Hydraulic spring clamp for excavators, caterpillar vehicles, and tractors comprises a control valve feeding oil into a spring cylinder and simultaneously closing an oil piston for the oil return with a closing ball

摘要

Hydraulic spring clamp for excavators, caterpillar vehicles, tractors, etc. comprises a control valve feeding oil into a spring cylinder (4) and simultaneously closing an oil piston (5) for the oil return with a closing ball (6) so that oil cannot flow back into the spring cylinder until the oil pressure in the spring cylinder is high enough for the oil to open the ball and the guiding wheel can be deflected. Preferred Features: The spring assembly (9) is adjusted so that the spring cylinder still holds the piston when the pump/machine is switched off and the guiding wheel can spring back only by a small amount to reduce the load on the guiding wheels and not load the chain in the rest position. The screw (10) can be released so that the oil in the cylinder can flow back through the ball into the oil tank.