JP2013160746A - Vehicle composite testing device and vehicle testing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle composite testing device capable of responding to evaluation tests of other types of vehicles.SOLUTION: In a vehicle composite test device consisting of: a movable type roller test part 100 on which wheels of a vehicle to be measured are mounted to be made movable in the forward and backward direction of the vehicle to be measured; and at least two fixed type roller test parts 200A, 200B, which are installed by being faced to the movable type roller test part 100, the vehicle to be measured with many wheel bases can be responded by combination of the movable roller test part 100, and the at least two fixed type roller test parts 200A, 200B.

Description

  The present invention relates to a vehicle composite test apparatus and a vehicle test method that can cope with an evaluation test of other types of vehicles.

Conventionally, vehicle evaluation tests, for example, measurement (inspection) of brake braking, speed, etc., are usually carried out by digging a hole in the floor of a maintenance shop or the like to form a pit, and using a vehicle composite testing device installed in this pit. . This vehicle composite test apparatus has a both-roller test section provided with a pair of rollers on which front, rear, left and right wheels of the vehicle are mounted during inspection.
For example, the following types of conventional test apparatuses have been proposed.

JP 2009-042223 A

In such a test device, the width (length) of the wheel base varies depending on the vehicle model in order to support evaluation tests of other types of vehicles. The roller test part needs to be moved.
As other types of vehicles, there are various types of vehicles such as small cars (light cars, etc.), medium-sized cars (medium-sized passenger cars, family-type and commercial-type wagon cars, etc.), and large cars (trucks, buses, etc.).

For this reason, in order to cope with more types of vehicles, a movable roller test section that can be moved in the pit and a fixed roller test section that is fixed in the pit are usually combined. It is necessary to increase the moving stroke of the roller test section.
In order to respond to this requirement, the length of the pit portion in which the movable roller test portion is accommodated needs to be increased accordingly.

However, when the moving stroke is increased, the cost of the moving mechanism portion is increased. Moreover, if the moving stroke becomes large and the pit length becomes longer by that amount, the construction cost of the pit increases. Furthermore, if the moving speed of the roller test section is constant during the operation, there is a problem that the moving time of the apparatus becomes long when the moving stroke is large.
Furthermore, when the roller test part is moved, the opening part on the upper surface of the pit also becomes large. Therefore, in the case where cover means for closing this is provided, the cost of this part is unavoidably increased.
In addition, since a large load is applied to the cover means when the measurement vehicle enters and leaves, there is a problem that the longer the cover means, the more disadvantageous the load resistance.
For these reasons, it is desirable to make the moving stroke as small as possible in the moving roller test section.

  The present invention has been made in view of such a situation, and in a combined vehicle testing apparatus corresponding to a measurement test of another type of vehicle, at least two units are provided for one movable roller test unit. The fixed-side roller test unit can be installed, and the combination of these multiple fixed-side roller test units and the moving stroke of the movable roller test unit can accommodate more wheelbases of the measuring vehicle. As a result, the present invention provides an excellent vehicle composite test apparatus and vehicle test method in which the moving stroke of the movable roller test section is kept small.

The invention described in claim 1 according to the present invention is a vehicle composite test apparatus in which a plurality of roller test units each including a pair of rollers on which wheels of a measurement vehicle are placed are installed in a pit on a floor surface,
One of the roller test units is a movable type installed so as to be movable in the front-rear direction of the measuring vehicle, and at least two of the roller test units are fixed types installed facing the movable roller test unit. The vehicle combined test apparatus corresponds to a plurality of wheel bases of the measurement vehicle by combining the at least two fixed roller test units with the movable roller test unit.

According to a second aspect of the present invention, one of the pair of rollers of each of the roller test sections is a rotatable free roller, the other is a drive roller, and the movable roller test section The free roller is connected to each of the free rollers of the fixed-type roller test section via a rotation transmission means having a clutch mechanism, and a speedometer is provided in part or all thereof, 2. The vehicle combined testing apparatus according to claim 1, wherein the driving roller is connected to a driving source for the driving roller, and a braking force meter is provided at a part or all of the driving roller.

According to a third aspect of the present invention, the rotation transmission means of the free roller is a belt transmission or a chain transmission, and the free roller of the movable roller test unit and the free roller of the fixed roller test unit 3. The vehicle composite test apparatus according to claim 2, wherein a link frame mechanism for belt transmission or chain transmission is interposed between the rollers.

   According to a fourth aspect of the present invention, the inertia compensation means having a flywheel for a speed limiting device installed in the pit and made rotatable is detachably connected via a clutch mechanism. The vehicle composite testing apparatus according to claim 1, 2, or 3.

The invention according to claim 5 according to the present invention includes a plurality of moving treads that block the opening portion of the pit opened by the movement of the roller test portion in conjunction with the movement in the movable roller test portion. An interlocking cover comprising guide rollers provided at the left and right edge portions of the movable tread, and approximately inverted U-shaped guide rails attached to the left and right of the apparatus frame side in the pit while the guide rollers are guided. The vehicle combined test apparatus according to claim 1, 2, 3 or 4, wherein means are provided.

  According to a sixth aspect of the present invention, the inverted U-shaped bottom surface portion of the generally inverted U-shaped guide rail is constructed between the rotation shafts of the pair of rollers of the roller test section, and the 6. The vehicle composite test apparatus according to claim 5, wherein bearing parts are mounted on the rotating shaft.

According to a seventh aspect of the present invention, there is provided a wheel movement prevention roller opposed to the rear side of the wheel of the measurement vehicle with respect to the driving roller of the fixed roller test section, and the driving of the movement prevention roller. 7. The vehicle combined testing apparatus according to claim 1, further comprising wheel movement preventing means having a cylinder.

An invention according to an eighth aspect of the present invention is the vehicle combined testing apparatus according to any one of the first to sixth aspects,
When the wheel base of the measurement vehicle is longer than the maximum distance between the movable roller test unit and the fixed roller test unit, the front and rear wheels of the measurement vehicle are individually placed on the roller test unit and inspected. The vehicle test method is characterized by the following.

In the invention according to the first aspect of the present invention, since it has one movable roller test section and at least two fixed roller test sections, these fixed-side roller test section and movable roller By combining with the moving stroke of the test part, it is possible to deal with more wheel bases of the measuring vehicle.
For example, even if the moving stroke of the roller in the movable roller test section is kept to be as small as 1425 mm, the maximum distance between both rollers between the movable roller test section and the first fixed roller test section adjacent to the movable roller test section. If the approach distance is 1150 mm, and the distance between both rollers between this and the second fixed-type roller test section is 1425 mm, it is possible to cope with the inspection of wheel-based measuring vehicles up to approximately 4000 mm. .
In order to cope with the wheel base of up to 4000 mm, if a combination of one mobile roller test unit and one fixed roller test unit is performed, the mobile roller test unit and the fixed roller test unit When the distance between the roller test portions is 1150 mm, the moving stroke of the roller in the movable roller test portion needs to be 2850 mm.
That is, the length is twice that of the present invention example. Of course, the pit length of the moving part is also increased.

Moreover, in the example of this invention, since the moving stroke of a movable type roller test part can be restrained as small as about 1.5 m, the cost of a moving mechanism part can be reduced.
Of course, the pit length is shortened as the moving stroke becomes smaller, and the pit construction cost can be reduced. Furthermore, if the moving speed of the roller test unit is constant during the operation, the moving time of the apparatus can be shortened by the small moving stroke. Excellent rapidity is obtained.
Furthermore, since the opening portion on the upper surface of the pit becomes small during the movement of the roller test portion, the cost of the cover means for closing this can be reduced.
In addition, since a large load is applied to the cover means when the measurement vehicle enters and leaves, it is advantageous in terms of load resistance because the cover means is shortened.

According to the second aspect of the present invention, at least the speed test of the measurement vehicle can be performed by the free roller and the speedometer of the roller test section, and the brake of the measurement vehicle can be performed by the drive roller and the braking force meter. A braking test can be performed.
That is, it is possible to cope with a plurality of inspections with a single device for various types of measurement vehicles having different wheel bases.

In the invention according to the third aspect of the present invention, in order to connect between the movable roller test section and the fixed roller test section, the rotation transmission means between the free rollers is provided with belt transmission or chain transmission, Since the link frame mechanism is interposed, the rotational force can be transmitted smoothly in conjunction with the movement of the movable roller test section.

In the invention according to claim 4 according to the present invention, since the rotary braking means having the flywheel for the speed limiting device is detachably connected to the movable roller test section, for example, a truck or the like In a speed vehicle subject to speed limitation (90 km / h), when the speed limit is inspected, the flywheel can smoothly suppress a rapid increase in wheel speed. Thereby, high reliability is obtained.

In the invention according to claim 5 of the present invention, the movable roller test section includes a plurality of movable treads, a guide roller for the movable treads, and a generally inverted U-shaped guide rail for guiding the guide rollers. Since the cover means is provided, the opening on the upper surface of the pit caused by the movement of the roller test portion can be automatically closed. As a result, it is possible to freely enter and exit the measurement vehicle and to obtain high safety for the worker.

In the invention described in claim 6 according to the present invention, since the inverted U-shaped bottom surface portion of the approximately inverted U-shaped guide rail is supported between the rotation shafts of the pair of rollers of the roller test section, it is resistant to a large load. Interlocking cover means with excellent loadability can be obtained.

According to the seventh aspect of the present invention, since the wheel movement preventing means opposed to the rear of the wheel of the measurement vehicle is provided for the driving roller of the fixed roller test section, the brake braking of the measurement vehicle is performed. At the time of inspection, the measurement wheel, that is, the vehicle can be prevented from swinging. These are particularly useful at the time of braking inspection of the side (parking) brake.

In the invention according to claim 8, according to the present invention, the wheel base is longer than the longest distance formed by the movable roller test part and the fixed roller test part, for example, a large truck having a wheel base exceeding 4000 mm. Even a bus or bus can be inspected.
In the case of large trucks and buses, the vehicle usually has a multi-axis structure with various intervals, but has a single movable roller test section and a plurality of fixed roller test sections. Can be used smoothly for various variations.

1 is a schematic principle diagram showing the principle of a vehicle combined testing apparatus according to the present invention. FIG. 2 is a schematic principle diagram of an apparatus showing a comparison with the apparatus of the present invention in FIG. 1. It is a general | schematic principle figure which becomes the other example of the vehicle composite testing apparatus based on this invention. 1 is a schematic plan view illustrating an example of a vehicle combined testing apparatus according to the present invention. FIG. 4 is a schematic side view of the vehicle combined test apparatus of FIG. 3. It is explanatory drawing which showed the principal part of the vehicle composite testing apparatus of FIG. It is the schematic perspective view which showed the drive roller part of the roller test part in the vehicle composite testing apparatus of FIG. It is the schematic perspective view which showed the wheel movement prevention means of the drive roller of the roller test part in the vehicle composite testing apparatus of FIG. It is the schematic explanatory drawing explaining operation | movement of the wheel movement prevention means of FIG. It is an expansion schematic explanatory drawing of the wheel movement prevention means of FIG. It is a schematic perspective view of the tire detection part of the wheel movement prevention means of FIG. It is the schematic perspective view which showed the inertia compensation means part connected with the roller test part in the vehicle composite testing apparatus of FIG. FIG. 4 is a schematic plan view showing a moving tread portion of an interlocking cover means in the vehicle combined testing apparatus of FIG. (A)-(b) It is the schematic side view which showed the movement tread part of the interlocking cover means in the vehicle composite testing apparatus of FIG. (A)-(B) It is the schematic explanatory drawing which showed the vehicle test method of this invention which test | inspects a measurement vehicle using the vehicle composite test apparatus of this invention of FIG.

FIG. 1 shows a schematic principle diagram of the vehicle combined testing apparatus according to the present invention.
In FIG. 1, reference numeral 100 denotes a movable roller test unit including a pair of rollers 110 a and 110 b on which wheels of a measurement vehicle are mounted, and 200 A and 200 B are also fixed types including a pair of rollers 210 a and 210 b on which wheels of the measurement vehicle are mounted. A roller test part, T is a wheel of a measurement vehicle.
Each of these roller test sections 100, 200A, and 200B is installed in a pit P (hole) on the floor surface of a maintenance shop or the like in a shape orthogonal to the front-rear direction of the measurement vehicle.

In this example, two fixed roller test units 200A and 200B are provided for one movable roller test unit 100, which is a major feature of the present invention.
Although the installation interval of each roller test part 100, 200A, 200B is not specifically limited, For example, it is like the dimension value shown in FIG.
In the case of this example, the moving stroke of the movable roller test section 100 is set to 1425 mm and is set to be as short as about 1.5 m, but the relationship (combination) with the two fixed roller test sections 200A and 200B ) Can be secured up to 4000 mm as the wheel base of the measurement vehicle.

In other words, the movable roller test unit 100 + the fixed roller test unit 200A can handle a measurement vehicle having a wheelbase width (length) of 1150 to 2575 mm.
In addition, the movable roller test unit 100 + the fixed roller test unit 200B can handle a measurement vehicle having a wheelbase width of 2575 to 4000 mm.
As a result, in this apparatus, it is possible to target almost all small cars (such as light cars) to medium-sized cars (such as medium-sized passenger cars, wagon cars such as family and commercial types) as target vehicle types.

When such a wheel base corresponds to a measuring vehicle up to 4000 mm, both of them correspond to one movable roller test unit 100 + fixed type roller test unit 200, as shown in FIG. That is, the moving stroke of the movable roller test unit 100 needs to be considerably long as 2850 mm. In this case, the cost of the device itself is inevitable. Moreover, since the length of the pit P is also increased, the construction cost is increased.

Further, when the link frame mechanism is used in the rotation transmission means between the movable roller test unit 100 and the fixed roller test unit 200 as in the present invention to be described later, a link space on the pit side is used. Therefore, if the moving stroke is large, a deep pit P is required accordingly. This also increases the cost.
Furthermore, if the moving stroke becomes large, the opening portion on the upper surface of the pit P becomes large in the moving type roller test portion, and the interlocking cover means for closing the opening portion also becomes long. This also increases the cost. . There is also a problem of reduced load resistance.
In the case of the present invention, as described above, the use of the two fixed roller test units 200A and 200B can shorten the moving stroke of the movable roller test unit 100. It can be avoided.

However, in the case of the device of the present invention, it is not possible to inspect the vehicle with a wheel base exceeding 4000 mm by placing the front and rear wheels at the same time.
However, as will be described later, according to the vehicle test method of the present invention, in the case of a large truck or bus with a wheelbase exceeding 4000 mm, even if the axle has a multi-axis structure, only the front wheel side of the measurement vehicle is If only the wheel side is performed in order, it can be handled.

Furthermore, as another example of the vehicle combined testing apparatus of the present invention, a configuration as shown in FIG. 3 is also possible. In this configuration, since there are three fixed roller test sections 200A, 200B, and 200C, the wheel base can be used for measuring vehicles such as large trucks and buses up to about 8000 mm.
In this case, the installation intervals of the roller test sections 100, 200A, 200B, and 200C are not particularly limited, but are the dimension values shown in FIG.
In the case of this apparatus, the front and rear wheels of the measurement vehicle can be placed on the predetermined roller test units 100, 200A, 200B, and 200C and inspected at the same time.
However, the moving stroke of the movable roller test unit 100 is slightly longer. However, it can be said that it is an effective configuration when priority is given to quick inspection and improvement of usability over apparatus and facility costs. This can be further advanced, and in the case of the present invention, the number of fixed roller test sections can be further increased to 4 or more.

Next, in the vehicle combined testing apparatus according to the present invention, a more specific aspect corresponding to FIG. 1 will be described in detail with reference to FIGS.

Reference numeral 100 denotes a movable roller test section, and reference numerals 200A and 200B denote fixed roller test sections. These correspond to the front, rear, left and right wheels of the measurement vehicle, and are provided almost symmetrically.
The movable roller test unit 100 is movably installed in the device frame portion (not shown) of the deep pit P portion (right side in FIG. 6), and the fixed roller test portions 200A and 200B are provided with the shallow pit P. It is fixed to the part (left side in FIG. 6).
Each of the roller test units 100, 200A, 200B has a pair of rollers, for example, in FIGS. 4 and 5, with respect to the approach direction of the measurement vehicle (the direction of arrow A in FIGS. 4 and 5) One side (right side in the figure) is rotatable free rollers 110a and 210a, and the other side (left side in the figure) is drive rollers 110b and 210b.

The free roller 110a side of the movable roller test unit 100 includes two systems of rotation transmission means 300A and 300B each having a free roller 210a of a fixed roller test unit 200A and 200B and electromagnetic clutch mechanisms 310a and 310b. Are connected to each other.
Further, a speedometer 410 (FIG. 5) such as a rotary encoder is provided on some (or all) of these free rollers 110a and 210a.
Furthermore, a driving source 500 (FIGS. 6 and 7) such as an electric motor is connected to each driving roller 110b and 210b, and a braking force meter 420 (such as a load cell) is connected to all of them (or a part thereof). FIG. 7) is provided.

The rotary shafts 120 and 220 between the left and right free rollers 110a and 210a of the roller test sections 100, 200A, and 200B are provided with electromagnetic clutches 130, 230a, and 230b, and the connection can be detached and attached as necessary. .
A lift plate 430 (see FIG. 3) for entering and leaving the measurement vehicle is provided between the free rollers 110a and 210a and between the drive rollers 110b and 210b. Although not shown, the lift plate 430 is connected to a bottom side of a cylinder device such as a hydraulic pressure so that it can be raised and lowered.

As shown in FIG. 5, the rotation transmission means 300A for connecting the free roller 110a of the movable roller test unit 100 and the free roller 210a of the inner (first) fixed roller test unit 200A is a belt as shown in FIG. There is a transmission (you can also change the chain).
Specifically, link frames 321a and 321b (in this example, a double structure) made of plate-like frame members that are movably attached to the rotation shafts 120 and 220 of each roller test unit 100, and these double layers There is a link frame mechanism 320 comprising a link shaft 322 pivotally attached to the free ends of the link frames 321a and 321b, and is further mounted on the rotating shaft 120 of the roller test unit 100, and the electromagnetic clutch mechanism 310a. A rotating pulley 331 provided with the link shaft 322, a fixed pulley 333 mounted on the rotating shaft 220 of the roller test section 200A, and between the rotating pulley 331 and the rotating pulley 332. A belt 341 provided and parts such as a belt 342 provided between the rotating pulley 332 and the fixed pulley 333 are provided.
Here, it is preferable that the belts 341 and 342 are toothed belts in order to improve transmission accuracy. In this case, of course, each pulley side is also toothed.

With the rotation transmitting means 300A having this structure, the rotation of the free roller 110a of the movable roller test unit 100 can be transmitted to the free roller 210a of the first fixed roller test unit 200A.

In addition, the movable roller test unit 100 moves as appropriate according to the wheel base of the measurement vehicle, but this movement can be quickly performed by the link action (bending action) of the link frame mechanism 320. And it can respond smoothly.
Although not shown, the movable roller test unit 100 itself is moved by a hydraulic cylinder or an electric motor incorporated in the apparatus.

Next, the rotation transmission means 300B for connecting the free roller 110a of the movable roller test section 100 and the free roller 210a of the outer (second) fixed roller test section 200A will be described. This means is also basically of the same structure as the rotation transmission means 300A, and is a belt transmission (a chain transmission is also possible).

Specifically, link frames 321a and 321b (in this example, a double structure) movably mounted on the rotating shaft 120 of the movable roller test unit 100 and a fixed shaft 323 provided on the apparatus frame side (not shown). ) And a link frame mechanism 320 comprising a link shaft 322 pivotally attached to the free end side of these double link frames 321a and 321b, and is further attached to the rotating shaft 120 of the roller test unit 100, The rotating pulley 331 provided with the electromagnetic clutch mechanism 310b, the rotating pulley 332 mounted on the link shaft 322, the rotating pulley 334 mounted on the fixed shaft 323 on the apparatus frame side, and the roller test unit 200B A fixed pulley 333 attached to the rotary shaft 220, a belt 341 provided between the rotary pulley 331 and the rotary pulley 332, and a rotary A belt 342 provided between Ri 332 and rotates the pulley 334, comprising a component such as a belt 343 provided between the rotating pulley 334 and the fixed pulley 333.
Here, it is preferable that the belts 341, 342, and 343 are toothed belts in order to improve transmission accuracy. In this case, of course, each pulley side is also toothed.

With the rotation transmitting means 300B having this structure, the rotation of the free roller 110a of the movable roller test unit 100 can be transmitted to the free roller 210a of the second fixed type roller test unit 200B.

That is, the rotation of the free roller 110a of the movable roller test unit 100 is transferred to the free rollers 210a of the first and second fixed roller test units 200A and 200B by the two systems of rotation transmission means 300A and 300B. Can be transmitted separately, and can be transmitted in various ways depending on the control states (ON, OFF) of a number of attached clutches 310a, 310b, 130, 230a, 230b.
Thereby, the high versatility which responds to various requests is obtained.

The two systems of rotation transmission means 300A and 300B approach the first fixed type roller test unit 200A and the second fixed type roller test unit 200B side, particularly when the mobile roller test unit 100 moves. Since each link frame mechanism 320 bends in a V shape, the lower end of the link frame mechanism 320 descends to the pit bottom side. At this time, when the moving stroke of the roller test unit 100 is about 1425 mm shown in FIG. 1 of the present invention, it can be handled with a pit depth of about 2000 mm. It can be said that it is within the normal pit depth range.
On the other hand, in the case of the movement stroke of 2850 mm in the apparatus shown in FIG. 2, a pit depth of about 3000 mm is required, which can be said to be a considerable depth.
Of course, if the pit depth is shallow, the construction cost can be reduced.

On the other hand, the drive rollers 110b and 210b of the roller test units 100, 200A and 200B are equipped with a drive system centering on a drive source 500 such as an electric motor.
FIG. 7 shows the fixed roller test section 200A, 200B side of this drive system (note that the drive system of the movable roller test section 100 is not shown, but has the same structure as this). ).

In FIG. 7, a chain sprocket 510, a one-way clutch mechanism 520, a reaction force receiving arm 530 for the braking force meter 420, and a rotation speed reducer 540 are mounted on the outer extension of the rotating shaft 220 of the driving roller 210 b. A belt 550 is provided between the pulley 541 of the rotational speed reducer 540 and the pulley 501 of the drive source 500.
Further, a chain 570 is provided between the chain sprocket 510 and the procket 560 mounted on the outer extension of the rotating shaft 220 of the free roller 210a. Reference numerals 581 and 582 denote bearings (pillows) of the respective rotating shafts 220.

The driving roller 210b is a roller that is rotationally driven at the time of brake braking measurement of the measurement vehicle (the same applies to 110b of the movable roller test unit 100).
At the time of brake braking measurement, the drive roller 210b is decelerated and rotated by the drive source 500 through the rotation speed reducer 540 and the one-way clutch mechanism 520.
When the predetermined speed is reached, the brake is braked on the measuring vehicle side of the wheel which is placed between the driving roller 210b and the free roller 210a and rotates together.
Then, the wheel of the vehicle tries to stop, and the reaction force is transmitted to the driving roller 210 b and further transmitted to the braking force meter 420 through the reaction force receiving arm 530.
As a result, the braking force meter 420 is pushed down, so that the brake braking force can be inspected by the pressure change with the contact portion.

On the other hand, at the time of speed inspection of the measurement vehicle, the measurement vehicle is driven to rotate the free roller 210a and the drive roller 210b together with the wheels. At this time, the rotational force is reduced by the action of the one-way clutch mechanism 520. , So that it is not transmitted to the drive source 500 side.

For example, as shown in FIGS. 6 and 8, wheel movement preventing means 600 is provided on the rear side of the drive roller 210 b (on the opposite side to the free roller 210 a side).
This is to prevent the wheels of the measurement vehicle from jumping out to the rear side of the drive roller 210b at the time of brake braking inspection, particularly at the time of braking inspection of the side (parking) brake. In the case of a side brake, brake braking is normally applied only to the rear wheel side, and the front wheel side is free (the front and rear wheels are braked with the pedal brake). There is a concern that it will jump out, and this is to prevent this.

The wheel movement prevention means 600 is provided with a wheel movement prevention roller 610 facing the rear side of the drive roller 210b, and is driven by a drive cylinder 620 installed therebelow. It has become.

More specifically, the holder plate 630 is pivotally attached to the rotation shafts 220 at both ends of the drive roller 210b, and the movement preventing roller 610 is attached to the free end side of both the holder plates 630 through the central shaft 611. It is. In addition, for example, a rod-shaped connecting member 640 is attached between the holder plates 630, and the tip of the piston rod 621 of the drive cylinder 620 is linked to the connecting member 640. With this configuration, the movement preventing roller 610 is opposed to the driving roller 210b so as to be able to swing (turn).

As shown in FIGS. 9 and 10, the movement preventing roller 610 is stored in the pit P when not in use (Ha, storage position in the figure). In use, the drive cylinder 620 is driven to bring the movement prevention roller 610 into contact with the wheel T of the measurement vehicle (Hb in the figure, tire contact position). It is also possible to set the tire contact position in advance.
The contact with the wheel T is detected by, for example, a wheel detector 650 provided near the tip of the piston rod 621 shown in FIG.

The wheel detector 650 includes an auxiliary link piece 651 and a fixed holder plate 652 attached with an intelligent device (sensor) 653. The auxiliary link piece 651 is pivotally attached to the connecting member 640. On the other hand, the fixed holder plate 652 is fixed to the connecting member 640.
On the free end side (left side in FIG. 11) of the auxiliary link piece 651, the tip end portion of the piston rod 621 is pivotally attached. Further, stoppers 654 and 655 are provided on the side of the fixed holder plate 652 corresponding to the upper and lower sides of the auxiliary link piece 651 in the drawing. Further, an elastic body 656 such as a spring is interposed above the upper stopper 654 and the auxiliary link piece 651 in the drawing. On the side (detector side) opposite to each stopper side of the auxiliary link piece 651, a sensor operation unit 651a including a projecting portion for the detector is provided.

In the wheel detection unit 650, when the drive cylinder 620 of the wheel movement prevention means 600 is driven and the movement prevention roller 610 comes into contact with the wheel of the measurement vehicle, the free end side of the auxiliary link piece 651 is moved upward in FIG. To rise. Then, the upper end side of the auxiliary link piece 651 abuts against the stopper 654 via the elastic body 656, while the sensor operation unit 651 a of the auxiliary link piece 651 operates the detector 653. Thereby, a wheel is detected.
When the detector 653 detects the wheel and is turned on, this detection signal drives the drive cylinder 620 again until the detector 654 is turned off.
That is, the position is returned from the position of the broken auxiliary link piece 651 in FIG. 11 to the solid line position.

With this returning operation, the movement prevention roller 610 that is interlocked with the drive cylinder 620 is slightly separated from the wheel T of the measurement vehicle (Hc in FIG. 10, retracted position after wheel detection). These operations are set to be automatically performed by a controller (not shown) of the apparatus.
In this retracted state, locking means (not shown) can be provided to lock and fix both the holder plates 630 and the connecting member 640 side of the movement preventing roller 610. In this case, the movement prevention roller 610 is more firmly fixed.
As a result, even when the brake is inspected rearward at the time of brake braking inspection, particularly at the time of braking inspection of the side (parking) brake, it is effectively prevented by the movement prevention roller 610 facing the rear of the wheel. Ensuring high safety.

In addition, an inertia compensation means 700 having a flywheel 710 for a speed limiting device is detachably connected to the drive roller 110b side of the movable roller test unit 100 via clutch mechanisms 720a and 720b. .
In recent years, the speed limiter is a device that is incorporated in a vehicle such as a truck and limits the vehicle speed from exceeding the speed limit (90 km / h) for the purpose of reducing traffic accidents.

Specifically, in the apparatus frame portion (not shown) of the deep pit P portion (right side in FIG. 6), the two flywheels 710 are connected to the drive roller 110b side of the left and right roller test sections 100. It is rotatably installed by a bearing 711 or the like.
Clutch mechanisms 720a and 720b made of an electromagnetic clutch or the like are mounted on the inner side of the rotary shaft 712 (the center portion in FIG. 12) of both flywheels 710, and are attached to the clutch mechanisms 720a and 720b. A belt 730 is provided between the rotating pulley 721 and the fixed pulley 111 attached to the rotating shaft 120 of the driving roller 110b.
Here, it is preferable that the belt 730 is a toothed belt in order to improve transmission accuracy. In this case, of course, each pulley side is also toothed. It is also possible to use chain transmission.

This inertia compensation means 700 is used, for example, at the time of speed inspection of a measuring vehicle that is required to limit the speed of a truck or the like ( less than 90 km / h).
In the case of a measurement vehicle such as a truck, when the driving side wheel T to which the engine drive is transmitted is placed on the movable roller test unit 100 to increase the speed, the free roller 110a and the driving roller 110b side are not connected. In the case of a load, the rotation instantaneously reaches a high speed.
To this rapid high-speed rotation, inertia compensation that suppresses the rapid high-speed rotation can be given by the load of the flywheel 710.
As a result, the speed on the measurement vehicle side can be stably increased to a target speed of about 90 km / h. That is, high safety can be ensured.

In the case of the present invention, the inertial tonnage of one flywheel 710 is 1 ton, and when two flywheels 710 are used, an inertial tonnage of 2 tons is obtained in total.
Since this inertia compensation means 700 is a means for giving inertia compensation to the free roller 110a and drive roller 110b side of the movable roller test section 100, this means is provided on the free roller 110a side or both rollers. Is also possible.
Also, the clutch mechanisms 720a and 720b are omitted, and a structure in which two flywheels 710 are connected to each other, or several ones or two flywheels 710 having different weights are prepared. A structure that can be replaced as appropriate can also be used.

In the case of the apparatus of the present invention, when the movable roller test unit 100 moves, an opening is formed on the upper surface of the pit accordingly. If this opening is present, the measurement vehicle cannot enter and exit freely, and it is also dangerous for workers.

For this reason, in the device of the present invention, in order to close the opening, an interlocking cover means 800 that is interlocked with the movement of the roller test portion 100 is provided.
The interlocking cover means 800 includes a plurality of moving treads 810 for closing the openings of the pits P opened by the movement of the roller test unit 100, guide rollers 820 provided on the left and right edges of the moving treads 810, The guide roller 820 is guided, and includes a generally inverted U-shaped guide rail 830 attached to the left and right of the device frame (not shown) side in the pit P.

In the case of the generally inverted U-shaped guide rail 830, as shown in FIG. 6, the inverted U-shaped bottom surface portion is provided so as to be flat with the top surface of the pit, and the length of the bottom surface portion is approximately the roller test section 100. The length corresponds to the moving stroke.
In addition, the bottom portion of the inverted U shape is installed between the rotation shafts 120 and 120 of the pair of rollers 110a and 110b of the roller test unit. 121 is attached.
As shown in FIG. 4, the guide rails 830 are provided on both sides of the left and right roller test units 100 in order to correspond to the left and right wheels of the measurement vehicle.

Although this rail member is not particularly limited, a high-strength groove-type channel material or the like is preferable because a large load is applied when the measurement vehicle enters and leaves.
In this member, if the groove-shaped opening is attached inward, the guide rollers 820 at both edges of the movable tread 810 need only be fitted into the opening.
As shown in FIGS. 6 and 14, the rail member is installed on the rotary shafts 120 and 120 on the side of the free roller 110a and the driving roller 110b, as shown in FIGS. In this case, since the rotary shafts 120 and 120 have a load resistance of about 10 tons per shaft, as a result, the interlock cover means 800 having a high load resistance characteristic is obtained.

There are a plurality (many) of moving treads 810 of the interlocking cover means 800, and these are connected to a Caterpillar (registered trademark) structure and have a suitable flexibility (bendability).
For example, as shown in FIG. 13, two square frame members 811 are attached to the bottom surface side of one movable tread 810, and the guide rollers 820 have both edge portions of the square frame member 811. Is provided. If a high-strength member is used as the square frame material 811, a movable tread 810 having high load resistance can be obtained.

Specifically, as shown in FIGS. 6 and 14, the movable tread 810 is attached to both sides in the front-rear direction of the roller test unit 100 so as to be divided.
As shown in FIGS. 6 and 14, a weight (counterweight) 840 is preferably provided on the free end side of each of the divided moving tread groups. When the weight 840 is present, smooth movement can be obtained when the roller test unit 100 moves in any of the front-rear directions as shown in FIGS.
In addition, since the interlocking cover means 800 is attached to the roller test unit 100, the opening on the upper surface of the pit can be automatically closed in conjunction with this movement.
Accordingly, it is not necessary to operate the roller test unit 100 every time the roller test unit 100 is moved, and it is possible to freely enter and exit the measurement vehicle, and to obtain high safety for workers.

In the case of the device of the present invention having such a configuration, a speed inspection and a brake braking inspection can be performed in the same manner as a normal device of this type.
In the speed inspection, a pair of rollers of the roller test section on the wheel-mounted side driven by the measurement vehicle is set in a rotatable state, the vehicle engine is driven, and the rotation speed of the roller at that time is determined by a speedometer. This can be done by detecting at 410.
In the brake braking inspection, the driving roller is driven by the driving source among the pair of rollers of the roller test part on the side where the wheel to be brake-brake of the measuring vehicle is mounted. This can be done by depressing the pedal. This brake braking detection is performed by a braking force meter 420.

However, in the device of the present invention, the length of the wheelbase of the vehicle to be measured, the characteristics of the vehicle type (full-time 4WD vehicle, vehicle with traction control), the braking inspection of the side (parking) brake, the speed inspection of the speed-limited truck, etc. Correspondingly, it can be appropriately performed as follows.
That is, it includes one movable roller test unit 100 and two fixed roller test units 200A and 200B, and also includes two systems of rotation transmission means 300A and 300B, and wheel movement prevention means on the drive roller 210b side. 600, since the inertia compensation means 700 having the flywheel 710 is provided, a wide variety of variations can be accommodated.

<Speed inspection>
I. Normal vehicle (excluding full-time 4WD vehicles and vehicles with traction control)
(Vehicles with wheelbase length = 1150-2575 mm)
The front and rear wheels of the measurement vehicle are placed on the movable roller test unit 100 and the first fixed roller test unit 200A. At this time, the clutch 130, 230a is turned on (connected), and the electromagnetic clutch mechanisms 310a, 310b are turned off (not connected), and the speed inspection is performed.

(Wheelbase length = 2575-4000mm vehicles)
The front and rear wheels of the measurement vehicle are placed on the movable roller test unit 100 and the second fixed roller test unit 200B. At this time, the clutch 130, 230b is turned on (connected) and the electromagnetic clutch mechanism 310b is turned off (not connected), and the speed inspection is performed.

II. Special vehicles (full-time 4WD vehicles, vehicles with traction control)
(Vehicles with wheelbase length = 1150-2575 mm)
The front and rear wheels of the measurement vehicle are placed on the movable roller test unit 100 and the first fixed roller test unit 200A. At this time, the clutch 130, 230a and the electromagnetic clutch mechanism are turned on (connected), and the other clutches and clutch mechanisms are turned off (not connected), and the above speed inspection is performed.
That is, the rotation transmitting means 300A connects the free rollers 110a and 210a of the movable roller test unit 100 and the first fixed roller test unit 200A, and rotates them in conjunction with each other.

(Wheelbase length = 2575-4000mm vehicles)
The front and rear wheels of the measurement vehicle are placed on the movable roller test unit 100 and the second fixed roller test unit 200B. At this time, the clutch 130, 230b and the electromagnetic clutch mechanism 310b are turned on (connected), and the other clutches and clutch mechanisms are turned off (not connected), and the above speed inspection is performed.
In other words, the rotation transmission means 300B connects the free rollers 110a and 210a of the movable roller test unit 100 and the first fixed roller test unit 200B, and rotates them in conjunction with each other.

<Brake braking inspection>
I. Normal vehicle, full-time 4WD vehicle, vehicle with traction control (wheelbase length = 1150 to 2575mm)
The front and rear wheels of the measurement vehicle are placed on the movable roller test unit 100 and the first fixed roller test unit 200A. At this time, all the clutches and clutch mechanisms are turned off (not connected), and the above-described brake braking inspection is performed.
Further, when the brake braking inspection is a side (parking) brake, the rear wheel side is usually brake-brake, so that the wheel movement preventing means 600 on the driving roller 210b side of the first fixed type roller test unit 200A is driven. Let

(Wheelbase length = 2575-4000mm vehicles)
The front and rear wheels of the measurement vehicle are placed on the movable roller test unit 100 and the second fixed roller test unit 200B. All the clutches and clutch mechanisms are OFF (not connected), and the above brake braking inspection is performed.
Further, when the brake braking inspection is a side (parking) brake, the rear wheel side is normally brake-brake, so that the wheel movement preventing means 600 on the driving roller 210b side of the second fixed type roller test unit 200B is driven. Let

<Vehicle test method>
Large multi-axle vehicles (large trucks and buses)
In the case of a vehicle having a wheelbase length exceeding 4000 mm, it is longer than the longest distance formed by the movable roller test unit 100 and the fixed roller test units 200A and 200B. Various detections cannot be performed.
However, various inspections can be performed by using the vehicle test method of the present invention in which the apparatus of the present invention is used to mount only the front wheel side and the rear wheel side of this large multi-axle vehicle in order.

In the case of large multi-axle vehicles, there are usually many rear wheel drive vehicles. At this time, for example, as shown in FIG. And the first fixed type roller test section 200A.
In the speed inspection, the vehicle engine is driven, and the rotational speed of the rollers 110a and 110b of the front wheel TF1 (usually this wheel is the driving wheel) at that time may be detected by the speedometer 410. In addition, when the rear wheel TF2 is also a driving wheel, the speed of the rollers 210a and 210b can be detected by the speedometer 410.

In this type of large multi-axle vehicle in which the front wheel TF1 of the rear wheel is driven, when inspecting the incorporated speed limiter (limit speed, 90 km / h), the inertia having the speed limiter flywheel 710 is used. The compensation means 700 is connected to the drive roller 110b side of the movable roller test unit 100 via the clutch mechanisms 720a and 720b.
At this time, if only the clutch mechanism 720a is turned on, an inertial tonnage of 1 ton can be given, and if both the clutch mechanisms 720a and 720b are turned on, an inertial tonnage of 2 ton can be given. As a result, it is possible to suppress a sudden increase or decrease in the wheel speed and smoothly increase the wheel speed to the target speed limit. That is, high reliability can be obtained.
Even in the case where the wheel base has a length of up to 4000 mm, when it is necessary to inspect the speed limiter, at the same time as this, using the drive roller 110b of the movable roller test unit 100, Good.

Further, in the case of a large multi-axle vehicle in which the front wheels are driven, the speed inspection and the speed limiting device may be inspected as in the case of the type in which the rear wheels are driven.

In the case of a brake inspection for a large multi-axle vehicle, the front and rear wheels may be checked by the driving rollers 110b and 210b.
At this time, for example, as shown in FIG. 15B, the front wheel TF1 of the biaxial front wheel is placed on the movable roller test unit 100, and the rear wheel TF2 of the front wheel is placed on the second fixed mold. Placed on the roller test section 200B. Of course, when the distance between the front wheels TF1, TF2 is the narrowest, the rear wheel TF2 is placed on the first fixed-type roller test section 200A.
In this state, the left and right wheels TF1 and TF2 of the front wheel can be inspected at a time.
In this example, since the rear wheel has a single axis, in the brake braking inspection of the rear wheel, the vehicle is moved forward to the movable roller test unit 100 (the fixed roller test units 200A and 200B are also possible). Just place it and do it.

According to this vehicle test method, the vehicle composite test apparatus according to the present invention is used, which has one movable roller test unit 100 and at least two fixed roller test units 200A and 200B. Even in the case of a large multi-axle vehicle where the distance between the front side and the rear side of the wheel between the two axes is greatly different, it can be applied to almost all cases.
As a result, it is possible to reduce the number of troublesome operations such as moving the measurement vehicle and aligning it for each wheel. In other words, usability is greatly improved. In addition, work time can be shortened, and workability can be improved.
In particular, when a user conducts these operations on his own, the positioning of the measurement vehicle is quite difficult, and there is a concern that the practicality of the vehicle will drop significantly if the number of work processes is large. is there. This test method can be expected to greatly alleviate this concern.

  The above description of the present invention shows a typical inspection mode, and the present invention is not limited to this mode. That is, various operation modes of the apparatus of the present invention, and other modes within the scope and spirit of the vehicle test method of the present invention are included.

DESCRIPTION OF SYMBOLS 100 ... Moving type roller test part, 110a ... Free roller, 110b ... Drive roller 200A, 200B ... Fixed type roller test part, 210a ... Free roller, 210b ... Drive roller 300A, 300B ... rotation transmission means, 320 ... link frame mechanism 410 ... speedometer, 420 ... braking force meter 500 ... drive source, 520 ... one-way clutch mechanism, 530 ... Reaction force receiving arm, 540... Rotational speed reducer 600... Wheel movement prevention means, 610... Movement prevention roller, 620.
700 ... inertia compensation means, 710 ... flywheel, 720a, 720b ... clutch mechanism 800 ... interlocking cover means, 810 ... moving tread, 820 ... guide roller, 830 ... schematic Inverted U-shaped guide rail

Claims (8)

A vehicle composite testing device in which a plurality of roller test units each including a pair of rollers on which wheels of a measurement vehicle are placed are installed in a pit on the floor surface,
One of the roller test units is a movable type installed so as to be movable in the front-rear direction of the measuring vehicle, and at least two of the roller test units are fixed types installed facing the movable roller test unit. A vehicle combined testing apparatus corresponding to a plurality of wheel bases of the measurement vehicle by combining the at least two fixed roller testing units with the movable roller testing unit.   One of the pair of rollers of each roller test section is a rotatable free roller, the other is a drive roller, and in the free roller of the movable roller test section, the fixed roller test section The free rollers are connected to each other via a rotation transmission means having a clutch mechanism, and a speedometer is provided in a part or all of the free rollers, and a driving source for the driving rollers is connected to the driving rollers. The vehicle combined testing apparatus according to claim 1, wherein a braking force meter is provided in part or all of the vehicle. The rotation transmitting means of the free rollers, a belt drive or chain Den dynamic, and the free rollers of the mobile roller test section and the between fixed free rollers of the roller test unit for belt drive or chain transmission The combined vehicle testing apparatus according to claim 2, wherein a link frame mechanism is interposed.   Inertial compensation means having a flywheel for a speed limiting device installed in the pit and rotatable with respect to the movable roller test section is detachably connected via a clutch mechanism. 4. The vehicle combined testing apparatus according to claim 1, 2, or 3.   A plurality of moving treads that block the opening of the pit opened by the movement of the roller test unit in the moving roller test unit, and provided on the left and right edges of the moving tread. 2. An interlocking cover means is provided which comprises a guide roller and a guide rail which is guided by the guide roller and which is attached to the left and right sides of the apparatus frame side in the pit. The vehicle composite test apparatus according to 2, 3, or 4.   The inverted U-shaped bottom surface portion of the generally inverted U-shaped guide rail is installed between the rotation shafts of the pair of rollers of the roller test section, and the bearing part is mounted on the rotation shaft of the installation portion. 6. The vehicle composite test apparatus according to claim 5, wherein   A wheel movement prevention means having a wheel movement prevention roller opposed to the rear of the wheel of the measurement vehicle and a drive cylinder of the movement prevention roller is provided for the driving roller of the fixed type roller test section. The vehicle combined testing apparatus according to claim 1, 2, 3, 4, 5 or 6. In any one of the vehicle combined testing devices selected from the above claims 1 to 7,
When the wheel base of the measurement vehicle is longer than the maximum distance between the movable roller test unit and the fixed roller test unit, the front and rear wheels of the measurement vehicle are individually placed on the roller test unit and inspected. A vehicle test method characterized by the above.

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