Abstract: A safety system for a machine includes a pressurizing device; at least one hydraulic cylinder, the at least one hydraulic cylinder including a pressure chamber and a piston having a head and a rod, the piston being movable within the pressure chamber along a longitudinal direction; a first pressure sensor and a second pressure sensor being designed to measure the pressure within the pressure chamber via a first channel having a first opening and a second channel having a second opening, which both extend into the pressure chamber, and are spaced apart as seen in the longitudinal direction; a seal device arranged circumferentially around the head of the piston, and a hydraulic system being fluidically connected to a head side and a rod side of the at least one hydraulic cylinder, the hydraulic system being fluidically connected to a hydraulic fluid reservoir and the pressurizing device.

Abstract: A stabilizer leg arrangement with a stabilizer leg (25), which is extensible by a hydraulic cylinder (27) into a supporting position in contact with the ground. A piston (32) divides the internal space of the hydraulic cylinder into first and second chambers (34, 35), wherein these chambers are configured to come into fluid communication with each other through a flow channel (41) in the hydraulic cylinder when the piston reaches an advanced end position and abuts against a stop surface. An electronic control device (72) is configured to establish information as to whether or not the stabilizer leg is in the supporting position while taking into account a measuring value (V1) related to the hydraulic pressure in the first chamber (34). The invention also relates to a corresponding method and a mobile working machine comprising such a stabilizer leg arrangement.

Abstract: A stabilizer leg arrangement with a stabilizer leg (25), which is extensible by a hydraulic cylinder (27) into a supporting position in contact with the ground. A piston (32) divides the internal space of the hydraulic cylinder into first and second chambers (34, 35), wherein these chambers are configured to come into fluid communication with each other through a flow channel (41) in the hydraulic cylinder when the piston reaches an advanced end position and abuts against a stop surface. An electronic control device (72) is configured to establish information as to whether or not the stabilizer leg is in the supporting position while taking into account a measuring value (V1) related to the hydraulic pressure in the first chamber (34). The invention also relates to a corresponding method and a mobile working machine comprising such a stabilizer leg arrangement.

Abstract: A stabilizer leg device with a stabilizer leg to be moved downwards from an object so as to stabilize the object by bearing through a footplate (7) on the ground (20). The device comprises a holder (8) fixed to the object and receiving and holding a first stabilizer leg member (9) vertically displaceable. A first power member (10) displaces the first stabilizer leg member in relation to the holder. A second power member (11) displaces a second stabilizer leg member (12), and thereby the footplate (7) at the end thereof, in relation to the first stabilizer leg member (9). A locking arrangement will automatically lock the first stabilizer leg member in relation to the holder against vertical movements with respect thereto when the second stabilizer leg member (12) reaches a given position when moving downwards and automatically transfer the locking arrangement into an unlocked state when retracting the second stabilizer leg member (12) beyond said position.

Abstract: An apparatus for control of a liquid level, especially water level, comprising a partition (10) arranged in a drain channel (24) and having an upper edge (12) which serves as overflow. At its lower or bottom edge (14) opposite the upper overflow edge (12) the partition (10) is supported for swinging (axis of rotation 16) at the bottom of the drain channel (24). Extending obliquely upwardly from the bottom of the drain channel (24), away from the water end (18), the partition (10) is held by a level control means (20).