MANITOU BF

A load-handling vehicle comprising a load-handling member, a jack for lifting the load-handling member, and a fluid source is provided. The jack may include a lifting chamber and a lowering chamber. The fluid source may be coupled to the lifting chamber and the lowering chamber at a first fluid connection and a second fluid connection, respectively. The first fluid connection may comprise a safety valve normally open in a direction of the flow from the fluid source toward the lifting chamber and normally closed in a direction of flow from the lifting chamber toward the fluid source. A pressure-sensitive valve arranged on the second fluid connection may be controlled in response to the pressure between the safety valve and the fluid source. Additionally, a unidirectional fluid circulation line may fluidly couple the first fluid connection and the second fluid connection.

The invention relates to a handling machine ( 1 ) comprising: a chassis ( 2 ); a lifting arm ( 20 ); a front axle ( 3 ) and a rear axle ( 4 ); a cab ( 6 ) which is positioned between the front axle ( 3 ) and the rear axle ( 4 ) and on a first side of the lifting arm ( 20 ); at least one electric motor; a first and a second electrical energy storage unit which are connected to the at least one electric motor and fixed to the chassis ( 2 ) on either side of the lifting arm ( 20 ), the first electrical energy storage unit ( 40 A) being positioned to the rear of the cab ( 6 ) on the first side of the lifting arm ( 20 ) and the second electrical energy storage unit ( 40 B) being arranged on a second side of the lifting arm ( 20 ), opposing the first side, at least partially opposite the first electrical energy storage unit in a transverse direction at right-angles to the median longitudinal plane.

Forklift truck ( 1 ) mounted on a carrier vehicle and comprising a frame ( 16 ), forks ( 2 ), a lifting cylinder ( 4 ) for relatively moving the forks ( 2 ) and the frame ( 16 ) so as to allow, in a handling mode of operation, wherein the forks ( 2 ) are mounted so as to move freely upwards and downwards relative to the ground, the forks ( 2 ) to be lifted, and in a carrying mode of operation, wherein the forks ( 2 ) are in the high position and immobilised so that they do not move upwards and downwards relative to the ground, to allow the frame to be lifted ( 16 ), each chamber ( 7, 8 ) of the cylinder ( 4 ) being provided with a connecting fluid duct which connects the chamber ( 7; 8 ) to a hydraulic source. In the handling mode of operation, the forks ( 2 ) form an element which is used to actuate the lifting cylinder ( 4 ) in the direction in which the forks ( 2 ) are lowered, the fluid ducts of the chambers ( 7, 8 ) of the lifting cylinder ( 4 ) being connected to one other by a fluid connection provided with a closing member in the closed position at least in the carrying mode of operation when the frame ( 16 ) is being driven in the direction in which the frame ( 16 ) is lifted.

The invention relates to a handling machine ( 1 ) comprising: a rotating chassis; a lifting arm ( 7 ); a first assembly comprising a device for storing electrical energy ( 9 ); a second assembly comprising a fuel cell ( 10 ) which is connected to the device for storing electrical energy ( 9 ) via a connecting circuit ( 35 ); and a third assembly comprising at least one tank ( 11 ); wherein one of the first, the second and the third assemblies is fixed to one of the lower and upper structures ( 2, 3 ) and the two others of the first, second and third assemblies are fixed to the other of the lower and upper structures ( 2, 3 );

The invention relates to a blocking device ( 20 ) for a lifting cylinder ( 6 ) and to a handling machine ( 1 ) with lifting arm ( 5 ). The blocking device ( 20 ) comprises two blocking elements ( 30, 40 ). The two blocking elements ( 30, 40 ) are configured to be assembled to one another in an assembled configuration in which the two blocking elements ( 30, 40 ) together delimit a central space through which the rod ( 62 ) of the lifting cylinder ( 6 ) passes. The blocking device ( 20 ) blocks a movement of the lifting arm ( 5 ) towards its lower position.

Basket ( 1 ) comprising: a platform ( 7 ), a drive system ( 2 ) for moving the platform ( 7 ), a control desk ( 3 ) equipped with controls ( 4 ) of the system ( 2 ), a flexible safety link ( 5 ), two retaining systems ( 6 ) for keeping the link ( 5 ) in a position in which the link ( 5 ) extends across the platform ( 7 ), a detection device for detecting deformation of the link ( 5 ), having a detection member configured so that, under the effect of deformation of the link ( 5 ), it passes from a state referred to as inactive, in which operation of the controls ( 4 ) of the drive system ( 2 ) for moving the platform ( 7 ) is not disabled to a state referred to as active, in which said operation is disabled, one of the retaining systems ( 6 ) comprising a rotary member for winding the link ( 5 ) equipped with a return member for returning said rotary member in the direction of winding of the link ( 5 ) around said rotary member.

A method of controlling a fuel cell of a working machine is disclosed, the method including the following steps: determining an operating mode of the working machine from at least two operating modes as a function of at least one variable chosen from: a driver presence variable, a motor speed variable, a machine speed variable, a loading mode active variable, a stabilizer variable, a charging variable, and a control activity variable; determining a state of charge of the energy storage unit; and controlling the fuel cell using a predetermined set point as a function of the state of charge of the energy storage unit and the operating mode of the working machine so determined.

The invention relates to a drive system ( 100 ) for a mobile work machine, the drive system ( 100 ) including a hydrostatic drive module including at least one hydrostatic pump ( 101 ) connected to at least one hydrostatic motor ( 102 ), the hydrostatic motor ( 102 ) being coupled to at least one driving wheel ( 5 a ) of the mobile work machine in order to rotate the at least one driving wheel ( 5 a ), and at least two electric motors ( 105, 106 ) for driving the hydrostatic pump ( 101 ), the two electric motors ( 105, 106 ) and the hydrostatic pump ( 101 ) being mounted in series on a common main shaft ( 104 ) for synchronous rotation thereof.