JPH10103433A - Mission device for farm working machine, and farm working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mission device which changes speeds of first output shaft and second output shaft separately and changes speed, adjusts, and outputs these first and second output shafts according to used working machine and situation. SOLUTION: The mission device consists of six components: a mission case 2, freely rotating input shaft 4 having connection 6 projecting from the mission case 2, first output shaft 10 and second output shaft 15 respectively installed on both sides of the mission case 2 in the situation where the shafts rotate freely, first rotating shaft 21 which is rotational free and parallel to the input shaft 4 and causes rotation of the first output shaft 10, second rotating shaft 28 which is rotational free and parallel to the input shaft 4 and causes rotation of the second output shaft 15, an adjustable speed change component 35 which changes and transmits rotation of the input shaft 4 to the first rotating shaft 21 and the second rotating shaft 28. The speed change component 35 contains first speed change component 36 and second speed change component 37 which changes rotational frequency of the input shaft 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mission device for a farm work machine and a farm work machine, for example, a mission device for outputting to a work machine of the various work machines in a farm work machine such as a tilling work machine, a scraping work machine, a direct sowing machine or the like. And an agricultural work machine provided with the mission device.

[0002]

2. Description of the Related Art Conventionally, as a mission device used for this kind of agricultural working machine, for example, as described in Japanese Utility Model Publication No. 6-39531, a mission case is rotated by an output from a PTO shaft of a tractor. An input shaft is rotatably provided, and first and second
The output shaft and the second output shaft are provided so as to be rotatable and movable in the axial direction, respectively, and the inner end of the second output shaft is spline-fitted inside the inner end of the first output shaft. And
A bevel gear attached to the inner end of the input shaft meshes with a bevel gear attached to a spline shaft portion of the first output shaft, and the first output shaft is connected to one of left and right working machines. There is known a configuration in which a rotary cultivator of a working machine is rotatably linked to the second output shaft, and a rotary cultivator of the other working machine is rotatably linked to the second output shaft.

[0003]

In the configuration described in the above publication, the first output shaft and the second output shaft are spline-fitted to form a single coaxial body. The output shaft and the second output shaft are integrally rotated at the same speed via a bevel gear on the input shaft.
The working body rotated by the output from the output shaft and the working body rotated by the output from the second output shaft are preferably those that perform the same kind of work as the rotary tilling body described in the above publication, In work equipment that performs different types of work rotated by outputs from the first output shaft and the second output shaft, the speed of the first output shaft or the second output shaft is adjusted according to the work equipment. There is an inconvenience that cannot be done.

In addition, when the outputs from the first output shaft and the second output shaft are transmitted to the respective working devices via a variable output relay device, the center of gravity is entirely controlled by the output relay device. There is a problem in that the output relay device is likely to be easily shifted or mechanically restricted from being incorporated into the output relay device, and the speed of the output relay device cannot be easily adjusted to a speed corresponding to the work device.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and allows the first output shaft and the second output shaft to be individually and easily gear-shifted. A transmission device capable of adjusting the speed of the output shaft and the output shaft according to the respective work equipment and according to the work status of the work equipment, and an agricultural work machine equipped with the transmission apparatus. It is assumed that.

[0006]

According to a first aspect of the present invention, there is provided a mission device for an agricultural work machine, comprising: a transmission case; an input shaft rotatably provided on the transmission case and having a connecting portion protruding from the transmission case; A first output shaft and a second output shaft rotatably provided on both sides of the case, respectively, and the first output shaft rotatably provided in the transmission case so as to be rotatable in parallel with the input shaft. A first rotating shaft, a second rotating shaft provided on the transmission case so as to be rotatable in parallel with the input shaft, for driving the second output shaft to rotate, and rotating the input shaft by the first rotation. Speed-change transmission means for shifting the speed and transmitting the speed to the shaft and the second rotating shaft.

Then, when the input shaft is rotated,
The rotation of the input shaft is speed-changed by the speed change transmission means and transmitted to the first rotation shaft and the second rotation shaft, respectively, and the first output shaft is rotationally driven at a predetermined speed by the first rotation shaft. At the same time, the second output shaft is driven to rotate at a predetermined speed by the second rotation shaft. At this time, the first output shaft and the second output shaft are driven to rotate at the same speed or at different speeds.

The speed of the input shaft is further shifted to a predetermined speed by the speed change transmission means by adjusting the speed of the speed change transmission means as necessary, so that the speed of the input shaft is changed to the first rotation shaft and the second rotation shaft. The first output shaft and the second output shaft are transmitted respectively, and are further driven to rotate at predetermined speeds adjusted further. Also at this time, the first output shaft and the second output shaft are driven to rotate at the same speed or at different speeds, respectively, after the speed has been adjusted.

According to a second aspect of the present invention, there is provided the mission device for an agricultural work machine according to the first aspect, wherein the speed change transmission means is capable of shifting and transmitting the rotation of the input shaft to the first rotation shaft. A first speed change means, and a second speed change means capable of changing the speed of the rotation of the input shaft to the second rotation shaft for transmission.

Then, the rotation of the input shaft is shifted to a predetermined speed by the first speed change means and transmitted to the first rotation shaft, and the first output shaft is rotationally driven by the first rotation shaft. You. Further, the rotation of the input shaft is changed to a predetermined speed by the second speed change means and transmitted to the second rotation shaft, and the second output shaft is rotationally driven by the second rotation shaft. Then, the first output shaft and the second output shaft are rotationally driven at the same speed or different speeds by the first speed change means and the second speed change means.

Further, the speed of the first transmission means or the second transmission means is adjusted as required, so that the rotation of the input shaft is further shifted to a predetermined speed by the selected transmission means, and the first transmission means is shifted to the first transmission means. Is transmitted to the rotation shaft of the second rotation shaft or the second rotation shaft. Then, the first output shaft and the second output shaft are respectively driven to rotate at different speeds.

According to a third aspect of the present invention, there is provided the mission device for an agricultural work machine according to the second aspect, wherein the first transmission means includes a pair of spur gears having different rotation speeds meshed with each other. One of the spur gears is removably mounted on one of the input shaft and the first rotary shaft, and the other spur gear is removably mounted on the other shaft. It has a pair of spur gears having different rotational speeds to be meshed, and one spur gear is attached to and detached from the input shaft and the second rotation shaft, and the other spur gear is attached to and detached from the other shaft. It is attached to the shaft so that it can be exchanged.

In the first speed change means, the rotation of the input shaft is shifted to a predetermined speed by a pair of spur gears having different rotation speeds meshed with each other and transmitted to the first rotation shaft. In addition, the pair of spur gears are exchanged with each other and are attached to the input shaft and the first rotating shaft, respectively, so that the rotation of the input shaft is further shifted to a predetermined speed by the pair of spur gears and the first rotation is performed. Transmitted to the shaft.

In the second transmission means, the rotation of the input shaft is shifted to a predetermined speed by a pair of spur gears having different rotation speeds meshed with each other and transmitted to the second rotation shaft. Further, the pair of spur gears are exchanged with each other, and the pair of spur gears are respectively mounted on the input shaft and the second rotating shaft. Transmitted to the shaft.

According to a fourth aspect of the present invention, there is provided a transmission device for an agricultural work machine according to the third aspect, wherein the transmission device comprises a pair of spur gears of one of the first transmission means and the second transmission means. The first rotating shaft and the second rotating shaft are shifted to different speeds.

[0016] Then, the first output shaft and the second output shaft are rotated at different speeds by the pair of spur gears of the selected one of the transmission means at the first rotation shaft and the second rotation shaft, respectively. Driven.

According to a fifth aspect of the present invention, there is provided an agricultural work machine comprising: a mission device according to any one of the first to fourth aspects; a first working device rotated by an output from a first output shaft of the mission device; A second working device rotated by an output from a second output shaft of the mission device.

Then, the first work equipment is rotated by the output from the first output shaft, and the second work equipment is rotated by the output from the second output shaft. Is performed, and the desired agricultural work is performed by the second work device. At this time, the first output shaft outputs at a speed corresponding to the first working device, and the second output shaft outputs at a speed corresponding to the second working device. And sufficient agricultural work is performed. Therefore, the first work equipment and the second work equipment perform the related agricultural work in one stroke continuously.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a mission device. The mission device 1 has a mission case 2, and the mission case 2 is positioned at an intermediate portion and is positioned in front and rear by a bearing body 3 arranged in the front-rear direction. An input shaft 4 is rotatably supported. The input shaft 4 has a connecting portion 6 formed at a front end portion thereof and protruding forward from the transmission case 2 and having a plurality of axial splines 5 formed on a peripheral side thereof. , A spline shaft portion 8 having a large number of axial splines 7 formed on a peripheral side portion.

The transmission case 2 is provided on both sides with inner ends of hollow pipes 9 extending in the left-right direction in a liquid-tight manner.
Of the first output shaft 10 is rotatably inserted.
The spline shaft 11 at the inner end of the transmission case 2
It is projected into. Further, the cylindrical portion 13 of the bevel gear 12 is spline-fitted integrally with the spline shaft portion 11,
This cylindrical portion 13 is a bearing body provided in the transmission case 2.
It is rotatably supported at 14.

The second pipe body 9 has a second
Of the second output shaft 15 is rotatably inserted.
The spline shaft 16 at the inner end of the transmission case 2
It is projected into. Further, the cylindrical portion 18 of the bevel gear 17 is spline-fitted integrally with the spline shaft portion 16,
The cylindrical portion 18 is a bearing member provided on the transmission case 2.
At 19, it is rotatably supported.

Further, bearing bodies 20 are provided in the transmission case 2 on the side of the first output shaft 10 at the front and rear sides, and the input shaft 4 is positioned in the front and rear bearing bodies 20. A first rotation shaft 21 in the front-rear direction for driving the first output shaft 10 to rotate in parallel with the first rotation shaft 21 is rotatably supported.

The first rotary shaft 21 has a spline shaft portion 22 at the front end, and a bevel gear 23
The cylindrical portions 24 are integrally spline-fitted,
Is rotatably supported by the bearing body 20 at the front end. The bevel gear 23 of the first rotating shaft 21 is meshed with the bevel gear 12 of the first output shaft 10. Further, the first rotary shaft 21 has a spline shaft portion 26 having a large number of axial splines 25 formed on a peripheral side portion at a rear end portion.

Further, a front and rear bearing 27 is provided in the transmission case 2 on the side of the second output shaft 15, and the input shaft 4 is positioned with the front and rear bearings 27. A second rotation shaft 28 in the front-rear direction for rotating and driving the second output shaft 15 is rotatably supported in parallel.

The second rotary shaft 28 has a spline shaft 29 at a front end thereof, and a bevel gear 30
Of the cylindrical portion 31 is integrally spline-fitted.
Is rotatably supported by a bearing body 27 at the front end. The bevel gear 30 of the second rotating shaft 28 is meshed with the bevel gear 17 of the second output shaft 15.

The second rotating shaft 28 has a spline shaft portion 33 having a plurality of axial splines 32 formed on a peripheral side portion at a rear end portion, and is located at a front side of the rear bearing body 27. A spline shaft portion 34 is provided at a substantially intermediate portion.

Next, in the transmission case 2, there is provided a shift transmission means 35 capable of changing the speed of the rotation of the input shaft 4 and transmitting the rotation of the input shaft 4 to the first rotation shaft 21 and the second rotation shaft 28, respectively. Is provided. The shift transmission means 35 includes a shift-adjustable first transmission means 36 for shifting the rotation of the input shaft 4 to the first rotating shaft 21 and transmitting the rotation.
And a second speed change means 37 that can change the speed of the rotation of the second rotation shaft 28 and transmit the rotation to the second rotation shaft 28.

The first transmission means 36 has a pair of spur gears 38, 39 meshed with each other and having different rotational speeds, and one of the large diameter spur gears 38 is a spline shaft of the input shaft 4. The other small-diameter spur gear 39 is detachably spline-fitted to the spline shaft portion 26 of the first rotating shaft 21. The large-diameter spur gear 38 is detachably spline-fitted to the spline shaft 26 of the first rotating shaft 21, and the small-diameter spur gear 39 is detachably mounted to the spline shaft 8 of the input shaft 4. Is spline-fitted.

That is, the pair of spur gears 38 and 39 meshing with each other and having different rotational speeds can be detachably exchanged with the spline shaft 8 of the input shaft 4 and the spline shaft 26 of the first rotary shaft 21. Is spline-fitted. The rotation of the input shaft 4 is controlled by the first rotation shaft 21.
The speed is adjusted and transmitted.

The second speed change means 37 has a pair of spur gears 40 and 41 meshed with each other and having different rotational speeds.
One of the small-diameter spur gears 40 is detachably spline-fitted to the spline shaft portion 8 of the input shaft 4, and the other large-diameter spur gear 41 is a spline shaft portion 33 of the second rotary shaft 28.
And is spline-fitted to be detachable. The small-diameter spur gear 40 is connected to a spline shaft portion 33 of the second rotating shaft 28.
The spline gear 41 is detachably attached to
Is adapted to be removably spline-fitted to the spline shaft portion 8 of the input shaft 4.

That is, the pair of spur gears 40 and 41 meshing with each other and having different rotation speeds are detachably attached to the spline shaft 8 of the input shaft 4 and the spline shaft 33 of the second rotation shaft 28. It is designed to be freely spline-fitted. Then, the rotation of the input shaft 4 is transmitted to the second rotation shaft.
The transmission is adjusted to 28 and transmitted.

Next, the spline shaft portion 8 of the input shaft 4, the spline shaft portion 26 of the first rotary shaft 21, and the spline shaft portion 33 of the second rotary shaft 28 have respective spur gears.
After spline fitting of 38, 39, 40, 41, a cylindrical collar 42 for positioning these spur gears 38, 39, 40, 41 is removably fitted.

A cover 43 that opens and closes when the shift transmission means 35 is adjusted in speed is attached to the rear side of the transmission case 2 so as to be openable and closable. When the cover body 43 is closed, the cover body 43 is detachably fastened with a plurality of bolts 44, but when the cover body 43 is closed and fastened with the plurality of bolts 44, The cover body 43 and the transmission case 2 are hermetically sealed in a liquid-tight manner so that the entire transmission case 2 is sealed so that lubricating oil does not leak.

Next, at the outer ends of the left and right pipe bodies 9 fixed to both sides of the transmission case 2, a vertically-oriented transmission case 45 and a bracket (not shown) disposed opposite to each other. Each transmission case 45
A rotary tilling body 46 as a first working device is rotatably mounted between the lower ends of the bracket and the bracket.

The rotary tilling body 46 has a tilling shaft 47 rotatably mounted between the lower end portions of the transmission case 45 and the bracket, and a radially spaced radially spaced apart from the tilling shaft 47 in the tilling shaft 47. It has a large number of tilling claws 48 projecting therefrom.
In addition, one end of the tilling shaft 47 protrudes into the lower end of the transmission case 45, and the outer end of the first output shaft 10 rotatably projects into the upper end of the transmission case 45.
One end of the cultivation shaft 47 is connected to the outer end of the output shaft 10
Linked via 49.

A cover 46a covering the upper part of the rotary tilling body 46 is integrally fixed between the transmission case 45 and the bracket, and the rear end of the cover 46a is fixed to the rotary tilling body 46. Leveling plate 46b located behind
Are rotatably supported in the vertical direction.

A front and rear bracket 50a and a transmission case 50b extending rearward are opposed to the outer ends of the left and right pipe bodies 9, respectively, and are integrally fixed to each other. Between the rear end portion of the rotary tilling body 46 and the rear end portion of the rotary tilling body 46, a ground adjusting roller 51 serving as a second working device is provided.
Are rotatably mounted on a roller support shaft 52 which is integral with the shaft.

One end of a roller support shaft 52 of the leveling roller 51 protrudes into a rear end of the transmission case 50b, and a front end of the transmission case 50b has an outer end of the second output shaft 15. Is rotatably protruded, and one end of the roller support shaft 52 is interlockedly connected to the outer end of the second output shaft 15 via an interlocking medium 53.

Further, connecting arms 54 are integrally provided on both sides of the left and right pipe bodies 9 to project forward and downward, respectively, and an upper connecting arm 55 is integrally provided on the transmission case 2 to project forward and upward. Have been. The upper connecting arms 55 are supported on the connecting arms 54 on both sides by stays (not shown).

In the drawing, reference numeral 56 denotes a plurality of rotatable disk openers which are located between the grading plate 46b and the grading roller 51 and are arranged side by side at predetermined intervals in the left-right direction. A plurality of hoppers 60 disposed and supported above the disk opener 56 and having a fertilizer storage chamber 58 and a seed storage chamber 59 are provided in front of each of the disk openers 56, communicating with the fertilizer storage chamber 58. The fertilizer conduit 61 is a seed conduit that is communicated with the seed storage chamber 59 and is provided at the rear of each of the disc openers 56.

A farming machine A for direct sowing comprising the mission device 1, the rotary tilling body 46, the terrain roller 51, a plurality of disc openers 56, a plurality of hoppers 57 provided with a fertilizer conduit 60 and a seed conduit 61 is constituted. Have been.

Next, the operation of the above embodiment will be described.

Transmission means 35 according to the working conditions of the field
For example, as shown in FIG. 1, the spline shaft portion 8 of the input shaft 4 is provided with a large diameter spur gear 38 of the first transmission means 36 and a small diameter spur gear 40 of the second transmission means 37, respectively. The small-diameter spur gear 39 of the first transmission means 36 is spline-fitted to the spline shaft portion 26 of the first rotary shaft 21 in a state of being meshed with the large-diameter spur gear 38. The large-diameter spur gear 41 of the second transmission means 37 is spline-fitted to the spline shaft portion 33 of the rotary shaft 28 while meshing with the small-diameter spur gear 40.

When the input shaft 4 is rotated, the speed of the rotation of the input shaft 4 is increased by the first transmission means 36 and transmitted to the first rotating shaft 21. Is set to rotate at a high speed, and the rotation of the input shaft 4 is reduced by the second transmission means 37 and transmitted to the second rotation shaft 28, and the second rotation shaft 28 It is set so as to be rotated at a speed lower than one rotation shaft 21.

Further, the spline shaft portion 8 of the input shaft 4, the first
The collar 42 is fitted to the spline shaft portion 26 of the rotating shaft 21 and the spline shaft portion 33 of the second rotating shaft 28, and the spur gears 38, 39, 40,
The cover 43 is attached to the transmission case 2 with a plurality of bolts 44 with the 41 positioned.

Next, the distal end portions of the left and right connecting arms 54 and the upper connecting arm 55 of the agricultural work machine A are connected to the three-point connecting portion of the tractor.
Of the input shaft 4 are connected to the PTO shaft of the tractor via a power transmission shaft by spline fitting.

Then, the agricultural work machine A is towed by the tractor, and the input shaft 4 is rotated by the PTO shaft of the tractor via the power transmission shaft, so that the rotation of the input shaft 4 becomes the first. The speed is increased by the speed change means 36 and transmitted to the first rotating shaft 21. The first rotating shaft 21 is rotated at a high speed, and the bevel gear of the first rotating shaft 21 is rotated.
At 23, the first output shaft 10 is rotationally driven via the bevel gear 12 meshed with the bevel gear 23.

When the input shaft 4 is rotated,
The rotation of the input shaft 4 is reduced by the second transmission means 37 and transmitted to the second rotating shaft 28, and the second rotating shaft 28
The second output shaft 15 is rotated by the bevel gear 30 of the second rotary shaft 28 via the bevel gear 17 meshed with the bevel gear 30 while the second output shaft 15 is rotated at a speed lower than that of the rotary shaft 21.

When the first output shaft 10 is driven to rotate, the rotary tilling body 46 is rotated by the first output shaft 10 via the interlocking medium in the transmission case 45, and the rotary tilling body is rotated. The soil in the field is progressed while being sequentially tilled by a large number of tilling claws 48 of 46, and these tilling soils are
The land is leveled sequentially at b.

At this time, since the first rotating shaft 21 is rotated at a speed higher than the rotation of the input shaft 4, the rotation from the first rotating shaft 21 and the output from the first output shaft 10 is driven. The rotary till 46 is rotated at a high speed.
Therefore, it is preferable when the soil in the field is wet soil (wet paddy), and the soil hardly adheres to each of the tilling claws 48, and the soil breaking efficiency is improved.

The rotary tilling body 46 is rotated and driven to advance, and a plurality of disc openers 56 are rotated. Each of the disc openers 56 has a predetermined width on the ground leveled by the ground leveling plate 46b. While a substantially V-shaped direct sowing groove is sequentially formed at a depth, the fertilizer storage chamber of each hopper 57 is formed.
The feeding mechanism provided at the bottom of the 58 and the feeding mechanism provided at the bottom of the seed storage chamber 59 are activated, and the fertilizer is sequentially fed from the fertilizer storage chamber 58 and the seed is sequentially fed from the seed storage chamber 59 in each of the feeding mechanisms. It is paid out.

The fertilizer in each fertilizer accommodating chamber 58 is sequentially sprayed from each fertilizer conduit 60 disposed on the front side of each disk opener 56 to each direct sowing groove, and the fertilizer in the rear side of each disk opener 56 is spread. The seeds in the various child accommodation rooms 59 are sequentially sown from the various child conduits 61 provided.

Further, when the second output shaft 15 is rotationally driven, the leveling roller 51 rotates at a rotational speed higher than the traveling speed on the second output shaft 15 via the interlocking medium in the transmission case 50b. At the same time, the leveling roller 51 is slip-rotated with respect to each of the direct sowing grooves and the leveling ground, and each of the direct sowing grooves is closed by the leveling roller 51, and is leveled without impairing the germination of seeds. . And the various children in each direct sowing ditch are not affected by birds.

Next, the speed of the second speed change means 37 of the speed change transmission means 35 is adjusted according to the work situation in the field, for example, as shown in FIG. That is, the small-diameter spur gear 40 of the second transmission means 37 is detached from the spline shaft part 8 of the input shaft 4 and spline-fitted to the spline shaft part 33 of the second rotary shaft 28, and the second transmission means 37 The large-diameter spur gear 41 is detached from the spline shaft portion 33 of the second rotating shaft 28 and spline-fitted to the spline shaft portion 8 of the input shaft 4.

When the input shaft 4 is rotated, the speed of the rotation of the input shaft 4 is increased by the second transmission means 37 and transmitted to the second rotary shaft 28, and the second rotary shaft 28 is rotated. Is set to rotate at a high speed. That is, the second rotating shaft 28 in the case shown in FIG. 2 is set to be rotated at a higher speed than in the case shown in FIG.

The second output shaft 15 is connected to the second rotating shaft 28.
Is driven to rotate at the second output shaft 15 via the interlocking medium in the transmission case 50b at a rotation speed higher than the traveling speed, and the ground adjustment roller 51 Slip rotation is further strongly performed with respect to the direct sowing groove and the leveling ground, and the direct sowing groove is more reliably closed by the leveling roller 51, and the ground is leveled without impairing the germination of seeds.

Next, the speed of the first speed change means 36 of the speed change transmission means 35 is adjusted according to the work situation in the field, for example, as shown in FIG. That is, the large-diameter spur gear 38 of the first transmission means 36 is detached from the spline shaft portion 8 of the input shaft 4 and spline-fitted to the spline shaft portion 26 of the first rotating shaft 21, and the first transmission means 36 The spur gear 39 having a small diameter removes the spline shaft portion 26 of the first rotating shaft 21 and spline-fits the spline shaft portion 8 of the input shaft 4.

When the input shaft 4 is rotated, the rotation of the input shaft 4 is reduced by the first speed change means 36 and transmitted to the first rotary shaft 21. It is set to rotate at a slow speed. That is, the first rotating shaft 21 in the case shown in FIG. 3 is set to rotate at a lower speed than that in the case shown in FIG.

Also, the first output shaft 10 is
Is driven to rotate by the first output shaft 10 via the interlocking medium in the transmission case 45.
Is rotated, and a large number of tilling claws 48 of the rotary tilling body 46 are rotated.
The soil in the field is progressed while being plowed sequentially.

At this time, since the first rotating shaft 21 is rotated at a lower speed than the rotation of the input shaft 4, the rotation from the first rotating shaft 21 and the output from the first output shaft 10 is driven. The rotary tilling body 46 is rotated at a lower speed than in the case shown in FIG. Therefore, it is preferable when the soil in the field is dry soil (dry field), and the soil is less likely to adhere to each tilling nail 48,
The soil is crushed as a relatively large mass, and the crushing efficiency is improved.

As described above, when the input shaft 4 is rotated, the rotation of the input shaft 4 is shifted by the transmission means 35 and transmitted to the first rotating shaft 21 and the second rotating shaft 28, respectively. The first output shaft 10 is driven to rotate at a predetermined speed by the first rotation shaft 21, and the second output shaft 10 is rotated by the second rotation shaft 28.
Is driven to rotate at a predetermined speed. At this time, the first output shaft 10 and the second output shaft 15 are driven to rotate at the same speed or at different speeds.

Further, if necessary, the first
In the transmission means 36 and the second transmission means 37, a pair of large-diameter spur gears 38 and a small-diameter spur gear 39 meshing with each other and a pair of large-diameter spur gears 41 and a small-diameter spur gear meshing with each other
The first and second rotation shafts 40 and 40 are spline-fitted around the input shaft 4 to the first rotation shaft 21 and the second rotation shaft 28 to adjust the speed of each. 4 is further shifted to a predetermined speed and transmitted to the first rotation shaft 21 and the second rotation shaft 28, respectively, and the first output shaft 10 and the second output shaft 15 are further shifted and adjusted to a predetermined speed. Are respectively driven to rotate at a speed of. Also in this case, the first output shaft
The output shaft 10 and the second output shaft 15 are driven to rotate at the same speed or at different speeds, respectively, whose speed is adjusted.

Next, in the above-described embodiment, the case where the bevel gear 30 meshing with the bevel gear 17 of the second output shaft 15 is spline-fitted to the spline shaft portion 29 at the front end of the second rotary shaft 28 is described. However, the present invention is not limited to this, and the bevel gear 30 of the second rotating shaft 28 may be spline-fitted to a spline shaft 34 formed at a substantially intermediate portion of the second rotating shaft 28.

With such a configuration, the bevel gear 30 spline-fitted to a substantially intermediate portion of the second rotary shaft 28
Then, the second output shaft 15 is rotationally driven in the opposite direction to that of the above-described embodiment via the bevel gear 17 meshed with the bevel gear 30. Then, the output from the second output shaft 15 rotates the leveling roller 51 in the direction opposite to that in the embodiment.

[0066]

According to the first aspect of the present invention, there is provided a speed-change-adjustable transmission means for shifting and transmitting the rotation of the input shaft to the first rotation shaft and the second rotation shaft, respectively. The rotation of the input shaft is transmitted to the first rotation shaft and the second rotation shaft by the speed change transmission means.
The transmission of the input shaft can be more reliably shifted to the first rotation shaft and the second rotation shaft by adjusting the speed of the transmission transmission means. And can therefore be communicated,
The first output shaft and the second output shaft can reliably drive the first output shaft and the second output shaft at the same speed or different speeds with the first rotation shaft, respectively. Each work device operated by the output from the shaft and the output from the second output shaft can be sufficiently operated according to the work situation and the work device.

A first output shaft and a second output shaft are provided on both sides of the transmission case, and a first rotation shaft and a second rotation shaft are provided on both sides of the input shaft in parallel with the input shaft. The transmission case can improve the overall weight balance by these shafts.
The shift adjustment operation of the shift transmission means can be facilitated.

Further, since the transmission device is provided with a transmission device capable of adjusting the transmission in the transmission case, the transmission device having the transmission device can be made compact with good weight balance. Since the transmission means is provided, even when the agricultural machine is set on the agricultural work machine, it is possible to prevent an inconvenience such as the center of gravity of the agricultural work machine being shifted as in the case where the transmission means is separately provided in the drive system of the work machine of the farm work machine.

According to the second aspect of the invention, in addition to the effect of the first aspect, the speed change transmission means can change the speed of the input shaft to the first rotation shaft and transmit the first speed. Means, and a shiftable second speed change means for shifting and transmitting the rotation of the input shaft to the second rotation shaft, so that the rotation of the input shaft is changed to the first speed by the first speed change means. Rotate the axis to the second
The speed change means can surely change the speed and transmit it to the second rotating shaft, but by adjusting the speed of the first speed change means and the second speed change means or one of the speed change means, One of the rotating shafts can be more reliably rotated at a rotating speed relative to the other rotating shaft.

According to the third aspect of the present invention, in addition to the effect of the second aspect, the first transmission means has a pair of spur gears having different rotational speeds meshed with each other, and one of the spur gears is engaged. Is mounted on one of the input shaft and the first rotating shaft, and the other spur gear is detachably mounted on the other shaft, and the second speed change means has a rotational speed meshed with each other. A pair of spur gears, one of which is mounted on one of the input shaft and the second rotating shaft on one of the shafts, and the other of the spur gears is removably mounted on the other shaft. Therefore, a pair of spur gears having different rotation speeds, which are meshed with each other, of the first transmission means and the second transmission means or one of the transmission means, are detachably attached and exchanged, and are axially attached to each other. Can be easily rotated at the changed rotation speed,
Since the conversion of the rotation speed of the rotating shaft is simply performed by replacing the pair of spur gears, the speed of the rotating shaft can be easily adjusted.

According to the fourth aspect of the invention, in addition to the effect of the third aspect of the invention, the first rotating shaft is formed by a pair of spur gears of either the first transmission means or the second transmission means. And the second rotating shaft are shifted to different speeds. By adjusting the speed of a pair of spur gears of one of the shifting means, the rotating speed of the other rotating shaft is converted with respect to one rotating shaft. A working device operated by an output from an output shaft rotated by the other rotating shaft can be fully operated according to a work situation and a working device, and a working device operated by an output from the other output shaft Related work can be ensured.

According to the invention of claim 5, claims 1 to 4
And a first device rotated by an output from a first output shaft of the mission device.
And the second work equipment rotated by the output from the second output shaft of the mission device, so that the first work equipment is changed to the first work equipment by the output from the first output shaft. By operating the second work equipment by the output from the second output shaft, respectively, the first work equipment and the second work equipment perform combined work such as plowing work and seeding work. Therefore, it is possible to provide an agricultural work machine capable of performing agricultural work with excellent workability.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a mission device showing one embodiment of the present invention.

FIG. 2 is a cross-sectional view of the transmission device in a state where the speed change transmission means is adjusted for speed change.

FIG. 3 is a cross-sectional view of the transmission in a state where the transmission is further adjusted in transmission;

FIG. 4 is a side view of the agricultural work machine provided with the above mission device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mission device 2 Mission case 4 Input shaft 6 Connecting part 10 1st output shaft 15 2nd output shaft 21 1st rotation shaft 28 2nd rotation shaft 35 Speed change transmission means 36 1st speed change means 37 2nd Transmission means 38, 39, 40, 41 Spur gear 46 First work equipment 51 Second work equipment

Claims (5)

[Claims] 1. A transmission case, an input shaft rotatably provided on the transmission case and having a connecting portion protruding from the transmission case, and first output terminals rotatably provided on both sides of the transmission case, respectively. A shaft, a second output shaft, a first rotating shaft rotatably provided on the transmission case in parallel with the input shaft to drive the first output shaft to rotate, and a transmission shaft parallel to the input shaft. A second rotation shaft rotatably provided on the second shaft for rotating the second output shaft, and a speed change adjustment for transmitting the rotation of the input shaft to the first rotation shaft and the second rotation shaft, respectively. A transmission device for an agricultural work machine, comprising: a transmission device capable of shifting. 2. The speed change transmission means includes: a first speed change means capable of changing the speed of the rotation of an input shaft to a first rotation shaft for transmission; and a speed change transmission device for shifting the rotation of the input shaft to the second rotation shaft. The transmission device for an agricultural work machine according to claim 1, further comprising: a second speed change means capable of changing the speed of transmission. 3. The first speed change means has a pair of spur gears having different rotation speeds meshed with each other, and one of the spur gears is connected to one of an input shaft and a first rotation shaft. The other spur gear is detachably mounted on the other shaft, and the second speed change means has a pair of spur gears having different rotation speeds meshed with each other, and one of the spur gears is input. The transmission device for an agricultural work machine according to claim 2, wherein the other spur gear is detachably mounted on the other shaft on one of the shaft and the second rotation shaft. 4. The first rotation shaft and the second rotation shaft are shifted to mutually different speeds by a pair of spur gears of one of the first transmission unit and the second transmission unit. The mission device for an agricultural work machine according to claim 3, wherein 5. The mission device according to claim 1, a first working device rotated by an output from a first output shaft of the mission device, and a second working device of the mission device. A second working device rotated by an output from an output shaft.