JPH0510442B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a wheel support device for wheels disposed on the left and right sides of a frame, such as a macadam type road roller, to rotate along the slope of the ground. The present invention relates to a rolling machine having a tilting mechanism formed therein.

BACKGROUND ART As is well known, some rolling machines have a shape in which rolling wheels are arranged on the left and right sides of a frame. The rolling wheel support device of this type of rolling machine is a support device that supports the rolling wheel via a bearing on an axle that is fixedly supported on a frame, or a support device that supports the rolling wheel via a bearing on an axle that is fixedly supported on a frame. A drive shaft was provided, and a device for supporting a rolling wheel was attached to the drive shaft. but,
These rolling support devices are fixedly supported on the frame, so there is no particular problem when rolling flat, uniform ground with no slope, but rolling on sloped surfaces and uneven surfaces, etc. In this case, the ground and the rolling wheel only partially contact each other, and therefore, uniform compaction cannot be achieved, and there are also disadvantages such as the occurrence of left-over areas and insufficient flatness.

In this type of rolling machine, between adjacent rolling wheels, the shaft that supports the shaft of the rolling wheels is
An arrangement for pivotally mounting a rolling wheel is described, for example, in U.S. Pat. No. 3,636,835.
However, in this configuration in which the shaft of the rolling wheel is pivoted between adjacent rolling wheels, the wheel motor is attached to each rolling wheel disposed on the left and right sides of the frame, as in the present invention. Fix the output side and attach the base end side of this wheel motor to the frame side,
It is technically difficult to apply this method to a rolling machine in which each rolling wheel is rotationally driven by a wheel motor, and therefore cannot be adopted.

Problems to be Solved by the Present Invention The present invention is mechanically very compact, and
The present invention provides a wheel support device for a rolling machine that can achieve uniform compaction through uniform loads, improve flatness, and improve rolling efficiency when rolling slopes, uneven surfaces, etc.

Means for Solving the Problems and Their Effects For this purpose, the present invention fixes the output side of a wheel motor to the rolling wheels arranged on the left and right sides of the frame, and fixes the output side of the wheel motor to the rolling wheels arranged on the left and right sides of the frame, and In the rolling machine which is attached to the frame side and rotates each rolling wheel by a wheel motor, each of the rolling wheels rotates along an inclination of the ground with respect to the axial direction of the rolling wheel. The base end side of the wheel motor is pivoted to the frame side approximately on the center line of the ground contact width of each rolling wheel so that the rolling wheel rotates along the slope of the ground. This improves uniform compaction and flatness, and improves compaction efficiency.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

Figure 1 shows a side view of a macadam type road roller.

The rolling wheel 2 is supported by the front frame 1 defined by a center pin 9 as described later.

Figure 2 is a - cross section of Figure 1 (horizontal direction of the ground)
Of these, one of the rolling wheels 2 provided on the left and right sides of the front frame 1 is shown, and similar rolling wheels 2' (third
) are also arranged on the other side of the front frame 1.

The tilting mechanism 3 has one end fixed to the front frame 1 and a support base 5 formed through a hole 4 disposed opposite to the other end, a pin 6 fitted into the hole 4, and a support base 5 that rotates the pin 6. It is formed of a ring 7 that supports the pressure ring 2 side, a bearing 8 that is fitted into the hole 4 of the support base 5, and that pivotally supports the pin 6.

A center line connecting the centers of the holes 4, 4 is formed in a direction parallel to the ground contact surface of the rolling wheel 2 and perpendicular to the rotation axis of the rolling wheel 2. Further, the center point of the hole 4 is arranged approximately on the center line of the contact width of the rolling wheel 2.

As mentioned above, a bearing 8 is interposed between the hole 4 and the pin 6 fitted into the hole 4. Although the bearing 8 is preferably a spherical bearing as shown in the figure, it may also be a cylindrical bushing, for example. .

The ring 7 is located on the base end side 10b of the wheel motor 10.
is connected to the output side 10a of the wheel motor 10.
is fixed to the rolling wheel 2. Although not shown, a hydraulic pipe (formed flexibly) is connected to the base end side 10b, and the wheel motor 10 is driven by pressure oil from a hydraulic pump (not shown) to rotationally drive the rolling wheel 2.

Next, the operation of this embodiment will be explained.

For example, as shown in Fig. 3, when rolling the vicinity of the top of the sloping ground 12 with a rolling machine, the left and right rolling wheels 2, 2' (the same ones on the target side are indicated by dash symbols) are pinned. 6, 6' as the center and slope along the slope. In this state, the rolling wheels 2, 2' are rotationally driven by the wheel motor 10, so that the ground 12 is compacted uniformly and rolled flat.

Furthermore, as described above, according to the wheel support device of the present embodiment, it is possible to uniformly roll compact the vicinity of the top of the slope along the slope, so that the compaction work efficiency can be improved and the undesired part can be eliminated. The effect of

By arranging the center position of the pins 6, 6' approximately on the center line of the contact width of the rolling wheels 2, 2', rolling pressure reaction force is applied to the center position of the pins 6, 6', and the rolling wheels 2, 2' It is possible to eliminate an unreasonable moment from being applied to the frame 1 side from 2'.

Of course, tilting mechanisms off-center can also be formed. For example, it is possible to form a tilting mechanism in the front frame 1 and hold the rolling wheels 2, 2' in a horizontal state using a spring or the like.
Not only does the structure become complicated, but irregular rocking occurs when transitioning to an inclined surface, which adversely affects the road surface.

From the above, the tilting mechanism
It is necessary that the center line be placed approximately along the center line of the

Note that the means for connecting the support stands 5, 5' and the wheel motor 10 side is not limited to the above-described one.

Effects of the Invention As is clear from the above explanation, according to the present invention, the output side of the wheel motor is fixed to the rolling wheels disposed on the left and right sides of the frame, and the base end side of the wheel motor is fixed to the rolling wheels disposed on the left and right sides of the frame. Installed on the frame side,
In a rolling machine where each rolling wheel is rotationally driven by a wheel motor, a tilting mechanism is installed approximately on the center line of the ground contact width of each rolling wheel, so the tilting mechanism is installed on the entire width of the rolling wheel against the slope of the terrain. It is possible to make contact with the ground and perform rolling with a uniform load, and the inclined surface is compacted uniformly, flattened and rolled smoothly, and the effect of improving rolling efficiency is achieved. Furthermore, although it has a tilting mechanism, the rolling wheels are connected to the drive source, resulting in a very compact configuration and a reasonable power transmission. In addition, it is possible to obtain a rolling compaction machine that is completely free from problems in terms of production and assembly as well as maintainability.

[Brief explanation of the drawing]

Fig. 1 is a side view of a macadam type road roller to which an embodiment of the present invention is applied, Fig. 2 is a partial sectional view taken along the line -- in Fig. 1 showing an embodiment of the present invention, and Fig. 3 is a side view of a macadam type road roller to which an embodiment of the present invention is applied. It is a front view explaining an effect|action. 1...Front frame, 2, 2'...Rolling wheel, 3
...tilting mechanism, 4,4'...hole, 5,
5'... Support stand, 6, 6'... Pin, 7... Ring, 8... Bearing, 9... Center pin, 10...
Wheel motor, 10a...output side, 10b...
Base end side, 11... Seal, 12... Ground.

Claims (1)

[Scope of Claims] 1. The output side of a wheel motor is fixed to respective rolling wheels arranged on the left and right sides of a frame, and the base end side of this wheel motor is attached to the frame side,
In a rolling machine in which each rolling wheel is rotationally driven by a wheel motor, each rolling wheel is rotated so that each rolling wheel can rotate in the axial direction of the rolling wheel following the slope of the ground. 1. A wheel support device for a rolling press machine, characterized in that a base end side of a wheel motor is pivotally supported on the frame side substantially on the center line of a ground contact width of a press ring.