ADJUSTABLE TEST OBJECT HOLDER FOR A DRIVE TRAIN, TEST BENCH, AND DRIVE TRAIN TEST BENCH

Abstract

The invention relates to an adjustable test object holder (1) for a drive-train test bench (100), wherein the test object holder (1) comprises a first surface (5) and a second surface (3) parallel to the first surface (5), wherein the test object holder (1) can be arranged on a subsurface via the first surface (5), wherein a test object can be arranged on the second surface (3), and wherein the test object holder (1) is designed in such manner that relative to the first surface (2) the second surface (3) can be displaced along a longitudinal axis (X), a vertical axis (Z) and a transverse axis (Y). The test object holder (1) according to the invention is further designed in such manner that relative to the first surface (5) the second surface (3) can be tilted at least about the vertical axis (Z) and the transverse axis (Y). The invention also relates to a corresponding drive-train test bench (100).

Claims

1. An adjustable test object holder (1) for a drive-train test bench (100), the test object holder (1) comprising a first surface (5) and a second surface (3) parallel to the first surface (5), wherein the test object holder (1) is configured to be arranged on a subsurface via the first surface (5), wherein a test object is configured to be arranged on the second surface (3), wherein the test object holder (1) is configured so that relative to the first surface (2) the second surface (3) can be displaced along a longitudinal axis (X), a vertical axis (Z), and a transverse axis (Y), and wherein the test object holder (1) is further configured so that relative to the first surface (2) the second surface (3) can be tilted at least about the vertical axis (Z) and the transverse axis (Y).

2. The test object holder (1) according to claim 1, wherein relative to the first surface (5) the second surface (3) can be displaced along the vertical axis (Z) by means of at least two displaceable wedges (6, 6).

3. The test object holder (1) according to claim 2, wherein the at least two displaceable wedges (6, 6) are fixedly arranged on one of the first surface (5) or the second surface (3), the at least two displaceable wedges are configured to be displaced on another of the first surface (5) or the second surface (3) along an inclined surface provided for the purpose, so that a displacement of the at least two wedges (6, 6) simultaneously results in an adjustment of the first surface (5) along the vertical axis (Z) and along the transverse axis (Y) or the longitudinal axis (X).

4. The test object holder (1) according to claim 2, wherein the at least two displaceable wedges (6, 6) are arranged on a first intermediate plate (4), the said first intermediate plate (4) having an inclined surface on an upper side, which corresponds in an opposite direction to an inclined surface of the at least two displaceable wedges (6, 6), wherein an underside of the first intermediate plate (4) is parallel with a long side-edge of each of the at least two displaceable wedges (6, 6).

5. The test object holder (1) according to claim 2, wherein each of the at least two displaceable wedges (6, 6) has a convexity (14) on a side-edge facing toward the second surface (3) that extends over the side-edge.

6. The test object holder (1) according to claim 2, wherein a position of the at least two wedges (6, 6) can be determined by means of at least one depth caliper.

7. The test object holder (1) according to claim 1, wherein relative to the first surface (5) the second surface (3) is configured to be adjusted along the longitudinal axis (X) by means of a longitudinal spindle drive (9), and is configured to be adjusted along the transverse axis (Y) by means of a transverse spindle drive (10).

8. The test object holder (1) according to claim 2, wherein relative to the first surface (5) the second surface (3) is configured to be tilted about the transverse axis (Y) by means of at least one wedge (6, 6) of the at least two displaceable wedges (6, 6).

9. The test object holder (1) according to claim 2, wherein relative to the first surface (1) the second surface (3) is configured to be tilted around a bearing point (8) about the vertical axis (Z) by means of a tilting spindle drive (7).

10. The test object holder (1) according to claim 9, wherein the bearing point is in the form of a rotation bearing between the first surface (5) and a second intermediate plate (2), or between the second surface (3) and the second intermediate plate (2).

11. The test object holder (1) according to claim 9, wherein the bearing point (8) is located in an outer quarter of a length of the test object holder (1).

12. The test object holder (1) according to claim 1, wherein an orientation of the second surface (3) set relative to the first surface (5) can be fixed by means of clamping screws.

13. The test object holder (1) according to claim 1, further comprising a base (12) onto which the first surface (5) is fixed so that the first surface cannot be displaced and cannot tilt.

14. A drive-train test bench (100) for testing an electric vehicle drive system, comprising a test object holder (1) according to claim 1.

15. An adjustable test object holder (1) for a drive-train test bench (100), the test object holder (1) comprising: a first surface (5) and a second surface (3) parallel to the first surface (5) in at least some positions of the test object holder; wherein the test object holder (1) is configured to be arranged on a subsurface via the first surface (5), wherein a test object is configured to be arranged on the second surface (3); wherein the test object holder (1) is configured so that relative to the first surface (2) the second surface (3) can be displaced along a longitudinal axis (X), a vertical axis (Z), and a transverse axis (Y); wherein the test object holder (1) is further configured so that relative to the first surface (2) the second surface (3) can be tilted at least about the vertical axis (Z) and the transverse axis (Y); and wherein each of the at least two displaceable wedges (6, 6) has a convexity (14) on a side-edge facing toward the second surface (3) that extends over the side-edge.

16. The test object holder (1) according to claim 15, wherein an orientation of the second surface (3) set relative to the first surface (5) can be fixed by means of clamping screws.

17. The test object holder (1) according to claim 16, wherein relative to the first surface (1) the second surface (3) is configured to be tilted around a rotation bearing about the vertical axis (Z) by means of a tilting spindle drive (7), the rotation bearing between a second intermediate plate (2) and either the first surface (5) or the second surface (3).

18. The test object holder (1) according to claim 17, wherein relative to the first surface (5) the second surface (3) is configured to be adjusted along the longitudinal axis (X) by means of a longitudinal spindle drive (9), and is configured to be adjusted along the transverse axis (Y) by means of a transverse spindle drive (10).

19. The test object holder (1) according to claim 18, wherein relative to the first surface (5) the second surface (3) is configured to be tilted about the transverse axis (Y) by means of at least one wedge (6, 6) of the at least two displaceable wedges (6, 6).

20. The test object holder (1) according to claim 19, further comprising a base (12), wherein the first surface (5) is fixedly secured to the base.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Below, examples of the invention are explained with reference to the embodiments illustrated in the figures.

[0034] The figures show:

[0035] FIG. 1: A possible embodiment of a drive-train test bench according to the invention, illustrated schematically as an example,

[0036] FIGS. 2a-2d: A possible embodiment of a test object holder according to the invention, illustrated schematically as an example,

[0037] FIG. 3: Another possible embodiment of a test object holder according to the invention, illustrated schematically as an example, and

[0038] FIG. 4: Shown schematically and as an example, the cross-section of a possible embodiment of a convexity formed on one of the two side-edges of a wedge facing toward the second surface 3.

[0039] In all the figures, the same objects, functional units and comparable components are denoted by the same indexes. As regards their technical characteristics these objects, functional units and comparable components are made identically unless stated explicitly or implied by the description.

DETAILED DESCRIPTION

[0040] FIG. 1 shows, schematically and as an example, a possible embodiment of a drive-train test bench 100 according to the invention. According to this example, the drive-train test bench 100 comprises a drive module 50 and a test object holder 1 according to the invention. The drive module 50 in this case contains an electric motor (not shown in FIG. 1), which can drive a test object (also not shown in FIG. 1) by way of a flange 51. The test object holder 1 and the drive unit 50 are connected to one another by a common base 10, whereby a particularly rigid and vibration-damping connection is obtained. In this example the base 10 consists of a mineral casting. In addition, the test object holder 1 comprises a first surface 5 and a second surface 3, each made of steel and being arranged one above the other. The first surface 5 is an underside of the test object holder 1 and is arranged on the base 10 in such manner that it cannot be displaced or tilted. By virtue of a number of slots and openings in the second surface 3, a plurality of holding means (not shown) can be arranged in order to hold the test object in position on the second surface 3. The test object holder 1 is designed such that relative to the first surface 5, the second surface 3 can not only be displaced along a longitudinal axis X, a vertical axis Z, and a transverse axis Y, but also tilted relative to the first surface 5 about the vertical axis and the transverse axis. In FIG. 1 the various axes and rotation directions are indicated by the arrows X, Y, Z, B, and C, wherein B shows a rotation about the transverse axis Y and C shows a rotation about the vertical axis Z.

[0041] FIGS. 2a-2d show, schematically and as examples, a possible embodiment of a test object holder 1 according to the invention. FIG. 2a shows a fully assembled test object holder, which comprises a first surface 5, a second surface 3, a first intermediate plate 4, a second intermediate plate 2 and two wedges 6 and 6, wherein in FIG. 2a the wedges 6 and 6 are covered by the second surface 3. FIG. 2b shows only the first surface 2 and the two wedges 6 and 6, which are held onto the first surface 2 by screws. Since the screws pass through slots in the wedges 6 and 6, the wedges 6, 6 can each be displaced along the transverse axis Y. FIG. 2c additionally shows the first surface 5 and the first intermediate plate 4. As can be seen, the second intermediate plate 2 is arranged on the first surface 5. The first intermediate plate 4 distances the wedges 6, 6 from the second intermediate plate 2 without interfering with the mobility of the wedges 6, 6. Depending on the size of the slots in them, the wedges 6, 6 can be displaced over the surface of the first intermediate plate 4. The second surface 3 is then arranged on the wedges 6, 6 also without restricting the mobility of the wedges 6, 6. Depending on how far the wedges 6, 6 are displaced, owing to the wedge shape of the wedges 6, 6 the distance between the second intermediate plate 2 and the second surface 3 increases. Thus, the second surface 3 is displaced relative to the first surface 5 along the vertical axis Z. Finally, FIG. 2d shows a view of the test object holder 1 seen from underneath. Due to the particular view chosen, only the first surface 5 and the second intermediate plate 2 can be seen.

[0042] FIG. 3 shows as an example a further possible embodiment of a test object holder 1 according to the invention. In this case, too, the test object holder 1 consists of the first surface 5, the second surface 3, the first intermediate plate 4, the second intermediate plate 2 and two wedges 6 and 6, the wedges 6, 6 again being covered by the second surface 3. In enlarged detail views, FIG. 3 shows a tilting spindle drive 7 for tilting the second surface 3 over the second intermediate plate 2 relative to the first surface 5, around a bearing point 8 about the vertical axis Z, the said bearing point 8 being located in an outer quarter remote from the tilting spindle drive 7 in the longitudinal direction of the test object holder 1. Also, to be seen is a longitudinal spindle drive 9 for displacing the second surface 3 relative to the first surface 5, over the second intermediate plate 2 along the longitudinal axis X. A transverse spindle drive 10 enables the second surface 3 to be displaced relative to the first surface 5, over the first intermediate plate 4 along the transverse axis Y. By means of two wedge spindle drives 11 two wedges 6, 6 can be moved along the transverse axis Y, so that the second surface 3 moves relative to the first surface 5 along the vertical axis Z. By displacing only one wedge 6 or 6 along the transverse axis Y, the second surface 3 can be tilted relative to the first surface 5 about the transverse axis Y. By means of a position indicator 12, a tilt orientation of the second surface 3 relative to the first surface 5 about the vertical axis Z can be determined. Finally, a coordinate display 13 assists an operator of the test object holder 1 in adjusting the test object holder 1, in that the coordinate display makes clear the individual coordinate axes and therefore simplifies the allocation of the spindle drives 7, 9, 10, and 11 to respective displacements along a particular axis or around a particular axis.

[0043] FIG. 4 shows, schematically and as an example viewed in cross-section, a possible embodiment of a convexity 14 which is located on a side-edge of a wedge 6 that faces toward the second surface 3 and extends at least in part over the length of the said side-edge. Owing to the convexity 14 there is only a narrow line of contact between the wedge and the second surface 3 which, even in the event of an unintended and only slight lateral rotation or tilting of the wedge 6, does not result in a change of the orientation of the second surface.

INDEXES

[0044] 1 Test object holder [0045] 2 Second intermediate plate [0046] 3 Second surface [0047] 4 First intermediate plate [0048] 5 First surface [0049] 6, 6 Wedge [0050] 7 Tilting spindle drive [0051] 8 Bearing point [0052] 9 Longitudinal spindle drive [0053] 10 Transverse spindle drive [0054] 11 Wedge spindle drive [0055] 12 Position indicator [0056] 13 Coordinate indicator [0057] 14 Convexity [0058] 50 Drive module [0059] 51 Flange [0060] 100 Drive-train test bench [0061] X Longitudinal axis [0062] Y Transverse axis [0063] z Vertical axis [0064] B Rotation about the transverse axis [0065] C Rotation about the vertical axis