JP2016121976A - Testing stage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable minor enterprises with insufficient financial resources, which enter development and production of electric vehicles due to low cost motors and batteries being developed, to introduce extremely expensive on-stage testing facilities and develop highly reliable products.SOLUTION: An engine for a motorcycle is linked with a roller on which drive wheels are mounted.SELECTED DRAWING: Figure 1

Description

The present invention relates to an inexpensive and simple test apparatus that performs a durability test or the like on a table when developing a vehicle or personal vehicle that travels using wheels.

In recent years, high-performance motors and batteries have been developed, and with the growing awareness of energy saving, many small and electric vehicles, vehicles for indoor movement, and self-propelled devices for the disabled have been developed. It is coming.
Also, especially in the case of electric vehicles, unlike vehicles that use engines, there are no parts such as intake systems, exhaust systems, and lubrication systems, and the structure is simple. Have entered into manufacturing.
However, although it is possible to make a vehicle, it is not possible to carry out an endurance test that assumes actual driving, and especially for vehicles that are supposed to run on public roads, the driving test cannot be carried out without obtaining a number. It was. In addition, in order to add resistance to the drive wheels and perform an endurance test at a load suitable for actual driving, a complicated and expensive device was required to absorb the generated heat energy.

None.

There is a need for low-cost bench test equipment that can be purchased in small town factories, and the test equipment must meet all of the following requirements:
That is, it is an object of the present invention to completely solve all the following requirements.
1. A vehicle or the like is actually driven and a predetermined load is applied to the drive wheels.
2. The load applied to the drive wheels can be varied freely and easily.
3. The load applied to the drive wheels can be finely adjusted.
4. The heat energy generated by the test with a load applied to the drive wheels can be absorbed reliably.
5. The durability of the device that absorbs heat energy is extremely high.
6. A device that absorbs heat energy is extremely inexpensive and has a guaranteed durability.
7. Be compatible with motorcycles and automobiles.
8. Capable of handling vehicles with different wheelbases and treads.
9. The load can be made small enough for humans to drive.
10. It can be used as a training machine for humans and animals.
11. The measurement of the rotation speed and torque can be easily performed.
12. Have a power generator.
13. The device that absorbs heat energy must have a self-lubricating function and a self-cooling function.
14. The non-drive wheels of the vehicle can be driven from the outside.
15. Steering system durability test is possible.
16. Able to take out rotational torque freely and drive another device.
17. Air pressure for using air tools can be obtained during testing.

In order to solve the problem, one or a plurality of configurations described in any one of claims 1 to 6 of the present invention are selected and adopted. The contents generally indicate the following configuration.
1. Prepare a test apparatus equipped with a roller on which driving wheels such as a vehicle are placed.
2. The rotation of the roller is transmitted to the motorcycle drive shaft through the chain.
3. The engine is used as a device that applies a load and absorbs heat energy.
4. Adjust the load steplessly by shift change and cylinder sealing degree adjustment.

If a plurality of configurations according to any one of claims 1 to 6 of the present invention are employed, all the above-mentioned problems can be solved completely.
Engines for motorcycles, in particular, can be obtained at a very low price or free of charge if used or accidental vehicles are used, including generators, radiators and cooling electric fans. Because it is included, it is extremely convenient as a device for durability testing.
Also, if the engine is marketed by a major manufacturer, the durability is guaranteed and the functions required for the test equipment are unitized, so it can be used simply by connecting with a chain. Can be said to be extremely simple.

  The front view of this invention is represented.   The top view of this invention is represented.

Embodiments and configurations for implementing the present invention and solving the problems are as detailed in claims 1 to 6, and any one or a plurality of them may be selected. An example of the configuration will be described with reference to the drawings.

FIG. 1 is a front view of the present invention, and FIG. 2 is a plan view of the apparatus viewed from above. Two, three, and four rollers are rotatably held on a frame 1 that is a main body of the apparatus via respective rotation shafts 6, 7, and 8. On top of this, although not shown in the figure, the motorcycle to be tested is placed with the left as the direction of travel. The rear wheel 5 which is a driving wheel of a motorcycle contacts the roller as shown, and the front wheel which is a non-driving wheel also contacts the roller 4 as shown.
In this state, if power traveling is performed as if it were actual traveling, the driving wheel 5 rotates the roller 2, and the sprocket 19 attached to the rotating shaft 6 drives the sprocket 11 of the engine 10 via the chain 16. .
With the above apparatus, the engine 10 applies a predetermined load to the rear wheel of the motorcycle as the test vehicle, and the absorbed energy can be efficiently dissipated from the engine main body into the atmosphere.
In the drawing, the water cooling system is omitted, and an air cooling system is shown. However, if a commercially available water cooling system for a motorcycle is used as it is, an inexpensive and efficient and stable cooling effect can be obtained. Further, the roller 4 may be provided with a plurality of rollers, similarly to the driving wheel roller.

13 in the figure is a change lever with a grip attached to the shift shaft 12 of the engine. In a normal motorcycle, a pedal for performing a shifting operation with a foot is attached to the shift shaft 12, but instead, a shift lever is provided so that a gear can be manually shifted, that is, a gear change. it can. In addition, a normal motorcycle equipped with a manual clutch and a multi-gear type transmission is configured such that the clutch lever attached to the handle is gripped with the left hand and the change pedal is operated with the left foot to change the gear. If the clutch lever is attached to the part, the change lever can be swung while holding the clutch lever, and the gear can be changed with only one hand.
Since the clutch lever is usually attached to a pipe handle via a lever holder, the clutch lever can be attached very easily if the change lever 13 is made of a pipe or bar having the same outer diameter as the handle. I can do things.

15 in the figure is a pressure adjusting screw attached in place of the spark plug attached to the head of the cylinder 14. When a driving force is applied to the sprocket 11, a resistance force is generated by the crankshaft repeatedly compressing and releasing gas in the cylinder. By rotating this screw, the inside of the cylinder and the atmosphere pass through a slight gap. Because the degree of communication and sealing can be adjusted, the magnitude of the resistance can be continuously varied. Furthermore, in the case of a multi-cylinder engine, the resistance can be made very small by removing one or more pressure adjusting screws.

In general motorcycles, the rotation of the front wheels, which are non-drive wheels, is transmitted to the meter with a wire, and the travel distance and travel speed are displayed. Therefore, if the sprocket 20 provided on the rotating shaft 6 transmits the rotation to the sprocket 21 via the chain 17 and the roller 4 is rotated, the front wheel 9 which is a non-driven wheel can be rotated. As a result, the total travel distance of the vehicle can be easily grasped.
In addition, since an ordinary motorcycle engine is equipped with a generator and constantly generates power by rotating the crankshaft, surplus power can be used to turn on the blower and lighting.

The configurations of FIGS. 1 and 2 are optimal for vehicles that run on wheels, but cannot be used by biped robots or humans. Therefore, if a rubber endless track is attached to the roller 2 and the roller 4, a person can walk on the endless track, which is extremely convenient.
In addition, a general bench test apparatus requires a dedicated room for installation, and is a facility rather than an apparatus. In addition, equipment used for evaluation of motorcycles and private cars receives energy of several hundred horsepower, so it cannot handle extremely light loads, and it is necessary to rotate the roller with human power less than 0.5 horsepower. I can't. However, according to the present invention, for example, if an engine for a bicycle with a motor with a displacement of 50 cc is used, the pressure adjusting screw 15 is removed, and the number of teeth of the sprocket 19 is reduced, an extremely light load can be applied. In other words, it is possible to perform bench tests in a very wide range from humans to automobiles.

By using the engine, you can get a wide variety of advantages. Since rotating the crankshaft to move the piston in the cylinder up and down is the same as operating the compressor, a predetermined pressure can be obtained continuously. If this pressure is stored in the surge tank, the air tool can be used, and if it is connected to a pneumatic motor, that is, a steam engine, a predetermined driving force can be obtained, and tests such as swinging the steering system can be performed. Can be used.

If one or a plurality of configurations according to any one of claims 1 to 6 of the present invention are selected and adopted, all of the above-mentioned problems can be solved, and the extremely high functionality and high Quality products can be marketed at extremely low prices, and can be widely spread to small and medium-sized companies and town factories where bench test equipment could not be introduced due to lack of funds.

1. A test apparatus main body, which is a plate-shaped frame.
2. Roller that contacts the driving wheel 3. Roller 4 that contacts the driving wheel. Roller 5 that contacts the non-driving wheel. Driving wheel of the vehicle (the vehicle body is omitted).
6. Rotating shaft that transmits the rotation of the roller to the engine 7. Rotating shaft that supports the roller 8. Rotating shaft that supports the roller 9. Non-drive wheels of the vehicle (vehicle body omitted)
10, a motorcycle engine 11, a sprocket 12 attached to the output of the engine, a shift shaft 13 of the engine, a shift shaft 14 with a grip attached to the tip, a cylinder 15 and a pressure installed in the spark plug attachment hole Adjustment screw 16, chain 17 for transmitting driving force to the engine, chain 18 for transmitting driving force to the non-driven wheel roller, engine mounting stay 19, sprocket 20 attached to the rotating shaft, sprocket 21 attached to the rotating shaft, Installed sprocket

Claims (6)

In a bench test apparatus equipped with a roller that travels on wheels and that has a drive wheel of a vehicle or a mobile device, and that is in contact with the drive wheel and rotated by friction with the drive wheel, either of the following or any of the following: A test bench with multiple features.
1. The roller was supported by a bearing so that it could rotate smoothly.
2. A device for providing resistance to rotation of the roller was provided.
3. A device for applying resistance was a brake device. The brake device refers to a device that presses a shoe, a pad, a belt or the like against a rotating portion and brakes rotation of the roller by friction.
4. The device that gives resistance was a device that brakes rotation of the roller by air resistance. Note that the braking device based on air resistance refers to a device that rotates a device that stirs air such as a propeller or a windmill in the air.
5. The device for giving resistance was a device for braking the rotation of the roller by fluid resistance. The fluid resistance braking device refers to a device that rotates a liquid stirring device such as a propeller or a water wheel in the liquid, and includes a torque converter and a fluid coupling.
6. The device that gives resistance was a device that brakes rotation of the roller by compression and expansion. Note that the compression / expansion braking device refers to a device that gives resistance to the rotation of the roller by reciprocating the piston in a substantially sealed cylinder. When using a double-acting air compressor or rotary compressor Including.
7. A device for giving the above resistance is set so that the resistance value or the magnitude of the braking torque can be varied.
8. A speed reducer or speed increasing device was provided between the roller and the device for applying resistance. The speed increasing / decreasing method is any one of a gear, a chain, a belt, and a torque converter.
9. A transmission was provided between the roller and the device for applying resistance. The speed change method is any one of a gear, a chain, and a belt.
10. Two or more rollers were used, and the apparatus was arranged such that a plurality of rollers were in contact with the drive wheels.
11. When a vehicle or the like has a drive wheel and a non-drive wheel, a roller for placing the non-drive wheel is installed, and a roller for the drive wheel and a roller for the non-drive wheel are connected to a chain, a belt, or a gear. Or via a shaft, the rotation of the drive wheel can be transmitted to the non-drive wheel. In addition, the structure which provided the brake or the locking mechanism in the roller for non-driving wheels, and was able to regulate free rotation, and the structure which used two or more rollers for non-driving wheels are also included.
12. A plurality or a plurality of sets of rollers for driving wheels are connected and connected in the above-described configuration 11, so that a predetermined traveling resistance is also applied to a vehicle driven by both front and rear wheels.
13. A means for fixing the vehicle or the like to the test apparatus was provided. The fixing means is a device for preventing the risk of the vehicle unexpectedly jumping out when a driving force is applied to the roller, such as a wire, a belt, a fastening member, a joint, a fixing plate, a hook, a wheel stopper, a vise. The device which controls movement of vehicles etc. to the test stand of the present invention is used.
14. A device for giving resistance is provided on one side of the roller in the axial direction, the length of the roller is freely extendable, and even when the drive wheels are two left and right wheels, all the drive wheels can be brought into contact with the rollers, and It can be used for vehicles with different treads. The length of the roller can be expanded and contracted by configuring the roller inside / outside, etc., by spline fitting, and rotating integrally even if it expands and contracts, or by connecting multiple rollers with a rotation shaft. In the same way, it can be expanded or contracted, and the rotation shaft can be added. Instead of spline fitting, the key, set screw, band, fastening member, pin, or clip can be used to rotate together. Also includes a possible device configuration.
15. The device for giving resistance is a separate unit, and the unit and the rotating shaft of the roller are connected by a gear, a chain, a shaft, a belt, or a torque converter, and a driving force is transmitted. Equipment was made possible.
16. The roller surface was roughened, or fine irregularities were provided on the roller surface, or rubber or resin was attached to the roller surface, or an asphalt sheet was attached.
17. A drive shaft such as a vehicle or a vehicle main body and a test stand are connected to each other with a belt, a wire, or an elastic member so that the drive wheel can be pressed against a roller. In addition, the structure provided with locking devices, such as a hook, for attaching a belt and an elastic member in the predetermined position of a test stand is also included.
18. An auxiliary wheel having a substantially vertical rotating shaft is installed on the left and right sides or one side of the driving wheel at the upper part of the roller, and the driving wheel can be prevented from falling off in the axial direction of the roller. The auxiliary wheel includes a simple configuration in which a pipe is covered with a pipe material.
19. A resin plate or guide is provided on the left and right sides or one side of the drive wheel at the upper part of the roller so that the drive wheel can be prevented from falling off in the axial direction of the roller.
20, The roller was formed into a drum shape with a small diameter at the center, or provided with flange portions at both left and right ends of the roller.
21. On the outer periphery of the roller, one or a plurality of protrusions were provided on the portion that abuts the drive wheel, so that a test that assumed running on a rough road was possible. In addition, the protrusion is configured to be integrally formed with the roller or configured to be detachable from the roller with a fastening member.
22. A lock mechanism for fixing the rotation of each roller when the vehicle was put on and lowered from the test apparatus was installed. The lock device regulates the relative movement between the rotating part and the device body by inserting pins from the main body on both sides into the hole provided on the end face of the roller, and physically rotates the roller. It refers to a device that blocks or restricts movement by friction.
23. A stand slightly lower than the upper surface position of the roller is installed between the roller for driving wheel and the roller for non-driving wheel, and each wheel can run on the stand when the vehicle is put on and off. Was installed.
24. An inclined plate for placing the non-drive wheel and the drive wheel on the roller was provided. In addition, the structure which provided the level | step difference, protrusion, rib, hook, recessed part, stick | rod, through-hole, etc. for installing a board in the edge part of a main body, and the structure which connected the board with the hinge and were made foldable are included. The test stand according to claim 1, wherein a separate unit, which is a device that provides resistance, is a motorcycle engine. In addition, the engine for motorcycles refers to an engine having at least the following characteristics, and any use or purpose is possible as long as the engine has all the following characteristics.
1, single cylinder or 2 cylinders, 3 cylinders, 4 cylinders, 5 cylinders, or 6 cylinders.
2. In the case of multiple cylinders, the cylinder arrangement is parallel, V-shaped, horizontally opposed, or vertically placed.
3. The crankcase and each cylinder are integrated, and the crankcase is equipped with a manual clutch and transmission, and the gear ratio to be used can be changed and the acceleration / deceleration ratio can be changed by a predetermined speed change operation. .
4. The output shaft is provided with a chain drive sprocket or a belt drive pulley.
5. The engine is a 4-cycle engine. However, this includes cases where 2-cycle engines and rotary engines are used.
6. A generator is provided in the crankcase, and a 12 volt DC power source is obtained. The generator includes a separate configuration.
7. An oil pump is provided in the crankcase, and internal engine oil can be pumped to each part. In the case of a two-cycle engine, a configuration without an oil pump is also included.
8. The piston moves up and down by the rotation of the crankshaft, and the intake stroke and the exhaust stroke are repeated.
9. Water cooling, air cooling, or oil cooling.
10. A spark plug for ignition is provided. The test stand according to claim 2, wherein the resistance applied to the roller is configured to be changeable / adjustable by any one of the following or any of a plurality of configurations.
1. A pressure adjusting screw was attached to the spark plug attaching portion of the cylinder head, and the degree of sealing in the cylinder was adjustable by tightening and loosening the screw. Note that the pressure adjusting screw provides a through hole or slit in the threaded portion, or a taper screw, so that the inside of the cylinder and the outside air are slightly communicated, and the cross-sectional area of the communicating portion is continuously or stepwise. This includes a configuration that is provided with a knob portion that can be manually rotated without using a tool such as a thumbscrew.
2. A removable plug, plug, or male screw part is attached to the spark plug attachment portion of the cylinder head so that the number of cylinders that obtain compression resistance and the cylinders that are not compressed by opening to the atmosphere can be varied.
3. Install a box with a predetermined capacity in the intake section and seal it roughly, and attach a lid that can be opened or closed, or the above-mentioned pressure adjusting screw, or both, to seal the inside of the box. The degree was adjusted in the same manner as the above-described configuration.
4. Install a box with a predetermined capacity in the exhaust part and seal it approximately, and attach a lid that can be opened or closed, or the above-mentioned pressure adjusting screw, or both to a part of the box, and seal the inside of the box. The degree was adjusted in the same manner as the above-described configuration.
5. In the configuration of 3 or 4 described above, a box is provided independently for each cylinder, or a box is provided for each of a plurality of cylinders.
6. In place of the pedal, a change lever for performing a gear change operation by hand was attached to the shift pedal attaching portion, that is, the serration fitting portion at the tip of the shift shaft. Note that the swinging fulcrum of the change lever includes not only the case where it is directly attached to the shift shaft but also the case where the swinging fulcrum of the change lever is installed at another position via a link mechanism as in a commercially available motorcycle. Moreover, the structure which provided the lever movable range control apparatus for preventing the failure | damage of each part when a load more than fixed is applied to a lever is also included.
7. A rubber or resin grip was installed on the part of the change lever to be gripped by hand.
8. A clutch lever was installed on the above-described change lever, and the clutch lever and the clutch portion of the engine were connected by a clutch wire. In other words, it refers to the configuration in which the position of the clutch lever of the motorcycle is moved from the left side of the handle to the change lever, and in the same way as a general motorcycle, a configuration in which the clutch is intermittently operated using hydraulic pressure instead of a wire. Including.
9. The part where the engine body is attached to the test stand using fastening parts such as bolts and nuts can be adjusted in the fixed position by installing a long hole or a plurality of mounting holes. The slack can be adjusted.
10. A tensioner was installed to keep the chain and belt tension constant.
11. A plurality of engines having different displacements, number of cylinders, cylinder arrangement, or different cooling methods were installed interchangeably.
12. The intake pipe and the exhaust pipe were connected by a pipe or a hose, or the box attached to the intake part and the box provided in the exhaust part were connected by a pipe or a hose. In addition, the structure which provided the on-off valve in the middle of the pipe etc. to connect is also included. The test stand according to claim 2 or claim 3, which has any one or more of the following features.
1. The engine was water-cooled, a radiator was attached to the engine body or a test stand, and the heat generated from the engine was dissipated from the radiator. Note that the radiator includes a configuration with an electric fan and a temperature sensor, as well as a radiator of a commercially available motorcycle, and includes a configuration in which the electric fan is automatically turned on and off with the electric power generated by the rotation of the crank.
2. A cooling water piping cock and a branch pipe were attached to a cooling water piping system circulating between the engine body and the radiator so that the cooling water could be circulated to devices other than the radiator. In addition, the structure which abolished a radiator and circulated cooling water only to other apparatuses is also included.
3. A socket or outlet that can use the power generated by the generator externally was installed. In addition, since the electric power obtained by power generation is 12V DC, it is converted into a 100V household power source via an inverter and includes a configuration in which an outlet that can use household electrical equipment is installed.
4. If the engine body is equipped with a tachometer take-out, that is, a device for taking out the engine revolutions per minute electrically or mechanically, attach a tachometer to the test stand and test the engine The device was installed so that the number of rotations could be easily grasped.
5. One or a plurality of light bulbs were turned on by the electric power obtained by the generator, and the number of revolutions of the engine could be easily grasped by the brightness and the number of lights.
6. A pickup for torque measurement was installed at the rotating part from the roller to the engine main body, so that dynamic torque during rotation could be measured.
7. A tool fitting portion for measuring static torque using a torque wrench or a QL wrench was provided at the rotating part from the roller to the engine body. The tool fitting part refers to a standardized hexagonal shape, hexagonal hole shape, Torx shape, etc. that are generally used for bolt heads, using commercially available tools, with a torque wrench, etc. A shape that can measure static torque.
8. A voltmeter or ammeter was installed on the test stand, and the amount of power generation was measured so that the engine rotation speed could be easily grasped.
9. Each part is configured to be assembled with fastening members such as bolts and nuts, and is disassembled and can be stored in a predetermined size during transportation and transfer. Bolts and nuts include a configuration that can be disassembled and assembled without using a tool, such as a thumbscrew.
10. An electric blower for cooling a power source and drive system parts such as a vehicle was installed. In addition, the structure comprised so that this air blower might be driven with the electric power which the engine generated is also included.
11. A battery of a predetermined size was provided, and surplus power generated by the engine was charged into the battery so that stable power could be extracted from the battery.
12. A motor and a motor control device were attached to the roller for the non-driving wheel, and the non-driving wheel was rotated freely at a speed using electric power generated by the engine or external power.
13. When the number of revolutions of the engine exceeds a predetermined value, a device is provided to warn with light or sound. In addition, the structure which used the tachometer currently equipped with the motorcycle which used the said engine as it is, and was able to distinguish a red zone visually is also included.
14. The number of engines was plural, and the output shaft of each engine and the roller for driving wheels were connected by a chain, belt, or shaft, so that driving torque could be transmitted. That is, the magnitude of the resistance can be changed by changing the number of engines.
15. A shock absorbing damper was installed at the rotating part between the roller and the engine.
16. A flywheel was installed on the rotating part between the roller and the engine.
17. The pressure was taken out from the intake / exhaust system of the engine, the steam engine was driven, and the device was configured to take out rotational power equivalent to an electric motor. The pressure extraction includes a configuration in which a one-way valve is installed so that continuous positive pressure or continuous negative pressure can be extracted. The steam engine is a double-acting steam engine or a single-acting swinging engine. And all devices that convert gas pressure into rotational motion, such as steam turbines.
18. An engine in which the piston moves up and down in the cylinder was used as a compressor, a surge tank was provided, the pressure obtained by the engine was stored in the surge tank, and a pneumatic device such as an air tool could be used.
19. A part or all of the rotating part excluding the roller and part or all of the chain or belt were covered with a safety cover.
20, A friction clutch or coupling is provided in the part where torque is applied between the roller and the engine, and when a torque greater than a predetermined torque is applied, the part transmitting the driving force by the frictional force slips, The devices were installed to prevent damage to each device. In addition, the structure which made variable transmission torque by the adjustment mechanism of the pressurizing force to a friction part, and the structure which was able to be intermittently interrupted manually are included.
21. The engine was operated with fuel so that each roller could be driven. A roller for driving wheels and a roller for non-driving wheels are covered with an endless track having a predetermined width, and the apparatus is configured to be able to run or walk on the roller, and any one or more of the following features: The test bench according to claim 1, comprising:
1. The inclination angle of the endless track was made variable. That is, the vertical position of the non-drive wheel roller with respect to the drive wheel roller is variable.
2. The endless track was made of rubber, resin, or metal, a combination of materials, or a composite of each material.
3. When a person walks on an endless track and trains, a safety fence or safety bar is installed within the reach of human hands so that it can be gripped by humans, or a safety belt is installed. It was possible to prevent falls.
4. The change lever grip was installed within the reach of human hands walking on an endless track.
5. A holding device for holding the animal's body and a belt connecting the holding device and the test table were installed to enable the animal to walk on an endless track.
6. A holding tool that holds the main body of the robot and various traveling devices, and a belt that connects the holding tool and the test stand are installed so that the robot can run on an endless track.
7. By using the rotational speed information from the engine, the generated current / voltage information, and the torque value information, the information necessary for the training machine, such as travel distance and calorie consumption, can be displayed. The roller for non-driving wheels is configured to be swingable with respect to the vertical axis by any one of the following or any one of a plurality of configurations, according to any one of claims 1 to 4. Of the test stand.
1. The bearing portion that rotatably holds the non-driving roller is separated from the bearing portion that holds the driving roller, and can be oscillated by pin coupling about a substantially vertical axis.
2. A ball joint or universal joint is installed on the roller for the non-drive wheel, and the drive force can be transmitted from the roller for the drive wheel even when swinging, or it is connected with a flexible wire or flexible shaft. The driving force can be transmitted.
3. In addition to the pin coupling portion in the substantially vertical axis direction, a pin coupling portion having a central axis in the substantially horizontal direction is also provided so that the non-driving roller can swing in the left-right direction of the vehicle.
4. A device that can connect the rocking part of the test stand and the steering part of the vehicle so that the rocking of the roller for non-driving wheels and the steering of the vehicle, that is, the rotation direction of the steering wheel are matched. .
5. A motor for forcibly swinging the swinging part was installed. In addition, the structure which drives this motor with the electric power which the engine generated, and the structure provided with the apparatus which controls the rotational speed of a motor are also included.

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