A working machine includes a controller configured or programmed to perform an automatic deceleration for automatically decelerating a left traveling motor and a right traveling motor rotated at a second speed by shifting from the second speed to the first speed, and to determine a deceleration threshold that is used for judging whether the automatic deceleration has to be performed or not.

A working machine includes a controller configured to determine a first deceleration threshold corresponding to each of a first traveling pressure, a second traveling pressure, a third traveling pressure, and a fourth traveling pressure, to perform automatic deceleration to reduce rotation speeds of a left traveling motor and a right traveling motor, and to judge whether to perform the automatic deceleration based on the determined first deceleration threshold, the first traveling pressure, the second traveling pressure, the third traveling pressure, and the fourth traveling pressure.

An earth moving implement incorporating left and right rails; a bucket between the left and right rails; left and right pivot axles interconnecting the bucket and the left and right rails for rotating the bucket between earth scooping and blading position; left and right arms extending leftwardly and rightwardly from the bucket's left and right ends, the arms' proximal ends underlying the left and right rails; left and right linear motion actuators respectively positioned leftwardly and rightwardly from the left and right rails, the actuators having bucket ends pivotally attached to the left and right arms; left and right columns rigidly positioned at the rails' rearward ends, the actuators' base ends being pivotally attached to the left and right columns for rotating the bucket; a plurality of wheels rollably mounted to the rails' rearward ends; and a towing tongue rigidly extending from the rails' forward ends.

A hydrostatic drive includes a diesel engine and a hydrostatic adjustable machine which supplies multiple consumers in normal operation as a pump. The machine has a pressure/flow regulator to which is communicated, according to the load-sensing principle, the highest load pressure of the consumers, in particular when the machine is operated as a pump. In order to realize a start/stop function of the diesel engine, a previously charged high-pressure reservoir supplies the hydrostatic machine, which then acts as a starter motor for the diesel engine. In order to switch from pump to starter motor, the hydro-machine is adjusted over zero. In order for this switch to take place quickly and reliably, the pressure/flow regulator is deactivated by means of a switching valve and the adjustment device is supplied with an adjustment pressure medium via the switching valve, which medium is taken from the high-pressure reservoir or from an auxiliary reservoir.

A working machine is provided, which includes a prime mover, a first traveling pump driven by power of the prime mover to supply operation fluid through a connector fluid tube, a traveling motor including first and second ports connected to the connector fluid tube, the traveling motor configured to be switched in a first speed and a second speed higher than the first speed, a first pressure detector to detect first traveling-pump pressure near the first port, a second pressure detector to detect second traveling-pump pressure near the second port, and a controller configured, with the traveling motor switched in the second speed, to automatically shift down the traveling motor from the second speed to the first speed, when a differential pressure between the first traveling-pump pressure and the second traveling-pump is equal to or more than a deceleration threshold.

A multi-coupling component (20) includes a plurality of fluid couplers (22, 24, 26, 28) that are fluidly connected to a plurality of corresponding fluid flow pathways (80, 84), and a case drain fluid coupler (32) that is fluidly connected to a low pressure drain fluid pathway (88); and a pressure relief mechanism (40) that is configured to be moved between a disconnected state, a partially connected state, and a fully connected state. The pressure relief mechanism is configured such that in the partially connected state the fluid flow pathways and drain fluid pathway are fluidly connected to perform a pressure relief function, and in the disconnected state and the connected state the drain fluid pathway is isolated from the fluid flow pathways. The pressure relief mechanism includes a pressure relief button, wherein the pressure relief button is depressed to move the pressure relief mechanism from the disconnected state to the partially connected state and to the connected state. The pressure relief mechanism may be operated manually by hand for the subsequent connection of individual fluid couplers, or automatically when a second multi-coupling component is attached to the multi-coupling component that has the pressure relief mechanism.

A travelling frame of a travelling device positioned between a center frame and a travelling motor attachment portion includes an upper plate extended toward the center side of the vehicle to form an extended portion. A long hole into which travelling motor hydraulic piping is inserted is formed in the upper plate along the extended portion. The travelling motor hydraulic piping extends from a lead-out hole opened in an end plate of the center frame, through the long hole of the upper plate and a long hole opened in an end plate, and inserted into the travelling motor attachment portion.

Disclosed is a device for relieving pressure in hydraulic lines, in particular in connecting lines that have coupling points (6, 8) and are located between attachments comprising hydraulically actuated actuators and working implements supplying said attachments. The disclosed device comprises a control block (2) which is connected to the line to be relieved and which includes an openable non-return valve (12) as a relief valve, a pressure accumulator (22) which holds a relieving volume when the non-return valve is open, and an actuating member (38) which can be moved manually in order to open the non-return valve (12) and which is arranged so as to be movable on the housing (24) of the pressure accumulator (22).

A work vehicle includes a vehicle body frame, a cab frame attached to the vehicle body frame so as to be rotatable around a pivot axis, a support provided on the cab frame, a fastener provided on the cab frame and between the support and the pivot axis in a radial direction from the pivot axis, a hydraulic hose, and a hose installation member. The hose installation member includes an engaging portion connected to the fastener, an extending portion configured to be supported on the support, a beam portion connecting the engaging portion and the extending portion, and a first hose holding member provided on the beam portion and having a first opening through which the hydraulic hose passes.

The present invention relates to a multi-coupling device of the plate type for the simultaneous connection of a plurality of hydraulic, electric and pneumatic lines through quick couplings. The device according to the present invention is characterized in that it comprises bayonet coupling means which allow the coupling of the two plates by means of the relative sliding of the mobile plate with respect to the fixed plate. By virtue of the presence of a dedicated hydraulic circuit which connects the female couplings of the fixed plate to one another, the multi-coupling device according to the present invention allows to separate the step of coupling of the plates from the step of hydraulic connection of the male and female couplings.