Taiheiyo Engineering Corporation

Mitsui Engineering and Shipbuilding Company Limited

Taiiheiyo Engineering Incorporated

Hajime Endo

Ken Takahashi

Shigeo Nakajima

Tsunetoshi Ito

Shigeo Nakagima

Toshio Shimada

Masao Hujimori

Nobuo Kiyama

Keijiro Yamaoka

Isao Sawayama

Tsunetoshi Itoh

A hot-water storage type power generating unit includes a first tank coupled to a power generating system having a generator, a hot water producting unit for heating medium-temperature water from the first tank with exhaust heat from external equipment to produce high-temperature water, and a second tank for storing the high-temperature water from the hot water producing unit. The high-temperature water is supplied from the second tank to the power generating system for generating electric power to meet peak load demands. The power generating system includes a rotary separator turbine rotatable by the high-temperature water from the second tank for separating steam from the high-temperature water, and a steam turbine rotatable by the steam from the rotary separator turbine, the generator being operatively coupled with the steam turbine for being rotated thereby.

Hot-water storage type power generating unit

A safety wall treating method employed in the coal mining operation at the long wall face of a coal mine comprises shearing the long wall face leaving safety wall(s) at one or both side(s) of the face but shearing through the safety wall(s) at regular intervals to form intake or exhaust openings communicating with intake or exhaust tunnels.

Apparatus on drum shearer for cutting through safety wall in long wall

Safety wall cutting through method employed in long wall mining

An operator carriage intended to be used at a long-walled pit face in a coal or metal mine and comprising endlessly running members arranged at both ends of a conveyor and driven by a motor, an operation table suspendedly attached to the side of a spill plate of the conveyor and supported by running supports such as guide rollers which are engaged with guide rails attached to the same side of the spill plate, and a carrying mechanism arranged at the operation table so as to hold the endlessly running members.

Operator carriage

A coal mining method at a long-walled pit face of a coal mine comprises combining self-advancing supports with a conveyor which is arranged along the long-walled pit face and on which a shearer is mounted, and arranging the effective shearing depth of shearing drums of the shearer to be at least half as long as the stroke of a shifter for shifting both of the self-advancing supports and the conveyor toward the pit face, whereby each of the self-advancing supports is progressively shifted toward the pit face every time that the whole area of the pit face is sheared at least twice by the shearer.

Coal mining method at a long-walled pit face of the coal mine

Apparatus employed at the long-walled pit face in the coal mine so as to shift the conveyor toward the pit face wherein the conveyor which is arranged in front of the pit face and on which the shearer travels, is divided into several individual portions, and responding to signals transmitted from a position sensor arranged in each portion of the conveyor, a position signal generator attached to the shearer and a stroke sensor attached to one of hydraulic cylinders belonging to each portion on the conveyor, a group of electromagnetic valves for rendering operative the hydraulic cylinders which belong to that portion of the conveyor to be shifted are controlled so as to shift automatically when required only the corresponding portion of the conveyor.

Apparatus for automatically shifting the conveyor at the pit face in the

Apparatus for drawing shearers comprises a conveyor on which the shearers move with sledges interposed therebetween and which is arranged along a long-walled pit face of a coal mine shearers drawing cable is arranged in fixing members which are arranged on the conveyor, and a pair of means are provided for releasing and fixing the cable from and into the fixing members, the means being arranged adjacent to the sledges and the cable located between the cable releasing and fixing means being engaged with a cable driving means housed in each of the shearer bodies, wherein a drawing force is applied only to the cable located between the cable releasing and fixing means when the driving means is rendered operative.

Apparatus for drawing the shearers

An apparatus for protecting coal mine workers from flying coal, rocks, coal dust, scattering coal and the like, which are produced as a drum shearer works in a longwall coal face. The apparatus is provided with isolated walls or chambers between iron props installed in the self-advancing supports provided in the longwall coal face by use of fastening members. The isolated wall or chamber is connected with its adjacent wall or chamber by a flexible connecting member.

Apparatus for protecting of coal mine workers

A coal mining machine intended to be used in a pit having a long-walled pit face and having a mechanism in which two cutting drums are attached to the main ranging arm of a ranging drum shearer through a sub-ranging arm and the position of said cutting drums is defined by the cooperation of said main- and sub-ranging arms.

Longwall coal mining machine with plural cutters on sub-ranging arm

A self-advancing support for use in the pit of coal or metal mine designed to support the pit roof after the mining operation by a shearer and having a mechanism for enabling the self-advancing support to be moved without using such means as a truck and a lift, said mechanism being housed within the self-advancing support and/or detached therefrom.

Growing community of inventors

Kushiro, Japan

Hajime Endo