JP4206581B2 - Chassis dynamometer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chassis dynamometer provided with a slide-type caterpillar pit cover.
[0002]
[Prior art]
FIG. 4 is a schematic configuration diagram of a main part of a conventional chassis dynamometer, where 1 is a pit provided on the floor 2, 3 is a support base provided movably in the pit 1, and 4 is rotatable on the support base 3. The upper surface of the moving roller is flush with the floor 2. Reference numeral 5 denotes a fixed cover that covers the upper surface of the pit 1 and is fixed to the floor 2. The fixed cover 5 is provided with a movement hole 5a. 6 is a caterpillar type moving cover that moves in the moving hole 5a, a moving plate 7 having a roller hole 7a for exposing the upper surface of the moving roller 4, and a caterpillar portion 8 having one end connected to both ends thereof. The other end of each caterpillar portion 8 is fixed to the peripheral wall in the pit 1. The moving cover 6 is guided by a fixed rail (not shown). The fixed cover 5 and the moving cover 6 constitute a pit cover.
[0003]
In the above configuration, a dynamometer is connected to the moving roller 4, and driving wheels of the vehicle under test are placed on the moving roller 4. The driven wheel is placed on a fixed portion or a fixed roller (not shown). In such a state, the running test of the vehicle under test is performed, but when the wheel base of the vehicle under test is different, it is necessary to move the moving roller 4 in the front-rear direction of the vehicle under test as indicated by a two-dot chain line, for example is there. In this case, the moving plate 7 and the caterpillar portion 8 constituting the moving cover 6 are also moved together, and the caterpillar portion 8 is guided by a fixed rail (not shown) and stored in the pit 1.
[0004]
[Problems to be solved by the invention]
As described above, when the moving roller 4 is moved, one of the caterpillar portions 8 of the moving cover 6 needs to be drawn into the pit 1 so that the fixed end portion is wound around the center, but can be wound only about one turn at most. It was not possible, storage efficiency was bad, and a large storage space was required. Further, when a large storage space cannot be obtained, the moving stroke of the moving roller 4 cannot be increased.
[0005]
The present invention has been made to solve the above-described problems, and has good convergence efficiency when the caterpillar type moving cover is converged in the pit, does not require a large storage space, and moves the moving stroke of the moving roller. An object of the present invention is to obtain a chassis dynamometer that can be increased.
[0006]
[Means for Solving the Problems]
In the chassis dynamometer according to the present invention, two guide plates are erected on the bottom of the pit so as to oppose the moving direction of the moving roller, and a guide rod is erected between the guide plates. A guide roller is provided, and when the moving roller moves, the moving cover that covers the upper surface of the pit except for the upper surface of the moving roller is lowered along one guide plate in the pit, and then raised along the guide rod, After being guided along the guide roller, the space between the guide rod and the other guide plate is lowered and stored in a foldable manner.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a schematic configuration diagram of a main part of the chassis dynamometer according to this embodiment and a partially enlarged view thereof, and FIGS. 3A and 3B are a partial perspective view of a caterpillar part and an XX thereof. A line longitudinal section is shown. In the figure, 9 is a caterpillar type moving cover comprising a moving plate 7 having a roller hole 7a and a caterpillar portion 10 connected to both ends thereof. The moving cover 9 is moved in the same direction as the moving roller 4 by a fixed rail (not shown). It is free. Two guide plates 11, 12 are erected on the bottom 1 a of the pit 1 so as to face the moving direction of the moving roller 4 on both sides in the moving direction of the moving roller 4. A guide roller 14 is provided on the upper end of the guide rod 13. The caterpillar portion 10 includes a main portion 10a, a plurality of connecting portions 10b alternately fixed to adjacent main portions 10a, and a connecting shaft 10d penetrating through each through hole 10c formed in each connecting portion 10b. The main part 10a is configured to be rotatable on both sides.
[0008]
In the above configuration, when the moving roller 4 is moved to the right side in the pit 1 in FIG. 1, when the moving cover 9 is also moved to the right side, one of the caterpillar portions 10 comes off the fixed rail and descends into the pit 1. The caterpillar portion 10 descending into the pit 1 first descends along the guide plate 11, and when the front end abuts against the bottom 1 a of the pit 1, the main portion 10 a at the front end is rotated 90 degrees, and further to the guide rod 13. When it abuts, it further turns 90 degrees and rises along the guide bar 13. Eventually, the leading end 10a is guided by the guide roller 14 and rotated 90 degrees twice in the opposite direction to the above, and descends between the guide bar 13 and the guide plate 12. As a result, as shown in the figure, the caterpillar portion 10 of the moving cover 9 is accommodated in the pit 1 in a foldable manner. The same applies to the case where the moving roller 4 is moved to the opposite side, the moving cover 9 is also moved to the opposite side, and the caterpillar portion 10 is accommodated in the pit 1 in a foldable manner.
[0009]
In the above embodiment, the caterpillar portion 10 of the moving cover 9 is stored in the pit 1 in a foldable manner, so that the storage efficiency is good and the storage space can be reduced. For this reason, the moving stroke of the moving roller 4 can also be increased.
[0010]
【The invention's effect】
As described above, according to the present invention, the caterpillar type moving cover is housed in the pit in a foldable manner, so that the storing efficiency is good, the storing space can be reduced, and the moving stroke of the moving roller is increased. Can do.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a main part of a chassis dynamometer according to the present invention.
FIG. 2 is a partially enlarged view of FIG.
FIG. 3 is a partial perspective view of a caterpillar portion of a moving cover of the chassis dynamometer according to the present invention and a longitudinal sectional view taken along line XX.
FIG. 4 is a schematic configuration diagram of a main part of a conventional chassis dynamometer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Pit 4 ... Moving roller 5 ... Fixed cover 5a ... Moving hole 7 ... Moving plate 7a ... Roller hole 9 ... Moving cover 10 ... Caterpillar part 11, 12 ... Guide plate 13 ... Guide rod 14 ... Guide roller

Claims (1)

A moving roller on which the wheels of the vehicle under test are placed is provided in the pit so that the vehicle under test can move in the front-rear direction, and the caterpillar type moving cover that covers the upper surface of the pit by exposing the upper surface of the moving roller is the same as the moving roller In a chassis dynamometer provided so as to be movable in the direction, two guide plates are set up on the bottom of the pit so as to face the moving direction of the moving roller, and a guide rod is set up between the guide plates, and the upper end of the guide rod Is provided with a guide roller, and when the moving roller moves, the moving cover is lowered along one guide plate in the pit, then lifted along the guide rod, and guided along the guide roller. A chassis dynamometer characterized in that it is lowered between the guide rod and the other guide plate and stored in a foldable manner.

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