JP6002911B2 - Seeding machine - Google Patents

Description

  In the present invention, a seeding unit including a seeding device is arranged in the left-right direction between a front wheel and a rear wheel arranged before and after the body frame, and a feeding portion of the seeding device is a frame shape provided on the body frame. The seeding machine is provided so that it can be attached to and detached from the feeding base, and the driving gear in the feeding base is engaged with the driven gear on the feeding part side to drive the feeding part. It is related with the attachment / detachment structure of the sowing apparatus which is excellent in the size and can be made compact.

Conventionally, in a sowing machine that performs sowing by providing a sowing unit equipped with a sowing device on a machine frame that supports a front wheel and a rear wheel, a technique that enables attachment and removal of a feeding part of the sowing device to the machine frame (for example, (See Patent Document 1).
In the technique, a frame body (hereinafter referred to as a “feeding base”) is provided on the machine body frame, a driving gear is provided on the feeding base, and a part of the feeding base can be opened. The feeding portion provided with a driven gear that meshes with the drive gear can be attached to and detached from the feeding base.

JP 2006-345733 A

However, in the above-described technique, in order to attach and detach the seeding device, the outer frame piece provided on the feeding base is largely opened to the left and right outer sides of the machine body, and then the feeding portion is inserted into the feeding base and disposed at the mounting position. After that, it is necessary to close the outer frame piece again to perform final positioning of the drive gear, etc., and there are many processes up to the mounting, and in addition, the feeding part is guided to the mounting position while being gripped by hand. The work load is large and the mounting work cannot always be performed quickly, and further improvement in mounting workability is desired.
Further, since the outer frame pieces opened to the left and right outer sides of the machine body interfere with the adjacent feeding base, when a large number of sowing units equipped with the sowing device are arranged in the left and right direction, the interval between the adjacent sowing units is increased. However, there has been a problem that enlargement of the airframe and limitation of the distance between the strips are unavoidable, resulting in deterioration of turning performance, increase of work load, and reduction of seeding performance.

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
That is, in claim 1, a sowing unit including a sowing device is arranged in the left-right direction between a front wheel and a rear wheel arranged before and after the airframe frame, and a feeding portion of the sowing device is arranged on the airframe frame. In the seeding machine, which is provided so as to be attachable / detachable to the provided frame-shaped feeding base, and the driving gear in the feeding base is engaged with the driven gear on the feeding portion side to drive the feeding portion. A plurality of holding bodies for holding the locking portion of the feeding portion, and insertion of the feeding portion from above the feeding portion into the feeding base, thereby turning the locking portion into one of the holding bodies. There is provided an elastic guide mechanism that slides and guides to another holding body opposed to the one holding body while being elastically biased toward the other.
According to a second aspect of the present invention, the elastic guide mechanism includes a sliding surface portion that stands up from the vicinity of the other sandwiching body and extends in the vertical direction, and in addition to the elastic guide body having elasticity, A regulating member is provided which has both a sliding function for sliding the locking portion up to the other holding body and a holding function for preventing the locking portion from being released from the holding space in the other holding body.
According to a third aspect of the present invention, the elastic guide body is formed of an elastic spring member, and has a support spring portion that extends downward by connecting a lower portion to the feeding base, and a biasing force that biases the locking portion. An upper and lower portion between the urging spring portion and the urging spring portion and the support spring portion, and when the feeding portion is removed, is gripped and pushed away from the locking portion to elastically deform the elastic guide body. An inverted V-shaped gripping spring corner is provided.
According to a fourth aspect of the present invention, the restriction member includes a locking surface portion that presses the upper portion of the locking portion from above, and a sliding slope portion that continues to the sliding surface portion of the biasing spring portion without a step. is there.

Since this invention was comprised as mentioned above, there exists an effect shown below.
In other words, according to the first aspect, the feeding portion can be stably and quickly moved to the other clamping body by only one operation of the downward insertion into the feeding base without being separated from the sliding surface by the elastic biasing force. Therefore, the mounting workability of the seeding device can be greatly improved. Furthermore, the shape of the feeding base, in particular the lateral width, does not change when the feeding part is attached / detached, and even when a large number of sowing units equipped with a sowing device are arranged in the left-right direction, between adjacent sowing units. Mutual interference can be prevented, the spacing between sowing units does not increase, avoiding the enlargement of the aircraft and the limitation of the distance between the streaks, improving the turning performance, reducing the work load, improving the sowing performance Can be achieved.
According to the second aspect, a plurality of functions can be shared by a restricting member that is a single member, the number of parts can be reduced, and parts cost can be reduced and assembling and maintenance can be improved.
According to the third aspect, the elastic guide body is formed with a simple structure of an integral spring member, and the gripping spring corner is formed by utilizing a connecting portion between the support spring portion and the biasing spring portion. Thus, the cost of parts can be further reduced.
According to the fourth aspect, the engaging portion can be smoothly guided to the other clamping body without being caught by a step during the sliding from the sliding surface portion of the elastic guide body to the sliding slope portion of the restricting member. It is possible to further improve the mounting workability of the seeding device.

It is a side view which shows the whole seeder's structure concerning this invention. It is also a plan view. It is explanatory drawing of the attachment or detachment structure of the seeding apparatus using an elastic guide mechanism. It is a top view of a delivery base. It is a back view similarly. It is a side view which shows the state which attached the sowing apparatus to the feeding base which fixed the cropping nail | claw. It is a side surface enlarged view of a feeding base rear part.

Hereinafter, embodiments of the present invention will be described in detail.
The direction indicated by the arrow F in FIG. 1 is the forward direction of the seeding machine 1, and the positions and directions of the members described below are based on this forward direction.

First, the entire configuration of the seeder 1 according to the present invention will be described with reference to FIGS. 1, 2, and 6.
The seeder 1 is provided with a pair of left and right body frames 2, 3. Between the front parts of the body frames 2, 3, a roller shaft 7 of a driving roller 5 is supported, while the body frames 2, 3. A roller shaft 8 of the pressure reducing roller 6 is supported between the rear portions.

  Further, between the front and rear substantially central portions of the machine body frames 2 and 3, support bars 11 and 12 are horizontally mounted on the front and back, and the front and rear ends of the feeding base 13 are supported by the support bars 11 and 12.

  On the upper surface of the feeding base 13, a seeding device 14 having a feeding portion 14 a at the lower portion is mounted. On the lower surface of the feeding base 13, a cropping claw 15 that supports a cover plate 16 is fixed on the rear side. The sowing device 14, the feeding base 13, the cropping claws 15, the cover plate 16 and the like constitute a sowing unit 17 for each strip. In the present embodiment, two sowing units 17 are arranged in the left-right direction at substantially equal intervals, and the sowing unit 9 is formed from the two sowing units 17.

  An operation unit 10 is formed between the rear portions of the body frames 2 and 3 behind the seeding unit 9. The operation unit 10 includes upper and lower arm members 35 and 36, and includes a frontal portal handle arm 34 that is erected substantially vertically upward, and auxiliary handles 25 and 25.

  In the handle arm 34, the lower arm member 36 of the handle arm 34 is provided so that left and right vertical arm portions 36b and 36b are erected so as to be able to rotate back and forth substantially vertically above the machine body frames 2 and 3 behind the roller shaft 8. At the same time, the upper ends of the vertical arm portions 36b and 36b are connected by a horizontal arm portion 36a.

  A pair of left and right stays 41 and 41 project forward from the upper and lower middle portions of the vertical arm portions 36b and 36b, and screw holes (not shown) are opened at the front end portions of the stays 41 and 41. And nuts 42a and 42a are fixed to the outer surface coaxially. On the other hand, the lower ends of a pair of left and right handle tilt adjustment frames 40, 40 are connected to the machine body frames 2, 3 between the roller shaft 8 and the vertical positions of the vertical arm portions 36b, 36b, respectively, so as to be able to rotate back and forth. Long holes 40a and 40a are provided at the upper ends of the handle tilt adjustment frames 40 and 40, and bolts 42b and 42b are fastened to the nut 42a from the inside so as to pass through the long holes 40a and 40a. It has been.

  As a result, the bolts 42b and 42b are loosened and slid along the long holes 40a and 40a, the vertical arm portions 36b and 36b are tilted in the front-rear direction, and then the bolts 42 and 42 are tightened again to thereby fix the handle arm 34. Is adjusted to a predetermined front-rear inclination angle.

  In the upper arm member 35, the vertical arm portions 35b and 35b constituting the upper arm member 35 are inserted from above into the vertical arm portions 36b and 36b that are pipe-shaped and open at the upper end, and the vertical arm portion 35b. -The upper end of 35b is connected by the holding | maintenance arm part 35a.

  Knob screws 43 and 43 are screwed into the front end portions of the vertical arm portions 36b and 36b of the lower arm member 36 from the front. As the knob screws 43 and 43 are inserted, the knob screws 43 and 43 are inserted. The upper arm member 35 is fastened and fixed to the lower arm member 36 by pressing the rear end against the front surface of the vertical arm portions 35 b and 35 b of the upper arm member 35.

  As a result, the knob screw 43 is loosened, the upper arm member 35 is slid along the lower arm member 36 and moved up and down, and then the knob screw 43 is tightened again to bring the handle arm 34 to a predetermined height. I try to adjust it.

  Accordingly, the front and rear inclination angle and height of the handle arm 34 are changed steplessly, and the handle arm 34 is set in a state suitable for holding the handle arm 34 with the holding arm portion 35a and pushing it forward by human power during the sowing operation. The pushing operation can be performed with a small amount of human power, the work load of the sowing work is reduced, and the workability is improved.

  The auxiliary handle 25 includes a pipe-shaped main body portion 25a, a gripping portion 25b formed in the rear half of the main body portion 25a, and a pipe-shaped member fixed to the front end of the main body portion 25a and having an axial center in the vertical direction. The sliding portion 25c is externally fitted to the upper and lower middle portions of the vertical arm portions 35b and 35b of the upper arm member 35.

  A knob screw 52 is screwed into the outer portion of the sliding portion 25c from the outer side, and the tip of the knob screw 52 is brought into contact with the outer surface of the vertical arm portion 35b as the knob screw 52 advances. By pressing, the auxiliary handle 25 is fastened and fixed to the vertical arm portion 35b.

  As a result, the knob screw 52 is loosened, the sliding portion 25c is slid along the upper arm member 35 and moved up and down, and then the knob screw 52 is tightened again, whereby the height of the auxiliary handle 25 is set to a predetermined height. I try to adjust it.

  An operation using such an auxiliary handle 25, for example, a direction changing operation is performed as follows. First, by holding and pulling up the auxiliary handle 25, the pressure reducing roller 6 is raised with the driving roller 5 as a fulcrum, the seeding machine 1 is tilted forward from the horizontal state, and the pressure reducing roller 6 is lifted from the field, and in this state The seeding machine 1 is rotated 180 degrees by horizontally moving the auxiliary handle 25 with the driving roller 5 as a fulcrum. Thereafter, the auxiliary handle 25 is lowered, the pressure reducing roller 6 is lowered with the driving roller 5 as a fulcrum, and the seeding machine 1 is returned to the horizontal position to complete the direction changing operation.

  At this time, since the handle arm 34 is erected substantially vertically upward, the auxiliary handle 25 is deployed substantially horizontally, so that the operator can easily grasp the grip portion 25b, and the pressure-reducing roller 6 described above can be easily gripped. The human power required for ascending, turning and descending operations is small. For this reason, in addition to the above-described direction changing work, the work load is reduced in the step-over work, and the workability can be greatly improved.

  An input shaft 23 is rotatably mounted between the support bars 11 and 12 between the front and rear center portions of the body frames 2 and 3, and the left and right middle portions of the input shaft 23 are Then, it is interlocked with the feeding shaft 24 of the seeding device 14 via a transmission path in the feeding base 13 which will be described in detail later. On the other hand, the right end of the input shaft 23 is linked to the roller shaft 8 of the pressure reducing roller 6 via a power transmission path 18.

  In the power transmission path 18, a transmission case 19 is fixed to the outer surface of the right body frame 3, the right end of the input shaft 23 is inserted into the front portion of the transmission case 19, and a sprocket 21 is connected to the right end. The outer fitting is fixed. Similarly, the right end of the roller shaft 8 is also inserted into the rear portion of the transmission case 19, and a sprocket 20 is fitted and fixed to the right end, and a chain 22 is wound between the sprocket 20 and the sprocket 21. It has been turned.

  Thereby, when the seeding machine 1 proceeds, the pressure reducing roller 6 rotates, and the rotational power of the pressure reducing roller 6 is transmitted from the roller shaft 8, the sprocket 20, the chain 22, and the sprocket 21 to the input shaft 23, and the seeding device 14 The feeding shaft 24 is driven to feed seeds into the field.

  A pair of left and right support frames 28L and 28R are erected from the vicinity of the support portion of the roller shaft 7 at the front part of the body frame 2 and 3, and between the upper ends of the support frames 28L and 28R, A battery stand 29 is bridged, and a battery box 49 is placed and fixed on the battery stand 29.

  The battery box 49 contains a battery 30, a controller 50 that controls input / output of power to the battery 30, and a breaker 55 that connects and disconnects power between the controller 50 and the battery 30. The travel connected to the accelerator meter 53 and the start switch 33 provided on the grip arm portion 35a of the upper arm member 35 through the signal line 31 and incorporated in the drive roller 5 through the signal line 32 Connected to the motor 37.

  Accordingly, when the start switch 33 is operated while gripping the grip arm portion 35a of the handle arm 34, electric power is supplied from the battery 30 to the traveling motor 37 by the signal from the start switch 33, and the driving roller 5 as the front wheel is moved. The seeder 1 is driven by a motor so that the seeder 1 travels, and a front center-of-gravity / front wheel drive type seeder 1 is configured in which both the heavy traveling motor 37 and the battery 30 are concentrated on the drive roller 5 side. The

  Therefore, even if there is a step in front of the machine body, when the heavy driving roller 5 with a heavy load is rotated and driven while the handlebar 34 is gripped and the rear wheel is lifted, The drive roller 5 can be driven and advanced along the surface, and the seeder 1 can easily get over the step without using an actuator and requiring no special operation.

  A horizontal frame 54 is installed between the machine frames 2 and 3 immediately after the drive roller 5, and a front portal-type handle 51 for carrying and maintenance work is provided from the horizontal frame 54. It protrudes upward.

Next, the seeding device 14, the feeding base 13 for attaching and detaching the seeding device 14, and the attaching / detaching structure thereof will be described with reference to FIGS.
Of these, the sowing apparatus 14 is configured such that a feeding roll 74 is inserted into the lower opening of the seed case 73 whose upper and lower sides are opened obliquely from the lower rear side, and then the lower feeding case 91 is covered.

  The seed case 73 is composed of a hopper portion 73a for storing the seed 93 therein so that the upper surface is covered with a lid body 92, and an upper feeding case portion 73b below the hopper portion 73a. From the case portion 73b and the lower feeding case 91, the feeding portion 14a for feeding the seed 93 by a predetermined amount is formed. Then, a pair of left and right convex front locking portions 14b and 14b are projected to the left and right outwards at the front lower end of the feeding portion 14a, while a convex shape is formed at the rear lower end of the feeding portion 14a. A rear locking portion 14c protrudes rearward.

  In the feeding roll 74, a shaft hole 74b is drilled in the left-right direction, and the shaft hole 74b is disposed on substantially the same axis as the through-hole 73c drilled in the left-right direction at the bottom of the seed case 73. The feeding shaft 24 is rotatably inserted into the through hole 73c and is non-rotatably fitted into the shaft hole 74b. One end of the feeding shaft 24 protrudes leftward from the inside of the seed case 73, and a driven gear 75 is fitted and fixed to the end thereof. Further, recesses 74a are formed at substantially equal intervals in the circumferential direction on the outer peripheral surface of the feeding roll 74, and the seeds 93 enter the recesses 74a.

  As a result, when the feeding roll 74 rotates in the direction of the arrow 94, the seed 93 entering the recess 74a from the hopper 73a is rotated and conveyed while being held in the recess 74a. In the middle of the conveyance, seeds 93 and the like overflowing from the recess 74a are removed by the brush 56 interposed between the upper feeding case portion 73b and the lower feeding case 91. Then, when the seed 93 in the concave portion 74a is conveyed to a predetermined dropping position, the seed 93 is dropped into the feeding base 13 from the feeding port 91a opened at the lower portion of the lower feeding case 91.

  Further, the feeding base 13 for attaching and detaching the sowing device 14 having such a configuration has left and right side plates 77 and 78, and a front-side upside-down L-shaped covering the front portions of the side plates 77 and 78 with the front surface portion 76a and the upper surface portion 76b. And a gear case 79 having a U-shape in plan view that is fastened and fixed by a plurality of bolts 88 provided in front of and behind the left outer surface of the left side plate 77.

  Of the side plates 77 and 78, shaft holes 77a and 78a each having an axial center in the left and right direction are perforated in front portions thereof, and the front support bar 11 is inserted into the shaft holes 77a and 78a. By fixing the front support bar 11 with a knob screw 86 provided on the upper surface portion 76b of the front cover 76, the front portions of the side plates 77 and 78 are fixed to the front support bar 11 so as to be slidable in the left-right direction. On the other hand, the rear edges of the side plates 77 and 78 are formed with recesses 77b and 78b that are opened rearward. By inserting the rear support bar 12 into the recesses 77b and 78b, the side plates 77 and 78 are inserted. The rear part is fixed to the rear support bar 12 so that it can be manually operated from side to side. As a result, the feeding base 13 can be supported on the machine body frames 2 and 3 via the front and rear support bars 11 and 12 so that the left and right positions can be adjusted.

  Further, in the side plates 77 and 78, convex holding upper plates 83 and 83 that are downwardly convex in a side view are attached and fixed to the inner side surfaces of the front half portions, and the rear upper and lower plates 83 and 83 are obliquely inclined. At the lower position, plate-like sandwiching lower plate portions 77c and 78c project inwardly from the lower edges of the side plates 77 and 78 inwardly, and the sandwiching lower plate portions 77c and 78c Front clamping spaces 89 and 89 are provided between the outer peripheral inclined surfaces 83a and 83a at the rear and lower portions of the upper plates 83 and 83, respectively.

  On the other hand, between the rear portions of the side plates 77 and 78, a rear sandwiching body 80 having a U-shape in rear view is interposed. The rear sandwiching body 80 includes a bottom plate portion 80a that is U-shaped in a rear view, which is laterally disposed between the side plates 77 and 78, and a left and right end portion of the bottom plate portion 80a. A pair of left and right side plate portions 80b and 80b that are open to the side, and a back plate portion 80c that connects the lower back surfaces of the side plate portions 80b and 80b.

The elastic guide mechanism 27 according to the present invention is provided on the feeding base 13 behind the rear clamping body 80.
The elastic guide body 81 constituting the elastic guide mechanism 27 is formed of an elastic spring member, and is bent to support the spring portion 59, the gripping spring corner portion 60, and the biasing spring portion 61 in order from the rear. Is formed.

  Of these, the lower part of the support spring part 59 is bifurcated, and each of the branch parts 59a and 59b is provided with vertically elongated slots 59c and 59d, and the bolts 62 are connected to the elongated holes 59c and 59c. 59d is inserted through the screw holes of the plate-like support portions 77d and 78d. The support portions 77d and 78d are formed so as to protrude inward from the lower half of the rear edge of the side plates 77 and 78. As a result, the bolts 62 and 62 are loosened, the support spring portion 59 is slid up and down along the long holes 59c and 59d, and then the bolts 62 and 62 are tightened again, whereby the elastic guide body 81 is predetermined. The height can be adjusted.

  The gripping spring corner portion 60 includes an upward slope portion 60a that extends obliquely upward and forward from the upper end edge of the support spring portion 59, and a downward slope portion 60b that extends obliquely downward and forward from the upper end edge of the upward slope portion 60a. ing. As a result, both the slope portions 60a and 60b are gripped and pushed by fingers from front and rear, and the entire elastic guide body 81 is elastically deformed, so that the elastic guide body 81 is moved back and forth using the lower portion of the support spring portion 59 as a fulcrum. To be able to lean on.

  The biasing spring portion 61 includes an upper sliding surface portion 61a that is suspended from the lower end edge of the downward slope portion 60b, and a lower sliding surface portion 61b that extends obliquely downward and forward from the lower end edge of the upper sliding surface portion 61a. It is configured. The lower end portion of the lower sliding surface portion 61b is elastically biased to the lower edge of the back plate portion 80c of the rear holding body 80.

  In such an elastic guide body 81, a regulating member 63 is fastened and fixed by a bolt 44 at a substantially vertical center portion of the lower sliding surface portion 61b. The regulating member 63 is formed in a convex shape with a triangular shape in a side view, and a locking surface portion 63b perpendicular to the lower sliding surface portion 61b is formed at a lower portion thereof, while an upper portion of the regulating member 63 is formed. A sliding slope portion 63a is formed, and the sliding slope portion 63a is not rounded at the upper edge thereof so that no step is generated between the lower sliding surface portion 61b. A rear clamping space 90 is provided between the locking surface portion 63 b of the regulating member 63 and the bottom plate portion 80 a of the rear clamping body 80.

  Further, in the front cover 76, the knob screw 86 is provided at the right front portion of the upper surface portion 76b. A through hole 76c is opened at a substantially central portion in plan view of the upper surface portion 76b, and the through hole 76c is formed in the through hole 76c. The upper end of a pipe-shaped mounting boss portion 87 having an axial center in the vertical direction is fitted and fixed. A fixing hole 87a is formed in the front portion of the mounting boss portion 87 in the radial direction. After a support pole 57 standing from the grooving claw 15 is inserted into the mounting boss portion 87 from below, a predetermined height is set. At this position, the fixing bolt 58 provided on the front surface portion 76a is inserted from the front into the fixing hole 87a to fix the support pole 57, so that the height of the grooving claw 15 can be adjusted below the feeding base 13. Fixed to.

  Further, in the gear case 79, the left side surface bulges to the left, and the upper part thereof opens upward except for the front end portion covered with the upper lid 45, and the left outer side of the seeding device 14 is opened. A driven gear 75 arranged in the opposite direction is inserted into the gear case 79 from above through the upper opening 79a.

  A drive gear 82 is housed in the inner space of the front half of the gear case 79 partially covered with the upper lid 45, and the drive gear 82 can mesh with the driven gear 75 in the gear case 79. At a certain position, the input shaft 23 is externally fitted and fixed.

Next, a procedure for attaching and detaching the seeding device 14 using the elastic guide mechanism 27 will be described with reference to FIGS.
When the seeding device is mounted, the seeding device 14 is tilted forward as indicated by an arrow 100 and lowered in the direction of the arrow 96 in a forward tilted posture so that the left and right front locking portions 14b and 14b of the feeding portion 14a are Between the left and right side plates 77 and 78, it is inserted into the space below and below the sandwiching upper plates 83 and 83. Then, the rear locking portion 14c of the feeding portion 14a passes from the downward inclined surface portion 60b of the gripping spring corner portion 60 through the vertical sliding surface portions 61a and 61b of the biasing spring portion 61, and the sliding inclined surface of the regulating member 63. It slides to 63a and moves to a position 64, and the restricting member 63 is pushed backward to elastically deform the biasing spring portion 61 from a position 66 to a position 67.

  Subsequently, while the front locking portions 14b and 14b are advanced in the direction of the arrow 97 as they are, the seeding device 14 is gradually returned to the horizontal direction and fitted into the front clamping spaces 89 and 89 on the feeding base 13 side. At the same time, the rear locking portion 14 c is moved from the position 64 to the position 65 while being slid on the sliding slope portion 63 a of the restricting member 63 and is fitted into the rear clamping space 90. Thereby, the feeding part 14a can be mounted in the feeding base 13.

  During this time, the rear locking portion 14c is always urged elastically by the elastic guide body 81 toward the sandwiching upper plates 83 and 83 and the sandwiching lower plates 77c and 78c located at the front. In addition, there is no gap between the rear locking portion 14c and the downward inclined surface portion 60b, the upper and lower sliding surface portions 61a and 61b, and the sliding inclined surface portion 63a, and the seeding device 14 is moved forward. There is no need to fit the rear locking portion 14c into the rear clamping space 90 while pressing the head to the rear. Further, as described above, since there is no step between the lower sliding surface portion 61b and the sliding slope portion 63a, the rear locking portion 14c is not locked by the step during sliding. .

  Then, the locking surface portion 63b of the regulating member 63 is always elastically pressed from above on the rear locking portion 14c fitted in the rear clamping space 90, and the locking surface portion 63b is mounted while the seeding device is mounted. Therefore, the rear locking portion 14c is prevented from being detached from the rear clamping space 90, and can be reliably held in the rear clamping space 90.

  At the same time as the seeding device is mounted, the driven gear 75 on the feeding portion 14 a side is inserted into the gear case 79 and meshed with the drive gear 82 in the gear case 79. Thereby, the rotational power from the pressure reducing roller 6 transmitted to the input shaft 23 via the power transmission path 18 as shown in FIG. 2 is transmitted through the transmission path composed of the drive gear 82 and the driven gear 75. It is transmitted to the feeding shaft 24.

  At the time of detaching the seeding device, both the slope portions 60a and 60b of the gripping spring corner portion 60 are gripped by fingers from the front and rear and pushed backward, the elastic guide body 81 is tilted rearward, and the biasing spring portion 61 is moved to the position 67. To a position 68. In this state, the seeding device 14 is moved forward in the direction of the arrow 98 and gradually tilted forward so that the rear locking portion 14c of the feeding portion 14a is not interfered with the restricting member 63, and the seeding device 14 is moved in the direction of the arrow 99. By pulling up in the direction, the front locking portions 14b and 14b and the rear locking portion 14c are detached from the front clamping space 89 and 89 and the rear clamping space 90, respectively. Thereby, the feeding part 14a can be removed from the feeding base 13.

  That is, a seeding unit 17 including a seeding device 14 is arranged in the left-right direction between a driving roller 5 as a front wheel and a pressure-reducing roller 6 as a rear wheel arranged in front of and behind the body frame 2. 14 is provided so as to be attachable to and detachable from a frame-like feeding base 13 provided in the machine body frame 2 and 3, and a drive gear 82 in the feeding base 13 is provided with a driven gear on the feeding portion 14a side. In the seeding machine 1 that meshes 75 and drives the feeding portion 14a, the feeding base 13 holds the front locking portions 14b and 14b and the rear locking portion 14c that are locking portions of the feeding portion 14a. By inserting the upper clamping plates 83 and 83, the lower clamping plate portions 77c and 78c, the rear clamping member 80, and the feeding base 14 into the feeding base 13 from above, the front locking portions. 14b 4b, the rear locking portion 14c is connected to one of the clamping upper plates 83 and 83, the clamping lower plates 77c and 78c, and the rear clamping member 80. In this embodiment, the clamping upper plates 83 and 83, and the clamping lower plate While being elastically biased toward the portions 77c and 78c, the holding upper plates 83 and 83, the other holding members disposed opposite to the holding lower plate portions 77c and 78c, and the rear holding member 80 in this embodiment are slid. The elastic guide mechanism 27 is provided so that the feeding portion 14a is not detached from the sliding surface in a state of being in close contact with the sliding surface by an elastic biasing force, and only one operation of downward insertion into the feeding base 13 is performed. It is possible to guide to the rear clamping body 80 stably and quickly, and the mounting workability of the seeding device 14 can be greatly improved. Further, the shape of the feeding base 13, particularly the lateral width, does not change when the feeding part 14 a is attached / detached, and even when a plurality of sowing units 17 including the sowing device 14 are arranged in the left-right direction, they are adjacent to each other. The mutual interference between the sowing units 17 can be prevented, the spacing between the sowing units 17 is not increased, the enlargement of the machine body and the limitation of the distance between the stripes are avoided, the turning performance is improved, and the work load is reduced. Reduction and sowing performance can be improved.

  Further, the elastic guide mechanism 27 is provided with a downward inclined surface portion 60b, which is a sliding surface portion that stands up from the vicinity of the rear clamping body 80, which is the other clamping body, and extends in the vertical direction, and vertical sliding surface portions 61a and 61b. In addition to the elastic guide body 81 having a sliding function, a sliding function for sliding the rear locking portion 14c, which is a locking portion, up to the rear clamping body 80 in the upper and lower middle portions of the elastic guide body 81, and the rear locking portion Since the regulating member 63 having a holding function for preventing the rear locking portion 14c from being detached from the rear clamping space 90, which is a clamping space in 14c, is provided, a plurality of functions are provided on the regulating member 63 which is a single member. It is possible to reduce the number of parts, and it is possible to reduce the cost of parts and improve the ease of assembly and maintenance.

  In addition, the elastic guide body 81 is made of an elastic spring member, and has a support spring portion 59 that extends upward by connecting a lower portion to the feed base 13, and a rear lock that is the lock portion. An urging spring portion 61 for urging the portion 14c; and between the urging spring portion 61 and the support spring portion 59, when removing the feeding portion 14a, gripping and separating from the rear locking portion 14c; In this embodiment, the elastic guide body 81 is provided with a simple structure of an integral spring member because it is provided with the upside-down V-shaped gripping spring corner portion 60 that is pushed backward and elastically deforms the elastic guide body 81. In addition, the gripping spring corner portion 60 can be formed by utilizing the connecting portion between the support spring portion 59 and the urging spring portion 61, and the cost of parts can be further reduced.

  Further, the restricting member 63 includes a locking surface portion 63b that presses the upper portion of the rear locking portion 14c that is the locking portion from above, and a lower sliding surface portion 61b that is a sliding surface portion of the biasing spring portion 61. Since the rear inclined portion 14c includes the sliding slope portion 63a that is continuous without a step, the rear locking portion 14c is caught by the step in the middle of sliding from the lower sliding surface portion 61b of the elastic guide body 81 to the sliding slope portion 63a of the regulating member 63. The feeding portion 14a can be smoothly guided to the rear clamping body 80, and the mounting workability of the seeding device 1 can be further improved.

  In the present invention, a seeding unit including a seeding device is arranged in the left-right direction between a front wheel and a rear wheel arranged before and after the body frame, and a feeding portion of the seeding device is a frame shape provided on the body frame. It can be applied to all seeding machines that can be attached to and detached from the feeding base, and the driving gear in the feeding base is engaged with the driven gear on the feeding portion side to drive the feeding portion.

1 Seeding machine 2.3 Machine frame 5 Drive roller (front wheel)
6 Squeezing roller (rear wheel)
13 Feeding base 14 Sowing device 14a Feeding part 14b Front locking part (locking part)
14c Rear locking part (locking part)
17 seeding unit 27 elastic guide mechanism 59 support spring part 60 gripping spring corner part 61 biasing spring part 61b lower sliding surface part (sliding surface part)
63 Restricting member 63a Sliding slope part 63b Locking surface part 75 Driven gear 77c / 78c Holding lower plate part (one holding body)
80 Rear clamping body (other clamping body)
81 elastic guide body 82 drive gear 83 clamping upper plate (one clamping body)
90 Rear clamping space (Clamping space)

Claims (4)

  A seeding unit including a seeding device is arranged in a horizontal direction between a front wheel and a rear wheel arranged in front and rear of the machine body frame, and a feeding portion of the seeding device is a frame-shaped feeding base provided in the machine frame. In the seeding machine which is provided so as to be attachable / detachable and meshes the driven gear on the feeding portion side with the driving gear in the feeding base to drive the feeding portion, the feeding base has a relationship with the feeding portion. By inserting a plurality of clamping bodies that clamp the stoppers and inserting the feeding part into the feeding base from above, the locking part is elastically biased toward one of the clamping bodies. However, a seeding machine comprising: an elastic guide mechanism that slides and guides the other sandwiching body disposed opposite to the one sandwiching body.   The elastic guide mechanism is provided with a sliding surface portion that stands up from the vicinity of the other sandwiching body and extends in the vertical direction, and in addition to the elastic guide body having elasticity, The regulating member having both a sliding function for sliding the locking portion and a holding function for preventing the locking portion from being detached from the holding space in the other holding body is provided. Sowing machine.   The elastic guide body is formed of an elastic spring member having elasticity, a support spring portion that extends downward by connecting a lower portion to the feeding base, a biasing spring portion that biases the locking portion, Between the urging spring part and the support spring part, when the feeding part is removed, it is gripped and pushed away from the locking part in the separating direction to elastically deform the elastic guide body. The seeder according to claim 2, further comprising a spring corner. The regulating member, according to claim 3, characterized in that it comprises a locking surface portion which presses from above an upper part of the locking portion, and a sliding slope portion extending smoothly and continuously in the sliding surface of the biasing spring portion A seeder as described in 1.

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