Voith GmbH | Date: 2017-03-29
The invention relates to a spur gear transmission with at least two toothed spur gears (1, 2), the toothings of which mesh with each other and each of which can be rotated about a rotational axis (3, 4), comprising: - an enveloping wall (5) which surrounds the two spur gears in the circumferential direction and in the direction of the rotational axes; wherein - the enveloping wall has an inner contour which is adapted to the outer diameters of the spur gears such that two annular gaps (6, 7) which transition into each other are produced between the enveloping wall and the spur gears, each annular gap being arranged at least substantially concentrically to a rotational axis; - the enveloping wall surrounds the two spur gears in the circumferential direction only over a part of the circumference of the spur gears such that a part of the outer circumference of the two spur gears or at least one of the two spur gears protrudes outwards out of the enveloping wall. The spur gear transmission according to the invention is characterized in that the part of the two spur gears or of the one spur gear, said part protruding out of the enveloping wall, is positioned on the lower face of the spur gears.
Voith GmbH | Date: 2017-03-08
A device for filling and pressurisation of fluid in an enclosed space (2) at a predetermined pressure, comprising a pump connection seat (3) arranged in fluid communication with the enclosed space and adapted to receive a nozzle of a fluid pump therein; a unidirectional check valve (4) arranged between the pump connection seat and the enclosed space and configured to allow flow of fluid from the pump connection seat to the enclosed space; and a pressure-limiting valve (5) arranged in fluid communication with the pump connection seat and configured to open at the predetermined pressure, whereby the check valve immediately closes to enclose the fluid in the enclosed space at the predetermined pressure.
Voith GmbH | Date: 2017-01-18
The invention relates to a shaft-hub connection, specifically having the features from the preamble of Claim 1. The invention also relates to a pivot receiver for use in a shaft-hub connection and a drive arrangement having a shaft-hub connection formed according to the invention. The invention is characterized in that a readjustment device provided between the pivot receiver and the shaft comprises at least one readjustment element having at least one surface which interacts with one of the connection components - pivot receiver and/or shaft - and which is embodied as a wedge surface, wherein the orientation is characterized perpendicular or at an angle to a plane which can be described by the longitudinal axis of the pivot receiver and perpendicular thereto.
Voith GmbH | Date: 2017-05-17
The invention relates to a machine (1) for the production of a fiber web (2), in particular a tissue or hygienic paper web or a fiber web (2) which is smooth on one side, having at least one pressure nip (10) which is formed between a shoe press unit (5), comprising a press shoe (6), and a drying cylinder (7), through which pressure nip (10) a water-absorbing carrier belt (11), a water-impermeable press belt (12) and the fiber web (2) are guided, wherein the dying cylinder (7) comprises a cylindrical part (8) and in each case one end cover (9) on the end side. The machine (1) according to the invention is characterized in that the cylindrical part (8) of the drying cylinder (7) consists at least partially of steel.
Voith GmbH | Date: 2017-03-15
The invention relates to an industrial textile for use in a fibrous web forming and/or processing machine, having a web contacting side and a machine contacting side and having at its two longitudinal ends a transversal edge section which can be joined together to make the textile endless, the textile comprises a fabric made from MD-yarns interwoven with CD-yarns, the MD-yarns are arranged in groups of at least two adjacent MD-yarns (MD-yarn group), the MD-yarns of each MD-yarn group weaving side-by-side the same weave path with the CD-yarns, each of the MD-yarn groups comprises a first MD-yarn and a second MD- yarn being arranged such that the first and second MD-yarn are adjacent to each other, the first MD-yarn of a MD-yarn group is non-adjacent to the first MD-yarn of an adjacent MD-yarn group and the second MD-yarn of said MD-yarn group is non-adjacent to the second MD- yarn of said adjacent MD-yarn group. The invention is characterized in that at each transversal edge section the first MD-yarn of a first MD-yarn group forms a first loop and weaves back into the weave path of the first MD-yarn of a second MD-yarn group, the second MD-yarn group being adjacent to the first MD-yarn group.
Voith GmbH | Date: 2017-04-12
Device (1) for producing a fibrous web (FB), having: a first forming unit (10) with an endlessly circulating first fabric belt (12) and a first headbox (17) which is set up to apply suspended fibrous material for forming a first layer (L1) of the fibrous web onto the first fabric belt, and a second forming unit (25) with a second fabric belt (27) which is set up for endless circulation and a second headbox (32) which is set up to apply suspended fibrous material for forming a second layer (L2) of the fibrous web onto the second fabric belt, wherein the second forming unit is arranged above the first forming unit, with the result that the second fabric belt is guided along on the first fabric belt, in order to couch the second layer onto the first layer of the fibrous web at a couching point (30), and the first and the second forming unit are set up for forming the layers in such a way that one of the layers forms at least two plies and the other forms at least one ply of the fibrous web. According to the invention, at least one of the headboxes is configured as a multilayer headbox, with the result that at least two fibrous stock suspension plies which lie on one another can therefore be discharged at the same time for application on the fabric belt side in order to from an at least two-ply layer.
Voith GmbH | Date: 2017-07-19
The invention relates to a clothing that is suitable for a machine for producing and/or finishing a material web, particularly a fibrous material web such as a paper, board or tissue web, comprising at least one polymer film having an upper and a lower side, the lower side of a first section of one of said at least one polymer films, and the upper side of a second section of the same film or of another of said at least one polymer films, being arranged one over the other, in surface contact, in an overlap region and being interconnected in at least some sections, perforations that are delimited by walls being formed in said overlap region and penetrating the two superposed sections from the upper side of the first section to the lower side of the second section. The invention is characterised in that, at least at the walls which delimit said perforations, these sections are interconnected by means of a welded connection. The invention also relates to a method for producing such a clothing.
Siemens AG and Voith GmbH | Date: 2017-08-09
Disclosed is a cooling device for cooling a rotor 1, which is rotatably mounted about an axis of rotation 2, of an electric machine, wherein the rotor 1 is supported by a central rotor shaft 3 and comprises a hollow space 5 in the interior of the rotor shaft 3 for receiving coolant 6. The cooling device has at least one first coolant line 7a that extends radially outwardly from the hollow space 5 and a ring-shaped first distribution line 11a that is fluidically connected to the hollow space via the first coolant line 7a. Also disclosed are a rotor of an electric machine comprising such a cooling device and such an electric machine.
Voith GmbH | Date: 2017-08-02
The invention relates to an exhaust gas after-treatment system for reducing nitrogen oxide by means of SCR for a vehicle with an internal combustion engine comprising at least two exhaust gas pipes (21), which respectively contain an SCR-catalyst (24) and upstream therefrom respectively an additive injection chamber (22), and an additive tank (1) which supplies said injection chambers (22). On each of said exhaust gas pipes (21) an associated additive injection dosing unit (11) and an associated additive injection supply unit (10) are provided, said supply units (10) are respectively connected to the additive tank (1) by means of a forward line (2 +2.1, 2+2.2) and the respective forward line (2+2.1, 2+2.2) have essentially the same line lengths to the supply units (10).
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: LCE-07-2016-2017 | Award Amount: 7.17M | Year: 2016
FIThydro addresses the decision support in commissioning and operating hydropower plants (HPP) by use of existing and innovative technologies. It concentrates on mitigation measures and strategies to develop cost-efficient environmental solutions and on strategies to avoid individual fish damage and enhancing population developments. Therefore HPPS all over Europe are involved as test sites. The facilities for upstream and downstream migration are evaluated, different bypass systems including their use as habitats and the influence of sediment on habitat. In addition existing tools and devices will be enhanced during the project and will be used in the experimental set-ups in the laboratories and at the test sites for e.g. detection of fish or prediction of behavior. This includes sensor fish, different solutions for migration as e.g. trash rack variations, different fish tracking systems, but also numerical models as habitat and population model or virtual fish swimming path model. Therefore a three-level-based workplan was created with preparatory desk work at the beginning to analyze shortcomings and potential in environment-friendly hydropower. Following the experimental tests will be conducted at the different test sites to demonstrate and evaluate the effects of the different options not covered by the desk-work. Thirdly, these results are fed into a risk based Decision Support System (DSS) which is developed for planning, commissioning and operating of HPPs. It is meant to enable operators to fulfill the requirements of cost-effective production and at the same time meet the environmental obligations and targets under European legislation and achieve a self-sustained fish population.