Kabushiki Kaisha Komatsu Seisakusho

Komatsu Corporation

Yukio Moriya

Toshio Yokoyama

Takumi Onoda

Fujitoshi Takamura

Hiroshi Yoshida

Takeshi Kobayashi

Yuji Ozawa

Satoru Koyanagi

Kazuyuki Yamazaki

Tetsuya Fujimura

Toru Hishiyama

Masayuki Nagahama

Tohru Nakayama

Shigeru Kinoshita

Katsuhiro Ikegami

Tooru Nakayama

Hiroyuki Umeda

Hisashi Fukumoto

Kaoru Nishihara

Kimio Nishida

Tadashi Yoda

Hideyuki Takehara

Akihisa Takahashi

Hideo Kawai

Toor Nakayama

In an impact crusher, a rise of an advancing-retracting portion () of a gap adjuster () caused when a rebound plate () touches a rotor () or the rotation amount of the rotor () is detected to determine a zero-point position of the rebound plate () is determined based on the detected result, so that the zero-point position can be securely determined since it is not necessary to touch and vibrate the rebound plate with the rotor rotating at a high speed, and since the rebound plate () is not vibrated, the zero-point position can be securely determined without being influenced by the abrasion of the rebound plate () and the impact plate (), thereby accurately adjusting gap (C).

Control method of a gap adjuster of impact crusher and a gap adjuster

A mobile crushing machine, equipped with an impact crusher having a separable casingcomprising a stationary casingand a movable casing, is adopted for casingwith the upper endof the stationary casingpositioned below the upper endof the movable casingand with the movable casingarranged to permit an operator to collapse the feeding portA side of movable casinginto the rotation mechanismfor transporting the mobile crushing machine The impact crusher is equipped with a gap adjustment device ().

Crusher and mobile crushing machine equipped with the crusher

The invention provides a mobile crushing apparatus which is compact and light, has an improved assembling property and maintaining property, and has an improved operability for changing to a traveling attitude. Accordingly, in the apparatus provided with a crusher ( ) crushing rocks or the like and a supply conveyor ( ) for supplying a material to be crushed, which are mounted on a frame ( ), the supply conveyor is provided in one side in a width direction of the frame, and an input shaft ( ) for inputting a driving power to the crusher is provided in another side in the width direction of the frame. A power source ( ) for the crusher and the supply conveyor is arranged in a stand ( ) so as to constitute a power unit ( ) and mounted to the frame via the stand.

Mobile crushing apparatus

When a longitudinal straight traveling mode position A, an oblique traveling mode position B, a transverse traveling mode position C, or spin turning mode position D is selected by a traveling mode changeover switch 21, a signal corresponding to the selection is input to a controller 27. The controller outputs signals to turning actuators 15a and 15b for orienting driving wheels 11a and 11b toward the selected position. With this signal, the turning actuators 15a and 15b cause turning of the driving wheels 11a and 11b. At the same time, turning angle detection sensors 16a and 16b input signal indicative of turning angle of the driving wheels. When the turning angle becomes coincident with a preliminarily set angle, a signal for terminating turning is output to the turning actuators 15a and 15b. By this control, turning action of the turning actuators 15a and 15b is terminated with setting the driving wheels 11a and 11b at the position of the selected orientation.

Operation control system for traveling vehicle

Apparatus for controlling straight excavating operation with hydraulic

Hydraulically-operated equipment such as travelling equipment or working equipment for use in construction machinery such as a power shovel, shoveldozer and bulldozer. The hydraulically-operated equipment comprises a hydraulic driving mechanism actuated by hydraulic pressure, a hydraulic pressure supplying device for supplying hydraulic pressure to a hydraulic pipeline system for the hydraulic driving mechanism and a controller for controlling the hydraulic pressure supplying device such that the supplying rate at which hydraulic pressure is supplied to the hydraulic pipeline system according to the supply of hydraulic pressure is decreased in a specified period after a dead zone period in which hydraulic pressure starts to rise. This arrangement prevents an operational lag in the hydraulic driving mechanism as well as a shock at the time of start-up and shut-down.

Hydraulically-operated equipment for construction machinery

Method and device for automating operation of construction machine

Teaching and playback method for work machine

Apparatus for controlling hydraulic pumps for construction machine

Confluence valve circuit of a hydraulic excavator

Operation control device

A method of controlling an output of an internal combustion engine having an electronic governor device and/or that of at least one variable displacement hydraulic pump driven by the engine in which, when the engine is operated in a range of high speed revolutions approximately equal to or exceeding the number of revolutions of the engine at a rated point on a governor control curve specific to the engine, the engine is operated by the action of the electonic governor device at a given point of a curve of equal horsepower of the engine where an engine output torque is higher than that in the high speed revolution range and where fuel consumption is lower than that in the range.

Method of controlling an output of an internal combustion engine and/or

There is disclosed a hydraulic circuit system for use in a swivel type excavator. The circuit system having a plurality of variable displacement pumps for supplying pressurized fluid for manipulations of work implements and swivel means of the excavator, and control means operative to automatically adjust pump displacement to the output hosepower of a prime mover driving the pumps. The control means includes hydraulic pressure detector means, servo-control means respectively provided in the pumps, negative control valves for respectively controlling the servo-control means by the action of the pressure detector means, cut off valves respectively connected in series with the negative control valves, and summing valves respectively connected in series with some of the cut off valves so as to control pressurized fluid to be supplied into the servo-control means by the action of the fluid pressure delivered from the pumps.

Hydraulic circuit system for use in swivel type excavators

Growing community of inventors

Hirakata, Japan

Yukio Moriya