阅读说明：本技术 能枢转的传动装置 (Pivotable transmission ) 是由 巴尔特·卡埃尔斯 于 2018-06-04 设计创作，主要内容包括：本发明涉及一种传动装置(101),其具有能转动的结构(119)、第一轴(103)和第二轴(105)；其中,第一轴(103)和第二轴(105)分别是传动装置(101)的输入轴或输出轴。第一轴(103)和第二轴(105)以能转动的方式支承在能转动的结构(119)中；其中,第一轴(103)的转动轴线与能转动的结构(119)的转动轴线相同；并且其中第二轴(105)的转动轴线与能转动的结构(119)的转动轴线间隔开。(The invention relates to a transmission (101) having a rotatable structure (119), a first shaft (103) and a second shaft (105); wherein the first shaft (103) and the second shaft (105) are an input shaft or an output shaft, respectively, of the transmission (101). The first shaft (103) and the second shaft (105) are rotatably supported in a rotatable structure (119); wherein the axis of rotation of the first shaft (103) is the same as the axis of rotation of the rotatable structure (119); and wherein the axis of rotation of the second shaft (105) is spaced from the axis of rotation of the rotatable structure (119).)

1. A transmission (101) comprising a rotatable structure (119), a first shaft (103) and a second shaft (105); wherein the content of the first and second substances,

the first shaft (103) and the second shaft (105) are respectively an input shaft or an output shaft of the transmission (101); it is characterized in that the preparation method is characterized in that,

the first shaft (103) and the second shaft (105) are rotatably supported in the rotatable structure (119); wherein the content of the first and second substances,

-the axis of rotation of the first shaft (103) is the same as the axis of rotation of the rotatable structure (119); and wherein the one or more of the one,

the axis of rotation of the second shaft (105) and the axis of rotation of the rotatable structure (119) are spaced apart from each other.

2. The transmission of claim 1; it is characterized in that it has

A first gear (109) and a second gear (111); wherein the content of the first and second substances,

the first gear (109) and the second gear (111) are meshed with each other; wherein the content of the first and second substances,

the first gear (109) is connected in a rotationally fixed manner to the first shaft (103); and wherein the one or more of the one,

the second gear (111) is connected in a rotationally fixed manner to the second shaft (105).

3. -a transmission (101) according to any of the previous claims; it is characterized in that it has

A third shaft (107); wherein the content of the first and second substances,

the third shaft (107) is an input or output shaft of the transmission (101); wherein the content of the first and second substances,

the third shaft (107) is rotatably supported in the rotatable structure (119); and wherein the one or more of the one,

the axis of rotation of the third shaft (107) and the axis of rotation of the rotatable structure (119) are spaced apart from each other.

4. -a transmission (101) according to claim 3 and as dependent on claim 2; it is characterized in that it has

A third gear (113); wherein the content of the first and second substances,

the third gear (113) is in mesh with the first gear (109) or the second gear (111); and wherein the one or more of the one,

the third gear (113) is connected in a rotationally fixed manner to the third shaft (107).

5. -a transmission (101) according to any of the previous claims; it is characterized in that it has

A housing (115) having a first portion (119) and a second portion (117); wherein the content of the first and second substances,

the first part (119) is rotatably supported in the second part (117); wherein the content of the first and second substances,

the first portion (119) forms the rotatable structure.

6. A system for testing a first transmission device to be tested; it is characterized in that it has

-a first transmission (111) according to any one of the preceding claims; wherein the content of the first and second substances,

the input shaft or the output shaft of the first transmission device test part can be connected in a rotationally fixed manner to the second shaft (105) and/or the third shaft (107) of the first transmission device (101).

7. The system according to the preceding claim; it is characterized in that it has

A driving member (205) provided with a driving shaft (207) and/or a driven member provided with a driven shaft; wherein the content of the first and second substances,

the drive shaft (207) or the output shaft is connected in a rotationally fixed manner to a first shaft (103) of the first transmission (101).

8. The system of claim 6 or 7; it is characterized in that it has

At least one horizontally movable platform (203); wherein the content of the first and second substances,

the first transmission (101) and/or the drive element (205) and/or the driven element are fixed at the platform (203).

9. The system of any one of claims 6 to 8; it is characterized in that the preparation method is characterized in that,

the input shaft of the piece to be tested of the first transmission device and the input shaft of the piece to be tested of the second transmission device can be connected with each other in a relative rotation resisting mode; wherein the content of the first and second substances,

the first transmission device to-be-tested piece and the second transmission device to-be-tested piece are identical in structure.

10. The system according to the preceding claim; it is characterized in that it has

A second transmission according to any one of claims 1 to 5; wherein the content of the first and second substances,

the output shaft of the to-be-detected piece of the second transmission device can be connected with the second shaft and/or the third shaft of the second transmission device in a relative rotation resisting mode; wherein the content of the first and second substances,

the drive shaft (207) of the drive element (205) is connected in a rotationally fixed manner to the first shaft (103) of the first transmission (101); and wherein the one or more of the one,

the output shaft of the driven element is connected in a rotationally fixed manner to the first shaft of the second transmission.

Technical Field

The present invention relates to a transmission according to the preamble of claim 1.

Background

So-called back-to-back test stands for wind power installations are known from the prior art. In the back-to-back test stand, two test parts are arranged opposite one another and are coupled with their input shafts in a rotationally fixed manner (drehfest). The motor drives an output shaft of a member to be measured. And connecting the output shaft of the other piece to be tested with a generator.

The structural form and dimensional specifications of the piece to be tested may vary. It is therefore desirable to design the motor and generator to move both vertically and horizontally. For this purpose, expensive platforms are used on which the motor and the generator are mounted. These platforms represent a significant share of the production costs of such test stations.

Disclosure of Invention

The object of the present invention is to overcome the disadvantages inherent in the solutions known from the prior art. In particular, an inexpensive test bench for wind power transmissions should be provided.

This object is achieved by a transmission according to claim 1 and a system according to claim 6.

The transmission includes a rotatable structure, a first shaft and a second shaft. The structure can preferably be rotated through any desired angle about exactly one axis of rotation, and if necessary also about a plurality of axes of rotation. The angle may in particular be at least 360 °.

The first shaft is kinematically coupled with the second shaft. Preferably, these axes are coupled necessarily, that is to say with 1 transmission degree of freedom (getriebleheitsgrad). The term transmission degree of freedom, also known as transmission operation (getriebleafgrad), is generally defined in the "Dubbel mechanical engineering manual" (k. — h.grote, j.feldhuen, "Dubbel", 2007 22 nd edition).

The first shaft and the second shaft are an input shaft or an output shaft, respectively. Thus, either the first shaft is the input shaft and the second shaft is the output shaft, or the first shaft is the output shaft and the second shaft is the input shaft.

The input shaft and the output shaft are characterized in that they project from the housing of the transmission and are accessible from the outside, so that they can be connected in a rotationally fixed manner to a further shaft or to a rotatable component. The input shaft is used to introduce torque into the transmission. Accordingly, the output shaft serves to transfer the torque out of the transmission. In this way, a torque flow extending from the input shaft to the output shaft may be generated.

According to the invention, the first shaft and the second shaft are rotatably supported in a rotatable structure. In particular, the first and second shafts are rotatable relative to the rotatable structure.

The axis of rotation of the first shaft is the same as the axis of rotation of the rotatable structure. The rotation of the first shaft and the rotation of the rotatable structure thus take place about a common axis of rotation. Thus, the positioning of the first shaft remains unchanged when the rotatable structure is rotated.

While the second shaft is eccentrically arranged with respect to the rotatable structure. While the axis of rotation of the second shaft and the axis of rotation of the rotatable structure are thus spaced apart from each other. This means that the axis of rotation of the second shaft does not intersect the axis of rotation of the rotatable structure. In particular, the axis of rotation of the second shaft differs from the axis of rotation of the rotatable structure. Preferably, the two axes of rotation are parallel to each other.

The eccentric arrangement of the second shaft results in a movement of the axis of rotation of the second shaft when the rotatable structure rotates on a circular path about its axis of rotation. The positioning of the second shaft can thus be changed by rotation of the rotatable structure. In case the transmission according to the invention is used in a test bench, the above-mentioned platform is therefore not needed. The corresponding test stations will be further explained below.

In a preferred refinement, the transmission has a first gear and a second gear which mesh with one another. The first gear is connected in a rotationally fixed manner to the first shaft and the second gear is connected in a rotationally fixed manner to the second shaft. By changing the size of the first gear and the second gear, not only the transmission ratio can be changed, but also the range of movement of the second shaft can be changed.

In addition, the transmission may be modified to have a third shaft. The third shaft is also the input or output shaft. The third axis is of the same type as the second axis. If the second shaft is an input shaft, the third shaft is also configured as an input shaft. Conversely, if the second shaft is the output shaft, the third shaft is configured as the output shaft.

Just like the second shaft, the third shaft is also rotatably supported in the rotatable structure and is arranged eccentrically with respect to the rotatable structure. The axis of rotation of the third shaft is thus spaced apart from the axis of rotation of the rotatable structure. Preferably, the axis of rotation of the third shaft is also parallel to the axis of rotation of the rotatable structure. Through the third shaft, the configuration feasible scheme of the test bench with the built transmission device is increased.

In a preferred refinement, the third shaft is integrated into the transmission via a third gear wheel, which is connected in a rotationally fixed manner to the third shaft. The third gear is meshed with the first gear or the second gear.

In a further preferred development, the first part of the housing of the gear unit forms a rotatable structure. The first part is rotatably supported in the second part of the housing.

The housing of the transmission, commonly referred to as the casing, encloses the remaining components of the transmission. The components of the transmission that differ from the housing are located at least partially in the transmission interior. In general, the shafts of the gear are also mounted in a housing.

The transmission according to the invention and its preferred further development are suitable for use in a transmission test stand. A corresponding system for testing a transmission (a first transmission test object) includes a first transmission. The first transmission is a transmission according to the invention or a preferred development. The input shaft or the output shaft of the component to be tested of the first transmission can be connected in a rotationally fixed manner to the second shaft (if a third shaft) of the first transmission.

Preferably, the system is improved by a driving member having a driving shaft and/or a driven member having a driven shaft. The drive shaft or the output shaft is connected in a rotationally fixed manner to a first shaft of the first transmission. By rotating the rotatable structure, the positioning of the second shaft and, if appropriate, of the third shaft can now be adapted to the structural conditions of the first transmission device test object, so that the input shaft or the output shaft of the first transmission device test object can be connected in a rotationally fixed manner to the second shaft of the first transmission device or, if appropriate, to the third shaft.

In a preferred development, the system comprises at least one horizontally movable platform. The platform can be translationally displaced or moved in the horizontal direction. The first transmission and/or the drive and/or the driven element are fixed at the platform, preferably above the platform. Thus, the first transmission and/or the driving member and/or the driven member can also move horizontally with the platform. In this way, the horizontal positioning region of the second shaft can be optimized.

The area that can be covered by the rotation of the rotatable structure is sufficient for the vertical positioning of the second shaft. Vertical movability of the platform can thus be eliminated. This saves costs compared to test stands known in the prior art.

The system is preferably modified to a back-to-back test station for receiving the second transmission dut. The first transmission device to-be-tested piece and the second transmission device to-be-tested piece are identical in structure. Thus, they are structurally identical transmissions.

Two components are identical when they match within manufacturing tolerances in terms of their physical parameters, in particular with regard to their material and geometric properties.

The input shaft of the first transmission device to be tested and the input shaft of the second transmission device to be tested are connected with each other in a rotation-resistant manner. According to a further development, it is provided that the output shaft of the test part of the first transmission is connected in a rotationally fixed manner to the second or third shaft (if applicable) of the first transmission. For this purpose, the positioning of the second or, if appropriate, third shaft of the first gear is adjusted by twisting the rotatable structure of the first gear and, if appropriate, moving the platform.

In a preferred development, the second component to be tested of the transmission is also connected to the test stand by means of the transmission according to the invention. A corresponding system includes a second transmission having features of the present invention. Preferably, the first transmission is identical in construction to the second transmission. According to a further development, a drive shaft of the drive element is connected in a rotationally fixed manner to the first shaft of the first transmission. The output shaft of the output element is connected in a rotationally fixed manner to the first shaft of the second transmission.

Drawings

The drawings contain preferred embodiments of the invention. Corresponding reference numerals indicate identical or functionally identical features. Wherein in detail:

FIG. 1 shows a transmission;

FIG. 2 shows a drive of the test station;

FIG. 3 illustrates the range of motion of the output shaft of the transmission; and

fig. 4 shows a positioning mechanism.

Detailed Description

According to fig. 1, the transmission 101 has a first shaft 103, a second shaft 105 and a third shaft 107. There are also three gears, a first gear 109, a second gear 111 and a third gear 113. The first gear 109 is fixed in a rotationally fixed manner on the first shaft 103, the second gear 111 is fixed in a rotationally fixed manner on the second shaft 105, and the third gear 113 is fixed in a rotationally fixed manner on the third shaft 107. The second gear 111 meshes with both the first gear 109 and the third gear 113.

The housing 115 of the transmission 101 is constructed in multiple parts. It comprises a body 117 and a rotatable portion 119. The first shaft 103, the second shaft 105 and the third shaft 107 are rotatably supported in a rotatable portion 119. For this purpose, the roller bearing 121 is inserted into the rotatable part 119.

The rotatable part 119 of the housing 115 is in turn rotatably supported in the fuselage 117 by means of two rolling bearings 123. The rotatable portion 119 is arranged concentrically with the first shaft 103 so that their axes of rotation correspond. While the axis of rotation of the second shaft 105 and the axis of rotation of the third shaft 107 each extend at a distance from the axis of rotation of the first shaft 103. This results in the second shaft 105 or the third shaft 107 moving when the rotatable part 119 of the housing 115 rotates on a circular path around the first shaft 103 or its axis of rotation.

The rotatable portion 119 of the housing 115 has two disc-shaped side portions 125. The side portions 125 are interconnected by axially extending cross braces 127. A rolling bearing 121 for supporting the shafts 103, 105, 107 is placed in the side portion 125.

Two ring gears 129 are screwed to the body 117 of the housing 115. A pinion (not shown in fig. 1) is embedded in each ring gear 129. These pinions are driven by a motor mounted in the rotatable portion 119 of the housing 115. In this way, the rotation-enabling portion 119 can rotate.

Fig. 2 shows a part of a test bench 201 comprising the transmission 101 shown in fig. 1. The body 117 of the housing 115 of the transmission 101 is secured to the platform 203. A motor 205 is also secured to the platform 203. The output shaft 207 of the motor 205 is connected in a rotationally fixed manner to the first shaft 103 of the transmission 101.

The test bench 201 has a mechanism that enables the platform 203 to move in two axes in the horizontal direction.

Instead of the motor 205, the system shown in fig. 2 can have a generator, the input shaft of which is connected in a rotationally fixed manner to the first shaft 103 of the transmission 101. In a back-to-back test bench the system according to fig. 2 and the system with the generator are positioned opposite each other.

Fig. 3 shows the positioning area 301 of one of the two eccentrically arranged shafts 105, 107. The positioning area 301 is covered by superimposing the horizontal movement of the platform 203 and the rotation of the rotatable part 119.

Fig. 4 shows a mechanism for enabling the rotation of the rotatable portion 119. The mechanism has two worms 401 which are embedded in a worm wheel 403 and thus form a worm gear. The worm gear 403 is connected to the rotatable part 119 of the housing 115 in a rotationally fixed manner. The central axis of the worm wheel 403 corresponds to the axis of rotation of the rotatable part 119. At this time, the worm wheel 403 and the rotatable portion 119 are twisted about the rotational axis by the rotation of the worm 401.

List of reference numerals

101 transmission device

103 first axis

105 second axis

107 third axis

109 first gear

111 second gear

113 third gear

115 casing

117 fuselage

119 rotatable part

121 roller bearing

123 rolling bearing

125 side part

127 horizontal support

201 test bench

203 platform

205 motor

207 drive shaft 103

301 location area

401 worm

403 worm wheel