JPH0715377Y2 - Floating device in rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to the structure of a rice transplanter to which a chemical spraying device can be detachably mounted.

[Conventional technology]

The seedling work by the rice planting mechanism of the rice transplanter is preferably performed in a place where the field scene is evened out.
As shown in Japanese Patent No. 6433, there is disclosed a configuration in which a flat plate is provided so as to project in the lateral direction of the float.

On the other hand, as disclosed in Japanese Utility Model Laid-Open No. 59-11609, at the same time as rice planting while traveling on a field scene, in order to spray a chemical such as a fertilizer or a herbicide near the seedling planting site,
The discharge pipe of the drug spraying device is made to face behind the groove made in the field scene adjacent to the left or right along the seedling planting line. Therefore, in the front part of the leveling part projecting outward in the lateral direction of the float, an attachment part for the grooving body and the drug discharge pipe is formed in a substantially rectangular notch in a plan view. Then, in the case of chemical spraying, a groover equipped with a nozzle for supplying fertilizer is attached to the mounting portion, while when the chemical is not sprayed, an auxiliary float is attached to the mounting portion instead of the grooving tool. Is proposed.

Further, in Japanese Utility Model Laid-Open No. 60-156907, it is proposed to attach a grooved member or an attachment portion of a drug discharge pipe to the outer surface of the leveling portion that projects laterally outward of the float. There is.

[Problems to be Solved by the Invention]

However, in the above-mentioned Japanese Utility Model Publication No. 59-11609 and Japanese Utility Model Publication No. 60-156907, with respect to the seedling planting site on the side of the float, the groove portion for spraying the drug is located outside. Since the setting is made, there is a problem in that the flat portion has a large size to be projected to the outside of the float, and the float becomes large. Further, in these techniques, it is not planned to backfill the groove after spraying the drug, and there is a problem that it is difficult to fix the sprayed drug in the field.

The present invention aims to solve these conventional problems.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention provides a rice transplanter having a seedling planting mechanism above a float that slides in a field, and a chemical spraying device such as fertilizer can be mounted on the side of the float. In, the flat body for leveling the front of the seedling planting mechanism by the seedling planting mechanism is projected integrally in a substantially triangular shape in plan view, and the front half of the flat body is made hollow. On the lower surface of the front half, an attachment part of the grooving body for forming a drug spraying groove is formed on the inner side of the seedling planting position in the float width direction, while the rear half of the leveling body is evenly formed. A flat plate is formed in a substantially triangular shape in a plan view so as to extend over a rear edge of the front half portion that extends substantially parallel to the width direction of the float and a base portion that is parallel to the traveling direction of the float, and the flat plate rear portion has the above-mentioned triangular shape. Removal of soil plate to fill the groove formed by the grooving body Forming a rake portion, this flat plate over the range surrounded by the trailing edge portion of the front half portion, the portion of the base portion parallel to the advancing direction of the float, and the front portion of the attachment portion of the soil culture plate, It is configured to be detachable from the float.

[Operation and effect of device]

According to the configuration of the present invention, when it is not necessary to mount the chemical spraying device, it is only necessary to level the field scene in advance with the flat body on the side of the float and then to plant seedlings by the seedling planting mechanism.

Further, when it is desired to mount the medicine spraying device, a rear edge of the front half portion extending substantially parallel to the width direction of the float and a root portion parallel to the traveling direction of the float are provided in the rear half portion of the flat body. As shown in the figure, the flat plate formed in a substantially triangular shape in plan view is separated from the float, the grooving body is attached to the lower surface of the front half of the flat plate, and the discharge pipe in the drug spraying device is arranged above the separated flat plate. By doing so, chemicals such as fertilizers can be sprayed on the grooves formed by the grooving body, while leveling work in the field scene can be secured by the first half of the leveling body.

In addition, it can be backfilled with the cultivating plate attached to the lower surface of the rear portion of the above-mentioned flat plate, so that the drug sprayed in the groove does not flow out and the drug spraying effect can be improved.

And, since the groove formed by the groove-making body is located in the widthwise inner side of the float rather than the seedling planting portion, it is not necessary to increase the amount of projecting the flat body laterally of the float, It also has the effect of avoiding the need to increase the size of the.

〔Example〕

An embodiment of the present invention will now be described with reference to the drawings. In FIG. 1, a transmission case 2 has a front portion, an engine base 3 having a downward U-shaped cross section, which serves as a front frame of an airframe, and a rear portion via a frame 4. A machine body 6 in which the transmission cases 5 are detachably connected, a pair of left and right traveling wheels 7, 7 on both left and right sides of the machine body 6, a center float 8 arranged longitudinally on the lower surface of the machine body 6, and a mission case. 2 side-projecting L-shaped side frames 9 and 9 projecting from the sides of the traveling wheels 7 and surrounding the front and outer sides of the traveling wheels 7 and 7, and disposed below the rearwardly extending portions of each side frame 9. A walk-behind rice transplanter comprising side floats 10 and 10 is shown.

The rear part of the side frames 9, 9 is the seedling stand 11 Support rail 1 at the lower end
2 and a pair of left and right steering handles 1 from the support rail 12
3, 3 and 13 project backward in a slanting upward shape, and a rearward tilting type seedling table 11 is mounted on the upper surfaces of the pair of steering handles 13 and 13 so as to be capable of reciprocating left and right.

On the left and right sides of the transmission case 5 and on the rear part of the side frame 9, a seedling planting mechanism 1 for vertically moving between a seedling stand 11 and a field scene.
4,15 are attached, and in the respective left and right sides of the center float 8 and the insides of the side floats 10,10 in the respective seedling planting mechanisms 14,15, a field scene located behind the levelers 62, 63 described later. It is constructed so that seedlings can be planted.

Left and right swing cases 18a, 1 to which the traveling wheels 7,7 are attached
The base end of 8b is rotatably fitted to the front end tubular member 9a of the side frames 9 and 9, and the belt 21 is transmitted from the engine 19 on the engine base 3 to the pulley 20 on one side of the mission case 2 to 2 is driven to rotate by the power from the transmission mechanism to drive the traveling wheels 7. Further, the seedling planting mechanism 15 is driven from the mission case 2 via the transmission shafts 16, 16 'in the side frame 9.

Reference numerals 17a, 17b are a pair of left and right float-shaped sensors arranged in front of the side floats 10, 10, and the left and right sensors 17a, 17b are located rearward of the front end of the center float 8 in plan view. To do.

A front end of each of the side frames 9 is extended through a connecting bracket 24 from a rear end of a bumper 23 having a substantially U-shaped plan view, the front end of which is fixed to the front end of the engine base 3. L attached to the connection bracket 24
The support member having a character shape has a link 3 protruding upward from the front end of the side float 10 and the rear ends of the sensors 17a and 17b so as to be rotatable.
Each of 5,36 is supported so that it can move up and down.

The front end portions of both the float-shaped sensors 17a and 17b are pivot members 37
It is mounted on the front side of the bumper 12 through the above so as to be rotatable up and down, and is associated with the switching valve 48 of the hydraulic unit 39 through the rolling sensor interlocking mechanism 38, by the hydraulic pressure from the hydraulic pump 46 in the hydraulic circuit 40. The rolling hydraulic cylinder 43 is driven.

In addition, a seedling planting depth adjusting rod 4 provided between the steering handles 13 and 13
Center float 8 and side floats 10 and 10
It is configured to be pivotally attached to the rear upper surface so that the depth of seedling planting in a field scene can be adjusted by the seedling planting mechanisms 14 and 15.

The left and right swing cases 18a, 18b are vertically moved up and down in the same direction to raise and lower the left and right traveling wheels 7, 7 simultaneously, and the double-acting lifting hydraulic cylinder 42 and the left and right traveling wheels 7, 7 are vertically moved. Rolling control hydraulic cylinder 43 for reverse lifting
And the left and right swing cases 18a, 18b via the lifting mechanism 44.
Connected to.

Reference numeral 55 denotes an elevating sensor that operates a rotary type switching valve 47 that switches the hydraulic pressure to the elevating hydraulic cylinder 42. The elevating sensor 55 is an arm whose base end is rotatably attached to the engine base 3. A trochanter 57 at the tip of 56 is brought into contact with the upper surface of the center float 8, while a lever 58 attached to the base end of this arm 56 is connected to the shaft of a rotary type switching valve 47.

Reference numeral 25 denotes a bonnet cover body that covers the fuel tank 26 of the engine 19 and the transmission case 2 from above, and the rear portion of the bonnet cover body 25 is fixed to a bracket projecting upward from the frame 4 of the machine body 6.

Reference numeral 27 is a rear cover body that covers the upper portion of the transmission case 5 behind the frame 4, and is also used as a guide portion of the traveling speed changing lever 34.

An intermediate cover body 28 which is detachable from the bonnet cover body 25 and the rear cover body 27 has a downward U-shaped cross section, and each of the cover bodies 25, 27 and 28 is made of glass fiber reinforced plastic, and has an intermediate shape. The front end and the left and right rear parts of the cover body 28 can be detachably attached to the mating cover body by bolts or the like.

Reference numerals 30, 31, and 31 are chemical spraying devices for spraying fertilizers and the like in the vicinity of the seedling sites planted by the seedling planting mechanisms 14 and 15, and the chemical spraying device 30 is provided after removing the intermediate cover body 28. It is arranged in a space and is detachably supported by a support bracket 32 protruding from the frame 4 and the transmission case 5. The left and right drug spraying devices 31, 31 are detachably mounted on the left and right side frames 9, 9 by support brackets (not shown), and the power of each drug spraying device 30, 31, 31 is driven by the seedling planting mechanism 14, 15. It is transmitted from a driving unit such as the above through a link mechanism.

The lower end of the discharge pipe 33 extending from the lower surface of each of the chemical spraying devices 30 and 31 is a guide body having a U-shaped cross section in which a screw 65 is fixed to the rear end of a groove body 64 which is attached to the lower surfaces of the sensor float 8 and the side floats 10 and 10. Attached to the upper end of 66, the lower end of the guide body 66,
The center float 8 and the side floats 10 and 10 are opened at the positions of the separated flat bodies 62 and 63 which will be described later.

FIG. 5 is a plan view of the center float 8 and the side float 10 made of synthetic resin. Reference numeral 60 is a hole formed vertically through the center float 8 facing the lower surface of the mission case 2. , On the left and right sides of the hole 60,
Recesses 61, 61 are formed by recessing the upper surface of the center float 8.

Therefore, even if the lower surface of the mission case 2 and the center float 8 approach each other vertically due to the holes 60, they do not interfere with each other, and due to the presence of the recesses 61, 61, the swing arm 18a pivotally attached to the front end tubular portion 9a of the side frame 9 is provided. Therefore, it is possible to avoid interference with the base end (boss) of 18b.

The flat body 62, 63 integrally projecting to the side of the center float 8 and the side floats 10, 10 includes front half portions 62a, 63a having large vertical dimensions which are integral with the hollow portion of each float, and the front half portions. And a fin-shaped flat plate 62b, 63b, which is a rear half portion extending in a substantially triangular shape in a plan view, from the flat body 62,
Each underside of 63 can be grounded to the field scene.

Reference numerals 67 and 68 denote attachment portions of the grooving body 64 formed by recessing upwards in the front half portions 62a and 63a of the respective leveling bodies 62 and 63, and the attaching portion 67 is attached to the upper surface of the grooving body 64 for connection. Insertion portions 67a such as mounting bolts 70 protruding upward from the auxiliary plate 69, longitudinal guide grooves 67b into which the connection auxiliary plate 69 is fitted, and the connection auxiliary plate 6
9 A left and right longitudinal regulation groove 67c into which a posture regulation piece 71 bent upward from the tip is fitted. The mounting portion 68 on the side float 10 is also the mounting portion on the center float 8
The configuration is substantially the same as 67.

Mounting parts 6 on both left and right sides of the center float 8
7,67 has an insertion section 67a formed in an oval shape in plan view so that the groove 64 can be attached at a position displaced by a dimension (H1) from side to side, and a pair of left and right longitudinal guides are formed on the insertion section 67a. The groove portions 67b, 67b are communicated with each other, and the pair of guide groove portions 67b, 6b
The front and rear ends of the 7b are formed by connecting the left and right regulating grooves 67c to each other.

Then, as shown in FIG. 5, the groove formed by the grooving body 64 is set so as to be located inside the side surfaces of the floats 8 and 10 with respect to the seedling planting site.

In addition, the center float 8 both sides and side floats
Flat plate 62b, 63b in the rear half of the flat body on the side of 10, 10
A rear edge of the front half portion extending substantially parallel to the width direction of the floats 8 and 10, and forming a fin shape in a substantially triangular shape in a plan view so as to extend over a base portion parallel to the traveling direction of each float,
At the rear of each flat plate 62b, 63b, a mounting portion of the soil plate 77 for filling the groove formed by the groove body 64 is formed,
On the lower surface side of the flat plates 62b, 63b, over the range surrounded by the trailing edge part of the front half part, the part of the root part parallel to the moving direction of the float, and the part of the front part of the attachment part of the soil plate. , To form a weakening line so that it can be separated from the float.

The grooving body 64 has a triangular shape which is inclined downward from the front end toward the rear in a side view, and the communication auxiliary plate 69 and the grooving body 64 are provided.
The upper surface is detachably fastened with bolts 73 and 74, and the nut 75 welded to the lower surface of the auxiliary connecting plate 69 is a grooved body 64.
Fitting in the recess on the top surface, the mounting bolt 70 is
It is a structure that can be fastened to the nut 75 via a spacer tube 76 arranged inside.

Incidentally, the soil plate 77 for covering the soil such as fertilizer and the like discharged from the chemical spraying device 30, 31 in the groove formed in the field scene by each of the grooving bodies 64 is the flat plate 62b, 63b. It is mounted from the rear through bolts or the like through mounting holes provided at the site. Then, synthetic resin plugs 79, 79 are integrally attached to the upper end of the mounting hole 78 and the upper end of the insertion portion 67a, respectively, from the lower side of the mounting hole 78 and the insertion portion 67a. The plug 79 can be separated by pushing up a bolt or the like.

With this configuration, when the drug spraying devices 30 and 31 are not mounted, the intermediate cover body 28 is covered with the rear end of the bonnet cover body 25 and the side portion of the rear cover body 27 by bolt connection or the like.

To install the chemical spraying devices 30 and 31, the intermediate cover 2
When 8 is removed, a large space is formed between the front and rear cover bodies 25 and 27 and the pair of left and right traveling wheels 7 and 7 in a plan view. Can be placed at.

Of the flat bodies 62, 62, 63, 63 on the left and right sides of the center float 8 and on the inner sides of the left and right side floats 10, 10, the latter half flat plates 62b, 63b are substantially trapezoidal in plan view along the weakening line 72. Disconnect.

At this time, seedling planting points 80, 80 by the seedling planting mechanism 14, 15
The seedling planting interval (H2), which is the left-right interval of the center float 8, is the center of the center float 8 of the attachment parts 67,67 of the grooving bodies 64,64 on both the left and right sides of the center float 8 when spraying chemicals in response to a narrow case. The connecting auxiliary plate 69 is attached to the portion close to the line, and at this time, the guide body 66 attached to the rear end of the groove body 64 is
It will be located at the position of the symbol A in FIG.

When the grooving bodies 64, 64 are attached to the outer mounting portions 67, 67, they correspond to the case where the seedling planting interval (H3) is wide, and the guide body 66 is located at the position of symbol B in FIG. To do. By forming the weakening lines 72 in the longitudinal direction of the float in the front-rear direction (the part of the base portion parallel to the moving direction of the float) in two rows, the separation width dimension of the flat plate 62b can also be adjusted. .

Since the attitude regulating plate 71 at the tip of the connection assisting plate 69 fits in the left and right longitudinal control grooves 67c, 68c on the bottom surface of the float, the respective groove bodies 64 are attached to the mounting portions 67, 68 via the connection assisting plate 69, respectively.
70 Although it can be mounted by one piece, the grooving body 64 can be firmly mounted without rattling such as left and right deflection.

Needless to say, the attachment portions 68 of the side floats 10 may be formed in two rows on the right and left sides according to the width of the seedling planting interval.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a side view of a rice transplanter, Fig. 2 is a plan view, Fig. 3 is an enlarged sectional view taken along line III-III of Fig. 2, and Fig. 4 is a rolling control and Hydraulic circuit diagram for lifting control, FIG. 5 is a plan view of the center float and side floats, FIG. 6 is a VI-VI view of FIG. 3, FIG. 7 is an enlarged plan view of the main part of the center float, and FIG. Is VIII in Fig. 7
-VIII sectional view, FIG. 9 is a sectional view taken along line IX-IX of FIG.
FIG. 10 is a sectional view taken along line XX in FIG. 7, and FIG. 11 is XI- in FIG.
XI is a cross-sectional view, and Fig. 12 is an enlarged cross-sectional view of a main part showing a state in which a grooving body or the like is attached to the attachment portion of the center float.
13 is a plan view of FIG. 12 taken along line XIII-XIII, and FIG. 14 is shown in FIG.
It is an XIV-XIV sectional view. 1 ... rice transplanter, 2 ... mission case, 3 ... engine base, 4 ... frame, 5 ... transmission case, 6 ... airframe, 7 ... running wheels, 8 ... center float, 9, 9 ...
… Side frame, 16,16 ′ …… Transmission shaft, 10,10 …… Side float, 14,15 …… Seedling planting mechanism, 11 …… Seedling stand, 13…
… Steering wheel, 18a, 18b …… Swing case, 17a, 17b
...... Float sensor, 25 …… Bonnet cover body,
32 …… Support bracket, 27 …… Rear cover body, 28 …… Intermediate cover body, 30, 31 …… Chemical spraying device, 33 …… Release pipe, 62,
63 …… flat body, 62b, 63b …… flat plate, 72 …… weakening line, 64
…… Grooving body, 65 …… Screw, 66 …… Guide body, 67,68 ……
Mounting part, 67a… Insertion part, 67b …… Guide groove part, 67c ……
Restriction groove, 69 ... Connection auxiliary plate, 70 ... Mounting bolt, 71 ...
… Attitude control plate, 73,74 …… Bolt, 75 …… Nut, 76…
Spacer tube, 77 …… Boiler plate, 78 …… Mounting hole, 79 ……
Stopper.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yuichi Takeda, 1-32, Chaya-cho, Kita-ku, Osaka, Osaka Prefecture Yanma Agricultural Machinery Co., Ltd. (72) Hideki Matsuoka, 1-32, Chaya-cho, Kita-ku, Osaka-shi, Osaka No. Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Satoru Okada 1-32, Chayacho, Kita-ku, Osaka City, Osaka Prefecture (56) Within Yanmar Agricultural Machinery Co., Ltd. (56) Bibliography Sho 59-11609 (JP, U) 60-156907 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A rice transplanter comprising a seedling planting mechanism above a float gliding in a field scene, and a chemical spraying device such as fertilizer can be attached to the float.
A flat body for leveling the front of the seedling planting part by the seedling planting mechanism is projected in a substantially triangular shape in plan view and integrally projected,
The front half of the flat body is formed in a hollow shape, and the lower surface of the front half is provided with an attachment portion of a grooving body for forming a drug spraying groove at an inner portion in the float width direction from the seedling planting portion. On the other hand, the flat plate of the latter half of the flat body is formed into a substantially triangular shape in a plan view so as to extend over the rear edge of the front half extending substantially parallel to the width direction of the float and the base portion parallel to the traveling direction of the float. The rear surface of the flat plate is provided with an attachment portion of the soil plate for filling the groove formed by the groove body, and the flat plate is attached to the trailing edge portion of the front half and the advancing direction of the float. Over the range surrounded by the part of the base part parallel to and the part of the front part of the mounting part of the soil culture board,
A float device in a rice transplanter characterized by being detachable from the float.