Safety type hydraulic track lifting and lining device

The utility model relates to the technical field of track lifting and lining devices, in particular to a safety type hydraulic track lifting and lining device which comprises a base, a plunger pump and a support, an anti-shrinkage structure used for preventing a piston of the plunger pump from shrin...

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1. Verfasser: WANG CHUANHUAN
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The utility model relates to the technical field of track lifting and lining devices, in particular to a safety type hydraulic track lifting and lining device which comprises a base, a plunger pump and a support, an anti-shrinkage structure used for preventing a piston of the plunger pump from shrinking backwards is arranged between the base and the support, and a piston shrinkage structure used for eliminating the effect of the anti-shrinkage structure for preventing the piston from shrinking backwards is installed on the base. By means of the anti-shrinkage structure, even if the extending piston cannot be locked suddenly by an oil way, the piston of the plunger pump can be prevented from shrinking backwards, so that threat to constructors is avoided, safety of the constructors is guaranteed, and when the handle is rotated to enable the rectangular block to rotate to the right side, the rectangular block pushes the rectangular rod to rotate upwards, and the piston is prevented from shrinking. The lower end