Abstract: A hydrostatic axial piston machine, in particular a swashplate machine, has a cylinder drum (3) mounted so that it can rotate around an axis of rotation (2). The cylinder drum (3) is provided with cylinder bores (4), in each of which a piston (5) is mounted so that it can be displaced longitudinally. The cylinder drum (3) is axially supported on a control surface (8) affixed to the casing and on which an inlet connection (10) and an outlet connection (11) are realized. The cylinder bores (4) can each be placed in communication by a connecting channel (12) with the control surface (8). The connecting channel (12) is provided with a cross-section that increases from the cylinder bore (4) toward the control surface (8).

Abstract: A drive axle for a working machine, in particular an industrial truck, has at least one electrical traction motor (1 or 2) and a second electrical machine, the traction motor (1 or 2) being arranged in the axial direction. In order to extend the field of use of the drive axle, according to the invention, the second electrical machine is electrically connected to the traction motor (1 or 2) and forms, together with the traction motor, an electrical converter. The second electrical machine is drive-connected to a combustion engine (12) and is provided as the generator (11) of the electrical converter.

Abstract: An industrial truck includes a radiator (3), a cooling air line (4), and a filter (6) that is located in the vicinity of the cooling air line (4). A cleaning device that can be effectively connected with the filter (6) can be integrated into the cooling air line (4). The cleaning device has a wiper (9) that can be moved along the outside surface of the screen (6) and is equipped so that it can be engaged with a drive device and can be fastened to a lever arm in the form of a parallel arm (10).

Abstract: A fork lift truck drive axle (1?) is elastically fastened to a vehicle frame and with a lift mast (8) connected with the drive axle (1?) and can be inclined around an axial centerline (A) of the drive axle (1?) by at least one tilting cylinder (10). The drive axle (1?) is fastened to the vehicle frame by forward bearing elements (5) and by rear bearing elements (6) of a torque bearing system (torque arms 2a, 2b). The drive axle (1?) can be pivoted around a swiveling axis (S) oriented horizontally and transversely in the vicinity of the rear bearing elements (6). The lift mast (8) can also be inclined relative to the drive axle (1). The tilting cylinder (10) is connected in an articulated manner to the vehicle frame and the lift mast (8) and is oriented parallel or approximately parallel to a plane (E) which extends from the axial centerline (A) to the swiveling axis (S).

Abstract: An industrial truck driver protection roof has a frame with front-end and rear-end vertical load-bearing struts (T1-T4) that are located at a distance from each other in a transverse direction of the vehicle, and horizontal roof trusses (D1-D13) that are located in the roof area. The frame has two prefabricated assemblies (I, II) that are configured so that they can be connected to each other. Each assembly (I and II) includes two load-bearing struts (T1, T2 and T3, T4) and at least one roof truss (D1, D2, D3 and D4, D5, D6, respectively) that connects the load-bearing struts (T1, T2 and T3, T4, respectively) to each other.

Abstract: A hydrostatic drive system has a consumer (7), in particular a hydraulic motor, located in the open circuit. Associated with the consumer (7) is at least one pressure limiting device (11a; 11b) that can be actuated in the braking phase for the generation of a braking pressure that is present on the discharge side of the consumer (7) from a minimum response pressure in the direction of an increase of the response pressure. A feeder device (12a; 12b) provides a feed of pressure fluid into the admission side of the consumer (7). The pressure limiting device (11a; 11b) and the feeder device (12a; 12b) are integrated into a valve unit (10a; 10b).

Abstract: A fork-lift truck has a battery-electric drive system, a driver's stand (10) having a driver's platform (11) for a standing operator formed between a load part (1) and a drive part (5) having a counterweight. The counterweight is formed by a battery pack device having at least one battery pack (9). The driver's stand (10) extends over the entire vehicle width. In this case, the drive part (5) has an equipment area (6), the battery pack device being arranged in a battery compartment (8), which is arranged above and/or adjacent to the equipment area (6), of the drive part (5).

Abstract: A counterweighted fork-lift truck has a vehicle frame (1) with a frame segment (2) having a lateral frame opening (2b). A pivoting door (3) covers the frame opening (2a). The door (3) is connected to the vehicle frame (1) by a double hinge (5). Protection against buckling is provided such that when the door (3) is in the closed position, an intermediate door leaf (3a) located between the axes of rotation (A1, A2) can be blocked in position with respect to an adjacent main leaf (3b). The protection against buckling has a spring element (24) with which, in the closed position of the door (3), the intermediate leaf (3a) is biased toward the open position and is in engagement with a stop (25), which is fastened to the main leaf (3b). The intermediate leaf (3a) and the main leaf (3b) enclose an obtuse angle (S).

Abstract: An industrial truck T, in particular a counterweighted fork-lift truck, has a vehicle chassis (1) which surrounds an auxiliary equipment compartment C. A step recess (5) forms a section of the boundary of the auxiliary equipment compartment. To simplify the service and maintenance of the industrial truck, the step recess (5) has a service and maintenance opening (5a) which can be closed by a service and maintenance cover (6), through which opening (5a) the auxiliary equipment compartment can be accessed.

Abstract: An industrial truck has a steering axle with two axle tree bolster systems located at a lateral distance from each other. Each system has an axle body with an axle shaft (1) and an axle tree bolster (2) located on the lower end of the axle shaft (1). The axle tree bolster (2) and the axle shaft (1) are individual components that are connected with each other. The axle tree bolster (2) is preferably detachably fastened to the axle shaft (1). The rotational position of the axle tree bolster (2) relative to the axle shaft (1) can be adjustable. Means can also be provided for the positive and/or non-positive transmission of a torque from the axle shaft (1) to the axle tree bolsters (2).

Abstract: An industrial truck includes a tiltable lifting mast (1), a first tilting cylinder (2), and a second tilting cylinder (3). The two tilting cylinders (2, 3) are of double-acting design and are connected hydraulically in parallel. Two hydraulic lines (5, 6) are provided for the purpose of supplying hydraulic fluid to the tilting cylinders (2, 3). In order to simplify the design of the industrial truck, according to the invention the hydraulic lines (5, 6) open out at the cylinder base of the first tilting cylinder (2) and/or at a component (joint eye 10) adjacent thereto, the cylinder base and/or the component (joint eye 10) being formed at least partially as a hydraulic distributor.

Abstract: An industrial truck has a lifting mast (1) with a fixed mast (1a) and at least one movable mast (1b) that can move vertically in relation to the fixed mast. A load lifting device (2) can be moved up and down on the movable mast (1b). Located on the movable mast (1b) and/or on the load lifting device (2) is at least one electrical component which is connected with at least one electrical cable (3). The cable (3) is guided through a cable storage device (4) which is constructed according to the pulley block principle.

Abstract: A drive section of an industrial truck has a vehicle frame (1), a drive unit (4) having a steerable drive wheel, and at least one pivoting roller (5, 6) located at a lateral offset in relation to the drive wheel (4d). The vehicle frame (1), when viewed in the transverse direction of the drive section, has a first, centrally located mounting for the drive unit (4) and a second, laterally located mounting for the drive unit (4). Optionally, a drive unit (4) or a pivoting roller (5, 6) can be fastened to the mounting that is located to the side. The vehicle frame (1) has a mounting for a pivoting roller (5, 6) on the side opposite the lateral mounting for the drive unit (4).

Abstract: A lifting framework for an industrial truck has an extendible mast guided on a guide mast by rollers. Means are provided for bracing the extendible mast with the guide mast so as to prevent the extendible mast from inclining in the lateral direction of the lifting framework relative to the guide mast. The bracing means are configured such that, when the extendible mast is located in the top end position, a vertical movement of the extendible mast relative to the guide mast is prevented in the region of each of the two columns. A hydraulic lifting cylinder and a stop for the top end position of the extendible mast are arranged here in the region of each column.

Abstract: An industrial truck has a vehicle frame (1) with a support section (3) that holds a battery block (4). For insertion and removal of the battery block (4), there is a lateral frame opening (3b) and a top frame opening (3a). The vehicle frame (1) has a side member (6) configured to span the support section (3). The side member (6) can be pivoted between a closed position in which it spans the support section (3) and is a component of the load-bearing structure of the vehicle frame (1) and an open position in which it allows access to the support section (3).

Abstract: An industrial truck, in particular counterbalance fork-lift truck, has a front drive axle (2) which has at least one electric drive motor and is fastened together with other components (K) to a vehicle frame (1). A component carrier (T) adjoining the drive axle (2) at the rear in the longitudinal direction of the vehicle is rigidly connected to the drive axle (2) and at least one vibration-producing and/or vibration-transmitting component (K) is fastened on the component carrier (T). The drive axle (2) with the component carrier (T) and the components (K) fastened thereon form a preassembled axle assembly, which is elastically mounted on the vehicle frame (1).

Abstract: A counterweighted fork lift truck has a vehicle body (2) with an equipment compartment (R) located underneath a driver workplace (1). The equipment compartment and contains heat-emitting components. The vehicle body (2) includes at least one step (3) which forms the lower boundary of a step recess (3a) which is inboard with respect to the lateral contour (S) of the vehicle body. At least one air intake opening (5) for the supply of cooling air into the equipment compartment (R) is located in the vicinity of the step recess (3a).

Abstract: A control mechanism has an operating lever (1) connected with a bearing ball (1a) with an integrated permanent magnet (4), the poles of which are located vertically one above the other, and which when the operating lever (1) is deflected move together with the bearing ball (1a). At least one contactless sensor (5) is provided for the measurement of a deflection of the operating lever (1) by measuring the orientation of the permanent magnet (4). The sensor (5) is located vertically underneath the bearing ball (1a) and immediately next to it.

Abstract: A hydrostatic drive axle has two hydrostatic axial piston motors utilizing a swashplate design located coaxially next to each other, the control sides of which face each other. Tubular terminal segments (1a) of the drive axle are in the form of axial piston motors (2) and are shaped and fitted on a center segment (1b), in which there is a control base seat (3) that is common to the two axial piston motors (2). To make possible easy assembly and disassembly, the control base seat (3) is shaped and fitted in the center segment.

Abstract: A multiple-stroke hydrostatic axial piston machine has a plurality of piston-shaped displacement bodies (13) that can each move longitudinally in a displacement chamber (12) and are each supported by a roller body on a track (9) that is provided with axial cams (10) that generate a reciprocal motion. Each of the roller bodies is a roller (14) which is located in a recess (A) of the displacement body (13) that restricts radial and axial relative movements of the roller (14) with respect to the displacement body (13). The displacement body (13) can be configured as a cage of the roller (14).