Abstract: A blade access arrangement for a rotor blade of a wind power plant having a tower, the arrangement including a platform, a tower guide for guiding the platform against the tower, a bar arrangement capable of being displaced in relation to the platform and connecting the platform with the tower guiding. The blade access arrangement including a hoisting arrangement for hoisting the blade access arrangement up and down, where the bar arrangement includes an extension beam connected to the bar arrangement via a hinge.

Abstract: Temporary enclosure (1) for at least a part of a rotor blade connected to a wind power plant having a tower and a rotor top part, the enclosure (1) having a framework (2); one or more walls (3); a roof (4); said roof extends from said wall towards said blade; said framework (2) stretching said walls (3) said that a volume is enclosed below the roof (4) wherein said framework (2) includes one or more frame parts (5), a connection (6) for connection of the one or more frame parts (5) and an activation means (7) for activation a change in the framework (2) whereby the volume enclosed by the enclosure (1) change.

Abstract: The present invention relates to a water intrusion prevention system (1) mounting on a turbine blade (100) of a wind turbine. In order to exhibit excellent weather protection, the water intrusion prevention system (1) comprises a connecting means (10) adapted for removably fixing the water intrusion prevention system (1) on the turbine blade (100), further a collar sheet (20) disposed on the connecting means (10) and having a collar portion (22) extending away from the connecting means (10), the collar portion (22) constituting an upper collar sealing round about against an outer surface (101) of the turbine blade (100) if the water prevention system (1) is mounted on the turbine blade (100).

Abstract: A blade access arrangement (1) for a rotor blade (2) of a wind power plant having a tower (4) is described, the arrangement (1) including a platform (10) having blade guide means (12, 13) for guiding the platform against the blade and tower guide means (14) for guiding a platform (10) against the tower. Such a blade access arrangement should allow a safe access to the blade. To this end the platform 10 is adjustable in an open configuration, in which the blade can enter the blade guide means, (12, 13), and in a closed configuration, in which the platform (10) is guided by the blade (2).

Abstract: The present invention relates to a water intrusion prevention system (1) mounting on a turbine blade (100) of a wind turbine. In order to exhibit excellent weather protection, the water intrusion prevention system (1) comprises a connecting means (10) adapted for removably fixing the water intrusion prevention system (1) on the turbine blade (100), further a collar sheet (20) disposed on the connecting means (10) and having a collar portion (22) extending away from the connecting means (10), the collar portion (22) constituting an upper collar sealing round about against an outer surface (101) of the turbine blade (100) if the water prevention system (1) is mounted on the turbine blade (100).

Abstract: A pump device (1) is provided comprising: a shaft (2), rotor means (3a, 3b) fixed to said shaft (2) in rotational direction, said rotor means (3a, 3b) having pressure chambers (5a, 5b) the volume of which varying during a rotation of said rotor means (3a, 3b), port plate means (15a, 15b) having a through going opening (16a, 16b) for each of said pressure chambers (5a, 5b) and being connected to said rotor means (3a, 3b) in rotational direction, and valve plate means (17a, 17b) cooperating with said port plate means (15a, 15b). It is intended to pressurize a high volume of fluid, in particular water, within a limited space.

Abstract: A pump arrangement (1) is provided comprising a driving shaft (2), cylinder drum means (3a, 3b) fixed to said shaft (2) in rotational direction and having a plurality of cylinders (6a, 6b), and a piston (7a, 7b) in each cylinder, each piston (7a, 7b) having a slide shoe (8a, 8b) in contact with driving surface means (8a, 8b). Such a pump arrangement should produce a pressure with low undulations. To this end said cylinder drum means (3a. 3b) comprise at least a first cylinder drum (3a) and a second cylinder drum (3b), said cylinder drums (3a, 3b) being fixed to said common shaft (2) in rotational direction, wherein the cylinder drums (3a, 3b) are offset with respect to each other in rotational direction.

Abstract: A pump arrangement (1) is provided comprising a driving shaft (2), cylinder drum means (3a, 3b) fixed to said shaft (2) in rotational direction and having a plurality of cylinders (6a, 6b), and a piston (7a, 7b) in each cylinder, each piston (7a, 7b) having a slide shoe (8a, 8b) in contact with driving surface means (8a, 8b). Such a pump arrangement should produce a pressure with low undulations. To this end said cylinder drum means (3a. 3b) comprise at least a first cylinder drum (3a) and a second cylinder drum (3b), said cylinder drums (3a, 3b) being fixed to said common shaft (2) in rotational direction, wherein the cylinder drums (3a, 3b) are offset with respect to each other in rotational direction.

Abstract: A pump device (1) is provided comprising: a shaft (2), rotor means (3a, 3b) fixed to said shaft (2) in rotational direction, said rotor means (3a, 3b) having pressure chambers (5a, 5b) the volume of which varying during a rotation of said rotor means (3a, 3b), port plate means (15a, 15b) having a through going opening (16a, 16b) for each of said pressure chambers (5a, 5b) and being connected to said rotor means (3a, 3b) in rotational direction, and valve plate means (17a, 17b) cooperating with said port plate means (15a, 15b). It is intended to pressurize a high volume of fluid, in particular water, within a limited space.

Abstract: The invention concerns a vane cell machine with a stator and a rotor having radially displaceable vanes arranged in guides, said vanes bearing on an inside of the stator and bordering, together with the rotor, the stator and a side wall, work chambers at each axial end of the rotor. It is endeavored to provide a vane cell machine that has a good internal tightness, in which the wear is still kept small. For this purpose, in a radially internal area the side wall comprises an insert that is axially movable in the side wall and has a pressure application surface axially inside and axially outside.

Abstract: The invention concerns a vane cell machine having a stator and a rotor that is made of a first material, the rotor having guides comprising radially displaceable vanes that rest on an inside of the stator and border work chambers at each axial end of the rotor together with the rotor, the stator and individual stationary side walls, the vanes having, at least at some contact faces with the rotor and the stator, a second material that interacts unfrictionally with the first material. It is endeavoured to keep the wear small. For this purpose, in a radially inner area, the side wall comprises a surface of a third material interacting unfrictionally with the first material and, in a radially outer area a surface made of the first material.

Abstract: The invention concerns a vane cell machine having a stator and a rotor that is made of a first material, the rotor having guides comprising radially displaceable vanes that rest on an inside of the stator and border work chambers at each axial end of the rotor together with the rotor, the stator and individual stationary side walls, the vanes having, at least at some contact faces with the rotor and the stator, a second material that interacts unfrictionally with the first material. It is endeavoured to keep the wear small. For this purpose, in a radially inner area, the side wall comprises a surface of a third material interacting unfrictionally with the first material and, in a radially outer area a surface made of the first material.

Abstract: Motor start circuit for an induction motor, particularly a single-phase AC induction motor, with a main winding (4) and an auxiliary winding (5), which are supplied with current, particularly alternating current, via current supply connections (24, 25), and with a start switching device (15) serving the purpose of interrupting the current flow through the auxiliary winding (5) after the start of the motor, the start switching device (15) being connected to a control device (20) via a connector (18), the control device (20) being connected between the current supply connections (24, 25), and with a winding protection switch (28), which is normally closed and which opens on the occurrence of a fault. The invention is characterized in that the control device (20) is connected to the winding protection switch (28) via at least one further connector (22, 17), preferably via at least one further connector (22, 17) and the auxiliary winding (5).

Abstract: Motor start circuit for an induction motor, particularly a single-phase AC induction motor, with a main winding (4) and an auxiliary winding (5), which are supplied with current, particularly alternating current, via current supply connections (24, 25), and with a start switching device (15) serving the purpose of interrupting the current flow through the auxiliary winding (5) after the start of the motor, the start switching device (15) being connected to a control device (20) via a connector (18), the control device (20) being connected between the current supply connections (24, 25), and with a winding protection switch (28), which is normally closed and which opens on the occurrence of a fault. The invention is characterised in that the control device (20) is connected to the winding protection switch (28) via at least one further connector (22, 17), preferably via at least one further connector (22, 17) and the auxiliary winding (5).

Abstract: The invention concerns a hydraulic axial piston machine (1) with a cylinder body (3), at least one piston (9) to be axially displaceable in the cylinder body (3), said piston (9) resting on a swash plate (13) by way of a slide shoe (11), with a pressure plate (14) loading the slide shoe (11) in the direction of the swash plate (13), and a hold-down part (16), which bears with a contact surface (18) on a counter surface (20) of the pressure plate(14) facing away from the swash plate (13). It is endeavored to operate the machine with as little wear as possible. For this purpose, it is ensured that the contact surface (18) is formed by a circumferential surface section of a cone, whose peak (19) is directed towards the swash plate (13).

Abstract: The invention concerns a hydraulic axial piston machine (1) with a cylinder body (3), at least one piston (9) to be axially displaceable in the cylinder body (3), said piston (9) resting on a swash plate (13) by way of a slide shoe (11), with a pressure plate (14) loading the slide shoe (11) in the direction of the swash plate (13), and a hold-down part (16), which bears with a contact surface (18) on a counter surface (20) of the pressure plate(14) facing away from the swash plate (13). It is endeavoured to operate the machine with as little wear as possible. For this purpose, it is ensured that the contact surface (18) is formed by a circumferential surface section of a cone, whose peak (19) is directed towards the swash plate (13).

Abstract: The invention concerns a water-hydraulic machine with at least two mutually movable parts, of which one has a surface of a plastic material with friction-reducing properties. In such a machine it is desired to enable the use of demineralised water. For this purpose, it is ensured that a layer of a carbon-containing material is arranged between the plastics material and the other part.

Abstract: The invention concerns a water-hydraulic machine with at least two mutually movable parts, of which one has a surface of a plastic material with friction-reducing properties. In such a machine it is desired to enable the use of demineralised water. For this purpose, it is ensured that a layer of a carbon-containing material is arranged between the plastics material and the other part.

Abstract: Hydraulic vane machine with a rotor having several radially movable vanes, and with a stator having a stator bore, in which the rotor is arranged rotatably, and whose internal wall is made as a guiding contour on which the vanes bear, and with a sideplate arrangement on each axial front side of rotor and stator, which define the vane cells together with the rotor, the vanes and the stator. In such a machine an improvement of the operation behaviour is desired. For this purpose, the sideplate arrangements are fixed on the rotor and rotate together with the rotor in relation to the stator.

Abstract: Hydraulic vane machine with a stator having a stator bore with a guiding contour, a rotor arranged in the stator bore and having substantially radially movable vanes bearing on the guiding contour, and a shaft connected fixedly rotatable with the rotor via a coupling. In such a machine the operation behaviour must be improved. For this purpose the coupling has a transmission element located horizontally with the shaft being vertical. The transmission element is radially displaceable relative to the shaft in one direction and is laterally displaceable relative to the rotor in a second direction.