JP2000233776A - Elastic crawler belt for crawler and crawler traveling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a rigidity difference, to moderate a change in rigidity, and to reduce vibration by making the width directional center of a transversely installed reinforcing core body and a grounding top surface of a traveling lug are being eccentric. SOLUTION: In an elastic crawler 3, a grounding top surface 16C in a traveling lug 16 is extended by crossing the belt lengthwise direction by being made eccentric S in the belt lengthwise direction to the width center of a core body 9 in a width of the transversely installed reinforcing core body 9. Front/rear root edge parts 17A, 17B are extended by respectively crossing the belt lengthwise direction so that one edge part 17A exists in the width of the transversely installed reinforcing core body 9 and the other edge part 17B exists outside the width of the core body 9. A rigidity difference is reduced and a change in rigidity is moderated without thickening the lug root and without widening a core body width by dislocating the highest vertical rigidity part in the width direction of the core body 9 in an overlapping part of the core body 9 and the traveling lug 16. Thus, while maintaining rectilinearly running- through performance and turning performance in the traveling lug 16, earth removal performance is improved, and vertical vibration can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crawler elastic crawler track and a crawler traveling device, and is used for vehicles traveling on soft ground or upland such as a combine, a harvester, a transport vehicle, a snowmobile and the like.

[0002]

2. Description of the Related Art The inventor of the present application discloses a technique disclosed in Japanese Patent No. 2509213.
In Japanese Patent Laid-Open Publication No. HEI 10-125, an elastic crawler track for a crawler configured as follows is proposed. That is, "a lateral reinforcing core is buried at an interval in the longitudinal direction of the belt in an endless belt formed of an elastic material, and a driving engaging hole is formed in the belt between the lateral reinforcing cores. Further, on the grounding surface side of the band main body, in the one that integrally protrudes a lug having a trapezoidal cross-section extending in a direction intersecting with the band longitudinal direction of the band main body, the top surface of the lug adjacent in the band longitudinal direction is formed. ,
An oblique lug having left and right orthogonal lug top surfaces having edges perpendicular to the belt longitudinal direction and oblique lug top surfaces having oblique edges connecting the orthogonal lug top surfaces to each other. Thereby, on both the front and rear sides of the engagement hole, a discharging portion gradually expanding outward in the band width direction is formed,
An elastic crawler track for a crawler, wherein the discharging portions are arranged alternately in a staggered manner in a band width direction in a band longitudinal direction. "Suggested.

[0003]

The elastic crawler disclosed in the above-mentioned publication is useful as such, but has the following problems. First, since the running lug is composed of the orthogonal lugs and the oblique lugs, the formation of the running lugs is more troublesome than the orthogonal lugs, and there is also a problem in turning performance. In addition, the vertical stiffness of the crawler elastic crawler belt is maximized at the portion of the core metal and the running lug overlapping with the core metal, and the rigidity between the core metals is reduced. Had become. Increasing the width of the core bar to prevent this difference in rigidity causes an increase in weight and horsepower consumption.On the other hand, increasing the base width of the running lugs reduces the space between the lugs, which can cause mud clogging. Not only does it hinder running on soft ground, it is disadvantageous in terms of cost due to an increase in rubber material and productivity due to a prolonged vulcanization time.

[0004] The present invention reduces the difference in rigidity or reduces the change in rigidity by devising the arrangement relationship between the running lug and the metal core (core body) without increasing the base of the lug or widening the metal core. It is an object of the present invention to provide a crawler elastic crawler track and a crawler traveling device that are less likely to impair straight running performance and turning performance while moderately reducing vibration.

[0005]

According to the present invention, a lateral reinforcing core 9 is buried in a belt body 8 formed of an endless belt made of an elastic material at intervals in the longitudinal direction of the belt. Body 8
A traveling lug 16 extending in a direction intersecting in the longitudinal direction of the belt of the belt main body 8 is integrally formed on the grounding surface side of the belt, and the traveling lugs 16 are arranged at intervals in the longitudinal direction of the belt. The following technical measures have been taken in the elastic crawler to achieve the above-mentioned object. That is, in the crawler elastic crawler belt according to claim 1, the traveling lug 16 includes the front and rear root edges 1.
7A, 17B, kick surface 16A, support surface 16B, and both surfaces 16A, 16 protruding from edges 17A, 17B.
B is formed in a trapezoidal cross section having a grounded top surface 16C connected to the raised end of B. The grounded top surface 16C is within the width of the lateral reinforcing core 9 and the width of the core 9. The front and rear root edges 17A, 17B extend eccentrically in the band longitudinal direction S with respect to the center and intersect with the band longitudinal direction. Within the other edge 17
B is outside the width of the core body 9 and extends in a direction intersecting with the longitudinal direction of the band.

The crawler elastic crawler according to claim 2 is the same as the aforementioned claim 1, wherein the running lug 16 is
One end 16E in the rug extension direction is located in the middle of the left or right band width of the band main body 8, and the other end 16F is located on the outer edge of the left or right band width of the band main body 8. 8
In the longitudinal direction of the band. Further, the crawler traveling device according to claim 3, when the left and right pairs of the crawler elastic crawler belt 3 according to claim 1 or 2 are mounted on the traveling machine body 1, the eccentric S direction in the left and right crawler elastic crawler belts 3L, 3R. Are mounted so as to be left-right reversed with respect to the crawler traveling direction.

According to the elastic crawler belt and the traveling device configured as described above, the center in the width direction of the lateral reinforcing core 9 and the ground contact top surface 16C of the traveling lug 16 are eccentric S without being aligned with each other. Since one of the front and rear root edges 17A and 17B is outside the width of the core 9, the portion having the highest vertical rigidity in the overlapping portion of the core 9 and the running lug 16 is shifted in the width direction of the core 9. In addition, the rigidity thereof is gradually changed, so that the vertical vibration during the passage of the wheel 7 or the like is suppressed. As a result, it was formed, and the mud clogging phenomenon could be eliminated.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 3, there is shown an example in which a crawler elastic crawler belt 3 according to the present invention is used in a traveling device 2 of a traveling machine body 1 exemplified by a combine. The wheels (sprockets) 4, the driven wheels 5, and the rolling wheels (wheel bodies) 7 arranged in a row on the track frame 6 are wound endlessly so as to be able to circulate freely. Note that the traveling body 1 may be a harvester, a transport vehicle, or the like other than the combine, and the crawler elastic crawler belt 3 has a pair of left and right parts.

Referring to FIGS. 1 and 2, a first embodiment of an elastic crawler belt 3 according to the present invention is illustrated. 1 and 2, a band main body 8 made of rubber or other elastic material is formed in an endless band shape, and a horizontal reinforcing core 9 is arranged on the band main body 8 at intervals in the band longitudinal direction. The core body 9 is embedded, and the left and right seating portions 1 each having a flat wing shape are formed.
Numerals 0 are connected by a base 11, and a pair of left and right mountain-shaped projections 12 are formed on the base 11, and the left and right projections 12 protrude toward the side opposite (inside) the ground contact surface.

The core 9 is made of a casting, a hard resin, a sheet metal, or the like. The core 9 is buried at intervals in the longitudinal direction of the band, so that the base 11 of the core 9 is engaged with the engaging portion. A driving engagement hole 13 is formed at the center in the width direction of the band main body 8 so that the driving force is obtained by the nails of the driving wheel 4 being sequentially engaged and disengaged. On the left and right sides of the engaging hole 13, a rail surface 14 is formed in a belt longitudinal direction on the side opposite to the ground contact surface, and the trunk portion 7 </ b> A of the rolling wheel 7 is in contact with the left and right rail surfaces 14. In addition, the left and right projections 11 have a function of preventing wheel derailment.

The band body 8 has a thick central portion in the band width.
The left and right sides are thin, and the thick part has left and right seats 10
A pair of left and right tensile members 15 are embedded in the belt longitudinal direction on the grounding surface side. The front and rear root edges 1 are located on the contact surface side of the belt body 8.
Kick surface 16A and support surface 1 protruding from 7A and 17B
6B, and a running lug 16 having a trapezoidal cross section and having a flat grounding top surface 16C connecting (joining) the two surfaces 16A and 16B is integrally formed as a ridge.

The lateral reinforcing core 9 and the running lug 16 have the following relationship. That is, as shown in FIG. 1, the top surface 16 </ b> C of the running lug 16 is eccentric S in the longitudinal direction of the band within the width of the lateral reinforcing core 9 and with respect to the center of the width of the core 9. The front and rear root edges 17A, 17B are arranged such that one edge 17A is within the width of the horizontal reinforcing core 9 and the other edge 17A, 17B.
B extends outside the width of the core body 9 and intersects with the longitudinal direction of the band. More specifically, the contact surface 1
One edge 16D of 6C has an eccentricity S1 close to the width center of the core 9, and S and S1 are S> S1.
It has been.

By adopting such a configuration,
The difference in rigidity is reduced without increasing the lug base or increasing the width of the core body, and the change in rigidity is moderated to reduce vibration. Further, in FIG. 1, the running lug (16) has one end (16E) in the lug extending direction located on the left side in FIG. The outer edge of the band width of either of the left and right sides of the band body (8) is located on the right side in FIG.
Are arranged so as to protrude left and right alternately in the longitudinal direction of the band, and between every other traveling lugs 16 of the traveling lugs 16,
Wide discharge area 17L, 1 alternately on the outer edge of the belt width
7R is formed.

As a result, vertical vibration is reduced while maintaining the straight running performance and turning performance of the traveling lug 16 and improving the earth discharging property. Referring to FIG. 4, the crawler traveling device 2 shown in FIG. 2 has the eccentricity S in the left and right crawler elastic crawler belts 3L and 3R when the left and right pairs of the crawler elastic crawler belts 3 having the above-described configuration are mounted on the traveling machine body 1.
It is mounted so that the direction is left and right opposite to the crawler running direction. In the crawler traveling device 2, when the positional relationship between the traveling lug 16 and the core 9 becomes the same in the left and right elastic crawler tracks 3L and 3R, the vertical vibration becomes intense. By setting the S direction to the right and left in the crawler traveling direction in the forward / reverse direction (one is front, the other is rear), vertical vibration can be reduced.

FIGS. 5 and 6 show the second and third embodiments of the crawler elastic crawler belt 3 according to the present invention. The basic structure and operation are the same as those of the above-described first embodiment. , Common parts are denoted by common symbols, and only the differences will be described below. FIG. 5 shows that the running lug 16 is arranged as a central lug 116 having substantially the same length as the core body 9 on the core body 9 in the same relationship as in the first embodiment. The left and right lugs 116 have the same relationship as in the first embodiment.
L, 116R, and FIG. 6 shows an arrangement in which a central lug 116 having a horizontal single character and a running lug 216 having a full horizontal width having a single horizontal character are arranged in the same relationship as in the first embodiment.

In the crawler belt 3 in the second and third embodiments, it is of course possible to arrange this pair in the same manner as the crawler traveling device 2 shown in FIG.

[0017]

As described above in detail, according to the present invention, it is possible to reduce the vertical vibration without increasing the width of the core body and increasing the thickness of the base of the traveling lug, and to improve the straight running performance and the turning performance. And a crawler traveling device that is advantageous to the present invention can be provided.

[Brief description of the drawings]

FIG. 1 is a bottom view of a first embodiment when a part of an elastic crawler belt according to the present invention is viewed from a ground contact surface.

FIG. 2 is a sectional view of FIG.

FIG. 3 is a side view of a traveling body provided with a crawler traveling device.

FIG. 4 is a plan view showing a part of the traveling device of FIG. 3;

FIG. 5 is a bottom view of an elastic crawler belt showing a second embodiment.

FIG. 6 is a bottom view of an elastic crawler belt showing a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running body 2 Running device 3 Elastic crawler 8 Band main body 9 Core 16 Running lug

Claims (3)

[Claims] 1. A lateral reinforcing core body (9) is embedded in a band body (8) formed in an endless band shape from an elastic material with an interval in a longitudinal direction of the band, and the band body (8) is provided. A running lug (16) extending in a direction intersecting with the belt longitudinal direction of the band main body (8) is integrally formed on the grounding surface side of the band, and the running lug (1)
6) In the crawler elastic crawler belt in which 6) are arranged with an interval in the belt longitudinal direction, the running lug (16) has front and rear root edges (17A).
(17B), the kick surface (16A) protruding from the edges (17A) and (17B), the support surface (16B), and the ground top surface (16) connecting the protruding ends of both surfaces (16A) and (16B).
C) and has a trapezoidal cross-section, and the grounding top surface (16C) is within the width of the lateral reinforcing core (9) and with respect to the width center of the core (9). The front and rear root edges (17A) and (17B) have one edge (17A) that is eccentric (S) in the longitudinal direction of the belt. An elastic crawler track for a crawler, wherein the other edge portion (17B) is within the width of the body (9) and is outside the width of the core body (9), and each of the crawler tracks extends in a direction intersecting the belt longitudinal direction. 2. The running lug (16) has one end (16E) in the lug extending direction located in the middle of the left or right band width of the band body (8), and the other end (16F) at the band body (8). The running lugs (16) are arranged so as to protrude left and right alternately in the longitudinal direction of the band of the band main body (8). The crawler elastic crawler of the description. 3. The eccentricity (S) of the left and right crawler elastic crawler tracks (3L) and (3R) when the pair of left and right crawler elastic crawler tracks (3) according to claim 1 or 2 is mounted on the traveling body (1). C) A crawler traveling device which is mounted so that its direction is opposite to the left and right with respect to the crawler traveling direction.