Shin Caterpillar Mitsubishi Ltd.

Nippon Cable System Inc.

Masatoshi Miki

Toshio Kuwabara

Mitsuru Hikiyama

Manabu Tamura

Shoji Tozawa

Kazunori Yoshino

Kazuhiro Suzuki

Hiroyasu Nishikawa

Shigeo Kajita

Yoshinori Yamagishi

Makoto Samejima

Tomohiro Akaki

Katsusuke Awano

Morihiko Matsubara

Makoto Hirano

Regis Ega

Shigeyoshi Mitsumori

The present invention relates to remote radio control technology, and a remote radio control system includes a radio movable working machine ( ), a remote control apparatus ( A), and a movable repeater station ( ). First bidirectional communication means ( ) having a high radio wave directionality and first automatic tracking means ( A) are provided between the working machine ( ) and the repeater station ( ), and second bidirectional communication means ( ) having a high radio wave directionality, second automatic tracking means ( A, A), and emergency spread spectrum bidirectional communication means ( ) for enabling bidirectional communication between the remote control apparatus ( A) and the repeater station ( ) when communication by the second bidirectional communication means ( ) is impossible are provided between the remote control apparatus ( A) and the repeater station ( ). Consequently, even if communication between the working machine ( ) and the movable repeater station ( ) is disabled, each of the working machine ( ) and the repeater station ( ) is permitted to perform a minimum necessary operation, and any other person than those skilled in actual controlling operation of the working machine ( ) can perform remote control easily.

Remote radio operating system, and remote operating apparatus, mobile relay station and radio mobile working machine

A control apparatus and a control method for a construction machine make it possible to set an operation condition suitable for the working attachment by a simple operation with certainty, even if unique information of a working attachment cannot be inputted. To this end, a control apparatus for a construction machine to which a working attachment is attached is constructed that includes a control section for controlling a hydraulic power source based on unique information about the working attachment, a display section which performs discrimination failure display when the type of the working attachment has not successfully been discriminated, and a standard set valve setting section for setting, when the discrimination failure display is performed by the display section, the type of the working attachment and a standard value regarding the operation condition of the working attachment, and that the control section is capable of controlling the hydraulic power source based on the operation condition set based on the unique information of the working attachment of information of the standard set valve set by the standard set valve setting section.

Control apparatus and control method for a construction machine

A signal sending device 21 which stores therein proper data, such as an accelerator position and a pump output, concerning operating conditions, such as supply hydraulic pressure and flow rate, appropriate for a working attachment to be attached to the front part of a hydraulic excavator or the like is mounted on the working attachment. The body of a hydraulic excavator is provided with a controller 11 adapted to control the hydraulic sources by receiving and storing proper data sent from the signal sending device 21. The signal sending device 21 includes a ROM 31 for storing proper data for each working attachment, a CPU 32 for retrieving proper data from the ROM 31, and a data communication interface (COM) 33 for receiving command signals sent from the controller 11 of a machine body to the CPU 32 and sending to the controller 11 proper data which have been retrieved from ROM 31 by the CPU 32.

Method and device for controlling a construction machine

Control apparatus for construction machine

Each attachment for a hydraulically actuated device includes a digitally coded connector which informs a control device about its identity. The control device includes a library which relates the digitally coded identity with fluid parameters of pressure and flow rate required for operation of the hydraulically operated device. The control device outputs signals which control the accelerator of an engine, and also controls pump operations to establish the fluid parameters appropriate for the hydraulically actuated device. When a second device is actuated simultaneously with the original device, the control device automatically compensates with adjusted fluid parameters to permit optimum operation of both devices at the same time.

Control circuit for a construction machine

To allow data from the joy stick type operation levers to be output to the main control section side using a minimum number of output wires, a joy stick type operating lever is provided with a sub-control section which receives signals from the joy stick and other related sources, digitizes and arranges the signals according to a present order and outputs the signals to a main control circuit.

Joy stick type operating lever device

An actuator for an accelarator includes a casing and a driving part having a reversibly revolvable motor disposed in the casing, a decelerator for decelerating revolution of the motor, and an output pulley, connected to the decelerator, for taking up or letting out a control cable cable. The actuator also includes a control part composed of an operation part, and a control mechanism for controlling the revolution of the motor on the basis of a deviation between a position of the operation part and a position of the output part,

Actuator for an accelerator for engine control valve control and the like

Growing community of inventors

Tokyo, Japan

Masatoshi Miki