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1. 发明专利

JP2001227623A REVOLVING REDUCTION GEAR FOR CONSTRUCTION MACHINE 失效
公开(公告)号：JP2001227623A
公开(公告)日：2001-08-24
申请号：JP2000040214
申请日：2000-02-17
申请人： SUMITOMO CONSTR MACH
发明人： HIGUCHI TSUTOMU
IPC分类号： E02F9/02 , F16H57/04
摘要： PROBLEM TO BE SOLVED: To prolong the replacement time of gear oil and to improve the service life of a gear and a bearing by removing foreign matters in the gear oil in a revolving reduction gear for a construction machine. SOLUTION: In this revolving reduction gear for a construction machine 1, a gear oil chamber 8 enclosing a planetary gear mechanism part 5 of the revolving reduction gear 1, and bearings 7a, 7b of an output shaft 6 is filled with gear oil 11 for lubricating the planetary gear mechanism part 5, and the bearings 7a, 7b. A pipe 13 for communicating the upper and lower parts of the gear oil chamber 8 is provided outside the gear oil chamber 8, a metallic mesh 14 is interposed in the pipe 13, the gear oil 11 in the gear oil chamber 8 is guided to the pipe 13 by centrifugal force produced by rotating of the planetary gear mechanism part 5, and foreign matters in the gear oil 11 are removed by the metallic mesh 14 to purify the gear oil 11.

2. 发明专利

JP2001207482A HYBRID SHOVEL 失效
公开(公告)号：JP2001207482A
公开(公告)日：2001-08-03
申请号：JP2000020668
申请日：2000-01-28
申请人： SUMITOMO CONSTR MACH
发明人： OSUGA TADAO , KOMORIYA TADAO , KUBO TAKASHI
IPC分类号： E02F9/20 , B60K6/20 , B60K6/46 , B60L7/22 , B60W10/08 , B60W10/18 , B60W10/26 , B60W10/30 , B60W20/00 , E02F9/00 , F02D29/04 , F02D29/06 , B60K6/02
摘要： PROBLEM TO BE SOLVED: To provide a hybrid shovel improving operability, and saving energy. SOLUTION: In a hydraulic circuit of a hydraulic cylinder 7 for driving a work machine, a hydraulic motor connected to a regenerative generator 8 is arranged in an oil draining circuit from the hydraulic cylinder 7. A rotating drive source is formed of a rotative motor generator 6. A traveling driving source is formed of a traveling motor 5. A power controller 4 carries out feed and charge between the regenerative generator 8, the rotative motor generator 6, the traveling motor 5, a generator motor 2 connected to an engine 1, and a battery 3.

3. 发明专利

JP2001206673A ELECTRIC MOBILE CRANE 失效
公开(公告)号：JP2001206673A
公开(公告)日：2001-07-31
申请号：JP2000022403
申请日：2000-01-31
申请人： SUMITOMO CONSTR MACH
发明人： OSUGA TADAO , KOMORIYA TADAO , KUBO TAKASHI
IPC分类号： B66C13/22 , B66C23/82 , B66C23/84
摘要： PROBLEM TO BE SOLVED: To improve the responsiveness of the drive sources of individual sections in an electric mobile crane and achieve energy saving. SOLUTION: The drive sources of the individual sections of this electric mobile crane are motorized, one or more motor-generators are used for the drive sources of a slewing section and a crane section, they are controlled by a control device for the functions of generators to take the braking actions of the slewing section and the crane section, and the regenerative electric power is obtained from a turn motor-generator 6 and/or a winch motor-generator 8.

4. 发明专利

JP2001191718A TRAVEL DRIVING DEVICE OF CRAWLER TRAVELING BODY 失效
公开(公告)号：JP2001191718A
公开(公告)日：2001-07-17
申请号：JP2000006216
申请日：2000-01-11
申请人： SUMITOMO CONSTR MACH
发明人： TOMITA YUKIHIRO , ISHII NOBUYUKI
IPC分类号： E02F9/02 , B60B37/00
摘要： PROBLEM TO BE SOLVED: To prevent damage of a traveling motor by biting-into of foreign matter such as rock between the traveling motor of a crawler traveling body and a drive sprocket as well as to facilitate making and maintenance of the drive sprocket. SOLUTION: In this travel driving device of a crawler traveling body having a traveling motor 7, a drive sprocket 10 rotatably driven by the traveling motor 7 and a crawler 6 actuated by the drive sprocket 10, the drive sprocket 10 is integrally formed on an outer peripheral surface of a casing 11 of the traveling motor 7 together with the casing 11.

5. 发明专利

JP2001182582A ENGINE CONTROL DEVICE FOR CONSTRUCTION MACHINE 失效
公开(公告)号：JP2001182582A
公开(公告)日：2001-07-06
申请号：JP36754999
申请日：1999-12-24
申请人： SUMITOMO CONSTR MACH
发明人： SAKAI NORIYUKI
IPC分类号： F02D45/00 , F02D29/04
摘要： PROBLEM TO BE SOLVED: To eliminate rapid high speed rotation at the start of an engine of a construction machine, and especially to prevent seize and break of the engine due to grease delay at low temperature. SOLUTION: This control device for a construction machine includes hydraulic pumps 6, 7 driven by the engine 1. Control valves 8-15 of a hydraulic actuator are connected to oil passages of the hydraulic pumps 6, 7, and the engine 1 is controlled by a controller 4 so as to provide a desired rotation speed by calculating a set voltage value of a throttle volume 2. The engine 1 starts with idling or low speed rotation based on a command signal by the controller 4, and the idling or low speed rotation state can be released based on an output signal of one of idle release switch 20, the throttle volume 2, a pressure switch 18 for detecting changeover of the control valves 8-10 and 12-14, and a pressure switch 19 for detecting changeover of the control valves 11, 15.

6. 发明专利

JP2001182093A EARTH REMOVING PLATE SUPPORTING STRUCTURE OF CONSTRUCTION MACHINE 失效
公开(公告)号：JP2001182093A
公开(公告)日：2001-07-03
申请号：JP36881699
申请日：1999-12-27
申请人： SUMITOMO CONSTR MACH
发明人： TOMINAGA TETSUYA
IPC分类号： E02F3/815
摘要： PROBLEM TO BE SOLVED: To provide earth removing plate supporting structure having strength capable of sufficiently withstanding even torsional force. SOLUTION: A reinforcing plate comprising a vertical member and a lateral member is installed inside an arm for supporting the earth removing plate of a construction machine. The vertical member is made to coincide or overlapped with the vertical position of an arm lateral plate inside an arm, and the lateral member is installed fixedly so that both ends thereof are brought into contact with points between the front part of the arm and the vertical member in the direction perpendicular to the vertical member.

7. 发明专利

JP2001158598A HYDRAULIC CONTROL OF CONSTRUCTION MACHINE 失效
公开(公告)号：JP2001158598A
公开(公告)日：2001-06-12
申请号：JP34521299
申请日：1999-12-03
申请人： SUMITOMO CONSTR MACH
发明人： ISHII NOBUYUKI
IPC分类号： B66C13/20 , B66C23/44 , B66D1/44 , F15B11/02 , F15B11/08
摘要： PROBLEM TO BE SOLVED: To enhance operation performance by changing the speed of a hydraulic actuator only by a control lever when operating the hydraulic actuator, in a construction machine. SOLUTION: If an operator operates a control lever 26 toward its hoisting side, pilot pressure oil is discharged from a remote control valve 27 in response to the control input of the control lever 26, at the same time, the pilot pressure oil is supplied to the pilot port 31 of a directional flow control valve 28, it is also supplied at the same time to the tilting regulator 30 of a hydraulic pump 25 and the tilting regulator 29 of a hydraulic motor 24 through a shuttle valve 33, and the passing flow rate of the directional flow control valve 28, the discharge of the hydraulic pump 25 and the absorbed quantity of the hydraulic motor 24 are varied by the pilot pressure. Therefore, the flow rate of the hydraulic motor 24 turns into a combined flow rate, and the hydraulic motor 24 is actuated by the combined flow rate to apply hoisting motion as a hydraulic actuator. Therefore, the speed of the hydraulic motor 24 (hydraulic actuator) can be changed only by the control lever 26 of the remote control valve 27.

8. 发明专利

JP2001158595A SAFETY DEVICE FOR CRANE 失效
公开(公告)号：JP2001158595A
公开(公告)日：2001-06-12
申请号：JP34521499
申请日：1999-12-03
申请人： SUMITOMO CONSTR MACH
发明人： ISHII NOBUYUKI
IPC分类号： B66C23/88 , B66C23/90
摘要： PROBLEM TO BE SOLVED: To prevent a front post or a rear post from being damaged by colliding against a pendant rope and a derricking rope when raising a tower boom and a jib, as for a crane intended for applying a derricking motion of a jib pivotally attached to the tip part of a tower boom by changing the relative angle of the front post and the rear post. SOLUTION: An angle to the horizontal plane of a tower boom is detected by an angle sensor 21, and an angle to the horizontal plane of a jib is detected by an angle sensor 22. The relative angle of the tower boom and the jib is computed in a controller 30 based on these detected values, and is displayed on a display 23. A relative angle of a front post and a rear post is computed, and if the relative angle is not less than a dangerous angle predetermined in advance, the danger is notified by a notifier 24, and the danger avoiding action is taken by stopping the drive of winches 18, 19.

9. 发明专利

JP2001123859A OPERATION MODE SELECTING DEVICE FOR CONSTRUCTION MACHINE 失效
公开(公告)号：JP2001123859A
公开(公告)日：2001-05-08
申请号：JP30414699
申请日：1999-10-26
申请人： SUMITOMO CONSTR MACH
发明人： SAKAI NORIYUKI
IPC分类号： E02F9/20 , F02D29/00 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To change over an operation mode without providing mode selection switch in a construction machine selecting and executing two different operation modes. SOLUTION: Turning-on/off of an idle control switch 19 and the turning-on/off of pressure switches 14, 15 are detected by a controller 30. When the idle control switch 19 is in an on state beyond a prescribed time, an actuator 18 is controlled by changing over form a 'single-touch-operation idle' mode or 'auto-idle' mode selected then to another operation mode.

10. 发明专利

JP2001081814A SHOCK REDUCING CIRCUIT OF HYDRAULIC EXCAVATOR 失效
公开(公告)号：JP2001081814A
公开(公告)日：2001-03-27
申请号：JP26114399
申请日：1999-09-14
申请人： SUMITOMO CONSTR MACH
发明人： TSUKAMOTO HIROYUKI
IPC分类号： E02F9/22 , E02F9/24 , F15B11/00
摘要： PROBLEM TO BE SOLVED: To reduce shock at the time of switching from the arm opening operation to the closing operation and to improve operability in a hydraulic excavator. SOLUTION: A shock reducing circuit 32 of a hydraulic excavator has an arm first speed selector valve 9 and an arm second speed selector valve 10, and is directly coupled to an arm open side pilot port 10c of the second arm second speed selector valve 10, and an oil path 36 is provided with a slow return valve 37. Thus, when an operating lever 23 of a remote controlled valve 16 is switched from the arm open side B to the arm close side A at a stroke, the arm second speed selector valve 10 is gently switched because return oil from the pilot port 10c is throttled by the slow return valve 37. Thus, the arm is further to be opened by the inertia force so that pressure oil discharged from the bottom side 2a of an arm cylinder 2 flows into a tank 26 during the gentle switching time of the arm second speed selector valve 10 to generate high pressure, thereby reducing a shock.

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