JPH0635088U - Footwear for iron crawlers - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the separation of both ends of the rubber pad in the crawler width direction. [Structure] Reinforcing ribs 4 extending in the crawler width direction are provided on the tread surface 2A of the shoe 2 of the iron crawler, and a rubber pad is provided.
3 is a rubber shoe plate vulcanized and adhered.
Provide one or more 6 each.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rubber track plate for iron crawlers used in agricultural machines, construction machines, and the like.

[0002]

[Prior art]

 As shown in FIGS. 13 and 14, the iron crawler 10 is often used as an endless one by connecting the shoe links 12 connected to the shoe plate 11 with each other by the pins 13. The guide wheel 17 is wound around the mounted drive sprocket 15 and idler wheel 16 so that the guide wheel 17 rolls with respect to the upper edge of the shoe link 12. A shoe plate (also referred to as a shoe plate) is detachably attached to the lower surface of the shoe link 12 with a bolt 18.

By the way, the iron crawler has a drawback in that it is noisy, damages the pavement surface, cannot be speeded up, and has poor riding comfort. Conventionally, in order to solve the above problems of the iron crawler, a rubber shoe plate 20 has been proposed in which a rubber pad 19 is vulcanized and bonded to the tread surface of the shoe plate 11 as shown in FIGS. (See Kaihei 3-77794). Reference numeral 21 is a mounting bolt hole, and 22 is a reinforcing rib provided in the crawler width direction.

[0004]

[Problems to be solved by the device]

 The above-mentioned conventional rubber crawler plate 20 can make use of the advantages of the iron crawler and eliminate the disadvantages. In a pinch state, the end of the rubber pad is easily chipped or damaged, and water enters between the shoe tread at the end and the rubber pad to cause rust, which then enters the adhesive layer between the shoe and the rubber pad. However, it has not spread because of the problem of the rubber pad peeling off.

The present invention has been made in view of the above situation, and an object thereof is to improve peeling prevention by increasing the adhesive strength of the rubber pad at the end in the crawler width direction. To provide rubber footwear.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention takes the following technical means. That is, the present invention is a rubber shoe plate in which a reinforcing rib extending in the crawler width direction is projected on the shoe tread surface of an iron crawler, and a rubber pad is vulcanized and adhered, and the crawler is attached to each reinforcing rib of the shoe. It is characterized in that one or more notches are provided at both ends in the width direction.

Further, the present invention is a rubber shoe plate in which a reinforcing rib extending in the crawler width direction is projectingly provided on a shoe tread surface of an iron crawler, and a rubber pad is vulcanized and adhered, and the shoe crawler width direction of the shoe. One feature is that flat plate portions on both ends are provided with one or a plurality of notches, respectively. Further, the present invention is a rubber shoe plate in which reinforcing ribs extending in the crawler width direction are projected on the shoe tread surface of an iron crawler, and a rubber pad is vulcanized and adhered, wherein the rubber pad is at both ends of the shoe in the crawler width direction. It is characterized by covering the surface.

[0008]

[Action]

 According to the present invention, the adhesion surface area of the shoe with the rubber pad at the end in the crawler width direction is increased, so that the adhesive strength is increased, and the end portion of the rubber pad in the crawler width direction is stepped on even if a solid object such as stone or concrete is stepped on. Not only is it difficult to chip, but the pinch state can be eased and the rubber pad can be prevented from peeling. Therefore, rust does not occur in the adhesive layer.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 show a first embodiment of the present invention, in which a rubber shoe plate 1 is composed of a substantially rectangular metal shoe 2 and a rubber pad 3, and a tread 2A of the shoe 2 has a crawler width direction (shoulder). A plurality of (three in this example) reinforcing ribs 4 extending in the longitudinal direction are provided, and four mounting bolt holes 5 are provided in the central portion.

Each of the reinforcing ribs 4 of the shoe 2 is provided with one or a plurality of notches 6 at both ends in the crawler width direction, and a part 3A of the rubber pad 3 is also fitted to the notches 6. It is integrated with shoe 2 by vulcanization adhesion. The length L of the reinforcing ribs 4A remaining at both ends in the crawler width direction is 10 to 30 mm. If the length L is 10 mm or less, the rubber shoe plate 1 is liable to be chipped when a shock is applied, and if it is 30 mm or more, the effect of preventing end separation is weakened.

The rubber pad 3 is provided with holes 7 corresponding to the bolt holes 5 of the shoe 2 into which bolt heads or nuts can be fitted. In the first embodiment, since the part 3A of the rubber pad 3 is fitted in the notch 6 of the reinforcing rib 4, the adhesive area and the adhesive strength are increased and the rubber pad 3 is peeled from the end portion in the crawler width direction. This prevents the rust from entering and prevents the rubber pad 3 from falling off when stepping on stones, concrete pieces, etc.

FIG. 5 and FIG. 6 show a second embodiment of the present invention. The difference from the first embodiment is that the reinforcing ribs 4 of the shoe 2 are cut off without leaving ends at both ends in the crawler width direction. This is the point where the notch 8 is provided, and the length L1 of the notch 8 is 10 to 30 mm. If the notch length L1 is 10 mm or less, the effect of preventing cracks and cuts when a stone or concrete piece is stepped into a pinch state is diminished, and if it is 30 mm or more, the reinforcing effect is diminished.

According to the second embodiment, since there is no reinforcing rib 4 at the end of the rubber pad 3, the wall thickness becomes uniform and substantially thick, and the shock is absorbed even when stepping on a stone, concrete piece or the like. Thus, it is possible to prevent cuts, chips and peeling. 7 and 8 show a third embodiment (embodiment of claim 2) of the present invention, in which the shoe 2 of the shoe plate 1 is provided with a notch 9 in the flat plate portion between the reinforcing ribs 4 at both ends in the crawler width direction. The shape is characterized by the provision of semi-circle, square, trapezoid, semi-ellipse, etc.). In the third embodiment, both end portions of the rubber pad 3 in the crawler width direction are made to bite into the notches 9, so that the adhesive area and the adhesive strength are increased, and the rubber pad 3 can be prevented from peeling from the ends. It is also possible to reduce chips and cuts in a pinch state.

9 and 10 show a fourth embodiment (embodiment of claim 3) of the present invention, in which both ends of the shoe 2 of the track 1 in the crawler width direction are cut off to shorten the length thereof. It is characterized in that the end face 2B is covered with the end portion 3B of the rubber pad 3, and the thickness T of the end portion 3B is preferably 5 to 30 mm. If the thickness T is less than 5 mm, the rubber pad 3 does not have an end peeling effect, and if it hits a stone, a concrete piece, etc., it will be in a pinch state, resulting in cuts and chips. If the end thickness T exceeds 30 mm, the rubber pad end is bent (deformed) to reduce the ground contact area and increase the ground contact pressure.

Also in the fourth embodiment, it is possible to prevent the rubber pad 3 from peeling off, and it is possible to eliminate the pinched state of the end portion 3B of the rubber pad 3 and improve the durability. Furthermore, in the fourth embodiment, as shown by the chain double-dashed line in FIG. 9, the notch 9 as in the third embodiment can be provided at the outer end of the flat plate portion of the shoe 2, and the first and second embodiments can be provided. The notch 6 or 8 can also be used to enhance the peeling effect and the like.

11 and 12 show a fifth embodiment of the present invention, which is different from the fourth embodiment in that notches in the second embodiment are provided at both ends of the reinforcing rib 4 provided on the shoe 2 of the shoe plate 1. 8 is provided, and both ends of the rubber pad 3 in the crawler width direction have two layers on the front and back sides.The surface layers 3 and 3B of the rubber pad 3 are made of soft rubber (rubber hardness 65 to 75 °) with excellent wear resistance. The back layer 3C is made of hard rubber (rubber hardness 80 to 90 °) with little bending.

According to the fifth embodiment, in addition to preventing the rubber pad 3 from peeling off, it is possible to prevent the rubber pad 3 from being chipped or cut in a pinched state, thereby improving durability. Further, the back layer 3C may be mixed with cut fibers. Also in the first to fourth embodiments, as shown in FIG. 12, the rubber pad 3 can be composed of two layers, a front layer and a back layer.

[0018]

[Effect of device]

 As described above, according to the present invention, the shoe end is provided with the notch or the shoe end surface is covered with the rubber pad, so that the rubber pad can be prevented from peeling off from both ends in the crawler width direction, and rust can be prevented from entering. It is possible to prevent, reduce cuts and chips, increase adhesive strength, improve durability and the like.

[Brief description of drawings]

FIG. 1 is a plan view of a first embodiment of the present invention viewed from the ground plane side.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

4 is a cross-sectional view taken along the line CC of FIG.

FIG. 5 is a plan view of the second embodiment as seen from the ground plane side.

6 is a cross-sectional view taken along the line DD of FIG.

FIG. 7 is a plan view of the third embodiment seen from the ground plane side.

8 is a sectional view taken along the line EE of FIG.

FIG. 9 is a plan view of the fourth embodiment as seen from the ground plane side.

10 is a cross-sectional view taken along the line FF of FIG.

FIG. 11 is a plan view of the fifth embodiment as seen from the ground plane side.

12 is a sectional view taken along the line GG in FIG.

FIG. 13 is a side view showing the iron crawler mounted on the support frame of the work vehicle.

FIG. 14 is a partially enlarged side view of the iron crawler.

FIG. 15 is a plan view of a conventional rubber shoe plate as viewed from the ground contact surface side.

16 is a sectional view taken along line HH of FIG.

17 is a sectional view taken along line KK of FIG.

18 is a sectional view taken along line LL in FIG.

[Explanation of symbols]

 1 rubber track plate 2 shoe 2A shoe tread surface 2B end surface 3 rubber pad 4 reinforcing rib 6 notch 8 notch 9 notch

Claims (3)

[Scope of utility model registration request] 1. A rubber shoe plate in which reinforcing ribs extending in the crawler width direction are projected on the shoe tread of an iron crawler, and a rubber pad is vulcanized and adhered, wherein each reinforcing rib of the shoe has a crawler width direction. An iron crawler track plate, characterized in that one or more notches are provided at both ends. 2. A rubber shoe plate in which reinforcing ribs extending in the crawler width direction are projectingly provided on a shoe tread of an iron crawler and a rubber pad is vulcanized and adhered, and flat plates on both ends of the shoe in the crawler width direction are provided. An iron crawler track plate having one or a plurality of notches, respectively. 3. A rubber shoe plate in which reinforcing ribs extending in the crawler width direction are projectingly provided on a shoe tread surface of an iron crawler, and a rubber pad is vulcanized and adhered, wherein the rubber pad covers both end surfaces of the shoe in the crawler width direction. Footwear for iron crawlers characterized by covering.