JP3516866B2 - Powder material feeding device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powdery or granular material feeding device suitable as a fertilizer application device for rice transplanters, and more particularly to a technique for improving maintainability, downsizing, or realizing a rational drive structure. is there.

[0002]

2. Description of the Related Art In Japanese Patent Application No. 9-22447 filed earlier, fertilizer fed from a feeding section arranged at the rear of the machine is moved in a fertilizing hose by the wind of a blower and supplied to a planting section. We have proposed a fertilizer applying device. That is, in order to be advantageous in the front-rear weight balance,
The main part of the fertilizer application equipment is mounted on the rear part of the machine, which is the front side of the seedling stand, and the fertilizer can be reliably supplied by wind force to the planting mechanism part which is relatively far from the main part. .

[0003]

In the above proposed technique, a single duct having a blower connected to one end thereof is laid sideways in the lateral direction of the machine body, and six ducts are juxtaposed from the duct for each winder. By connecting the intake pipe, the wind force generated by the blower is supplied to the beginning end of the fertilizer application hose, which is the fertilizer transfer route. The fertilizer feeding section is configured as one section (each section) equipped with a feeding mechanism, a fertilizer hose, an intake pipe, etc., except for the hopper provided at the upper part, but the blower duct has a single Therefore, in order to disassemble it for cleaning or inspection, it is necessary to attach or detach the connecting portion between the intake pipe and the air duct or the connecting portion between the intake pipe and the feeding portion.

However, because of the space, the blower duct and the feeding portion are arranged close to each other in the front and rear, and the feeding portion has an inverted triangular shape with a large upper portion due to the presence of the feeding mechanism and the hopper. Since there is little space in the area and the approach space to those areas is also small, it is difficult to perform finger operation for attaching and detaching the feeding portion, and there is room for improvement in this respect.

An object of the present invention is to improve the attachability / detachment operability of a wind transfer type granular material feeding device such as a fertilizer application device. In order to mount the rice transplanter on the rear side of the rice transplanter in front of the seedling stand, it is desirable to have a narrow width in the front and back of the mounting space. It is also the point of making more compact.

[0006]

[Means for Solving the Problems]

[Structure] The first aspect of the present invention includes a feeding unit including a hopper that stores the powder and granular material, and a feeding mechanism that feeds the powder and granular material sent from the hopper to a starting end portion of the powder and granular material transfer path by a predetermined amount. In a powder and granular material feeding device formed by arranging in parallel, the wind generated by a wind power device is distributed and supplied to a plurality of the starting end portions through a blower duct, and the powder and granular materials fed to the starting end portion is fed by wind power. While being configured to be sent to the powder and granular material transfer path,
Partial duct provided with the blower duct for each of the feeding parts
Between the adjacent partial ducts and
It is characterized in that it is composed of a connecting hose that is detachably connected .

According to a second aspect of the present invention, in the first aspect of the present invention, there are provided a starting end portion provided with a feeding portion for each of the two powder and granular material transfer passages, and two intake passages connecting these both starting end portions and one partial duct. It characterized the Turkey be configured to Article 2 integrated with.

[0008]

A third invention is characterized in that, in the first or second invention, the partial duct is integrally attached to a feeding portion to which the partial duct corresponds.

[0010] The fourth invention is the first to third invention, the feed air duct, below the casing surrounding the feed mechanism,
Further, it is characterized in that it is arranged so as to be substantially within the front and rear width of the casing.

[0011]

[0012]

[0013]

[Operation] According to the constitutions of claims 1 to 4, a blower duct for wind-powering the delivered powder or granular material is attached or detached by connecting the adjacent ducts of the partial ducts provided for each delivery portion with a hose. Since they are freely connected to each other, it is possible to integrally attach and detach the feeding portion and the partial duct. In this case, in the blower duct part, compared to the above-mentioned connecting part between the intake pipe and the blower duct, etc., there is a marginal space around it and it is easy to operate with fingers, so the detaching operation of the feeding part is easier than before. You can do it easily. Further, since the air duct is divided into a plurality of parts, it becomes easier to clean and inspect the inside of the air duct as compared with the conventional long duct state.

According to the second aspect of the invention, since the two-line integrated feeding portion is connected through the connecting hose, the connecting hose is made of a soft rubber which is easily deformed, or has a bellows structure. It is possible to facilitate the attachment / detachment operation as compared with the case where the partial ducts are directly connected.

[0016]

According to the structure of claim 3 , the partial duct is
Since this is integrally attached to the corresponding feeding part,
Compared with the case where both of them are provided as separate bodies, there is no possibility that the both of them will shift during the attachment / detachment, and the attachment / detachment operation becomes easier.

According to the structure of claim 4 , the air duct is
Since it is arranged below the casing that surrounds the feeding mechanism and within a width that is substantially within the front-rear width of the casing, the front-rear length as the feeding portion including the blower duct is larger than that of the above-mentioned proposed technology. It can be shortened and can be configured to be suitable for the rear part of the airframe with a small space.

[0019]

[0020]

[Effect] In the powder and granular material feeding device according to any one of claims 1 to 4,
By dividing the blower duct for each feeding part, the attaching / detaching operation of the feeding part is simplified, and the inside of the blowing duct is easily cleaned and inspected, thereby improving maintainability.

[0022] In granular material feeding apparatus according to claim 2,
By connecting the partial ducts and connecting them relative to each other via a hose, it was possible to further improve the ease of the attachment / detachment operation as the feeding section.

In the powder and granular material feeding device according to claim 3 ,
By integrating the feeding section and the partial duct, the attachment / detachment operation of both of them can be further simplified.

In the powder and granular material feeding device according to the fourth aspect ,
There is an advantage that the air blower duct can be made compact in the front and rear so that it is almost within the front and rear width of the feeding part, and can be reasonably arranged in a relatively narrow front and rear space at the rear part of the machine body.

[0025]

[0026]

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, an engine 3 and a mission case 4 are provided at the front of a body having a pair of left and right front wheels 1 and a pair of left and right rear wheels 2 which can be steered. An operating part 5 is formed in the center of the machine body, a link mechanism 6 is connected to the rear part of the machine body so that the link mechanism 6 can be moved up and down, and a seedling planting device 7 is attached to the link mechanism 6 to form a riding type rice transplanter. .
The seedling planting device 7 is configured by 6-row planting, and includes three planting transmission cases 8, a rotary case 9 rotatably supported on both left and right sides of the planting transmission case 8, and both ends of the rotary case 9. A pair of planting claws 10 and three grounding floats 11 to be deployed
And a seedling stand 12 and the like.

Next, the structure of the fertilizer application device A will be described.
As shown in FIGS. 1, 2 and 3, the support frame 14 is fixed along the lateral direction of the machine to the upper part of the frame 13 to which the link mechanism 6 is connected in the rear part of the machine, and the four fertilizer feeding mechanisms 25 are provided. It is connected to the support frame 14.
4 fertilizer hoppers made of transparent resin 17,21,21,1
7 is mounted over the four fertilizer feeding mechanisms 25, and the four fertilizer hoppers 17, 21, 21, 17 are connected to each other as shown in FIGS. 2 and 4.
One lid 17a (made of transparent resin) that extends over the individual fertilizer hoppers 17, 21, 21, 17 is provided so as to be openable and closable around the rear-side horizontal axis P3. As a result, FIG. 1 and FIG.
As shown in, fertilizer feeding mechanism 25 and fertilizer hopper 17
Alternatively, four feeding portions K composed of 21 and 21 are arranged side by side on the rear side of the driving seat 23 of the driving portion 5.

As shown in FIG. 1, on the lateral side of the seedlings planted by the planting claws 10, there is provided a grooving device 18 for feeding fertilizer to the rice field while forming a groove, and six grooving devices are provided. Two 18 are attached to each ground float 11. As shown in FIGS. 1, 2, 3, 5, and 6, one fertilizer feeding mechanism 25 and two groovers 18 are provided with two funnel portions 2.
It is connected by 6 and 2 fertilizer hoses 19.

As shown in FIGS. 5 and 6, the feeding mechanism 2
Reference numeral 5 designates a feeding roll R having a large number of recesses 24a for receiving the powder or granules formed on the outer periphery thereof along the circumferential direction.
7 is arranged rotatably below the powder or granular material discharge port 7 and above the funnel portion (an example of the starting end portion of the fertilizer supply path) 26, and the pay-out roll R is formed integrally therewith. The driven gear 15a and the drive gear 30 of the drive shaft 32 to which power is input are configured to be driven and rotated by engagement.

The delivery roll R has a driven gear 15a at one end.
A total of six partial rolls r1 to r3 having three types of widths and two types of depths are externally fitted to the hollow rotary shaft 15 in which the left and right sides are formed so as to integrally rotate. The first partial rolls r1 and r1, the second partial rolls r2 and r2 second from the left and right ends, and the third partial rolls r3 and r3 of the center 2 are set in this order so that the left and right widths of the recesses 24a become wider. I am doing it. Further, each recess 24a is partitioned in the axial direction by the partition walls 50 and the partition walls 24b at six places formed on only one side of each of the partial rolls r1 to r3. still,
Reference numeral 51 is a brush that acts on each of the partial rolls r1 to r3.

As shown in FIGS. 2, 3, 5 and 6, the boss portion of the roll case (an example of casing) 16 surrounding the three fertilizer feeding mechanisms 25 (the "drive shaft bearing" in claim 6).
One example) A drive shaft 32 having a hexagonal cross section over 16a
Is rotatably supported, and the drive gear 30 described above is fitted onto the drive shaft 32 so as to be relatively rotatable. The shift rotator 31 is externally fitted to the drive shaft 32 so as to rotate integrally and slidably, and is provided with a spring 35 for urging the shift rotator 31 toward the engagement side of the gear 30. The shift rotator 31 resists the spring 35. In order to disengage 31 from the drive gear 30,
A shift member 36 which is swingable about an axis P1 is provided. That is, by pulling the wire 38, the shift member 3
6 to compulsorily oscillating, rotational power of the drive shaft 32 have configured fertilization clutch for blocking being transmitted to the feeding mechanism 25.

As shown in FIGS. 1 and 3, the seedling planting device 7
A PTO shaft 29 that transmits power to the PTO shaft 29 is extended from the transmission case 4, and a transmission case 28 that extracts power from the PTO shaft 29 is externally fitted to the PTO shaft 29.
A pair of drive arms 34 having different phases are provided on both sides of the drive arm 8. As shown in FIGS. 1, 2, and 3, a one-way clutch 33 is fitted onto a drive shaft 32, and a drive arm 34 and an arm of the one-way clutch 33 (an example of a driven arm) 33.
and a are connected by a link rod 37.

A bearing (an example of "supporting bearing" in claim 6) 27 for rotatably supporting the drive shaft 32 at a position just beside the one-way clutch 33 is provided, and the bearing 27 is supported by the support frame 14. Is supported by. That is, since the bearing 27 is provided in a portion of the drive shaft 32 that receives almost all the drive load, the drive shaft 32 is provided.
It is designed to be driven to rotate without bending.

As shown in FIGS. 1 and 2, the blower 20 and the motor 22 for driving the blower 20 are supported at the end of the support frame 14, and the wind generated by the blower 20 is supplied to each funnel portion 26. A blower duct 39 in the form of a pipe is provided so as to extend sideways from the blower 20 along the support frame 14. As shown in FIG. 3 to FIG. 5 and FIG. 9, in the two funnel portions 26 connected to the lower portion of the fertilizer feeding mechanism 25, the blower intake port (an example of an intake path) 26 a of the funnel portion 26 is provided with a seal rubber 43. It is inserted into the blower duct 39 via.

The blower duct 39 will be described in more detail. The blower duct 39 has four partial ducts 44 provided for each of the two-line-integrated feeding portions K, which are adjacent to each other, and the partial duct 44.
The blower case 20a and the blower case 20a are detachably connected to each other via a rubber connecting hose 45. In other words, the four connecting hoses 45 and the four partial ducts constitute the blower duct 39, and the end of the endmost partial duct 44 is closed by the cap 46. Also, FIG.
As shown in FIG. 7, the blower duct 39 is designed to be located substantially rearward of the front end of the roll case 16 in a side view, and has a front-rear length of a feeding mechanism 25 portion including a discharge hose 42 described later. It is designed to be compact.

With the above structure, the rotary case 9 of the seedling planting device 7 is rotationally driven by the power of the PTO shaft 29, and the pair of planting claws 10 alternately take out the seedlings from the seedling table 12 and plant them on the rice field. Planting work of seedlings is performed.
At the same time, the reciprocating motion of the linkage rod 37 due to the rotary motion of the drive arm 34 of the transmission case 28 is converted into the rotary motion by the one-way clutch 33, and the rotary shaft 15 is intermittently rotationally driven via the drive shaft 32. It

As a result, as shown in FIGS. 5 and 6,
The fertilizer enters the recess 24a of the feeding roll R from the fertilizer hopper 17, and the fertilizer is fed to the funnel portion 26 by the intermittent rotation of the drive shaft 15. Then, high-pressure air from the blower 20 is supplied to the funnel portion 26 via the partial duct 44, and fertilizer is rapidly supplied to the grooving device 18 through the fertilizing hose 19 by the high-pressure wind, and the grooving device 18 By this, fertilizer is sent to the ditch formed on the rice field and fertilization work is performed.

Then, the two bolts 47, 47 are pulled out to separate the fertilizer hopper 17 and the roll case 16, and the support frame 14 and the roll case 16 are separated by the bolt operation, and the left and right connecting hoses 45 are separated. , 45
It is possible to remove the roll case 16 and the partial duct 44 in an integrated state by removing and operating.

As shown in FIG. 3, the one-way clutch 3
In the third arm 33a, the connecting position of the link rod 37 can be changed. By changing the connecting position of the link rod 37 to the arm 33a in this manner, the swing angle of the arm 33a with respect to the reciprocating motion of the link rod 37 is changed, and the rotation speeds of the drive shaft 32 and the feeding roll R are changed. The amount of fertilizer to be fed can be adjusted.

As shown in FIGS. 5 and 6, first to third partial shutters 40A, 40 are provided on the upper side of the feeding roll R.
A shutter 40 composed of B and 40C is arranged so that it can be inserted and removed freely. Thereby, for example, when the shutter 40 is inserted into the first and second partial rolls r1 and r2, the fertilizer enters only the recesses 24a of the remaining third partial roll r3, and the fertilizer to be fed out becomes small. And if all the shutters 40 are removed,
Since the fertilizer enters the concave portions 24a of all the partial rolls r1 to r3, a large amount of fertilizer is fed. By arbitrarily inserting and removing the shutter 40 in this manner, the amount of fertilizer to be fed can be adjusted.

Each clutch (not shown) which can freely transmit power to and transmit power from one planted transmission case 8 (a pair of rotary cases 9), and each line which transmits and cuts transmission of each clutch. A clutch lever (not shown) is provided. As shown in FIG. 6, the L-shaped operation arm 36 is swingably supported around the axis P1 of the fixed portion of the fertilizer feeding section K, and the end of the operation arm 36 engages with the shift member 31. Each wire clutch lever and the operation arm 36 are connected by a wire 38.

As a result, for example, when each thread clutch lever of the right planted transmission case 8 is operated to the transmission disengagement side, and each thread clutch of the right planted transmission case 8 is operated to disengage the transmission, the right planted transmission case 8 is transmitted. The pair of rotating cases 9 of the case 8 are stopped, the two right planting strips are not planted, and the drive shaft 1 of the fertilizer feeding section K corresponding to the two right planting strips.
5 stops, and the fertilizer supply to the two right planting lines is stopped.

As shown in FIGS. 5 and 3, a switching plate 41 is supported on the funnel portion 26 so as to be swingable around the horizontal axis P2, and a discharge hose 42 is provided downward from the lower side of the switching plate 41. It has been extended. Switching plate 4 during normal planting work
1 is operated in the closed position shown by the solid line in FIG. 5, and the fertilizer from the fertilizer hopper 17 is fed to the funnel portion 26. Blower 2 when normal planting work is completed.
0 and the seedling planting device 7 (PTO shaft 29) are stopped and the switching plate 41 is operated in the open position, the fertilizer hopper 1
The fertilizer remaining in No. 7 enters the discharge hose 42 and is discharged.

Incidentally, as shown in FIG. 5, an input port 48 formed in the upper part of the funnel portion 26 on the rear side of the feeding roll R.
Is for mixing the chemicals fed from a drug delivery device (not shown) with fertilizer and supplying it underground from the grooving device 18,
If the drug delivery device is not installed, the cap 4 as shown
Block at 9.

By the way, the feeding section K has two funnel sections 2
The two-row integrated type is basically provided with 6, 26 and two sets of roll cases 16 corresponding to the width, but the two feeding parts K at the center of the left and right sides are provided with one funnel in order to fit for six articles. Part 2
6 is not working. That is, as shown in FIG. 7, one set of three partial rolls r1 to r3 is omitted, and the two fertilizer hoppers 21 and 21 in the left and right center are omitted.
In No. 1, the inclined bottom surface 21a is additionally formed to have a supply port width corresponding to one set of the partial rolls r1 to r3.

Therefore, only one fertilizer hose 19 is attached, and as shown in FIG. 8, the capacity of the two central fertilizer hoppers 21 is set to half that of the left and right hoppers 17, and four sets Fertilizer applicator A for 6 lines at feeding section K
Are configured.

[Other Embodiments] Although not shown, the roll case 16 and the partial duct 44 may be integrally formed, or may be integrated in advance by a bolt or the like, in which case the funnel at the time of attachment / detachment as a feeding mechanism. The insertion and connection portion between the portion 26 and the partial duct 44 does not move out of alignment, which facilitates the attachment / detachment operation.

[Brief description of drawings]

[Figure 1] Side view of a riding rice transplanter

[Figure 2] Plan view of a riding rice transplanter

FIG. 3 is a rear view of the fertilizer application part.

FIG. 4 is a side view of a partially cutout showing a power transmission structure to a feeding portion.

FIG. 5 is a sectional side view showing a structure of a feeding mechanism portion.

FIG. 6 is a sectional view showing a drive structure of the feeding mechanism.

FIG. 7 is a cross-sectional view showing a structure of a feeding portion for one line.

[Figure 8] Plan view of the fertilizer hopper

FIG. 9 is a cross-sectional plan view showing the structure of a ventilation duct.

[Explanation of symbols]

15a Driven gear 16a, 27 bearings 17,21 hopper 19 Powder transfer route 20 Wind generator 24a recess 25 Feeding mechanism 26 Starting point of powder transfer route 26a Uptake route 30 drive gear 32 drive shaft 33a Driven arm 39 air duct 44 partial duct 45 connecting hose K feeding section R feeding roll

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Zensei Nakagawa 64 Ishizukita-cho, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Inventor Rinsho Sakano 64, Ishizukita-machi, Sakai City, Osaka Prefecture In-house (72) Inventor Tetsuya Matsumura 64 Ishizukita-machi, Sakai-shi, Osaka In-house Kubota Co., Ltd. (56) References JP-A-9-308326 (JP, A) JP-A-9-131103 (JP, A) ) Japanese Patent Laid-Open No. 7-203733 (JP, A) Actually developed 60-133730 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01C 15/00-23/04 A01C 11 / 00 302

Claims (4)

(57) [Claims] 1. A plurality of feeding units provided with a hopper for storing the granular material and a feeding mechanism for feeding the granular material fed from the hopper to a starting end portion of the granular material transfer path by a predetermined amount each in parallel. In the powder and granular material feeding device, the wind generated by the wind power device is distributed and supplied to the plurality of the starting end portions through the air duct, and the powder and granular material fed to the starting end portion is fed by the wind force. The air duct is configured so as to be sent to the powder / granular material transfer path, and the air duct is provided between each of the feeding parts, and a partial duct between the adjacent partial ducts.
Consists of a connecting hose that is detachably connected to
A certain granular material feeding device. 2. A two-row structure including the starting end portion provided with the feeding portion for each of the two powder and granular material transfer paths, and two intake passages connecting the both starting end portions and one of the partial ducts. granular material feeding apparatus according to 請 Motomeko 1 that make up the integrated. 3. The powdery- or granular-material feeding device according to claim 1, wherein the partial duct is integrally attached to the corresponding feeding portion. Wherein said air duct, below the casing surrounding the feed mechanism, and claims 1-3 is disposed in a state that fits substantially within longitudinal width of the casing
The powder or granular material feeding device according to any one of the above .