Kabushiki Kaisha Komatsu Seisakusho

Koji Ogaki

Masashi Kaminishi

Katsu Hirosawa

Yukio Tamura

Hiroshi Kakuta

Akio Aoki

Yoshinori Nozawa

Tomoo Matsuda

Shigetake Akanuma

Takuya Sakamoto

Yoshitaka Ojiro

Shigeru Harada

Kimihiko Takagi

Yoshinori Takata

Yoshinori Takada

Disaster relief robot and operation controller therefor

For splitting rock, concrete structures, etc., by being inserted into a drill hole created therein, a rock splitter has a wedge coupled at its thick end to the output shaft of a hydraulic cylinder. Lying on opposite sides of the wedge, a pair of guides are yieldably held against the wedge to allow longitudinal sliding motion thereof. Two pairs of opposed leaf springs connect the wedge guides to the hydraulic cylinder to restrain the guides from longitudinal displacement and to allow same to move away from and toward each other with the longitudinal sliding motion of the wedge. The pair of wedge guides, together with the wedge therebetween, generally taper as they extend away from the hydraulic cylinder for the ease of insertion into the drill hole. Several splitting operations, each with a thrust of the wedge, are to be performed in succession, by inserting the splitter progressively deeper into the drill hole, for fracturing thick rock formations or the like.

Power-driven, wedge-operated rock splitter

A track-type vehicle undercarriage comprising a track frame, a carrier rail mounted on the track frame, a track rail fixedly secured to the track frame underneath thereof, a recoil device mounted on the track frame, a support member fixedly connected to the recoil device and biased forwardly thereby, a front rail rotatably mounted on the support member, a sprocket, and an endless track of linked together track shoes mounted on the carrier rail, front rail, track rail and sprocket.

Track-type vehicle undercarriage

A paving material extrusion molding apparatus for continuously laying or molding a paving material wherein the paving material supplied into hoppers is conveyed into a molding element by a plurality of screw conveyors, the paving material is compacted or consolidated by screw thrusts equal to the frictional force produced by the dead weight of the extrusion molding apparatus, a reaction force created by the compaction or consolidation is utilized to float off the entire extrusion molding apparatus, and a reaction force created by the conveyance of the paving material being continuously fed serves to move the extrusion molding apparatus along the predetermined path.

Paving material extrusion molding apparatus

The paving material supplied into a hopper is conveyed by screw conveyors into a mold provided in the lower part of the apparatus thereby molding and laying the material. The paving material is densely compacted or consolidated in the mold, and when the paving material is conveyed under pressure further, the mold can be pushed up, and the reaction force of the conveying pressure acts to move the entire apparatus horizontally. Thus, structure having the same sectional shape as that of the mold can be formed and laid continuously on the ground.

A method of forming a plurality of horizontal barriers in situ at a preselected depth beneath the soil surface and in a plane substantially parallel to the soil surface so as to be coextensive with a desired area, the barriers being made of a thermoplastic material such as asphalt for example, and forming further barriers joined to the horizontal barriers and extending vertically or obliquely toward the soil surface in order to surround the above-mentioned area, thereby improving soil having a poor water retention property. The method further comprises the steps of filling up chambers in a plow moving in the soil with the barrier forming material in the liquid form, leaking the material out of the chambers through passages of a given gap, and spreading the formed film laterally uniform by an ironing portion connected with the plow near the passages so as to render the formed water barrier uniform in thickness and free from apertures.

Method of forming a subterranean water barrier and a plow for use

Growing community of inventors

Yokohama, Japan

Koji Ogaki