JP2000313372A - Rubber crawler and rubber crawler running device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rubber crawler and a crawler running device capable of eliminating or suppressing banking generated when it runs on a soft ground and sinks. SOLUTION: This rubber crawler 5 is constituted in such a way that running lugs 8 which rise are provided on a ground contact face side of a crawler main body 7 formed like an endless belt by a rubber material and the running lugs 8 are arranged across an interval in the longitudinal direction of the belt and are provided by sorting them to the left and right in the direction of belt width to form a soil discharge part 10 in the longitudinal direction of the belt. In this case, the soil discharge parts adjacent in the longitudinal direction of the belt are arranged like zigzag on the left and right sides by deviating phases in the direction of belt width so that they do not agree in the longitudinal direction of the belt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber crawler and a rubber crawler traveling device, and is used for an agricultural machine traveling on a field such as a combine or a harvester.

[0002]

2. Description of the Related Art In a self-removable combine which performs a series of operations such as cutting, removing and bagging while traveling in a field, a rubber crawler traveling device, particularly a front driven rubber crawler traveling device, is employed. . That is, the self-removing combine 1 shown in FIG. 8 includes a drive wheel (sprocket wheel) 2 and an idler wheel (idler) 3 in front and back, and a plurality of, in the figure, 1-4 A wheel 4 is provided on a track frame, and a rubber crawler 5 is wound around the wheel 4 to form a traveling device 6. The idler 3 is adjustable in tension as indicated by an arrow X.

The rubber track 5 shown in FIGS. 3 to 5 has been generally employed. The rubber crawler 5 shown in FIG. 3 is provided with a horizontal one-letter running lug 8 protruding from the contact surface side of a crawler body 7 formed in an endless belt shape by a rubber material, and the running lug 8 is attached to the crawler body 7 in the belt longitudinal direction. Are arranged on a core bar 9 buried with an interval. The rubber crawler 5 shown in FIG. 4 includes left and right running lugs 8 located on the left and right ends of the cored bar 9 and a discharging portion 10 formed between these lugs. Are arranged in the band longitudinal direction.

[0005] In the rubber crawler 5 shown in FIG. 5, when the ground contact portion rotates as indicated by the arrow Y, the left and right traveling lugs 8 are arranged in an oblique direction to form a soil discharging portion 10 at the center of the band width of the crawler body 7. 3 to 5, reference numeral 11 denotes a drive wheel 2.
Indicates an engaging hole that is disengaged.

[0005]

When a series of operations such as cutting, shedding, and bagging are performed by the combine 1 illustrated in FIG. 8, the field may be weak. When the work is performed in the soft field as described above, since the traveling device 6 supports the weight of the aircraft and advances the aircraft, the traveling device 6 may sink H in the field as shown in FIG. When the traveling device 6 sinks in this way, the mud immediately below is extruded to the side to form an embankment Q, and when the embankment Q is generated, the rice plant S is harvested from the middle T, so that the stump height remains high and However, it hinders the transfer and removal of the cut rice, and if the cutting blade enters the embankment Q, the cutting quality of the cutting blade deteriorates quickly.

In particular, in the rubber crawler 5 shown in FIG. 3, since there is no place for mud to escape immediately below, the height of the embankment Q is remarkable when it sinks. Further, the rubber track 5 shown in FIG.
Then, though there is a place for mud to escape through the discharging section 10,
The mud extruded forward through the discharging portion 10 is entirely pushed out to the side by the next traveling lug 8, and the engaging hole 1
There is also a problem that the mud clogging occurs and the reliable driving force by the driving wheel 2 is impaired. According to the rubber crawler 5 shown in FIG. 5, since the earth discharging portion 10 is connected in a straight line at the center of the band width, the engagement hole 11 is clogged with mud and only the reliable driving force by the driving wheel 2 is impaired. However, as shown by arrow Z, there is a tendency that the soil kicked out by the running lug 8 tends to escape (extrude) to the side, and the embankment Q becomes high.

In view of the above, the present invention suppresses the embankment during traveling on soft ground by devising the arrangement of the running lugs raised on the ground contact surface side of the crawler body, and ensures that the driving wheels are securely engaged with the engaging holes. The purpose is to be able to remove.

[0008]

According to the present invention, a running lug (8) is provided on a crawler body (7) formed in an endless band shape by a rubber material so as to protrude from a contact surface side of the crawler body (7). A rubber crawler 5 which is arranged and arranged left and right in the band width direction so as to form the earth discharging portion 10 in the band longitudinal direction, and in order to achieve the above-mentioned object, The following technical measures have been taken: That is, the rubber crawlers 5 according to claim 1 are characterized in that they are arranged in a staggered left and right direction with a phase shift in the band width direction so that the adjacent discharging portions 10 in the band longitudinal direction do not coincide with each other in the band longitudinal direction. It is assumed that.

As described above, adjacent (adjacent) in the longitudinal direction of the band.
The unloading portions (openings) 10 are arranged not in a straight line in the band longitudinal direction but in the band width direction and in a staggered left and right direction, so that the traction force by the traveling lug 8 is sufficient and the driving force is secured. A large traction force is assured by forming the running lug 8 into a horizontal one-letter shape, and when traveling on a soft ground, the embankment Q on both sides can be reduced even if the crawler body 7 sinks. In addition, it is desirable that the left and right traveling lugs 8 are arranged so as to collect the soil toward the discharging section 10 when the traveling lugs run around at the ground contact portion (claim 2).

As described above, by collecting the soil toward the earth discharging portion 10, even if the crawler body 7 sinks while traveling on a soft land, the embankment Q on both sides is reliably reduced. Further, it is recommended that a driving engagement hole 11 is formed in the center area of the band width of the crawler body 7, and the phase of the engagement hole 11 and the earth discharging portion 10 are shifted in the band width direction. (Claim 4). As described above, since the phase of the engaging hole 11 and the earth discharging portion 10 are shifted in the band width direction, mud clogging (blocking of the hole) in the engaging hole 11 is reduced, and Engagement and disengagement are ensured, and driving force (running ability on soft ground) is improved.

Further, in the rubber crawler traveling device according to the present invention, a driving wheel 2 and an idle wheel 3 are provided in front and rear,
A rubber track traveling device of a front drive type, comprising a plurality of rolling wheels (4) between three wheels, and a rubber track (5) wound around the driving wheel (2), the idle wheel (3) and the rolling wheel (4). 6
In this case, the mud immediately below the first wheel 4 is discharged from the earth discharging portion 10 of the traveling lug 8 to be grounded next in the body advancing direction (claim 5). With this configuration, most of the embankment Q from which the mud has been extruded to the side is generated immediately below the first rolling wheel 4, so that the front or a part of the mud is to be grounded next. Since the traveling lug 8 is discharged forward from the discharging portion 10, the embankment Q on both sides is hardly generated, which is advantageous.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. Note that portions (members) common to the configuration described above with reference to FIGS. 3 to 8 are denoted by the same reference numerals. FIG. 1 is a plan view showing a part of a first embodiment of a rubber crawler 5 according to the present invention. A crawler body 7 formed of an endless belt made of a rubber material has a trapezoidal cross section on the grounding surface side. The running lugs 8 are provided in a protruding manner with an interval in the longitudinal direction of the belt, and the running lugs 8 are sorted left and right in the width direction of the belt to form the earth discharging portion 10. ing.

The earth discharging portion (opening) 10 can also be formed by forming a cutout from the top surface of the running lug 8 in the longitudinal direction of the running lug 8. It also means sorting by notch,
At this time, the depth of the notch does not have to be the entire height of the traveling lug 8. Discharge part 1 adjacent (adjacent) in the belt longitudinal direction
Numerals 0 are arranged in a zigzag manner with the phases shifted in the band width direction so that they do not coincide with each other in the band longitudinal direction, and engaging holes (drive holes) 11 formed in the center portion of the band width of the crawler body 7.
Are also shifted in the band width direction.

That is, in the conventional example shown in FIG. 5, since the soil discharging portion 10 is provided in a straight line (continuously) in the longitudinal direction of the belt, the mud discharged through the soil discharging portion 10 is provided with a traveling lug. 8 is lost, while the discharge unit 10 of the present embodiment is out of phase in the width direction, so that the mud is held between the traveling lugs 8 to prevent the loss of the tractive force and to reduce the driving force. It is secured. Further, in the conventional example shown in FIG. 5, since the positions of the discharging portion 10 and the engagement hole 11 coincide with each other, the engagement hole 11 is easily clogged with mud. In this embodiment, since the engagement and disengagement are uncertain, the phase of the engagement hole 11 is shifted from that of the earth discharging portion 10 in the present embodiment, so that mud is more easily applied to the engagement hole 11 than in the conventional example (FIG. 5). The clogging is reduced, and here, not only the engagement and disengagement of the packing in the drive wheel 2 is ensured, but also the wear of the claws is reduced.

In the first embodiment shown in FIG.
The width A of 0 is the maximum width between the ground contact surfaces and the lug base (root) is narrow. It is overlaid on gold 9. FIG. 2 is a bottom view of the rubber crawler 5 according to the second embodiment of the present invention as viewed from the ground contact surface. When the crawler 5 rotates in the Y direction, the mud on the left and right traveling lugs 8 is The lags 8 are arranged so as to be collected in the X direction along the longitudinal direction, that is, to be collected at the discharging portion 10. Here, the left and right running lags 8 are oblique lags having an angle θ. Unlike the above-described first embodiment, other configurations and operations are common, and thus common portions are denoted by common reference numerals.

According to the second embodiment, since the mud is hardly extruded to the side and is collected toward the discharging portion 10, the embankment Q shown in FIG.
Does not occur or is low even if it occurs.
In FIG. 2, the left and right running lugs 8 are illustrated as having different lug lengths, but may have the same length. FIG. 7 shows the rubber track 5 according to the first and second embodiments described above in which the driving wheel 2 and the idler wheel 3 are used.
And a traveling device 6 according to the present invention wound around a plurality of (four rows in the figure) rolling wheels 4.

When traveling on a soft ground, the traveling device 6 sinks, mud is pushed to the side, and the embankment Q is generated immediately below the first wheel 4 (the wheel closest to the drive wheel 2). Is the most. Therefore, by forming the unloading part 10 on the traveling lug 8, the mud immediately under the weight of the machine body acting on the first wheel 4 is indicated by the reference symbol U from the unloading part 10 of the traveling lug 8 which is to be grounded next. As a result, the material is discharged forward in the traveling direction to prevent or suppress the occurrence of the embankment Q at the time of settlement.

As described above, since the occurrence of the embankment Q is prevented or suppressed, the height of the stump is reduced and the length of the cutting ear is lengthened even when cutting and removing work is performed using a combine or the like. As a result, the transfer and removal of the cuttings became smooth and reliable, and early damage to the cutting blades was prevented. Note that the rubber crawler and the traveling device according to the present invention can of course be applied to a harvester or the like other than the combine.

[0019]

As described above in detail, according to the present invention, even if the vehicle runs on a soft land and sinks, no embankment is generated or reduced.

[Brief description of the drawings]

FIG. 1 is a partial bottom view showing a first embodiment of a rubber track according to the present invention.

FIG. 2 is a partial bottom view showing a second embodiment of the rubber track according to the present invention.

FIG. 3 is a bottom view showing a part of one conventional rubber track.

FIG. 4 is a bottom view showing a part of a second rubber track of a conventional example.

FIG. 5 is a bottom view showing a part of a third rubber track of a conventional example.

FIG. 6 is a cross-sectional view showing a sunk state of a rubber track.

FIG. 7 is a side view of the front drive type rubber crawler traveling device according to the present invention.

FIG. 8 is a side view of a combine having a front drive type rubber track traveling device.

[Explanation of symbols]

 Reference Signs List 5 rubber crawler 7 crawler main body 8 running lug 9 core metal 10 earth removal part (opening part) 11 engagement hole (drive hole)

Claims (4)

[Claims] 1. A traveling lug (8) is provided on a ground contact surface side of a crawler body (7) formed in an endless band shape by a rubber material, and the traveling lug (8) is provided with an interval in a longitudinal direction of the belt. And a rubber crawler (5) which is arranged in the band width direction so as to be arranged left and right in the band width direction to form a soil removal portion (10) in the band length direction. A rubber crawler characterized in that the soil portions (10) are arranged in a staggered left and right direction with a phase shift in the band width direction so that they do not coincide in the band longitudinal direction. 2. The rubber according to claim 1, wherein the left and right running lugs (8) are arranged so as to collect soil toward the discharging portion (10) when running at the ground contacting portion. Crawler. 3. An engaging hole (11) for driving is formed in a central region of the band width of the crawler body (7).
The rubber track according to claim 1 or 2, wherein the phase of (1) and the earth discharging part (10) are shifted in the band width direction. 4. A drive wheel (2) and a free wheel (3) are provided in front and rear, and a plurality of rolling wheels (4) are provided between the two wheels (2) and (3). The rubber roller crawler (5) according to claim 1 or 2 or 3 is wound around the wheel (3) and the roller (4) to form a front drive type rubber crawler traveling device (6). A rubber crawler traveling device characterized in that mud immediately below the wheel (4) is discharged from a discharging portion (10) in a traveling lug (8) to be grounded next in a body traveling direction.