JP2003302313A - Apparatus for loading spindle of vehicle with weight - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for loading a spindle of a vehicle with a weight, which can widen a steering angle. <P>SOLUTION: The apparatus for loading the spindle of the vehicle with the weight is composed of a lower side tilting member (13), an upper side tilting member (31), three vertical struts (32-34) which make up a parallel link together with the lower side tilting member and the upper side tilting member, a forward/ backward direction driving device (66) which drives the upper side tilting member in the forward and backward directions, a spindle supporting device (S) which is installed to the upper side tilting member so as to be rotative and supports the spindle of vehicle, a pair of lateral direction driving devices (48) which drive the spindle supporting device in a direction approximately parallel to the axis line of the spindle, an upward/downward direction driving device (8) which drives the lower side tilting member in the upward and downward directions, and a tilting driving device (21) which tilts the lower side tilting member about the center of the axis being in the forward and backward directions. In the apparatus, the spindle supporting device is rotated by a differential action of the pair of lateral direction driving devices. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle spindle load applying device for applying a load to a vehicle spindle during a vehicle test such as evaluation of strength and characteristics of a vehicle suspension.

[0002]

2. Description of the Related Art The load applied to a vehicle spindle may be a total of six axes of the following X, MX, Y, MY, Z and MZ. X: Force in the longitudinal direction of the vehicle (direction vertical and horizontal to the axis of the spindle) (that is, force in the front-rear direction) MX: Moment around X (so-called camber moment) Y: Lateral direction (axial direction of spindle) MY: Moment around Y (so-called braking moment) Z: Vertical force (so-called vertical direction) MZ: Moment around Z (so-called steering moment) In this specification, the longitudinal direction of the vehicle is approximately the front-back direction. ,
The axial direction of the spindle is substantially horizontal, and the three directions of the vertical direction, the front-back direction, and the horizontal direction are orthogonal to each other. The conventional vehicle spindle load device can apply vertical force (Z), longitudinal force (X), lateral force (Y) and braking moment (MY) to the vehicle spindle. Few are able to apply all six axis loads.

By the way, in recent years, automobile manufacturers tend to identify problems by virtual evaluation using a computer. To do this, run on a test course,
It is necessary to maintain the consistency of evaluation between the test by the test machine and the virtual test. Therefore, there is a proposal that the evaluation should be performed based on the measured value of the 6-component force meter attached to the spindle. In order to control the force of 6 degrees of freedom, a vehicle spindle load applying device capable of applying a force of 6 degrees of freedom, that is, a load of 6 axes is required.

A conventional example of such a vehicle spindle load applying device is shown in US Pat. No. 6,257,055. The vehicle spindle load applying device of US Pat. No. 6,257,055 will be described with reference to FIG. FIG. 6 is a perspective view of a conventional vehicle spindle load applying device.

The spindle 02 of the vehicle 01 is mounted on the spindle mounting body 04 of the vehicle spindle load device 03. (1) The spindle mounting body 04 is vertically moved by a pair of front and rear vertical struts 06, and a vertical force Z is applied to the spindle 02 by this vertical movement. (2) A lateral rod 07 is attached to an intermediate portion of each vertical strut 06, and a moment MZ about Z is applied to the spindle 02 by the differential between the pair of front and rear first and second lateral rods 07. (3) A front-rear rod 08 is attached to an intermediate portion of the front vertical strut 06, and a front-rear direction force X is applied to the spindle 02 by the front-rear rod 08. (4) The third lateral rod 09 is attached to the lower end of the spindle mounting body 04, and the moment MX about X is applied to the spindle 02 by the third lateral rod 09. (5) A lateral force Y is applied to the spindle 02 by the synchronous movement of the pair of front and rear first and second lateral rods 07.
(6) The differential between the pair of front and rear vertical struts 06 causes Y
A rotating moment MY is applied to the spindle 02.

[0006]

By the way, the lower ends of the pair of vertical struts 06 are connected to each other by a rocking body 011. In a neutral state where the spindle 02 is not steered, the spindle mounting body 0 is connected.
4. The vertical struts 06 and the rocking body 011 constitute a parallel link. Further, the heavy load of the vehicle 01 is applied to the vertical struts 06. Then, when a moment MZ about Z is applied to the spindle 02,
The first and second lateral rods 07 are differentially rotated to rotate the spindle mounting body 04 about the vertical axis. At this time,
The vertical struts 06 tilt in different directions so that they are not parallel to each other, and the spindle mounting body 04 is twisted with respect to the oscillating body 011 and is not a parallel link. When the weight of the vehicle 01 is applied to the vertical struts 06 in a state where the spindle mounting body 04 is twisted with respect to the rocking body 011 a force is generated in a direction to further twist the spindle mounting body 04. Since this twisting force increases as the steering angle increases, it is not possible to increase the steering angle in terms of strength.

Further, during steering, a prying force is generated at the connecting portion at the end of the vertical strut 06. A large load of the vehicle 01 is applied to the vertical struts 06, and if the vertical struts 06 are twisted too much, the joints at the ends of the vertical struts 06 may be damaged due to abrasion or the like. Therefore, a large steering angle cannot be taken.

Further, since the lateral rods 07 and the longitudinal rods 08 push the middle portion of the vertical struts 06, a bending moment is generated in the vertical struts 06. A large load of the vehicle 01 is applied to the vertical struts 06, and there is a risk of buckling when the intermediate portion is pushed. Therefore, it is necessary to increase the strength of the vertical strut 06, which increases the weight.

The moment MY about the Y (so-called braking moment) is applied by the differential of the pair of vertical struts 06. As described above, the large load of the vehicle 01 is applied to the vertical struts 06. Therefore, it becomes difficult to delicately control the moment MY about the Y, and a large force is applied to the joint portion at the end portion of the vertical strut 06, which may damage the joint portion due to abrasion or the like.

When a third lateral rod 09 is loaded with a moment MX around X (so-called camber moment) MX, a lateral force Y is simultaneously generated. When a lateral force Y is applied by the lateral rod 07, a moment MX about X is generated at the same time. Therefore, delicate control of the moment MX around X becomes difficult.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a vehicle spindle load applying device capable of increasing a steering angle.

[0012]

A vehicle spindle load applying apparatus of the present invention is a vehicle spindle load applying apparatus for applying a load to a vehicle spindle, wherein a lower tilting body (1) is used.
3), an upper tilting body (31) arranged substantially parallel to the lower tilting body, an upper end swingably attached to the upper tilting body, and a lower end swinging to the lower tilting body. Three vertical struts (32-32) that are movably attached to form a parallel link with the lower tilting body and the upper tilting body.
34), an anteroposterior direction drive device (66) for driving the upper tilting body in a direction substantially perpendicular to the axis of the spindle and substantially horizontal, and rotating about an axis substantially perpendicular to the upper tilting body. A spindle support device (S) that is movably mounted and supports the vehicle spindle; a pair of lateral drive devices (48) that drives the spindle support device in a direction substantially parallel to the axis of the spindle; A vertical driving device (8) for vertically moving the side tilting body and a tilting driving device (21) for tilting the lower tilting body around an axis in the front-rear direction, the difference between the pair of lateral direction driving devices. The movement causes the spindle support device to rotate.

In another vehicle spindle load applying device of the present invention, the lower tilting body, the upper tilting body arranged substantially parallel to the lower tilting body, and the upper end of the tilting body swingable on the upper tilting body. And a lower end swingably attached to the lower tilting body to form a parallel link together with the lower tilting body and the upper tilting body, and the vertical axis of the spindle. A front-rear driving device that drives the upper tilting body in a vertical and substantially horizontal direction, and a spindle that is rotatably attached to the upper tilting body about an axis that is substantially vertical and that supports the vehicle spindle. A support device, a rotation drive device for rotating the spindle support device, a vertical movement drive device for vertically moving the lower tilting body, and a tilting device for tilting the lower tilting body around a longitudinal axis. And a that tilting drive.

Further, the spindle support device is provided with a rotating body (36) rotatably attached to the upper tilting body, and rotates about an axis attached to the rotating body and substantially parallel to the axis of the spindle. And a possible spindle mount (41).

Further, a brake load device (76, 81, 82, 84) for applying a torque to the spindle mount may be provided.

Then, the brake load device is provided with a brake load link, and the brake load link is
The central portion is rotatably attached to the upper tilting body, and one end is connected to the spindle attaching body,
The other end is driven by a brake drive device via a brake rod, and when the front-back direction drive device drives the upper tilting body, simultaneously drives the brake rod together with the upper tilting body in synchronization. Synchronous link mechanisms (72-74) may be provided.

Further, the spindle support device comprises a rotating body (92) rotatably attached to the upper tilting body, and a mounting surface (91) provided on the upper side of the rotating body, The tire (96) attached to the spindle may be mounted on the mounting surface.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a vehicle spindle load applying device according to the present invention will be described. FIG. 1 is a perspective view of a vehicle spindle load applying device according to an embodiment of the present invention. FIG. 2 is a front view of a main part of the vehicle spindle load applying device. FIG. 3 is a side view of a main part of the vehicle spindle load applying device. FIG. 4 is an explanatory diagram for explaining the braking moment and the load of the force in the front-rear direction. FIG. 5 is an explanatory view of a modified example of the vehicle spindle load applying device.

In FIG. 1, a pair of support brackets 2 and two support bases 3 and 4 are provided upright on a base 1 of a vehicle spindle load device. A rotary shaft 2a hung over the pair of support brackets 2 extends in the front-rear direction, and a bell crank 6 is rotatably attached to the rotary shaft 2a. In FIG. 2, at one end of the bell crank 6, a piston rod 9 of a hydraulic cylinder device 8 which is a telescopic drive device as a vertical motion drive device is attached. Further, the cylinder 11 of the hydraulic cylinder device 8 is attached to the support base 3, and when the hydraulic cylinder device 8 expands and contracts, the bell crank 6 rotates about the rotating shaft 2a.

At the other end of the bell crank 6, a lower tilting plate 13, which is a lower tilting body, is provided with a tilting shaft 14 extending in the front-rear direction.
Is attached so as to be tiltable around the center of the bell crank 6, and when the bell crank 6 rotates, the lower tilt plate 13 moves up and down.

A lower portion of the lower tilting plate 13 is formed with a protruding portion 13a protruding downward. Further, the link 16 rotatably hangs downward from the rotation shaft 2a. And
The lower end of the link 16 and the lower end of the protrusion 13a are connected by a link 17, and the bell crank 6, the protrusion 13a of the lower tilting plate 13, and the links 16 and 17 form a parallel link. A piston rod 22 of a hydraulic cylinder device 21, which is a telescopic drive device as a tilt drive device, is attached to a connecting portion between the link 16 and the link 17. The cylinder 23 of the hydraulic cylinder device 21 is attached to the support base 3, and
When is expanded and contracted, the lower tilting plate 13 rotates about the tilting shaft 14 via the link 17. The tilting angle of the lower tilting plate 13 with respect to the horizontal plane is such that the bell crank 6, the protruding portion 13a of the lower tilting plate 13 and the links 16 and 17 constitute a parallel link even when the hydraulic cylinder device 8 operates. Being maintained,

Above the lower tilting plate 13, an upper tilting plate 31 is arranged as an upper tilting body substantially parallel to the lower tilting plate 13. Then, between the lower tilting plate 13 and the upper tilting plate 31, three vertical struts 32, 33, 34 are swingably attached. This vertical strut 3
2, 33, 34 have substantially the same length, and the lower tilting plate 13,
Upper tilt plate 31 and vertical struts 32, 33, 34
And, it constitutes a parallel link. Therefore, when the lower tilting plate 13 moves up and down, the upper tilting plate 31 vertically moves in synchronization, and when the lower tilting plate 13 tilts, the upper tilting plate 31 tilts synchronously. The vertical struts 32,
33 and 34, two of the three are in the same plane, and the other one
The book is outside this plane.

A rotating body 36 is rotatably provided above the upper tilting plate 31 via a cross bearing 37 (see FIG. 4), and the rotating body 36 is substantially perpendicular to the upper tilting plate 31. It is possible to rotate about an axis. A ring-shaped outer ring 38 is integrally provided on the upper part of the rotating body 36, and an inner ring 41 is rotatably provided inside the outer ring 38 via a bearing 39 (see FIG. 4). Has been. In this inner ring 41, 6
The test body, that is, the spindle of the vehicle is mounted via the force sensor, and the inner ring 41 functions as a spindle mounting body and rotates about the spindle axis. Then, the rotating body 36, the bearing 37, the outer ring 38, the bearing 39 and the inner ring 41 described above are
A spindle support device S is configured.

On the front and rear sides (left and right in FIG. 3) of the lower portion of the outer ring 38, there are provided projecting portions 43 projecting downward, and lateral rods 44 are swingably attached to the projecting portions 43, respectively. There is. The other end of the lateral rod 44 is swingably connected to one end of a bell crank 46. The bell crank 46 is attached to the upper end of the support base 3 so as to be rotatable about a rotation shaft 47. The rotating shaft 47 extends in the front-rear direction. Further, the other end of the bell crank 46 is provided with a piston rod 49 of a hydraulic cylinder device 48 which is a telescopic drive device as a lateral drive device.
Is attached. Further, the cylinder 51 of the hydraulic cylinder device 48 is attached to the base 1, and when the hydraulic cylinder device 48 expands and contracts, the bell crank 46 rotates about the rotating shaft 47 and moves the lateral rod 44 in the lateral direction. Let When the pair of lateral rods 44 simultaneously move in the same direction, the spindle support device S and the upper tilting plate 31 move laterally (left and right in FIG. 2). On the other hand, when the pair of lateral rods 44 simultaneously move in different directions and become differential, the spindle support device S rotates with respect to the upper tilting plate 31 to perform steering. This steering angle is larger than in the conventional example, for example,
It is about ± 30 °.

A front-rear rod 61 is swingably attached to one of the front side and the rear side of the upper tilting plate 31 (on the left side in FIG. 3, the side on which the support base 4 is arranged). The front-rear rod 61 has a bifurcated shape and restrains the upper tilting plate 31 so as to prevent it from rotating around the vertical axis.
The other end of the front-rear rod 61 has a bell crank 62.
Is swingably connected to one end of the. The bell crank 62 is attached to the upper end of the support base 4 so as to be rotatable about a rotation shaft 63. The rotation shaft 63 extends in the lateral direction (direction substantially parallel to the axis of the spindle).
A piston rod 67 of a hydraulic cylinder device 66, which is a telescopic drive device as a front-back direction drive device, is attached to the other end of the bell crank 62. Further, the cylinder 68 of the hydraulic cylinder device 66 is attached to the base 1, and when the hydraulic cylinder device 66 expands and contracts, the bell crank 62 rotates about the rotation shaft 63 and moves the front-rear direction rod 61 in the front-rear direction. Let Then, the upper tilting plate 31 moves in the front-rear direction (left-right direction in FIG. 3).

In FIG. 4, a brake bell crank 72 is rotatably attached to a connecting shaft 71 connecting the bell crank 62 and the longitudinal rod 61. Also,
A link 73 is rotatably attached to the rotary shaft 63 of the bell crank 62, and one end of the brake bell crank 72 is connected to the other end of the link 73 by a link 74. The bell crank 62, the brake bell crank 72, and the links 73 and 74 form a parallel link. At the other end of the link 73, a hydraulic cylinder device 76, which is a telescopic drive device as a brake drive device, is provided.
The piston rod 77 of is attached. Further, the cylinder 78 of the hydraulic cylinder device 76 is attached to the base 1, and when the hydraulic cylinder device 76 expands and contracts, the brake bell crank 72 via the links 73 and 74.
Rotates about the connecting shaft 71. A brake rod 81 is attached to the other end of the brake bell crank 72, the brake rod 81 extends in the front-rear direction, and the other end is swingably attached to the brake load link 82. The brake load link 82 has a central portion rotatably attached to the upper tilting plate 31 about an attachment shaft 83, and has the other end connected to the inner ring 41 via a second link 84. The mounting shaft 83
Extends laterally. When the brake bell crank 72 rotates, the brake rod 81 moves back and forth, the brake load link 82 rotates about the mounting shaft 83, and the inner ring 41 moves the spindle axis line through the second link 84. Rotate around. The rotation angle of the inner ring 41 is a relatively small angle (90 ° or less), for example,
It is about ± 15 °.

The hydraulic cylinder device 8, 21, 48, 6
6, 76 are controlled by a controller (not shown). A spindle is attached to the inner ring 41 via a 6-component force meter, and the measured value of the 6-component force meter is input to the control device.

In the vehicle spindle load applying apparatus of the embodiment having the above-mentioned structure, the operation of applying the following 6-axis load will be described. (1) When applying a force X in the front-back direction. The hydraulic cylinder device 66 is operated and the piston rod 67 is expanded and contracted. Then, the bell crank 62 rotates to move the front-rear direction rod 61 in the front-rear direction, and accordingly,
The upper tilt plate 31 and the spindle support device S move in the front-rear direction. As a result, the force X in the front-back direction is applied to the spindle.
Is added. At this time, the brake bell crank 72, the links 73 and 74, and the bell crank 62 constitute a parallel link as a synchronous link mechanism, and the brake rod 81 is simultaneously moved in synchronization with the front-rear direction rod 61. The occurrence of the moment MY about Y is prevented as much as possible.

(2) To add a moment around X (so-called camber moment) MX. The hydraulic cylinder device 21 is operated and the piston rod 22 is expanded and contracted. Then, via the link 17, the lower tilting plate 1
3 tilts, and with this tilt, the vertical struts 32,
The upper tilting plate 31 tilts via 33 and 34. Then, the spindle support device S tilts around the front-back direction. As a result, a moment MX about X is applied to the spindle.

(3) When a force Y in the lateral direction (axial direction of the spindle) is applied. The pair of hydraulic cylinder devices 48 are operated to expand and contract the pair of piston rods 49 in the same direction. Then, the bell crank 46 rotates to move the lateral rod 44 in the lateral direction, and accordingly, the upper tilting plate 31 and the spindle support device S move in the lateral direction. As a result, a lateral force Y is applied to the spindle.

(4) When a moment around Y (so-called braking moment) MY is applied. The hydraulic cylinder device 76 is operated and the piston rod 77 is expanded and contracted. Then, the bell bell 72 for brakes rotates via the link 74, and the brake rod 81 moves in the front-rear direction in accordance with this rotation. Then, by the movement of the brake rod 81 in the front-rear direction, the brake load link 82 rotates about the mounting shaft 83, and the inner ring 41 is rotated via the second link 84. As a result, a moment MY about Y is applied to the spindle.

(5) When applying a force Z in the vertical direction (so-called vertical direction). The hydraulic cylinder device 8 is operated and the piston rod 9 is expanded and contracted. Then, the bell crank 6 rotates to move the lower tilting plate 13 in the vertical direction, and accordingly, the upper tilting plate 31 and the spindle support device S move in the vertical direction. As a result, a vertical force Z is applied to the spindle. At this time, the bell crank 6, the projecting portion 13a of the lower tilting plate 13 and the links 16 and 17 constitute a parallel link, and the tilting of the lower tilting plate 13 is prevented as much as possible. Therefore, when the vertical force Z is applied, it is possible to prevent the moment around X (so-called camber moment) MX from being affected as much as possible.

(6) To add a moment around Z (so-called steering moment) MZ. The pair of hydraulic cylinder devices 48 are operated, and the pair of piston rods 49 are expanded and contracted in different directions to make them differential. Then, the bell crank 46 rotates to move the lateral rods 44 laterally and in different directions.
Along with that, the rotating body 36, that is, the spindle support device S, rotates in the vertical direction. As a result, a moment MZ about Z is applied to the spindle. Therefore,
The pair of hydraulic cylinder devices 48 includes a spindle support device S
It functions as a rotation drive device for rotating the. Also,
In the neutral state of the vehicle spindle load applying device, the connecting portion between the brake load link 82 and the second link 84 is located below the inner ring 41 and substantially in the middle of the pair of lateral rods 44, so that the brake is applied. Even if steering (differential of the lateral rod 44) is performed in the cut state (the state where the brake load link 82 is rotated), the braking force is prevented as much as possible.

As described above, in this embodiment, it is possible to apply a force of 6 degrees of freedom to the spindle attached to the spindle support device S. Further, since the upper tilting plate 31 does not move when the moment MZ about Z is applied, the upper tilting plate 31 and the vertical struts 32, 33, 3 are not moved.
The parallel link composed of the lower tilting plate 4 and the lower tilting plate 13 does not collapse. Therefore, a large steering angle can be taken. Further, since no force is applied from the side to the middle portion of the vertical struts 32, 33, 34 to which a large load of the vehicle is applied, the vertical struts 32, 33, 34
It is possible to prevent the occurrence of a bending moment in 34 as much as possible. Since the vehicle load is not applied to the brake rod 81 or the brake load link 82 that applies the moment MY about Y, the braking moment can be controlled with high accuracy. Also, the lateral rod 44
Since the protrusion 43, which is a connecting portion between the outer ring 38 and the outer ring 38, is arranged below the outer ring 38, it is possible to prevent the lateral rod 44 and the outer ring 38 from interfering with each other as much as possible.

Next, a modified example will be described. Inner ring 41 and brake load link 82 of the vehicle spindle load application device
The inner ring 41 can be made rotatable by releasing the connection with the inner ring 41. In this case, the spindle attached to the inner ring 41 is also rotatable. It is also possible to attach a rotation load device such as a dynamo to apply a low-speed rotation load to the spindle.

Further, as shown in FIG. 5, it is possible to replace the rotating body 36 of FIG. 4 with a rotating body 92 having a mounting surface 91. The rotating body 92 constitutes the spindle support device S, and the rotating body 36 shown in FIG.
Similarly, the lateral rods 44 are connected to receive the moment MZ about Z and the lateral force Y. Then, the tire 96 attached to the spindle is mounted on the mounting surface 91 of the rotating body 92. In this case, the vehicle spindle load applying device can apply a force of five degrees of freedom to the tire 96.

The front-rear driving device, the lateral driving device, the vertical movement driving device, the tilting driving device and the like do not necessarily have to be hydraulic cylinder devices. The structure of the spindle support device S can be changed as appropriate. The number of vertical struts should be at least 3 and may be 4 or more.

[0038]

According to the present invention, the spindle supporting device for supporting the vehicle spindle is rotatably attached to the upper tilting body, and the upper tilting body is provided with the three vertical struts and the lower tilting body. Since the parallel tilt is configured and the lower tilting body is tilted up and down and tilted, the steering moment can be applied to the vehicle spindle by rotating the spindle support device. At that time, a force that twists the upper tilting body with respect to the lower tilting body is not generated, and an unreasonable force is not applied to the vertical strut or the like, so that the steering angle can be made large. Also, due to the tilting of the lower tilting body, a camber moment is applied, and when the camber moment is applied,
It has almost no effect on the lateral force applied to the spindle.
Therefore, the camber moment and the lateral force can be accurately controlled. Further, the force in the front-back direction is applied to the upper tilting body, and it is possible to prevent bending moment from being applied to the vertical strut as much as possible.
Therefore, it is possible to prevent the vertical struts from being damaged such as buckling.

Since the braking moment can be applied to the spindle by rotating the spindle mounting body, a highly accurate control is performed as compared with the case where the vertical strut is differentially applied to apply the braking moment. be able to.

Further, since the synchronous link mechanism simultaneously drives the upper tilting body and the brake rod in synchronization with the driving of the front-rear direction driving device, the vertical strut is moved to the vertical strut when the upper tilting body is driven in the front-rear direction. It is possible to prevent as much as possible from affecting the applied braking moment.

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle spindle load applying device according to an embodiment of the present invention.

FIG. 2 is a front view of a main part of a vehicle spindle load applying device.

FIG. 3 is a side view of a main part of a vehicle spindle load applying device.

FIG. 4 is an explanatory diagram for explaining a braking moment and a load of force in a front-rear direction.

FIG. 5 is an explanatory diagram of a modified example of the vehicle spindle load applying device.

FIG. 6 is a perspective view of a conventional vehicle spindle load applying device.

[Explanation of symbols]

S Spindle support device 8 Hydraulic cylinder device (vertical drive device) 13 Lower tilt plate (lower tilt body) 21 Hydraulic cylinder device (tilt drive device) 31 Upper tilt plate (upper tilt body) 32 Vertical strut 33 Vertical strut 34 Vertical strut 36 Rotating body 41 Inner ring (spindle mounting body) 48 Hydraulic cylinder device (lateral drive device, rotational drive device) 62 Bell crank (synchronous link mechanism) 66 Hydraulic cylinder device (forward and backward drive device) 72 Brake bell Crank (synchronous link mechanism) 73 Link (synchronous link mechanism) 74 Link (synchronous link mechanism) 76 Hydraulic cylinder device (brake drive device, brake load device) 81 Brake rod (brake load device) 82 Brake load link (brake load device) ) 84 2nd link (brake load device) ) 91 mounting surface 92 rotating body 96 tire

Claims (6)

[Claims] 1. A vehicle spindle load applying apparatus for applying a load to a vehicle spindle, wherein a lower tilting body, an upper tilting body arranged substantially parallel to the lower tilting body, and an upper end of the tilting body swinging on the upper tilting body. Three vertical struts movably attached to the lower tilting body and swingably attached to the lower tilting body to form a parallel link together with the lower tilting body and the upper tilting body; and an axis line of the spindle. A front-rear direction driving device that drives the upper tilting body in a direction substantially vertical to and substantially horizontal to the upper tilting body, and is rotatably attached to the upper tilting body about an axis substantially vertical and supports the vehicle spindle. A spindle support device, a pair of lateral drive devices that drive the spindle support device in a direction substantially parallel to the axis of the spindle, and vertically move the lower tilting body. A vehicle spindle including an up-and-down drive device and a tilting drive device that tilts the lower tilting body about an axis in the front-rear direction, and the spindle support device is rotated by a differential between the pair of lateral drive devices. Load application device. 2. A vehicle spindle load-applying device for applying a load to a vehicle spindle, wherein a lower tilting body, an upper tilting body arranged substantially parallel to the lower tilting body, and an upper end swinging on the upper tilting body. Three vertical struts movably attached to the lower tilting body and swingably attached to the lower tilting body to form a parallel link together with the lower tilting body and the upper tilting body; and an axis line of the spindle. A front-rear direction driving device that drives the upper tilting body in a direction substantially vertical to and substantially horizontal to the upper tilting body, and is rotatably attached to the upper tilting body about an axis substantially vertical and supports the vehicle spindle. A spindle support device for rotating the spindle support device, a rotary drive device for rotating the spindle support device, a vertical drive device for vertically moving the lower tilting body, and a front and rear of the lower tilting body. Vehicle spindle load bearing apparatus characterized in that it comprises a tilting drive for tilting about the axis of the. 3. The spindle support device is rotatably mounted on the upper tilting body, and is rotatable about an axis attached to the rotary body and substantially parallel to the axis of the spindle. The vehicle spindle load applying device according to claim 1 or 2, further comprising a spindle mounting body. 4. The vehicle spindle load applying device according to claim 3, further comprising a brake applying device for applying a torque to the spindle mounting body. 5. The brake load device includes a brake load link, the brake load link having a center portion rotatably attached to the upper tilting body and one end having a spindle attachment body. And the other end is driven by a brake driving device via a brake rod, and when the front-rear driving device drives the upper tilting body, the brake rod is synchronized with the upper tilting body. 5. The vehicle spindle load applying device according to claim 4, further comprising: a synchronous link mechanism that is driven simultaneously by the above. 6. The spindle support device includes a rotating body rotatably attached to the upper tilting body, and a mounting surface provided on the upper side of the rotating body. The vehicle spindle load applying device according to claim 1 or 2, wherein a tire attached to the spindle is mounted.