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41. 发明授权

US06619037B1 Hydraulic driving device of civil engineering and construction machinery 有权
标题翻译：土木工程机械液压驱动装置
公开(公告)号：US06619037B1
公开(公告)日：2003-09-16
申请号：US09889612
申请日：2001-07-19
申请人： Tsukasa Toyooka , Toichi Hirata , Genroku Sugiyama , Kouji Ishikawa , Masao Nishimura , Tsuyoshi Nakamura
发明人： Tsukasa Toyooka , Toichi Hirata , Genroku Sugiyama , Kouji Ishikawa , Masao Nishimura , Tsuyoshi Nakamura
IPC分类号： F16D3102
CPC分类号： E02F9/2267 , E02F9/2239 , E02F9/2242 , E02F9/2271 , E02F9/2292
摘要： Provided are hydraulic pumps 1,2, a control valve group 15a connected to the pump 1 and including a bypass on/off valve 7, a control valve group 15b connected to the pump 2 and including a reserve-actuator-controlling, directional control valve 11, a communication line 13 communicating a most upstream side of the control valve group 15a with a supply line 11a to the reserve-actuator-controlling, directional control valve 11, a merge control valve 14 for communicating or cutting off the communication line 13, an interlocked control means for changing over the merge control valve 14 to an open position and the bypass on/off valve 7 to a closed position in association with a change-over operation of the reserve-actuator-controlling, directional control valve 11, and a selective control valve 28 capable of taking one of a state, in which the operation to change over the merge control valve 14 by the interlocked control means is feasible, and another state in which the operation to change over the merge control valve by the interlocked control means is infeasible. The control valve group 15a, the control valve group 15b, the communication line 13 and the merge control valve 14 are arranged in a housing 15 such that a change or the like in a maximum value of an operating speed of an actuator, said operating speed being controlled by the reserve directional control valve, can be achieved.
摘要翻译：设有液压泵1,2，与泵1连接并包括旁通开闭阀7的控制阀组15a，连接到泵2的控制阀组15b，并且包括备用执行器控制方向控制阀如图11所示，将控制阀组15a的最上游侧与供给管线11a连通的通信线路13配置到备用执行器控制用方向控制阀11，连通或切断通信线路13的合流控制阀14，联合控制装置，用于将合并控制阀14转换到打开位置，旁路开/关阀7与备用执行器控制方向控制阀11的转换操作相关联地转换到关闭位置，以及选择控制阀28，其能够采用其中一个状态，其中通过互锁控制装置切换合并控制阀14的操作是可行的;以及另一种状态，其中改变o的操作通过互锁控制装置检查合并控制阀是不可行的。控制阀组15a，控制阀组15b，连通管线13和合并控制阀14布置在壳体15中，使得在致动器的操作速度的最大值中的变化等，所述操作速度由备用方向控制阀控制，可以实现。

42. 发明授权

US06325450B2 Operator's cab in construction machine 有权
标题翻译：建筑机械操作室
公开(公告)号：US06325450B2
公开(公告)日：2001-12-04
申请号：US09778078
申请日：2001-02-07
申请人： Tsuyoshi Sakyo , Toichi Hirata , Kazuhisa Tamura , Jun Sonoda , Takashi Nakagawa
发明人： Tsuyoshi Sakyo , Toichi Hirata , Kazuhisa Tamura , Jun Sonoda , Takashi Nakagawa
IPC分类号： B60R2700
CPC分类号： B62D21/09 , B62D27/026 , B62D33/06
摘要： An operator's cab in a construction machine in which hollow pillar portions are formed each with an outer panel and an inner panel bonded to each other and the hollow pillar portions constitute an operator's cab frame, includes at least one reinforcement member constituted of thin plate that is bonded to the outer panel and/or the inner panel to divide an internal space of each of the hollow pillar portions.
摘要翻译：一种建筑机械中的驾驶室，其中形成中空柱部分，每个都具有彼此接合的外板和内板，中空柱部构成操作室框架，包括至少一个由薄板构成的加强件，结合到外板和/或内板以分隔每个中空柱部分的内部空间。

43. 发明授权

US06209949B1 Operator's cab in construction machine 有权
公开(公告)号：US06209949B1
公开(公告)日：2001-04-03
申请号：US09203666
申请日：1998-12-01
申请人： Tsuyoshi Sakyo , Toichi Hirata , Kazuhisa Tamura , Jun Sonoda , Takashi Nakagawa
发明人： Tsuyoshi Sakyo , Toichi Hirata , Kazuhisa Tamura , Jun Sonoda , Takashi Nakagawa
IPC分类号： B60R2700
CPC分类号： B62D21/09 , B62D27/026 , B62D33/06
摘要： An operator's cab in a construction machine in which hollow pillar portions are formed each with an outer panel and an inner panel bonded to each other and the hollow pillar portions constitute an operator's cab frame, includes at least one reinforcement member constituted of thin plate that is bonded to the outer panel and/or the inner panel to divide an internal space of each of the hollow pillar portions.

44. 发明授权

US06206457B1 Operator's cab for construction machines 有权
标题翻译：建筑机械操作室
公开(公告)号：US06206457B1
公开(公告)日：2001-03-27
申请号：US09355778
申请日：1999-08-03
申请人： Tsuyoshi Sakyo , Toichi Hirata , Kazuhisa Tamura , Jun Sonoda
发明人： Tsuyoshi Sakyo , Toichi Hirata , Kazuhisa Tamura , Jun Sonoda
IPC分类号： B60J700
CPC分类号： B62D33/06 , B62D21/09
摘要： An operator's cab in a construction machine, which has pillars standing at a left side surface and a right side surface, includes a frame reinforcement member that extends between the pillars and meets at a near right angle to the pillars so as to create a resistance against a bending load applied to the pillars.
摘要翻译：具有立柱在左侧表面和右侧表面上的支柱的建筑机械中的操作者驾驶室包括框架加强构件，该框架加强构件在支柱之间延伸并且以与支柱成直角的角度相交，以产生抵抗力施加到支柱的弯曲载荷。

45. 发明授权

US5940997A Hydraulic circuit system for hydraulic working machine 有权
标题翻译：液压工程机液压回路系统
公开(公告)号：US5940997A
公开(公告)日：1999-08-24
申请号：US145158
申请日：1998-09-01
申请人： Tsukasa Toyooka , Toichi Hirata , Genroku Sugiyama , Kazunori Nakamura , Kouji Ishikawa , Tsuyoshi Nakamura
发明人： Tsukasa Toyooka , Toichi Hirata , Genroku Sugiyama , Kazunori Nakamura , Kouji Ishikawa , Tsuyoshi Nakamura
IPC分类号： E02F9/22
CPC分类号： E02F9/2267 , E02F9/2221 , E02F9/2232 , E02F9/2242 , E02F9/2271 , E02F9/2282 , E02F9/2285 , E02F9/2292 , E02F9/2296
摘要： A hydraulic circuit system includes a shuttle block, and shuttle valves are arranged and connected within the shuttle block. The maximum pressure in a predetermined operation signal pressure group selected from operation signal pressures generated by pilot operating units is selected to produce a control signal pressure within the shuttle block. The control signal pressure is output to control devices such as a track communicating valve, a swing brake cylinder, and regulators for hydraulic pumps.
摘要翻译：一个液压回路系统包括一个梭子块，并且梭阀布置并连接在梭子块内。从由先导操作单元产生的操作信号压力中选择的预定操作信号压力组中的最大压力被选择以产生梭模块内的控制信号压力。控制信号压力输出到诸如轨道连通阀，回转制动缸和液压泵调节器之类的控制装置。

46. 发明授权

US5813311A Hydraulic control system for hydraulic working machine 失效
标题翻译：液压作业机液压控制系统
公开(公告)号：US5813311A
公开(公告)日：1998-09-29
申请号：US771158
申请日：1996-12-20
申请人： Tsukasa Toyooka , Toichi Hirata , Genroku Sugiyama , Shigehiro Yoshinaga , Kouji Ishikawa , Youichi Kowatari , Tsuyoshi Nakamura
发明人： Tsukasa Toyooka , Toichi Hirata , Genroku Sugiyama , Shigehiro Yoshinaga , Kouji Ishikawa , Youichi Kowatari , Tsuyoshi Nakamura
IPC分类号： E02F9/20 , E02F9/22 , F15B11/16
CPC分类号： E02F9/2285 , E02F9/2228 , E02F9/2282
摘要： A controller 520 has a data portion 520c in which the relationship between a pump delivery pressure and a target opening area of a variable throttle 300a of a control valve 300 is set such that the target opening area is large when the pump delivery pressure is low, and small when the pump delivery pressure is high. An input portion 520a takes in a detection signal from a pump pressure sensor 700, a processing portion 520b reads the data from the data portion 520c and calculates a signal output to a solenoid proportional valve 590, and an output portion 520d converts the calculated signal into a command signal for the solenoid proportional valve 590 and outputs the command signal. Upon receiving the command signal from the controller 520, the solenoid proportional valve 590 produces a command pilot pressure for the control valve 300 corresponding to the input signal and controls the opening area of the variable throttle 300a.
摘要翻译：控制器520具有数据部分520c，其中泵输送压力和控制阀300的可变节流阀300a的目标开口面积之间的关系被设定为当泵输送压力低时目标开口面积大，并且当泵输送压力高时小。输入部分520a从泵压力传感器700接收检测信号，处理部分520b从数据部分520c读取数据，并计算输出到电磁比例阀590的信号，输出部分520d将计算出的信号转换成用于电磁比例阀590的命令信号并输出命令信号。电磁比例阀590从控制器520接收到指令信号时，根据输入信号产生控制阀300的指令先导压力，并控制可变节流阀300a的开度面积。

47. 发明授权

US5446979A Hydraulic circuit system for civil engineering and construction machines 失效
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.

48. 发明授权

US5168705A Hydraulic drive system 失效
标题翻译：液压驱动系统
公开(公告)号：US5168705A
公开(公告)日：1992-12-08
申请号：US661600
申请日：1991-02-28
申请人： Toichi Hirata , Hideaki Tanaka , Kazunori Nakamura , Hideshi Koiwai , Yoneaki Takahashi
发明人： Toichi Hirata , Hideaki Tanaka , Kazunori Nakamura , Hideshi Koiwai , Yoneaki Takahashi
IPC分类号： E02F9/22 , F15B11/02
CPC分类号： E02F9/2232 , Y10T137/87185
摘要： A flow control valve has a first variable restrictor to control a flow rate of a hydraulic fluid supplied from a hydraulic fluid supply line to a hydraulic actuator and a second variable restrictor to control a flow rate of the hydraulic fluid discharged from the hydraulic actuator to a hydraulic fluid return line. A pressure compensating valve holds constant a differential pressure across the first variable restrictor, and a recovery circuit having a recovery line has a check valve that allows flow of the hydraulic fluid only toward the supply line. The recovery circuit receives at least part of the hydraulic fluid discharged from the hydraulic actuator and returns it to the supply line at a portion between the pressure compensating valve and the first variable restrictor through the recovery line upon controlling of the discharged flow rate by the second variable restrictor to thereby recover the discharged hydraulic fluid. A third variable restrictor disposed in the return line at a portion downstream of the second variable restrictor controls the recovery pressure of the hydraulic fluid returned to the supply line, and its restriction amount is changed dependent upon an input amount of the flow rate control valve.

49. 发明授权

US5152143A Hydraulic drive system 失效
标题翻译：液压驱动系统
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。

50. 发明授权

US5152140A Pressure compensating valve spool positioned by difference in pressure receiving areas for load and inlet pressures 失效
标题翻译：压力补偿阀由压力接收区域负载和入口压力的差异定位
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）。

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