Komatsu Corporation

Tooru Hishiyama

Kazuyuki Yamazaki

Kentaro Watanabe

Takuya Uemura

Eiichi Muramoto

Toyohiko Youan

Toshio Kitani

Shimpei Abe

A crushing control apparatus for a shearing crusher, which properly controls the crusher in accordance with kinds of objects to be crushed and is capable of reliably preventing stop of operation due to excessive load, clogging and the like, is provided. For this purpose, the crushing control apparatus includes a mode selecting switch () for selecting a mode according to each kind of the objects to be crushed, a ROM () for storing a control condition of the rotary shafts (), which conforms to the mode for each of the mode, and a controller (), which reads out the control condition corresponding to a selected mode from the ROM, when the predetermined mode is selected by the mode selecting switch, and controls the rotary shafts to be in the control condition which is read out.

Crushing control apparatus for shearing crusher

A ground drilling machine includes a machine body a rod propelling device, a rod exchanging device and a support unit provided for the machine body for supporting the rod exchanging device. The rod propelling device has a frame movably mounted to the machine body. The frame is slidable on a support portion provided for the machine body. The rod exchanging device is attached to the frame of the rod propelling device via a transverse mounting member. The rod exchanging device is also supported on the support unit so as to be slidable on the support unit along with the movement of the rod propelling device without changing of its relative position to the rod propelling device. The rod exchanging device can be made light and compact because the rod exchanging device is supported by the support unit which is provided for the machine body and accordingly a large bending load is not applied to the main body portion of the rod exchanging device.

Ground drilling machine and rod exchanger utilized therefor

Growing community of inventors

Hirakata, Japan

Tooru Hishiyama