JPS6139666Y2 - - Google Patents

Description

[Detailed description of the invention] This invention aims to prevent muddy water adhering to long objects from entering the top surface of the turntable, and to prevent deterioration in the rotational performance of the liner and turntable. This relates to a frame for a trailer for transporting goods.

Conventionally, some trailers for transporting long objects such as utility poles and lumber have a structure in which a bolster for receiving long objects is set on the turntable on the top of the frame via a liner. Although it is widely used in practical applications because it is simple and inexpensive, the height difference between the turntable surface and the frame surface is not that great, and mud adhering to long objects can mix with rainwater and end up on the top surface of the turntable. This has the drawback that the lubricating oil and fats from the turntable and the liner and between the liner and the turntable are removed, resulting in a significant decrease in rotational performance.

This invention is a device that eliminates the above-mentioned drawbacks. In order to prevent muddy water from entering the turntable as much as possible, horizontal slits are provided in the front and rear frames of the turntable, making it easier to remove muddy water and making the turntable circular. The turntable is formed into a polygonal or circular shape to match the liner, and the turntable and liner are sized to be hidden within the length and width of the bolster, making it difficult for muddy water to enter.

Furthermore, it is also included in the present invention to provide a circular cover on the underside of the bolster to surround the outer periphery of the liner and turntable to further prevent the infiltration of muddy water.

To explain the present invention with drawings, the upper surface of the frame 3 of the drawbar 2 provided with the wheels 1 and the drawbar 2
In a trailer frame for transporting long objects, which is constructed by welding a polygonal or circular turntable 5 provided on a cross member 4 provided in A liner 8 rotatable around this bolster pin 7 is fitted. Further, a bolster 9 is coupled onto the liner 8 with a nut 10 through a bolster pin 7 so as not to come off.

Furthermore, like the liner 8, the bolster 9 is superimposed on the liner 8 so as to be rotatable about the bolster pin 7, and the external shapes of the turntable 5 and the liner 8 are smaller than the width and length of the bolster 9.

Next, a cross member of an angle 11 is provided at a position slightly apart from the cross member 4 on the lower side of the turntable 5. This creates a space between the cross member 4 and the angle 11, and a slit-like space 15,
15' to improve drainage of muddy rainwater.

Also, front end rail 12 and angle 1
1. Covers 14 and 14', which also serve as work platforms, are welded onto the rear end rail 13 and angle 11. Furthermore, in the present invention, as shown in FIG. 5, a cover 16 may be provided below the bolster 9 to surround the outer periphery of the liner 8 and the turntable 5.

Since the present invention is constructed in this way, the covers 14 and 14' also serve as scaffolding necessary for the work, and conventionally, mud that accumulates on the top surfaces of these covers gets mixed with rainwater and gets between the turntables 5. Although it was easy, the present invention allows rainwater mixed with mud to fall to the ground from the slit-shaped spaces 15, 15', making it very difficult for mud to enter. This is one of the most important improvement items of the present invention and is a unique effect.
In addition, since the liner 8 and turntable 5 do not protrude beyond the bolster 9, even if mud or muddy water from the load stacked on the upper part of the bolster 9 falls, it is difficult to enter the turntable 5, and the slit-shaped space 1
5, 15' to the ground, it has the effect of significantly improving the rotational performance of the turntable 9 compared to the conventional trailer frame 3 for transporting long objects.

As shown in FIG. 5, the circular cover 16 welded to the bottom surface of the turntable has a structure that makes it even more difficult for muddy water to enter the turntable 5 than the above structure, and this cover 16 is provided with dripping rubber or the like. This can further prevent muddy water from entering.

That is, the present invention provides slit-shaped spaces 15 and 15' at the front and rear of the turntable 5, which is rotatably provided on the frame 3 of a trailer for transporting long objects, so that the outer diameters of the turntable 5 and the liner 8 are aligned above the liner 8. Since the frame of the trailer for transporting long objects is made smaller than the outside diameter of the bolster 9 on which it is placed, it not only prevents rainwater mixed with mud from entering the turntable and the liner, but also allows the turntable to rotate smoothly. This has the effect of preventing the turntable from being worn out by rainwater and maintaining its durability.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway plan view of the invention, Fig. 2 is a side view of the same, Fig. 3 is a sectional view taken along line A-A of the above, and Fig. 4 The figure is a perspective view of the same as above, and FIG. 5 is a sectional view of an embodiment provided with a cover. 1 is a wheel, 2 is a drawbar, 3 is a frame, 4 is a cross member, 5 is a turntable, 6 is a boss,
7 is the bolster pin, 8 is the liner, 9 is the bolster,
10 is the nut, 11 is the angle, 12 is the front end rail, 13 is the rear end rail, 1
4, 14' is a cover that also serves as a work scaffold, 15, 1
5' is a slit-like space, and 16 is a cover.

Claims (1)

[Scope of utility model registration request] A slit-shaped space is provided in the width direction between the cross member and a cover that also serves as a work platform, and the outside of the turntable and liner is located at the front and rear of the turntable that is rotatably installed on the frame of the trailer for transporting long objects. A frame for a trailer for transporting long objects, characterized in that its diameter is smaller than the outer diameter of a bolster placed on a liner.