摘要:
The method and apparatus are for bending or straightening a material such as a rail. A simple form of the apparatus comprises two spaced contact members for contacting the rail, and a rail lifting member located between these points arranged to lift the rail between the two points, the lifting member being arranged to engage the head of the rail. A preferred method comprises applying a load to the material and, while the load is applied, continuously or periodically measuring the load applied and the displacement of the material relative to the datum, establishing from the measurements a load at which the plastic component of the total deformation measured is equal to the predetermined deformation from the datum, and then removing the load.
摘要:
A vehicle 16 has a series of sideways moving slideways 15 each fitted with a lifting actuator 9 and 10 interconnected and interlinked by a control means (hydraulic valves 12, 13 and 14) such that any one, any pair or any combination may be actuated in order (when the vehicle is raised) that said vehicle may be moved from side to side or in limited arcuate motion, said control also being so interlocked and interconnected as to prevent inappropriate movement of said lifting actuators.
摘要:
A vehicle 16 has a series of sideways moving slideways 15 each fitted with a lifting actuator 9 and 10 interconnected and interlinked by a control means (hydraulic valves 12, 13 and 14) such that any one, any pair or any combination may be actuated in order (when the vehicle is raised) that said vehicle may be moved from side to side or in limited arcuate motion, said control also being so interlocked and interconnected as to prevent inappropriate movement of said lifting actuators.