JPS6311630Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a device for supporting a single vehicle body that is not suspended by a suspension device in a vehicle body vibration characteristic evaluation test.

(Prior Art) Conventionally, as a device for supporting an article via an elastic body, there is one disclosed in, for example, Japanese Unexamined Patent Publication No. 131890/1983. In addition, as a vibrating body support device,
For example, there is one described in Japanese Patent Application Laid-Open No. 59-42424. However, these support devices cannot be employed as vehicle body support devices.

Generally, a vibration characteristic evaluation test of a vehicle body is performed by placing an elastic body such as rubber or a tire on an installation surface, and placing the body alone on top of this elastic body.

(Problems to be Solved by the Invention) However, in the above-mentioned vehicle body support, the vehicle body is unstable and cannot be supported stably. Therefore, if the tester inadvertently touches the vehicle body,
The vehicle body may shake too much and slip off the elastic body. Furthermore, when the vehicle body is supported by elastic bodies such as rubber or tires, it tends not to be possible to support the vehicle body at a position where the suspension device is attached, which causes a problem in that it is difficult to carry out vibration characteristic evaluation tests of the vehicle body.

Furthermore, in evaluating the vibration characteristics of the vehicle body, it is especially important to evaluate the vibration characteristics of the skeletal system under the body. In this case, when the vehicle body is supported by the rubber of the elastic body or the tire tube, the elastic body gets in the way, and there is a problem in that sensors for measuring vibration characteristics cannot be precisely attached to the skeleton of the lower surface of the body.

Therefore, in this invention, the technical problem to be solved is to stably support the vehicle body locally.

(Means for Solving the Problems) The technical means for solving the above problems is to provide a device that supports a single vehicle body that is not suspended by a suspension device in a vehicle body vibration characteristic evaluation test. a support base fixed on an installation surface; a coil spring having one end fixed to the upper surface of the support base and elastically compressing the body in the vertical direction while supporting a predetermined position of the body; The main body is a support shaft inserted into the support base and screwed to the support base so as to be movable in the vertical direction.

(Function) According to the above configuration, the support base is fixed at a predetermined position on the installation surface, for example, at a position corresponding to the suspension device mounting surface of the vehicle body, and the center part of the coil spring is fixed to the support base. Raise the inserted support shaft by a predetermined length. Here, the vehicle body is placed on the coil spring of the support base with its suspension device mounting surface. Then, the coil spring is compressed by a predetermined amount, and the suspension device mounting surface of the vehicle body is abutted and supported by the upper end surface of the support shaft. In this state, the vehicle body is stably supported by the support shaft.

Thereafter, the support shaft is lowered relative to the support base so that a predetermined gap is created between the suspension device mounting surface of the vehicle body and the upper end surface of the support shaft. Then,
The vehicle body is supported only by coil springs. Under this condition, a vibration characteristic evaluation test of the vehicle body is performed.

In addition, during or before the above test, the shaking of the vehicle body that occurs when a worker accidentally comes into contact with the vehicle body can be prevented by the support shaft inserted in the center of the coil spring. This can be prevented by limiting deflection.

(Example) An example of this invention will be described below with reference to the drawings.

In the figure, 1 is a support stand fixed on the installation surface F, and its substrate 2 has mounting holes 2 for the installation surface F.
a is formed. Four pillars 3 to 3 are erected on the upper surface of the board 2, and a support plate 4 and an upper plate 5 are provided horizontally at the middle and upper ends of these pillars 3 to 3, respectively, as shown in FIG. It is fixed in shape. A nut 6 for a support shaft 10, which will be described later, is fixed to the center of the upper surface of the support plate 4.

Vehicle body alone (hereinafter referred to as vehicle body)
One end of the coil spring 7 that receives the coil spring B is fixed to the upper surface of the upper plate 5 of the support base 1 by a stopper 8 so as to be replaceable. A buffer member 9 made of synthetic resin, rubber, or the like having rubber elasticity is attached to the upper end of the coil spring 7 to suppress the surging phenomenon of the coil spring 7.

On the other hand, the nut 6 fixed to the support plate 4 of the support base 1
A support shaft 10 is screwed into the support shaft 10 so as to be movable in the vertical direction. The upper end of this support shaft 10 passes through the upper plate 5 of the support stand 1 and is inserted into the center of the coil spring 7, and the lower end passes through the support plate 4 and protrudes from the lower surface of this support plate 4. . A lock nut 11 is screwed into the lower end of the support shaft 10 to fasten the support shaft 10 to the support base 1 at any desired position.

In the above configuration, first, the coil spring 7 has a spring force corresponding to the weight of the vehicle body B.
is fixed at a predetermined position on the upper surface 5 of the support base 1 with a stopper 8, and the support base 1 is fixed at a predetermined position on the installation surface F (a total of 4 positions on the front, rear, left and right sides corresponding to the suspension device mounting surface B1 of the vehicle body B). (location).

Next, the vehicle body B
This vehicle body B is placed by aligning the suspension device mounting surface B1 of the vehicle body B. Then, the coil spring 7 is elastically compressed by a predetermined amount depending on the weight of the vehicle body B, as shown in FIG.

On the other hand, the support shaft 10 is adjusted to be moved in the vertical direction with respect to the support base 1 so that a predetermined gap is created between the suspension device mounting surface B1 of the vehicle body B and the upper end surface of the support shaft 10. This movement of the support shaft 10 is carried out by screwing the support shaft 10 forward and backward relative to the nut 6 of the support base 1 with the lock nut 11 loosened.

As mentioned above, a vibration characteristic evaluation test of vehicle body B is conducted with vehicle body B supported, but before, during, or after this test, the tester may accidentally come into contact with vehicle body B. In this case, the vehicle body B is stopped at a position where its suspension mounting surface B1 contacts the upper end surface of the support shaft 10, as shown in FIG.
The support shaft 10 can prevent the shaking with a slight amount of shaking.

Further, after the vibration characteristic evaluation test of the vehicle body B is completed or during preparation before the test, the support shaft 10 is moved upward by a predetermined amount to reduce the weight of the vehicle body B to the support shaft 10.
By directly receiving the coil spring 7 by the upper end surface, it is possible to prevent the coil spring 7 from buckling or deforming due to taking out the vehicle body B after the test is completed or placing the vehicle body B before the test.

Furthermore, in this embodiment, the coil spring 7
Since the buffer member 9 is attached to the upper end to receive the weight of the vehicle body B, the buffer member 9 can suppress the surging phenomenon of the coil spring 7 and also protect the vehicle body B. .

(Effects of the invention) As described above, according to this invention, the vehicle body can be locally and stably supported with support almost equivalent to that of a completed vehicle suspended by a suspension device. Vibration characteristic evaluation tests can be performed satisfactorily. Moreover, by adjusting the support shaft by moving it vertically relative to the support stand, the support shaft can prevent the shaking of the vehicle body that occurs when an operator accidentally touches the vehicle body during or before or after the above test. This can be actively prevented and is effective in terms of safety. Furthermore, by supporting the vehicle body locally, it becomes easy to arrange a predetermined number of sensors for measuring vibration characteristics at equal intervals according to standards on each part of the skeleton on the underside of the body. Evaluations can be made in detail.

[Brief explanation of drawings]

The drawing shows one embodiment of this invention.
Figure 2 is a perspective view showing the support device, Figure 2 is a side sectional view showing the state in which the vehicle body is supported, and Figure 3 is the side view showing the state in which the suspension mounting surface of the vehicle body is in contact with the upper end surface of the support shaft. FIG. 1...Support stand, 7...Coil spring, 10
...Support shaft, B...Vehicle body.

Claims (1)

[Scope of utility model registration request] In a vehicle body vibration characteristic evaluation test, a device that supports a single vehicle body that is not suspended by a suspension device includes a support stand fixed on the installation surface and one end attached to the top surface of the support stand. a fixed coil spring that supports a predetermined position of the body and is elastically compressed in the vertical direction; and a support shaft that is inserted into the center of the coil spring and is screwed to the support base so as to be movable in the vertical direction. A support device for a vehicle body, characterized in that it is constructed mainly of: