Gkn Walterscheid Gmbh

Claas Selbstfahrende Erntemaschinen Gmbh

Walterscheid Gmbh

Herbert Coenen

Wolfgang Adamek

Holger Jung

Martin Hector

Matthias Littau

Stefan Korber

Paul Herchenbach

Clemens Nienhaus

Klaus Kampf

Andreas Roth

Horst Kretschmer

Wilhelm Schott

Andreas Sarfert

Hubert Grosse Entrup

Andreas Höck

Joachim Laubner

Klaus K&auml;mpf

J&uuml;rgen Vollmer

Marc Zimmermann

Kurt Kirschbaum

Heinrich Henseler

Achim Schröder

Dieter Kropp

Heinrich Dückinghaus

Michael RÜTHER

Stefan KÖRBER

A protective device for a universal shaft () has an attachment element (), a tubular protective guard () and a latching device (). The attachment () is positioned around a shaft journal () projecting from a housing () and is attached to said housing (). The tubular protective guard () extends along a longitudinal axis L and is positioned around a universal shaft () connected to the shaft journal (). The latching device has at least one latching element () and at least one latching projection (). The latching element () is arranged on either the attachment element () or the protective guard. The latching projection () is arranged on either the protective guard () or the attachment element (). The latching element () is displaceable between a latched position and a release position. The latching element () is elastically formed and engages, in the latched position, behind the latching projection ().

Protective device for a universal shaft as well as protective arrangement with universal shaft and such a protective device

A universal joint shaft protection arrangement has a protection device () with at least one protection cone () and a projection pot (). The protection pot () is attached to a stationary component. The protection cone () at least partially accommodates the protection pot in an axially overlapping manner. At least one driver (') is retained at the outside on the protection cone (). The at least one driver (&#x2032;) radially engages a first recess (&#x2032;) in the protection cone () and a second recess (&#x2032;) in the protection pot () to support the protection cone () and the protection pot () in a circumferential direction against one another. The second recess (&#x2032;) is formed as a slot in the protection pot ().

Protection arrangement for a universal joint shaft

A protective device for a universal shaft () has an attachment element (), a tubular guard () and at least one latching device (). The attachment element () is positioned around a shaft journal () projecting from a housing (). The tubular protective guard () extends along a longitudinal axis L and is positioned around a universal shaft () connected to the shaft journal (). The at least one latching device () attaches the protective guard () on the attachment element (). The protective guard () has at least one joining lines () extending in the longitudinal direction L. The protective guard () can be separated and opened to receive the universal shaft ().

Protective device for a universal shaft and protective arrangement with a universal shaft and such a protective device

A length adjustable lifting strut () for a hitch linkage of a tractor has two connection elements () for connecting the lifting strut () to components () of the hitch linkage. A fine adjustment mechanismis provided on the lifting strut () to finely adjust the length of the lifting strut. A quick adjustment mechanism () is provided to adjust the lifting strut () length and is retainable in at least two discrete positions.

Length adjustable lifting strut

A generator unit for tractors () has a housing (), which can be non-rotationally mounted on a component of the tractor (). An input shaft is rotationally supported in the housing () and connectable to a power take-off shaft () of the tractor (). An electrical generator () is coupled with the housing. The electrical generator () has a stator and a rotor, which is drive-wise connected to the input shaft and is driven by the same. The electrical generator () serves to driver electrical loads of the tractoror of an agricultural device.

Generator unit for tractors and electrical drive system for agricultural devices

A device for setting the length of a top rink ( ) of an attaching device of a tractor ( ) has a piston/cylinder unit ( ) for length setting purposes. The piston/cylinder ( ) has a displacement sensor ( ) which records the respective actual length setting of the top link ( ). The displacement sensor ( ) generates an actual proportional length signal. A lift position sensor ( ) is provided which generates an electric signal representing the respective actual lift position of the lower steering arms ( ). A nominal length setting of the top link ( ), which refers to the respective actual lift position, can be stored in a storage unit ( ). When a new actual lift position is reached during the automatic mode of operation, it is possible to generate an electric control signal which corresponds to the nominal length setting of the top link ( ). The signal is transmitted to the comparator of a control unit ( ). The comparator compares the control signal with the actual length signal. The control unit controls the piston/cylinder ( ) as a function of the deviation of the signals from one another, towards a nominal length setting. In this way it is possible, automatically, to achieve optimum kinematics for an implement attached to a tractor, without any outside interference.

Device for setting the length of a top link of an attaching device of a tractor

The invention relates to a device for stabilizing the two lower steering arms (,) of a tractor. The lower steering arms (,) can be actuated by a hydraulic power lift (,). Each lower steering arm (,) is associated with a side strut (,) which includes a single-acting hydraulic cylinder (,) to stabilize and secure the lower steering arm (,). A pre-selection valve (,) and a control valve (,) enable the hydraulic cylinders to be connected to the power lift (,) either via a line or loaded separately by a second pressure source (P,). Thus, independently of the actuation of the power lift (,), the two lower steering arms can be centrally centered by the hydraulic cylinders (,).

Device for stabilizing the lower steering arms of a tractor

A device for setting the length of a top link (,) of an attaching device of a tractor (,) has a piston/cylinder unit (,) for length setting purposes. The piston/cylinder (,) has a displacement sensor (,) which records the respective actual length setting of the top link (,). The displacement sensor (,) generates an actual proportional length signal. A lift position sensor (,) is provided which generates an electric signal representing the respective actual lift position of the lower steering arms (,). A nominal length setting of the top link (,), which refers to the respective actual lift position, can be stored in a storage unit (,). When a new actual lift position is reached during the automatic mode of operation, it is possible to generate an electric control signal which corresponds to the nominal length setting of the top link (,). The signal is transmitted to the comparator of a control unit (,). The comparator compares the control signal with the actual length signal. The control unit controls the piston/cylinder (,) as a function of the deviation of the signals from one another, towards a nominal length setting. In this way it is possible, automatically, to achieve optimum kinematics for an implement attached to a tractor, without any outside interference.

A device for stabilizing the two lower steering arms (,) of a tractor, with the lower steering arms (,) actuated by a hydraulically operated power lever (,). The arms are each associated with a side strut (,) with a first single-acting hydraulic cylinder (,) for stabilizing and fixing purposes. A line connection between the first single-acting hydraulic cylinders (,) and the power lever (,) can be effected by a control valve (,). In order to center the lower steering arms (,) and set the arm to a pre-determined dimension of spread, even when no implement is attached, the line (,) which leads to the second single-acting hydraulic cylinder (,) of the power lever (,) contains a pressure-controlled first return valve. A bypass line (,) with a second return valve (,) is provided to lock in the direction opposite to that of the first return valve.

Device for stabilizing the two lower steering arms of a tractor

A torque limiting coupling for a driveline for driving agricultural implements has a coupling hub (,) with first recesses (,) which receive adjustable driving members (,). The coupling hub (,) further includes second recesses (,) which include a spring assembly (,). Switching cams (,) of the spring assembly (,) load the associated driving member (,). A coupling sleeve (,) is arranged around the coupling hub (,). Covers (,) laterally seal the unit and laterally guide the coupling hub (,). Sealing rings (,) are provided to render the unit oil-proof. Oil at least partially fills the free space between the components. Thus, the unit ensures in the case overloading occurs, the driving members (,), which engage a groove (,) in the torque transmitting position, cannot return into the groove (34) until a relatively low rotational speed has occurred. At high relative rotational speeds, the oil contained in the grooves (,) during rotation prevents the driving members from re-entering the grooves (,).

Torque limiting coupling for a driveline

A protective device for telescopic driveshafts used in driving agricultural implements has two protective tubes (8, 9) which are axially inserted into, and overlap, one another. The tubes (8, 9) are adjustable relative to one another along their longitudinal axis (5) and are made of plastics. The outer protective tube (8) includes three circumferentially distributed pairs of ribs ( 13, 14). The ribs (13, 14) are arranged at a distance from one another and a groove (11) is formed between the ribs (13, 14). Guiding webs (15) are provided between pairs of ribs ( 13, 14). The webs (15) project inwardly towards the longitudinal axis (5) from the inner face (12) of the outer protective tube (8). The webs (15) also project inwardly towards the longitudinal axis (5) and serve to center and radially support the tube (9). The outer face of the outer protective tube has a smooth finish. Thus, there are no projections which may possibly injure the operative when unintentionally rotating the protective device.

Growing community of inventors

Lohmar, Germany

Wolfgang Adamek