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91. 发明申请

WO1991003672A1 HIGH SPEED SOLENOID VALVE DEVICE 审中-公开
标题翻译：高速电磁阀装置
公开(公告)号：WO1991003672A1
公开(公告)日：1991-03-21
申请号：PCT/JP1990001145
申请日：1990-09-06
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD. , ICHIKI, Nobuhiko
发明人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
IPC分类号： F16K31/06
CPC分类号： F16K31/0668 , F16K31/406 , Y10T137/7766
摘要： This invention relates to a high speed solenoid valve device equipped with a main body (30), a high speed solenoid valve portion (30S) disposed inside the main body and a logic valve portion (30L). In order to reduce the overall dimension of the apparatus, a plate (32) for allowing a solenoid valve sleeve (31) and a control chamber (22) to communicate with a solenoid valve input port (31b) is guided directly by the inner wall of the main body (30), a solenoid valve output port (31a) is formed directly in the solenoid valve sleeve (31) and these solenoid valve sleeve (31), plate (32) and logic valve sleeve (33) are disposed inside the main body in a close contact and stacked state. When the coil of the solenoid valve is not excited, the solenoid valve and the logic valve are closed by the action of a return spring (24) and the communication between a main body input port (11) and an output port (12) is cut off. When the coil is excited, the solenoid valve is opened and consequently, the logic valve is opened and the main body input port (11) and the output port (12) communicate with each other.
摘要翻译：本发明涉及配备有主体（30），设置在主体内的高速电磁阀部分（30S）和逻辑阀部分（30L）的高速电磁阀装置。为了减小设备的整体尺寸，用于允许电磁阀套筒（31）和控制室（22）与电磁阀输入端口（31b）连通的板（32）直接由内壁（31），电磁阀套（31），板（32）和逻辑阀套（33）配置在主体（30）内，电磁阀输出口（31a）直接形成在电磁阀套主体紧密接触并堆叠状态。当电磁阀的线圈不被激励时，电磁阀和逻辑阀通过复位弹簧（24）的作用而闭合，并且主体输入端口（11）和输出端口（12）之间的连通是隔断。当线圈激励时，电磁阀打开，逻辑阀打开，主体输入口（11）和输出口（12）相互连通。

92. 发明申请

WO1991002905A1 HYDRAULIC DRIVING APPARATUS OF CIVIL ENGINEERING/CONSTRUCTION EQUIPMENT 审中-公开
标题翻译：液压驱动装置的土木工程/施工设备
公开(公告)号：WO1991002905A1
公开(公告)日：1991-03-07
申请号：PCT/JP1990001062
申请日：1990-08-21
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD. , NAKAMURA, Kazunori
发明人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
IPC分类号： F15B11/00
CPC分类号： F15B11/165 , E02F9/2232 , E02F9/2235 , E02F9/2296 , F15B2211/20553 , F15B2211/30525 , F15B2211/3053 , F15B2211/3111 , F15B2211/324 , F15B2211/351 , F15B2211/50536 , F15B2211/6054 , F15B2211/6057 , F15B2211/6309 , F15B2211/6313 , F15B2211/6333 , F15B2211/67 , F15B2211/7142
摘要： A hydraulic driving apparatus of civil engineering/construction equipment of the present invention which includes a main hydraulic pump (2) of a variable capacity type, a plurality of actuators (3, 4) driven by pressure oil discharged from this main hydraulic pump, a plurality of flow rate regulation valves (5, 6) for controlling the flows of the pressure oil supplied to these actuators and pump controllers (30; 30A; 30B) for receiving the pressure difference between the discharge pressure of the main hydraulic pump and the maximum of load pressures of a plurality of actuators as a load sensing pressure difference and for controlling the discharge flow rate of the main hydraulic pump so that this load sensing pressure difference becomes equal to a predetermined target pressure difference, characterized by including flow rate maintaining means (8c; 18) which has zones (8c; 19) insensitive to the pressure difference between a load sensing pressure difference and the target pressure difference, suspends the control by the pump controllers (30; 30A; 30B) when the difference described above exists within the insensitive zones and maintains the discharge flow rate of the main hydraulic pump (2) at a substantially constant level.
摘要翻译：包括可变容量型的主油压泵（2），一组致动器的液压驱动装置（3,4）由油驱动下，所述主液压泵排出的带压力，一组流量控制阀的（5,6）控制供应到致动器的压力油的流量，以及泵控制装置（30; 30A; 30B）接收所述主液压泵的排出压力和之间的压力差作为负载传感压力差的一组致动器的最大负载压力，并控制主液压泵的排放速率，使得该负载传感压力差等于差值确定的目标压力。该装置的特征在于它包括一个流动保持部件（图8c; 18）包括区域（图8c; 19）不敏感的负载感测压力差和压力差之间的压力差目标，并且其暂停由泵控制装置的控制（30; 30A; 30B）时前述差的不敏感区域内发生，并且保持主液压泵的排放流率（2）基本不变的水平。

93. 发明申请

WO1991002247A1 ULTRASONIC INSPECTION APPARATUS 审中-公开
标题翻译：超声波检查装置
公开(公告)号：WO1991002247A1
公开(公告)日：1991-02-21
申请号：PCT/JP1990000754
申请日：1990-06-08
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD. , TAKISHITA, Yoshihiko , SASAKI, Souji
发明人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
IPC分类号： G01N29/22
CPC分类号： G01N29/30 , G01N29/22 , G01N29/262 , G01N2291/044 , G01N2291/106 , G10K11/345
摘要： An ultrasonic inspection apparatus comprising a large number of array oscillators (101 ∩ 10n) in a columnar shape. The oscillators are excited sequentially to generate a sequence of ultrasonic beams to scan an object of inspection. The reflection from the object is analyzed to inspect the surface condition of the object and the existence of any fault inside it. Before an inspection, ultrasonic scanning of a reference material having a uniform quality and free from any defects is performed in order to collect the reference data for each ultrasonic beam (each channel). Correction values are prepared on the basis of these reference data and the reception signals obtained by the ultrasonic scanning of the object are corrected by use of these correction values. One correction means determines the ratio of the mean value of the reference value to the reference value of the channel for each channel, multiplies the reception signal of the same channel by the ratio as the correction value and uses the product as the data to be displayed on a display unit (21). Another correction means determines a damping ratio to the reference value of each channel so that the reference value of each channel becomes a minimum value or a predetermined value below the minimum value, and the reception signal of the same channel is damped by a sensitivity leveling circuit (31) using the damping ratio. Variance of sensitivity between the channels can be eliminated by these correction means.

94. 发明申请

WO1990011413A1 HYDRAULIC DRIVE UNIT FOR CIVIL ENGINEERING AND CONSTRUCTION MACHINERY 审中-公开
标题翻译：民用工程及建筑机械液压驱动装置
公开(公告)号：WO1990011413A1
公开(公告)日：1990-10-04
申请号：PCT/JP1990000375
申请日：1990-03-20
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD. , TANAKA, Hideaki , HIRATA, Toichi , SUGIYAMA, Genroku , HAGA, Masakazu , KAJITA, Yusuke
发明人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
IPC分类号： E02F03/43
CPC分类号： E02F9/2235 , E02F9/2228 , E02F9/2285 , E02F9/2292 , E02F9/2296
摘要： A hydraulic drive unit provided with a hydraulic pump (11, 11A), a plurality of actuators (4-6) driven by a pressure oil supplied from the hydraulic pump, which include an arm cylinder (5) and a boom cylinder (4), a plurality of flow rate control valves (12, 14, 16) adapted to control the flows of the pressure oil supplied to these actuators, which include an arm direction control valve (14) and a boom direction control valve (12), and a plurality of divided flow compensating valves (13, 15, 17; 13A, 15A, 17A) adapted to control the pressure differences across these flow rate control valves and having driving means (13d, 15d, 17d; 13e, 13f, 15e, 15f, 17e, 17f) for setting target levels of pressure differences across the corresponding flow rate control valves. It is characterized in that it has a first means (21) for detecting an arm crowding action made by driving the arm cylinder (5), and second means (24, 30, 31; 24, 30A, 31) for controlling the driving means (15d, 15f) for the corresponding divided flow compensating valves (15; 15A) so that the target level of pressure difference across at least the flow rate control vale (14) related to the arm cylinder decrease when an arm crowding action is detected.

95. 发明申请

WO1990008263A1 HYDRAULIC DRIVING UNIT FOR CONSTRUCTION MACHINERY 审中-公开
标题翻译：建筑机械液压驱动装置
公开(公告)号：WO1990008263A1
公开(公告)日：1990-07-26
申请号：PCT/JP1990000048
申请日：1990-01-18
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD. , TATSUMI, Akira , HIRATA, Toichi , HAGA, Masakazu , IZUMI, Eiki
发明人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
IPC分类号： F15B11/00
CPC分类号： F16H61/4078 , B60W10/06 , E02F9/2235 , E02F9/2246 , E02F9/2296 , F15B2211/20553 , F15B2211/253 , F15B2211/50536 , F16H61/433 , F16H2059/6846
摘要： This invention relates to a hydraulic driving unit provided with: an engine (1); a variable capacity hydraulic pump (2) driven by said engine; at least one hydraulic actuator driven by oil delivered from the pump (6); a control valve means (8) for interconnecting the hydraulic pump and actuator and controlling the flow rate of hydraulic fluid fed to the actuator according to the degree of operation of an operating means (58); a pump control means (17) for controlling the displacement volume of the hydraulic pump according to the degree of operation of the operating means so that the discharge quantity of the hydraulic pump increases as the aforesaid degree of operation increases; and an engine control means (29) for controlling the RPM of the engine. The engine control means (29) monitors whether or not the discharge quantity of the hydraulic pump (2) reaches saturation and, when a specified saturation condition is reached by hydraulic pump, it can exhibit such functions (33, 36) as increasing the RPM of the engine (1) and eliminating saturation.

96. 发明申请

WO1990001630A1 REMOTE CONTROLLER OF ENGINE 审中-公开
标题翻译：发动机遥控器
公开(公告)号：WO1990001630A1
公开(公告)日：1990-02-22
申请号：PCT/JP1989000800
申请日：1989-08-03
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD. , TOMIKAWA, Osamu , HIRATA, Touichi , TATSUMI, Akira , HAGA, Masakazu , EGASHIRA, Masaki , WATANABE, Hiroshi
发明人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
IPC分类号： F02D41/40
CPC分类号： F02D11/10 , F02D31/009
摘要： This invention relates to a remote controller which outputs an electrical operation signal from an operation device (10) to the driving device (6) of a governor mechanism (2) of an engine (1) to remote-control the governor mechanism (2). This remote controller includes a detection device (8) for detecting a control quantity of the governor mechanism (2) and a control device (13) to which an operation signal from the operation device (10) and a detection signal from the detection device (8) are inputted. When the difference between a control quantity at a certain time and a control quantity detected a predetermined prior to that time is below a predetermined value, this control device (13) judges this state as an operation limit of the governor mechanism (2) and outputs a stop signal to the driving device (6). In this manner, damage to the governor mechanism (2) and the driving device (6) is prevented.

97. 发明申请

WO1989011041A1 HYDRAULIC DRIVE UNIT FOR CONSTRUCTION MACHINERY 审中-公开
标题翻译：建筑机械液压驱动装置
公开(公告)号：WO1989011041A1
公开(公告)日：1989-11-16
申请号：PCT/JP1989000479
申请日：1989-05-10
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD. , HIRATA, Toichi , SUGIYAMA, Genroku , KAJITA, Yusuke
发明人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
IPC分类号： F15B11/05
CPC分类号： F15B21/087 , E02F9/2225 , E02F9/2232 , E02F9/2296 , F15B11/163 , F15B13/0417 , F15B2211/20553 , F15B2211/25 , F15B2211/30535 , F15B2211/3057 , F15B2211/3111 , F15B2211/329 , F15B2211/50527 , F15B2211/50536 , F15B2211/5157 , F15B2211/526 , F15B2211/55 , F15B2211/6054 , F15B2211/6313 , F15B2211/6654 , F15B2211/7058 , F15B2211/71
摘要： A hydraulic drive unit comprises a hydraulic pump (1), a plurality of hydraulic actuators (2, 3) driven by the hydraulic oil supplied from the hydraulic pump, a plurality of flow rate control valves (4, 5) for controlling the flow of the hydraulic oil, and a plurality of branch flow compensating valves (6, 7) for respectively controlling the differential pressure preceding or following each of the flow rate control valves, the plurality of actuators (2, 3) including a first actuator (2) whose load pressure tends to become relatively large and a second actuator (3) whose load pressure is smaller than that of the first actuator. Branch flow control means (22, 33) are provided to control the branch flow compensating valve (7) involved in controlling the second actuator in such a manner that, while the first and second actuators (2, 3) are being driven on a multiplicable basis, the preceding and following pressure (Pz2-P12) of the flow rate control valve (5) involved in the second actuator (3) is made greater than the pressure (Pz1-P11) thereof.

98. 发明申请

WO1989001138A1 METHOD OF MEASURING CONTACT STRESS WITH ULTRASONIC WAVE 审中-公开
标题翻译：用超声波测量接触应力的方法
公开(公告)号：WO1989001138A1
公开(公告)日：1989-02-09
申请号：PCT/JP1987000564
申请日：1987-07-30
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD. , MIYAJIMA, Takeshi
发明人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
IPC分类号： G01L01/00
CPC分类号： G01L1/255
摘要： This invention relates to a method of measuring contact stress on a contact surface of a thin sheet (mainly up 2 to 3 mm thick) in contact with other solid by utilizing a sheet wave available in one of the ultra-sonic modes. A probe is brought into contact with the thin sheet, an ultrasonic wave is projected to the thin sheet from the probe to generate the sheet wave, the resulting sheet wave is propagated through the thin sheet and passed through the contact surface and the contact stress is measured by use of the sound pressure of the passing sheet wave as an index of evaluation. It becomes thus possible to measure the contact stress between the thin sheet and other solid, which has been measured conventionally only by dipping the thin sheet into a liquid tank, without using the liquid tank, both statically and dynamically, quantitatively, rapidly and moreover on a real time basis.
摘要翻译：本发明涉及一种通过利用超声波模式之一提供的薄片波，来测量与其它固体接触的薄片（主要是2至3mm厚）的接触表面上的接触应力的方法。探针与薄片接触，超声波从探针投射到薄片上以产生薄片波，所得薄片波通过薄片传播通过接触表面，接触应力为通过使用通过的纸张波的声压作为评价指标来测量。因此，可以测量薄片和其它固体之间的接触应力，其通常仅通过将薄片浸入液体罐中而不使用液体仓即时静态和动态地定量地快速地进行测量，而且在一个实时的基础。

99. 发明申请

WO1988009931A1 METHOD OF MEASURING DEPTH OF SURFACE OPENING DEFECTS OF A SOLID MATERIAL BY USING ULTRASONIC WAVES 审中-公开
标题翻译：使用超声波测量固体材料表面缺陷的方法
公开(公告)号：WO1988009931A1
公开(公告)日：1988-12-15
申请号：PCT/JP1987000358
申请日：1987-06-08
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD. , MIYAJIMA, Takeshi
发明人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
IPC分类号： G01N29/04
CPC分类号： G01N29/11 , G01N29/0618 , G01N29/07 , G01N29/2487 , G01N29/30 , G01N29/40 , G01N29/4445 , G01N2291/02854 , G01N2291/0421 , G01N2291/0422 , G01N2291/044 , G01N2291/056 , G01N2291/101
摘要： This invention is related to a method of measuring the depth of surface opening defects of a solid material by utilizing chiefly ultrasonic waves. Ultrasonic waves are permitted to fall on the surface opening defects while being scanned with a probe back and forth and a threshold value of a predetermined level is set onto an echo envelope that is formed by the echoes of ultrasonic waves reflected depending upon the moving positions of the probe from the surface opening defects. The region that exceeds the threshold value is integrated for a range in which the probe has moved in said region, and the depth of the surface opening defects is measured with the area value of the region calculated by integration as an evaluation index. This makes it possible to measure the depth of cracks in the welded portion or the depth of surface opening defects such as cracks of the member caused by fatigue in a portion where the stress concentrates, non-destructively, easily, highly precisely and in real time.

100. 发明申请

WO1988002441A1 DRIVING CONTROL APPARATUS FOR HYDRAULIC CONSTRUCTION MACHINES 审中-公开
标题翻译：液压施工机械驱动控制装置
公开(公告)号：WO1988002441A1
公开(公告)日：1988-04-07
申请号：PCT/JP1987000737
申请日：1987-10-02
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD. , TATSUMI, Akira
发明人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
IPC分类号： F02D29/04
CPC分类号： E02F9/2246 , E02F9/2296 , F02D29/04
摘要： A driving control apparatus for hydraulic construction machines, which is provided with a motor (1), a hydraulic pump (2; 90) driven by the motor (1), at least one hydraulic actuator (3) driven by the oil discharged from this hydraulic pump (2; 90), a first revolution number setting means (7; 80) including a first operating means (5) for setting the number of revolutions per minute of the motor (1), and a second operating means (8, 9) for controlling the operation of the hydraulic actuator (3). This apparatus is further provided with a second revolution number setting means (20, 24; 60, 61; 81; 84; 85, 87; 92; 93) connected to the second operating means (8) and adapted to output a revolution number control signal, by which the set number of revolutions of the motor (1) is increased, when the displacement of the second operating means (8) has exceeded a predetermined level (X0; X'0), and a revolution number control means (21; 32; 40; 62; 77, 82; 86) which is connected to at least the second revolution number setting means, and which is adapted to make effective the number of revolutions set by the first revolution number setting means (7; 80), in a first region (Z1) in which the displacement of the second operating means (8) is at least not higher than the predetermined level (X0; X'0), and set, in a second region (Z2) in which the displacement of the second operating means (8) is higher than the predetermined level (X0; X'0), the number of revolutions corrected by the revolution number control signal from the second revolution setting means and higher than the number of revolutions set by the first revolution number setting means (7; 80).

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