Joint shaft, in particular universal joint shaft
A cross cardan shaft and cardan shaft technology, applied in the field of cardan shafts, can solve problems such as wear and damage to teeth
Active Publication Date: 2017-08-01
VOITH PATENT GMBH
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Problems solved by technology
Too short axial support areas between the toothings inevitably lead to high forces or surface pressures, which lead to premature wear or damage to the toothings or the shaft elements carrying the toothings
Method used
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[0035] exist figure 1 The cardan shaft with a first axial coupling end 1 and a second axial coupling end is seen in the figure, which are each articulated to the middle part 4 via a swivel joint 3 (here an Oldham joint), however present Torsionally rigidly connected. Each swivel joint 3 has a universal joint crosshead and correspondingly two universal joint forks that receive the universal joint crosshead. However, the swivel joint 3 can also be designed differently, or the swivel joint can be reduced.
[0036] The central part 4 has a length compensation on the longitudinal axis 5 of the cardan shaft, wherein the longitudinal axis 5 is identical to the axis of rotation. To this end, the middle part 4 comprises a tubular first shaft element 6 and a rod-shaped second shaft element 7 . Furthermore, an intermediate sleeve 8 is arranged between the first shaft element 6 and the second shaft element 7, which surrounds the second shaft element 7 on the periphery over part of its ...
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The invention relates to a joint shaft, in particular a universal joint shaft, comprising a first axial connection end, a second axial connection end, and a central part which connects the first connection end to the second connection end in a rotationally fixed and articulated manner via at least one rotary joint or at least one rotary joint for each connection end. The central part is provided with a unit for a length compensation over a longitudinal axis of the joint shaft, comprising a first tubular shaft element that has at least one inner toothing with inner teeth, which extend in the direction of the longitudinal axis and are distributed over the circumference, and is connected to the first connection end and a second tubular or rod-shaped shaft element that has at least one outer toothing with outer teeth, which extend in the direction of the longitudinal axis and are distributed over the circumference, and is connected to the second connection end. The joint shaft according to the invention is characterized in that at least one intermediate sleeve is provided between the first shaft element and the second shaft element, wherein the intermediate sleeve has at least one intermediate sleeve inner toothing with inner teeth, which extend in the direction of the longitudinal axis and are distributed over the circumference, and at least one intermediate sleeve outer toothing with outer teeth, which extend in the direction of the longitudinal axis and are distributed over the circumference, and the intermediate sleeve can be moved in the direction of the longitudinal axis relative to the first shaft element and the second shaft element and is directly or indirectly connected to the first shaft element in a rotationally fixed manner via the intermediate sleeve outer toothing and to the second shaft element in a rotationally fixed manner via the intermediate sleeve inner toothing.
Description
technical field [0001] The invention relates to a cardan shaft, in particular a cross cardan shaft for applications in which the cardan shaft is used with a relatively short axial length in a first operating state for the transmission of torque or drive power, and in which In the second operating state, it is used with a relatively large axial length in order to transmit torque or drive power. This means that the cardan shaft must be able to transmit a predetermined torque (rated torque) both with a short axial length and with a long axial length , especially for the same torque. Background technique [0002] Cardan shafts designed for the aforementioned purposes have an axial length compensation, which is also referred to as telescopic function. These cardan shafts are used, for example according to the purpose of the invention, in rolling mills for driving work rolls by means of a drive machine. Known cardan shafts with length compensators have a central part between th...
Claims
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IPC IPC(8): F16D1/108F16D3/06F16D3/26F16C3/03
CPCF16C3/03F16D1/108F16D3/06F16D3/26F16D3/40Y10T403/32475Y10T403/32491
Inventor 彼得·格拉温霍夫埃里希·哈卢克罗格·克莱门特
Owner VOITH PATENT GMBH