Automotive Test Equipment

Abstract

To provide an automobile testing device capable of reproducing a state at the time when actual tires are mounted, without mounting actual tires.SOLUTION: An automobile testing device has: an axle 2 of a vehicle 1 to be tested; a drive absorption source 3 that imparts rotational force to the axle 2; a coupling mechanism 4 that couples the drive absorption source 3 and the axle 2; a bearing 5 that supports the coupling mechanism 4; and a bearing support part 6 that supports the bearing 5. The automobile testing device comprises: a lifting plate 9 provided on the bearing support part 6; a substrate 8 provided below the lifting plate 9 at a predetermined interval; and an elasticity adjustment mechanism 10 that is provided between the substrate 8 and the lifting plate 9, and adjusts elasticity with respect to the bearing 5.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an automobile testing apparatus that reproduces the conditions during on-road driving and evaluates various performance characteristics of an automobile. [Background technology]

[0002] Conventionally, automotive testing equipment has been used for automotive research and development, design, quality control, etc. With recent technological advances, the automotive industry has seen advances in the performance and functionality of automobiles, and to keep up with this, there is a demand for improved measurement accuracy in automotive testing equipment.

[0003] There are various types of automobile testing equipment depending on the test content. One type is known to perform automobile testing by mounting mock wheels on the axle to be measured. This type of automobile testing equipment is highly convenient because it can evaluate various performances in a test room without actually running the automobile on an external test course, etc., thereby reducing the time and cost required for testing.

[0004] For example, Patent Document 1 discloses a simulated wheel that is attached to the hub of an automobile wheel in place of a wheel with a tire. A real tire, i.e., a real tire, is attached to the outer periphery of this simulated wheel. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 5285005 [Patent Document 2] Patent Publication No. 2017-110956 Summary of the Invention [Problem to be solved by the invention]

[0006] However, depending on the conditions in the test room, it may be difficult to mount a simulated wheel with a real tire on the vehicle to be tested, and a vehicle test device that can be used without a real tire mounted is required.

[0007] On the other hand, the third embodiment of Patent Document 2 discloses an automobile testing device in an intermediate bearing state where only the actual tire is removed from the simulated wheel. However, with an automobile testing device in an intermediate bearing state, it is difficult to reproduce the composite angles consisting of the support stiffness of an actual tire, and the camber angle and toe angle formed by the suspension and steering, and it is not possible to obtain appropriate test results regarding the state when traveling on the road.

[0008] An object of the present invention is to provide an automobile testing device capable of reproducing the condition when an actual tire is mounted, without mounting an actual tire. [Means for solving the problem]

[0009] The automobile testing device of the present invention is characterized by having the following configuration. (1) The axle of the vehicle being tested. (2) A drive sink that provides a rotational force to the axle. (3) A connecting mechanism that connects the drive absorption source and the axle. (4) A bearing that supports the connecting mechanism. (5) A bearing support portion that supports the bearing. (6) A lift plate provided on the bearing support portion. (7) A base plate provided below the lift plate at a predetermined distance. (8) An elasticity adjustment mechanism provided between the base plate and the lift plate for adjusting the elasticity of the bearing.

[0010] In the present invention, the following configurations (1) to (5) can be adopted. (1) A height adjustment mechanism is provided between the substrate and the lift plate, and adjusts the predetermined distance.

[0011] (2) A plurality of height adjustment mechanisms are provided between the substrate and the lift plate, and each of the height adjustment mechanisms is capable of individually adjusting the height of the substrate and the lift plate.

[0012] (3) A plurality of the elasticity adjustment mechanisms are provided between the substrate and the lift plate, and each of the elasticity adjustment mechanisms is capable of individually adjusting the height of the substrate and the lift plate.

[0013] (4) The lift plate is provided as a separate member from the bearing support portion, and the elasticity adjustment mechanism is provided between the lift plate and the bearing support portion.

[0014] (5) The bearing support portion has a horizontal portion arranged horizontally with respect to the base plate, and a vertical portion arranged perpendicular to the horizontal portion and supporting the bearing, the horizontal portion constituting the lift plate. Effect of the Invention

[0015] According to the present invention, it is possible to reproduce conditions similar to those when a simulated wheel with a real tire is mounted, without mounting a simulated wheel with a real tire, and to obtain appropriate test results in situations where it is difficult to mount a simulated wheel with a real tire. In addition, the use of an elasticity adjustment mechanism ensures spring rigidity equivalent to that of a real tire. Furthermore, since the elasticity of the bearing can be easily adjusted as needed without replacing the real tire, tests can be performed under various conditions. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is an overall configuration diagram showing a state in which the first embodiment is used, in which (a) is a front view and (b) is a plan view. [Diagram 2] FIG. 2 is a perspective view showing a state in which the first embodiment is used. [Diagram 3] FIG. 2 is a perspective view showing an elasticity adjustment mechanism and a height adjustment mechanism of the first embodiment. [Figure 4] FIG. 2 is a cross-sectional view showing an elasticity adjustment mechanism and a height adjustment mechanism of the first embodiment. [Diagram 5]FIG. 2 is an exploded perspective view showing an elasticity adjustment mechanism and a height adjustment mechanism of the first embodiment. [Figure 6] FIG. 11 is a cross-sectional view showing an elasticity adjustment mechanism and a height adjustment mechanism of a second embodiment. [Figure 7] FIG. 13 is a perspective view showing an elasticity adjustment mechanism and a height adjustment mechanism of another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] [1. First embodiment] [1-1. Configuration] Hereinafter, a first embodiment of an automobile testing device 100 (hereinafter, referred to as the testing device 100) will be described. As shown in Fig. 1(a) and (b), the testing device 100 includes an axle 2 of an automobile 1 to be tested, a drive source 3 that applies a rotational force to the axle 2, a coupling mechanism 4 that couples the drive source 3 and the axle 2, a bearing 5 that supports the coupling mechanism 4, and a bearing support section 6 that supports the bearing 5. The drive source 3 is, for example, a dynamometer provided outside the automobile 1. As shown in Fig. 2, the coupling mechanism 4 includes, for example, a rotating shaft supported by a bearing (not shown) provided inside the bearing 5, the axle 2 is coupled to an end 4a of the rotating shaft protruding from the bearing 5 toward the vehicle body side by using a flange and a bolt, and the output shaft 3a of the drive source 3 is coupled to an end 4b of the rotating shaft protruding from the bearing 5 toward the drive source 3 side by using a flange and a bolt. The bearing support section 6 is a substantially L-shaped member having a horizontal section 61 and a vertical section 62, and the bearing 5 is fixed to the vertical section 62.

[0018] The connecting mechanism 4 is not limited to the above configuration, and may be any mechanism that connects the axle 2 and the drive source 3, in which the end of the bearing 5 is extended close to the drive source 3 and the end is connected to the drive source 3 with a joint or the like. Also, in Fig. 1(b), the testing device 100 is provided on the front wheels of the automobile 1, but it may be provided on all the wheels or only on the rear wheels depending on the purpose of the test.

[0019] (1) Bearing support part 6 As shown in Fig. 2, a stand 7 is placed on the floor surface of the installation location of the test device 100, a substrate 8 is fixed to the upper part of the stand 7, and a lift plate 9 is placed above the substrate 8 with a predetermined distance therebetween. Above the lift plate 9, a horizontal part 61 of the bearing support part 6 is placed parallel to the lift plate 9. For example, in this embodiment, as shown in the exploded perspective view of Fig. 5, a plurality of through holes are provided facing each other in each of the substrate 8, the lift plate 9, and the horizontal part 61 of the bearing support part 6, and an elasticity adjustment mechanism 10 and a height adjustment mechanism 11 are provided using these through holes.

[0020] (2) Elasticity adjustment mechanism 10 Of the multiple through holes in the horizontal part 61 of the bearing support part 6 and the lift plate 9, elasticity adjustment mechanisms 10 are provided at a total of five locations, including the four corners and the center. As shown in Figs. 3 to 5, in this embodiment, each elasticity adjustment mechanism 10 has a coil spring 101 and an adjustment bolt 102 for adjusting the compression amount thereof. An upper end nut 103a is fixed to each of the through holes provided in the horizontal part 61 of the bearing support part 6, and the upper end of the adjustment bolt 102 extending toward the lower lift plate 9 is screwed into the inside of these upper end nuts 103a. The coil spring 101 is coaxially fitted around the outer periphery of the adjustment bolt 102 protruding from the lower surface of the lift plate 9. A flange 104 having a recess on the lower surface is fixed to the lower surface of the through hole in the horizontal part 61 of the bearing support part 6, and the upper end of the coil spring is fitted into the recess of this flange 104.

[0021] On the other hand, through holes are also provided in the lifting plate 9 facing the five through holes in the horizontal part 61 of the bearing support part 6, and a cylindrical casing 105 that protrudes significantly from the lower surface of the lifting plate 9 is fixed to the inside of the through holes. The lower part of the coil spring 101 and the lower part of the adjustment bolt 102 are inserted inside the cylindrical casing 105.

[0022] Cylindrical casing 105 has flange 105a on the top, and this flange 105a is coupled to the upper edge of a through hole in lift plate 9 to prevent downward movement relative to lift plate 9. A bottom plate 105b that engages the bottom of coil spring 101 is provided at the bottom end of casing 105, and a through hole through which the lower end of adjustment bolt 102 passes is provided in the center of bottom plate 105b. The lower end of adjustment bolt 102 protrudes from the underside of bottom plate 105b of casing 105, and a bottom end nut 103b is screwed into this protruding portion.

[0023] (3) Height adjustment mechanism 11 The substrate 8 and the lift plate 9 are provided with a height adjustment mechanism 11 for adjusting the distance between them. A screw or the like can be used as the height adjustment mechanism 11. The height adjustment mechanism 11 is such that the lift position of the lift plate 9 differs at each part of the lift plate 9, that is, the lift plate 9 is not necessarily parallel to the substrate 8 but can be tilted in any direction, front / back, left / right, or diagonally.

[0024] In this embodiment, height adjustment mechanisms 11 using screws are provided in a number of through holes located at the center of the four sides of the lift plate 9. Each height adjustment mechanism 11 includes a support part 111 shaped like an upside-down dish, and an adjustment bolt 112 whose lower end is movably attached to the support part 111. The bolt part of the adjustment bolt 112 has a structure that allows it to tilt and rotate. In other words, the adjustment bolt 112 is attached to the support part 111 so that it can tilt and rotate. The periphery of the circular support part 111 is fitted into a ring-shaped receiving part 81 fixed to the surface of the substrate 8.

[0025] Nuts 113 are fixed to the plurality of through holes located at the center of the four sides of the lift plate 9. As shown in Figs. 4 and 5, each nut 113 has a flange 113a on the outer periphery, and is fixed to the lift plate 9 by fixing the flange 113a to the lower surface of the lift plate 9. The upper end of the adjustment bolt 112 of each height adjustment mechanism 11 is screwed into the inside of each nut 113. An engagement portion 112a for rotating the adjustment bolt 112 with a tool such as a wrench is provided near the dish-shaped support portion 111 of the adjustment bolt 112. By rotating the engagement portion 112a with a wrench or the like, the adjustment bolt 112 rotates relative to the support portion 111 and the nut 113, and the distance between the support portion 111 and the nut 113 can be adjusted.

[0026] By changing the amount of adjustment at four points of the height adjustment mechanism 11, the adjustment bolt 112 can be tilted with respect to the support part 111. As a result, when the lift plate 9 is tilted with respect to the substrate 8, it is assumed that the angle between the adjustment bolt 112 and the substrate 8 will be different at each of the four height adjustment mechanisms 11.

[0027] [1-2. Effect] The test device 100 of this embodiment is used in a bench test, which is a test performed with an automobile 1 parked in the same place, as shown in Fig. 1. The tires are removed from the axle 2 of the automobile 1 to be measured, and the axle 2 is fixed to an end 4a of a connecting mechanism 4 supported by a bearing support part 6 of the test device 100. The other end of the connecting mechanism 4 is connected to the output shaft 3a of the drive absorption source 3.

[0028] Next, the compression amount of the adjustment bolt 102 of the elasticity adjustment mechanism 10 is adjusted to adjust the elasticity of the coil spring 101 to that of an actual tire. That is, the upper end of the coil spring 101 is located near the lower surface of the horizontal part 61 via the flange 104, and the lower end is located near the upper surface of the base plate 8 via the bottom plate 105b of the casing 105. Meanwhile, the upper end of the adjustment bolt 102 protrudes from the upper surface of the horizontal part 61, and an upper end nut 103a is attached to the protruding portion, and the lower end of the adjustment bolt 102 protrudes from the bottom plate 105b of the casing 105, and a lower end nut 103b is attached to the protruding portion. Therefore, when the upper end nut 103a or the lower end nut 103b of the adjustment bolt 102 is tightened or loosened, the distance between the upper end nut 103a or the lower end nut 103b, i.e., the distance between the horizontal part 61 and the lift plate 9, is expanded or contracted, the degree of compression of the coil spring 101 disposed between them changes, and the elasticity of the coil spring 101 applied from the lift plate 9 to the horizontal part 61 changes. As a result, the elasticity applied to the bearing 5 via the vertical part 62 fixed integrally with the horizontal part 61 changes, so that the connecting mechanism 4 supported by the bearing 5 can be supported with an appropriate elasticity according to the actual tire. Note that the elasticity of the coil spring 101 may be changed by tightening or loosening both the upper end nut 103a or the lower end nut 103b in this way, or the elasticity of the coil spring 101 may be changed by fixing one of the upper end nut 103a or the lower end nut 103b after adjusting the length of the adjustment bolt 102 in advance and tightening or loosening the other.

[0029] In order to reproduce the complex angle consisting of the camber angle, toe angle, etc. corresponding to the actual tire, it is possible to adjust the height adjustment mechanism 11 and change the angle of the bearing support part 6 as follows. The angle adjustment by the height adjustment mechanism 11 may be performed either before or after the above-mentioned elasticity adjustment. First, by rotating the engagement part 112a of the adjustment bolt 112 provided in the height adjustment mechanism 11 with a spanner or the like, the adjustment bolt 112 rotates relative to the support part 111 and the nut 113, and adjusts the distance between the support part 111 and the nut 113, that is, the distance between the base plate 8 and the lift plate 9. In this case, since the lower part of the adjustment bolt 112 is supported by the support part 111 so as to be tiltable, the adjustment bolt 112 can rotate relative to the nut 113 even if the angle between the base plate 8 and the lift plate 9 changes.

[0030] When the angle of the lift plate 9 and horizontal portion 61 relative to the base plate 8 changes in this way, the angle of the vertical portion 62 integrated with the horizontal portion 61 and the bearing 5 supported thereon also changes. For example, when it is desired to set the camber angle to a positive camber (when the upper portion of the tire is tilted outward), the inclination angle of the lift plate 9 relative to the base plate 8 is adjusted by rotating the engagement portion 112a with a wrench or the like so that the adjustment bolt 112 on the automobile side is lengthened or the adjustment bolt 112 arranged opposite to it is shortened. In this way, by changing the length of any of the four adjustment bolts 112, the angle of the lift plate 9 and horizontal portion 61 can be freely adjusted in any direction.

[0031] [1-3. Effects] The effects of this embodiment having the above-described configuration and function are as follows.

[0032] (1) Since the elasticity adjustment mechanism 10 is provided, it is possible to reproduce conditions similar to those when a real tire is mounted, without mounting a real tire. Therefore, appropriate test results can be obtained even in situations where it is difficult to mount a simulated wheel with a real tire.

[0033] (2) The spring stiffness equivalent to that of an actual tire can be ensured by adjusting the elasticity adjustment mechanism 10. In addition, the elasticity of the bearing 5 can be easily adjusted appropriately without replacing the tire, making it possible to reproduce tests under various conditions.

[0034] (3) The height adjustment mechanism 11 equipped with multiple adjustment bolts 112 enables adjustment of the angle of the lifting plate 9, i.e., the bearing support part 6, and makes it possible to reproduce various angles, such as camber angles and toe angles corresponding to the support stiffness, suspension, and steering of the actual tires of the test subject automobile.

[0035] (4) Since the elasticity adjustment mechanism 10 and the height adjustment mechanism 11 are provided between the lifting plate 9 and the bearing support portion 6, the height, elasticity, and angle can be adjusted, respectively, making it possible to more accurately reproduce conditions similar to those when an actual tire is mounted.

[0036] [2. Second embodiment] In the second embodiment, the adjustment bolt 102 that constitutes the elasticity adjustment mechanism 10 not only adjusts elasticity, but also performs a complex angle adjustment consisting of height adjustment and camber angle and toe angle equivalent to those of an actual tire. As shown in FIG. 6, the horizontal part 61 of the bearing support part 6 doubles as the lifting plate 9 of the first embodiment, or it can be said that the vertical part 62 of the bearing support part 6 is directly fixed to the lifting plate 9.

[0037] In the second embodiment, the lower part of the adjustment bolt 102 is slidably inserted into a through hole 82 provided in the substrate 8. The inner diameter of the through hole 82 is larger than the outer diameter of the adjustment bolt 102, and a gap is formed between the two, so that the substrate 8 and the adjustment bolt 102 do not come into contact even if the adjustment bolt 102 is inclined relative to the substrate 8. The lower end of the adjustment bolt 102 protrudes from the lower surface of the substrate 8, and a lower end nut 103b is screwed into the protruding part with a spherical washer 106 sandwiched therebetween. The spherical washer 106 is composed of two members: a fixed-side washer with a bowl-shaped recess, and a rotating-side washer with a spherical protrusion that fits into the recess of the fixed-side washer. The washer on the rotating side is in close contact with the lower end nut 103b and moves together with the lower end nut 103b and the adjustment bolt 102, and when the angle of the adjustment bolt 102 and the lower end nut 103b changes, the washer on the rotating side slides inside the washer on the fixed side and changes its angle, so that the angle of the adjustment bolt 102 and the lower end nut 103b relative to the base plate 8, which is the fixed member, can be freely changed. The lower end of the coil spring 101 abuts against the upper surface of the base plate 8, and a recess 83 is formed on the edge of the through hole 82 to position the coil spring 101, and the lower end of the coil spring 101 is fitted into the recess 83, preventing the coil spring 101 from moving downward or left and right.

[0038] An outer sleeve 114 constituting the height adjustment mechanism 11 is rotatably inserted into the through hole 91 provided in the lift plate 9, and an inner sleeve 115 is screwed into the inner side of the outer sleeve 114. The outer sleeve 114 has a flange 114a that spreads outward at its lower end, and abuts against the lower surface of the lift plate 9 with the upper surface of the flange 114a abutting against the lower edge of the through hole 91. A female thread is provided on the inner surface of the outer sleeve 114, and this female thread engages with a male thread provided on the outer peripheral surface of the inner sleeve 115, so that the outer sleeve 114 moves up and down relative to the inner sleeve 115 while rotating. An engagement portion 114b for engaging a tool for rotating the outer sleeve 114 is provided at the upper end of the outer sleeve 114. In addition, a locking nut 114c screwed into the outer periphery of the inner sleeve 115 is provided at the upper end of the outer sleeve 114.

[0039] A slide hole 115a extending in the axial direction is provided in the center of the inner sleeve 115, and the upper part of the adjustment bolt 102 is inserted into this slide hole 115a so as to be slidable in the axial direction. The upper end of the adjustment bolt 102 protrudes above the upper surface of the inner sleeve 115, and an upper end nut 103a is screwed into the protruding part. The lower surface of the upper end nut 103a abuts against the upper surface of the inner sleeve 115, preventing the adjustment bolt 102 from moving downward relative to the inner sleeve 115. The lower end surface of the inner sleeve 115 is located in the middle part of the outer sleeve 114, and a space surrounded by the outer sleeve 114 is formed between the lower end of the outer sleeve 114 and the lower end surface of the inner sleeve 115, and the upper end of the coil spring 101 is inserted into this space. The periphery 115b of the lower end surface of the inner sleeve 115 rises like an edge, and the upper part of the coil spring 101 is fitted inside it, preventing the coil spring 101 from moving upward and left and right.

[0040] In the second embodiment having such a configuration, the elasticity is adjusted by rotating the inner sleeve 115 inside the outer sleeve 114, and the inner sleeve 115 moves up and down relative to the outer sleeve 114. At this time, the coil spring 101 is compressed or expanded by the lower surface of the inner sleeve 115, and the elasticity of the coil spring 101 between the substrate 8 and the inner sleeve 115, i.e., between the lift plate 9 to which the inner sleeve 115 is fixed and the substrate 8 is increased or decreased. Since the elasticity of the coil spring 101 is adjusted by the relative movement of the inner sleeve 115 with respect to the lift plate 9, the positional relationship between the substrate 8 and the lift plate 9 does not change, and only the elasticity can be adjusted while maintaining the lift position of the lift plate 9. When adjusting the elasticity, instead of changing the relative position between the inner sleeve 115 and the outer sleeve 114, it is also possible to replace the coil spring 101 with one having a different spring constant.

[0041] To raise or lower the lift plate 9 in order to adjust the height of the bearing 5, the outer sleeve 114 is rotated in the through hole 91 of the lift plate 9 to change the relative position between the outer sleeve 114 and the inner sleeve 115, thereby increasing or decreasing the amount of protrusion of the inner sleeve 115 from the upper end of the outer sleeve 114. For example, when the outer sleeve 114 is rotated to increase the amount of protrusion of the inner sleeve 115, the distance between the lift plate 9 connected to the inner sleeve 115 via the adjustment bolt 102 and the lift plate 9 engaged with the outer sleeve 114 via the flange 114a changes, and the lift plate 9 tilts so as to approach the substrate 8. At this time, the adjustment bolt 102 and the lower end nut 103b are in contact with the lower surface of the base plate 8 via the spherical washer 106, so even if the adjustment bolt 102 tilts together with the lift plate 9, the spherical washer 106 slides to absorb the movement, and since the inner diameter of the through hole 82 is larger than the outer diameter of the adjustment bolt 102 as described above and a gap is formed between them, the base plate 8 does not interfere with the tilt of the adjustment bolt 102. In this way, by selectively tightening or loosening some of the outer sleeves 114 supporting the five adjustment bolts 102, the angle of the lift plate 9 relative to the horizontally supported base plate 8 can be changed, and the angle of the lift plate 9 and the bearing 5 supported by the vertical part 62 can be adjusted to match the camber angle and toe angle of the vehicle being tested.

[0042] In this way, in the second embodiment, the adjustment bolt 102 also serves as the structure of the elasticity adjustment mechanism 10, and the horizontal part 61 of the bearing support part 6 also serves as the lifting plate 9, so that it is possible to provide an elasticity adjustment mechanism and a height adjustment mechanism with a reduced number of parts, thereby enabling costs to be reduced.

[0043] 3. Other embodiments Although the embodiments including modified examples have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope of the invention and its equivalents as described in the claims, as well as in the scope and gist of the invention. The following is an example.

[0044] (1) As shown in FIG. 7, the height adjustment mechanism 11 has the same configuration as the first embodiment, and the elasticity adjustment mechanism 10 can use five rubber mounts 201. In this case, in order to adjust the elasticity, the rubber mounts 201 may be replaced with those made of a material having a different elasticity, or the height, thickness, cross-sectional shape, or number of the rubber mounts 201 may be changed. In addition, the material used for the elasticity adjustment mechanism 10 is not limited to rubber, and various elastic materials such as resin cushioning materials, air springs, and leaf springs may be used. Instead of the elastic materials, air cylinders and gas dampers may be used. In addition, instead of screws, mechanisms capable of adjusting height such as hydraulic cylinders, rack gears, and pantographs may be used for the height adjustment mechanism 11. In addition, if a coil spring or an air cylinder is used for the height adjustment mechanism 11, elasticity is also added. In this case, the height adjustment mechanism 11 and the elasticity adjustment mechanism 10 do not necessarily need to be provided separately, and a mechanism in which the height adjustment mechanism 11 and the elasticity adjustment mechanism 10 are combined may be used. Also, the elasticity adjustment, height adjustment, and angle adjustment may be individually adjusted by different methods.

[0045] (2) The coil spring 101, the adjustment bolt 102, the support portion 111, the adjustment bolt 112, and the number, arrangement positions, and shapes of the through holes are not limited to those shown in this embodiment.

[0046] (3) The shape of the bearing support portion 6 does not have to be approximately L-shaped, and a U-shape, a rectangle, a box shape with an open top, or the like can be used as appropriate.

[0047] (4) The method of adjusting the elasticity adjustment mechanism 10 and / or the height adjustment mechanism 11 is not limited to manual adjustment, and may be automatic adjustment.

[0048] (5) In the above embodiment, the inclination and height directions are adjusted, but it is also possible to combine a configuration in which the substrate 8 is supported movably in the horizontal direction (front / back, left / right, etc.) relative to the stand 7 using a long hole or groove, and the fixed positions of the two are changed using an adjustment screw, etc., to perform fine adjustment in the horizontal direction. In addition, by interposing springs with different spring constants, it is also possible to adjust the elasticity in any direction, including the horizontal and oblique directions. [Explanation of symbols]

[0049] 1. Automobiles 2...Axle 3. Driving sink 3a…Output shaft 4…Connection mechanism 5...Bearing 6...Bearing support part 61…Horizontal part 62…Vertical part 7…Frame 8…Substrate 81…Receiving part 82...Through hole 83…Recess 9…Lifting plate 91...Through hole 10...Elasticity adjustment mechanism 101...Coil spring 102…Adjustment bolt 103a...Upper nut 103b...Lower nut 104...Flange 105…Casing 105a...Flange 105b…Bottom plate 106...Spherical washer 11…Height adjustment mechanism 111...Support part 112…Adjusting bolt 112a...Engagement part 113...Nut 114…Outer sleeve 114a...Flange 114b...Engagement part 114c…Anti-loosening nut 115…Inner sleeve 115a...slide hole 115b…Surroundings 201...Rubber mount 100...Automobile testing equipment

Claims

1. An axle of a vehicle to be tested; A drive source that provides a rotational force to the axle; a coupling mechanism that couples the drive source and the axle; A bearing for supporting the connecting mechanism; A bearing support portion that supports the bearing; A lift plate provided on the bearing support portion; a base plate provided below the lift plate at a predetermined distance; a plurality of elasticity adjustment mechanisms provided between the base plate and the lift plate for adjusting elasticity with respect to the bearings; A coil spring provided in the elasticity adjustment mechanism; an adjustment bolt capable of adjusting the compression amount of the coil spring; Equipped with Each of the elastic adjustment mechanisms is capable of individually adjusting the height of the substrate and the lift plate.

1. An automobile testing device comprising:

2. 2. The vehicle testing device according to claim 1, further comprising a height adjustment mechanism provided between the base plate and the lift plate for adjusting the predetermined distance.

3. 3. The automobile testing device according to claim 2, wherein a plurality of height adjustment mechanisms are provided between the substrate and the lift plate, and each of the height adjustment mechanisms is capable of individually adjusting the height of the substrate and the lift plate.

4. The lift plate is provided as a separate member from the bearing support portion, 4. The vehicle testing device according to claim 1, wherein the elasticity adjustment mechanism is provided between the lift plate and the bearing support portion.

5. The bearing support portion includes a horizontal portion disposed horizontally to the substrate; a vertical portion disposed perpendicular to the horizontal portion and supporting the bearing; 4. An automobile testing device according to claim 1, wherein the horizontal portion constitutes the lift plate.

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