| 摘要 |
The invention relates to an installation for operating points, comprising a plurality of interlinked hydraulic operating installations spaced apart along the railway line. According to the invention, the installation for operating points is mechanically coupled with the tongue rails (3) and connected to at least one cylinder-piston hydraulic unit (7) whose chambers work as working chambers (13) being connected to the working chambers (13) of the adjacent hydraulic installations which also comprise cylinder-piston hydraulic units (7), to provide the driving thereof in the same direction. Said cylinder-piston unit (7) is mechanically connected acting as a pump element. The pump element and the adjacent hydraulic installation each comprises a floating piston (22) or a plunger (11) located between two working chambers (13) and guided inside a cylinder, the front or annular surfaces of the piston (22) or of the plunger (11) breaking into the opposite working chamber (13) have identical cross-sections. The floating piston (22) or the plunger (11) of the pumping unit is provided between its free ends with a bearing, particularly with a slideway (8) which is provided with an annular groove (a) of an axle box, and is located in front of an opening of the cylinder or between two fixed cylinders. The piston (22) is rigidly connected with a continuous piston rod (23) crossing tightly the cylinders, the piston rod (23) or the cylinder being fixed. The working chambers of the cylinder-piston unit (7) are connected to a pressure reservoir (20) by means of some overpressure valves (21).
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