JPH10327634A - Apparatus for sending out granule - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply carry out the maintenance of sending mechanism part by contriving the structure of an apparatus for sending out granules and to improve disassembly and assembly. SOLUTION: In a sending out mechanism for a fertilizing apparatus for installing a sending out roll 71 equipped with a great number of recessed parts on the outer periphery below a hopper 18a and sending out a fertilizer introduced into the recessed parts with the rotation of the sending out roll 71 to the starting end of a fertilizing hose 21, a roll case 22 for enclosing and supporting the sending out roll 71 is constituted of a structure of vertical two divisions for connecting an upper case 22A to a lower case 22B in a division plane (w) including a revolving shaft center Y of the sending out roll 71.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powdery and granular material feeding device suitable for a fertilizer application device of a rice transplanter, and more particularly, to a technique for improving the maintainability of a powdery and granular material feeding mechanism.

[0002]

2. Description of the Related Art For example, a rice transplanter with a fertilizer device disclosed in Japanese Patent Application Laid-Open No. 8-331954 is provided with a pair of left and right dispensing mechanisms in which a lower portion of a horizontally long fertilizer hopper is provided. A fertilizing device having a fertilizing hose and a feeding mechanism for each seedling planting mechanism, that is, a granular material feeding device was provided.

[0003]

In the powder and granular material feeding device, the feeding roll portion is a driving portion having the most important function as a feeding mechanism and is a portion that requires inspection and maintenance. In such a case, the roll case that surrounds and supports the pay-out roll is composed of a single member having upper and lower open portions, and it is difficult to perform maintenance such as cleaning and inspection of the pay-out roll, and disassembling for repair. Also, it was difficult to reassemble.

[0004] An object of the present invention is to improve the disassembling and assemblability by maintaining the feeding mechanism portion easily by improving the structure of the powder and grain feeding device.

[0005]

Means for Solving the Problems According to the first aspect of the present invention, a dispensing roll having a concave portion for entering a granular material on an outer periphery is disposed below a granular material discharge port of a hopper for storing a granular material. In the powder and granular material feeding device configured to feed out the powder and granular material that has entered the concave portion with the rotation of the feeding roll to the starting point of the powder and granular material transfer path below the feeding roll, the upper case portion A lower case portion is connected to a split surface including a rotation axis of the feed roll by an upper and lower split structure to form a roll case that surrounds and supports the feed roll.

According to a second aspect of the present invention, in the first aspect, the upper case portion includes a temporary receiving mechanism capable of suspending and supporting the feeding roll in a state where the lower case portion is detached. And a retractable posture for releasing the engagement with the pay-out roll.

A third invention is characterized in that, in the first or second invention, a feeding roll can be engaged with and held by the lower case portion in a state where the upper and lower case portions are separated from each other.

[Operation] The configuration of claim 1 is to form the roll case into a vertically divided structure. In other words, since the upper case portion and the lower case portion are connected to each other on the division surface including the rotation axis of the feeding roll, the roll case is divided into upper and lower portions to be installed as a powder and granular material feeding device. It is possible to expose the delivery roll part which is the drive rotation part in the state,
Cleaning and maintenance become easier. In addition, since it has a simple split structure of upper and lower divisions, disassembly and assembling operations are simpler than, for example, compared to a composite case structure in which only the pivot portion is combined as a separate support member with a single member roll case. It will be easy.

According to the second aspect of the present invention, even when the lower case portion is removed, it is possible to maintain the state of being attached to the upper case portion without dropping the feeding roll by setting the temporary receiving mechanism to the working posture. It is possible, and inspection, maintenance and cleaning can be performed in that state. Further, if the temporary receiving mechanism is operated to the retracted position, the feeding roll can be removed from the upper case, and cleaning and maintenance can be performed more easily.

According to the third aspect of the invention, when the upper and lower case portions are separated from each other, the feeding roll can be engaged with and held by the lower case portion. The roll case can be supported by the lower case portion, and the roll case can be separated up and down without inconvenience such as dropping the feeding roll or attaching dust or foreign matter to the feeding roll.

[Effect] In the powder and granular material feeding device according to any one of claims 1 to 3, (a) the upper and lower portions of the roll case
The division makes it easy to inspect, maintain, clean, disassemble and assemble the dispensing roll portion, and as a result, it is possible to easily maintain the dispensing mechanism portion in a well-functioning state.

[0012] In the powder and granular material feeding device according to the second aspect,
The provision of the above effect (a) while the temporary receiving mechanism prevents an unexpected drop of the feeding roll when the lower case portion is removed, and also enables maintenance in a state where the feeding roll is mounted on the upper case. Is obtained.

[0013] In the powder and granular material feeding device according to the third aspect,
Since the feeding roll can be supported by the lower case portion, there is an advantage that the above effect (a) is obtained while preventing the feeding roll from unexpectedly dropping when the roll case is disassembled.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a seedling planting device 4 as a planting unit is connected to the rear of a riding type traveling body having a pair of left and right front wheels 1 and a rear wheel 2 via a link mechanism 3 so as to be able to move up and down. A fertilizer applicator A as a granular material feeding device is provided at a position in front of the seedling planter 4 and immediately after the driver's seat 67 to constitute a rice transplanter with a fertilizer machine.

In this rice transplanter, the power of the engine E mounted in the hood 5 of the traveling machine is transmitted to the front wheels 1 via the front transmission case 6 and also transmitted via the traveling system transmission shaft 7 and the rear transmission case 8. It is a four-wheel drive type that is transmitted to the rear wheels 2, and is configured to steer the left and right front wheels 1 by operating the steering wheel 10 of the boarding operation unit 9. A PTO shaft 11, which is a planting system transmission shaft, extends rearward from the front transmission case 6, and power is transmitted from the PTO shaft 11 to the seedling planting device 4, so that the vehicle travels in the field. It is configured so that the seedling planting operation can be performed while performing.

The seedling planting device 4 includes a hydraulic cylinder 1 for lifting and lowering.
With the expansion and contraction operation of 2, the raising and lowering operation can be freely performed between a working position for seedling planting whose lower end is in contact with the field scene and an ascending position which moves largely upward. The seedling mounting table 14 reciprocally moves at a set pitch in the vehicle body width direction with respect to the planting section frame 13 connected and supported by the link mechanism 3, and the lower ends of the seedlings to be planted mounted on the seedling mounting table 14. A six-row planting system comprising a plurality (six) of planting mechanisms 15 for taking out seedlings one by one from each section and planting them in a field, a grounding float 58 for leveling a mud surface while grounding on the field, and the like. .

A vertical feeder 16 for feeding a set amount of seedlings placed at the end of the lateral movement stroke toward the planting mechanism 15 is provided at a seedling placement portion of the seedling mounting table 14 for each planting strip. Have been. The vertical feeding device 16 is configured such that a belt with a projection is wound over a pair of upper and lower pulleys, and a lower pulley is rotated by a predetermined amount by a contact action at a stroke end.

Although not described in detail, the longitudinal feed device 16 has a longitudinal feed clutch (not shown) which can be switched between a state in which the longitudinal feed operation is performed and a state in which the operation is stopped every two lines. It is provided. In the ground float 58, at each location adjacent to the planting site of the seedling in each planting line, a groove for entering the mud layer below the ground surface and supplying fertilizer to the mud surface. Device 1 that forms
7 is provided.

Next, the fertilizer applicator A will be described. FIG.
As shown in FIG. 5, the fertilizer applicator A includes a two-piece integrated fertilizer hopper 18 for storing powdered and granular fertilizer, a feeding mechanism 19 for feeding a predetermined amount of fertilizer therefrom, and a seedling for feeding the fed fertilizer. A fertilizing hose (an example of a granular material transfer path) 21 that is sent toward the groove generator 17 of the planting apparatus 4 is provided. A plurality of feeding mechanisms 19 (6
2) funnel part 2 for fertilizer hopper 18
Two pieces are integrally arranged below 8a. A blower mechanism D is provided for forcibly transferring the fertilizer fed from each feeder mechanism 19 through the fertilizer hose 21 to each groove generator 17 by blowing air from the blower 20.

As shown in FIG. 5 and FIG.
Is a feeding roll 71 having a large number of recesses 70 for accommodating a granular material formed at a predetermined pitch on the outer periphery thereof, and a three-pronged funnel 72 continuous below the roll 71 (an example of a path start end).
The two sets are arranged side by side on the left and right close to and below the single funnel 18a. That is,
The feeding roll 71 is formed of a cylindrical synthetic resin material integrally provided with the passive gear 40, and includes two partition rings 7.
5, 75 and three substantially gear-shaped feeding rings 76a, 7
6b and 76c are externally fitted. That is, the concave portion 70 is a concave portion of the feeding rings 76a, 76b, 76c.

The roll case 22 includes a partition ring 7.
5 and 75, fixed partition walls 86, 86 are provided, and shutters 87, 87 corresponding to the feeding rings 76b, 76c are provided. Each shutter 8
Reference numeral 7 denotes a state in which the fertilizer can be pulled out forward by finger operation, and the fertilizer is guided only to the first feeding ring 76a by inserting and removing the two shutters 87, 87, first and second.
It is possible to select a state supplied to the supply rings 76a and 76b and a state supplied to all of the first to third supply rings 76a, 76b and 76c.

A pair of pay-out rolls 71, 7 adjacent to each other
Reference numeral 1 denotes a state in which the respective feed ring sides face each other and the rotation axis Y is shared, and the gear side includes a separate bearing 7.
The roll ring 22 is rotatably supported on the roll case 22 via a common shaft 74 which is fitted inside the two rolls 71, 71. The common shaft 74 and each of the pay-out rolls 71, 71 are rotatable, and the pair of pay-out rolls 71, 71 can be driven separately. A funnel part 18a is fitted and mounted on the upper part of the roll case 22 so that the fertilizer stored in the concave part 70 flows down to the lower funnel part 72 as the feeding roll 71 rotates. is there.

The three roll cases 22 are fixedly supported by a horizontal frame 30 which is supported by a vertical frame 29 fixedly erected from the body frame F. The passive gear 40 is integrally formed with each of the pay-out rolls 71 and has a structure in which there is no independent rotating shaft, and the pay-out mechanism 19 is configured such that each of the six pay-out mechanisms 19 can be driven independently.
It is configured such that it can be individually driven and stopped for each time.

The driving structure of the feeding mechanism 19 will be described. A drive shaft 32 is disposed at a position on the rear side of the feeding mechanism 19 so as to extend over substantially the entire width of the fertilizer applicator A along the vehicle body width direction and to be rotatably supported at both ends. A one-way clutch 33 is provided at an intermediate portion of the drive shaft 32 in the width direction. The operation arm 34 of the one-way clutch 33 and the PTO shaft 1 via the bevel gear mechanism 28
A rotating arm 36 attached to a lateral transmission shaft 35 driven to rotate by 1 is pivotally connected by an interlocking rod 37, and the swing movement of the operation arm 34 accompanying the rotation of the rotating arm 36 is controlled by a one-way clutch 33. The drive shaft 32 is intermittently rotated only in a predetermined direction.

A total of six fertilizing clutches 38 are provided for each drive gear 39 on the drive shaft 32.
As shown in FIGS. 7 and 8, the fertilization clutch 38 is configured by providing a drive gear 39 and a clutch piece 41 so as to be able to engage and disengage. That is, a gear 39 rotatably fitted to the drive shaft 32 and a passive gear 40 of the feeding roll 71 are provided in a meshing state. The clutch piece 41, which is freely rotatable and slidable in the axial direction, is fitted externally in a state of being urged by a winding spring 77 in a direction approaching the drive gear 39. An engagement portion k is formed at a position where the clutch piece 41 and the drive gear 39 are opposed to each other, and the sliding operation of the clutch piece 41 engages the clutch when the engagement portion k is engaged, and disengages the clutch when the engagement is released. .

Each clutch piece 41 is configured to be individually disengaged by pulling the operation wire 42. That is, the operating body 57 that engages with the clutch piece 41 is swingably supported around the longitudinal axis X3 by the support portion 30a fixedly extended from the horizontal frame 30, and the meshing portion k is moved by the spring urging force. The meshing clutch is brought into the engaged state, and the pulling operation of the operation wire 42 separates the meshing portion k against the spring force to switch to the clutch disengaged state.

As shown in FIG. 8 and FIG.
2 to the upper case portion 22A supported by the horizontal frame 30.
And a lower case portion 22B integrally formed with the funnel portion 72 are formed into an upper and lower two-part structure in which the front case part includes a rotation axis Y of the feeding roll 71 and is slightly forward-rearranged and is connected in a front-rear division surface w. The upper case portion 22A has a horizontal frame 30.
The funnel 72 is integrally formed with the lower case portion 22B, and the blower tube 45 is attached to the lower case portion 22B.

In order to assemble the two case parts 22A and 22B, first, the hook 82 at the rear of the lower case part 22B is engaged with the projection 83 at the rear of the upper case part 22A and joined at the dividing surface w, and then the lower part The hook arm 84 at the front of the case portion 22B is swung up and down at the fulcrum Z, so that the upper case portion 22A
Is engaged with the engagement protrusion 85 formed on the second member. To remove, operate in the reverse of the above.

As shown in FIG. 6, a temporary receiving mechanism G capable of suspending and supporting the feeding roll 71 in a state where the lower case portion 22B is detached from the upper case portion 22A is provided. The temporary receiving mechanism G includes a protruding shaft portion 7 at the end of the feeding roll 71.
1b is provided with a pair of left and right receiving members 81 to be fitted to the outside frame and attached to the horizontal frame 30, and the receiving body 81a is formed of a flexible member such as a spring plate. In the free state, each of the receiving members 81 is fitted on the projecting shaft portion 71b, and the projecting shaft portion 71b
Can be removed from In other words, the temporary receiving mechanism G is configured to be able to change its posture between an operation position in which it is engaged with the feed roller 71 and suspended and supported, and a retracted position in which the engagement with the feed roller 71 is released.

When the lower case portion 22B is removed from the upper case portion 22A for inspection, maintenance, or the like, the delivery rolls 71, 71 are maintained in a state of being mounted on the upper case portion 22A by a pair of receiving members 81, 81. There is no possibility of accidental dropout. In order to remove the feeding roll 71 from the upper case portion 22A, the receiving member 81 is twisted and released to the side, and the common shaft 7 is removed.
You just need to pull out of 4.

The dividing surface w is a front-rear surface, on which the feeding roll 71 can be placed and supported on the lower case portion 22B, and the feeding roll 7 removed from the upper case portion 22A.
1 can be placed on the lower case portion 22B. That is, the upper and lower case portions 22A, 22A
B, in a state where they are separated from each other,
Since the feeding roll 71 can be placed and held on B, inspection and maintenance inside the upper case portion 22A can be easily performed. .

Next, the blowing mechanism D will be described. FIG.
As shown in FIG. 4 to FIG. 4, a blower pipe 45 which is arranged near the front of the feeding mechanism 19 and extends left and right and both ends are supported by brackets (not shown), and is provided at the left end of the blower pipe 45. The blower mechanism integrally includes a blower 20 that blows air into the blower tube 45 and blower intake tubes 78 and 79 whose rear ends communicate with the front end of the funnel 72 and whose rear ends protrude into the blower tube 45. D. Then, of the two air intake pipes 78 and 79 arranged in parallel close to each other, the amount of the right air intake pipe 79 on the lower side in the airflow direction of the airflow pipe 45 into the airflow pipe 45 is determined by the superiorness in the airflow direction. It is larger than the amount of entry of the left air intake pipe 78 on the side.

Notch portions 78a, 79a are formed on the left side (on the upper side in the air blowing direction) of each of the air intake pipes 78, 79 so that the air blowing from left to right can be efficiently taken in. Then, the left and right air intake pipes 78, 79
Are very close to the left and right, so the left air intake pipe 78
As shown in FIG. 4, the right air intake pipe 79 is disposed so as to be closer to the front side by the notch 79 a in order to eliminate the difficulty of the wind blowing on the right air intake pipe 79 due to the presence of It is.

As shown in FIG. 3, the fertilizing hose 21 is inserted and mounted in the rear end opening of each funnel 72. A discharge port 54 for the fertilizer to which the discharge pipe 48 is connected is formed in the front upper portion of the funnel case 22, and the fertilizer dropped and supplied from the fertilizer hopper 18 is guided to the feeding roll 71. A path switching shutter 55 capable of switching between an operation state and a discharge state leading to the discharge port 54 is provided in the roll case 22, and a switching lever 80 is provided outside the roll case 22. Normally, the right end of the blower pipe 45 is closed with a lid 45a that can be freely opened and closed.

As shown in FIG. 1 and FIG. 2, the discharge pipes 48 communicated with the respective discharge ports 54 each have a large diameter at the lower part in the fertilizer guide direction, three pipes on each of the left and right sides. The fertilizer is merged into one confluence pipe 48a and distributed to the left and right sides, so that the fertilizer is discharged from a common fertilizer discharge port 49. When performing fertilization during the seedling planting operation, the switching lever 80 is switched to the operation position, the blowing operation of the blower 20 is started, and the fertilizer fed out by a predetermined amount from the feeding mechanism 19 is fed from the funnel 72 by wind force. After passing through the fertilizing hose 21, it is sent out toward the groove generator 17 and supplied to the field.

After the completion of the planting operation, the fertilizer hopper 1
In order to collect the fertilizer remaining in the hopper 8, the switching lever 80
Is switched to the discharge position, and the air is blown by the blower 20 so that the discharged fertilizer passes through the discharge pipe 48 from the discharge port 54 and is discharged from the fertilizer discharge port 49 to the outside. If a collection container or the like is positioned corresponding to the fertilizer discharge port 49, fertilizer can be collected.

[Brief description of the drawings]

FIG. 1 is an overall side view of a rice transplanter.

FIG. 2 is a rear view of the fertilizer application device.

FIG. 3 is a partially cutaway side view of the fertilizer supply unit.

FIG. 4 is a cross-sectional plan view showing a state of an air intake pipe.

FIG. 5 is a cross-sectional view of a fertilizer supply unit showing a shape of a feeding roll and the like.

FIG. 6 is a partially cutaway front view showing the structure of the feeding mechanism.

FIG. 7 is a sectional view showing a fertilizing clutch.

FIG. 8 is a side view of the fertilizer supply unit showing a division surface of the roll case.

FIG. 9 is a side view showing a divided structure of the roll case.

[Explanation of symbols]

 Reference Signs List 18 Fertilizer hopper 18a Granular material discharge port 21 Granular material transfer path 22 Roll case 22A Upper case portion 22B Lower case portion 70 Depressed portion 71 Feeding roll G Temporary receiving mechanism w Dividing surface

Claims (3)

[Claims] 1. A dispensing roll having a concave portion for entering a granular material formed on an outer periphery thereof is disposed below a granular material discharge port of a hopper for storing a granular material, and the concave portion is rotated with rotation of the dispensing roll. A powder and granular material feeding device configured to feed the granular material that has entered into the path start end of the powder and granular material transfer path below the feeding roll, comprising: an upper case portion and a lower case portion; A powder and granular material feeding device, comprising a roll case that surrounds and supports the feeding roll by a vertically divided structure that is connected on a split surface including a rotation axis of the feeding roll. 2. A temporary receiving mechanism capable of suspending and supporting the feeding roll in a state where the lower case part is detached from the upper case part.
An action posture for engaging and suspending and supporting the feeding roll,
2. The powder and granular material feeding device according to claim 1, wherein the posture of the powder and granular material feeding device is configured to be changeable to a retracted position in which the engagement with the feeding roll is released. 3. 3. The powder and granular material feeding device according to claim 1, wherein the feeding roller is configured to be able to engage with and hold the lower case portion in a state where the upper and lower case portions are separated from each other.