JPH031614B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a side slip measuring device for a vehicle that measures the side slip of a vehicle and adjusts toe-in.

(Prior art) Conventionally, before a vehicle is produced on an assembly line and shipped as a product, various tests such as side slip measurements are conducted. Rather than a continuous assembly line, each independent test device is installed in sequence, and the vehicle is moved in sequence, so measurements and adjustments are essentially made while the vehicle is stationary. The problem is that the processing efficiency is lower than that of an assembly line.

In other words, conventional side slip measurement and toe-in adjustment devices, for example, lock the rear wheels on a fixed station and perform the measurement while rotating the front wheels on a drum tester.
In addition, a vehicle is run on a flat plate installed so that it can move freely, and measurements are taken from the movement of this flat plate (for example, Utility Model Application No. 57-198039, Japanese Patent Application Laid-open No. 57-1980)
160044), but these measurement methods cannot be used on-conveyor, which is a major obstacle to test line automation.

In particular, there are some vehicles that require separate side slip measurements for the rear wheels in addition to the front wheels, and there is a desire for on-conveyor side slip measurement for such vehicles as well.

(Object of the Invention) In view of the above circumstances, the present invention realizes on-conveyor side slip measurement, and makes it possible to separately measure the side slip of the front and rear wheels or adjust the toe-in while the vehicle is being transported on the conveyor. The object of the present invention is to provide a side slip measuring device for a vehicle.

(Structure of the Invention) The side slip measuring device of the present invention has a rotating roller type side slip for the front wheels and a rear wheel, which is installed at intervals corresponding to the wheel base of the vehicle on an endless slat conveyor laid within a certain section. A rotating roller of the slip measuring means is interposed, and driving means for driving the rotating roller within a specific section where the front wheels and rear wheels of the vehicle are mounted on the rotating roller is provided, and a driving means is provided adjacent to the rotating roller. A fixing means for fixing the lateral movement of the wheel on the rotating roller is provided, the rear wheel is fixed when measuring the side slip of the front wheel, and the front wheel is fixed when measuring the side slip of the rear wheel. be.

(Effects of the Invention) According to the present invention, the endless slat conveyor is provided with rotating roller type side slip measuring means for front wheels and rear wheels, and the front and rear wheels of a vehicle are placed on the rotating rollers of the side slip measuring means. When measuring the side slip of a front wheel or rear wheel by rotationally driving it by a driving means, the lateral movement of the other rear wheel or front wheel is fixed by a fixing means, and the lateral movement of the other rear wheel or front wheel is fixed by a fixing means, and the side slip of the front wheel or front wheel is By measuring the side slip from the amount of lateral movement and adjusting the toe-in based on this, it is now possible to measure the side slip of the front and rear wheels separately when transporting the front and rear wheels of a vehicle on a conveyor. , adjustment is possible and efficient.Furthermore, by realizing on-conveyor system, measurements and adjustments can be made while being continuously conveyed on the conveyor, so there is no need to stop the flow of the test line, and it is possible to connect the front and rear vehicle assembly lines, etc. It is possible to improve processing efficiency.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of a side slip measuring device capable of separately measuring the side slip of front and rear wheels of a vehicle, and FIG. 2 is a schematic side view.

Reference numeral 1 denotes an endless slat conveyor laid within a certain section, and a pair of slat conveyors are installed on the left and right at intervals corresponding to the vehicle wheel width.The rear end is supported by an end pulley 2, and the front end is supported by a drive pulley (not shown). It is configured to be supported by and run at a predetermined speed.

In this slat conveyor 1, rotating roller type side slip measuring means 3A, 3B for front wheels and rear wheels are installed at a predetermined interval corresponding to the wheel base of the vehicle C, and these side slip measuring means 3A, 3B moves integrally with the movement of the slat conveyor 1. The rotating rollers 4, 4 of the side slip measuring means 3A, 3B for front wheels and rear wheels face the conveyance surface of the slat conveyor 1 and are spaced at a predetermined interval so as to support the wheels W of the vehicle C in the front and rear. The rotating roller 4 is rotatably driven by an endless driving means 5 installed inside the slat conveyor 1, and is provided so as to be movable in the axial direction (lateral direction). The side slip amount is measured by detecting the amount of lateral movement of the rotating roller 4 as it rotates.
Toe-in adjustment is performed based on this measurement.

The driving means 5 engages with the rotating roller 4 and drives the rotating roller 4 to rotate within a specific section where the front and rear wheels W of the vehicle C are mounted on the slat conveyor 1 (rotating roller 4). An endless drive chain 6 is provided along the slat conveyor 1 at a fixed portion below the conveyance side of the slat conveyor 1, and the drive chain 6 is driven by a stationary drive motor 7. As the slat conveyor 1 moves, the rotating roller 4 is connected to a chain sprocket 17, which will be described later, by engaging with a driving chain 6 as the slat conveyor 1 moves. It is rotationally driven by the running of the motor. The engagement starting portion 6a on the rear end side of the driving chain 6 is elastically provided so as to be able to tilt slightly in the vertical direction, so that the engagement between the two can be reliably performed.

The side slip measuring means 3A and 3B for the front wheels and rear wheels have the same structure, and the detailed structure thereof is shown in FIGS. 3 and 4.

The slat conveyor 1 is formed into an endless type by connecting narrow plates 1a constituting a conveying surface with chain parts 1b on both sides.
A chain sprocket of a drive pulley (not shown) is engaged with the drive pulley and driven at a constant speed. A portion of the plate 1a of the slat conveyor 1 is cut out, and a shaft 8 supporting the rotating roller 4 is fixed to the lower surface of the plate 1a by a bearing 9 so that the rotating roller 4 faces this portion.

The rotating roller 4 is supported by the shaft 8 via a ball slide 10, rotates together with the shaft 8, and is movable in the axial direction. On both sides of the rotating roller 4, springs 11, 11 are respectively compressed between the rotating roller 4 and the bearings 9, 9 via a thrust bearing 12. Brackets 13 are attached to the races on the fixed side of the thrust bearings 12 on both sides of the slat conveyor 1, and a rod 14 connecting the brackets 13 on both sides is guided in the axial direction by a guide 15 fixed to the plate 1a of the slat conveyor 1. Bracket 13 is prevented from rotating. A sliding rod 16a of a position sensor 16 (potentiometer) is fixed to the bracket 13, and the amount of lateral movement of the rotating roller 4 is determined by the position sensor 16.
The detection signal of the position sensor 16 is output to an arithmetic circuit (not shown), and a display shows the side slip amount or whether it is within the allowable range.
Displays whether toe-in adjustment is necessary or not.

Further, a chain sprocket 17 that engages with the drive chain 6 to drive the rotating roller 4 is fixed to one end of the shaft 8.

On the other hand, on one side (outside) adjacent to each of the rotating rollers 4, 4 of the side slip measuring means 3A, 3B for the front wheels and rear wheels is a fixed side roller 18.
is arranged, while a movable side roller 19 is arranged on the other side (inside), and the rotating roller 4 is moved when necessary.
Fixing means 27 are provided for pushing and centering the upper wheel W and for fixing the lateral movement of the wheel W.

The moving mechanism of the moving side rollers 19, 19 is as shown in FIG.
A support member 20 to which a stopper 9 is attached passes through the slat conveyor 1 downwardly, and the support member 20 has a pin 22 that can come into contact with a stopper 21 and an operation cam 2.
A rod 24 that can be slidably connected to 3 is implanted.
The pin 22 and the rod 24 are slidably supported by a guide member 25 fixed to the slat conveyor 1, and the rod 24 is projected by a spring 26 in the direction in which the moving side roller 19 comes into contact with the wheel W. biased in the direction.
Further, a roller 24a that contacts the operating cam 23 is installed at the tip of the rod 24, and the contact with the operating cam 23 causes the movable side roller 19 to move in the backward direction against the spring 26.

According to the above embodiment, the vehicle C is carried into the slat conveyor 1, and the front and rear wheels of the vehicle C are placed on the rotating rollers 4, 4 of the side slip measuring means 3A, 3B. is mounted on the slat conveyor 1 and is moved at the running speed of the slat conveyor 1. Along with this movement, the chain sprocket 17 of the rotating roller 4 engages with the driving chain 6 of the driving means 5, and the rotating roller 4 is rotationally driven, whereby the wheels W of the vehicle C riding on the rotating roller 4 are rotated. Rotate. Subsequently, when measuring the side slip of the front wheel, the movable side roller 19 of the fixing means 27 for the rear wheel is moved to fix the lateral movement of the rear wheel, and when measuring the side slip of the rear wheel, the moving side roller 19 of the fixing means 27 for the front wheel is moved. The side rollers 19 are moved to fix the lateral movement of the front wheels, and as the measurement side wheel W rotates, toe-in,
Side slip occurs due to the tire pattern, etc., and the rotating roller 4 moves laterally along the shaft 8 due to the reaction force, and the position sensor 16 detects the amount of movement and moves the front and rear wheels of the vehicle C. The side slip of the ring is measured separately.

In order to measure the side slip of the front wheel or rear wheel of the vehicle C, the rear wheel or front wheel that is not to be measured is fixed by moving the operating cam 23 of the fixing means 27 provided on the side slip measuring means 3B or 3A. As the rod 24 released from contact with the operating cam 23 is moved by the biasing force of the spring 26, the moving side roller 19 is actuated in the direction of the wheel W via the support member 20, and the wheel W is centered. It rises and is fixed to prevent it from moving laterally.

The drive means 5 is configured to be able to drive the side slip measuring means 3A for the front wheels and the side slip measuring means 3B for the rear wheels independently, so that the driving speed of the front and rear wheels can be changed or when unnecessary. It may also be stopped.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view showing a side slip measuring device for a vehicle according to an embodiment of the present invention, Fig. 2 is a schematic side view thereof, and Fig. 3 is a detailed side view showing a side slip measuring means partially in section. , Figure 4 is the third
FIG. 5 is a detailed sectional view taken along the line - in FIG. 3. FIG. 5 is a detailed sectional view taken along the line - in FIG. 1... Slut conveyor, 3A, 3B... Side slip measuring means, 4... Rotating roller, 5...
Driving means, 27...fixing means.

Claims (1)

[Claims] 1 Rotating rollers of rotating roller type side slip measuring means for front wheels and rear wheels are interposed at intervals corresponding to the wheel base of the vehicle in an endless slat conveyor laid within a certain section, and A drive means is provided for driving the rotating roller within a specific section in which the front wheel and the rear wheel are mounted on the rotating roller, and a fixing device is provided adjacent to the rotating roller to fix the lateral movement of the wheel on the rotating roller. A side slip measuring device for a vehicle, characterized in that a means is provided to fix the rear wheel when measuring the side slip of the front wheel, and to fix the front wheel when measuring the side slip of the rear wheel.