KR20020034621A - Device for testing upset of bus - Google Patents

Abstract

PURPOSE: A device for testing upset of bus is provided to measure rigidity by upsetting test of a finished bus. CONSTITUTION: A device includes a tilting supporter(18); tilting frames(22); a support block(12); and extension shafts. The tilting supporter comprises two legs. The tilting frames are rotatably installed to the tilting supporter by a hinge(20). The support block is separated from the tilting supporter at fixed interval to support the tilting frame. The extension shafts are joined to the hinge to extend gap between the tilting frames. Connective links are formed on one ends of the tilting frame to be connected with wire ropes(40).

Description

Bus Rollover Test Device {DEVICE FOR TESTING UPSET OF BUS}

The present invention relates to a bus rollover test apparatus, and more particularly, by providing a device capable of exclusively testing the bus rollover process, it is possible to grasp the rollover rigidity of the bus to improve the vehicle structure and to comply with the legal certification test. A bus rollover test apparatus that can be prepared.

Dividing the vehicle by the number of passengers, including a small RV vehicle that can accommodate a small number of people, one box car that can accommodate 7 to 15 people, and about 30 people There are various types of buses, from small buses that can board and large buses that can accommodate 40 or more people. In particular, buses are being upgraded with improved living standards, and many carriers tend to prefer high-quality large buses in terms of management.

Such buses have the advantage of transporting a large number of people at the same time, while in the event of an accident, it leads to a large accident, resulting in considerable human damage. In Korea, there have been attempts to grasp the rigidity when the bus is overturned.

In 1996, Korea's Daewoo Institute of Advanced Technology and the Automotive Performance Testing Institute jointly developed and tested a bus rollover test system, but this was only an evaluation of the rollover stiffness using a part of the frame structure of the bus, not a finished car. Therefore, the exact stiffness test for the finished vehicle is not made.

The present invention for solving the above problems can be utilized as the basic data of the structural improvement of the body by grasping the rigidity through the rollover test of the completed bus, and to provide a bus rollover test apparatus that can respond to the regulatory certification test itself. have.

1 is a side view showing a bus under test by the test apparatus of the present invention,

2 is a front view showing the bus under test by the test apparatus of the present invention,

3 is a plan view showing a bus rollover test apparatus according to the present invention,

4 is a side view of the test apparatus shown in FIG. 3;

5 is a front view of the test apparatus shown in FIG.

[Explanation of symbols on the main parts of the drawings]

10, 16: Ground plate 12: Support block

14: Lifter 18: tilting support

20: hinge 22: tilting frame

24: Top 26: Reinforcement rod

28, 32: extension shaft 30: connecting ring

40: wire rope

The bus rollover test apparatus of the present invention for achieving the above object is a tilting support consisting of two legs, a tilting frame rotatably installed on the tilting support by a hinge, spaced apart from the tilting support at a predetermined interval It includes a support block for supporting the low tilting frame, and an extension shaft coupled to the hinge to extend the interval between the tilting frame, one end of the tilting frame is characterized in that the connecting ring for connecting the wire rope is formed.

Hereinafter, a bus overturn test apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 show the test state of the bus rollover using the test apparatus of the present invention.

As shown in these figures, the wheel W of the bus B to be tested is mounted on the tilting frame 22. One end of the tilting frame 22 is rotatably supported on the tilting support 18 by the hinge 20, and the other end is placed on the support block 12. The upper plate 24 is placed on the tilting frame 22. Is placed. In addition, the wire rope 40 is connected to one end of the tilting support 18 adjacent to the support block 12, and when the wire rope 40 is pulled while maintaining a constant speed in the arrow direction P by a crane or the like, The tilting frame 22 is rotated on the tilting support 18 about the hinge 20 and overturned by its own weight when rotated over a predetermined inclination angle.

3 is a plan view showing the bus rollover test apparatus according to the present invention, and FIGS. 4 and 5 are side and front views of the test apparatus shown in FIG. 3, respectively.

As shown in these figures, when the overall configuration of the bus rollover test apparatus of the present invention, the tilt support (18) consisting of two legs and the hinge 20 is provided to be pivotally installed on the tilt support (18). The tilting frame 22, the support block 12 supporting the tilting frame 22 in a state spaced apart from the tilting support 18 at predetermined intervals, and the tilting frame 22 by being coupled to the hinge 20. It consists of extension shafts 28, 32 extending the spacing between them.

Here, the lower end of the tilt support 18 and the support block 12 is firmly fixed to the ground by the ground plate 16.

In this way, since the extension shafts 28 and 32 of appropriate length can be connected and tested between the two tilting frames 22, the overturning test of not only the small bus but also the large bus is possible. In addition, as is clearly shown in Figure 5, the tilting support 18 is composed of two legs, one of the legs is disposed inclined so that the tilting frame 22 can be rotated in only one direction (direction overturning). To make it possible.

And the support block 12 was provided with the lifter 14 which can adjust up-and-down height, and enabled the overturn test even in the place where the road surface is uneven. The vertical movement of the lifter 14 may use a mechanical structure by a screw structure or a motorized structure using hydraulic pressure and pneumatic pressure.

According to the present invention described above, it can be utilized as the basic data for the structural improvement of the vehicle body by grasping the rigidity through the rollover test of the completed bus and can respond to the certification certification test itself. In addition, the overturn test apparatus of the present invention adopts an extension shaft, which can be tested over all vehicle types, and is light in weight, easy to disassemble and assemble, and does not require a separate building or space for installing the test apparatus. By adopting this support block, there is an advantage that the test can be performed even in a somewhat uneven road surface.

Claims (2)

A tilting support 18 consisting of two legs, A tilting frame 22 rotatably installed on the tilting support 18 by a hinge 20, A support block 12 for supporting the tilting frame 22 while being spaced apart from the tilting support 18 at a predetermined interval; Is coupled to the hinge 20 includes extension shafts (28, 32) for extending the interval between the tilting frame (22), One end of the tilting frame 22, the bus rollover test apparatus, characterized in that the connecting ring 30 is formed to connect the wire rope 40. The method of claim 1, Bus support device, characterized in that the support block 12 is equipped with a height-adjustable lifter (14).