JP6653523B2 - Farm work machine - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an agricultural work machine that performs an operation of sowing an object to be sown in a field.

  BACKGROUND ART Conventionally, for example, an agricultural working machine described in Patent Literature 1 below is known.

  This conventional agricultural work machine includes a body connected to the rear of a tractor, a tank body (fertilizer hopper, seed hopper) which is detachably provided on the body and stores seeds (fertilizer, seeds), and Feeding means for feeding an in-plant material.

JP-A-10-286003

  However, in the above-mentioned conventional agricultural working machine, for example, when cleaning the feeding means, it is necessary to remove the tank body from the machine body, and there is a problem that the burden on the operator is large.

  For example, if it is difficult to remove the tank body and cleaning of the feeding means is insufficient, the feeding means may be deteriorated by residual fertilizer or the like.

  The present invention has been made in view of such a point, and an object of the present invention is to provide an agricultural work machine capable of reducing a burden on an operator.

請 Motomeko 1 agricultural machine according is an agricultural machine for performing the work of sow be plated material in the field, the fuselage having a tank mounting portion, provided in the body, the steps of the operator rides, the tank attachment A tank body rotatably mounted between the first position and the second position to store the seeds, and a seed body in the tank body when the tank body is located at the first position. A dispensing means for dispensing, and a driving means for driving the dispensing means, and when the tank body is located at the second position, the worker riding on the step can visually observe the seeds in the dispensing means. Wherein the feeding means has a rotating shaft and a feeding roll through which the rotating shaft is removably inserted, and the driving means has a sprocket detachably attached to an end of the rotating shaft. The rotation axis is Utilizing the shaft hole portion formed in the sprocket, in which has a removable from to the feed roll.

  According to the present invention, the tank body is mounted on the tank mounting portion of the body so as to be rotatable between the first position and the second position. The load on the worker can be reduced because the seeds in the feeding means can be visually checked.

It is a side view of the agricultural working machine concerning one embodiment of the present invention. FIG. 2 is a plan view of the agricultural working machine. It is a side view of the tank body of an agricultural working machine same as the above. It is a side view in the state where the same tank body was lifted. It is a perspective view of the state which lifted the tank body same as the above. It is a perspective view which shows the drive means of an agricultural working machine same as the above. It is a disassembled perspective view which shows the drive means of the agricultural working machine same as the above. (A) is an explanatory view of the agricultural working machine, and (b) is an explanatory view of a comparative example.

  An embodiment of the present invention will be described with reference to FIGS.

  1 and 2, reference numeral 1 denotes an agricultural work machine, which is connected to a rear portion of a tractor (not shown), for example, a traveling vehicle, and moves forward (in the traveling direction) by traveling of the tractor. This is a multi-row type non-tilling sowing machine that performs an operation of sowing seeds (for example, fertilizer and seeds) in a field (fertilizer application and seeding operation). The agricultural working machine 1 can also perform a sowing operation of sowing only seeds in a field without sowing fertilizer.

  The agricultural work machine 1 includes a machine body 2 detachably connected to a three-point link (a farm work machine elevating unit) at the rear of a tractor (not shown).

  An input shaft 4 in the front-rear direction is rotatably provided on a shaft support 3 at the center in the left-right direction at the front of the body 2. The input shaft 4 is connected to a PTO shaft of a tractor (not shown) via a transmission joint.

  At a plurality of locations in the front part of the body 2 spaced apart in the left-right direction, groove forming means 6 for forming a linear sowing groove along the traveling direction in the field is provided.

  Each groove forming means 6 has a chain case 7 which is a transmission case rotatable in a vertical direction, and a lower end of the chain case 7 is rotated by a power from the input shaft 4 in a predetermined direction while rotating in a field. A disc-shaped groove forming disk 8 that forms a sowing groove is rotatably provided. A groove forming disk cover 9 is disposed above the groove forming disk 8, and a grounding wheel 10 for setting a groove depth is disposed beside the groove forming disk 8. In addition, the ground contact wheel 10 rotates in a predetermined direction by a force received from the field in a state where the ground wheel 10 is in contact with the field.

  Also, the agricultural work machine 1 includes a sowing material 11 in a sowing groove formed in a field by the groove forming means 6, that is, a sowing means 11 for sowing fertilizer and seeds, and a sowing material sowed by the sowing means 11. A crushing wheel 12 for crushing the covering soil, and a portion near the front of the crushing wheel 12 for scraping and removing the soil attached to the outer peripheral surface of the crushing wheel 12 and using the removed soil as a covering soil for a seed. And soil removing means 13 for dropping the soil.

  Each crushing wheel 12 has a pair of left and right crushing wheel members 16 arranged in a V shape when viewed from the front. Each pressure-reducing wheel member 16 is rotatably mounted on a lower end of a mounting arm 17 via a shaft 18. Each soil removing means 13 has a pair of left and right plate-shaped scrapers 19 for scraping soil adhering to the outer peripheral surface of the pressure-reducing wheel member 16. Each of the scrapers 19 is mounted on a scraper mounting plate 20, and the scraper mounting plate 20 is fixed to an intermediate portion of the mounting arm 17 in the longitudinal direction.

  Further, the sowing means 11 includes, for example, a tank body 21 which is a hopper body in the left and right direction in which a sowed material (fertilizer and seeds) in a granular or powder form is stored, and a sowed material from the tank body 21 side. (Fertilizer and seeds) and a fertilizer sowing disc 22 for guiding and falling into a sowing groove in a field.

  The tank body 21 rotates vertically around a horizontal axis (rotation center axis X) 24 between a normal position (first position) and a lifting position (second position) around a tank mounting portion 23 of the body 2. It is movably mounted. The normal position is a position where the tank body 21 is in a horizontal state, and the lifting position is a position where the tank body 21 is lifted and turned upward to be in an inclined state (the inclination angle with respect to the horizontal direction is, for example, 40 degrees). It is.

  At the rear end of the machine body 2, a step 25, which is a work table on which an operator rides, is fixed. This step 25 is located behind the tank mounting part 23 located at the middle part of the body 2 in the front-rear direction. Therefore, the tank body 21 moves toward the front side opposite to the step 25 side. It rotates upward about the shaft 24 from the normal position to the lifting position so as to tilt. In addition, the step 25 is configured by a plate-like member 26 that is long in the left-right direction and that is positioned so as to cover the upper part of the compression wheel 12. This step 25 is located, for example, at substantially the same height as the tank mounting portion 23 of the body 2.

  Here, as shown in FIGS. 3 to 5, the tank mounting portion 23 of the body 2 has a pair of left and right tank mounting plates 31 that are separated from each other and opposed to each other. A rotating frame 56 of the body 21 is rotatably mounted via the shaft 24.

  At the front ends of the two tank mounting plates 31, there is formed an arc-shaped rotation restricting long hole 32 around the shaft 24. Then, a projecting shaft portion 57 protruding from the lower end portion of the rotating frame portion 56 of the tank body 21 is slidably inserted along the elongated hole portion 32 into the elongated hole portion 32 for rotation control. I have. The upper portions of the rear ends of the tank mounting plates 31 are connected to each other by a horizontal connecting plate 33 that is long in the left-right direction. Holes 34 are formed at both ends in the left-right direction and at the center in the left-right direction of the connecting plate 33.

  Further, between the tank mounting portion 23 of the body 2 and the rotating frame portion 56 of the tank body 21, the tank body 21 is urged upward (forward) from the normal position side toward the lifting position side. A coil-shaped tension spring 35 as an urging means is provided. The front end of the tension spring 35 is attached to the lower end of the rotating frame 56 of the tank 21. The rear end of the extension spring 35 is attached to a spring attachment plate 36 fixed to the tank attachment plate 31 of the tank attachment portion 23.

  On the other hand, the tank body 21 has a tank body 41 which is a box-shaped storage section which is elongated in the left-right direction and in which the seeds are stored inside from the upper opening. In the tank main body 41, a partition wall 44 that partitions the internal space of the tank main body 21, forms a fertilizer storage space 42 on the front side, and forms a seed storage space 43 on the rear side is provided. The upper opening of the fertilizer storage space 42 can be opened and closed by a front lid 45, and the upper opening of the seed storage space 43 can be opened and closed by a rear lid 46.

  The tank main body 41 is composed of a front plate 51, a rear plate 52, a left plate 53, a right plate 54, and a bottom plate 55, and a plurality of fertilizer drop ports 49 are formed on the front side of the bottom plate 55. A plurality of seed drop openings 50 are formed on the rear side of the bottom plate 55.

  A rotating frame portion 56 that can rotate around the shaft 24 is fixed to the front plate 51 of the tank body portion 41, and a leftwardly projecting shaft portion 57 is provided at a lower end portion of the rotating frame portion 56. Have been.

  A left mounting plate 58 is fixed to the left plate 53 of the tank body 41, and a right mounting plate 59 is fixed to the right plate 54 of the tank body 41. The left and right mounting plates 58, 59 Between the rear ends, a round bar-shaped grip bar 60 in the left-right direction that is gripped by an operator when rotating the tank body 21 about the shaft 24 is provided. The rear ends of the mounting plate portions 58, 59 protrude rearward from the tank body 41, and holes 58a, 59a are formed in the protruding rear ends, respectively.

  A mounting portion 63 mounted on the upper surface of the connecting plate 33 of the tank mounting portion 23 of the body 2 is fixed to a lower portion of the rear plate 52 of the tank main body portion 41. The mounting portion 63 includes a fixing plate 64 fixed to the rear plate 52, and a protruding plate 65 protruding rearward from the fixing plate 64. The protruding plate 65 is mounted on the upper surface of the connecting plate 33 so as to overlap with the connecting plate 33. Holes of the connecting plate 33 are provided at both left and right ends of the protruding plate 65 and at the center in the left and right direction. A hole 66 facing the portion 34 is formed.

  Then, as shown in FIG. 3, when the tank body 21 is located at the normal position (when the tank body 21 is in the normal state), the protruding plate 65 of the mounting portion 63 is placed on the upper surface of the connecting plate 33. Then, a bolt 68 is inserted into both of the holes 34 and 66 facing each other, a nut 69 is screwed into the inserted bolt 68, and holes 58a and 59a of the mounting plate portions 58 and 59 facing each other. The bolt 68 is inserted into the holes 78a, 79a of the standing plates 78, 79, and the nut 69 is screwed into the inserted bolt 68. In the normal position.

  At this time, an elongated tank support plate 71 having insertion shaft portions 72 at both ends in the longitudinal direction and having a plurality of (for example, five) holes 73 arranged at intervals in the longitudinal direction is formed by bolts 68. And are fixed to the lower surface of the connecting plate 33 by being fastened together with a nut 69.

  That is, for example, a bolt 68 is inserted into the central hole 66 of the protruding plate 65, the central hole 34 of the connecting plate 33, and the central hole 73 of the tank support plate 71, and a nut 69 is inserted into the inserted bolt 68. The tank support plate 71 is fixed to the lower surface of the connection plate 33 by being screwed together. Therefore, the tank support plate 71 is not lost when the tank body 21 is in the normal state.

  On the other hand, as shown in FIGS. 4 and 5, when the tank body 21 is located at the lifting position (when the tank body 21 is being lifted), the projecting plate 65 of the mounting portion 63 is The tank body 21 is detached from the upper surface and mounted on the tank support plate 71 between the connecting plate 33 and the protruding plate 65 facing each other so that the tank body 21 is supported and fixed at the lifting position by the tank support plate 71. .

  At this time, the bolt 68 and the nut 69 removed from the holes 34, 66, 58a, 59a, 78a, 79a are attached to the holes 73 of the tank support plate 71 to prevent loss. The insertion shaft 72 on the upper end side of the tank support plate 71 is inserted into the hole 66 at the center in the longitudinal direction of the protruding plate 65, and the insertion shaft 72 on the lower end of the tank support plate 71 is positioned at the center of the connection plate 33 in the longitudinal direction. Is inserted into the hole 34. The nut 69 is fixed to the back side of the hole 34 of the connecting plate 33, the back side of the holes 58a, 59a of the mounting plate portions 58, 59 and the back side of the hole 73 of the tank support plate 71 by welding or the like. You may do so.

  As shown in FIG. 5 to FIG. 7, the sowing means 11 includes a feeding means 81 which is a feeding part for feeding out a sowing object in the tank body 21 when the tank body 21 is located at the normal position, and And a driving unit 82 which drives the unit and feeds out the sowing object by a predetermined amount to the feeding unit.

  The feeding means 81 includes a first rotating shaft 83, which is a left and right two rotating shafts extending in the left-right direction, and the first rotating shaft 83 is inserted so as to be able to be inserted and removed, and rotates together with the first rotating shaft 83 to feed out fertilizer. A fertilizer feeding roll 84 that is a plurality of feeding rolls, a box-shaped first case 85 in which the respective fertilizer feeding rolls 84 are stored, and a second rotating shaft 86 that is a left and right two rotating shafts that are long in the left-right direction. A seed feeding roll 87, which is a plurality of feeding rolls through which the second rotating shaft 86 is inserted so as to be able to be inserted and withdrawn and rotates together with the second rotating shaft 86 to feed seeds, and a box-shaped housing in which the various child feeding rolls 87 are stored Of the second case 88.

  The fertilizer feeding roll 84 has, for example, a concave groove 84a for feeding at an outer peripheral portion, and a through hole 84b through which the first rotating shaft 83 is inserted / inserted at a central portion. The first case 85 in which the fertilizer feeding roll 84 is rotatably housed has an upper surface opening 85a facing the fertilizer drop opening 49 of the bottom plate 55 of the tank body 21. That is, the upper surface opening 85a of the first case 85 is close to and opposed to the fertilizer drop port 49 when the tank body 21 is in the normal state, but is separated and opposed to the fertilizer drop port 49 when the tank body 21 is being lifted and is exposed to the outside. It will be in the state of having done. The left and right sides of the first case 85 are formed with through holes 85b through which the first rotating shaft 83 is inserted and removed.

  A fertilizer guide tube 91 is fixed to the bottom of the first case 85. The fertilizer guide tube 91 has an upper end portion of a flexible fertilizer guide hose 92 for guiding the fertilizer to the upper portion of the fertilizer seeding disc 22. Is attached.

  Similarly, the seed feeding roll 87 has, for example, a concave groove 87a for feeding at an outer peripheral portion, and a through hole 87b through which the second rotating shaft 86 is inserted / inserted at a central portion. The second case 88 in which the seed feeding roll 87 is rotatably housed has an upper surface opening 88a facing the seed drop opening 50 of the bottom plate 55 of the tank body 21. In other words, the upper surface opening 88a of the second case 88 is close to and faces the seed drop port 50 when the tank body 21 is in the normal state, but is separated from and faces the seed drop port 50 when the tank body 21 is lifted and is exposed to the outside. It will be in the state of having done. The left and right sides of the second case 88 are formed with through holes 88b through which the second rotating shaft 86 is inserted and removed.

  A seed guide cylinder 93 is fixed to the bottom of the second case 88. The seed guide cylinder 93 has an upper end portion of a flexible seed guide hose 94 for guiding the seeds to the upper portion of the fertilizer seeding disc 22. Is attached.

  The driving means 82 includes a first sprocket 96 which is a sprocket detachably attached to an outer end of each of the left and right first rotating shafts 83 with a fixture (for example, a stopper pin and a retaining pin) not shown, A first drive sprocket 97 facing away from the first sprocket 96, an endless first chain 98 stretched over both sprockets 96, 97, and a first drive source for rotating the first drive sprocket 97. A first motor (fertilizer feeding motor) 99.

  Further, the driving means 82 includes a second sprocket 101 which is a sprocket detachably attached to an outer end portion of each of the left and right second rotating shafts 86 with attachments (for example, a fixing pin and a retaining pin) 100. A second driving sprocket 102 facing away from the second sprocket 101, an endless second chain 103 wrapped around the two sprockets 101 and 102, and a second driving source which is a second driving source for rotating the second driving sprocket 102. And two motors (motors for feeding out seeds) 104.

  The second sprocket 101 is formed with a shaft hole 101a through which the second rotating shaft 86 is inserted and removed, and is rotatably attached to a boss 107 of a motor support plate 106 via a bearing 108. Like the second sprocket 101, the first sprocket 96 also has a shaft hole 96a through which the first rotating shaft 83 is inserted and removed, and a bearing (not shown) is provided on the boss 107 of the motor support plate 106. ) Is rotatably mounted via.

  The first rotating shaft 83 can be inserted into and removed from the through hole 84b of each fertilizer feeding roll 84 and the through hole 85b of each first case 85 through the shaft hole 96a of the first sprocket 96. Similarly, the second rotary shaft 86 can be inserted into and removed from the through holes 87b of the various child feeding rolls 87 and the through holes 88b of the second cases 88 through the shaft holes 101a of the second sprocket 101. I have.

  As shown in FIG. 6, the two chains 98 and 103 are covered and hidden by a chain case 112 detachably attached to the case attachment portion 111. The two motors 99 and 104 supported by the motor support plate 106 and arranged behind the tank body 21 are covered and hidden by a motor case 113. An upright plate 78 is provided on the upper surface of the motor case 113 at the left end, and an upright plate 79 is provided on the upper surface of the motor case 113 at the right end.

  Next, the operation and the like of the agricultural work machine 1 will be described.

  When performing the fertilizer sowing operation, the operator puts fertilizer into the front fertilizer storage space 42 in the tank body 41 of the tank body 21 located at the normal position, and puts seeds into the rear seed storage space 43.

  Then, when the agricultural working machine 1 is moved in the traveling direction by traveling of the tractor, a sowing groove is formed on the surface portion (uncultivated soil) of the field by the groove forming disk 8 of the groove forming means 6.

  In the formed sowing groove, the fertilizer and seeds fed out by a fixed amount from the inside of the tank body 41 of the tank body 21 based on the rotation of the fertilizer feeding roll 84 and the seed feeding roll 87 of the feeding means 81 are sown. I will

  Thereafter, the fertilizer and seeds in the sowing ditch of the field are covered with soil cover, and the soil is crushed by the crushing wheel 12 and compacted. When replenishing fertilizer and seeds into the tank body 41, the front cover 45 and the rear cover 46 are opened to open the upper opening of the tank body 41.

  Here, for example, after the work is completed, when the agricultural machine 1 is removed from the tractor and the tank body 21 and the feeding means 81 and the like are cleaned (cleaned) while being supported by the stand 110, the worker grasps the grasping bar portion 60. After lifting the tank body 21 from the normal position to the lifting position around the shaft 24 from the normal position, the tank body 21 is supported at the lifting position by the tank support plate 71. Fix it.

  At this time, since the tension spring 35 urges the tank body 21 toward the lifting position side, the operator can lift the tank body 21 to the lifting position with a light force.

  Then, when the tank body 21 is located at the lifting position, as shown in FIG. 8 (a), the worker riding on the step 25 remains in the second case 88 behind the feeding means 81. It is possible to visually observe not only the seeds (residual seeds) but also the fertilizer (residual fertilizer) remaining in the first case 85 on the front side of the feeding means 81.

  For this reason, the worker can easily remove the residual seeds and the residual fertilizer by using, for example, a high-pressure car washer, air, or the like while observing the state inside the cases 85 and 88. In addition, in the comparative example shown in FIG. 8B, since there is no step 25, it is difficult to visually observe the residual fertilizer.

  In this cleaning, the operator removes the chain case 112, and then removes the first rotating shaft 83 and the second rotating shaft 86 without removing the chains 98 and 103, thereby forming the shaft hole of the first sprocket 96. Through the portion 96a and the shaft hole 101a of the second sprocket 101, the fertilizer is extracted from the plurality of fertilizer feeding rolls 84 and the plurality of seed feeding rolls 87.

  Then, the plurality of fertilizer feeding rolls 84 and the plurality of seed feeding rolls 87 are individually rotatable in the corresponding cases 85, 88, so that the entire circumference of each of the rolls 84, 87 can be easily cleaned. Can be.

  Thus, according to the agricultural working machine 1, the tank body 21 is rotatably attached to the tank mounting portion 23 of the machine body 2 between the normal position and the lifting position, and the tank body 21 is located at the lifting position. In the state, the worker riding on the step 25 can visually observe the seeds in the feeding means 81, so that the seeds left inside the feeding means 81 can be easily removed, thereby reducing the burden on the worker. .

  In addition, since the tension spring 35 is provided to urge the tank body 21 from the normal position side to the lifting position side, the worker can lift the tank body 21 to the lifting position with a light force, and The burden on the user can be reduced.

  Further, the rotating shafts 83, 86 of the feeding means 81 are pulled out outward from the feeding rolls 84, 87 by using the shaft holes 96a, 101a of the sprockets (hollow sprockets) 96, 101 of the driving means 82. Since each of the feeding rolls 84 and 87 can be made to be freely rotatable individually, each of the feeding rolls 84 and 87 can be easily cleaned, and the burden on the operator can be reduced.

  Note that the inclination angle of the tank body 21 when the tank body 21 is lifted is not limited to 40 degrees, and is arbitrary, and may be, for example, 45 degrees or more, 90 degrees, or the like.

  In addition, the agricultural work machine 1 is not limited to the one in which the fertilizer and the seed are sown in the field, and may be the one in which only the fertilizer is sown, the one in which only the seed is sown, or the one in which a drug or the like is sown.

1 agricultural work machine 2 body
12 crushing wheel
21 Tank body
23 Tank mounting part
25 steps
35 Tension spring as biasing means
81 Feeding means
82 driving means
83 1st axis of rotation which is axis of rotation
84 Fertilizer feeding roll which is the feeding roll
86 Second rotation axis, which is the rotation axis
87 Seed feeding roll, which is the feeding roll
The first sprocket, which is a 96 sprocket
96a shaft hole
2nd sprocket which is 101 sprocket
101a Shaft hole

Claims (1)

An agricultural work machine that performs a work of sowing an object to be sown on a field,
An airframe having a tank mounting portion,
A step on which the operator is provided,
A tank body that is rotatably mounted on the tank mounting portion between a first position and a second position, and that stores a sowing object;
A feeding means for feeding the seed in the tank body when the tank body is located at the first position;
Driving means for driving the feeding means,
When the tank body is located at the second position, the worker riding the step can visually observe the seed in the feeding means,
The feeding means has a rotating shaft and a feeding roll through which the rotating shaft is removably inserted,
The driving means has a sprocket detachably attached to the end of the rotating shaft,
The agricultural machine according to claim 1, wherein the rotating shaft is configured to be able to be inserted into and removed from the feeding roll by using a shaft hole formed in the sprocket.

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