JP7203714B2 - Trailer for transportation of large circular goods - Google Patents

Description

Article 30, Paragraph 2 of the Patent Act is applied Published on August 1, 2019 by Japan Giant Tire Co., Ltd.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trailer for transporting large annular articles, and more particularly to a trailer for transporting extra-large tires for use in large-scale work vehicles in open-pit mines, for example.

2. Description of the Related Art When ore excavated in an open pit mine or the like is transported, working vehicles such as very large dump trucks are used. This large work vehicle is equipped with super-large tires having a diameter exceeding 3 m.

After such super-large tires are manufactured in a factory, they are transported by land from the factory to a site such as a mine or a port facility, where they are mounted on a super-large work vehicle. receive.

For example, for vehicles traveling on roads, various laws and regulations are established to ensure driving safety and smooth traffic, and there are regulations on the width and height of vehicles including loaded cargo.
Under current law, the width of a vehicle is limited to 2,500 mm for normal driving on roads, and the total height of a vehicle, including loaded cargo, is limited to 4,100 mm on deregulated designated roads, and generally not to exceed 3,800 mm. be.

Conventionally, when transporting super-large tires, it is often the case that a plurality of super-large tires with an outer diameter of, for example, 3550 mm are horizontally stacked on a low-floor trailer towed by a vehicle. In this case, although the total height of the vehicle can be kept within the limit value of the designated road, the width exceeds 3m, so a special permit must be obtained and the vehicle must be driven at night.

In addition, contact plates are placed at two opposite locations on the diameter of the super-large tire, and each contact plate is tightened using a bar or chain to compress the super-large tire and deform it from the free state, thereby making the tire A method of transporting super-large tires has been proposed in which the diameter of the tire is reduced so that it does not exceed the limit value for normal road driving, and the space required for storage in a warehouse or the like is reduced ( Patent document 1).

However, in the method described in Patent Document 1, when the outer diameter of the tire is reduced, distortion such as compression or tension occurs in the hard rubber material, and if the distortion remains, the strength during use may decrease. In order to reduce the outer diameter of a super-large tire, a strong force must be applied, and it is also necessary to prepare a special tool or the like.

On the other hand, the central part of the floor surface of the trailer towed by the tractor has a low-floor structure, and a plurality of storage boxes that store super-large tires vertically are mounted on the low-floor so that they can slide in the vehicle width direction. Each storage box has a three-dimensional shape with an open top and slanted front and rear walls. A trailer for transporting a large annular article has been proposed in which a suspended super-large tire is stored in a storage box and received by three-point support, and then the storage box is returned to its original position (Patent document 2).

JP-A-2003-72956 JP 2013-126862 A

The transport trailer described in Patent Document 2 is excellent in that it does not reduce the strength of the super-large tires and does not require preparation of special equipment for compressing the super-large tires.

By the way, a large dump truck is equipped with a plurality of extra-large tires, and when replacing extra-large tires, it is desirable to replace the left and right tires separately in terms of tire balance.
However, in the transport trailer described in Patent Document 2, each of the plurality of storage boxes is individually slid and returned, so it is necessary to individually slide and return each of the plurality of storage boxes, which is complicated. .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a trailer for transporting large-sized annular articles, which can slide and return a plurality of storage boxes at once, thereby greatly improving workability.

Therefore, the transportation trailer for large annular articles according to the present invention is a trailer for transporting large annular articles loaded and towed by a vehicle, and the center of the floor surface in the front-rear direction of the vehicle body has a low-floor structure. Left and right widening floors are provided on the low floor, and the left and right widening floors are structured to be slidable to the left and right in the vehicle width direction by a driving means, and storage boxes are respectively provided on the left and right widening floors. The storage box is mounted and fixed, and has a three-dimensional shape in which the upper surface is open and the front and rear wall surfaces are slanted so that a large annular article can be stored vertically with the ring-shaped outer surface facing forward and backward of the vehicle body. Receiving members whose front and rear positions can be adjusted by driving means are provided on the front and rear wall surfaces of the container so that the ring-shaped outer surfaces of large annular articles of different sizes can be received by adjusting the front and rear positions of the front and rear receiving members. It is characterized by being

One of the features of the present invention is that a wide floor surface is provided on the low floor portion so as to be slidable to the left and right, and the storage box is fixed to the wide floor surface.

As a result, the widened floor surface is slid in the vehicle width direction to expand, the fork of the forklift is inserted into the central hole of the large annular article to lift it, and after the large annular article is stored in the storage box, the widened floor surface is extended in the vehicle width direction. When it is slid back, it is possible to complete the loading of the large annular article onto the trailer, thereby eliminating the troublesome work of loading the large annular article.

In addition, when loading and unloading a large ring-shaped article from a trailer, a large forklift is used, and the fork is inserted into the center hole of the large ring-shaped article, lifted, stored in a storage box, lifted and removed from the storage box. By sliding the widened floor in the vehicle width direction, it is possible to open the space between the left and right storage boxes, so the tip of the fork does not interfere with the other large ringed goods, making cargo handling work using a forklift smooth. In addition, cargo handling work can be performed without requiring large-scale crane equipment or the like.

A second feature of the present invention resides in that the receiving member is rotatably attached to the front and rear wall surfaces of the storage box, and the angle of the receiving member can be adjusted by the driving means.

As a result, the ring-shaped outer surfaces of large annular articles of different sizes can be received, and the large annular articles can be stably stored in the storage box and transported without rattling.

1 is a diagram schematically showing a state in which tires are loaded in a preferred embodiment of a trailer for transporting large annular articles according to the present invention; FIG. It is a top view which shows the said embodiment. It is a rear view which shows the said embodiment. It is a figure which shows the plane and side of the low-floor part in the said embodiment. It is a figure which shows the back in the said embodiment. It is a figure which shows the storage box in the said embodiment. It is a figure which shows the receiving rod of the front-back wall surface of the storage box in the said embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. 1 to 7 show a preferred embodiment of a trailer for transporting large annular goods according to the present invention, which is an example applied to a trailer for transporting large tires. In the figure, a trailer 10 is composed of a gooseneck portion 11 connected to a tractor (not shown) to be towed, a rear floor surface 12 and a low floor surface (low floor portion) 13 therebetween. It is mounted and has wheels 14 supported on the axles.

A central main frame 15 is provided on the low floor portion 13 so as to extend in the longitudinal direction of the vehicle body, a side frame 16 is attached to the main frame 15, and a widening frame 17 is slidably attached to the outside of the side frame 16, A receiving plate 18 is attached to the widening frame 17 , and the widening frame 17 and the receiving plate 18 constitute a widening floor surface 19 . It is

Two storage boxes 21 are mounted in the width direction of the vehicle and two in the longitudinal direction of the vehicle body and fixed to the left and right widened floor surfaces 19 . The storage box 21 is composed of a side wall surface 21A, a bottom wall surface 21B and a front and rear wall surface 21C. It is formed in a three-dimensional shape that can be accommodated with the outer surface facing forward and backward of the vehicle body.

Further, the lower end of an arm 24 is rotatably attached to the front and rear wall surfaces 21C of the storage box 21, the upper end of the arm 24 is attached with a receiving rod (receiving member) 23, and the arm 24 is moved by a driving cylinder (driving means) 21D. is adjustable so that the receiving rod 23 can be displaced back and forth.

When transporting a large tire 22, the rod of the drive cylinder 20 is extended to slide the widened floor surface 19 of the trailer 10 outward in the vehicle width direction to create a space between the left and right storage boxes 21, while the forks of the forklift are moved. is inserted into the center hole of the large tire 22 and lifted, lowered into a storage box 21, and the large tire 22 is stored vertically with the ring-shaped outer surface in the longitudinal direction of the vehicle body.

Next, the drive cylinder 21D is actuated to advance the receiving rod 23 and press it against the annular outer surface of the large tire 22, whereby the large tire 22 is received at three points, the bottom wall surface 21B of the storage box 21 and the front and rear receiving rods 23. and stably stored in the storage box 21.

Similarly, other large tires 22 are also stored in the empty storage box 21 . At this time, since the storage boxes 21 adjacent to each other on the left and right are spaced apart, they can be stored smoothly without interfering with the large tires 22 already stored by the forks of the forklift.

When all the large tires 22 can be mounted on the trailer 10, the drive cylinder 20 is actuated to slide the widened floor surface 13 inward in the vehicle width direction. (e.g. 2500mm) or side-by-side mounting height within the typical height limit of 3800mm.

13 Low Floor Part 20 Driving Cylinder 21 Storage Box 21C Front and Rear Walls 21D Driving Cylinder 22 Large Annular Part 23 Receiving Member

Claims (3)

A trailer towed by a vehicle for loading and transporting a large ring-shaped article,
The center of the floor surface in the longitudinal direction of the vehicle body has a low floor structure, and the low floor portion (13) is provided with left and right widened floor surfaces, and the left and right widened floor surfaces are moved left and right in the vehicle width direction by a drive means (20). It has a slidable structure,
A storage box ( 21) is mounted on each of the left and right widened floor surfaces and fixed. ) has a three-dimensional shape that can be stored vertically with the ring-shaped outer surface in the front-rear direction of the vehicle body,
Receiving members (23) whose front and rear positions are adjustable by driving means (21D) are provided on the front and rear wall surfaces (21C) of the storage box (21). A transport trailer for large annular articles, characterized in that it can be adjusted to receive the annular outer surface of large annular articles (22) of different sizes. 2. The transport trailer for large annular articles according to claim 1, wherein two storage boxes (21) are provided in the width direction of the vehicle and two storage boxes are provided in the longitudinal direction of the vehicle body. A transport trailer for large annular articles according to claim 1, wherein said large annular article (22) is a large tire.

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