JP2546683Y2 - General-purpose leveling machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a general-purpose leveling machine for leveling a road and a square.

[0002]

2. Description of the Related Art There are known motor graders, loaders, bulldozers, etc., as leveling machines for leveling roads, leveling squares, and the like.

[0003]

[Problems to be Solved by the Invention] In recent years, urban construction such as roads and parking lots has increased, and accompanying this, the leveling of narrow roads and plazas has increased. . The loader and bulldozer are equipped with blades in front of the vehicle body, so they can be used for leveling narrow roads and squares. Therefore, it is not possible to make a good finish, but rather the unevenness of the ground is increased.

Therefore, an object of the present invention is to provide a general-purpose straightening machine which can solve the above-mentioned problem.

A front frame having front wheels, an intermediate frame which can be bent up and down, a rear wheel, and a rear frame having blades are connected.

[Operation] The intermediate frame can be bent up and down to make the wheelbase longer or shorter.

[0005]

[Embodiment] As shown in FIG. 1, a front frame 1, a first intermediate frame 2, a second intermediate frame 3, and a rear frame 4 are vertically moved by first, second, and third pins 5, 6, and 7, respectively. The cylinder 8 is swingably connected, and the first and second connecting pins 9, 1 are connected to the cylinder 8 over the first intermediate frame 2 and the second intermediate frame 3.
Intermediate frame 11 which is connected at 0 and can be bent vertically
Is composed. As shown in FIG. 2, a pin 13 is swingably connected to the front frame 1, and a front wheel 14 is attached to the front axle 12. A wheel mounting frame 15 is attached to the rear frame 4 by pins 16 so as to be vertically swingable. A pair of driving rear wheels 17, 17 are provided before and after the wheel mounting frame 15 to constitute a tandem driving wheel. The rear frame 4 is provided with a cab 18, a bonnet 19, an engine and a power line (not shown), and a blade 20 is attached to a front end of the rear frame 4 by a pin 21 so as to be vertically swingable. 4 and a lifting cylinder 22 is attached.

As shown in FIG. 1, when the cylinder 8 is extended and the intermediate frame 11 is elongated, the wheel base L is elongated, so that the vertical displacement of the blade 20 is smaller than the unevenness of the road surface, and the finishing accuracy of the ground level is improved. Can be improved. Further, when one of the front wheels 14 rides on the convex portion 23 as shown in FIG. 1 /
2, the vertical displacement of the blade 20 is ホ イ ー ル of the height H of the projection 23 because the blade 20 is located in the middle of the wheel base L. Similarly, when the rear wheel 17 rides on the projection 23 as shown in FIG. 4, the center vertical displacement Y of the wheel mounting frame 15 is １ ／ of the height H of the projection 23, and Since the height H is 1/4 of the height H of the projection 23, the vertical displacement of the blade 20 is 1/8 of the height H of the projection 23. Together, these further improve the leveling accuracy of the blade 20. When the vehicle moves, the cylinder 8 is contracted as shown in FIG.
1 is made shorter to make the wheelbase L shorter, the turning radius is made smaller and the overall length is made shorter so that it can be turned slightly. In the above embodiment, the rear wheel is of the tandem type, but the rear wheel 14 may be of a single type as shown in FIGS.

[0007]

If the intermediate frame 11 is lengthened by the cylinder 8, the wheel base can be lengthened to improve the finishing accuracy, and if the intermediate frame 11 is bent and shortened by the cylinder 8, the wheel base can be shortened to make the turning radius. It can be turned around with a short overall length and can be used on narrow roads and squares.

[Brief description of the drawings]

FIG. 1 is a front view of a general-purpose leveling machine.

FIG. 2 is an explanatory diagram of a front wheel mounting portion.

FIG. 3 is an explanatory diagram of an operation when a front wheel rides on the vehicle.

FIG. 4 is an explanatory diagram of an operation when a rear wheel rides on the vehicle.

FIG. 5 is a front view of a running state.

FIG. 6 is a front view of a single rear wheel general-purpose leveling machine.

FIG. 7 is a front view of a running state.

[Explanation of symbols]

1 front frame, 4 rear frames, 8 cylinders,
11 intermediate frame, 14 front wheels, 17 rear wheels, 20
blade.

Claims (1)

(57) [Scope of request for utility model registration] 1. A front frame 1 on which a front wheel 14 is mounted, and a rear frame 4 on which a rear wheel 17 and a blade 20 are mounted,
Intermediate frame 11 bent up and down by cylinder 8
General-purpose straightening machine characterized by being connected by