JPS58162835A - Structure for supporting chassis for chassis dynamometer - Google Patents

Abstract

PURPOSE:To reproduce the fluctuations in load in the stage of acceleration and deceleration during actual traveling, by placing the center of driving wheels on the vertical line running the center of a roll, supporting the end part on the opposite side freely turnably, and mounting the base line connecting the turning central point and the contact point of the roll at a prescribed angle. CONSTITUTION:A chassis dynamometer 20 is disposed with a roll 22 which is supported freely turnably under a floor surface 21. The driving wheels 11 of a chassis 10 are placed thereon, and the center 11a of the wheels 11 and the center 22a of the roll 22 are disposed on a vertical line P. An arm 13 is projected from the end part on the side of the chassis 10 opposite to the wheels 11; on the other hand, a supporting base 23 is erected from the surface 21, and the arm 13 is mounted freely turnably in the position of a proper height H. Therefore, a prescribed angle theta can be formed between the base line B connecting the turning central point (c) and the contact point A of the wheels 11 with the roll 22 and the surface 21. Thus, the reactions of the driving forces in the tangential direction of the driving wheels and the rotor acting in the stage of acceleration and deceleration act as the load in vertical directions.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support structure for a chassis in which paper is tempered by a chassis dynamo.

# as a chassis support structure for the Chassis Dynamo of Tomei! ■ - The Amano game was as shown in -. In other words, the drive wheels 4 of the chassis 3 are mounted on the rollers 2 of the chassis dynamometer 1, and the non-moving wheels 5 are fixedly supported in 7 directions by means of a fixed gear 6. , 1lIIJ&, shi'
r Sea 3 (Dim@EtUfkfmt '7 The ear lobes 8 etc. are used to support the front and rear original drawings 7 in the same way. In other words, the chassis 3i is 1 plus 1 in the horizontal force direction. sl] The center 4a of the stile 4 and the center 2a of the roller 2 are placed on the lead tuk), 1 missing steel chassis support structure. nLK multi'C is the reaction force of the main body force at the time of acceleration and deceleration thinly in the direction of the shaking force of the drive wheel 4 and roller 2, and in the direction of the force of the wholesale floor -7, and the reaction force of the chassis -3t- is fixed in the horizontal direction. Therefore, it acts only on the forward horizontal direction of the chassis 3, and when actually running on the road, the penetrating force of the strut body itself causes grain weight fluctuations during acceleration and deceleration to occur in the drive wheels.

For this reason, with the conventional chassis support structure, it is not possible to obtain the actual load change that acts on the drive wheels during acceleration and deceleration during driving, and the drive related to the force of the drive wheels. I had a hard time learning that I couldn't get the same IfMOIIF value for the performance as I did during the actual race.

In view of the shortcomings of the conventional art, the present invention provides a chassis support structure for a chassis dynamo that allows the drive wheels to generate upward and downward load firing motions that are substantially the same as when actually running on a chassis dynamo. It is important to do something. Its composition is 'L
L is the body - the center of the wheel passes through the center of the chassis dynamo roller, 1m long! 11L wrinkles are marked on the chassis, and the chassis is supported so as to be movable up and down on a support stand protruding from the floor, opposite to the drive wheels of the chassis, and the opening center point, the drive wheels, and the drive wheels are By making the base line connecting one point of the low roller form a contraction angle with respect to the horizontal, the reaction force of the dynamic force in one direction between the seven driving wheels and the rotor that acts during acceleration and deceleration can be adjusted to the driving wheel. It acts as a load in the upward and downward directions, and the upward and downward changes in the upward and downward directions are caused by the force acting on the drive force during acceleration and deceleration during actual driving. and 1WJvI
k, and the charader 1 also controls the drive wheel's
The difference between the performance of the 11m1, which is related to power, is the actual driving time and the comfort of sitting in the west.

Hereinafter, a humorous example of the present invention will be explained in detail based on the diagram.

In FIG. 2, IO is a chassis using an actual vehicle, and in this embodiment, the company line chassis IO is 1, and the front wheels of the island car are the drive wheels 11. It should be noted that the later part has been removed. 20H chassis dynamo, horizontal floor surface 21
Nine rollers 4 are disposed rotatably supported by the rollers, and the cough p
- The upper M part of the roller B is exposed from the riser WIJ 21, and the upper end of the roller & and the floor surface are arranged so that they are flush with each other. Then, the chassis-1 is placed on the roller n.
The drive wheel 111 of O is mounted, and the center 11 &
and the center 22& of #10-r n are arranged approximately on the vertical line P. In this embodiment, when supporting the #J chassis 1O, the arm 131 is centrally protruded from the end opposite to the drive wheel 11 of the chassis 1O, and the arm 131 is protruded from the center of the rear end of the chassis 1O. A support stand 11 is erected, and the arm 13t of the support stand is attached to the position H so that oil can freely move. Therefore, a predetermined angle f# is formed with respect to the horizontal line trench direction 21 that connects this rotation center point C and the n-class point of the roller of the driving wheel 11. ing. This angle θ is the distance between the rear wheels and the road l in the actual vehicle to be tested.
Due to his relationship with Arashishin ^, he is given medical treatment.

That is, this relationship: 1gj center of motion 0 of the chassis 1O
Moment of web and imitation wheel latitude of the actual vehicle in the fallen material
By comparing the moment of point i1 with the moment of IIA, the next rectangle 6 is obtained. Considering the moment at the rotation center point 0 and 9 of the chassis-IO, N: dynamic front wheel load JL, jl
a: Silent Sharpener, W Nijiashi-10] i quantity, L:
Horizontal distance between H dynamic center point C and drive wheel 11, La: 1
am, F between g1 dynamic center point C and k7L/ () action-
: Reaction force of driving force, H: (iwHeight of dynamic center point C from original image 4, W@LIL −ylla −N, I, = 0 −(1
1 is derived, and this (Type 11, Natsu・Ltomi−y・H+W・IIIL−(21).

Also, considering the moment in a stationary state, W −
La g Ha “L・” (31 relationships are up,
Substituting this equation (31) into equation (2), we get M --F -1-Na, that is, N-111・F+Na-(5).

On the other hand, considering the moment of the rear wheel (non-driving wheel) 310 - grounding point of the rear wheel (non-driving wheel) 310 when traveling on the road according to diagram #13, R: tIIJ's 薊 - cart reaction force, R1:
Static*tym load 1 reaction force, W: 1 vehicle, t: front and rear wheels open - 1h: center of gravity G, α: acceleration, then R, tW-ash+Ra*t -・-・---- ---
(61F;-α ...-...song (7) These (6), (7) sell R,1--F-h-)Ra- from the people, R=--F-)- Ra...(8)
is guided.

, and compare this equation (8) with the above equation (5).

For example, if you are going to test a real vehicle with a load height h = 510 sm, a quiet wheel load IRa-655 edge, and a single distance t = 2470 sm, the chassis will have a width of more than 10 mm. In the case where the drive wheel 11 rotates once at a constant number of revolutions during constant speed operation during actual driving, the above-mentioned IKIIIll and the roller ρ that rotates once in the opposite direction by this drive wheel lIK. In between, there is no reaction force to the driving force. Next, when changing the #IrIe drive wheel 1 drive rotational speed, that is, when accelerating and decelerating during actual driving, the drive wheel 11 and the inertia force are used to maintain a constant 1 rotation speed. A reciprocal force of the driving force is generated between the roller n and the roller n. In the illustrated case, the reaction force F of this driving force is at the time of acceleration and is directed toward the front.

Then, the reaction force F of the driving force acts so as to lift the ridgeline 11 upward. Incidentally, when the driving force 0 and the reaction force r are decelerated, electrodynamics #jk and #1 which try to push down the sliding motion -11 act in the opposite direction. Further, the magnitude of the force that tries to push the drive wheels 11 upward or downward is proportional to the magnitude of the acceleration.

The value can be determined by appropriately setting the angle #' of base 1iIIIB, that is, by setting the strength of the rotation fulcrum H4C that is suitable for the chassis 10 to be tested. The driving wheels 11 of the vehicle can have a shape that is the same as if the actual vehicle were subjected to electric fluctuations in the direction of (-, up, ) when the vehicle accelerates and reaches g during actual driving. Actually, the chassis 1O [even with the addition of a chassis dynamo that does not extend the running time, the chassis 111 is almost the same as when actually running,
Since the odor fluctuation between the lower parts is suppressed, the l of the drive-11
Due to I# power, dynamic performance can be estimated almost faithfully, and more complete test results can be obtained.

In addition, in this embodiment, the chassis 1O1 is supported via an arm 13 on the chassis 1O1 so as to be movable up and down.
The behavior of the chassis 1O is not unnaturally restrained compared to the conventional case where the chassis 3 is entirely fixed using the fixing device 6, wire rope 8, etc.

Furthermore, in this embodiment, by mounting the rotating parts of the O chassis 10 such as the arm 13 and the support platform with sufficient rigidity, the tire part of the non-driving wheel 5 can be mounted with sufficient rigidity. Compared to incomplete identification means such as fixing the chassis or using the wire rope 8, the chassis can be sufficiently moved in the left and right direction, so the drive wheels 11 can move around the rollers 22 during operation. It is possible to prevent it from shifting.

Side-4! ! An example of 4 rL% is shown, and a 40t chassis is used in an actual vehicle. Wholesale, this chassis 40#';L support stand 41 K ilbSHaThThe base 42 is mounted so that it can freely move up and down (F) and (B).
A drive system to be mounted on an actual vehicle is mounted on this base 42, and a suspension device 44 for a drive III 43 and this drive IIM 43 are provided. As a result, the front drive shaft is rotated by a power train device (not shown). Also, on the base 42, there is an I? Some plates are set with weights 45 or 8Il11c to act on the 11th drive-kudzu. By the way, in this embodiment, the eyepiece 1 is also arranged on the vertical line P such as the center 43a of the drive 43 and the center 22'a of the roller n, and the rotation center point Ca of the II arrangement 4!42 and the drive - 43
Roller 2 image point M1 and r unit &I42 are on the floor 21K
On the other hand, it is obvious that the shortening angle gl is shaped like a paper. Therefore, in this actual example, the same effect as the above-mentioned embodiments is obtained, and in addition, the same motion center point Oa is provided for one chassis 42.
4I) and Waite 451 Lid * 1 Hen's history allows Honnai to experience passion, and each time the collection is single and f:
The driving force of the driving wheel without lewdness K and the driving nature I
I@i? It also has the effect of being able to offer advice.

More than 1G! According to H, the support is placed on the vertical edge passing through the center of the drive wheel or the center of the roller of the chassis dynamo, and the support is collected from the negative end of the IiJ arrangement of the chassis and the opposite negative end of the stile. It is supported so that it can move freely in the upper direction on the stand, and the center point of the picture sea bream, the roller crease point of the drive wheel, and the [pongee base] are attached in a horizontal position, so that On the chassis dynamo, #1 poor movement, which is the same as the cart fluctuation that occurs when accelerating and decelerating during actual driving, can be reset, so th can obtain the same drive performance value as during actual driving. I can do it.

4. Axial surface that prevents the support structure of the chassis for the chassis dynamo of 11mtx tentative 4. Figure 2 shows one implementation of the support structure of the chassis for the chassis dynamo of this helmet. Figure 1, 3rd diagram showing an example
The figure shows the effect of the sword on the inside of a truck during a roadside hit. The first and fourth readings show the implementation of the present invention? IJk)F
I'm in trouble.

1.2LJ... Chassis dynamo, 2. η...Roller, 3, 10, 44j.../Yashi 14, 11
,43...Drive wheel, 7°21-...Floor surface, Z(,41
...Support stand, o e oa-1atm center point, Mu, Mu a--roller contact of drive wheel, B... Base-1P-/Vertical-0

Claims (1)

[Claims] (1) Place the driving wheels of an actual vehicle or a chassis equivalent to an actual vehicle on the roller of a chassis dynamo so that the center of the roller and the center of the secondary wheel are vertically aligned. At the same time, on the opposite side of the drive wheel of the chassis, the persimmon is held on a support stand vacant from the floor space so that it can move up and down, and this rotational pressure point Ib and the yL
Wheel〇＾il The V roller contact and the t-axis base form a good angle with respect to the horizontal. Chassis with 1% image - Chassis for Dyna cage - 3t Wt II ffi
0