JP3956020B2 - Elastic pads for footwear - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elastic pad for footwear used in a tracked vehicle such as a bulldozer or a power shovel.
[0002]
[Prior art]
2. Description of the Related Art In recent years, track-type vehicles such as construction machines have used elastic pads for crawler plates that can be detachably attached to metal crawler plates used for crawler belts.
This elastic pad for footwear is made by vulcanizing and bonding an elastic pad such as rubber to the metal plate for pad, and it does not damage the road surface even when traveling on the paved road surface, and labor saving is achieved, It is widely adopted because it has the advantage of reducing vibration for the operator.
[0003]
FIG. 7 is a partial side view showing a crawler belt to which a conventional elastic pad for footwear is attached. In the figure, reference numeral 1 denotes an activation wheel, and the activation wheel 1 rotates in the direction of an arrow 2. Reference numeral 3 denotes a crawler belt. The crawler belt 3 is constituted by connecting a plurality of track links 4 in an endless manner by connecting pins 5. The crawler belt 3 is wound between the starting wheel 1 and a guide wheel (not shown), and is supported and rotated by a plurality of roller wheels (not shown). Reference numeral 6 denotes a metal shoe, and the metal shoe 6 is provided with a mounting through hole (not shown). Reference numeral 7 denotes an elastic pad for footwear, and the elastic pad 7 for footwear includes a pad metal plate 8 and an elastic pad 9. The pad metal plate 8 is provided with bolts (not shown). The elastic pad 9 is vulcanized and bonded to the pad metal plate 8.
When the crawler belt 3 is produced, bolts (not shown) provided on the pad metal plate 8 are attached to the through holes (not shown) for attaching the metal crawler plate 6 and the through holes for attaching the track links 4. After passing through a hole (not shown), a nut (not shown) is screwed into a bolt (not shown), so that the metal shoe 6 and the shoe pad elastic pad 7 are connected to the track link 4 (by the connecting pin 5). The crawler belt 3 can be created.
[0004]
[Problems to be solved by the invention]
However, in the crawler belt 3 to which the conventional crawler plate elastic pad 7 is attached, as shown in FIG. 8, when the clay-like earth and sand 10 adhere between the adjacent crawler-plate elastic pads 7 and 7, the clay-like earth and sand 10. When it moves to the outer peripheral surface of the starting wheel 1, it cracks and becomes divided clay-like earth and sand 10A, 10B. Therefore, the divided clay-like earth and sand 10A adheres to one of the footwear elastic pads 7, and the divided clay-like earth and sand 10B adheres to the other footwear elastic pad 7. Then, when the starting wheel 1 further rotates and the portion of the crawler belt 3 comes into contact with the ground as shown in FIG. 9, new earth and sand 10C is added between the divided clay-like earth and sand 10A and the divided clay-like earth and sand 10B. Then, when the starting wheel 1 further rotates and the portion of the crawler belt becomes parallel to the ground, the new clay 10S is inserted between the divided clay-like earth 10A and the divided clay-like earth 10B. The space between 10A and the divided clay-like earth and sand 10B becomes narrower. As a result, as shown in FIG. 10, adjacent elastic pads 9 are pressed as indicated by an arrow 11. When this state is repeated, the elastic pad 9 is cracked 12 or, as shown in FIG. 11, the end portions of the vulcanized and bonded pad metal plate 8 and the elastic pad 9 are peeled 13. Water enters the peeled portion 13 and rusting occurs. Then, the peeled portion 13 is enlarged, and there is a problem that the elastic pad 9 is detached from the pad metal plate 8.
[0005]
Therefore, the object of the present invention is to provide the elastic pads 16, 18 even if a new soil 10C is added between the divided clay-like earth 10 and the divided clay-like earth 10B adhering between the adjacent elastic pads 7, 7 for the footwear. No cracks occur, and no detachment occurs at the vulcanized and bonded portion, so that the durability of the elastic pads 15 and 17 for the footwear can be greatly improved.
[0006]
[Means for Solving the Problems]
The elastic pad for footwear of the present invention is provided with an elastic pad having a peripheral surface enclosing portion and a protruding portion, and a pad metal plate to which the elastic pad is vulcanized and bonded.
[0007]
The projecting portion projects from the surface facing the adjacent elastic pad, that is, the side surface portion of the elastic pad in a single piece, and comes into contact with a metal shoe plate on which the shoe pad elastic pad is mounted. And
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a partial side view showing a crawler belt equipped with an embodiment of an elastic pad for footwear according to the present invention, and FIG. 2 is a cross section showing a relationship between the elastic pad for footwear and the metal footwear of FIG. FIG. In the figure, reference numeral 15 denotes an elastic pad for footwear, and the elastic pad 15 for footwear is composed of an elastic pad 16 having a pad metal plate 8 and a peripheral surface enclosing portion 16A, as shown in detail in FIG. The elastic pad 16 is vulcanized and bonded to the pad metal plate 8 so that the peripheral surface enveloping portion 16A of the elastic pad 16 encloses the peripheral surface portion of the pad metal plate 8.
The pad metal plate 8 is provided with fixing bolts 8A.
When the crawler belt 3 is produced, the bolt 8A (see FIG. 2) provided on the pad metal plate 8 is passed through a mounting hole (not shown) of the metal crawler plate 6 and then a nut ( By screwing a bolt 8 </ b> A into the bolt 8 </ b> A, the footwear elastic pad 15 is integrally attached to the metal footwear 6 attached to the track link 4 (connected endlessly by the connecting pin 5). The crawler belt 3 can be created.
[0009]
Further, the elastic pad 16 provided with the peripheral surface enclosing portion 16A will be further described with reference to FIG. First, clay-like earth and sand adhere between adjacent pad elastic pads 15 and 15, and the clay-like earth is broken at the outer peripheral surface of the starting wheel 1 to become divided clay-like earth and sand 10 </ b> A and 10 </ b> B. Rotates further, and when that portion of the crawler belt 3 comes into contact with the ground, a new earth and sand 10C is added between the divided clay earth and sand 10A and the divided clay earth and sand 10B. When the starting wheel 1 further rotates and the portion of the crawler belt 3 becomes parallel to the ground, the divided clay-like earth and sand 10A is inserted with the new earth and sand 10C interposed between the divided clay-like earth and sand 10B. And the space | interval of the division | segmentation clay-like earth and sand 10B becomes narrow. As a result, the circumferential surface enveloping portion 16A of the adjacent elastic pad 16 is pressed, but the pressing can be received by the peripheral portion of the pad metal plate 8, so that the elastic pad 16 is cracked or vulcanized. Separation of the elastic pad 16 and the end of the pad metal plate 8 can be eliminated.
[0010]
4 is a partial side view showing a crawler belt equipped with another embodiment of the elastic pad for footwear according to the present invention, and FIG. 5 shows the relationship between the elastic pad for footwear and the metal footwear of FIG. It is sectional drawing. In the figure, reference numeral 17 denotes an elastic pad for footwear, and the elastic pad 17 for footwear, as shown in detail in FIG. 5, is an elastic having a metal plate 8 for padding, a peripheral surface enclosing portion 18A and a protruding portion 18B. The pad 18 is configured.
Then, the peripheral surface enveloping portion 18A of the elastic pad 18 encloses the peripheral surface portion of the pad metal plate 8, and the elastic portion 18B of the elastic pad 18 is in contact with the metal shoe 6 so as to abut on the elastic surface. The pad 18 is vulcanized and bonded to the pad metal plate 8.
When the crawler belt 3 is produced, the bolt 8A (see FIG. 2) provided on the pad metal plate 8 is passed through a mounting hole (not shown) of the metal crawler plate 6 and then a nut ( By screwing a bolt 8 </ b> A into the bolt 8 </ b> A, the footwear elastic pad 15 is integrally attached to the metal footwear 6 attached to the track link 4 (connected endlessly by the connecting pin 5). The crawler belt 3 can be created.
[0011]
Moreover, with reference to FIG. 6, the elastic pad 18 provided with this surrounding surface envelopment part 18A and the protrusion part 18B is further demonstrated. First, clay-like earth and sand adhere between the adjacent elastic pads 17 and 17, and the clay-like earth is broken at the outer peripheral surface of the starting wheel 1 to become divided clay-like earth and sand 10A and 10B. Is further rotated, and when that portion of the crawler belt 3 comes into contact with the ground, a new earth and sand 10C is added between the divided clay earth and sand 10A and the divided clay earth and sand 10B. When the starting wheel 1 further rotates and the portion of the crawler belt 3 becomes parallel to the ground, the divided clay-like earth and sand 10A is inserted with the new earth and sand 10C interposed between the divided clay-like earth and sand 10B. And the space | interval of the division | segmentation clay-like earth and sand 10B becomes narrow. As a result, the peripheral surface wrapping portion 18A of the adjacent elastic pad 18 is pressed in the horizontal direction, and the protruding portion 18B is pressed upward. This horizontal pressing can be received by the pad metal plate 8, and the upward pressing can be received by the metal shoe 6. For this reason, the elastic pad 18 can be cracked, or the elastic pad 18 vulcanized and bonded to the end of the pad metal plate 8 can be eliminated, and the protrusion 18B is pressed upward. The protrusion 18B is in close contact with the metal shoe 6 and serves as a shield, preventing water from entering and preventing rusting.
[0012]
【The invention's effect】
As described above in detail, according to the elastic pad for footwear according to the present invention, new earth and sand are added between the divided clay-like earth and sand and the divided clay-like earth and sand adhered between adjacent elastic pads for footwear. However, there is an effect that the elastic pad does not crack, and the vulcanized and bonded part does not peel off, and the durability of the elastic pad for footwear can be greatly improved.
[Brief description of the drawings]
FIG. 1 is a partial side view showing a crawler belt equipped with an embodiment of an elastic pad for footwear according to the present invention.
2 is a cross-sectional view showing a relationship between an elastic pad for footwear and a metal footwear of FIG. 1. FIG.
3 is a partial side view showing a crawler belt for explaining the effect of FIG. 1; FIG.
FIG. 4 is a partial side view showing a crawler belt equipped with another embodiment of the elastic pad for footwear according to the present invention.
5 is a cross-sectional view showing a relationship between an elastic pad for footwear and a metal footwear of FIG. 4; FIG.
6 is a partial side view showing a crawler belt for explaining the effect of FIG. 4; FIG.
FIG. 7 is a partial side view showing a crawler belt equipped with a conventional elastic pad for footwear.
FIG. 8 is a partial side view showing a crawler belt for explaining the problem of FIG. 7;
9 is a partial side view showing a crawler belt for explaining the problem of FIG. 7; FIG.
10 is a partial side view showing a crawler belt for explaining the problem of FIG. 7 in detail. FIG.
11 is a partial side view showing a crawler belt for explaining the problem of FIG. 7 in detail. FIG.
[Explanation of symbols]
3 Track 4 Track link 6 Metal track 7 Elastic pad for track 8 Metal plate 7 for pad
DESCRIPTION OF SYMBOLS 9 Elastic pad 10 Clay-like earth and sand 10A, 10B Divided clay-like earth and sand 12 Crack 13 Peeling 15, 17 Elastic pads 16 and 18 for footwear Elastic pads 16A and 18A Peripheral surface inclusion part 18B Protrusion part

Claims (1)

In a track of a track-type vehicle such as a construction machine, in the elastic pad for the track, which can be detachably attached to the ground surface side of the metal track of the track,
The elastic pad for a footwear plate is composed of an elastic pad having a peripheral surface wrapping portion and a protruding portion, and a pad metal plate to which the elastic pad is vulcanized and bonded, and the peripheral surface wrapping portion of the elastic pad is this An elastic pad for a footwear plate, comprising a peripheral surface portion of the metal plate for pad, wherein the protruding portion of the elastic pad protrudes in a cross-sectional shape from the side surface portion of the elastic pad and abuts on the metal footwear.

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