JPH0443802Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to a chassis dynamometer that performs tests in a manner closer to actual driving conditions by tilting the pit cover on which the vehicle body rests.

B. Summary of the invention The invention makes it possible to tilt at least the part of the pit cover on which the vehicle body rests about a fulcrum point corresponding to the position of the roller that contacts the drive wheels of the vehicle, directly above the center of the roller when viewed from the side. The present invention relates to a chassis dynamometer that allows tests to be performed in a manner closer to actual driving conditions such as driving on a slope.

C. Prior Art Conventionally, chassis dynamometers have only been tested on a flat surface, but have not been tested with the vehicle body tilted. Therefore, in the case of hill running tests, etc., conventionally only the flywheel was adjusted and tested, but the state of liquids such as oil and gasoline remained in a flat state.

D. Problems to be solved by the invention Therefore, there was a problem in that it was not possible to actually perform a test by tilting the vehicle body as a test based on the various changes that occur when driving on a slope.

The present invention was developed in view of the current situation, and the purpose is to provide a chassis dynamometer that can perform tests by actually tilting the vehicle body as a test based on the various changes associated with driving on a slope. .

E. Means for Solving the Problems In order to achieve the above object, the configuration of the present invention is such that at least the portion of the pit cover on which the vehicle body rides, when viewed from the side, the rollers are in contact with the drive wheels directly above the center of the rollers. It is characterized by being able to tilt around a position corresponding to the vicinity of the position as a fulcrum.

F Effect With the above configuration, the vehicle body can be tilted up and down, and tests can be easily performed in a manner similar to actual driving conditions.

G. Embodiment Hereinafter, an embodiment of the present invention will be described with reference to FIG. 1, which is a side view of a tilting table up/down device, FIG. 2, which is a plan view of the tilting table, FIG. 3, which is a side view of the tilting table, and FIG. FIG. 4 is a side view of FIG. 4; FIG. 5 is a rear view of FIG. 4; FIG. 6 is a side view for explaining the action of the duct of the cooling fan; and FIG. Figure 7 and 7th
The description will be made based on FIG. 8, which is a front view of the figure, and FIG. 9, which is a side view of FIG. 7.

In Figures 1 to 9, the motor (not shown)
When pulley 1 is rotated by belt drive from
The screw screw shafts 2 and 3 rotate, and the horizontal bar 4 screwed onto the screw screw shafts 2 and 3 moves up and down.
A tilting table 5 attached to the holder moves up and down. When viewed from the side, this vertical movement of the inclined table 5 is caused by the rollers 6,
The tilting is performed using a fulcrum 8 (see FIG. 3) at a position corresponding to the vicinity of the position of the rollers 6 and 7 that contact the drive wheels (rear wheels) directly above the center of the wheel 7. Here, the tilt angle of the tilt table 5 is approximately 15 degrees both above and below, but by changing the length and mounting position of the screw screw shafts 2 and 3.
It is possible to set the temperature to 15 degrees or more.

Since the blowout duct 10 of the cooling fan 9 also needs to move up and down based on the tilting of the tilting table 5, a bellows duct 11 is used to connect the cooling fan 9 and the blowout duct 10 in this embodiment. The bellows duct 11 not only expands and contracts vertically, but also can accommodate left-right and front-back deformations due to changes in wind direction.

A belt 12 is used as a means for fixing the driven wheel (front wheel), and the belt 12 is configured to tighten the driven wheel with a ratchet spanner 14 using a ratchet mechanism 13.

H. Effects of the invention As described above, according to the invention, tests can be easily performed in a manner similar to actual driving conditions, even when driving on a slope. Furthermore, if a variable speed motor is used as the drive motor that controls the forward and reverse rotation of the screw shaft that raises and lowers the ramp, the running condition can be controlled to match the undulations of the road surface.

[Brief explanation of the drawing]

Figures 1 to 9 show one embodiment of the present invention, in which Figure 1 is a side view of the tilting table up/down device, and Figure 2
The figure is a plan view of the ramp, Figure 3 is a side view of Figure 2,
Fig. 4 is a side view of the cooling fan, Fig. 5 is a rear view of Fig. 4, Fig. 6 is a side view for explaining the action of the cooling fan duct, and Fig. 7 is a plan view of the driven wheel fixing means. , Figure 8 is a front view of Figure 7, Figure 9 is a front view of Figure 7.
FIG. In addition, with the symbols in the figure, 1 is a pulley, 2 and 3 are screw shafts, 5 is an inclined table, 6 and 7 are rollers, and 8
is a fulcrum, 9 is a cooling fan, and 11 is a bellows duct.

Claims (1)

[Scope of utility model registration request] At least the part of the pit cover where the car body rests,
A chassis dynamometer characterized in that, when viewed from the side, the chassis dynamometer is capable of tilting with a fulcrum at a position corresponding to the position of the roller that contacts the drive wheel directly above the center of the roller.