JPH0324647Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention provides anti-vibration rubber on the rolling wheels supported on the left and right sides of the vehicle body frame, and the rolling wheels are provided with anti-vibration rubber at approximately the center of the contact width of the rolling wheels. The present invention relates to a macadam type road roller having a vibrating device formed by arranging a vibrating device along a line.

Prior Art Conventionally, there has been no machine with a vibrating device for this type of roller. The reason for this is that with macadam-type road rollers, the rolling wheels are placed separately on the left and right sides of the vehicle body frame, so it would be difficult to install a vibrating device for these rolling wheels in terms of space. It is.

Problems to be Solved by the Invention The present invention has been developed in view of the above circumstances, and it is a vibration generator that effectively applies vibration force to the rolling wheel, has an excellent vibration-proofing effect, and is formed in a compact structure. A macadam type road roller having a device is provided.

Means and Effects for Solving the Problems The present invention includes rolling wheels that are pivotally supported on the left and right sides of one vehicle body frame, and a center pin that is connected to the vehicle body frame at an appropriate distance between the rolling wheels and the rolling wheels. In a center pin type macadam type road roller having a rolling pressure wheel that is pivotally supported on the other connected vehicle body frame,
The fixed side of the hydraulic motor that drives the rolling wheel is fixedly installed on the vehicle body frame, and the output side of the hydraulic motor is connected to vibration-isolating rubber that is disposed at both ends near the center line of the ground contact width of the rolling wheel. It is fixed to one end surface via a first structural member, and the other end surface of the vibration isolating rubber is fixed to or integrally with the disk disposed at the center of the rolling wheel and its width center line. A main body of a vibration generator that is fixed to a second structure and vibrates the rolling wheel is interposed between the disks, and a hydraulic motor that drives a vibration generator built in the main body is connected to a supporting member via rubber. According to the present invention, only the outer periphery of the rolling wheel protrudes from the outer end surface and is supported by the vehicle body frame.

With the above configuration, in the present invention, the vibration generated by the vibration generator is transmitted to the rolling wheel via the main body and the disk. Since this vibration is transmitted along the vicinity of the center line of the contact width of the rolling wheel, the vibration force is directly and effectively transmitted. Furthermore, since the anti-vibration rubber directly absorbs vibration force, it effectively reduces vibrations transmitted to the vehicle frame.

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

In the first embodiment, as shown in FIG. 1, rolling wheels 2 are supported on the left and right sides of a vehicle body frame 1, forming the front wheels of a road roller. Although not shown, a rear body frame is connected to the rear side of the body frame 1 via a center pin, and pivotally supports a rolling wheel to form a rear wheel side.

As shown in detail in FIG. 2, a vibration isolating rubber 3 and a vibration generator 4 are disposed within the wheel width of the rolling wheel 2. As shown in detail in FIG. That is, in FIG. 2, a fixed side 5a of a hydraulic motor 5 is connected to the vehicle body frame 1, and an output side 5b of the hydraulic motor 5 is connected to the fixed side 5a. Although not shown, hydraulic piping is connected to the fixed side 5a.

One end surface of the vibration isolating rubber 3 is fixed to the output side 5b of the hydraulic motor 5 via a structural member 6, and the other end surface of the vibration isolating rubber 3 is fixed to the rolling wheel 2 and a disk 7 arranged at the center of its width. It is fixed to the structural member 8. The vibration isolating rubber 3 is arranged approximately along the center line of the ground contact width of the rolling wheel 2. Therefore, the vibration isolating rubber 3 is disposed so as to pass through a window 7a formed in a portion of the disk 7. Note that a plurality of vibration isolating rubbers 3 are arranged along the same circumference.

The vibration generator 4 includes a main body 4a that includes a vibration generator (not shown), and a hydraulic motor 4b that drives the vibration generator.
It is formed from. The main body 4a is fixed to the disk 7 and is formed so that the vibration generating portion is arranged approximately along the center line of the ground contact width. The vibration generator 4 described above is a known technology, and a compact one is disclosed.

A rotary joint 9 made of known technology is connected to the hydraulic motor 4b via a seal 10. A hydraulic pipe (not shown) is connected to the rotation joint 9 to drive a hydraulic motor 4b.

One end of a support member 11 is connected to the rotation joint 9 via a rubber 12, and the other end of the support member 11 is connected to and supported by the vehicle body frame 1. Note that the support member 11 is disposed along the outer end surface of the rolling wheel 2 so as not to protrude from the outer end surface, and is arranged so as to slightly protrude from the outer end surface only near the outer periphery of the rolling wheel 2.

Next, the operation of this embodiment will be explained.

When the vibration section inside the main body 4a rotates due to the rotation of the hydraulic motor 4b of the vibration generator 4, a vibration force is generated, and the vibration force is transmitted to the rolling wheel 2 via the main body 4a and the disk 7.

Since the vibration generating portion is transmitted along the disk 7, that is, approximately the center line of the ground contact width, as described above, the vibration force is directly and effectively applied to the rolling wheel 2.
In the present invention, the vibration generator is arranged approximately on the center line of the contact width of the rolling wheel, but if the vibration generating part is not placed on the center line, a moment will act on the rolling wheel 2 and the vibration will occur. This is undesirable because it causes a problem that reduces the vibration force. In addition, in this embodiment, since the vibration isolating rubber 3 is disposed almost along the center line like the vibration generator, the vibration force is directly absorbed by the vibration isolating rubber, and is applied to the vehicle body frame 1 side. Vibration-proof rubber 3 effectively reduces transmitted vibrations.
Since no moment is applied to the motor, its life can be improved.

The hydraulic motor 4b is disposed on the outer end surface side of the rolling wheel 2, and is supported by the support member 11 with an extremely simple structure, so it is easy to install and remove.
Maintenance is also extremely easy. Note that the vibration of the vibration generator 4 is attenuated by the rubber 12 and transmitted to the vehicle body frame 1 side.

As described above, effective vibration excitation force can be generated with a simple structure, and vibration transmitted to the stationary side can be reduced due to the excellent vibration damping effect.

Further, the vibration isolating rubber 3 and the vibration generating device 4 are both housed within the rolling wheel 2, so that the remaining area of the rolling wheel 2 is made as small as possible.

Figure 3 shows the second embodiment.
Items with the same reference numerals as those in the drawings indicate the same items or items with the same function.

The second embodiment is different from the first embodiment in terms of a vibration generator, in which the vibration generator 40 includes a hydraulic motor 42 that rotates an excitation shaft 41, and a bearing 43 of the hydraulic motor 42.
The boss 44 is fixed to the disk 7 and pivotally supports the vibration generating shaft 41. Eccentric portion 41a of vibration axis 41
is arranged along the disk 7, that is, approximately along the center line of the contact width of the rolling wheel 2. In addition, the first
As in the embodiment, the hydraulic motor 42 is supported by the support member 11 via the rubber 12.

Similar effects can be achieved by the above structure.

In the second embodiment, the rolling wheel 2 is driven by a hydraulic motor 5.
However, it goes without saying that the driving means for the rolling wheel 2 is not limited to this. Furthermore, the vibration generators 4 and 40 are not limited to the above embodiments.

Further, although the vibration isolating rubber 3 and the vibration generators 4 and 40 are placed on the center line of the ground contact width, the same effect can be achieved if the vibration isolating rubber 3 and the vibration generators 4 and 40 are positioned substantially close to the center line.

Effects of the invention As is clear from the above explanation, the invention provides effective vibration to the rolling wheel, reduces vibration transmission to the non-moving side, has a simple structure, is easy to handle, and can be easily implemented. The effect you get will be increased.

[Brief explanation of the drawing]

FIG. 1 is a front view of one embodiment of the present invention, FIG. 2 is an enlarged partial front view of the embodiment, and FIG. 3 is an enlarged partial front view of another embodiment. DESCRIPTION OF SYMBOLS 1... Vehicle body frame, 2... Rolling wheel, 3... Vibration isolating rubber, 4, 40... Vibration generator, 4a... Main body, 4b, 5, 42... Hydraulic motor, 5a... Fixed side, 5b... Output side, 6, 8... Structural member, 7
...Disk, 7a...Window, 9...Rotating joint, 10...Seal, 11...Support member, 12...
...Rubber, 41... Vibration axis, 41a... Eccentric part, 4
3...Bearing, 44...Boss.

Claims (1)

[Scope of utility model registration request] A rolling wheel is pivotally supported on the left and right sides of one body frame, and a rolling wheel is pivotally supported on the other body frame, which is connected to the body frame via a center pin at an appropriate center distance from the rolling wheel. In a center pin type macadam type road roller having a wheel, the fixed side of the hydraulic motor that drives the rolling wheel is fixed to the vehicle body frame, and the output side of the hydraulic motor is located near the center line of the ground contact width of the rolling wheel. is fixed via a first structural member to one end face of vibration isolating rubbers disposed on both ends of the vibration isolating rubber, and the other end face of the vibration isolating rubber is disposed at a central portion of the rolling wheel and near its width center line. A main body of a vibration generator that is fixed to the disk or a second structure that is integrally fixed to the disk and that vibrates the rolling wheel is interposed between the disks, and a vibrating section built in the main body. A macadam type road roller having a vibrating device, characterized in that a driving hydraulic motor is supported by a support member made of rubber so as to protrude from an outer end face only at the outer periphery of the rolling wheel and supported by the vehicle body frame.