Hitachi Construction Machinery Co., Ltd.

Taisei Corporation

Ohbayashi Corporation

Daiho Construction Co., Ltd.

Ishikawajima-harima Kukogyo K.k.

Takashi Moro

Naoki Miyanagi

Masamichi Tanaka

Yoshiaki Shimomura

Kiyoshi Tsuchiya

Kazuhide Seki

Ryuzaburo Otsuka

Hidetsugu Yamazaki

Seiji Tadano

Takanao Hasebe

Toshihumi Yuzawa

In a self-propelled recycling machine for receiving recyclable materials and processing the recyclable materials to produce recycled products, the self-propelled recycling machine comprises traveling unitsdisposed side by side in a spaced relation, a base framedisposed between the traveling unitsso as to form a space for accommodating a power unitbetween the traveling units, the power unitdisposed in the space within the base frame, and a mixing apparatusdisposed on the base frame. With such a construction, flexibility in layout of various component units can be increased.

Self-propelled recycling machine, and base unit and base frame of self-propelled recycling machine

An optical deflection angle measuring apparatus which, upon optically measuring a deflection angle, does not require an operation for directing a light onto a position detecting element and makes it possible to obtain measurement results without being affected by external force such as vibrations. A detector is constructed with a common lens for converging diffuse lights from light sources . Position detecting elements - - receive the thus-converged lights from the light sources and detect received positions of the converged lights. Reflecting prisms - - allow the diffuse lights from the light sources to be transmitted and guided so that the diffuse lights from the light sources , are converged, by the lens , onto the position detecting elements - - . The respective position detecting elements are arranged so as not to interfere with the convergence of the lights by the lens . The deflection angle &PHgr; can then be measured by computation.

Position measuring apparatus and optical deflection angle measuring apparatus for underground excavators

In a control system for synchronous rotation of the cutter heads in a multi-cutter shield machine, the rotation cutter heads are so disposed in generally the same plane such that the distance between the centers of the adjoining cutter heads is larger than the radius, and smaller than the diameter, of the cutter heads. The rotating cutter heads are driven independently of each other by electric drive systems, respectively. Each of the electric drive systems consists of plural motors with a reduction gear, coupled to the respective rotating cutter heads by means of a pinion and gear. The motor rotation is so controlled and the cutter heads are so synchronously rotated, that the angle of deviation between the cutter heads is within such an allowable range that the cutter heads will not interfere with each other even if there is any imbalance in excavating and rotating resistances between the cutter heads.

Control system for synchronous rotation of cutter heads, for use in

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Ushiku, Japan

Takashi Moro