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1. 发明授权

KR870000506B1 HYDRAULIC CIRCUIT SYSTEM FOR CIVIL ENGINEERING AND ARCHITECTURAL MACHINERY 失效
公开(公告)号：KR870000506B1
公开(公告)日：1987-03-12
申请号：KR820001934
申请日：1982-04-30
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： TAMURA SEIJI , TOSHIMICHI IKEDA , TOICHI HIRATA
IPC分类号： E02F9/22 , E02F3/43
摘要： This circuit is composed of oil-hydraulic pumps(20,24), multiple driving devices, and direction control valves, which control the direction and amount of the oil from the pump. The first boom direction control valve(28) and a flowing direction control valve are connected to the first pump(20) in a parallel circuit. A circling direction control valve(26), an arm direction valve(25), and the second boom direction control valve(29) are connected to the second pump(24) in a parallel cirucit. Another direction control valve(23) is connected to the valves (26,25,29) in tandem at the lower course. The inlet port of the direction control valve(27) is connected with that of the valve(23) by a connecting pipe(30).

2. 发明授权

KR850001255B1 ACTUATOR OF ONE ROD CYLINDER 失效
公开(公告)号：KR850001255B1
公开(公告)日：1985-08-26
申请号：KR820000065
申请日：1982-01-09
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： NAKAJIMA KICHIO , WATAMABE HIROSHI , HONMA KATSUO , IZUMI EIIKI , AOYAKI YUKIO
IPC分类号： F15B11/00 , F15B7/10 , F15B11/08 , F16K11/07

3. 发明授权

KR850000749B1 유압 전동장치에 있어서의 회로 압력제어장치 失效
公开(公告)号：KR850000749B1
公开(公告)日：1985-05-24
申请号：KR810001996
申请日：1981-06-03
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： IJUMI EIKI , AOYAKI YUKIO , NAKAJIMA KICHIO , WATANABE HIROSI , HONMA KAZUO
IPC分类号： F16H61/42 , F16H61/433 , F16H61/46 , F16H39/44

4. 发明授权

KR820000463B1 CONSTANT VELOCITY UNIVERSAL JOINT 失效
公开(公告)号：KR820000463B1
公开(公告)日：1982-04-03
申请号：KR780001100
申请日：1978-04-15
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： OHSHINA M , NAKAMURA YOZO
IPC分类号： F16D3/20
摘要： The three-roller constant velocity universal joint comprises two drive members(1,3), one of which includes three yoke pins(6) with rollers. Each roller has an inner movable member adapted to rotate about the axis of the associated yoke pin and move axially of the pin. An outer movable member(8) is disposed outside of the inner movable member(7) and tiltable with respect to the rotational axis of the inner movable member. The other drive member includes guide grooves (5) for guiding the outer movable members of the roller along the rotational axis of the drive member itself.

5. 发明授权

KR850001244B1 FLUSHING VALVE SYSTEM IN CLOSED CIRCUIT HYDROSTATIC POWER TRANSMISSION 失效
公开(公告)号：KR850001244B1
公开(公告)日：1985-08-23
申请号：KR820000904
申请日：1982-02-27
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： IZUMI EIKI , AOYAKI YUKIO , NAKAZIMA KICHIO , WATANABE HIROSHI , HONMA KATSO
IPC分类号： F15B11/08 , F16H39/02 , F16H61/40 , F16H61/4008 , F16H61/4104 , F16H61/4139

6. 发明公开

KR20210008065A 작업 기계 审中-公开
公开(公告)号：KR20210008065A
公开(公告)日：2021-01-20
申请号：KR20207035551
申请日：2019-03-29
申请人： HITACHI CONSTRUCTION MACH CO , HITACHI CONSTRUCTION MACHINERY TIERRA CO LTD
发明人： IMURA SHINYA , NAKATANI KENICHIRO
IPC分类号： E02F3/84 , E02F9/26
摘要： 블레이드가주행체에마련되고또한선회체가주행체의상측에선회가능하게마련된작업기계에있어서, 블레이드의수평좌표를산출할수 있는작업기계를제공한다. 작업기계는, 선회체의수평좌표및 방위를취득하는선회체위치취득장치와, 선회체의선회를검출하는선회검출장치와, 주행체의주행을검출하는주행검출장치와, 주행체의방위및 블레이드의수평좌표를산출하는컨트롤러를구비한다. 컨트롤러는, 선회체의선회가검출되지않고또한주행체의주행이검출된경우에, 선회체위치취득장치에서취득된선회체의수평좌표의궤적을사용하여, 주행체의방위를산출하고, 산출된주행체의방위와선회체위치취득장치에서취득된선회체의수평좌표및 방위에기초하여, 블레이드의수평좌표를산출한다.

7. 发明公开

KR20100085820A Construction machine 审中-公开
标题翻译：建筑机械
公开(公告)号：KR20100085820A
公开(公告)日：2010-07-29
申请号：KR20090095380
申请日：2009-10-08
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： HIRAMATSU HIDEFUMI , KOBAYASHI TAKAHIRO , TABATA SHUJI
IPC分类号： E02F9/08 , F01P5/02 , F01P11/10
CPC分类号： E02F9/0866 , B60Y2200/412 , F01P5/02 , F01P11/10 , F04D29/5806
摘要： PURPOSE: A construction apparatus is provided to facilitate assembly by installing a utility room on a frame without the installation of new components. CONSTITUTION: A construction apparatus comprises a frame(6), an engine, a first heat exchanger(21), a second heat exchanger(25), and a main body cover. The frame forms the support structure of a vehicle body. The engine is mounted in the frame and drives a hydraulic pump(18). The first heat exchanger cools fluid heated by a cooling fan driven in the engine. The second heat exchanger cools the fluid heated by the cooling fan driven by the drive motor. The main body cover covers the engine, the first heat exchanger, and the second heat exchanger.
摘要翻译：目的：提供一种施工设备，以便在没有安装新的部件的情况下在车架上安装杂物间来方便组装。构成：施工装置包括框架（6），发动机，第一热交换器（21），第二热交换器（25）和主体盖。框架形成车体的支撑结构。发动机安装在框架中并驱动液压泵（18）。第一个热交换器冷却由发动机驱动的冷却风扇加热的流体。第二热交换器冷却由驱动马达驱动的冷却风扇加热的流体。主体盖覆盖发动机，第一热交换器和第二热交换器。

8. 发明授权

KR870000168B1 액압동력계의 제어장치 失效
公开(公告)号：KR870000168B1
公开(公告)日：1987-02-13
申请号：KR810003829
申请日：1981-10-08
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： IZUMI EIKI , WADANABE HIROSHI , AOYAKI YUKIO , HONMA GAZUO , NAKAJIMA GICHIO
IPC分类号： F02D29/04 , B60W10/06 , B60W10/10 , B60W30/18 , E02F9/22 , F02D41/38 , F04B49/00 , F16H61/42 , F16H61/46 , F16H61/465

9. 发明授权

KR860001715B1 CONTROL SYSTEM FOR HYDRAULIC CIRCUIT APPARATUS 失效
公开(公告)号：KR860001715B1
公开(公告)日：1986-10-18
申请号：KR820004441
申请日：1982-09-30
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： WATANABE HIROSHI , IZUMI EIKI , NAKAJIMA KICHIO , HONMA KAZUO , AOYAKI YUKIO
IPC分类号： B66C13/18 , E02F9/20 , E02F9/22 , F15B11/16 , F15B11/17 , F15B21/08
摘要： In an excavator, a first pump drives an arm cylinder, three pumps drive the boom cylinder, and the third pump drives the bucket cylinder. On-off valves control the connection between the first pump and the arm cylinder. A judging circuit determines whether or not the first pump is in hydraulic connection with the boom cylinder when the operation sygnal for the arm cylinder is received. The arm cylinder then takes precedence over the boom cylinder for hydraulic connection with the first pump, and the boom cylinder is brought into hydraulic connection with the second pump.

10. 发明授权

KR860000755B1 CONTROL SYSTEM OF HYDRAULIC CIRCUIT APPARATUS 失效
公开(公告)号：KR860000755B1
公开(公告)日：1986-06-18
申请号：KR820001349
申请日：1982-03-29
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： WATANABE HIROSHI , AOYAKI YUKIO , NAKAZIMA KICHIO , IZUMI EIKI , HONMA KATSUO
IPC分类号： F04B49/06 , F15B9/04 , F15B21/08 , G05D3/14
摘要： A control system for hydraulic pump includes two maximum speed- setting cirucits selected according to the direction of motion of the variable displacement actuator. The pump(4) includes a swash plate(8) of which the angle is adjusted by a driver(10) to vary the pump displacement volume. The operating speed of the actuator(6) depends on the swash plate position. The position is determined by the control lever(14) and by the motion of actuator. Two maximum speeds of pump are determined in a circuit(24) and a second maximum speed generating circuit(26) switch(28) responsive to two comparators(30,32).

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