CRANE SUSPENSION SWITCH Russian patent published in 1995 - IPC

FIELD: mechanical engineering; cranes. SUBSTANCE: running truck axles 1 are connected to flexible suspension 4 through brackets 2 and 3. Suspension is connected in central part to running truck sidemember through unit 5. Crane support frame is 7 is stationary mounted on sidemember. Located in joints 8 of support frame are Z-shaped double-arm levers 9 whose upper arms are divided by power cylinder 10 with elongated rod 11, and lower arms are in contact with stops 12 and are furnished with hinge-mounted double-arm levers 13. Inner ends of levers 13 are furnished with rollers 14 and outer ends are hinge-connected with lower arms of Z-shaped levers by means of screw rods 15. Fitted on brackets 2 at ends of flexible suspension 4 are grips 17 whose mouths can engage with rollers 14. EFFECT: enlarged operating capabilities. 1 dwg