JP2014212746A - Working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems in a working machine mounted in a tractor and conducting basic work and additional work by two or more working devices, in which torque is insufficient when driving the working devices only by ground wheel driving and slip resistance is inferior, and an increase of the number of ground-engaging wheels and a change to support wheel driving are employed for the resolution, however it is not sufficient.SOLUTION: A working machine is characterized by: providing support wheels 28L/28R with weights 22; driving a first drive shaft 34 of seeding devices 8L/8R by a first power take-off unit 7 for taking out power from a ground-engaging wheel 11; driving a second drive shaft 129 of a fertilizing unit 9 by a second power take-off unit 140 for taking out power from the support wheel 28L; providing the second power take-off unit 140 with a first boss section 157 of an axle 138 of the support wheel 28L and an elastic link mechanism 152 for elastically connecting between second boss sections 160 of the second drive shaft 129 in any direction; and disposing a fertilizer hopper 123 on the second drive shaft 129 at the position higher than the seeding devices 8L/8R, and in a side view, on the upward of weight tables 70L/70R.

Description

  The present invention includes a work device that performs a predetermined work on a farm field while being attached to a traveling vehicle and left and right support wheels that support the work machine at a predetermined height, and the work device performs basic work. The present invention relates to a work machine configured with a basic work device and an additional work device that performs additional work in parallel with the basic work, and in particular, a power transmission configuration and a storage case arrangement configuration in the work device when performing a plurality of tasks in parallel. And about.

Conventionally, a technique related to a working machine such as a sowing machine and a fertilizer machine that is disposed behind a rotary cultivator connected to a tractor and continuously performs sowing and fertilizing work on a field immediately after plowing (for example, Patent Document 1) And a technique related to a no-tillage working machine for directly sowing soybeans, corn, etc. in a field that is in a non-plowing state after harvesting wheat (see, for example, Patent Document 2).
Each working machine is provided with a sowing device, a fertilizer, etc. (hereinafter referred to as “working device”) and a disk-shaped groove forming tool, and the groove is formed by the groove forming tool while being pulled by the tractor. Then, from the working device driven by a single ground ring that rolls on the soil surface, seeds and fertilizers are drawn out and dropped into the groove, and the depth of the groove is adjusted to a gauge ring or the like. Work such as sowing and fertilization is carried out so as to adjust appropriately with the support wheel.
In this regard, an additional work device for performing a new work (hereinafter referred to as “additional work”) is added to a work machine having a basic work apparatus for performing work that is always performed (hereinafter referred to as “basic work”). By adding, there is a strong demand for improving the work efficiency and improving the versatility of the work machine by allowing additional work that has been performed separately after the basic work to be performed in parallel. For example, usually seeding work is performed with a sowing work device, and if necessary, a fertilization work device is added to perform simultaneous fertilizing and sowing work, or a seeding work device with different seeds placed in a hopper is added to the same groove. In some cases, multiple seeds are sown simultaneously.
However, a single grounding wheel such as the above-mentioned technique has insufficient rotational power, and it is difficult to normally drive all of the working devices. In particular, if the grounding wheel is difficult to rotate due to the resistance received from the drive shafts of multiple working devices, the hardness will be reduced in a non-tillage field where the soil is not homogenized by tillage, Due to the uneven and highly inclined soil surface, the grounding ring is very slippery.
Therefore, a grounding wheel is provided for each work device to ensure sufficient rotational power, or the weight of the entire work machine acts on the grounding part. Thus, it can be considered that slipping is suppressed by taking out the rotational power.

Japanese Utility Model Publication No. 5-4808 Japanese Utility Model Publication No. 6-13616

However, when a grounding ring is provided for each work device, there is a problem that the number of parts increases, the part cost increases, and the maintainability deteriorates.
Furthermore, simply changing the ground wheel drive to the support wheel drive does not provide sufficient frictional resistance when the work equipment is small and the weight of the entire work equipment is light, and soil homogenization is achieved by tillage. In unplowed and uncultivated fields that are not well-developed or originally undulating, slippage occurs due to unevenly hard soil surfaces with large slopes, and variations in driving force transmitted from the support wheels to the drive unit of the work equipment There is a problem that the working accuracy of sowing and fertilization deteriorates.

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
That is, according to the first aspect of the present invention, the working device includes a working device that performs a predetermined work on the farm field while being attached to the traveling vehicle, and left and right support wheels that support the working machine at a predetermined height. In a working machine constituted by a basic work device for performing work and an additional work device for performing additional work in parallel with the basic work, a weight for adding weight to the support wheel is provided, and a first of the basic work devices is provided. The drive shaft is driven by a first power take-out device that takes out and transmits rotational power from a grounding wheel arranged in parallel with the basic work device, while the second drive shaft of the additional work device receives rotational power from the support wheel. The second power take-out device is driven by a second power take-out device that takes out and transmits, and the second power take-out device includes a wheel-side support shaft portion that supports the axle of the support wheel and a work-side support that supports the second drive shaft. Leave between shafts An expansion / contraction link mechanism coupled to be extendable / contractible in a direction, and by means of the expansion / contraction link mechanism, the storage case provided on the second drive shaft is positioned higher than the basic work device and the left and right support wheels in a side view. It can be arranged above at least one of the weights on which the weight is placed.
According to a second aspect of the present invention, the telescopic link mechanism is constituted by connecting a plurality of link arms, and providing a power transmission path from the axle to the second drive shaft along the link arms.
4. The power transmission path according to claim 3, wherein the power transmission path includes a plurality of sprockets fixed to the axle, the second drive shaft, an intermediate shaft between the axle and the second drive shaft, and a plurality of windings wound between the sprockets. It is equipped with a chain.

Since this invention was comprised as mentioned above, there exists an effect shown below.
That is, according to claim 1, it is not necessary to drive the additional working device using the already provided support wheel and to newly provide a grounding wheel, and to reduce the number of parts and to reduce the parts cost and improve the maintainability. Can do. In addition, the telescopic link mechanism allows the storage case of the additional work device to be placed in the upper space without the basic work device, increasing the options for work devices that can be added, and improving the versatility and work efficiency of the work equipment. Can be planned. In addition, the weight of the weight is applied to the support wheel, and at the same time, a storage case made of a weight body containing seeds and fertilizer is attached to the upper part of at least one of the support wheel and the weight base by a telescopic link mechanism. When the weight of the storage case can be made to act stably on the support wheel, directly or indirectly via a weight base, and the weight of the entire work machine is light. Even so, a sufficiently large frictional resistance is generated in the support wheel. As a result, even in a non-tillage field where the soil is not homogenized by tillage, or a field that is originally undulating, the soil is not slipped by the soil surface with uneven hardness and a large slope. Variations in driving force transmitted from the wheel to the additional work device are reduced, and work accuracy such as sowing and fertilization is improved.
According to the second aspect of the present invention, the telescopic link mechanism can be configured by simply providing a link arm, which can further reduce the component cost and improve the maintainability.
According to claim 3, a chain transmission mechanism can be provided in the power transmission path, the power transmission path length can be easily changed as compared with the gear transmission mechanism alone, and the transmission efficiency is better than that of the belt transmission mechanism. In addition, the rotational power of the axle is reliably transmitted to the second drive shaft, and the working accuracy such as sowing and fertilization is further improved.

It is a rear view of the state which mounted | worn the no-till working machine concerning this invention in the rear part of the tractor. It is a side view of the 1st power take-out device peripheral part. It is a side view of a seeding apparatus. It is a side view of the peripheral part of the 2nd power take-out device. It is AA arrow sectional drawing of FIG. It is a side view of the 2nd power take-out device peripheral part of another form which added the seeding device for mixed sowing. It is a side view of the peripheral part of the 2nd power take-out device of another form which omitted the fertilizer and added the sowing device for mixed sowing.

Hereinafter, embodiments of the present invention will be described in detail.
The direction indicated by the arrow F in FIG. 2 and subsequent figures is the forward direction of the tractor 1 and the no-tillage work machine 2 that are traveling vehicles, and the positions and directions of the members described below are based on this forward direction. Is.

First, the overall configuration of the no-tillage working machine 2 will be described with reference to FIGS. 1 to 4.
The no-till working machine 2 is mounted on the rear portion of the tractor 1 that is a traveling vehicle so as to be lifted and lowered via a lifting mechanism 5 having a pair of left and right lower links 3 and 3 and a top link 4. Driving force is taken out by rolling of the body support devices 10L and 10R that support the square pipe-shaped depth frame 17 installed laterally on the mounting device 6 behind the tire 66 of the tractor 1 at both left and right ends, and the grounding wheel 11. The first power take-out device 7 that transmits to the first drive shaft 34, the left and right sowing devices 8L and 8R that drive the feeding portion 12 with the driving force from the first drive shaft 34 to feed seeds in the soil, The second power take-out device 140 that takes out the driving force by rolling the support wheel 28L of the left body support device 10L and transmits it to the second drive shaft 129, and the seed force by the driving force from the second drive shaft 129. Composed of fertilization device 9 for fertilization by feeding fertilizer.

  In addition, it is not restricted to the tractor 1 shown in a present Example that such a no-till working machine 2 is mounted | worn, A fertilization work and a sowing work can be performed in a farm field, advancing the non-till working machine 2 Anything is acceptable.

  In the mounting device 6, a pair of left and right side plates 13L and 13R are opposed to each other, and the side plates 13L and 13R are parallel to the lower plate portions 13La and 13Ra and the inclined plate portion 13Lb inclined obliquely upward on the inside. -It is comprised from 13Rb and the upright board part 13Lc * 13Rc extended upwards. Then, the connecting pin 16 is horizontally mounted between the upper end portions of the left and right upright plate portions 13Lc and 13Rc to form the top link mast 14.

  Further, connecting pins 15 and 15 are passed through the lower portions of the lower plate portions 13La and 13Ra toward the left and right outwards, and the rear portions of the lower links 3 and 3 are respectively connected to the front portions of the connecting pins 15 and 15 respectively. The end portion is fitted, and the connecting pin 16 of the top link mast 14 is connected to the rear end of the top link 4 that can be expanded and contracted.

  Of these, the connecting pins 15 and 15 are inserted from below into locking recesses 13Le and 13Re that open downward at the lower part of the lower plate portions 13La and 13Ra, and are connected to the front and rear of the locking recesses 13Le and 13Re. Between the lower edges, a closing plate 150 is detachably bridged by front and rear fixing pins 151 and 151. Accordingly, the rear end portions of the lower links 3 and 3 can be easily attached to and detached from the lower portions of the lower standing plate portions 13La and 13Ra with the connecting pins 15 and 15 being attached.

  On the other hand, rectangular recesses 13Ld and 13Rd are opened rearward at the rear portions of the lower plate portions 13La and 13R1a, and the front portion of the depth frame 17 is fitted into the left and right recesses 13Ld and 13Rd. The mounting device 6 is configured by the depth frame 17 and the side plates 13L and 13R.

  Thus, the no-tillage working machine 2 can be reliably mounted on the rear part of the tractor 1 through the three links 3, 3, 4 provided in the lifting mechanism 5 of the tractor 1 so as to be lifted and lowered.

  Further, the body support devices 10L and 10R are arranged at the left and right ends of the depth frame 17, and the seeding devices 8L and 8R are arranged in a row on the depth frame 17 inside the both body support devices 10L and 10R. At the same time, the first power take-out device 7 is disposed via a common mounting member 20 in the vicinity of the right airframe support device 10R.

  Further, from the outer side of the lower portion of the left inclined plate portion 13Lb, two front and rear connecting stays 18L and 18L are projected outwardly in a trapezoidal shape as viewed from the rear, and a mounting plate is attached to the outer end of the connecting stays 18L and 18L. 19L is fixed upright. Similarly, the front and rear two connecting stays 18R and 18R protrude outward from the outer surface of the lower portion of the right inclined plate portion 13Rb, and the mounting plate 19R is erected and fixed at the outer end thereof. The fertilizer application device 9 is mounted on the left and right mounting plates 19L and 19R. Then, the second power provided with the telescopic link mechanism 152 according to the present invention between the left end of the second drive shaft 129 for driving the fertilizer application device 9 and the support wheel 28L of the left machine support device 10L. A take-out device 140 is interposed.

  As a result, the seeding devices 8L and 8R, the depth frame 17 supported at a predetermined height by the left and right body support devices 10L and 10R, and the side plates 13L and 13R on which the depth frame 17 is horizontally disposed, The first power take-out device 7, the fertilizer application device 9, and the power take-out device 140 can be attached to the mounting device 6, and these devices 7, 8 L, 8 R, 9, 10 L, 10 R, and 140 are attached by the tractor 1. It is towed so that it can simultaneously carry out sowing and fertilization while progressing.

Next, the airframe support devices 10L and 10R will be described with reference to FIGS.
As shown in FIGS. 1 and 2, in the right airframe support device 10R, the mounting member 20 is fastened and fixed to the right end portion of the depth frame 17, and a weight base 70R is attached to the front and rear portions of the mounting member 20. And a support pipe 71 having an axial center in the vertical direction.

  Of these, on the weight base 70R, weights 22 are stacked in a plurality of stages in the vertical direction, in this embodiment, three stages. Then, the fixing bar 23 is inserted from above so as to penetrate substantially the center of the weight 22 in plan view, and the lower end thereof is locked to the weight base 70R, so that the weight 22 is placed on the mounting member 20. It can be placed and fixed.

  A support bar 26 is inserted into the support pipe 71 in the vertical direction, and a plurality of bolts 29 are screwed in from the side surface of the support pipe 71 to hold the support bar 26, whereby the support bar 26 is The support pipe 71 is fastened and fixed to be slidable up and down.

  At the lower end of the support bar 26, a substantially right and left central portion of a rear-view portal support arm 27 is fixed, and a right support wheel is provided between the left and right support plate portions 27a and 27b constituting the support arm 27. 28R is pivotally supported so as to be rotatable in the front-rear direction.

  As a result, the bolt 29 is once loosened, the support bar 26 is slid up and down along the support pipe 71, and then the bolt 29 is retightened, whereby the support wheel 28 </ b> R protrudes downward from the mounting member 20. The length can be adjusted, and the height of the right end portion of the depth frame 17 from the soil surface can be freely changed.

  As shown in FIGS. 1 and 4, in the left body support device 10 </ b> L, an attachment member 21 is fastened and fixed to the left end portion of the depth frame 17, and the weight member is also attached to the front and rear portions of the attachment member 20. 70L and a support pipe 71 having an axial center in the vertical direction are fixed.

  Of these weights 70L, the weights 22 are stacked in three stages in the vertical direction, and the fixing bar 23 is inserted from above so that the weights 22 pass through substantially the center of the weight 22 in plan view. The plurality of weights 22 are mounted and fixed on the attachment member 21.

  The support bar 26 is also inserted in the support pipe 71 in the vertical direction, and the support bar 26 is inserted into the support pipe 71 by screwing a plurality of bolts 29 from the side surface to hold the support bar 26. Fastened and fixed slidable up and down.

  At the lower end of the support bar 26, a left and right center part of a support arm 154 that is substantially gate-shaped in plan view is fixed, and the left and right support plate parts 154a and 154b that constitute the support arm 154 and extend obliquely rearwardly. The left support wheel 28L is pivotally supported between the rear ends so as to be rotatable in the front-rear direction, and the height of the left end portion of the depth frame 17 from the soil surface is the same as in the airframe support device 10R. Can be changed freely.

  By using the left and right airframe support devices 10L and 10R as described above, the left and right end portions of the depth frame 17 and the left and right support wheels 28L and 28R are pressed from above by the weights of the plurality of weights 22, and are removed from the soil surface when grooving. The aircraft body is prevented from being lifted by the reaction force received, and the relative position between the support pipe 71 and the support bar 26 is adjusted by the fastening position of the bolt 29 to change the height of the depth frame 17 from the soil surface, By changing the height of the seeding devices 8L and 8R attached to the depth frame 17, the groove depth and the like can be adjusted.

  Next, the seeding devices 8L and 8R and the power transmission configuration will be described with reference to FIGS. Since the two seeding devices 8L and 8R have substantially the same structure, only the right seeding device 8R will be described in the following description, and the description of the left seeding device 8L will be omitted.

  As shown in FIGS. 1 and 3, in the seeding device 8R, the left and right side plates 74a and 74b are connected to the depth frame 17 on the inner side of the right body support device 10R by the upper and lower connecting boss portions 74c and 74d. A mounting frame 74 is detachably mounted by a mounting tool 153. On the rear side of the mounting member 74, a swing frame is formed by connecting left and right side plates 76a and 76b with upper and lower connecting boss portions 76c and 76d. 76 is arranged.

  The rear support shafts 83a and 83b that are pivotally supported by the upper and lower connection boss portions 76c and 76d and the front support shafts 82a and 82b that are pivotally supported by the upper and lower connection boss portions 74c and 74d are vertically Are connected by a parallel link 75 comprising upper swing arms 80 and 80 and lower swing arms 81 and 81 arranged in parallel, and the swing frame 76 is swingably connected to the mounting member 74. .

  Further, left and right support stays 85L and 85R are suspended from the rear lower portion of the swing frame 76, and a disk-shaped coulter 86 is rotatably supported between the support stays 85L and 85R. The coulter 86 has a thin disk shape as a whole, and has a sharp cutting edge sharpened on the outer periphery on the entire outer periphery. When the no-tillage working machine 2 is pulled by the tractor 1, the coulter 86 is It rotates so that the outer peripheral cutting edge is cut in a direction perpendicular to the soil surface so that a narrow groove can be formed.

  In addition, on the rear side of the coulter 86, a widened portion 89 composed of a backing plate member 87 and a widened member 88 and a seed guide portion 90 having an upper and lower through hole 90a are provided in series. Of these, the contact plate member 87 prevents the retention of grass or the like between the coulter 86 and the widening member 88, and widens the narrow groove formed by the coulter 86 with the widening member 88. After the seeding grooves are formed, the seed guide part 90 guides the seeds that are drawn from the feeding part 12 and fall into the seeding grooves through the upper and lower through holes 90a.

  The upper end of the seed guide 90 is fastened and fixed to the rear half of the left and right holding frames 91L and 91R extending rearward from the left and right side plates 76a and 76b. Support stays 92 and 93 are erected from the front and rear substantially central portions and rear end portions. The support plate 92 is bridged between the support stays 92 and 93 with the fixing plate 94 inclined obliquely to the left, and the feeding device 95 including the feeding portion 12 is fastened and fixed to the upper surface of the fixing plate 94. Yes.

  A discharge port (not shown) is opened at a lower portion of the feeding device 95 above the upper opening of the upper and lower through-holes 90a, and communicated with the feeding portion 12 at the upper portion of the feeding device 95. Seed hopper 96 is provided, and when the feeding device 95 is driven, seeds stored in the seed hopper 96 fall from the discharge port into the seed guide portion 90 through the feeding portion 12, The seed guide portion 90 is inserted into the sowing groove.

  From both outer surfaces of the holding frames 91L and 91R, a tail wheel support frame 97 extends obliquely rearward, and between the support portions 97a and 97b branched to the left and right at the rear part of the tail wheel support frame 97, a tail wheel shaft is provided. 98a is rotatably supported, and the tail wheel 98 is externally fixed to the tail wheel shaft 98a. A scraper 99 that mechanically scrapes dirt, stocks, ridges, and the like adhering to the outer peripheral surface of the tail wheel 98 is provided at the rear part of the tail wheel support frame 97, and the height of the tail wheel 98 is adjusted. A first adjustment tool 101 and a second adjustment tool 102 that perform front position restriction are disposed at the rear ends of the left and right holding frames 91L and 91R.

  As a result, a pair of extension bars are interposed between the connecting bar 80a between the rear portions of the upper swing arms 80 and 80 and the connection bar 81a between the front portions of the lower swing arms 81 and 81. The link springs 84 and 84 press the coulter 86, the widening portion 89, the seed guide portion 90, and the tail wheel 98 against the soil surface with a constant pressure, so that the feeding portion 12 can follow the unevenness of the soil surface, The sowing height from the surface to the feeding part 12 is always set to be substantially the same, so that the sowing accuracy is increased by suppressing the variation in the sowing position during work.

  Further, a rear gear box 105 is provided on the right side surface of the fixed plate 94, and a feeding shaft 12a for driving the feeding portion 12 is inserted into the rear gear box 105. The feeding shaft 12a A bevel gear 109 fixed to the lower end and a bevel gear 108 meshing with the bevel gear 109 and having an axial center in the front-rear direction are housed. On the other hand, a front gear box 104 is also provided on the right side surface of the right side plate 74b. In the front gear box 104, the first drive shaft 34 is fitted and a bevel gear 106 having an axial center in the left-right direction; A bevel gear 107 meshing with the bevel gear 106 and having an axial center in the front-rear direction is housed.

  The gear shaft 111 of the bevel gear 107 and the gear shaft 110 of the bevel gear 108 in the rear gear box 105 are connected via a link mechanism 115 including front and rear universal joints 112 and 113, a connecting shaft 114, and the like. The driving force transmitted to the first drive shaft 34 is fed through the bevel gear trains 106 and 107, the link mechanism 115, the bevel gear trains 108 and 109, and the feed shaft 12a. To be communicated to.

  As shown in FIGS. 1 and 2, the first power take-out device 7 for taking out the driving force to the first drive shaft 34 of the seeding devices 8L and 8R is grounded on the soil surface and the tractor 1 The grounding wheel 11 that rolls as it advances, and is interposed between the grounding wheel 11 and the first drive shaft 34, transmits the rotational power of the grounding wheel 11 to the first drive shaft 34 as a driving force. A transmission case 35 for accommodating a sprocket, a chain, and the like, and a support frame 37 for connecting and supporting the grounding ring 11 and the transmission case 35 together with the depth frame 17 are provided.

  Here, in the mounting member 20, a square pipe-shaped device frame 38 protrudes to the right, and the left and right support stays 40 are L-shaped in the right side view on the rear surface near the base of the device frame 38. The front end of 40 is fixed, and the notch portions of the left and right suspension stays 39 and 39 are fitted to the lower surface of the projecting end of the apparatus frame 38. A connection plate 103 is fastened and fixed between the lower portions of the suspension stays 39 and 39. A front end upper portion of a transmission case 35 in which the first drive shaft 34 is penetrated through the connection plate 103 is rotated. While being pivotally supported, the front lower portion of the support frame 37 is fitted on the upper portions of the support stays 40 and 40 and fastened and fixed by a plurality of bolts.

  The support frame 37 extends rearward substantially horizontally, and its rear portion branches to the left and right to become support portions 37a and 37b, and is a connecting pin 43 horizontally mounted between the left and right support portions 37a and 37b. A buffer bar 42 having cushion springs 64 and 65 fitted up and down with the connecting pin 43 interposed therebetween is slidably inserted.

  A lower end of the buffer bar 42 is connected to a support shaft portion 44 disposed between the grounding wheel 11 and the rear end portion of the transmission case 35, and an axle 36 is inserted through the support shaft portion 44. The axle 36 is rotatably supported by bearings provided at both left and right ends of the support shaft portion 44, and the left and right middle portions of the axle 36 are interposed via a buffer bar 42, a support frame 37, the mounting member 20, and the like. It is supported by the depth frame 17.

  The axle 36 is extended to the left, and its extension end is inserted and fixed at the center of rotation of the ground ring 11, and the axle 36 is also extended to the right. The power input portion 35a at the rear end of the transmission case 35 is rotatably supported.

  In the transmission case 35, a first intermediate shaft 45, a second intermediate shaft 46, and a third intermediate shaft 47 are rotatably supported in order from the rear in parallel with the axle 36 and the first drive shaft 34. . Sprockets 52 and 53 are respectively fixed to the first intermediate shaft 45 and the second intermediate shaft 46, and a chain 58 is wound between the sprockets 52 and 53, and the third intermediate shaft 47. The first drive shaft 34 is also fixed with sprockets 56 and 57, respectively, and a chain 60 is wound between the sprockets 56 and 57.

  A transmission case 48 is detachably provided on the right side surface of the transmission case 35 from the axle 36 to the first intermediate shaft 45, and the axle 36 and the first intermediate shaft are disposed in the transmission case 48. The first gear 50 and the second gear 51 for reversing the rotation direction are fixed to the outer ends, and the gears 50 and 51 are always meshed with each other. Similarly, a transmission case 49 is also detachably covered from the second intermediate shaft 46 to the third intermediate shaft 47, and the second intermediate shaft 46 and the third intermediate shaft 47 are provided in the transmission case 49. The first sprocket 54 and the second sprocket 55 are fixed to each outer end, and a chain 59 is wound between the sprockets 54 and 55.

  As a result, when the no-tillage working machine 2 advances together with the tractor 1, the grounding wheel 11 of the first power take-out device 7 rotates, and this rotational power is used as a driving force from the axle 36 to the gears 50 and 51, Via the first intermediate shaft 45, sprocket 52, chain 58, sprocket 53, second intermediate shaft 46, first sprocket 54, chain 59, second sprocket 55, third intermediate shaft 47, sprocket 56, chain 60, sprocket 57 Then, it is transmitted to the first drive shaft 34 and transmitted to the feeding section 12 of the seeding devices 8L and 8R as described above.

Next, the fertilizer application device 9 and its power transmission configuration will be described with reference to FIGS.
As shown in FIGS. 1, 3, and 4, in the fertilizer application device 9, left and right support stays 121 </ b> L and 121 </ b> R are erected from the outer surfaces of the mounting plates 19 </ b> L and 19 </ b> R of the mounting device 6. A front frame portion 122 a of a rectangular hopper frame 122 having a rectangular shape in plan view is provided on the upper ends of the stays 121 </ b> L and 121 </ b> R, and a fertilizer hopper 123 for storing fertilizer is placed and fixed in the hopper frame 122.

  The lower part in the fertilizer hopper 123 is formed with funnel-shaped left and right downflow passages 123a and 123b, and a pair of feeding devices 124a and 124b are connected to the downflow passages 123a and 123b, respectively. The feeding devices 124a and 124b are connected to and supported by the fertilization frame 126 that is fitted in the recesses 121La and 121Ra in the rear portions of the support stays 121L and 121R, respectively, via attachment members 127, and the feeding device. The second drive shaft 129 passes through the feeding portions 124a and 124b so as to penetrate therethrough.

  Furthermore, the upper ends of the fertilizer hoses 125 are connected to the discharge ports 124a1 and 124b1 of the feeding devices 124a and 124b, respectively, and the lower ends of the fertilizer hoses 125 are connected to the coulters 86 of the seeding devices 8L and 8R. When the feeding devices 124 a and 124 b are driven by the second drive shaft 129, the fertilizer stored in the fertilizer hopper 123 is placed immediately before the coulter 86 through the fertilizer hose 125. I am trying to be dropped.

  As a result, the fertilizer that has fallen is cut with the coulter 86 and, after being pushed into the grooved narrow groove and mixed with the soil, the narrow groove is widened by the widening portion 89, Compared with the case where the seed that has passed through the upper and lower through holes 90a of the seed guide part 90 can be dropped, and the fertilizer is only dropped to the left and right sides of the seed guide part 90, the seeds are put into the soil mixed with the fertilizer. The fertilizer can be added to increase the survival of the plant, and the fertilizer can be prevented from rolling on the field scene, so that the accuracy of fertilization can be increased.

  Further, as shown in FIGS. 1, 4 and 5, the second power take-out device 140 for taking out the driving force to the second drive shaft 129 of the fertilizer application device 9 includes the left airframe support device 10L. A support wheel 28L, which is also a constituent element, and an expansion / contraction link mechanism 152 that connects the support wheel 28L and the second drive shaft 129 in an extendable manner are provided.

  Of these, the support wheel 28L is fitted on an axle 138 that is rotatably provided between the left and right support plate portions 154a and 154b of the support arm 154, and the longitudinal direction about the axle 138. It can be rotated.

  The axle shaft 138 extends to the left and is reduced in diameter, and a sheath tube 155 of the telescopic link mechanism 152 is fitted on the reduced diameter portion 138a so as to be slidable in the axial direction. A bolt 156 is screwed into the right half from the outer periphery toward the axis so as to penetrate the radial direction.

  The telescopic link mechanism 152 includes a first boss portion 157 that is fitted on the left half portion 155a of the sheath tube 155 and pivotally supported via a bearing, and a first transmission case 161 provided with the first boss portion 157 at the lower end. The second transmission case 162 connected to the first transmission case 161, the rear end portion of the second transmission case 162, and the upper end portion of the first transmission case 161 can be rotated in the front-rear direction via a bearing. Link boss portions 158 and 159 connected to each other, and a second boss portion 160 which is provided at the front end portion of the second transmission case 162 and is externally fitted to the left end portion of the second drive shaft 129 and supported by a bearing. The

  Thus, a pair of transmission cases 161 and 162 that can be refracted in the front-rear direction with the link shaft 173 pivotally supported by the link boss portions 158 and 159 as a fulcrum are connected, and the transmission cases 161 and 162 are connected to the link arms. The fertilizer provided on the second drive shaft 129 can be formed in such a way that the link structure that can be folded is formed, the position of the second drive shaft 129 is expanded and contracted in an arbitrary direction around the axle 138 of the support wheel 28L. The telescopic link mechanism 152 capable of changing the position of the hopper 123 can be configured.

  Further, in the first transmission case 161 of the telescopic link mechanism 152, the link shaft 173 in which the reverse shaft 172 and the sheath tube 174 are externally fitted in order from the bottom in parallel with the axle shaft 138 and the second drive shaft 129. The reverse half shaft 172 and the link shaft 173 are rotatably supported by the intermediate boss portion 176 and the link boss portion 158, respectively. In addition, sprockets 164 and 165 are fitted and fixed to the reverse shaft 172 and the sheath tube 174 of the link shaft 173, respectively, and a chain 170 is wound between the sprockets 164 and 165.

  A transmission case 177 is detachably provided on the left side surface of the first transmission case 161 from the axle 138 to the reverse rotation shaft 172. The transmission case 177 includes the axle 138 and the reverse rotation shaft 172. The left end penetrates, and at each left end, a first gear 168 and a second gear 169 for reversing the rotation direction are fixed, and the gears 168 and 169 are always meshed.

  In the second transmission case 162, the right half of the link shaft 173 fitted with the sheath tube 174 and the left end portion of the second drive shaft 129 fitted with the sheath tube 175 are arranged in the rear and front. The link shaft 173 and the second drive shaft 129 are rotatably supported by the link boss portion 159 and the second boss portion 160, respectively. In addition, sprockets 166 and 167 are fixed to the sheath tube 174 of the link shaft 173 and the sheath tube 175 of the second drive shaft 129, respectively, and the chain 171 is wound between the sprockets 166 and 167. Has been.

  As a result, when the no-tillage working machine 2 advances together with the tractor 1, the support wheel 28 </ b> L of the second power take-out device 140 rotates, and this rotational power is transferred from the axle 138 to the gears 168 and 169 and the reverse shaft 172. , The sprocket 164, the chain 170, the sprocket 165, the link shaft 173, the sprocket 166, the chain 171, the sprocket 167, and the second drive shaft 129, and is transmitted to the fertilizer 9 as a driving force. .

  In this case, in any of the boss portions 157, 158, 159, and 160, the bolts 156 are turned so that the shafts 138, 173, and 129 are held at their tips, and the shafts 138, 173, and 129 are pressed. 129 can be provided detachably with respect to the sheath tube 155, 174, 175, and the assembly of the second power take-out device 140 can be improved.

  In the configuration as described above, the position of the fertilizer hopper 123 of the fertilizer application device 9, which is an additional work device, is obtained by expanding and contracting the second drive shaft 129 in an arbitrary direction around the axle 138 of the support wheel 28L by the expansion / contraction link mechanism 152. As shown in FIG. 1, the position of the fertilizer hopper 123 is higher than the seeding devices 8 </ b> L and 8 </ b> R, which are basic work devices, as shown in FIG. 1. In the side view, it can be disposed above the left and right weight bases 70L and 70R.

  Then, a sufficiently large installation space can be provided at a higher position than the seeding devices 8L and 8R, and the number and types of fertilizers 9 that can be added can be increased. In addition, the fertilizer hopper 123, which has become a heavy body by adding seeds and fertilizer, can be disposed above the left and right weight bases 70L and 70R in a side view, whereby the weight of the fertilizer hopper 123 becomes vertical load Acts on the weight bases 70L and 70R. As a result, the resultant force of the weight of the fertilizer hopper 123 and the weight of the weight 22 always acts on the left and right support wheels 28L and 28R supported by the mounting members 20 and 21 to which the weight bases 70L and 70R are fixed. Will be. On the other hand, when the fertilizer hopper 123 is not disposed above any of the support wheels 28L and 28R and the weight bases 70L and 70R in a side view, the hopper frame 122, the side plates 13L and 13R, and the depth frame 17 are disposed. The vertical load applied to the support wheels 28L and 28R is reduced through the frame members such as the mounting members 20 and 21, and the frictional resistance generated in the support wheels 28L and 28R is also reduced.

  That is, a working device that performs a predetermined work on the farm field while traveling on the tractor 1 that is a traveling vehicle, and left and right support wheels 28L and 28R that support the no-till working machine 2 that is a working machine at a predetermined height. And the working device is a sowing device 8L, 8R that is a basic working device that performs a sowing work that is a basic work, and a fertilizer that is an additional working device that performs a fertilizing work that is an additional work in parallel with the sowing work. In the no-till working machine 2 configured with the device 9, a weight 22 is provided as a weight for adding weight to the support wheels 28L and 28R, and the first drive shaft 34 of the seeding devices 8L and 8R The second drive shaft 129 of the fertilizer application device 9 is rotated from the support wheel 28L while being driven by the first power take-out device 7 that takes out and transmits the rotational power from the grounding wheel 11 arranged in parallel with the devices 8L and 8R. The second power take-out device 140 is driven by a second power take-out device 140 that takes out and transmits the force, and the second power take-out device 140 includes a first boss portion 157 that is a wheel side support shaft portion that supports the axle 138 of the support wheel 28L. A telescopic link mechanism 152 that couples the second boss 160, which is a work-side support shaft that pivotally supports the second drive shaft 129, so as to be extendable and contractable in an arbitrary direction. A fertilizer hopper 123, which is a storage case provided on the drive shaft 129, is positioned higher than the seeding devices 8L, 8R, and a weight base, which is a weight base on which the left and right support wheels 28L, 28R and weights 22 are placed in a side view. At least one of 70L and 70R, in this embodiment, can be disposed above the left and right weight bases 70L and 70R. Fertilizing device 9 is driven by use, it is not necessary to provide the ground wheels 11, it is possible to improve the reduction or maintenance of parts cost due to the number of parts reduced. Furthermore, the telescopic link mechanism 152 allows the fertilizer hopper 123 of the fertilizer application device 9 to be disposed in the upper space without the seeding devices 8L and 8R, increasing the options of the fertilizer application device 9 that can be added, and the no-tillage work machine 2 The versatility and work efficiency can be improved. In addition, the weight of the weight 22 is applied to the support wheels 28L and 28R, and at the same time, the fertilizer hopper 123, which is a heavy body by adding seeds and fertilizer, in this embodiment, fertilizer, is It is arranged above at least one of the support wheels 28L and 28R and the weight bases 70L and 70R, in this embodiment, above the weight bases 70L and 70R, and the weight of the fertilizer hopper 123 can be set directly or by the weight bases 70L and 70R. Indirectly, the support wheels 28L and 28R can be stably acted on, and the number of additional work devices is small only with the fertilizer 9 as in this embodiment, and the total weight of the no-tillage work machine 2 is light. Even in such a case, a sufficiently large frictional resistance is generated in the support wheels 28L and 28R. As a result, even in a non-tillage field where the soil is not homogenized by tillage, or a field that is originally undulating, the soil is not slipped by the soil surface with uneven hardness and a large slope. Variations in the driving force transmitted from the wheel 28L to the fertilizer application 9 are reduced, and work accuracy such as sowing and fertilization is improved.

  Further, the telescopic link mechanism 152 is configured by connecting transmission cases 161 and 162 as a plurality of link arms, and the power from the axle 138 to the second drive shaft 129 along the transmission cases 161 and 162. Since the transmission path 179 is provided, the telescopic link mechanism 152 can be configured by simply connecting the transmission cases 161 and 162, so that the cost of parts can be further reduced and the maintainability can be improved.

  In addition, the power transmission path 179 includes a plurality of shafts 138, a second drive shaft 129, a reverse shaft 172 that is an intermediate shaft between the axle 138 and the second drive shaft 129, and a plurality of link shafts 173. Since the sprockets 164, 165, 166, and 167 and a plurality of chains 170 and 171 wound between the sprockets 164, 165, 166, and 167 are provided, a chain transmission mechanism can be provided in the power transmission path 179, Since the power transmission path length can be easily changed compared to the gear transmission mechanism alone, and the transmission efficiency is better than that of the belt transmission mechanism, the rotational power of the axle 138 is reliably transmitted to the second drive shaft 129, Work accuracy such as sowing and fertilization is further improved.

Next, another type of no-tillage working machine 2A, 2B will be described with reference to FIGS.
As shown in FIG. 5 and FIG. 6, the no-tillage working machine 2 </ b> A includes a simultaneous mixed sowing work by seeding the no-tillage working machine 2 with seeds different from the seeding devices 8 </ b> L and 8 </ b> R in the same groove. The left and right mixed sowing devices 180L and 180R are added, and the mixed sowing devices 180L and 180R are driven by the second power take-out device 140A in which the transmission distance of the second power take-out device 140 is further extended. It is. In addition, below, while it demonstrates centering on a different point from the said no-tillage working machine 2, the code | symbol same as the code | symbol used for each element points out the element which has the same or equivalent function, and the same code | symbol is shown. Explanation of the attached elements is omitted unless particularly required.

  In the no-tillage working machine 2A, L-shaped support stays 178L and 178R are rearwardly projected from further outer surfaces of the left and right support stays 121L and 121R that are erected from the outer surfaces of the mounting plates 19L and 19R. The mixed sowing frame 181 is horizontally provided between the rear ends of the support stays 178L and 178R.

  The left and right feeding devices 183L and 183R are connected and supported to the middle part of the mixed sowing frame 181 via attachment members 182. The feeding devices 183L and 183R and the mixed seeding device fixedly supported thereon are used. The left and right mixed sowing devices 180L and 180R are configured by the mixed sowing hoppers 184L and 184R for storing seeds.

  In the mixed sowing devices 180L and 180R, a second drive shaft 129A that drives the feeding portion of the feeding devices 183L and 183R is installed horizontally so as to penetrate the feeding portion, and the left and right sides of the second driving shaft 129A are substantially left and right. An extended transmission case 186 extending in the front-rear direction is interposed between the central portion and the substantially central portion on the left and right sides of the second drive shaft 129 of the fertilizer application device 9.

  In the extended transmission case 186, a sprocket 187 fixed to a sheath tube (not shown) that fits outside the second drive shaft 129 and a sheath tube (not shown) that fits outside the second drive shaft 129A are fixed. A sprocket 188 provided and a chain 189 wound between the sprockets 187 and 188 are accommodated, and such an extended transmission case 186 is connected to the second transmission case 162 of the second power take-out device 140. Thus, the second power take-out device 140A is configured.

  As a result, when the no-till working machine 2 </ b> A advances together with the tractor 1, the support wheel 28 </ b> L of the second power take-out device 140 </ b> A rotates, and the rotational power is transmitted to the fertilizer 9 via the power transmission path 179. Further, the rotational power of the second drive shaft 129 that drives the fertilizer application device 9 is transmitted to the mixed sowing devices 180L and 180R via the sprocket 187, the chain 189, the sprocket 188, and the second drive shaft 129A.

  Also in this case, the extended boss portion 191 provided at the rear end portion of the extended transmission case 186 around the second drive shaft 129 pivotally supported by the extended boss portion 190 provided at the front end portion of the extended transmission case 186. The second drive shaft 129 </ b> A that is pivotally supported by the shaft can be swung in the vertical direction, and together with the telescopic link mechanism 152, the telescopic link mechanism 152 </ b> A is configured.

  In the configuration as described above, the extension link mechanism 152A causes the second drive shaft 129 to expand and contract in an arbitrary direction around the axle 138 of the support wheel 28L, and the position of the fertilizer hopper 123 of the fertilizer application device 9 which is an additional work device. The second drive shaft 129A is swung to an arbitrary height around the second drive shaft 129, and the mixed sowing hoppers 184L and 184R of the mixed sowing devices 180L and 180R, which are new additional work devices, are provided. By changing the position of the fertilizer hopper 123, the position of the fertilizer hopper 123 is higher than the seeding devices 8L and 8R as the basic work devices, and is disposed above the left and right weights 22 in a side view, and the mixed sowing hopper The positions of 184L and 184R can be arranged higher than the seeding devices 8L and 8R and above the left support wheel 28L in a side view.

  That is, in the no-tillage working machine 2A, the second power take-out device 140A includes a first boss portion 157 that is a wheel-side support shaft portion that supports the axle 138 of the support wheel 28L, and the second drive shafts 129 and 129A. A telescopic link mechanism 152A for connecting the second boss portion 160 and the extended boss portion 191 that are working side support shafts that support the shaft so as to be extendable and contractable in an arbitrary direction, and the second drive shaft is provided by the extendable link mechanism 152A. The fertilizer hopper 123 and the mixed sowing hoppers 184L and 184R, which are storage cases provided in 129 and 129A, are positioned higher than the sowing devices 8L and 8R that are the basic working devices, and the left and right support wheels 28L and 28R in the side view. At least one of the weight bases 70L and 70R, which are weight bases on which the weights 22 are placed, in this embodiment, the left and right weight bases 70L and 70R and the left Since it is disposed above the support wheel 28L, both the fertilizer hopper 123 and the mixed sowing hopper 184L and 184R have a large installation space, and the options of the fertilizer 9 and the mixed sowing devices 180L and 180R that can be added increase. In addition to the combined force of the weight of the fertilizer hopper 123 and the weight 22, the vertical load of the mixed sowing hoppers 184L and 184R also acts stably on the left and right support wheels 28L and 28R. In comparison with this, a greater frictional resistance is generated in the support wheels 28L and 28R, and the occurrence of slip can be more reliably prevented.

  Moreover, as shown in FIGS. 5 and 7, the no-till working machine 2B omits the fertilizer application device 9 from the no-till working machine 2A, and the sowing devices 8L and 8R and the mixed sowing devices 180L and 180R. The mixed seeding machine 180L and 180R is driven by the second power take-out device 140 of the no-tillage working machine 2.

  Also in the no-tillage working machine 2B, support stays 178L and 178R are extended rearward from the mounting plates 19L and 19R, and a mixed sowing frame 181 is horizontally disposed between rear ends of the support stays 178L and 178R. The left and right feeding devices 183L and 183R are connected and supported to the middle part of the frame 181 via the mounting member 182. Furthermore, the second boss portion 160 of the second power take-out device 140 is externally fitted to and supported by the left end portion of the second drive shaft 129A that drives the feeding portion of the feeding devices 183L and 183R.

  As a result, when the no-tillage work machine 2B advances together with the tractor 1, the support wheel 28L of the second power take-out device 140 rotates, and the rotational power is transmitted through the power transmission path 179 to the mixed sowing device 180L. -It is transmitted to 180R.

  In the above-described configuration, the second link shaft 129A is expanded and contracted in an arbitrary direction around the axle 138 of the support wheel 28L by the expansion / contraction link mechanism 152, and mixed seeding of the mixed seeding devices 180L and 180R as additional work devices. By making it possible to change the positions of the hoppers 184L and 184R, the positions of the mixed hoppers 184L and 184R are higher than the seeding devices 8L and 8R as the basic working devices, and the left support wheel 28L in a side view. It can arrange | position above.

  That is, in the no-till working machine 2B, the mixed sowing hoppers 184L and 184R, which are storage cases provided with the second drive shaft 129A, are positioned higher than the sowing devices 8L and 8R as the basic working devices by the telescopic link mechanism 152. Thus, in the side view, at least one of the left and right support wheels 28L and 28R and the weight bases 70L and 70R, which are weights on which the weights 22 are placed, in the present embodiment, above the left support wheel 28L. Therefore, the installation space for the mixed sowing hoppers 184L and 184R is increased, the options of the mixed sowing devices 180L and 180R that can be added are increased, and the vertical loads of the mixed sowing hoppers 184L and 184R It will act stably on 28R and not as much as the no-till working machine 2A, but it is more Cause greater frictional resistance to the wheels 28L · 28R, it is possible to more reliably prevent the occurrence of slip.

  In the above embodiments, the present invention has been described by taking the non-tillage working machine 2, 2A, 2B as an example. However, the present invention is not limited to the non-tillage working machine 2, 2A, 2B. It can also be applied as a normal working machine attached to the machine.

  The present invention includes a work device that performs a predetermined work on a farm field while being attached to a traveling vehicle and left and right support wheels that support the work machine at a predetermined height, and the work device performs basic work. The present invention can be applied to all work machines configured with a basic work device and an additional work device that performs additional work in parallel with the basic work.

1 Tractor (traveling vehicle)
2 Tillage work machine (work machine)
7 First power take-off device 8L ・ 8R Sowing device (basic work device)
9 Fertilizer application equipment (additional work equipment)
11 Ground wheel 22 Weight (weight)
28L / 28R Support wheel 34 First drive shaft 70L / 70R Weight base (weight base)
123 Fertilizer hopper (storage case)
129 / 129A Second drive shaft 138 Axle 140 / 140A Second power take-off device 152 / 152A Telescopic link mechanism 157 First boss part (wheel side support shaft part)
160 2nd boss part (work side support shaft part)
161 ・ 162 Transmission case (link arm)
164 ・ 165 ・ 166 ・ 167 ・ 187 ・ 188 Sprocket 170 ・ 171 ・ 189 Chain 172 Reverse shaft (intermediate shaft)
173 Link shaft (intermediate shaft)
179 Power transmission path 180L / 180R Seeding device for mixed sowing (additional work device)
184L / 184R mixed sowing hopper (storage case)
186 Extension transmission case (link arm)
191 Extension boss (work side support shaft)

Claims (3)

  A working device for carrying out a predetermined work on a farm field while being mounted on a traveling vehicle; and left and right support wheels for supporting the work machine at a predetermined height, the working device comprising: a basic working device for performing basic work; In the working machine constituted by the additional work device that performs the additional work in parallel with the basic work, a weight for adding weight to the support wheel is provided, and the first drive shaft of the basic work device is provided with the basic work. The second drive shaft of the additional work device takes out the rotational power from the support wheel and transmits the second power while it is driven by the first power take-out device that takes out and transmits the rotational power from the grounding wheel arranged in parallel with the device. The second power take-off device is driven by a take-out device, and the second power take-out device has an arbitrary direction between a wheel side support shaft portion that supports the axle of the support wheel and a work side support shaft portion that supports the second drive shaft. Stretch to connect in a stretchable manner A weight mechanism on which the storage case provided on the second drive shaft is placed at a position higher than the basic work device and the left and right support wheels and weights are placed in a side view. A working machine characterized in that it can be arranged above at least one of the above.   2. The telescopic link mechanism is configured by connecting a plurality of link arms, and providing a power transmission path from the axle to the second drive shaft along the link arms. Work machine.   The power transmission path includes the axle, the second drive shaft, a plurality of sprockets fixed to an intermediate shaft between the axle and the second drive shaft, and a plurality of chains wound between the sprockets. The working machine according to claim 2, wherein:

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