JP2002234470A - Simple flat shoe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple flat shoe preventing breakage due to excessive force generated in traveling by earth and sand remaining between grouser shoes. SOLUTION: This simple flat shoe used in a crawler for a working machine is constructed by welding a plate 5 to a plurality of grouser parts 1a protruded to the tread side of the grouser shoe 1. The grouser shoe moving directional end face 5a in the plate 5 is not protruded to the adjacent grouser shoe side beyond an intersection position (a) of the bottom face 1b of the grouser part la in the end part of the grouser shoe 1 and an extension 9 of an adjacent grouser shoe side end face 1c in the grouser part 1a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple flat shoe which is used for a crawler of a working machine and is formed by welding a plate to a plurality of grouser portions projecting from a grouser shoe installation side.

[0002]

2. Description of the Related Art In a working machine such as a hydraulic excavator, a glow shoe as shown in FIG. 3A is used.
The grouser shoe 1 has a plurality of grouser portions 1 a on a ground contact surface, and is fixedly attached to a link 3 connected by pins 2 with bolts 4.

On the other hand, in a dismantling machine or the like using a crawler such as a hydraulic excavator as a base machine, a flat shoe having a flat grounding surface is used to prevent damage to a work surface (concrete surface or ground) due to grounding of the crawler. Can be As such a flat shoe, a simple flat shoe in which a plate 5 is welded to the bottom surface of a grouser shoe is used as shown in FIG. It is becoming. Such a simple flat shoe has an advantage that it can be realized at low cost by using the existing glow shoe 1. Conventional simple flat shoe
In order to expand the ground contact surface as much as possible, the plate 5 has a width protruding from the grocer portion 1a.

[0004]

In the conventional simple flat shoe described above, the distance W1 between the adjacent plates 5, 5 is smaller than the distance W2 between the grouser portions 1a, 1a of the opposing grouser shoes 1, 1. For this reason, it has a structure in which pebbles and earth and sand sandwiched between the hatched portions 6 between the grouser shoes 1 and 1 are difficult to escape. For this reason,
As the vehicle travels, the grouser shoe 1 is moved from the top (or bottom) of the crawler to the driving sprocket (or driven wheel).
, Or from the driving sprocket (or the driven wheel) to the lower part of the crawler (or the upper part of the crawler), deformation of the hatched portion 6 causes an excessive force to spread the link 3, 3, There was a possibility that breakage such as breakage of the link 3, cutting of the bolt 4, peeling of the shoe 1 or the plate 5, etc. might occur.

SUMMARY OF THE INVENTION [0005] In view of the above problems, an object of the present invention is to provide a simple flat shoe having a structure in which breakage due to excessive force generated during traveling due to soil and the like remaining between the grouser shoes is prevented.

[0006]

A simple flat shoe according to claim 1 is used for a crawler of a working machine, and is a simple flat shoe formed by welding a plate to a plurality of grouser portions protruding to the ground side of a grouser shoe. Wherein the end face of the plate in the moving direction of the grouser shoe is closer to the adjacent grouser shoe than the intersection of the bottom surface of the grouser section at the end of the grouser shoe and the extension line of the end face of the grocer section adjacent to the grouser shoe. It is characterized in that it does not protrude.

As described above, if the width of the plate in the traveling direction is reduced so that the plate does not protrude from the end face of the grouser portion, the earth and sand or the like that has entered between the adjacent grouser shoes can easily escape, and the gap between the grouser shoes can be reduced. It is possible to prevent an excessive force from being generated between the links during traveling due to earth and sand or the like.

According to a second aspect of the present invention, in the first aspect, the end face of the plate in the moving direction of the grouser shoe is closer to the grouser shoe than the extension of the grouser shoe side end face of the grouser portion at the end of the grouser shoe. It does not protrude to the shoe side.

In a grouser shoe usually manufactured by casting, the end face of the grouser portion is formed with an inclined surface, so that the structure according to claim 2 has a tapered space between the inclined surfaces. There is no plate, and it becomes easier to discharge the sediment that has entered the gap.

[0010]

FIG. 1 is an exploded perspective view showing an embodiment of a simple flat shoe according to the present invention, and the same reference numerals as those in FIG. 3 denote parts exhibiting equivalent functions. Reference numeral 7 denotes a boss fitted to the pin 2, which is engaged with a drive sprocket (not shown) constituting a crawler traveling body.
Reference numeral 8 denotes a nut, which is screwed into a bolt 4 passing through the grouser shoe 1 and a part of the link 3 to fix the grouser shoe 1 to the link 3. Reference numeral 5 denotes a plate welded to the grouser portion 1a of the grouser shoe 1.

FIG. 2A is an enlarged side view of the glow shoe shown in FIG. 1, and FIG. 2B is a partially enlarged side view thereof. As shown in FIG. 2 (B), both end faces 5a of the plate 5 in the traveling direction of the grouser shoe 1 in the traveling direction indicated by the arrow X are extension lines of the bottom face 1b of the grouser section 1a at the end of the grouser shoe 1. The width in the traveling direction is narrower than in the past, so that the structure does not protrude toward the adjacent grouser shoe 1 from an intersection 10 where the extension line 9 of the adjacent grouser shoe side end surface 1c of the grouser portion 1a to the plate side intersects. The width is formed.

As described above, if the width of the plate in the traveling direction is reduced so that the end surface 5a of the plate 5 does not protrude from the end surface 1c of the grocer portion 1a, the plate 5 is adjacent to the end surface 5a shown by the hatched portion 6 in FIG. Earth and the like that have entered between the grouser shoes 1 and 1 can easily escape, and it is possible to prevent generation of an excessive force for pushing and expanding the links 3 and 3 due to the earth and sand between the links 3 and 3. Further, with such a structure, the formation of the groove 11 for welding the plate 5 becomes easy, and the welding operation can be easily performed.

In the example shown in FIG. 2B, both end faces 5a of the plate 5 in the direction of movement of the grouser shoe are adjacent to an extension line 9 of the end face of the grouser shoe 1 at the end of the grouser shoe 1 adjacent to the grouser shoe 1a. The structure does not protrude to the grocer shoe side.

Since the grouser shoe 1 is usually manufactured by casting, the grouser portion 1a is formed in a tapered shape in order to facilitate the removal of the molded product and from the viewpoint of strength. For this reason, since the shape of the end face 1c of the grouser portion 1a of the grouser shoe 1 is formed as an inclined surface,
The plate 5 does not exist in the space of the tapered gap between the inclined surfaces 1c, 1c, and the sediment that has entered the gap is more easily discharged.

[0015]

According to the present invention, the width of the plate in the traveling direction is reduced so that the plate does not protrude from the end face of the grouser portion, so that the earth and sand or the like that has entered between the adjacent grouser shoes can easily escape. In addition, it is possible to prevent an excessive force from being generated between the links due to the earth and sand and the like, and to prevent breakage. Further, formation of a groove for plate welding is facilitated, and welding is facilitated.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a simple flat shoe according to the present invention.

FIG. 2 (A) is an enlarged side view of the embodiment of FIG. 1,
(B) is a partially enlarged side view of the same.

FIG. 3A is a side view of a conventional grocer shoe,
(B) is a side view of the simple flat shoe configured using the glow shoe of (A).

[Explanation of symbols]

1: Grocer shoe, 1a: Grocer portion, 1b: Bottom surface, 1c: End surface, 2: Pin, 3: Link, 4: Bolt,
5: plate, 5a: end face, 7: boss, 8: nut,
9: extension line, 10: intersection, 11: groove

Claims (2)

[Claims] 1. A simple flat shoe which is used for a crawler of a working machine and which is formed by welding a plate to a plurality of grouser portions projecting from a grounding side of a grouser shoe, wherein the plate is welded in a direction in which the grouser shoe moves. A simple flat shoe, wherein an end face does not protrude to an adjacent grouser shoe side from an intersection where a bottom surface of a grouser section at an end of the grouser shoe and an extension of an end face of the grouser section adjacent to the grouser shoe intersects. . 2. The simple flat shoe according to claim 1, wherein an end face of the plate in the moving direction of the grouser shoe is closer to an adjacent grouser shoe than an extension of an end face of the grouser portion adjacent to the grouser shoe at the end of the grouser shoe. A simple flat shoe characterized by a structure that does not protrude.