Abstract: A drive assembly for vehicles with front wheels and rear wheels, especially for tractors, agricultural machinery, construction machinery or for self-driving machines, has an engine (1), a first drive (15) to drive the rear wheels, a second drive (27) to drive the front wheels, an adjustable hydraulic pump (5) driven by the engine (1), and an adjustable first hydraulic motor (9). The first hydraulic motor (9), with respect to drive, is connected to the first drive (15) to drive the rear wheels. Also, the first hydraulic motor, with respect to drive, may be connected to the second drive (27), to drive the front wheels. A second hydraulic motor (10), with respect to drive, can be connected to the second drive (27) to drive the front wheels. The first hydraulic motor (9) has a high coefficient of efficiency within a first driving speed range of the vehicle. The second hydraulic motor (10) has a high coefficient of efficiency within a second driving speed range of the vehicle.

Abstract: A torque limiting coupling has a first coupling hub (2) with first driving members (10), and a second coupling hub (27) with second driving members (35). The hubs (2, 27) are jointly received in a coupling sleeve (46) and are rotatable independently of one another. When a set torque is exceeded while the first coupling hub (2) is driven in one of two driving directions of rotation N1 or N2, the second coupling hub (27) is subjected to a force which ensures that, in the driving direction of rotation N1, the driving members (10) of the first coupling hub (2) are transferred into the disconnected position and that, in the driving direction of rotation N2, the second driving members (35) of the second coupling hub (27) are transferred into the disconnected position.

Abstract: A device for measuring torque and the direction of rotation in a drive assembly, has a torsion element (9) which can be torque-loaded and rotatingly driven for the purpose of transmitting torque around an axis of rotation (8). A first transmitter element (16) attached in a rotationally fast way to the torsion element (9). The first transmitter element (16) is moved on a first rotational circle. A second transmitter element (34) is positioned at a reference distance from the first transmitter element 16. The second transmitter element (34) is connected in a rotationally fast way to the torsion element (9) and is moved on a second rotational circle. A sensor unit 35 is fixed and arranged at a distance from the axis of rotation (8). The sensor unit (35) senses the passage of the transmitter elements 16, 34 or of a reference edge or a reference surface and generates a corresponding sequence of signals.

Abstract: A device for measuring torque in a drive assembly includes a torque-loaded torsion element (9), such as a shaft, and a reference element (21) surrounding the torsion element (9). The reference element is correspondingly tubular in shape. A first tube end (22) of the reference element (21) is firmly connected to a first shaft end (10) of the torsion element (9). A second tube end (24) of the reference element (21) is supported on the second shaft end (11) of the torsion element (9). The two tube ends (22, 24) are each associated with a transmitter element (16, 34). The relative position of the transmitter elements (16, 34) in the direction of rotation around the rotational axis (8) is recorded by a sensor element (35). The sensor (35) is associated with a housing (1). The sensor (35) generates a signal each time the two transmitter elements (16, 34) pass and transmits signals to an evaluation unit (36). The evaluation unit (36) determines the torque applied from the offset of the signals.

Abstract: A centered double universal joint has a first outer joint yoke 1 with first outer yoke arms 2 connected to one another by a first bridge 3. A first cenering mechanism 4, 6 is on the first bridge 3. A first inner joint yoke 8 couples with the first inner yoke arms. A first cross member 10 connects the first outer yoke arms 2 to the first inner yoke arms. The first cross member 10 has a first lubricant supply 44, 47. A second outer joint yoke 12 with second outer yoke arms 13 are connected to one another by a second bridge 14. Second centering mechanism 15, 17 is on the second bridge 14. A second inner joint yoke 19 couples with the second inner yoke arms. A second cross member 21 connects the second outer yoke arms 13 to the second inner yoke arms. The second cross member 21 has a second lubricant supply 44′, 47′. A guiding disc 25, defining a longitudinal axis 31, has a first central centering projection 28 articulatably connected to the first centering means 4, 6.

Abstract: A device for measuring torque and the direction of rotation in a drive assembly, has a torsion element (9) which can be torque-loaded and rotatingly driven for the purpose of transmitting torque around an axis of rotation (8). A first transmitter element (16) attached in a rotationally fast way to the torsion element (9). The first transmitter element (16) is moved on a first rotational circle. A second transmitter element (34) is positioned at a reference distance from the first transmitter element 16. The second transmitter element (34) is connected in a rotationally fast way to the torsion element (9) and is moved on a second rotational circle. A sensor unit 35 is fixed and arranged at a distance from the axis of rotation (8). The sensor unit (35) senses the passage of the transmitter elements 16, 34 or of a reference edge or a reference surface and generates a corresponding sequence of signals.

Abstract: A coupling assembly for agricultural implements has a friction coupling (1), an electromagnet (6) and control mechanism (7). The friction coupling (1) includes a friction assembly (4) which is loaded by a pressure plate (14). The pressure plate (14) is loaded by pressure springs (15, 16). The pressure plate (14) is adjustable by an actuating device (5) which includes an electromagnet (6) and an anchor plate (19). The control mechanism (7) includes a control member (27) which, by changing the electric current, regulates the pressure force of the pressure plate (14) during the coupling and/or uncoupling operation. The housing (2) and the hub (3) are associated with speed sensors (25, 26) which transmit a signal to the control mechanism (7) to relieve the load on the friction assembly. Thus, this prevents the friction coupling (1) from overheating.

Abstract: A torque limiting coupling has a first coupling hub (2) with first driving members (10), and a second coupling hub (27) with second driving members (35). The hubs (2, 27) are jointly received in a coupling sleeve (46) and are rotatable independently of one another. When a set torque is exceeded while the first coupling hub (2) is driven in one of two driving directions of rotation N1 or N2, the second coupling hub (27) is subjected to a force which ensures that, in the driving direction of rotation N1, the driving members (10) of the first coupling hub (2) are transferred into the disconnected position and that, in the driving direction of rotation N2, the second driving members (35) of the second coupling hub (27) are transferred into the disconnected position.

Abstract: A centered double universal joint has a first outer joint yoke 1 with first outer yoke arms 2 connected to one another by a first bridge 3. A first cenering mechanism 4, 6 is on the first bridge 3. A first inner joint yoke 8 couples with the first inner yoke arms. A first cross member 10 connects the first outer yoke arms 2 to the first inner yoke arms. The first cross member 10 has a first lubricant supply 44, 47. A second outer joint yoke 12 with second outer yoke arms 13 are connected to one another by a second bridge 14. Second centering mechanism 15, 17 is on the second bridge 14. A second inner joint yoke 19 couples with the second inner yoke arms. A second cross member 21 connects the second outer yoke arms 13 to the second inner yoke arms. The second cross member 21 has a second lubricant supply 44′, 47′. A guiding disc 25, defining a longitudinal axis 31, has a first central centering projection 28 articulatably connected to the first centering means 4, 6.

Abstract: A coupling assembly for agricultural implements has a friction coupling (1), an electromagnet (6) and control mechanism (7). The friction coupling (1) includes a friction assembly (4) which is loaded by a pressure plate (14). The pressure plate (14) is loaded by pressure springs (15, 16). The pressure plate (14) is adjustable by an actuating device (5) which includes an electromagnet (6) and an anchor plate (19). The control mechanism (7) includes a control member (27) which, by changing the electric current, regulates the pressure force of the pressure plate (14) during the coupling and/or uncoupling operation. The housing (2) and the hub (3) are associated with speed sensors (25, 26) which transmit a signal to the control mechanism (7) to relieve the load on the friction assembly. Thus, this prevents the friction coupling (1) from overheating.

Abstract: A drive assembly for vehicles with front wheels and rear wheels, especially for tractors, agricultural machinery, construction machinery or for self-driving machines, has an engine (1), a first drive (15) to drive the rear wheels, a second drive (27) to drive the front wheels, an adjustable hydraulic pump (5) driven by the engine (1), and an adjustable first hydraulic motor (9). The first hydraulic motor (9), with respect to drive, is connected to the first drive (15) to drive the rear wheels. Also, the first hydraulic motor, with respect to drive, may be connected to the second drive (27), to drive the front wheels. A second hydraulic motor (10), with respect to drive, can be connected to the second drive (27) to drive the front wheels. The first hydraulic motor (9) has a high coefficient of efficiency within a first driving speed range of the vehicle. The second hydraulic motor (10) has a high coefficient of efficiency within a second driving speed range of the vehicle.

Abstract: A device for measuring torque in a drive assembly comprises a torque-loaded torsion element (9), such as a shaft, and a reference element (21) surrounding the torsion element (9). The reference element is correspondingly tubular in shape. A first tube end (22) of the reference element (21) is firmly connected to a first shaft end (10) of the torsion element (9). A second tube end (24) of the reference element (21) is supported on the second shaft end (11) of the torsion element (9). The two tube ends (22, 24) are each associated with a transmitter element (16, 34). The relative position of the transmitter elements (16, 34) in the direction of rotation around the rotational axis (8) is recorded by a sensor element (35). The sensor (35) is associated with a housing (1). The sensor (35) generates a signal each time the two transmitter elements (16, 34) pass and transmits signals to an evaluation unit (36). The evaluation unit (36) determines the torque applied from the offset of the signals.

Abstract: A drive assembly for an agricultural implement (1) has a first implement portion (2) and a second implement portion (3) pivotable relative to the first implement portion (2) around a pivot axis (x). The first implement portion (2) has a first rotary driving device (4) and the second implement portion (3) has a second rotary driving device (5). The two rotary driving devices (4, 5) are rotationally connected to one another by a shaft assembly (6). The shaft assembly (6) includes a universal joint (7) which adjoins the pivot axis (x). The universal joint (7) includes a cross member with two pairs of arms centered on axes of rotation arranged perpendicularly relative to one another, and two joint yokes. A force-operated setting device (19) transfers the shaft assembly (6) into a rotational position where the axis of rotation of one of the two pairs of arms of the universal joint (7) adjoining the pivot axis (x) at least approaches a parallel line relative to the pivot axis (x).

Abstract: A protective device for a drive assembly with a double universal joint (1) has a protective cone (10) with folds (15). At the cone's first axial end (11), it is secured to a bearing assembly (12). At its second axial end, the cone (10) includes a fixing portion (14) which is connected to a guiding ring (18). The guiding ring (18), via its inner end (21) projects into the part of the protective cone (10) which is provided with the folds. The guiding ring (18) itself is supported on a bearing ring (23). The bearing ring (23), in turn, is supported on an inner double yoke (5). An axial relative movement is permitted between the guiding ring (18) and the bearing ring (23). The guiding ring (18) ensures that the protective cone (10), with the folds (15), is well supported under articulation conditions. Furthermore, the protective cone (10) with its folds (15) has a relatively long length without losing any of its stability.

Abstract: Proposed are free-wheel clutches (12) for a driven axle of an all-wheel-drive vehicle in which the degree to which the steered wheels (17, 18) are connected to the drive (4) depends on the steering angle. A snap-in catch in the clutches (12), as well as a passive locking device (59, 60), are switched over automatically by the output shafts (13, 14), the output shafts being connected to the steered wheels (17, 18) by double crossed joints (15, 16).

Abstract: The invention concerns a device having an originator and a receiver unit (10, 11) and a signal-processing device (17) for detecting different steering angles. The device delivers switch signals, for instance, for actuating differential locks. For identifying discrete steering angles the originator unit (10) operates in conjunction with two sensors (12, 13). The proposed steering-angle sensory analysis is preferably used in axles of tractors and construction machines.

Abstract: In a differential, a clutch links an axially stationary planet carrier with an axially mobile output shaft so that they rotate together. Engaging gears with engaging surfaces parallel to the main axis link an axially stationary clutch part with the output shaft so that they rotate together. Engaging gears with engaging surfaces parallel to the main axis link an axially mobile clutch part with the planet carrier so that they rotate together.

Abstract: An interaxle differential for connection between two driven axles (14) of a motor vehicle comprises a liquid friction coupling (1) and a planetary gear train (15) comprising three torque-transmitting members (16, 18, 20). The liquid friction coupling (1) comprises a liquid-filled housing, a coupling shaft, which coaxially protrudes into said housing at least one set of radially inwardly extending, axially spaced apart outer blades, which are mounted on the housing, and radially outwardly extending, axially spaced apart inner blades, which are fixed to the shaft in said housing and axially staggered from the outer blades. Each of said outer blades is adjustable in a radial plane to vary the radial overlap between the outer and inner blades. A first of said torque-transmitting members of the planetary gear train is directly connected to an input member of the differential gear. A second (20) of said torque-transmitting members is connected to said coupling shaft (3).