JP2006345733A - Sowing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the adjustment and maintenance of a delivery part to deliver a granular material. <P>SOLUTION: The sowing machine 1 is provided with a machine body 4 supported in a manner freely movable on a field H and a pair of delivery parts 36 placed at the right and left sides of the machine body 4 and delivering seeds as the granular material. Each delivery part 36 is supported by the body 4 at each side of the body in a cantilevered manner and is removable to the side opposite to the machine. The attaching position of each delivery part 36 is adjustable in the lateral direction of the machine body 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a seeder for seeding granular materials such as seeds and fertilizers by a certain amount or by spot seeding.

  As a conventional seeder, a seeder 81 described in Patent Document 1 is exemplified. As shown in FIG. 7, the seeder 81 includes a machine body 84 including a pair of left and right side frames 84a and 84a, and a horizontal frame 84b connecting the both side frames 84a and 84a. Both side frames 84a, 84a are extended in the front-rear direction, and between the both side frames 84a, 84a, a grounding wheel 82, a seeding device 85, a grooving device (not shown), a cover plate 100, a pressure reducing wheel 83, etc. Each functional element part is supported.

JP-A-9-107731

  However, since each functional element portion is disposed between the both side frames 84a and 84a, each function element portion is replaced when each functional element portion is replaced or when consumables in each functional element portion are replaced. There is a problem that it is difficult to attach and detach the element part. In particular, functional elements that rotate about a shaft extending left and right, such as a grounding wheel 82, a feeding roll (not shown) of the seeding device 85, a pressure reducing wheel 83, and the like, are supported by both side frames 84a and 84a at both ends of the shaft. Furthermore, since the shaft may be provided with a drive element (engine, motor, sprocket, gear, etc.) for rotationally driving the shaft, it is difficult to attach and detach.

In order to solve the above problems, a seeding machine of the present invention includes a machine body that is supported so as to be able to travel in a farm field, and a pair of feeding units that are arranged on both the left and right sides of the machine body to feed out the granular material,
Each feeding portion is cantilevered from the respective aircraft side to the above-mentioned aircraft body so as to be detachable to the respective aircraft body side.

  According to this configuration, since each of the feeding parts is cantilevered from the machine side to the machine body, the reaction machine side can be widely released, and the delivery part is moved to the reaction machine side. It can be easily removed, and the adjustment and maintenance of the feeding portion are facilitated. Moreover, since the said feeding part is provided in the both sides of the said body, respectively, two granular materials can be seeded simultaneously. In addition, since this structure is simple, it can be reduced in weight and can be realized at low cost. In addition, this weight reduction requires less force to advance the airframe, reduces the ground pressure of traveling means such as wheels, makes the passage marks of the traveling means shallow, makes it difficult for water to accumulate, and causes poor germination. Can be suppressed.

  Each said delivery part illustrates the aspect each supported so that the attachment position in the left-right direction of the said body could be adjusted.

  According to this structure, the space | interval of both feeding parts can be adjusted suitably according to the space | interval which seeds a granular material.

Each of the feeding portions is provided with a groove digger for forming a groove in the field below each, and extends in the left-right direction of the machine body, and is rotatably supported by a bearing provided on the machine body. Configured to input a driving force for unwinding the granular material via the drive shaft,
The drive shaft exemplifies a mode in which the shaft center is supported by the bearing with play so that the shaft center can be inclined with respect to the shaft center of the bearing.

  According to this configuration, the feeding unit receives a force relatively backward with respect to the machine body due to the resistance that the trench excavator receives from the field with the progress of the machine body, and this force is fed to the machine body. It is hung on the machine body through a part that cantilever supports the part. However, since the drive shaft is supported with play, it is possible to prevent (or hardly receive) the force from the drive shaft. Thereby, wear and damage to the bearing and the drive shaft can be prevented.

  The transmission mechanism for transmitting a driving force to the drive shaft is exemplified by a mode of being arranged at the center in the left-right direction of the airframe.

  According to this structure, it can comprise so that a driving force can be efficiently transmitted to both said feeding parts, and a weight reduction is attained.

  According to the seeder according to the present invention, there is an excellent effect that the adjustment and maintenance of the feeding portion for feeding the granular material are facilitated.

  1 to 6 show a seeder 1 as a seeder according to an embodiment of the present invention. As shown in FIGS. 1 and 2, the seeder 1 includes a machine body 4 that is movably supported on a field H by drive wheels 2 and 2 and pressure-reducing wheels 3 and 3 as front and rear wheels, A seeding unit 5 disposed on each of the left and right sides, a transmission mechanism 6 for transmitting the rotation of the drive wheel 2 to each seeding unit 5, and a handle 8 for maneuvering the body 4 are provided. And sowing seeds in the field H. In each figure, arrow F indicates the front side of the aircraft.

  The airframe 4 is formed so as to extend substantially linearly in the front-rear direction when seen in a plan view, and the rear side of the central portion thereof is bent rearward and obliquely upward.

  As shown in FIGS. 1 and 2, a front shaft 11 extending left and right is rotatably supported on the front side portion of the body 4, and both drive wheels 2 are attached to both ends of the front shaft 11. ing. Each drive wheel 2 is attached so that it cannot rotate relative to the front shaft 11 and can be attached to and detached from the non-machine side with its machine body side peripheral portion being close to the machine body 4. A plurality of lugs 2 a are arranged at predetermined intervals on the machine body side peripheral portion of each drive wheel 2 so as to prevent the drive wheels 2 from slipping when the machine body 4 travels. As described above, each drive wheel 2 is provided with a plurality of lugs 2a provided at the peripheral edge of the airframe and is attached with the peripheral edge of the airframe close to the airframe 4. The soil or the like of the farm field H that is sandwiched can be dropped by the machine body 4 as the two drive wheels 2 rotate. In particular, dirt or the like easily adheres to the lug 2 a, and the earth or the like can be dropped by the machine body 4. Further, a scraper 10 supported by the airframe 4 is provided behind the two drive wheels 2 so as to drop the dirt adhering to the peripheral surfaces of the two drive wheels 2.

  As shown in FIGS. 5 and 6 from the front side portion to the center portion in the front-rear direction of the machine body 4, the drive force of the drive wheels 2 is transmitted to the seeding unit 5 at the center in the left-right direction of the machine body 4. A transmission mechanism 6 with a speed change function is provided. The transmission mechanism 6 is attached to the front shaft 11 so as not to be relatively rotatable, and has a transmission rotating plate 12 having a plurality of concentric holes with a plurality of locking holes 12a formed at equal intervals, and a diameter of the transmission rotating plate 12 The transmission shaft 13 is rotatably supported so as to extend in the longitudinal direction and the longitudinal direction of the machine body, and is slidable in the length direction of the transmission shaft 13 and cannot be rotated relative to the circumferential direction of the transmission shaft 13. The pinion gear 14 is supported by the front side portion 13a of the transmission shaft 13 (the portion of the transmission shaft 13 facing the plate surface of the transmission rotary plate 12), meshes with the latch hole 12a, and rotates together with the transmission shaft 13. And. The front side portion 13a is rotatably supported in a direction away from the transmission rotation plate 12 by a rotation member 15 formed in an inverted U shape in a side view, and the transmission rotation plate 12 by a spring 16 as an urging means. It is biased in the direction approaching the plate surface. The rear side portion 13b of the transmission shaft 13 is provided with a pair of joint portions 17 that can be bent in directions orthogonal to each other. Each joint portion 17 has a play so that it can be slightly expanded and contracted in the length direction of the transmission shaft 13. In order to operate the speed change function of the transmission mechanism 6, the operator moves the front side portion 13 a of the transmission shaft 13 in the direction away from the speed change rotation plate 12 with one hand, thereby engaging the teeth of the pinion gear 14 with the retaining holes. 12a (see FIG. 6 (b)), and with the other hand, the position of the pinion gear 14 in the length direction of the transmission shaft 13 is changed so as to engage with the other-stage latching hole 12a. Are engaged with the retaining holes 12a (see FIG. 6A).

  As shown in FIGS. 3 and 4, a bearing 21 is disposed at the center of the body 4 in the front-rear direction so that the shaft center is directed in the left-right direction of the body 4. The part 22 is supported. The rear end portion of the transmission shaft 13 and the boss portion 22 are provided with a pair of bevel gears 23 and 24 that mesh with each other, so that the rotation of the transmission shaft 13 is transmitted to the boss portion 22. It has become. A drive shaft 25 having an outer diameter smaller than the inner diameter is loosely inserted into the boss portion 22. Then, the axial center portions of the boss portion 22 and the drive shaft 25 in the axial length direction are connected with play by the pin 26, so that the drive shaft 25 can be tilted with respect to the shaft center of the bearing 21. It is possible to support the bearing 21 with play.

  Attachment frames 27 extending in the left-right direction of the machine body are fixed to the front and rear sides of the drive shaft 25 in the machine body 4, and the sowing unit 5 is attached to the attachment frame 27.

  As shown in FIGS. 1 and 2, a leg 31 that extends obliquely downward and rearward for supporting the pressure-reducing wheel 3 is provided on the rear side of the body 4. On the front end side of the leg portion 31, a left and right rear shaft 32 that is rotatably supported is provided, and on both sides of the rear shaft 32, both pressure reducing wheels 3 are respectively attached. Further, a scraper 33 supported on the front end side of the leg portion 31 is provided behind the two pressure-reducing wheels 3 so as to drop dirt or the like adhering to the peripheral surfaces of both pressure-reducing wheels 3.

  As shown in FIGS. 1 to 4, the sowing unit 5 includes a base frame part 35 formed in a substantially frame shape in plan view, and a pair of lower parts mounted in the base frame part to feed out seeds as granular bodies. A pair of a feeding part 36 and a pair attached to the lower side of the base frame part 35 to form a groove for filling seeds fed from the feeding part 36 in the field H and to cover the soil by bringing soil into the groove after sowing And a trench excavation covering soil portion 37.

  The base frame portion 35 is formed in a substantially frame shape by a front frame piece 35a, a rear frame piece 35b, an inner frame piece 35c, and an outer frame piece 35d. The front frame piece 35a, the rear frame piece 35b, and the inner frame piece 35c is integrated. As shown in FIG. 3, the outer frame piece 35d is supported by the rear frame piece 35b so that it can be opened and closed, and the front end part of the outer frame piece 35d is engaged with the front frame piece 35a. A hole 39 through which the drive shaft 25 is inserted is formed in the inner frame piece 35c and the outer frame piece 35d. The hole 39 of the outer frame piece 35d opens and closes even when the drive shaft 25 penetrates. It is a long hole extending forward so that it is possible. Then, the outer frame piece 35d is opened, and the lower portion of the feeding portion 36 is mounted in the base frame portion.

  A cylindrical body 41 having a hole 41a into which the front mounting frame 27 is slidably fitted is attached to the front frame piece 35a, and the cylindrical body 41 is fixed to the mounting frame 27 with fixing bolts 42. It has become. The rear frame piece 35b is provided with a projecting piece 43 extending rearward in which a hole 43a into which the rear mounting frame 27 is slidably fitted is formed. In this way, the seeding unit 5 is cantilevered from the machine body side to the machine body 4 so as to be detachable from the machine body side, and the mounting position of the machine body 4 in the left-right direction is adjusted as shown in FIGS. It is possible.

  Further, the front frame piece 35a is provided with a cylindrical body 44 having a hole 44a in which an upward mounting pole 45 protruding from the groove covering soil portion 37 is slidably fitted, and is inserted into the hole 44a. The mounting pole 45 is fixed by a fixing screw 46 so that the vertical position can be adjusted.

  The feeding unit 36 has a built-in feeding roll 52 as a feeding unit for feeding seeds in the seed hopper 51. Gears 54 and 55 that mesh with each other are attached to the front ends of the roll shaft 53 and the drive shaft 25 of the feeding roll 52 on the side opposite to the machine body. The roll shaft side gear 54 is detachably attached to the roll shaft 53 with screws 56. The gear 55 on the drive shaft 25 side is mounted on the drive shaft 25 so as to be slidable in the axial direction of the drive shaft 25 and not rotatable relative to the circumferential direction of the drive shaft 25 and detachable. Both sides in the axial length direction are positioned by positioning members 57 and 58 provided respectively on the frame piece 35c and the outer frame piece 35d. As shown in FIGS. 1, 3, and 4, a cylindrical body 61 is attached to the seed outlet of the feeding portion 36 to prevent the seed from being biased. The cylindrical body 61 is provided in an oblique shape so that the inner surface of the rear cylindrical wall 61a faces forward and obliquely upward so that the cylindrical hole becomes narrower as it goes down, and the rear cylindrical wall 61a The plurality of holes 61c through which seeds can pass are arranged without deviation. Then, the seed falling from the seed outlet passes through the hole 61c of the cylinder wall 61a or passes through the cylinder hole 61b on the lower side of the cylinder 61, so that it can be sown in the field H without any bias. Yes.

  The ditching covering soil portion 37 is erected on a ditching device 63 formed in a boat shape, a earthing plate 64 attached to the rear side of the ditching device 63, and a front upper end portion of the ditching device 63. A mounting pole 45 to be inserted into the cylindrical body 44 of the frame portion 35 is provided.

  According to the sowing machine 1 of the present example configured as described above, each seeding unit 5 provided with the feeding portion 36 is cantilevered from the machine body side to the machine body 4, so that the opposite machine body side is widened. It can be released, the seeding unit 5 can be easily removed to the opposite side, and the adjustment and maintenance of each part of the seeding unit 5 are facilitated. Moreover, since the seeding unit 5 is provided on each side of the machine body 4, two granular materials can be seeded simultaneously. In addition, since this structure is simple, it can be reduced in weight and can be realized at low cost. In addition, this weight reduction requires less force to advance the vehicle body 4, reduces the ground pressure of the drive wheels 2, 2 and the pressure-reducing wheels 3, 3 as traveling means, and the passage marks of the traveling means are depressed. It is shallow and it is difficult for water to accumulate, and poor germination can be suppressed.

  In addition, each sowing unit 5 provided with the feeding portion 36 is supported so that the mounting position in the left-right direction of the machine body 4 can be adjusted, so that both the sowing units 5 can be adjusted according to the interval between which the granular material is seeded. The interval can be adjusted as appropriate.

  In addition, due to the resistance that the trench excavator 63 receives from the field H as the machine body 4 progresses, the feeding portion 36 also receives a force toward the rear relative to the machine body 4, and this force mainly acts on the mounting frame 27. Through the aircraft 4 via. However, since the drive shaft 25 is supported with play, it is possible to prevent (or make it difficult for) the drive shaft 25 to receive the force. Thereby, abrasion and damage to the bearing 21, the drive shaft 25, etc. can be prevented.

  Further, since the transmission mechanism 6 for transmitting the driving force to the driving shaft 25 is disposed at the center in the left-right direction of the machine body 4, the driving force is efficiently transmitted to the feeding portion 36 of both the sowing units 5. Thus, the weight can be reduced.

In addition, this invention is not limited to the said embodiment, For example, it can also be suitably changed and embodied as follows, for example in the range which does not deviate from the meaning of invention.
(1) Change the mechanical configuration of the transmission mechanism 6 as appropriate.
(2) The traveling means (the drive wheels 2, 2 and / or the pressure-reducing wheels 3, 3 are configured to be driven by a prime mover.

It is a side view of a seeder as a seeder concerning one embodiment which materialized the present invention. It is a top view of the seeder. It is the III-III sectional view taken on the line of FIG. 1, and is a figure which shows the state which narrowed the space | interval of a pair of sowing unit most. It is sectional drawing similar to FIG. 3, and is a figure which shows the state which extended the space | interval of a pair of seeding unit most. It is the VV sectional view taken on the line of FIG. FIG. 6 is a sectional view taken along line VI-VI in FIG. 5. It is a top view which shows the conventional seeder.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sowing machine 2 Drive wheel 3 Pressure-reducing wheel 4 Machine body 5 Seeding unit 6 Transmission mechanism 8 Handle 21 Bearing 22 Boss part 25 Drive shaft 26 Pin 27 Mounting frame 36 Feeding part 37 Groove covering part 63 Groove tool 64 Digging board H Field

Claims (4)

A machine body that is supported so as to be able to travel in the field, and a pair of feeding units that are respectively arranged on the left and right sides of the machine body to feed out the granular material;
Each said feeding part is a seeding machine which is cantilever-supported by the said airframe from each airframe side so that removal to each anti-airframe side is possible.   The seeding machine according to claim 1, wherein each of the feeding parts is supported so that an attachment position in the left-right direction of the machine body can be adjusted. Each of the feeding portions is provided with a groove digger for forming a groove in the field below each, and extends in the left-right direction of the machine body, and is rotatably supported by a bearing provided on the machine body. Configured to input a driving force for unwinding the granular material via the drive shaft,
The seeding machine according to claim 1 or 2, wherein the drive shaft is supported by the bearing with play so that the shaft center thereof can be inclined with respect to the shaft center of the bearing.   The seeding machine according to any one of claims 1 to 3, wherein a transmission mechanism for transmitting a driving force to the driving shaft is disposed at a center in the left-right direction of the machine body.

Images