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Link structure bodies for track belt and link chain formed by connecting the link structure bodies

A structure and chain link technology, applied to tracked vehicles, motor vehicles, transportation and packaging, etc., can solve the problems of easy breakage and increased device volume, reduce cross-sectional area, simplify assembly operations, reduce overall volume effect

Inactive Publication Date: 2007-11-14
KOMATSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this crawler track assembly, since the track links 81 are connected to each other through the hinge parts 84, 85, the track links 81 integrated with the track shoes are prone to breakage due to twisting or bending when running on uneven roads, and the Reinforcement of each component will increase the volume of the device

Method used

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  • Link structure bodies for track belt and link chain formed by connecting the link structure bodies
  • Link structure bodies for track belt and link chain formed by connecting the link structure bodies
  • Link structure bodies for track belt and link chain formed by connecting the link structure bodies

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Embodiment Construction

[0094] Hereinafter, a crawler belt link structure and a crawler belt chain formed by connecting the link structure in a representative embodiment of the present invention will be specifically described with reference to the drawings. 1 to 3 show the link structure for a crawler belt in this embodiment. Fig. 4 is an exploded perspective view of main parts of a crawler using the link structure. This crawler device is used in an undercarriage 151 of a construction machine such as a hydraulic excavator as shown in FIG. 7 . In addition, in the following description, the side of the link structure shown in side view 3 which is fixed to the track shoe is defined as the lower side, and the upper side of the link structure in the figure is defined as the upper side. Also in the following description, left and right refer to the direction of the link structure shown in FIG. 2 in the horizontal cross-sectional view, where the upper part is right and the lower part is left.

[0095] The...

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Abstract

Link structure bodies for a track belt, which link structure bodies each can be easily assembled, reduced in cost, and is highly durable, and a link chain using the link structure bodies. Each link structure body is constructed by integrally forming the following: a left and right pair of link sections (10, 11) having, at their front and rear sections, first and second through-holes (10a, 11a, 10b, 11b); a tubular first connection section (13) for communicating the first through-holes (10a, 11a) of the pair of link sections (10, 11) with each other and connecting them; and a solid second connection section (14) for connecting to each other the center sections in the longitudinal direction of the pair of link sections (10, 11). A cross-sectional shape of the second connection section (14) is designed so that only the second connection section (14) carries all the sprocket load with the hollow first connection section (13) carrying no sprocket load.

Description

technical field [0001] The present invention relates to a link structure for crawlers and a chain for crawlers formed by connecting the link structures. Background technique [0002] A rail work vehicle such as a hydraulic excavator includes, as shown in FIG. 7 , a lower traveling body 151 , an upper revolving body 152 , and a working machine 153 attached to the upper revolving body 152 . The undercarriage 151 includes a crawler belt device 154 as a running device (traveling device). As shown in FIG. 8 , the crawler belt device 154 generally connects the two ends of a pair of left and right chain links 155 spaced apart from each other through connecting members 161 such as connecting pins 161 a , bushings 161 b , and washers 161 c to form a ring. Shaped chain 156. Track shoes 157 are respectively fixed to ground contact side support surfaces (track shoe support surfaces) of a pair of left and right links 155 of the chain 156 to constitute a set of crawler belts 158 (see Pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D55/21B62D55/205
CPCB62D55/202B62D55/26B62D55/21B62D55/18B62D55/205B62D55/253
Inventor 久松健一
Owner KOMATSU LTD
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