The charging surface area of the charging cylinder is set smaller than the area of the end surface of the clamping ram forming the rear surface of the piston.

A charging cylinder provided with a piston rod operatively connected to the clamping ram is formed on a side portion of the clamping cylinder so as to communicate with the front chamber therein.

The charging surface area of the charging cylinder is set smaller than the area of the end surface of the clamping ram forming the rear surface of the piston.

A load plate (6) mounted at the free end of the jack screw (4) facilitates engagement of the jack assembly with a load to be supported.

The device comprises a hydraulic jack, a load cell and a lever which is pivotally mounted.

The active cylinder is controlled hydraulically to add or remove load to/from the passive cylinder system in order to provide a compensating balance.

Control and operating system comprising a hydraulic cylinder (1) for moving a load (2).

The four springs (37) are compressed on extension of the jack (1) to assist in lifting a load.

The lifting tool will be outbalanced with a counterweight, the load will be outbalanced by the force of a cylinder.

The invention relates to a rapid loading and unloading device for road/rail transport with a feed belt conveyor using a hydraulic jack.

The integrated breakaway cylinder is constructed from a first stage cylinder and a second stage cylinder.

The ram includes a ram lug spaced from the central axis.

The left hydraulic cylinder (3) and the right hydraulic cylinder (4) are separately set on both sides of the rear of the cargo box and connected with the hydraulic pump (16).

The working machine (100) comprises a load carrier (101) and at least one lift cylinder (102) adapted to raise the load carrier (101) for tipping the load.

The cylinder includes a cylinder body and a piston apparatus.