JPS6260311B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized in that hard core materials are buried at regular intervals along the circumferential direction of the crawler, and the hard core materials are embedded at regular intervals along the circumferential direction of the crawler, and the hard core materials are embedded along the widthwise center or approximately the center position of the crawler to prevent the engagement with the driving rollers. The present invention relates to a structure of a crawler having a mating hole and a protrusion provided with a guide surface guided by a ground contact wheel.

In order to improve the propulsion performance in soft wetlands with the structure of the crawler described above, it is desirable to set the pitch of the lugs to be large so that a large amount of mud is wedged between the lugs.

However, if the lug pitch is simply set large, the ground support span of the aircraft will become large, and the aircraft load acting on the lugs during road running will become excessive, making the lugs more likely to be damaged early. Due to the position of the ground contact wheel, if the end of the crawler part located between the lugs runs onto a raised road surface or stone when driving on the road or on hard ground, the contact wheel position will become the fulcrum. As a result, the crawler bends and deforms in a dogleg shape in the width direction, leading to early damage and the problem of easy derailment.

The present invention has been made in view of the above-mentioned circumstances, and aims to suppress damage to the crawler and derailment of the contact side roller as much as possible in order to improve propulsion performance in soft wetlands. purpose.

The characteristic configuration of the present invention for achieving the above object is that, in the above-described crawler structure, the hard core material is extended to near both ends in the width direction of the crawler, and the outer circumferential surface of the crawler at the buried position of the hard core material is provided. A first elastic grounding body that supports both widthwise end portions of the hard core material to the ground, and a second elastic grounding body that supports a portion of the hard core material to the ground through which the grounding side rolling wheels pass are provided on each side, Forming a notch connected to the front and rear surfaces of both the elastic grounding bodies between the first and second elastic grounding bodies, and extending almost the entire width of the hard core materials located every few of the hard core materials, A hard propulsion lug, a portion of which faces the notch, is connected in a state in which the amount of protrusion thereof is smaller than the amount of protrusion of the first and second elastic grounding bodies, and both end portions of the hard propulsion lug are connected to the first elastic body. The intermediate portion is buried in the second elastic grounding body, and this configuration provides the following effects.

That is, hard propulsion lugs spanning almost the entire width are connected to hard core materials located every few of the hard core materials extending near both ends in the width direction of the crawler,
The hard core material located between the hard propulsion lugs has first and second elastic grounding bodies that support the both end portions of the core material and the passing portion of the grounding side rolling wheel to the ground, and between both elastic grounding bodies, an elastic grounding body is placed between the two elastic grounding bodies. Since it is provided to form a notch that connects to the front and rear surfaces, when driving on the road or on hard ground, the weight of the machine is distributed not only to the hard propulsion lug but also to the first and second elastic grounding bodies via the hard core material. Since the lugs are supported by the weight of the aircraft, damage to the lugs due to the weight of the aircraft can be suppressed, and when driving in soft wetlands, a large volume of underground parts can be trapped between adjacent hard propulsion lugs. In addition to improving propulsion performance by suppressing shearing from other parts of the underground part, the gap between adjacent hard propulsion lugs is wide, so mud that gets between the hard propulsion lugs sticks to the crawler and solidifies. As a result, slips are less likely to occur, and propulsion performance can be further improved.

Moreover, the hard core material that extends between adjacent hard propulsion lugs to near both ends in the width direction of the crawler,
When the part located between the hard propulsion lugs runs on a stone or the like when driving on the road or on hard ground, it suppresses the deformation of the crawler, effectively preventing derailment, minimizing damage to the crawler, and ensuring long-term use. In addition to being easy to use, since both ends and the middle part of the hard propulsion lug are covered with elastic grounding bodies, the entire aircraft can be elastically supported on the ground via the elastic grounding bodies, and the vibrations of the vehicle body due to driving can be reduced. This has made it possible to drive with good comfort.

In particular, when applied to a metal crawler, it has the advantage of eliminating the need for troublesome operations such as attaching and detaching the elastic body depending on whether it is traveling on the road or at a work site.

Next, embodiments of the present invention will be described in detail based on the drawings.

A drive roller 2 is provided at one end in the longitudinal direction of the truck frame 1, and a crawler tension roller 3 is provided at the other end. ... is provided, the wheel 2,
3, 4... are positioned at the center in the width direction, and a hard rubber crawler 5, which is an example of resin, is wound around the crawler 5.
A crawler traveling device is configured.

A hard core material 7 having a pair of left and right protrusions 6, 6 is embedded in the crawler 5 at a predetermined interval in the longitudinal direction, and a driving material is provided at the center position in the width direction of the crawler between the hard core materials 7, 7. Engagement holes 12 for the roller wheels 2 are formed, and the hard core members 7 protrude from the core member 7 toward the outer circumferential surface of the crawler over almost the entire length in the width direction of the crawler in the hard core members 7 at predetermined intervals. Let the hard propulsion lug 8...
is provided. Between the adjacent propulsion lugs 8, 8,
The outer wheels 4a, 4a of the ground-contact side rollers 4, which act to sandwich both the protrusions 6, 6 from both sides, are placed on the crawler 5 in a state corresponding to the core material 7, respectively. A second elastic grounding body 9 is provided protrudingly extending over both parts B, B on the back side of the acting part A, and is spaced apart from the second elastic grounding body 9, and at the lateral outside of each side. On the other hand, first elastic grounding bodies 10 and 1 are locally positioned near both ends of the core material 7.
0 is provided protrudingly to form a notch between the first and second elastic grounding bodies 10 and 9, and when traveling in a soft wetland, the crawler 5 is provided with a relatively large gap in the longitudinal direction. The lugs 8 are sufficiently dug into the ground, and the mud between the lugs is connected back and forth through the notches, so that the lugs can be properly propelled in a state where slips are less likely to occur. On the other hand, when traveling on the road, the crawlers 5 are positioned between the ground and both ends of the core material 7, respectively, and the first and second elastic grounding bodies 10, 9, and so on suppress buckling damage as much as possible. The crawler 5
Even if the vehicle tilts in its width direction, the elastic support of the first elastic grounding bodies 10 allows the vehicle to run near both ends of the core material 7 while avoiding pressure contact with the ground while concentrating the vehicle body load there. The structure is designed to prevent damage to the pavement surface caused by this.

In each of the propulsion lugs 8, the outer wheel 4a
Both rear side parts B and B corresponding to the acting parts A and A are buried in the second elastic grounding body 9, and both ends of each of the propulsion lugs 8 are buried in the first elastic grounding body 9. When driving on the road, the lugs 8 are configured to prevent direct contact with the paved surface, thereby better preventing vehicle body vibration and damage to the paved surface due to driving.

Note that the core material 7 is not limited to a so-called core metal made of metal, but may be made of hard resin.

The present invention is not limited to the resin crawler 5 used in agricultural machines such as combines as described above, but can also be applied to metal crawlers used in construction machines and the like.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the structure of the crawler according to the present invention, and FIG. 1 is a side view of the crawler traveling device, and FIG.
The figure is a partially cutaway plan view of the main part, FIG. 3 is a cross-sectional view taken along the line -- in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line -- in FIG. 2... Drive wheel, 4... Ground contact side roller, 5...
Crawler, 6...Protrusion, 7...Hard core material, 8...
Hard propulsion lug, 9...Second elastic grounding body, 10,1
1... First elastic grounding body, 12... Engagement hole.

Claims (1)

[Claims] 1. Hard core materials 7 are embedded at regular intervals along the circumferential direction of the crawler 5, and driving rollers 2 are buried along the widthwise center or approximately the center position of the crawler 5.
In the crawler structure, the hard core material 7
... are installed near both ends in the width direction of the crawler 5, and each of the outer circumferential surface side of the crawler 5 at the buried position of the hard core material 7 has a first elastic member that supports both end portions in the width direction of the hard core material 7 to the ground. The first and second elastic grounding bodies 9, 10, 11 are provided with the grounding bodies 10, 11 and a second elastic grounding body 9 that supports the part of the hard core material 7 through which the grounding side rolling wheels 4... pass on the ground. A notch is formed between the front and rear surfaces of both the elastic grounding bodies 9, 10, 11, and extends over almost the entire width of the hard core materials 7 located every few of the hard core materials 7. A hard propulsion lug 8, a portion of which faces the notch, is arranged in a row with its protrusion amount being smaller than the protrusion amount of the first and second elastic grounding bodies 9, 11, and both end portions of the hard propulsion lug 8 are provided. is buried in the first elastic body 11, and the intermediate portion is buried in the second elastic grounding body 9.