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公开(公告)号：JP2003095116A
公开(公告)日：2003-04-03
申请号：JP2001284988
申请日：2001-09-19
Applicant: KUBOTA KK
Inventor： NAKADA MASAYOSHI , YONEDA YUTAKA
Abstract: PROBLEM TO BE SOLVED: To provide an operating part structure enabling an operation lever 42 to be easily rotated in the lateral direction of a machine even when a hand is supportedly put on a support member 60. SOLUTION: The operation lever 42 is mounted so as to be swung in the lateral direction of the machine around the axis thereof in the forward- downwardly tilted state. Thus, as the operation lever 42 is swung from a neutral position n sideways, a grip part 42a is moved toward this side.
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公开(公告)号：JP2002295639A
公开(公告)日：2002-10-09
申请号：JP2001099651
申请日：2001-03-30
Applicant: KUBOTA KK
Inventor： UCHI TAKAHIRO , NORITA SEIJI , HIDA SADANORI , HIRAOKA MINORU , NAKADA MASAYOSHI
IPC: B60K17/10 , F16H47/02 , F16H57/02 , F16H57/023 , F16H57/04
Abstract: PROBLEM TO BE SOLVED: To provide a transmission structure capable of reducing the size and costs of a work machine. SOLUTION: In this transmission structure for the work machine, power from an engine 7 is transmitted to a traveling device 1 via a hydrostatic continuously variable transmission device 9 and a traveling transmission system 11 built in a transmission case 8; a recess part 29 recessed inward is formed on a sidewall 28 in the transmission case 8, and a piston pump 30 and a piston motor 31 are housed in the recess part 29. When a port block 34, in which oil passages 32 and 33 connecting the piston pump 30 and the piston motor 31 together are formed, is connected to the sidewall 28 to close the recess part 29, the port block 34 is positioned at the outside of the transmission case 8, while the hydrostatic continuously variable transmission device 9 is inserted into the inside of the transmission case 9.
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公开(公告)号：JP2002295638A
公开(公告)日：2002-10-09
申请号：JP2001099650
申请日：2001-03-30
Applicant: KUBOTA KK
Inventor： UCHI TAKAHIRO , NORITA SEIJI , HIDA SADANORI , HIRAOKA MINORU , NAKADA MASAYOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a transmission structure capable of reducing the size and costs of a work machine. SOLUTION: A recess part 29 is formed on a sidewall 28 in a transmission case 8, and a piston pump 30 and a piston motor 31 are housed in the recess part 29; and by having a port block 34, in which oil passages 32 and 33 connecting the piston pump 30 and the piston motor 31 together are formed, is connected to the sidewall 28 close the recess part 29, a hydrostatic continuously variable transmission device 9 is inserted into the inside of the transmission case 8. A hydraulic pump 21 arranged in the transmission case 8 is connected via a pressure reducing valve 44 to the hydrostatic continuously variable transmission device 9, to be used for charging it and is connected to an oil pressure circuit in a steering device 13 via a relief valve 23; and set pressure of the relief valve 23 is set to be higher than that of the pressure reducing valve 44, and returned oil of the relief valve 23 is supplied to the hydrostatic continuously variable transmission device 9 so as to be used as cooling oil.
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公开(公告)号：JP2002295637A
公开(公告)日：2002-10-09
申请号：JP2001099649
申请日：2001-03-30
Applicant: KUBOTA KK
Inventor： UCHI TAKAHIRO , NORITA SEIJI , HIDA SADANORI , HIRAOKA MINORU , NAKADA MASAYOSHI
IPC: A01D69/06 , F16H47/02 , F16H57/028 , F16H57/029 , F16H57/03 , F16H57/04 , F16H57/02
Abstract: PROBLEM TO BE SOLVED: To provide a transmission structure capable of reducing the size and costs of a work machine. SOLUTION: In this transmission structure for the work machine, engine power is transmitted to a traveling device 1 via a hydrostatic continuously variable transmission device 9 and a traveling transmission system 11 built in a transmission case 8. A recess part 29 is formed on a sidewall 28 in the transmission case 8, and a piston pump 30 and a piston motor 31 are housed in the recess part 29; and by having a port block 34, in which oil passages 32 and 33 connecting the piston pump 30 and the piston motor 31 together are formed, is connected to the sidewall 28 close the recess part 29, the hydrostatic continuously variable transmission device 9 is inserted into the inside of the transmission case 9. In the transmission case 8, a partition wall 60, defining a reservoir part 59 for storing transmission oil churned up by a transmission gear 58 arranged in the lower part of the transmission case 8 in the vicinity of the bottom part of the transmission case 8 is installed, and the transmission oil in the reservoir part 9 is supplied to the hydrostatic continuously variable transmission device 9.
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公开(公告)号：JP2001278093A
公开(公告)日：2001-10-10
申请号：JP2000095546
申请日：2000-03-30
Applicant: KUBOTA KK
Inventor： NAKADA MASAYOSHI
Abstract: PROBLEM TO BE SOLVED: To eliminate a shock due to side clutch operation without remarkable increase in cost by devising the structure of a transmission device. SOLUTION: In a combine in which right and left running transmission systems are respectively provided with a side clutch brake 5, and a steering lever and the side clutch brake 5 are linked so that a side clutch 5A is disconnected by the first stage operation of the steering lever, and with the side clutch 5A still disconnected, the side brake 5B is operated by the operation over the first stage, a temporary transmission means C is provided for transmitting the power of the transmission system on the side provided with the other side clutch 5A to a crawler 4 on the side provided with one side clutch 5A to freely slip with the action of load more than designated with the appearance of single- sided driving state where one side clutch 5A is disconnected and the other side clutch 5A is connected.
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Patent Agency Ranking
公开(公告)号：JP2000186759A
公开(公告)日：2000-07-04
申请号：JP36419098
申请日：1998-12-22
Applicant: KUBOTA KK
Inventor： NAKADA MASAYOSHI
Abstract: PROBLEM TO BE SOLVED: To restrain the width in shaft center direction of a transmission device to a practical width, and simultaneously to enable multi-step speed change. SOLUTION: Multiple transmissions changing speed in multi steps by alternatively engaging a hydraulic clutch C interposed in each of multiple transmission paths respectively having different transmission ratios to make one of the transmission paths into transmission state are serially interposed in a transmission system to a crawler travel device. A control valve 39 controls associatively one of the hydraulic clutches C of the speed change devices based on the operation of a speed change operation tool 36. The first time period required for engaging the hydraulic clutch C of one transmission caused by the action of the control valve 39 is set to longer than the second time period required for engaging the hydraulic clutches C of the remaining transmissions caused by the action of the control valve 39.
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公开(公告)号：JP2000179658A
公开(公告)日：2000-06-27
申请号：JP35246898
申请日：1998-12-11
Applicant: KUBOTA KK
Inventor： NAKADA MASAYOSHI
IPC: F16H57/04
Abstract: PROBLEM TO BE SOLVED: To improve sealing performance without causing inconvenience such as complication of parts maintenance and assembly, the increase of manufacturing cost and the increase of weight caused by a large increase in the number of part items such as fitting bolts by making rational improvement. SOLUTION: In this hydraulic piping structure for a working vehicle with a plurality of hydraulically operated multiple disk shift clutches C mounted in a transmission case to selectively transmission-connect plural stages of constant-mesh gears G, a piping plate 66 is mounted on a side wall 14A of the transmission case 14, and a shift operating high pressure oil passage (ra) is formed on the center part side of the piping plate 66, while a low pressure oil passage (rd) communicated with the transmission case 14 in such a way as to enclose the high pressure oil passage (ra) is formed on the peripheral part side of the piping plate 66.
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公开(公告)号：JPH11342755A
公开(公告)日：1999-12-14
申请号：JP15283798
申请日：1998-06-02
Applicant: KUBOTA KK
Inventor： NAKADA MASAYOSHI
Abstract: PROBLEM TO BE SOLVED: To set a transmission ratio of each shift position smoothly over both low and high speed sides, in a farm working vehicle equipped with both first and second stepped transmissions having a plurality of shift position for traveling use. SOLUTION: This travel transmission struture is operated for gear shifting through both first and second transmissions 3 and 4. In this case, each shift position of these first and second transmissions 3 and 4 is set up so as to make a transmission ratio, where the second transmission 4, is in a shift position at the higher speed side than the specified shift position and the first transmission 3 is in the specified shift position, so as to be situated in an interval between the transmission ratio, where the second transmission 4, is in the specified shift position and the first transmission 3 is also in the specified shift position, and another transmission ratio where the second transmission 4 is in the specified shift position and the first transmission 3 is in the shift position at the higher speed side than the specified shift position.
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公开(公告)号：JPH11165556A
公开(公告)日：1999-06-22
申请号：JP32978197
申请日：1997-12-01
Applicant: KUBOTA KK
Inventor： NAKADA MASAYOSHI , MOTOMURA MINEYOSHI
IPC: B60K23/02
Abstract: PROBLEM TO BE SOLVED: To prevent vibration of a running clutch pedal and a machine body frame caused by engine vibration. SOLUTION: In order to disconnection-operate a belt tension type running clutch 14 according to step-in action of a clutch pedal 6 against energizing force, the running clutch pedal 6 and a tension arm 14D of the running clutch 14 are associated through a link mechanism 80. A pin hole 83 positioned in a pin association part between the running clutch pedal 6 and the link mechanism 80 is formed in an oblong hole permitting independent swivel in a preset range of the tension arm 14D in a condition that a pin 81 is positioned in the center of a lengthwise direction of the pin hole to place the running clutch pedal 6 in a position starting a step-in, and a pedal hold means is provided, which holds the running clutch pedal 6 in a step-in starting position in a condition permitting step-in action of the running clutch pedal 6.
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公开(公告)号：JPH11155356A
公开(公告)日：1999-06-15
申请号：JP33265297
申请日：1997-12-03
Applicant: KUBOTA KK
Inventor： SAKATSUJI TAKAO , NAKADA MASAYOSHI , MINAMI TERUO , UEDA SUEZO
IPC: A01F12/50
Abstract: PROBLEM TO BE SOLVED: To provide a bag supporting structure capable of suitably changing the posture of bag supporting rods according to operating conditions, etc., and changing the posture into a compact one with slight fear of contact with other materials by installing the bag supporting rods near a grain discharging port and composing the bag supporting rods so that the posture can be changed. SOLUTION: This bag supporting structure is obtained by installing bag supporting rods 13 for hanging down and supporting the left and right sites of a grain recovering bag 18 near a grain discharging port of an unloader device for discharging grains from a grain tank and composing the bag supporting rods 13 so that the posture can be changed by rotation thereof around a shaft center in the vertical directions. In the structure, the bag supporting rods 13 are composed of a pair of supporting bars and each of the pair of the supporting bars can separately be composed so that the posture can be changed by the rotation thereof around the shaft center in the vertical direction.
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