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41. 发明专利

JP2001315661A TRANSMISSION PART STRUCTURE FOR CRAWLER TYPE TRAVELING VEHICLE 失效
公开(公告)号：JP2001315661A
公开(公告)日：2001-11-13
申请号：JP2000134563
申请日：2000-05-08
申请人： SEIREI IND
发明人： TERAMOTO SEIJI , FUKUDA YUKIHIRO
IPC分类号： A01B69/00 , A01D69/00 , B60K17/04 , B62D11/08 , B62D11/10 , F16H47/04 , F16H48/10
摘要： PROBLEM TO BE SOLVED: To provide transmission part structure for a crawler type traveling vehicle allowing a vehicle body to positively travel straight to ensure safe travel. SOLUTION: A clutch means changeover-operative to cut off turning power to either one of right and left traveling parts or to cut off turning power to both traveling parts is provided at an intermediate part of a turning power transmission system. A pair of right and left transmission means are provided downstream of the clutch means, and the respective transmission means are interlockingly connected to a pair of right and left planetary gear mechanisms interlockingly connected to driving wheels of the right and left traveling parts.

42. 发明专利

JP2001260931A TRAVEL TRANSMISSION DEVICE FOR MOBILE AGRICULTURAL MACHINE 失效
公开(公告)号：JP2001260931A
公开(公告)日：2001-09-26
申请号：JP2001031058
申请日：2001-02-07
申请人： ISEKI AGRICULT MACH
发明人： SATOJI HISAYUKI
IPC分类号： B60K17/10 , B62D11/08 , B62D11/10
摘要： PROBLEM TO BE SOLVED: To provide a travel transmission device capable of being softly turned without devastating a field. SOLUTION: This mobile agricultural machine is provided with a work part at the front part of a travel undercarriage 7. When the rotation of the output shaft of a hydrostatic continuously variable transmission HST is transmitted to a power extraction part A, the power speed-changed by the hydrostatic continuously variable transmission HST is transmitted to right and left travel axles 34R, 34L via steering clutches 1R, 1L and a differential device 3, and the rotation of the case 4 of the differential device 3 is barked by a hydraulically operated braking mechanism to change the rotation ratio of the right and left travel axles 34R, 34L.

43. 发明专利

JP2001253361A CRAWLER TRAVEL VEHICLE 失效
公开(公告)号：JP2001253361A
公开(公告)日：2001-09-18
申请号：JP2000068980
申请日：2000-03-13
申请人： YANMAR AGRICULT EQUIP
发明人： HIDAKA SHIGEMI , AKASHIMA SUSUMU
IPC分类号： A01B69/00 , A01D69/00 , A01D69/06 , B60K17/10 , B60K25/02 , B62D11/10
摘要： PROBLEM TO BE SOLVED: To simplify and miniaturize the mounting structures of a speed changing pump 67 and a steering pump 69 and motors 68 and 70 thereof. SOLUTION: In a crawler travel vehicle, the speed changing pump 67, the motor 68, the steering pump 69 and the motor 70 are mounted on a transmission case 23. The driving force of an engine 21 is transmitted to the pump shaft 71 of one of the speed changing pump 67 and the steering pump 69, and the respective pump shafts 71 and 77 of the pumps 67 and 69 are connected together by gears 80, 81 and 82.

44. 发明专利

JP2001171547A CRAWLER TYPE TRAVELING VEHICLE 失效
公开(公告)号：JP2001171547A
公开(公告)日：2001-06-26
申请号：JP35528199
申请日：1999-12-15
申请人： YANMAR AGRICULT EQUIP
发明人： HIDAKA SHIGEMI
IPC分类号： A01B69/00 , A01D69/00 , B62D11/08 , B62D11/10 , B62D55/06
摘要： PROBLEM TO BE SOLVED: To make a switching position for spin turn or the like for reversing an inside traveling crawler for turning recognized, so as to enhance operability. SOLUTION: Operation force of a steering wheel 19 for operating a steering member 28 is changed stepwisely in this traveling vehicle provided with a speed change member 25 for driving left and right crawlers 2 in the same direction with the same speed, and the steering member 28 for driving the crawlers 2 reverse-directionally with tire same speed.

45. 发明专利

JP2001158374A CRAWLER VEHICLE STEERING SYSTEM WITH FAILURE DETECTION DEVICE 失效
公开(公告)号：JP2001158374A
公开(公告)日：2001-06-12
申请号：JP2000295541
申请日：2000-09-28
申请人： DEERE & CO
发明人： HOU YIFEI R , MISTRY SANJAY ISHVARLAL , BERGENE MARK ALLEN , TOPPIN SCOTT ALLEN
IPC分类号： B62D11/10 , B61C17/00 , B62D11/18 , B62D55/06
摘要： PROBLEM TO BE SOLVED: To detect failures related to a steering pump and prevent vehicle turning unless actual turning is commanded by a driver. SOLUTION: When a steering control signal indicates that a steering wheel 74 is turned in a direction opposite to the direction of rotation of a steering motor 42, a control unit 70 saves a first ratio value representing a ratio of the motor speed to the pump speed. When the signal is unchanged after a certain time duration, the control unit 70 saves a second ratio value representing a later ratio of the motor speed to the pump speed. The control unit then calculates a difference between the first and second ratio values, and generates a fault signal if the difference has a magnitude which is less than a predetermined magnitude. Thus, the control system generates a fault signal when the sensed signal indicates that the position of a steering pump swashplate is not changing as it should in response to changes in steering wheel position.

48. 发明专利

JP3160751B2 失效
公开(公告)号：JP3160751B2
公开(公告)日：2001-04-25
申请号：JP18377295
申请日：1995-07-20
IPC分类号： A01B69/00 , B60K20/02 , B62D9/00 , B62D11/10 , B62D11/18 , B62D11/24 , F02B75/02 , F16H9/00 , F16H61/00 , G05G1/01 , G05G1/24

49. 发明专利

JP3141134B2 失效
公开(公告)号：JP3141134B2
公开(公告)日：2001-03-05
申请号：JP2000166730
申请日：2000-06-02
IPC分类号： B62D11/10 , A01B69/00 , A01D69/00 , B62D6/00 , B62D11/22 , B62D101/00 , B62D113/00

50. 发明专利

JP2001055161A CRAWLER TYPE RUNNING VEHICLE 失效
公开(公告)号：JP2001055161A
公开(公告)日：2001-02-27
申请号：JP22887799
申请日：1999-08-12
申请人： YANMAR DIESEL ENGINE CO , SEIREI IND
发明人： KITASAKA YUJI , SAKAI TORU
IPC分类号： B60K17/10 , B62D11/10 , B62D11/18 , F16H48/10 , F16H48/38
摘要： PROBLEM TO BE SOLVED: To realize a constitution extending driving force from an engine in the same direction while avoiding interference of running and steering transmitting system, also to reverse the output of an HST, so that turn running similar to ordinary handle operation can be obtained, while intending low cost by simplifying the steering transmitting system. SOLUTION: In this constitution, a drive input shaft of a running and steering transmitting system from an engine is extended in the same direction, power is transmitted to a planet gear type differential gear 13 from the running transmitting system after through a forward/reverse clutch, and steering is performed by giving a rotational speed to a right/left planet gear through an HST device 120 from the steering transmitting system. A case storing the HST device 120 is obliquely arranged. And this constitution is formed such that a rear part of a crawler frame 2 is fixedly provided in a rear end part of a transmission case 5, a front part of the crawler frame 2 is fixedly provided in a front end part of the transmission case 5.

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