公开(公告)号：US5446979A

公开(公告)日：1995-09-05

申请号：US142366

申请日：1993-11-22

申请人： Genroku Sugiyama ,  Toichi Hirata

发明人： Genroku Sugiyama ,  Toichi Hirata

IPC分类号： E02F9/22 ,  F15B11/16 ,  F15B11/17 ,  F15B13/04 ,  G05D1/02

CPC分类号： F15B13/0403 ,  E02F9/2232 ,  E02F9/2239 ,  E02F9/2282 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/161 ,  F15B11/17 ,  F15B13/0418 ,  F15B2211/20553 ,  F15B2211/20576 ,  F15B2211/30555 ,  F15B2211/3116 ,  F15B2211/3127 ,  F15B2211/329 ,  F15B2211/351 ,  F15B2211/365 ,  F15B2211/40515 ,  F15B2211/428 ,  F15B2211/45 ,  F15B2211/6054 ,  F15B2211/6057 ,  F15B2211/6355 ,  F15B2211/7058 ,  F15B2211/7142 ,  F15B2211/78

摘要： The hydraulic circuit system for civil engineering and construction machines includes a first pressure adjusting device (130) arranged between first variable restrictors (107, 107a) of a left traveling directional control valve (47) and a first traveling motor (57) for controlling the pressure downstream of the first variable restrictors to a value corresponding to a first signal pressure and a second pressure adjusting device (133) arranged between second variable restrictors (108, 108a) of a right traveling directional control valve (49) and a second traveling motor (58) for controlling the pressure downstream of the second variable restrictors to a value corresponding to a second signal pressure. A shuttle valve (136) detects a higher one of load pressures of the first and second traveling motors as a maximum load pressure. When performing the combined operation in which the first and second traveling motors are driven with at least one of a plurality of working actuators (53-56) simultaneously, signal selection valves (131, 135, 170) are actuated so as to supply the maximum load pressure to the first and second pressure adjusting devices as the first and second signal pressures. Consequently, in a combined operation of traveling and performing other works, a communication circuit (110) is activated along with the operation of a working actuator whereby even if a hydraulic fluid supply circuit (104) of the second traveling directional control valve communicates with a hydraulic fluid supply circuit (103) of a first traveling directional control valve, the differential pressures across the first and second variable restrictors become almost the same, thereby achieving a stable straight traveling.

公开(公告)号：US5152143A

公开(公告)日：1992-10-06

申请号：US449848

申请日：1989-12-21

申请人： Yusuke Kajita ,  Toichi Hirata ,  Genroku Sugiyama

发明人： Yusuke Kajita ,  Toichi Hirata ,  Genroku Sugiyama

IPC分类号： E02F9/22 ,  F15B11/00 ,  F15B11/05

CPC分类号： E02F9/2246 ,  E02F9/2228 ,  E02F9/2235 ,  E02F9/2292 ,  E02F9/2296

摘要： A hydraulic drive system comprising a prime mover (21), a hydraulic pump (22) driven by the prime mover, a plurality of hydraulic actuators (23-28) driven by hydraulic fluid supplied from the hydraulic pump, a plurality of flow control valves (29-34) for controlling flow of the hydraulic fluid supplied to the actuators, and a plurality of pressure compensating valve (35-40) for controlling respective differential pressures across the respective flow control valves, in which each of the pressure compensating valves applies a control force (f-F.sub.c) in a valve opening direction for setting a target value of the differential pressure across the flow control valve. There are provided a first detector (60) for detecting the target rotational speed (N.sub.0) of the prime mover (21), and controllers (61, 62, 63) for controlling the control force on the basis of the target rotational speed detected by at least the first detector such that the control force (f-F.sub.c) decreases in accordance with a decrease in the target rotational speed.

摘要翻译： PCT No.PCT / JP89 / 00893 Sec。 371日期1989年12月21日第 102（e）1989年12月21日PCT PCT 1989年8月31日PCT公布。 出版物WO90 / 02268 日本1990年8月3日。一种液压驱动系统，包括原动机（21），由原动机驱动的液压泵（22），多个液压致动器（23-28），由液压泵 ，用于控制供应到致动器的液压流体的流动的多个流量控制阀（29-34）和用于控制横跨各个流量控制阀的相应差压的多个压力补偿阀（35-40），其中 每个压力补偿阀在阀打开方向上施加控制力（f-Fc），以设定跨过流量控制阀的差压的目标值。 提供了用于检测原动机（21）的目标转速（N0）的第一检测器（60）和用于根据由原动机（21）检测到的目标转速控制控制力的控制器（61,62,63） 至少第一检测器，使得控制力（f-Fc）根据目标转速​​的降低而减小。

公开(公告)号：US5152140A

公开(公告)日：1992-10-06

申请号：US640440

申请日：1991-02-06

申请人： Toichi Hirata ,  Hideaki Tanaka ,  Genroku Sugiyama ,  Yusuke Kajita ,  Kazunori Nakamura

发明人： Toichi Hirata ,  Hideaki Tanaka ,  Genroku Sugiyama ,  Yusuke Kajita ,  Kazunori Nakamura

IPC分类号： E02F9/22 ,  F15B13/04

CPC分类号： F15B13/0417 ,  E02F9/2232 ,  E02F9/2296 ,  Y10T137/7858

摘要： A hydraulic drive system has a hydraulic pump (1), an actuator (2), a flow control valve (5) disposed between the hydraulic pump and the actuator, a pressure compensating valve (8; 8A; 8B) having a valve spool (23; 23A; 23B) that controls the differential pressure (Pz-PLS) across the flow control valve, and a pump delivery rate control device (9) for controlling a flow rate of the hydraulic fluid delivered from the hydraulic pump dependent on a differential pressure (Pd-PLS) between a pump pressure and a load pressure of the actuator. The pressure compensating valve has a first control chamber (30; 30A) subjected to the load pressure (PLS) of the actuator such that the load pressure acts on a first pressure receiving section (28; 28A) of the valve spool to urge the valve spool in the valve-opening direction, a second control chamber (29; 29A) subjected to the inlet pressure (Pz) of the flow control valve such that the inlet pressure acts on a second pressure receiving section (27; 27A) of the valve spool to urge the valve spool in the valve-closing direction, and a target differential pressure setting arrangement (31, 50, 51; 31B, 51) for urging the valve spool in the valve-opening direction. A damping capability to the actuator (2) is provided by setting pressure receiving area (Az) of the second pressure receiving section (27; 27A) to be greater than a pressure receiving area (ALS) of the first pressure receiving section (28; 28A).

摘要翻译： PCT No.PCT / JP90 / 01310 Sec。 371日期1991年2月6日 102（e）日期1991年2月6日PCT 1990年10月11日PCT PCT。 出版物WO91 / 05958 日期：1991年5月2日。液压驱动系统具有液压泵（1），致动器（2），设置在液压泵和致动器之间的流量控制阀（5），压力补偿阀（8; 8A; 8B ）具有控制跨过流量控制阀的差压（Pz-PLS）的阀芯（23; 23A; 23B）和用于控制从所述流量控制阀输送的液压流体的流量的泵输送速率控制装置（9） 液压泵取决于泵压力和执行器的负载压力之间的压差（Pd-PLS）。 压力补偿阀具有受到致动器的负载压力（PLS）的第一控制室（30; 30A），使得负载压力作用在阀芯的第一压力接收部分（28; 28A）上，以推动阀 阀门处于阀打开方向，第二控制室（29; 29A）经受流量控制阀的入口压力（Pz），使得入口压力作用在阀的第二压力接收部分（27; 27A）上 阀芯沿阀关闭方向推压阀芯，以及用于沿阀打开方向推压阀芯的目标压差设定装置（31,50,51; 31B，51）。 通过将第二受压部分（27; 27A）的压力接收面积（Az）设定为大于第一压力接收部分（28; 27）的受压面积（ALS）来提供致动器（2）的阻尼能力。 28A）。

公开(公告)号：US5140815A

公开(公告)日：1992-08-25

申请号：US427126

申请日：1989-10-23

申请人： Genroku Sugiyama ,  Toichi Hirata ,  Hideaki Tanaka ,  Kazumasa Yuasa ,  Yusaku Nozawa

发明人： Genroku Sugiyama ,  Toichi Hirata ,  Hideaki Tanaka ,  Kazumasa Yuasa ,  Yusaku Nozawa

IPC分类号： F15B13/04 ,  F16K15/18

CPC分类号： F15B13/0405 ,  F16K15/18

摘要： A hydraulic actuator is driven by hydraulic fluid discharged from a hydraulic pump, for controlling driving of the actuator. A valve has a meter-in circuit for introducing the hydraulic fluid discharged from the hydraulic pump into the actuator. The valve also has a meter-out circuit for returning fluid from the actuator, into a tank. The meter-out circuit is provided with a main valve for controlling the return fluid from the actuator, and a pilot circuit including a variable restrictor. When the main valve is closed, the pilot circuit is closed, and when the main valve is open, its degree of opening varies depending upon an amount of restriction of the variable restrictor. A controller varies the amount of restriction of the variable restrictor valve in accordance with the driving pressure of the actuator.

摘要翻译： PCT No.PCT / JP89 / 00184 Sec。 371日期：1989年10月23日 102（e）日期1989年10月23日PCT提交1989年2月23日PCT公布。 第WO89 / 08213号公报。 日期1989年9月8日。液压致动器由从液压泵排出的液压流体驱动，用于控制致动器的驱动。 阀具有用于将从液压泵排出的液压流体引入致动器的计量回路。 阀还具有用于将流体从致动器返回到罐中的出口回路。 出口电路设置有用于控制来自致动器的返回流体的主阀和包括可变节流器的先导电路。 当主阀关闭时，先导电路关闭，当主阀打开时，其开度根据可变节流器的限制量而变化。 控制器根据致动器的驱动压力改变可变节流阀的限制量。

公开(公告)号：US5083430A

公开(公告)日：1992-01-28

申请号：US439389

申请日：1989-11-13

申请人： Toichi Hirata ,  Hideaki Tanaka ,  Genroku Sugiyama ,  Yusaku Nozawa

发明人： Toichi Hirata ,  Hideaki Tanaka ,  Genroku Sugiyama ,  Yusaku Nozawa

IPC分类号： E02F9/22 ,  F15B11/16 ,  F15B13/04

CPC分类号： F15B11/165 ,  E02F9/2225 ,  E02F9/2232 ,  E02F9/2296 ,  F15B11/163 ,  F15B13/0417 ,  F15B2211/20553 ,  F15B2211/253 ,  F15B2211/30505 ,  F15B2211/30535 ,  F15B2211/3055 ,  F15B2211/3111 ,  F15B2211/324 ,  F15B2211/351 ,  F15B2211/353 ,  F15B2211/6051 ,  F15B2211/6054 ,  F15B2211/7053 ,  F15B2211/7135 ,  Y10T137/87193

摘要： A hydraulic driving apparatus has at least one hydraulic pump, a plurality of hydraulic actuators driven by hydraulic fluid discharged from the hydraulic pump, a tank to which return fluid from the plurality of hydraulic actuators is discharged, and a flow control valve associated with each of the plurality of hydraulic actuators. The flow control valve has a first main variable restrictor for controlling flow rate of the hydraulic fluid supplied from the hydraulic pump to the hydraulic actuator, and a second main variable restrictor for controlling flow rate of the return fluid discharged from the hydraulic actuator to the tank. A pump control operative in response to the difference between the discharge pressure of the hydraulic pump and the maximum load pressure of the hydraulic actuators normally controls the discharge rate of the hydraulic pump so that the pump discharge pressure is raised more than the maximum load pressure by a predetermined value. A first pressure-compensating control operates with a valve determined by the difference between the pump discharge pressure and the maximum load pressure, the value acting as a compensating differential-pressure target value, and pressure-compensation-controls the first main variable restrictor of the flow control valve. A second pressure-compensating control is operative with a value determined by the pressure difference across the first main variable restrictor, the valve acting as a compensating differential-pressure target value, for controlling the second main variable restrictor of the flow control valve.

公开(公告)号：US5056312A

公开(公告)日：1991-10-15

申请号：US449845

申请日：1989-11-22

申请人： Toichi Hirata ,  Genroku Sugiyama ,  Yusuke Kajita ,  Yukio Aoyagi ,  Tomohiko Yasudi ,  Gen Yasuda ,  Hiroshi Watanabe ,  Eiki Izumi ,  Yasuo Tanaka ,  Hiroshi Onoue ,  Shigetaka Nakamura

发明人： Toichi Hirata ,  Genroku Sugiyama ,  Yusuke Kajita ,  Yukio Aoyagi ,  Tomohiko Yasudi ,  Gen Yasuda ,  Hiroshi Watanabe ,  Eiki Izumi ,  Yasuo Tanaka ,  Hiroshi Onoue ,  Shigetaka Nakamura

IPC分类号： E02F9/22 ,  F15B11/16 ,  F15B21/08

CPC分类号： F15B21/087 ,  E02F9/2228 ,  E02F9/2235 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/163 ,  F04B2205/05 ,  F04B2207/01 ,  F15B2211/20553 ,  F15B2211/25 ,  F15B2211/30535 ,  F15B2211/3111 ,  F15B2211/40515 ,  F15B2211/40569 ,  F15B2211/428 ,  F15B2211/455 ,  F15B2211/6052 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6355 ,  F15B2211/65 ,  F15B2211/6653 ,  F15B2211/6654 ,  F15B2211/71 ,  F15B2211/78

摘要： A hydraulic system for a construction machine comprising plural hydraulic actuators (23-28) driven by fluid supplied from a pump (22), first and second flow control valves (29-34) for controlling flows of fluid supplied to the first and second actuators, and first and second distribution compensating valves (35-40) for controlling first differential pressure (.DELTA.P v1-.DELTA.P v6) produced between inlets and outlets of the first and second flow control valves. The first and second distribution compensating valves have respective drives (45-50, 35c-40c) for applying control forces (Fc1-Fc2) in accordance with the second differential pressure to the associated distribution compensating valves, to thereby set target values of the first differential pressures. The hydraulic system includes first means (59) for detecting the second differential pressure (.DELTA.P LS) from the discharge pressure (P s) of the pump (22) and the maximum load pressure (P amax) out of the first and second actuators; second means (61) for calculating individual values (Fc1-Fc6), as values of the control forces applied from the drives (45-50, 35C-40C) of the first and second distribution compensating valves (35-40), in accordance with at least the second differential pressure detected by the first means; and first and second control pressure generators (62a-62f) provided in association with the first and second distribution compensating valves. The first and second control pressure generators (62a-62f) produce control pressures (P c1-P c6) dependent on the individual values obtained by the second means and output the control pressures to the drives (35c-40c) of the first and second distribution compensating valves.

公开(公告)号：US4832082A

公开(公告)日：1989-05-23

申请号：US196011

申请日：1988-04-22

申请人： Toichi Hirata ,  Hideaki Tanaka ,  Genroku Sugiyama ,  Shinichi Satoh

发明人： Toichi Hirata ,  Hideaki Tanaka ,  Genroku Sugiyama ,  Shinichi Satoh

IPC分类号： F15B11/00 ,  F15B13/04 ,  F15B13/042 ,  F15B21/04

CPC分类号： F15B13/0402 ,  F15B13/0422 ,  F15B21/044 ,  Y10T137/8663

摘要： A hydraulic pilot operated directional control valve (30; 60; 70) in which at least one pilot hydraulic pressure chamber (40, 41; 76) is formed within a block (39; 64; 75) of a hydraulic pilot operating section (32, 33; 61; 72), and pilot hydraulic fluid is led into the pilot hydraulic pressure chamber to drive a spool (37, 38; 74). A drain passageway (54; 82) is provided in the vicinity of the pilot hydraulic pressure chamber (40, 41; 76) within the block (39; 64; 75), and the pilot hydraulic pressure chamber and the drain passageway communicate with each other through minute passageway means (52, 53; 83) for bleeding air.

公开(公告)号：US07228125B2

公开(公告)日：2007-06-05

申请号：US10475615

申请日：2002-04-22

申请人： Hiroyuki Adachi ,  Toichi Hirata ,  Genroku Sugiyama ,  Hiroshi Onoue ,  Hideo Karasawa ,  Koichi Shibata ,  Hiroshi Watanabe ,  Kiyoshi Ono ,  Osamu Tomikawa

发明人： Hiroyuki Adachi ,  Toichi Hirata ,  Genroku Sugiyama ,  Hiroshi Onoue ,  Hideo Karasawa ,  Koichi Shibata ,  Hiroshi Watanabe ,  Kiyoshi Ono ,  Osamu Tomikawa

IPC分类号： H04M3/42

CPC分类号： G07C5/008 ,  E02F9/26 ,  G06Q10/06 ,  G07C5/085

摘要： Assessment information needed to calculate a used vehicle assessment value of a hydraulic excavator 10 is input to a portable telephone 20 and is then transmitted from the portable telephone 20. The transmitted assessment information is received at a manufacturer's base station 40 at a remote location. The used vehicle assessment value of the hydraulic excavator 10 is calculated based upon the received assessment information, and history information and operation information on the hydraulic excavator 10 read out from an operation information database 43 and a history database 42 in correspondence to an ID number assigned to the hydraulic excavator which is included in the assessment information.

公开(公告)号：US07002465B2

公开(公告)日：2006-02-21

申请号：US10381336

申请日：2002-04-17

申请人： Hideki Komatsu ,  Hiroyuki Adachi ,  Kazuhiro Shibamori ,  Koichi Shibata ,  Itsuo Kondo ,  Toshinori Kimura ,  Genroku Sugiyama ,  Toichi Hirata ,  Tadatoshi Shimamura ,  Yuji Nagashima ,  Hiroshi Watanabe

发明人： Hideki Komatsu ,  Hiroyuki Adachi ,  Kazuhiro Shibamori ,  Koichi Shibata ,  Itsuo Kondo ,  Toshinori Kimura ,  Genroku Sugiyama ,  Toichi Hirata ,  Tadatoshi Shimamura ,  Yuji Nagashima ,  Hiroshi Watanabe

IPC分类号： G08B1/00

CPC分类号： E02F9/205 ,  B60R25/04 ,  B60R25/102 ,  B60R25/104 ,  B60R25/24 ,  B60R25/33 ,  B60R2325/205 ,  E02F9/2054 ,  E02F9/24

摘要： A security system of a construction machine of the present invention has a construction machine, a base station and a communication device. The construction machine comprises a data sending and receiving portion for sending first information, a storage portion for storing received information, and a control portion for controlling an operation of the construction machine. The base station receives the first information from the data sending and receiving portion of the construction machine and sends second information to the construction machine and manages the construction machine. It is configured so that the communication device is connected to the base station through a communication network and can send third information to the construction machine through the base station.

摘要翻译： 本发明的施工机械的安全系统具有施工机械，基站和通信装置。 施工机械包括用于发送第一信息的数据发送和接收部分，用于存储接收到的信息的存储部分和用于控制施工机械的操作的控制部分。 基站从施工机械的数据发送接收部接收第一信息，向施工机械发送第二信息，管理施工机械。 它被配置为使得通信设备通过通信网络连接到基站，并且可以通过基站向施工机器发送第三信息。

公开(公告)号：US06998957B2

公开(公告)日：2006-02-14

申请号：US10297176

申请日：2002-04-02

申请人： Koichi Shibata ,  Kiyoshi Ono ,  Genroku Sugiyama ,  Osamu Tomikawa ,  Hiroyuki Adachi ,  Hideo Karasawa ,  Toichi Hirata ,  Hiroshi Watanabe

发明人： Koichi Shibata ,  Kiyoshi Ono ,  Genroku Sugiyama ,  Osamu Tomikawa ,  Hiroyuki Adachi ,  Hideo Karasawa ,  Toichi Hirata ,  Hiroshi Watanabe

IPC分类号： B60R25/00 ,  G05B19/00 ,  H04Q1/00

CPC分类号： E02F9/205 ,  B60R25/04 ,  B60R25/2018 ,  B60R2325/205 ,  B60R2325/308 ,  E02F9/24

摘要： A security system for a construction machine including a construction machine equipped with a body controller for storing a first password, management apparatus arranged in a location apart from the construction machine and a portable communications unit for storing a second password provided communicably with the management apparatus and the body controller. The portable communications unit, receiving the first password from the management apparatus, replaces the second password with the first password. The body controller determines whether the second password output from the portable communications unit coincides with the first password. In case these passwords coincide with each other, an engine drive signal is output. Otherwise the engine is kept inoperable. This prevents possible theft of a construction machine.