JPH1164155A - Vehicle weight measuring device in collision testing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the weight of a traveling truck only act on a measuring rail part and perform a precise measurement by attachably and detachably installing a stopper body to the measuring rail part in no contact with a traveling rail part. SOLUTION: The tapered part 13a of a stopper body S is installed at the rear end part of a measuring rail Rb to the rear wheel 11 of a traveling truck T toward its longitudinal central side. The traveling truck T is retreated in a direction P to advance the wheel 11 above the measuring rail part Rb, and further retreated to bring the rear wheel, 11 into contact with the tapered part 13a, so that the further traveling is prevented. Thus, each wheel 11 of the traveling truck T is placed on the substantially longitudinal center part of each measuring rail Rb. The locking pin 14 of the stopper body S is fitted to a corresponding pin hole, so that it is never dropped out by the collision force in the contact of the wheel 11 with the tapered part 13a. Further, since the stopper body S is supported only by the measuring rail Rb, and non-contact with a traveling rail part Ra, the weight of the traveling truck T acts on only the measuring rail part Rb, and a precise weight measurement can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle weight measuring device for measuring the weight of a traveling vehicle on which a test object to be subjected to a collision test is mounted in a collision test device.

[0002]

2. Description of the Related Art Prior art will be described with reference to the drawings of an embodiment of the present invention. The collision test apparatus measures a magnitude of an impact acceleration acting on the object under test by causing a traveling vehicle on which a test object to be subjected to a collision test is mounted to run at a constant speed, causing the traveling vehicle to collide with an oil buffer device. It is a device for performing. By adjusting the oil pressure of the oil buffer device, the impact rigidity of the device is adjusted. As shown in FIG. 1, in this collision test device, a return sheave unit 1 and a vehicle weight measurement device A are disposed at a start portion U at one end of a pair of traveling rail portions Ra laid linearly. Oil buffer device 2 at the other end
And a winch device 3 are provided. By rotating a motor M constituting the winch device 3, the wire rope W is disposed substantially parallel to the pair of traveling rail portions Ra and disposed endlessly via the return sheave 4 in the return sheave unit 1. Is driven around. By changing the rotation direction of the motor M, the traveling direction of the wire rope W can be changed.

A dolly 5 is attached to the wire rope W, and the dolly 5 and the traveling vehicle T are connected by a connecting rope 6. By operating the winch device 3, the wire rope W travels around, and the traveling vehicle T connected to the wire rope W via the dolly 5 and the connecting rope 6 is towed on a pair of traveling rail portions Ra. . When the traveling speed of the traveling vehicle T reaches a predetermined speed,
The connection between the wire rope W and the traveling vehicle T is released at the dolly 5 by means not shown. The traveling vehicle T collides with the oil buffer device 2 while traveling at a constant speed. At this time, various impacts acting on the test object mounted on the traveling vehicle T are measured. The test object of the present embodiment is an airbag 8 mounted on a handle 7. The total length of the pair of running rails Ra is about 80 m.

[0004] The oil buffer device 2 to which the traveling vehicle T collides is adjusted in advance so that predetermined data can be obtained by colliding the traveling vehicle T with a specified weight (in this embodiment, 2 tons). ing. Therefore, the entire weight of the traveling vehicle T needs to be set to a weight corresponding to the oil buffer device 2. Further, there are various types of objects to be tested mounted on the traveling vehicle T. In order to make the sum of the own weight of the traveling vehicle T and the weight of the object to be tested correspond to the specified weight of the oil buffer device 2, an adjusting weight 9 is provided. Is mounted.
The total weight of the traveling vehicle T (the sum of the own weight of the traveling vehicle T, the weight of the object under test, and the weight of the adjusting weight 9) is measured by the vehicle weight measuring device A provided in the start portion U. next,
The vehicle weight measurement device A will be described.

[0005] As shown in FIGS. 2 to 4, a pair of traveling rail portions Ra at the start portion U is provided with a traveling vehicle T.
As many as the number of wheels 11 mounted on the vehicle (in the case of this embodiment,
And four measuring rail portions Rb are provided. The distance between the measurement rail portions Rb in the longitudinal direction corresponds to the distance between the wheels 11 of the traveling vehicle T. In the vehicle weight measurement device A, these measurement rail portions Rb are:
It is installed on the upper surface of a column 12 erected in a pit H formed in a start portion U. The load cell L is attached to the support 12. When the traveling vehicle T is weighed, the respective wheels 11 of the traveling vehicle T are mounted on the upper surface of each measurement rail portion Rb. Then, the entire weight of the traveling vehicle T acts on the load cell L via each measurement rail portion Rb. In this way, the traveling vehicle T is weighed.

[0006] In performing the above-mentioned weighing, a stopper S 'is used for positioning and mounting the traveling carriage T on the measurement rail portion Rb. This stopper body S '
As shown in FIG. 10, it is substantially T-shaped in a side view, and includes a main body portion 51 and a fitted portion 52 protruding from a lower surface of the main body portion 51. A tapered portion 51a is provided at a portion of the main body portion 51 abutting on the wheel 11 of the traveling vehicle T.
Are formed. The fitted portion 52 of the stopper body S '
The traveling rail portion Ra and the measurement rail portion Rb are fitted into the gap 53 at a part where the traveling rail portion Ra and the measurement rail portion Rb are separated. The main body 51 is supported by the traveling rail Ra and the measurement rail Rb. Then, the traveling vehicle T enters from the side of the tapered portion 51a in the main body 51, and the wheels 11 are brought into contact with the tapered portion 51a of the stopper body S 'and stopped. In this state, the wheels 11 of the traveling vehicle T are disposed on the upper surface of the corresponding measurement rail portions Rb at substantially the center in the longitudinal direction. That is, it is positioned with respect to each measurement rail portion Rb.

[0007] Then, the traveling vehicle T is weighed. At the same time, the total weight of the traveling vehicle T is adjusted to a weight corresponding to the oil buffer device 2 by increasing and decreasing the adjusting weight 9. However, in the case of the conventional stopper body S ', its main body 51 is supported by the running rail Ra and the measuring rail Rb. Therefore, the weight of the traveling vehicle T acts not only on the measuring rail portion Rb but also on the traveling rail portion Ra. This state is shown by a dashed line in FIG. As a result, it is extremely difficult to accurately measure the weight of the traveling vehicle T.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and in a vehicle weight measuring device in a collision test apparatus, the weight of a traveling vehicle acts only on a measuring rail portion, so that the traveling vehicle can be accurately measured. The task is to be weighed.

[0009]

Means adopted by the present invention to solve the above-mentioned problems is that a traveling truck carrying an object to be tested is mounted at a start portion at one end of a pair of traveling rails. A vehicle weight measuring device, and an oil buffer device disposed at the other end of the pair of traveling rails. The vehicle weight measuring device mounts each wheel of the traveling vehicle and weighs it. The same number of measurement rails as the number of wheels provided separately in the middle of the pair of travel rails, and the measurement rails in order to abut and stop the wheels of the traveling vehicle that has entered the measurement rails. And a stopper body detachably attached to a portion, wherein the traveling vehicle that has entered the vehicle weight measurement device is stopped by the stopper body, and after measuring the vehicle weight, the traveling vehicle is towed by a wire rope. Let me say In the collision test apparatus for measuring various impacts acting on the object under test by colliding with a buffer device, the stopper body is detachably mounted on the measurement rail section without contact with the traveling rail section. That is to say,

A traveling vehicle enters the vehicle weight measuring device. A stopper body is mounted on the measurement rail portion in advance. The stopper body is detachably mounted on the measurement rail. The traveling carriage is caused to travel, and its wheels are brought into contact with the stopper body to stop the traveling carriage. Each wheel of the traveling trolley is arranged in a state of being positioned with respect to each measurement rail portion. In this state, the traveling vehicle is weighed. Since the stopper body is mounted without contact with the traveling rail portion, the entire weight of the traveling vehicle acts only on the measuring rail portion and is accurately weighed. After the total weight of the traveling vehicle has been set to the weight corresponding to the oil buffer device, the traveling vehicle is traveled, and a collision test is performed.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail by way of examples. FIG. 1 is a schematic side view of a collision test apparatus, FIG. 2 is a side view of a vehicle weight measuring apparatus A in the collision test apparatus, FIG. 3 is a plan view thereof, FIG. 4 is a front view thereof, and FIG. 6 is an enlarged side view of a state where the stopper body S is separated, and FIG. 7 is a perspective view of FIG. As shown in FIGS. 1 and 2, a vehicle weight measuring device A according to the present invention is disposed in a pit H formed at a start portion U at one end of a pair of running rail portions Ra. In the start portion U, a pair of traveling rail portions Ra and measurement rail portions Rb are provided so as to be divided by the number corresponding to the wheels 11 of the traveling vehicle T. Each measurement rail portion Rb is installed on the upper surface of each column 12 erected in the pit H. Each support 12 is provided with a load cell L.

As shown in FIGS. 6 and 7, two stopper pins 14 protrude from the lower surface of a flat plate-shaped main body 13 of a stopper S constituting a vehicle weight measuring device A according to the present invention. It is the form formed by. A tapered portion 13 a is formed at one end of the upper surface of the main body 13. Measurement rail R
b, in the portion where the stopper body S is mounted,
Two pin holes 15 corresponding to the two retaining pins 14 are provided. The inner diameter of the pin hole 15 is
Slightly larger than the outside diameter of When the stopper S is mounted on the measurement rail Rb, the two stopper pins 14 are fitted into the respective pin holes 15 of the measurement rail Rb, so that the stopper S drops from the measurement rail Rb. I will not do it.
Moreover, the length of the stopper body S along the longitudinal direction of the measuring rail portion Rb is determined by the fact that the stopper body S
b, it is determined that there is no contact with the adjacent traveling rail portion Ra when the vehicle is mounted on the traveling rail portion Ra. Therefore, the stopper body S is supported only by the measurement rail portion Rb. The stopper body S is detachable from the measurement rail portion Rb.

The operation of the vehicle weight measuring device A according to the present invention will be described with reference to FIGS. 6, 8, and 9. Here, the case where the stopper body S is attached to the rear end of the measurement rail portion Rb corresponding to the rear wheel of the traveling vehicle T will be described. The stopper body S is attached to the rear end of the measurement rail Rb corresponding to the rear wheel of the traveling vehicle T among the measurement rails Rb. At this time, the stopper S is mounted such that the tapered portion 13a of the stopper S is directed toward the center of the measurement rail Rb in the longitudinal direction. The stopper body S is supported only by the measurement rail portion Rb, and is not in contact with the adjacent traveling rail portion Ra. The traveling trolley T is moved backward (runs in the direction of the arrow P), and the wheels 11 of the traveling trolley T enter above the corresponding measurement rail portions Rb. Further, the traveling vehicle T is moved backward, and the wheels (rear wheels) 11 of the traveling vehicle T are brought into contact with the tapered portion 13a of the stopper body S and stopped.
By doing so, the traveling carriage T is prevented from traveling further.

By the above-mentioned operation, each wheel 11 of the traveling vehicle T is placed at a substantially central portion in the longitudinal direction of each measurement rail portion Rb. That is, it is positioned with respect to the measurement rail portion Rb. Since the two retaining pins 14 of the stopper body S are fitted into the corresponding two pin holes 15, the wheels (rear wheels) 11 of the traveling vehicle T are tapered by the tapered portions of the stopper body S. It does not come off due to the collision force when it comes into contact with 13a. Moreover, the stopper body S is connected to the measuring rail Rb.
And is not in contact with the traveling rail portion Ra, so that the weight of the traveling vehicle T does not act on the traveling rail portion Ra.

As shown in FIG. 9, the total weight of the traveling vehicle T is measured in this state. When this weight is different from the weight corresponding to the oil buffer device 2, the weight is adjusted to the weight corresponding to the oil buffer device 2 by increasing or decreasing the weight of the adjusting weight 9. Thereafter, the wire rope W is circulated in a direction in which the traveling vehicle T travels forward, and the traveling vehicle T travels on the pair of traveling rail portions Ra.

In the vehicle weight measuring apparatus A of the present embodiment, the stopper S is mounted on the rear end of the measuring rail Rb.
Therefore, after the traveling vehicle T is weighed, the stopper body S
Even if the user forgets to remove, the traveling vehicle T and the stopper body S do not interfere with each other. Therefore, the traveling vehicle T is prevented from being damaged. However, the stopper S may be attached to the front end of the measurement rail Rb.

[0017]

The vehicle weight measuring device according to the present invention has the same number of measuring rails as the number of wheels divided and provided in the middle of the pair of running rails for mounting and weighing each wheel of the running truck. And a stopper body detachably attached to a portion of the measurement rail portion to abut and stop the wheels of the traveling vehicle that has entered the measurement rail portion,
The stopper body is detachably attached to the measurement rail section without contact with the traveling rail section. for that reason,
The following effects can be obtained. (1) Since the stopper body is supported only by the measurement rail portion and is not in contact with the traveling rail portion, the weight of the traveling carriage acts only on the measurement rail portion and does not act on the traveling rail portion. As a result, the weight of the traveling vehicle can be accurately measured, and the accuracy of the collision test is improved.
(2) When the stopper body is mounted on the rear end of the measurement rail corresponding to the rear wheel of the traveling vehicle, the stopper body may interfere with the traveling vehicle even after the traveling vehicle is weighed after the traveling vehicle is weighed. Therefore, the traveling cart is prevented from being damaged.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a collision test apparatus.

FIG. 2 is a side view of a vehicle weight measuring device A in the collision test device.

FIG. 3 is a plan view of the same.

FIG. 4 is a front view of the same.

FIG. 5 is an enlarged side view of a portion of a measurement rail portion Rb.

FIG. 6 is an enlarged side view of a state where a stopper body S is separated.

FIG. 7 is a perspective view of FIG. 6;

FIG. 8 is an operation explanatory diagram of a state in which each wheel 11 of the traveling vehicle T enters each measurement rail portion Rb of the vehicle weight measurement device A.

FIG. 9 is an operation explanatory view in a state where the traveling vehicle T is weighed.

FIG. 10 is an enlarged side view of a state where a conventional stopper body S ′ is separated.

[Explanation of symbols]

 A: Vehicle weight measuring device Ra: Running rail portion Rb: Measurement rail portion S: Stopper body T: Running truck U: Start portion W: Wire rope 2: Oil buffer device 8: Airbag (object under test) 11: Wheel

Claims (2)

[Claims] 1. A vehicle weight measuring device disposed at a start portion at one end of a pair of traveling rail portions for traveling a traveling vehicle on which a test object is mounted, and at a second end portion of the pair of traveling rail portions. An oil buffer device provided, wherein the vehicle weight measuring device has the same number as the number of wheels divided and provided in the middle of the pair of traveling rail portions for mounting and weighing each wheel of the traveling vehicle. A measuring rail portion, and a stopper body detachably attached to a portion of the measuring rail portion to contact and stop a wheel of a traveling vehicle that has entered the measuring rail portion, the vehicle weight measuring device The traveling vehicle that has entered the vehicle is stopped by the stopper body, and after measuring the vehicle weight, the traveling vehicle is towed and traveled by a wire rope to collide with the oil buffer device, and various types acting on the test object are measured. impact In the collision test apparatus for measuring, the stopper body, vehicle weight measuring apparatus in the collision test apparatus characterized by being detachably attached to the measuring rail portion becomes non-contact with the running rail section. 2. The vehicle weight measuring apparatus according to claim 1, wherein the stopper body is mounted on a rear end of a measuring rail corresponding to a rear wheel of the traveling vehicle.