JPH0547394Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to a collision test device used when performing a destructive test by colliding a test object with a barrier.

B. Summary of the invention The present invention uses an auxiliary roller to increase the number of wires wrapped around the drive drum in a collision test device using a closed-loop wire to increase the driving traction force and to apply wire tension to the auxiliary roller. This is a collision test device that also has adjustment functions.

C. Prior Art A conventional crash test device using a closed-loop wire, which has the advantage of requiring a relatively short wire and only one driving drum for pulling the wire, is shown in FIG. It was hot.

A closed loop wire 1 is arranged around a number of guide rollers 2, and a drive drum 4 driven and rotated by a motor 3, a deflection roller 5, an auxiliary roller 6, and a tension pulley 7 are wound around the wire 1. It is. The wire 1 is wound twice around the drive drum 4 due to the arrangement with the auxiliary roller 6, which prevents slipping between the wire 1 and the drive drum 4, and also prevents the wire 1 from slipping between the drive drum 4 and the auxiliary roller 6. A deflection roller 5 is provided in between to prevent the wire 1 from being wound around the drive drum 4 in an overlapping manner. Further, the tension pulley 7 can be moved and adjusted along the rail 7a by a feed screw mechanism, so that the tension applied to the wire 1 can be adjusted. Then, a test object (for example, a vehicle) attached to the wire 1
is driven by towing the wire 1 and collides with the fixed barrier 8.

D. Problems to be solved by the invention The conventional crash test equipment described above had the following problems. That is, in order to increase the wire traction force and eliminate test speed errors due to slippage, it is preferable to wrap the wire 1 around the drive drum 4 many times. The number must be set in proportion to the number of times. Therefore, the drive drum 4 and the auxiliary rollers 6 become larger in the axial direction depending on the number of deflecting rollers 5, and the entire device becomes larger. Furthermore, the fact that the tension pulley 7 is provided separately is also a factor in increasing the size of the device.

E. Means for Solving the Problems The collision test device according to the present invention involves winding an endless wire around a drive drum and a plurality of guide rollers that are spaced apart from each other on a base, and driving the drive drum to rotate. In the collision test apparatus, the wire is rotated by the wire, and the test object attached to the wire collides with a barrier installed on the base in the middle of the wire's movement path. a slider provided with respect to a base so as to be able to reciprocate in a direction facing the driving drum; and a feed screw provided between the slider and the base and capable of driving the slider in a direction facing the driving drum. a mechanism, an auxiliary roller rotatably installed on the slider, auxiliary annular grooves formed at regular intervals on the outer peripheral surface of the auxiliary roller, and fixed grooves corresponding to these auxiliary annular grooves on the outer peripheral surface of the drive drum. a plurality of annular grooves formed at intervals, the rotation axis of the auxiliary roller is inclined in accordance with the intervals of the annular grooves, and the wire is wound around the annular grooves and the auxiliary annular groove. It is characterized by the fact that

Therefore, when the drive drum is driven and rotated, the endless wire is moved around the outer circumference of the drive drum and the auxiliary roller by the annular groove formed on the outer circumference of the drive drum and the auxiliary annular groove formed on the outer circumference of the auxiliary roller. The device rotates without being wrapped around the surface, and the test object attached to the wire collides with the barrier installed on the base.

Furthermore, by operating the feed screw mechanism, the slider moves on the base and the distance between the drive drum and the auxiliary roller changes, making it possible to arbitrarily adjust the tension of the wire.

F Example One example of the collision test apparatus according to the present invention will be described based on FIGS. 1 to 3. Incidentally, the same parts as in the prior art are given the same reference numerals, and redundant explanations will be omitted.

Drive drum 14 of the collision test device according to this embodiment
has three annular grooves 14a on its circumferential surface at a predetermined interval P.
These annular grooves 14
The position of the wound wire 1 is determined in step a. Furthermore, two auxiliary annular grooves 16a are provided on the circumferential surface of the auxiliary roller 16 at a predetermined interval, and these auxiliary annular grooves 16a also determine the position of the wire 1 wound around the wire 1.

As shown in detail in FIG. 3, the shaft 26 that supports the auxiliary roller 16 is inclined with respect to the shaft 24 that supports the drive drum 14, so that the auxiliary annular groove 16a is formed in the annular groove 14a. They are set to be inclined by an interval P. The wires 1 are routed between the annular groove 14a and the auxiliary annular groove 16a in the order of A, B, C, D, E, F, G, H, I, and J in FIG. It is wrapped three times.
Therefore, the wire 1 is connected to the driving drum 14 and the auxiliary roller 16 without using a deflecting roller as in the conventional case.
The belt is wound smoothly without overlapping or twisting between the belt and the drive drum 14, and by winding it around the drive drum 14 many times, a strong traction force is applied without slipping.

A pair of rails 10 is laid on a base (not shown) between the drive drum 14 and the barrier 8, and a slider 11 is provided to be able to reciprocate along the rails 10 in a direction opposite to the drive drum 14.
The auxiliary roller 16 is rotatably supported via its shaft 26. Also, this slider 1
A feed screw mechanism 12 is provided between the base and the drive drum 14 and the auxiliary roller 16 by operating the feed screw mechanism 12.
The tension on the wire 1 can be adjusted by adjusting the distance between the two wires. Therefore, there is no need to provide a separate tension pulley as in the past, and the device is miniaturized.

G. Effects of the invention According to the invention, members such as deflection rollers and tension pulleys can be omitted, thereby simplifying the structure and downsizing of the collision test apparatus. Furthermore, it is possible to reliably wrap the wire multiple times without increasing the size of the drive drum, increasing the traction force of the wire, preventing slipping, and increasing the degree of freedom in terms of the weight of the test object. It is possible to improve the accuracy of collision tests.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of a collision test device according to an embodiment of the present invention, Fig. 2 is a plan view of its driving drum portion, Fig. 3 is a side view of Fig. 2, and Fig. 4 is a conventional collision test device. It is a block diagram of a test device. Also, in the figures, 1 is a wire, 2 is a guide roller, 3 is a motor, 8 is a barrier, 10 is a rail, 1
1 is a slider, 12 is a feed screw mechanism, 14 is a drive drum, 14a is an annular groove, 16 is an auxiliary roller, 1
6a is an auxiliary annular groove, and 26 is a shaft.

Claims (1)

[Scope of utility model registration request] An endless wire is wound around a driving drum and a plurality of guide rollers that are installed on a base at a distance from each other, and the wire is rotated by rotating the driving drum, and the wire on the base is rotated. In a collision test device configured to cause a test object attached to the wire to collide with a barrier installed in the middle of a moving path, the device is provided so as to be able to reciprocate with respect to the base in a direction opposite to the drive drum. a slider, a feed screw mechanism provided between the slider and the base and capable of driving the slider in a direction opposite to the drive drum, and an auxiliary roller rotatably installed on the slider; The auxiliary roller includes auxiliary annular grooves formed at regular intervals on the outer peripheral surface of the auxiliary roller, and a plurality of annular grooves formed at regular intervals corresponding to these auxiliary annular grooves on the outer peripheral surface of the drive drum. A collision test device characterized in that a rotating shaft is inclined in accordance with the interval between these annular grooves, and the wire is wound around the annular groove and the auxiliary annular groove.