JP2007222087A - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transplanter equipped with a ground working implement for farm and regulated in the high-speed drive of the ground working implement. <P>SOLUTION: The transplanter is such that the transmission 28 of this transplanter comprising a traveling machine body 1 and a planting implement 7 is so constructed that the driving force to the drive shaft of the ground working implement 17 functioning to output driving force to the ground working implement 17 for farm is drawn in coordination with low-speed driving transmission gears 43 and 61 sides functioning to transmit low-speed driving force for the traveling in planting work at a gear-type traveling variable-speed unit for varying speed in tiers for the traveling driving force. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a transplanter including a ground work machine that performs work on a farm field.

A ground work machine including a conventional travel machine body, a planting work machine connected to the travel machine body, and a ground work machine that performs work on a field, and a transmission on the travel machine body side outputs a driving force to the ground work machine A drive shaft and a gear-type traveling transmission unit that shifts the traveling driving force in a plurality of stages, and the traveling transmission unit transmits a low-speed driving force for traveling during planting work; A transplanter equipped with a high-speed drive transmission gear for transmitting a high-speed driving force for high-speed traveling that is faster than traveling during planting work is known (see, for example, Patent Document 1).
JP-A-2005-124442

  In the transplanter, the driving force transmitted to the ground working machine is the driving force after the speed change by the traveling speed change unit, so that the ground working machine changes its driving speed according to the running speed when working on the field. Even if the traveling speed of the traveling machine body changes, it is possible to work on the field under substantially the same conditions.

  However, when the traveling speed of the traveling machine is higher than the work traveling speed in the field, for example, when traveling on the road, high speed driving force exceeding the speed necessary for work on the field is applied to the ground work machine. Be transmitted.

  The ground work machine is not driven when traveling on a normal road, etc., but if the driving force is mistakenly transmitted to the ground work machine, the ground work machine may be driven at high speed and the ground work machine may be damaged. There were drawbacks.

  The transplanter of the present invention for solving the above problems includes a traveling machine body 1, a planting work machine 7 connected to the traveling machine body 1, and a ground work machine 17 that performs work on a farm field. The side transmission 28 includes a ground work machine drive shaft 56 that outputs a driving force to the ground work machine 17, and a gear-type travel transmission unit that shifts the travel drive force in a plurality of stages. Low-speed drive gears 43 and 61 for transmitting a low-speed driving force for traveling during planting work, and a high-speed drive transmission gear for transmitting a high-speed driving force for high-speed traveling higher than the traveling during planting work In the transplanter provided with 44, 62, the transmission 28 is configured to extract the driving force to the ground work machine drive shaft 56 in association with the low-speed drive transmission gears 43, 61 side in the traveling transmission unit. With the first feature To have.

  Secondly, the low-speed drive transmission gear 43 and the high-speed drive transmission gear 44 are integrally engaged with the low-speed gear 38 that outputs the driving force for low speed or the high-speed gear 39 that outputs the driving force for high speed. A ground working machine output gear 53 that constitutes the shifter gear 42 and that meshes with the low speed drive transmission gear 43 only when the low speed drive transmission gear 43 and the low speed gear 38 in the shifter gear 42 are engaged with each other is provided in the transmission 28. The driving force is transmitted to the driving shaft 56 via the ground work machine output 53 gear.

  According to the structure of the present invention configured as described above, since the ground work machine is always driven at a low speed when driven, the ground work machine is erroneously driven at a high speed and the ground work machine is damaged or mud is removed. There is an effect that inconveniences such as splashing are prevented.

  In particular, the low-speed drive transmission gear and the high-speed drive transmission gear are integrated into a low-speed gear that outputs a low-speed driving force or a shifter gear that selectively meshes with a high-speed gear that outputs a high-speed driving force. A ground work machine output gear that meshes with the low-speed drive transmission gear only when the transmission gear and the low-speed gear are meshed with each other is provided in the transmission, and the transmission is transmitted to the ground work machine drive shaft via the ground work machine output gear. Thus, the ground work machine is not driven in a state where the transplanter is traveling at high speed via the high-speed drive transmission gear. This restricts erroneous and unnecessary driving of the ground work machine when the transplanter is traveling at a high speed such as on the road.

  FIG. 1 is a side view of a riding rice transplanter that is a transplanter to which the present invention is applied. The traveling body 1 of the riding rice transplanter includes front and rear wheels 2 and 3. A driving seat 4 is provided at a position between the front wheel 2 and the rear wheel 3. A planting work machine 7 is connected to the rear of the traveling machine body 1 via a lifting link 6 so that the planting work machine 7 can be lifted and lowered.

  The frame (working machine frame) 8 of the planting work machine 7 includes a vertical frame 9 in the vertical direction and a horizontal frame 11 that is horizontally provided below the vertical frame 9 in the left-right direction. The vertical frame 9 and the horizontal frame 11 are fixed integrally.

  A seedling stand 12 is attached to the work machine frame 8 side. A plurality of planter cases 13 are attached to the side of the horizontal frame 11. A beak 14 for seedling planting is provided as a planting part in the planter case 13. Below the planter case 13, a plurality of floats 16 are provided in the left-right direction.

  In this riding rice transplanter, the planting work machine 7 is lowered so that the float 16 is in contact with the farm scene, and the beak 14 is rotated while the traveling machine body 1 is running, so that the beak 14 is placed on the seedling platform 7. Scrap the seedlings and plant them in the field. Since this rice paddy transplanter is not a simultaneous transplanting machine, seedlings will be planted in the field after scraping.

  On the planting work machine 7 side, a leveling rotor 17 is provided over substantially the entire width of the planting work machine 7 so as to be positioned between the beak 14 and the rear wheel 3 in front of the beak 14 and behind the rear wheel 3. It has been. The leveling rotor 17 is pivotally supported by a fulcrum shaft (rotor shaft) 18 so as to be rotatable.

  The rotor shaft 18 is supported on the work machine frame 8 side by a support rod 19. The support rod 19 is inserted into a pipe 21 attached to the side of the horizontal frame 11 so as to be vertically slidable. Thereby, the leveling rotor 17 can be slid up and down, and is attached so that height adjustment is possible.

  The leveling rotor 17 is a ground work machine that performs leveling work on the surface of the field from the surface of the field to the planting depth by being rotationally driven while being inserted into the field. By the leveling rotor 17, it is possible to perform leveling of a headland or the like in a field after roughing due to turning of the traveling machine body 1 during the planting operation, and plant seedlings in the field after leveling.

  As shown in the driving force transmission diagram of FIG. 2, the driving force of the engine 22 mounted on the traveling machine body 1 is a hydraulic continuously variable transmission (HST) provided on the traveling machine body 1 side via a belt 23. 24 is input.

  A driving force is transmitted from the output shaft 26 of the HST 24 via the main clutch 27 to the branch transmission shaft 29 of the transmission 28 on the traveling machine body 1 side. A planting output gear 31 that outputs a driving force for the planting work machine 7 and a traveling output gear 32 that outputs a driving force for traveling are integrally attached to the branch transmission shaft 29.

  The planting output gear 31 meshes with the gear of the inter-shaft transmission mechanism 33, and transmits a driving force to the inter-shaft transmission mechanism. The inter-stock transmission mechanism shifts the transmitted driving force and transmits it to the work machine drive shaft 34. A driving force from the work machine drive shaft 34 to the planting work machine 7 is output.

  The travel output gear 32 meshes with a sub-transmission input gear 37 that is supported by the sub-transmission input shaft 36 of the transmission 28. A driving force is transmitted from the travel output gear 32 to the auxiliary transmission input shaft 36 via the auxiliary transmission input gear 37.

  The auxiliary transmission input shaft 36 includes a low-speed gear 38 for outputting a low-speed driving force for work traveling at the time of planting work in a field, and a high-speed drive used for high-speed traveling higher than the work traveling, for example, road traveling. A high speed gear 39 for outputting force is attached so as to rotate integrally.

  The transmission 28 is provided with an auxiliary transmission output shaft 41 on the downstream side of the auxiliary transmission input shaft 36. A shifter gear 42 that selectively meshes with the low-speed gear 38 or the high-speed gear 39 to extract the driving force is slidably supported on the auxiliary transmission output shaft 41.

  The shifter gear 42 includes a low-speed drive transmission gear 43 that meshes with the low-speed gear 38 and a high-speed drive transmission gear 44 that meshes with the high-speed gear 39. By engaging the low speed gear 38 and the low speed drive transmission gear 43, a low speed drive force is transmitted to the auxiliary transmission output shaft 41. By engaging the high speed gear 39 and the high speed drive transmission gear 44, a high speed driving force is transmitted to the auxiliary transmission output shaft 41.

  The sub-shift input shaft 36, the low-speed gear 38, the high-speed gear 39, the shifter gear 42 (low-speed drive transmission gear 43, the high-speed drive transmission gear 44), and the sub-transmission output shaft 41 convert the driving force that is main-shifted by the HST 24 into a high speed and a low speed 2. The sub-transmission unit that changes gears is configured as a gear-type traveling transmission unit.

  A front wheel drive output gear 46 for driving front wheels and a rear wheel drive output gear 47 for driving rear wheels are integrally attached to the auxiliary transmission output shaft 41. The front wheel drive output gear 46 meshes with a differential gear 48 for front wheels. As a result, the driving force after the main shift by the HST 24 and the sub-shift by the sub-transmission unit is transmitted from the front wheel drive output gear 46 to the differential gear 48 for the front wheels, and the front wheels 2 are driven.

  On the other hand, the rear wheel drive output gear 47 meshes with a gear 51 attached to the traveling PTO shaft 49. As a result, the driving drive force after the main shift by the HST 24 and the sub-shift by the sub-transmission unit is transmitted from the rear wheel drive output gear 47 to the travel PTO shaft 49, the rear wheel 3 is driven, and the front wheel 2 and the rear wheel 3 travel. The airframe 1 travels. The planting machine 7 is driven by the driving force after the main shift by the HST 24 regardless of the sub-shift.

  The transmission 28 is provided with a driving force extraction shaft 52 that extracts a driving force to the leveling rotor 17. A driving force extraction gear 53 is integrally attached to the driving force extraction shaft 52. The driving force take-out gear 53 is arranged such that when the low speed drive transmission gear 43 of the shifter gear 42 is engaged with the low speed gear 38, the low speed drive transmission gear 43 is engaged with the drive force take out gear 53 together with the low speed gear 38.

  By engaging the low speed drive transmission gear 43 of the shifter gear 42 with the low speed gear 38, the low speed drive force is transmitted to the auxiliary transmission output shaft 42 and the drive force extraction shaft 52. The driving force transmitted to the driving force extraction shaft 52 is transmitted to the rotor driving shaft 56 that outputs the driving force to the leveling rotor 17 via the bevel gear 54.

  The driving force after the main shift by the HST 24 and the sub-shift by the sub-transmission unit is transmitted to the rotor drive shaft 56, and is transmitted from the rotor drive shaft 56 to the gear box of the leveling rotor 17 via the transmission shaft 55, and the leveling rotor 17 rotates. Driven.

  The leveling rotor 17 is rotationally driven at a speed corresponding to the traveling speed of the traveling machine body 1 only when traveling on the field, and the rotational speed of the leveling rotor 17 is changed according to the traveling speed. For this reason, the leveling rotor 17 can level the field under substantially the same conditions at all traveling speeds during work traveling in the field.

  By the transmission system, the leveling rotor 17 is rotationally driven at a low speed capable of performing leveling work when the sub-shift is shifted to the low speed side (work travel side), and the sub shift is shifted to the high speed side when traveling on the road or the like. Then, the driving force is cut off and the rotation stops.

  This restricts unnecessary driving of the leveling rotor 17 during traveling on the road. Further, the leveling rotor 17 is always rotated at a low speed when driven, and inconveniences such as breakage of the leveling rotor 17 and jumping of mud due to erroneous driving of the leveling rotor 17 are prevented.

  In this case, since the driving force to the leveling rotor 17 is taken out from the low-speed drive transmission gear 43 that is driven to rotate at a low speed by the low-speed gear 38, the driving force is low-speed rotation at the time of taking out. There is no need to decelerate the driving force output to.

  As shown in the transmission diagram of FIG. 3, a low-speed drive transmission gear 61 having a claw 61a and a high-speed drive transmission gear 62 having a claw 62a are pivotally supported on the auxiliary transmission output shaft 41 so as to freely rotate. A claw clutch 63 that meshes with the claw 61a or 62a of either one of the gears 61 or 62 may be provided between the transmission gear 61 and the high-speed drive transmission gear 62 to constitute the auxiliary transmission unit.

  In this case, the low-speed gear 38 and the low-speed drive transmission gear 61, the high-speed gear 39 and the high-speed drive transmission gear 62, and the driving force take-out gear 53 and the low-speed drive transmission gear 61 are meshed in advance. By engaging the claw clutch 63 with the claw 61 a of the low-speed drive transmission gear 61, a low-speed driving force is transmitted to the auxiliary transmission output shaft 41, and by engaging the claw clutch 63 with the claw 62 a of the high-speed drive transmission gear 62, the auxiliary transmission output is performed. A high speed driving force is transmitted to the shaft 41.

  On the other hand, a low-speed driving force is always input to the rotor drive shaft 56 via the low-speed drive transmission gear 61. For this reason, the leveling rotor 17 is driven to rotate at a low speed while following the main shift by the HST 24 when the sub-shift is in a low-speed state, which is the same as when the sub-shift is always switched to the low-speed side.

  In this case, when the leveling rotor 17 is driven to rotate, the leveling rotor 17 is always driven to rotate at a low speed, and inconveniences such as breakage of the leveling rotor 17 and jumping of mud due to erroneous driving of the leveling rotor 17 are prevented. .

  Since the driving force to the leveling rotor 17 is taken out from the low-speed driving transmission gear 61 that is driven to rotate at a low speed by the low-speed gear 38, it is a driving force for low-speed rotation at the time of extraction, and is output for driving the leveling rotor 17. There is no need to greatly reduce the generated driving force. 3, the same reference numerals as those in FIG. 2 denote the same parts, and the description of the same functions is omitted.

It is a side view of a riding rice transplanter. It is a transmission diagram which shows the transmission state of the driving force of this riding rice transplanter. It is a transmission diagram which shows the other transmission state of the driving force of this riding rice transplanter.

Explanation of symbols

1 traveling machine body 7 planting work machine 17 leveling rotor (ground work machine)
28 Transmission 38 Low-speed gear 39 High-speed gear 42 Shifter gear 43 Low-speed drive transmission gear 44 High-speed drive transmission gear 53 Driving force take-out gear (ground work machine output gear)
56 Rotor drive shaft (ground work machine drive shaft)
61 Low-speed drive transmission gear 62 High-speed drive transmission gear

Claims (2)

  A traveling machine body (1), a planting work machine (7) connected to the traveling machine body (1), and a ground work machine (17) that performs work on a farm field, the transmission machine body (1) side transmission ( 28) includes a ground work machine drive shaft (56) that outputs a driving force to the ground work machine (17), and a gear type travel transmission unit that shifts the travel drive force in a plurality of stages, the travel transmission unit However, the low-speed drive transmission gears (43) and (61) for transmitting the low-speed driving force for traveling during planting work and the high-speed driving force for high-speed traveling higher than the traveling during planting work are transmitted. In the transplanter provided with the high-speed drive transmission gears (44) and (62) for the transmission, the transmission (28) uses the drive force to the ground work machine drive shaft (56) as the low-speed drive transmission gear in the traveling transmission unit. (43), (61) is configured to be linked and removed. Transplantation machine. The low-speed drive transmission gear (43) and the high-speed drive transmission gear (44) are integrally selected as a low-speed gear (38) that outputs a low-speed drive force or a high-speed gear (39) that outputs a high-speed drive force. A ground work machine output gear that constitutes a shift gear (42) that meshes with the low-speed drive transmission gear (43) only when the shift gear (42) is engaged with the low-speed drive transmission gear (43) and the low-speed gear (38). 2. The transplant according to claim 1, wherein (53) is provided in the transmission (28), and the transmission (28) transmits the driving force to the ground work machine drive shaft (56) via the ground work machine output (53) gear. Machine.

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