公开(公告)号：US4555064A

公开(公告)日：1985-11-26

申请号：US573888

申请日：1984-01-25

申请人： Juichi Asano ,  Yasuo Okubo ,  Hiroshi Saito ,  Shigeru Harada

发明人： Juichi Asano ,  Yasuo Okubo ,  Hiroshi Saito ,  Shigeru Harada

IPC分类号： E21D9/08 ,  B02C7/06 ,  B02C7/12 ,  E21B7/00 ,  E21B7/20 ,  E21B10/42 ,  E21B21/12 ,  E21D9/11 ,  E21D9/12 ,  B02C18/16

CPC分类号： B02C7/06 ,  B02C7/12 ,  E21B10/42 ,  E21B21/12 ,  E21B7/00 ,  E21B7/208 ,  E21D9/112

摘要： A pebble-stone crushing device for use in an excavator for laying pipelines underground has a plurality of rotor teeth formed integrally with the rear face of a cutter head which is mounted in the most front part of an excavator body to excavate a working face in front thereof, and a plurality of stator teeth formed radially on and integrally with an annular front face plate of said excavator body so as to cooperate with said rotor teeth. The stator teeth comprises plural groups of radially spaced apart tooth members having different length. Further, the tooth members comprises groups of comparatively long main tooth members and groups of comparatively short auxiliary tooth members each being disposed, respectively, between every adjacent two main tooth members.

摘要翻译： 用于挖掘机在地下铺设管道的挖泥机中使用的卵石破碎装置具有多个转子齿，其与安装在挖掘机主体的最前部的刀头的后表面一体形成，以在前面挖掘工作面 以及多个定子齿，其与所述挖掘机主体的环形前面板径向形成一体，以与所述转子齿配合。 定子齿包括具有不同长度的多组径向间隔开的齿构件。 此外，齿构件包括相对较长的主齿构件组和相对较短的副齿构件的组，各组分别设置在每个相邻的两个主齿构件之间。

公开(公告)号：US4797574A

公开(公告)日：1989-01-10

申请号：US133622

申请日：1987-12-16

申请人： Yasuo Okubo ,  Masataka Hirasawa

发明人： Yasuo Okubo ,  Masataka Hirasawa

IPC分类号： H04L7/00 ,  H03K5/135 ,  H03K5/13 ,  G05F5/00 ,  H03K7/00 ,  H03K9/06

CPC分类号： H03K5/135

摘要： A pulse signal transfer control circuit is located between an input pulse detecting circuit for detecting the arrival of an externally applied input pulse and outputting a pulse signal with a predetermined pulse width, and an R-S flip-flop. The transfer control circuit prohibits the pulse signal from being transferred to the R-S flip-flop during a period in which the R-S flip-flop is set, a period of generation of a first internal clock signal, and a period of generation of a second internal clock signal, and allows the pulse signal to be transferred to the first R-S flip-flop during period in which the first and second clock signals are not generated and the period in which the first R-S flip-flop is reset.

公开(公告)号：US5707176A

公开(公告)日：1998-01-13

申请号：US582999

申请日：1995-12-01

申请人： Yasuo Okubo

发明人： Yasuo Okubo

IPC分类号： E21B7/00 ,  E21B7/20 ,  E21B44/00 ,  E21D9/10 ,  E21D9/12 ,  E21D9/00

CPC分类号： E21B44/00 ,  E21B7/005 ,  E21B7/201 ,  E21D9/108 ,  E21D9/124

摘要： An earth discharge control system for a small-diameter pipe propelling machine controls the excavated earth discharging operation of the small-diameter pipe propelling machine. The small-pipe propelling machine propels a small-diameter pipe (2) joined at its leading end to a leading pipe (1) into the ground by a propelling unit (3) installed in a starting shaft (4). Earth excavated by a cutting head (8) supported on the leading end of the leading pipe (1) is conveyed toward the starting shaft (4) by a screw conveyor (6) disposed within the small-diameter pipe (1). A pneumatically operated control valve (10) is disposed in combination with a portion of the screw conveyor (6) within the leading pipe (1). A pressure detector (23) detects the pressure in the pressure chamber (10a) of the control valve (10) and the amount of excavated earth contained in a portion of a casing (6b) extending ahead of the control valve (10) is estimated on the basis of the pressure in the pressure chamber (10a) of the control valve (10). The rotation of the screw shaft (6a) of the screw conveyor (6) is controlled on the basis of information thus acquired so that an optimum amount of excavated earth is taken always into the screw conveyor (6).

摘要翻译： PCT No.PCT / JP94 / 00740 Sec。 371 1995年12月1日第 102（e）日期1995年12月1日PCT 1994年5月6日PCT PCT。 公开号WO94 / 27028 日期1994年11月24日小直径推进机排土控制系统控制小直径推进机的挖土排放作业。 小型管道推进机通过安装在起动轴（4）中的推进单元（3）推进其前端连接到引导管（1）的小直径管道（2）进入地面。 通过支撑在引导管（1）的前端的切割头（8）挖掘的地面通过设置在小直径管（1）内的螺旋输送机（6）被输送到起动轴（4）。 气动操作的控制阀（10）与螺旋输送机（6）的一部分在前导管（1）内组合设置。 压力检测器（23）检测控制阀（10）的压力室（10a）中的压力，估计在控制阀（10）前方延伸的壳体（6b）的一部分中包含的挖掘的地面的量 基于控制阀（10）的压力室（10a）中的压力。 螺旋输送机（6）的螺杆轴（6a）的转动是根据这样获得的信息进行控制的，以便始终将螺旋输送机（6）中的挖掘土的最佳量进行采集。