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1. 发明专利

JPH11322278A SAFETY DEVICE FOR CRANE WITH LUFFING JIB 失效
公开(公告)号：JPH11322278A
公开(公告)日：1999-11-24
申请号：JP12876598
申请日：1998-05-12
申请人： SUMITOMO CONSTR MACH
发明人： KAHARA AKIRA , OHASHI HIROSHI
IPC分类号： B66C23/88
摘要： PROBLEM TO BE SOLVED: To prevent an attachment from a dangerous condition due to an erroneous operation when a crane with a luffing jib is operated from a crane working position to a crane assembly/disassembly position or operated reversely so as to accomplish improvement in safety and operability, prevention of breakage, and reduction in labor of an operator in an operation time. SOLUTION: In a crane with a luffing jib, a ground angle detector 15 for a front post 4 is arranged in the front post 4, while a ground angle detector 16 is arranged similarly in a rear post 5. On the basis of a detected angle θF and a detected angle θR from the ground angle detectors 15, 16, an included angle θM between the front post 4 and the rear post 5 is calculated according to an expression: θM=X-θF-θR (X: a value variable according to a boom condition). From the included angle θM, a safety area of a tangent distance between the base fixed part of the luffing jib 2 and the base faxed part 4a of the front post 4 is sorted out, and an alarm is given to an operation room.

2. 发明专利

JPH09278375A SUSPENSION PENDANT ROPE TENSION CORRECTING DEVICE FOR CRANE WITH WEIGHT TRUCK 失效
公开(公告)号：JPH09278375A
公开(公告)日：1997-10-28
申请号：JP9704796
申请日：1996-04-18
申请人： SUMITOMO CONSTR MACH
发明人： KAHARA AKIRA , OHASHI HIROSHI
IPC分类号： B66C23/76
摘要： PROBLEM TO BE SOLVED: To prevent a mast boom from being damaged so as to improve safety by correcting tension deference between lateral suspension pendant ropes in a crane with a weight truck. SOLUTION: Lateral suspension pendant ropes 25L, 25R of a crane with a weight truck 4 are respectively provided with tension detectors 33L, 33R so as to measure the tension difference between the lateral suspension pendant ropes 25L, 25R. Suspension cylinders 37 of axles 36a-36d of the weight truck 4 are mutually expanded/contracted so as to offset this tension difference.

3. 发明专利

JPH09240504A TRUCK STEERING CONTROLLER FOR CRANE PROVIDED WITH WEIGHT TRUCK 失效
公开(公告)号：JPH09240504A
公开(公告)日：1997-09-16
申请号：JP4764796
申请日：1996-03-05
申请人： SUMITOMO CONSTR MACH
发明人： OHASHI HIROSHI , KAHARA AKIRA
IPC分类号： B62D7/14 , B66C23/42
摘要： PROBLEM TO BE SOLVED: To improve turning operability as well as to prevent failures by reasonably turning wheels of a weight truck in turning or traveling of a main body of a crane provided with the weight truck. SOLUTION: A bracket 38 is pivotally attached to a truck frame 36 of a weight truck so as to be freely and horizontally turned. A wheel 31 is mounted on the bracket 38, a suspension cylinder 39 is attached to it, and reaction of the wheel 31 from the ground surface is detected by a pressure detector 45. If the reaction exceeds a constant value when the wheel 31 is turned, a jack cylinder is automatically operated, the weight truck is floated, and the wheel 31 is separated from the ground surface. If the wheel 31 is turned by operating a steering cylinder 47 in that state, the turning operation can be extremely easily performed since the touch ground resistance of the wheel 31 is low.

4. 发明专利

JPH09227076A BALANCE CONTROL DEVICE FOR CRANE WITH WEIGHT CARRIAGE 失效
公开(公告)号：JPH09227076A
公开(公告)日：1997-09-02
申请号：JP3991696
申请日：1996-02-27
申请人： SUMITOMO CONSTR MACH
发明人： OHASHI HIROSHI , KAHARA AKIRA
IPC分类号： B66C23/92
摘要： PROBLEM TO BE SOLVED: To improve safety by preventing a boom or the like from being rocked when a suspended cargo is lifted or lowered by a crane with a weight carriage. SOLUTION: A suspension cylinder 36 is provided on the suspension 35 of a weight carriage 3 to apply pressing force to wheels 34. Tension detectors 26, 33 are provided on a mast pendant rope 18 and a weight carriage pendant rope 24 respectively, and their detection results M, W are outputted to a controller 32. The mast pendant rope tension specified value M0 and the weight carriage pendant rope tension limit value W0 are set to the controller 32, and the winding of a winding rope 7 and the delivery of a boom erecting/prostrating rope 16 are prohibited when M>M0 and W>=W0 . The pressing force of the suspension cylinder 36 is reduced when M>M0 and W

5. 发明专利

JPH09208181A WORK MODE AUTOMATICALLY JUDGING DEVICE FOR CRANE 失效
公开(公告)号：JPH09208181A
公开(公告)日：1997-08-12
申请号：JP2140096
申请日：1996-02-07
申请人： SUMITOMO CONSTR MACH
发明人： KAHARA AKIRA , OHASHI HIROSHI
IPC分类号： B66C13/18 , B66C13/00 , B66C15/00 , B66C23/70 , B66C23/88
摘要： PROBLEM TO BE SOLVED: To enhance safety of work by automatically judging the work mode of a crane from an attachment mounted on a machine body, displaying it, and preventing the erroneous operation of the crane to be generated caused by the mistake of the operator. SOLUTION: Such as a boom detecting means 11, a jig detecting means 12, or the like, a means for detecting the presence of respective type of attachments is provided, and a mode setting switch 19 for setting and inputting the work mode by an operator is provided. The work mode based on the specification of the actually mounted machine is automatically judged by a work mode sensing device 18 on the basis of detected signals (B, J,...) from respective detecting means 11 to 17. The work mode set by the operator is judged by the mode set managing device 20 on the basis of a set specification signal from the mode setting switch 19. The data MD1 and MD2 of both work modes are compared with each other by a mode comparing managing device 21, and whether the work mode set by the operator is normal or abnormal is displayed by a mode display lamp 22. If the setting is normal, a work safety device 23 is operated and made into the operable state.

6. 发明专利

JPH09165192A BOOM DERRICKING DEVICE OF CRANE PROVIDED WITH WEIGHT TRUCK 失效
公开(公告)号：JPH09165192A
公开(公告)日：1997-06-24
申请号：JP33074895
申请日：1995-12-19
申请人： SUMITOMO CONSTR MACH
发明人： OHASHI HIROSHI
IPC分类号： B66C23/60 , B66C23/74 , B66C23/82
摘要： PROBLEM TO BE SOLVED: To improve safety by considering the of between load to a main body and load to a weight truck in relation to load in a weight truck provided crane. SOLUTION: A boom 2 and a mast boom 6 are pivotally attached to a main body 4 of a weight truck provided crane 31 so as to be freely and longitudinally turned, the tip of the boom 2 is connected to the tip of the mast boom 6 by a boom pendant rope 32. A suspension bracket 36 is provided between the main body 4 and the weight truck 5, a link 37 is connected to the suspension bracket 36, and the tip of the mast boom 6 is connected to the link 37 by a mast boom pendant rope 33 and a mast boom derricking rope 40. Load of the hook is loaded to the main body 4 and the weight truck 5 through the suspension bracket 36 at the optional constant rate.

7. 发明专利

JPH09165191A TRUCK HOLDING DEVICE OF CRANE PROVIDED WITH WEIGHT TRUCK 失效
公开(公告)号：JPH09165191A
公开(公告)日：1997-06-24
申请号：JP33074795
申请日：1995-12-19
申请人： SUMITOMO CONSTR MACH
发明人： OHASHI HIROSHI
IPC分类号： B66C23/74 , B66C23/76
摘要： PROBLEM TO BE SOLVED: To improve lifting performance and safety by considering the balance of load to a main body and load to a weight truck in relation to load, and decreasing load to the main body. SOLUTION: A high mast 32 is pivotally attached together with a boom 2 and a mast boom 6 to a main body 4 of a weight truck provided crane 31 so as to be freely and longitudinally turned. The tip of the high mast 32 is positioned above a weight truck 5, and sheaves 35, 36 for lifting the weight truck are suspended from the tip of the high mast 32. A weight truck load rope 37 is laid between the sheaves 35, 36 and connected to a winch unit 3, and the top of a bracket 38 attached to the weight truck 5 is connected to the sheave 36 by a link 39. Load of the hook 11 is preferentially loaded to the weight truck 5, and therefore, the rate of load to a main body 4 is decreased.

8. 发明专利

JPH09142782A CONNECTING PIN DETENT DEVICE FOR CRANE OR THE LIKE 失效
公开(公告)号：JPH09142782A
公开(公告)日：1997-06-03
申请号：JP29679795
申请日：1995-11-15
申请人： SUMITOMO CONSTR MACH
发明人： KAHARA AKIRA , OHASHI HIROSHI
IPC分类号： B66C23/26 , B66C23/64 , B66C23/82
摘要： PROBLEM TO BE SOLVED: To provide a connecting pin rotation stop mechanism wherein a connection pin is easily inserted/pulled out without using a finger and thus there is no danger of catching the finger during inserting/pulling out unlike the conventional case. SOLUTION: A guide plate 14 for detent is provided in the end surface of a connection pin 3 and the guide plate 14 is guided by a guide bracket 15 for attaching an expanded/contracted cylinder 8 to an upper frame so as to be slid only in the longitudinal direction. A pair of protruding pieces 14a are provided in the guide plate 14 and the protruding pieces 14a are guided by guiding slits 15a provided in the longitudinal direction of the guide bracket 15.

9. 发明专利

JPH0986881A BOOM BACK STOP OF CRANE 失效
公开(公告)号：JPH0986881A
公开(公告)日：1997-03-31
申请号：JP24799695
申请日：1995-09-26
申请人： SUMITOMO CONSTR MACH
发明人： OHASHI HIROSHI
IPC分类号： B66C23/88 , B66C23/90
摘要： PROBLEM TO BE SOLVED: To miniaturize a back stop equipped on a crane and reduce its weight and cost. SOLUTION: A middle cylinder body 31 is inserted in an outer cylinder body 30 coaxially and slidably. The middle cylinder body 31 is energized to the tip direction of a back stop 27 by a first coil spring 32. A support shaft 33 is inserted in this middle cylinder body 31 coaxially and slidably. The support shaft 33 is energized in the tip direction of the back stop 27 by a second coil spring 36. The stroke can be enlarged without enlarging the free length L1 of the back stop 27.

10. 发明专利

JPH0986880A SAFETY DEVICE OF CRANE 失效
公开(公告)号：JPH0986880A
公开(公告)日：1997-03-31
申请号：JP24989595
申请日：1995-09-27
申请人： SUMITOMO CONSTR MACH
发明人： OHASHI HIROSHI , KAHARA AKIRA
IPC分类号： B66C23/88 , B66C23/90
摘要： PROBLEM TO BE SOLVED: To prevent the winding up operation of an elevation rope beyond the upper limit of the elevation angle of a boom or jib, even if an assembly/ disassembly mode switch is switched to ON, when the boom or jib of a crane is erected in a work mode. SOLUTION: A first limit switch 20 turned off by the detection of the upper limit of the elevation angle of a boom or jib and a second limit switch 21 turned off by the detection of the upper limit of the elevation angle and the relay switch 23 for an elevation winch winding up are connected in series. A third limit switch 29 turned off by the detection of the set value of the elevation angle is installed on the boom or jib and this third limit switch 29 is connected in series with an assembly/disassembly mode switch 25 and arranged in a line for the first/second limit switches 20, 21.

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