Material or article handling – Self-loading or unloading vehicles – With load-receiving portion – or significant section thereof,...
Patent
1990-09-18
1993-03-09
Werner, Frank E.
Material or article handling
Self-loading or unloading vehicles
With load-receiving portion, or significant section thereof,...
298 12, 414480, 384 42, B60P 132
Patent
active
051921898
DESCRIPTION:
BRIEF SUMMARY
FIELD OF TECHNOLOGY
The present invention is used in the field of car carrier trucks which are also utilized as dump trucks which fully tilt their load-carrying platforms and which effect loading and unloading of cars by longitudinally moving the load-carrying platform after tilting of load-carrying platform at a predetermined angle.
BACKGROUND OF THE INVENTION
There are generally provided car carrier trucks is described above as shown in FIGS. 50 and 51.
Referring to FIGS. 50 and 51, reference numeral 11 indicates a chassis, and a dump frame 12 is provided on the chassis 11.
At the rear end of the dump frame 12, there is provided a hinge bracket 13. The hinge bracket 13 is pivotably connected to the chassis 11 through a hinge shaft 14. Furthermore, a tilt cylinder 16 is provided between the chassis 11 and the dump frame 12 so that the dump frame 12 is tilted by elongation of the tilt cylinder 16.
On the dump frame 12 is mounted a cargo container 17 for carrying vehicles. A slide cylinder 18 is longitudinally provided between the dump frame 12 and the cargo container 17. Elongation of the slide cylinder 18 slides the cargo container 17 backward.
When the cargo container is slid backward, cargo container support legs 19 for the cargo container reach the ground to support the cargo container 17.
Conventionally, in order to insure that the cargo container 17 smoothly slides on the dump frame 12 without being derailed therefrom, an upper part of the dump frame 12 is inserted, as shown in FIG. 52, between a sectionally U-shaped main girder 22 mounted on the bottom of the cargo container 17 in the longitudinal direction and a subsidiary girder 23 provided inside of the main girder 22. An upper sliding pad 24 and a lower sliding pad 25 are fastened respectively to the upper and lower surfaces of the upper part of the dump frame 12 with bolts so that the subsidiary girder 23 is slidably supported on the upper sliding pad 24 and a lower portion of the main girder 22 slidably rests on the lower sliding pad 25.
In the conventional pad mounting structure, the upper and lower sliding pads 24 and 25 are fastened to the dump frame 12 with bolts. However, because the bolt fastening work for the lower sliding pad 25 is done in a narrow space, the positioning of the bolt holes is difficult and therefore the mounting operation or the replacing operation of the lower sliding pad 25 is difficult, which is a problem.
Therefore, a first object of the present invention is to provide a sliding pad mounting structure of a car carrier truck in which the mounting and replacement of a lower sliding pad is easy.
Furthermore, the above-described conventional car carrier truck has the following problems. Namely, the vertical distance between the load-carrying platform and the dump frame increases by the diameter of the cylinder, and consequently, an increase in the height of the load-carrying platform, taking the form of a cargo container is inevitable. As a result, in tilting the dump frame backward and sliding the load-carrying platform backward to bring it into contact with the ground, the tilt angle becomes large, resulting in that the slope of the load-carrying platform becomes steep and therefore difficult for construction vehicles to go up.
Moreover, although the distance between the load-carrying platform and the dump frame can be shortened by notching a traverse girder at a portion where the cylinder device is located, this causes a problem of lowering the strength of the load-carrying platform.
Therefore, a second object of the present invention is, in a car carrier truck which has a load-carrying platform supported on a sufficiently strong dump frame such that the load-carrying platform can be slid back and forth by a cylinder device, to prevent the tilt angle of the load-carrying platform from being too large when the dump frame is tilted, by making the height of the load-carrying platform from the ground small.
Furthermore, in a car carrier truck which loads vehicles by sliding the cargo container backward, individual su
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patent: 4660843 (1987-04-01), Hicks
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patent: 4929142 (1990-05-01), Nespor
Kuriyama Hiroaki
Maeda Yoshiyuki
Murata Masaichi
Ueda Kouzou
Yamashita Megumi
Kyokuto Kaikatsu Kogyo Co., Ltd.,
Werner Frank E.
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