5. Cradle 10 for gearbox 13 is suspended on axle 9 to accommodate gearbox in position when its mounting flanged is perpendicular to axle 9. Flange 15 is moved to flange 18 on harvester by rolling truck 1 under harvester and turning. Flange 15 is set at one level with flange 18 by lifting-lowering cradle 10 under action of hydraulic cylinder 6. In general case, flanges 15 and 18 are aligned and relatively fastened by turning and rolling truck 1, changing length of lever 4 and turning cradle 10 on axle 9 by hydraulic cylinder 6. ^ EFFECT: improved convenience in use of hoist at orientation of gearbox in process of its mounting of harvester. ^ 2 cl, 1 dwg |
