JPH04169383A - Rubber crawler belt - Google Patents

Abstract

PURPOSE:To prevent the removal of a crawler belt and improve the shear- resistant strength and adhesion peel resistance of the rubber crawler belt by providing inner and outer projections arranged nearly in parallel with rails on lengthy core plate metals with a pair of parallel rails protruded from the inner periphery of a rubber member buried in the ring belt-shaped rubber member. CONSTITUTION:A pair of parallel rails 11a, 11b protruded from the inner periphery surface of a rubber member 2 in the narrow-width direction nearly at the center section on one side face are provided on multiple lengthy core plate metals 1 adjacently buried in sequence in the lengthy direction of a ring belt- shaped rubber member 2 on a rubber crawler belt. Inner projections 14a and outer projections 15a arranged nearly in parallel with the rails 11a, 11b are provided at pin sections 13 provided between the rails 11a, 11b. The distance L1 between tips of the projections 14a, 14a on one side and the distance L2 between tips of the projections 15a, 15a on the other side are set to L2>L1 so that the inner projections 14a are pinched by the outer projections 15a. The removal of the crawler belt at the time of steering is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rubber track for a tracked vehicle such as a bulldozer or a power shovel.

[Prior Art] A conventional rubber 1111M is shown in FIG. 4, which is a partial front view, and
The rubber band is shown in FIG. 5, which is a sectional view of the same, and in the same figure, the rubber band is made up of a plurality of elongated cores that are sequentially embedded in the longitudinal direction of the ring-shaped rubber member 2 so that their narrow sides are adjacent to each other. Each of the sheet metals 1 has a narrow width direction approximately at the center of one side thereof,
The rubber member 2 includes a pair of parallel rails 11a and 11b protruding from the inner circumferential surface thereof. For more information,
The elongated core sheet metal 1 includes the above-mentioned rails IIa and 11b, and a pair of wing parts +2a embedded in the outer side of these parallel rails 11a and 11b and in both ends of the rubber member 20,
12b and a pin portion 13 provided between these rails 11a and 11b are integrally molded. Pin part 13
has a predetermined length at the center of the long core sheet metal 1. To summarize the above, each elongated core sheet metal 1 has a shape that is approximately symmetrical in the front, rear, right and left directions at the center of the pin portion 13. The other rubber member 2
To explain, the bottle portion 1 of the adjacent long core sheet metal 1
3.13, four parts or holes 21 of a predetermined shape are provided. Therefore, in the central longitudinal direction of the rubber N band, the number of recesses or holes 21 equal to the number of the long core metal plates 1 is provided at equal intervals. In addition, the wing portion 12a of the long core sheet metal 1,
A plurality of metal core wires 3 are embedded in the lower part of the rubber member 2 in the longitudinal direction of the rubber member 2 in order to increase the rigidity of the rubber member 2 and strengthen its shear resistance and adhesive peeling resistance.
The attachment of such a rubber track to a tracked vehicle and the running of the tracked vehicle will be explained. Although not shown, the rubber track is wrapped around the starting wheel and the guide wheel of the vehicle, and the rubber track is attached to the starting wheel and the guiding wheel. By being guided by a plurality of up and down wheels provided between the rubber track and the inner circumferential side of the rubber track,
Further, when the lower outer periphery of the rubber track comes into contact with the running road surface, the vehicle is caused to run by obtaining driving force from the starting wheel. That is, in the rubber crawler track, the drive teeth of the starting wheel are sequentially engaged with the bin portion 13 and the recess or hole 21, and the driving force is transmitted from the starting wheel, and the rails 11a and 11b are connected to the upper and lower wheels. 4 (and the guide wheels) and transfer them (see Figure 7). As a result, the rubber track transmits the weight of the vehicle to the road surface with an appropriate surface pressure, providing a strong traction force to the vehicle. , ensuring alignment to the rubber track.

[Problems to be Solved by the Invention] First, the origin of such rubber tracks will be described. Normally, crawlers refer to a combination of metal links and shoes. However, recently, tracked vehicles have been used in urban areas Rubber belts have become popular in place of the metal crawler tracks from the viewpoints of reducing noise due to increased operation, preserving paved roads, promoting health maintenance of operators, and extending the life of the vehicle. However, according to the above-mentioned conventional rubber crawler track, in order to strengthen the shear strength and the adhesive peeling resistance, there are Although a plurality of metal core wires 3 are buried, the rail 11a,
The rear elongated core sheet metal 1 whose lIb is in contact with the tread of the lower roller wheel 4 (and the guide wheel) has rails I]a and 11b that are not in contact with the road surface of the lower roller wheel 4 (and the guide wheel). A deviation δl occurs between the lead metal plate 1 and the lead metal plate 1 due to the frictional force F from the road surface. This deviation δ1 disturbs the alignment of the rubber track, causing the lower roller 4 to come off the rails 11a, 11b, causing the belt to come off, making it impossible to run. Furthermore, the repeated occurrence of the deviation δ1 causes problems such as peeling and cracking of the rubber belt, resulting in problems in terms of shear resistance, adhesive peeling resistance, and the like.

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the conventional technology, it is an object of the present invention to provide a rubber FF band that reduces deviation δl (and improves shear resistance and adhesive peeling resistance).

[Means for Solving the Problem] In order to achieve the above object, the rubber track according to the present invention has the following features:
Referring to FIG. 1, each of the plurality of elongated core sheet metals 1, each of which is embedded sequentially in the longitudinal direction of the annular rubber member 2 so that their narrow sides are adjacent to each other, In a rubber crawler track comprising a pair of parallel rails 11a and 11b protruding from the inner circumferential surface of the rubber member 2 in the narrow width direction at approximately the center of the side surface, a bin portion 13 provided between these rails 11a and 11b is provided. , an inner protrusion 14a and an outer protrusion 15a arranged substantially parallel to the rails 11a and 11b are provided,
Each of the long core metal sheets 1.1 provided with these protrusions is connected to the leading long core sheet metal 1 and the trailing long core sheet metal j. The structure is such that the rubber members 2 are sequentially embedded in the rubber member 2 so as to be sandwiched in the same direction.

[Function] The above configuration connects the inner protrusion 14a and the outer protrusion 15a to the bottle part I.
3, it is obtained by sequentially embedding in the rubber member 2 a long core sheet metal j arranged substantially parallel to the rails Ia and 11b. According to this configuration, the deviation δ2 between the rear elongated core sheet metal 1 and the front elongated core sheet metal 1 due to the frictional force F is caused by the contact between the outer direction of the inner protrusion 14a and the inner direction of the outer protrusion 15a (second (Fig. P), the deviation δ1 is much smaller than that of the conventional technology, the downward rolling width 4 allows smooth rolling on the rails 11a and 11b, and the amount of deformation of the rubber track is also small.

[Example] Examples of the rubber track according to the present invention will be described with reference to FIGS. 1 to 3. Fig. 1 is a partial front view with a cross section of a rubber crawler according to the first embodiment, Fig. 2 is a partial front view showing the rubber crawler when frictional force F is applied, and Fig. 3 is another embodiment. FIG. 1 is a diagram illustrating an example. The first embodiment is configured as follows in FIG. 1. A pair of internal protrusions 14a, 14a and bone protrusions 15a, 15a of the elongated core plate amount 1 are as follows:
Provided in the concave or hole 21 part of the pin part 13, - side 14a,
The relationship L2>Ll exists between the distance L1 between the tips of 14a and the distance L2 between the tips of the other side 15a and +5a. still,
Distance L1 between the tips of the internal processes 14a and 14a and the bone process 15a
, +5a, the larger the distance between the tips, the better, but when the rubber crawler gets caught up in the starting wheel and the guide wheel, it is important to leave a gap of 1 dimensional distance between them.
Seriously, we need to stop these contacts. Furthermore, the overlap L between the internal process 14a and the bone process 15a
3 must have a length sufficient to obtain a contact force equivalent to the frictional force F. First, the length of the elongated core plate 1.1 provided with the inner protrusions 14a, 14a and the bone protrusions 15a, 15a is in order: It is embedded in the rubber member 2, and in each of the lengths of the long core plates 1.1, the leading length 1 of the long core plates and the length of the rear length 1 of the long core plates are as follows. Protrusion 14a, 1
A gap δ3 is provided in 4a, and the structure is sandwiched. This gap δ3 is provided so that the inner direction of the bone protrusion 15a and the outer direction of the inner protrusion 14a do not come into contact with each other when traveling straight.This dimension can be adjusted at any time. One surface where the deviation δ2 between the sheet metal 1 and the leading elongated core sheet metal 1 is small, and the same part as FIG.
2 are denoted by the same reference numerals as those in FIG. 4, and a redundant explanation thereof will be omitted. First, another embodiment will be described.

In the adjacent elongated core plate amount 1.1 (first move 1, second move 1), the inner protrusion 14a and the bone protrusion 15a create a relative gap between the inner protrusion 14a and the bone protrusion 15a when the rubber crawler gets caught up in the starting wheel and the guide wheel. In order to have a In this case, when the rubber crawler gets caught up in the starting wheel and the guide wheel, in order to provide a relative gap between them, the inner protrusion 1
4 and the bone protrusion 15 are preferably provided close to the outer periphery of the rubber track.

The effects of the above embodiment will be described. According to the above embodiment, the deviation δ2 between the rear elongated core sheet metal 1 and the front elongated core sheet metal 1 due to the frictional force F is caused by the inner protrusion 14. Due to the abutment between the outer side of a and the inner side of the bone protrusion 15a (part P in Fig. 2), it becomes smaller than conventional rubber belts, and prevents the belt from coming off when the vehicle is running on a slope or when steering. At the same time, it is possible to improve shear strength and adhesive peeling resistance.

[Effects of the Invention] As explained above, according to the rubber track according to the present invention, the elongated core plate has an internal protrusion and a bone protrusion near the center thereof. Since these elongated core plates are sequentially embedded in the rubber member, it is possible to prevent the crawler from coming off when the vehicle runs on a slope or when steering, and improves the shear resistance and adhesive peeling resistance of the rubber crawler. You will be able to improve your

[Brief explanation of drawings]

FIG. 1 is a partial front view with a cross section of a rubber crawler according to a first embodiment of the present invention, FIG. 2 is a partial front view showing the rubber crawler when frictional force F is applied, and FIG. FIG. 4 is a partial front view of the pond embodiment, FIG. 5 is a sectional view thereof, and FIG. 6 is a front view of the rubber track when frictional force F is applied. Fig. 7 is a side view thereof 61 Long core plate amount 14a Inner protrusion +5a Outer protrusion 2 Rubber member applicant Co., Ltd./J1 Matsu Manufacturing Co., Ltd.

Claims (1)

[Claims] Each of the plurality of elongated core sheet metals 1, which are sequentially buried in the longitudinal direction of the annular rubber member 2 so that their narrow sides are adjacent to each other, is arranged in the narrow width direction at the approximate center of one side thereof. In a rubber track comprising a pair of parallel rails 11a and 11b protruding from the inner peripheral surface of the rubber member 2, a pin portion 13 provided between these rails 11a and 11b is arranged substantially parallel to the rails 11a and 11b. An inner protrusion 14a and an outer protrusion 15a are provided, and each of the elongated core sheet metals 1, 1 having these protrusions is connected to the elongated core sheet metal 1 of the leading hand and the elongated core sheet metal 1 of the trailing hand. A rubber crawler track characterized in that the protrusions 15a are sequentially embedded in the rubber member 2 so as to sandwich the inner protrusions 14a of the rear end 1 in the longitudinal direction.