Wheel substitutes for land vehicles – Tracks or treads – With detachable grouser for endless chain track
Patent
1996-11-18
1999-08-17
Stormer, Russell D.
Wheel substitutes for land vehicles
Tracks or treads
With detachable grouser for endless chain track
404 848, 298 18, 305201, B62D 5527
Patent
active
059383003
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a crawler-mounted slope traveling machine, which has a crawler-mounted base carrier to permit the crawler-mounted slope traveling machine to travel on a slope, and is, in particular, effectively applied to a construction machine which travels on a gentle slope for executing construction work, or a carrying machine which travels on a gentle slope for carrying construction materials.
BACKGROUND ART
A recently-developed slope strengthening method for strengthening an embankment slope to prevent the collapse of the embankment slope due to earthquakes or rainfalls includes the steps of mixing the soil and a solidifying material together for solidification of the soil while driving and advancing a drilling-mixing machine of an earth auger type or the like to excavate the ground, and constructing anchors in the central portion of the solidified soil.
In case of applying such a slope strengthening method to small-scale slope strengthening work for strengthening a gentle slope, materials have been conventionally carried by human power, and drilling and mixing work has been executed by a back-hoe type construction machine placed on a service road. On the other hand, in case of applying the same to relatively large-scale slope strengthening work, a temporary support structure for a construction machine has been constructed, and an earth auger-type construction machine has been placed on the temporary support structure for executing drilling and mixing work.
However, the conventional human-powered work has the following problems.
1 It is difficult for workers to freely move on a slope for carrying work or earthwork, the labor effectiveness of human-powered work is extremely low, and such work is very dangerous.
2 Human-powered work needs a long term of work and increases construction costs.
3 The back hoe-type construction machine is unable to be used when any service road is not available near the slope.
The construction of the temporary support structure has the following problems as well.
1 The construction of the temporary support structure requires an additional term of work and additional costs.
1 Materials for the temporary support structure must be carried by human power when any service road is not available near the slope, which causes problems similar to those attributable to human-powered work.
An alternative slope strengthening method may employ a crawler-mounted construction machine of an earth auger type which travels on a slope for direct slope strengthening work. Although current crawler-mounted construction machines are able to climb up and down slopes, such machines are unable to travel on slopes in horizontal directions (i.e., along contour lines of slopes), since shoe links of current crawler-mounted traveling machines are provided with only grousers (i.e., projections) extending perpendicularly to the advance direction of the shoe links. Further, the above current crawler-mounted traveling machines are unable to remain stable during operation and hence not applicable to such a slope strengthening method.
Usually, construction materials including earth and sand, concrete blocks, pipes and sheet piles or the like have been carried on slopes by the following methods.
However, these construction-material carrying methods have the following problems.
1 Only small and light materials are able to be carried, while large and heavy materials are unable to be carried.
2 It is difficult for workers to freely move on a slope, the labor effectiveness of human-powered carrying work is extremely low, and such carrying work is very dangerous.
3 A long term of work is required, a nd an increase in cost is inevitable due to the extremely-low labor effectiveness.
1 Although earth and sand are able to be conveyed, it is difficult to convey materials other than earth and sand.
2 It is difficult to install belt conveyors on slopes.
1 The labor effectiveness of carrying work is low in case of small and light materials as much as those are able to be carried by human power.
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Fukuda Kosei
Kami Chikashi
Miyasato Minoru
Yoshida Shigeru
Stormer Russell D.
Tenox Corp.
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