JP2002027895A - Medicinal agent-spraying device of sulky rice-planter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medicinal agent-spraying device, capable of performing a medicine-treating work on a seedling mat from the upper direction of a seedling-carrying stand of a sulky rice-planter in performing the work of planting the seedlings. SOLUTION: This medicinal agent-spraying device of a sulky rice planter is characterized by arranging a medicinal agent-spraying device M in a position opposing to a seedling mat-carrying surface 43 of the seedling-carrying stand 25, synchronously moving and linking a driving mechanism B of the above device M with a seedling-delivering belt 44 of the seedling-carrying stand 25 and also synchronously moving the seedling-delivering belt 44 with a unit clutch L for performing the transmission and cutting off of a power to the same belt 44 so as to be able to perform the cutting off and activation of the driving.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chemical spraying device for a rice transplanter for riding.

[0002]

2. Description of the Related Art Conventionally, planting seedlings grown in a nursery box in a field using a rice transplanter has become a modern mechanized seedling planting method.

[0003] In this case, as a method of spraying chemicals for controlling the main pests occurring before heading, a method of spraying an osmotic agent into a nursery box immediately before planting rice and controlling the pests generated after transplanting is adopted. It had been.

[0004] In recent years, admixtures that simultaneously prevent pests and the like that occur after the middle stage of rice cultivation, which are not targeted by box application drugs, that is, long-lasting box application agents have also emerged.

[0005] However, since this long-lasting box application needs to be carefully sprayed in a predetermined amount so as to prevent unevenness in the seedling mat stored in the seedling box immediately before rice transplanting, it is often used immediately before rice transplanting. Work such as spraying quantitatively carefully
It was very laborious and cumbersome.

[0006]

As described above, the operation of applying a predetermined amount of medicine to the seedling mat stored in the nursery box immediately before the rice transplanting operation is cumbersome, and the operation of planting during the busy rice transplanting operation is complicated. Applying the drug to nursery boxes on site was also inefficient.

[0007] In view of the above, the present invention does not solve the above-mentioned drawbacks by using a technique that allows a drug application operation to be applied to a seedling mat from above a seedling table of a riding rice transplanter during planting operation in which seedlings are planted using a rice transplanter. It is assumed that.

[0008]

According to the present invention, a chemical spraying device is provided at a position facing a seedling mat mounting surface of a seedling mounting table.
The drive mechanism of the device is linked to the seedling feed belt of the seedling mounting table, and the seedling feed belt is configured to intermittently drive in conjunction with the unit clutch that transmits and disconnects power to the belt. An object of the present invention is to provide a chemical spraying device for a rice transplanter for riding, which is characterized in that:

[0009] The seedling feed belt of the seedling mounting table is also characterized in that it is interlocked with the mechanism for adjusting the amount of seedlings taken out.

A medicine dispensing section of the medicine spraying device;
The timing belt can be replaced by linking the seedling feed belt with the timing belt, and the timing pulley can be replaced.The replacement of the timing pulley also changes the drug delivery amount of the drug sprayer. Has features.

[0011] Further, a resistance rod crossing the seedling mat is disposed at a height in the middle of the height of the seedling near the spraying portion of the chemical spraying device, so that the seedlings can be sown just before the spraying of the chemical. It is also characterized by the fact that

Another feature is that a medicine drop passage is provided below the medicine dispensing portion of the medicine spraying device so that air can flow into the passage.

[0013] Further, the medicine spraying device arranged on the side opposite to the seedling mounting table surface can be displaced to a position as close as possible to the seedling mat during the work of performing the medicine spraying operation, and the non-working operation without performing the medicine spraying operation is performed. At times, it is also characterized in that it can be displaced to a position separated from the seedling mat.

[0014]

In the present invention, a drug spraying device is disposed at a position facing a seedling mat mounting surface of a seedling mounting table. The driving is performed via a driving roller of a seedling feed belt and an interlocking belt interlocked with a unit clutch. It is not necessary to perform the operation of stopping feeding at every step, and the chemical is sprayed directly on the seedling mat on the seedling mounting table. There is no need to carry out the work, and it is possible to spray the medicine at the same time as the seedling planting work.

[0015] The drive roller of the seedling feed belt is linked to the mechanism for adjusting the amount of seedling picking. The amount of operation of the seedling feed belt is also changed in response to the change in the amount of seedling picking. By changing the amount of spraying, the agent can be sprayed uniformly regardless of the amount of vertical planting.

Further, the timing belt is suspended between the medicine feeding section and the roller of the seedling feed belt, and the timing pulley on which the timing belt is suspended is replaced with a timing pulley having a different size, so that the amount of operation of the medicine feeding section is increased. Can be adjusted to easily and reliably adjust the delivery amount of the medicine.

Further, by providing a resistance bar across the seedling mat near the front of the spraying portion of the chemical spraying device, the seedlings are sown by the resistance bar immediately before the spraying of the drug, and the chemicals from the spraying portion are transferred to the seedlings. It is easy to spray the seedling mat floor directly without interference.

Further, since air can flow into the medicine drop passage, the air can help the medicine to flow down.
The agent can surely reach the soil of the seedling mat.

Further, since the position of the medicine spraying device is displaced between the time when the medicine is sprayed and the time when the medicine is not sprayed, the medicine can be sprayed efficiently and the remaining seedling mat can be easily taken out.

[0020]

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

FIG. 1 shows a riding rice transplanter A having a medicine spraying apparatus M according to the present invention. The riding rice transplanter A has a planting section 2 at a position rearward of a traveling section 1 via an elevation linking mechanism 3. The fertilizer applicator N is mounted behind the traveling section 1. Further, a medicine spraying device M is mounted behind the fertilizer application device N.

As shown in FIG. 1, the traveling unit 1 has a prime mover unit 5 at the front and a driving unit 6 at the rear above the vehicle body frame 4. In the middle part, left and right front wheels 7, 7 are provided via a front axle case 8, and left and right rear wheels 9, 9 are provided at a rear portion via a rear axle case 10.
A transmission case 11 is disposed between the front axle case 8 and the rear axle case 10.

An engine 12 is mounted on the motor unit 5, and a transmission case 11 is interlocked to the transmission 12 via a transmission case transmission shaft 13.
A rear axle case 10 is connected to the transmission case 11 and a front axle case 8 is connected to the transmission case 11 via a front axle case transmission shaft 14. Reference numeral 15 denotes a hood.

The operating section 6 has a steering column 16 integrally formed at the rear of the hood 15, a handle 18 attached to a handle support shaft 17 protruding from the upper end of the column 16, and a driver's seat behind the handle 18. 19 are arranged and constituted.

In FIG. 1, reference numeral 20 denotes a body frame 4.
The vehicle body template is extended over the vehicle body, and the vehicle body template 20 includes a step portion 20a projecting to the left and right of the bonnet 15, a floor portion 20b formed between the steering column 16 and the driver's seat 19, and a driver's seat 19 support portion. 20c, a rear step portion 20d formed to extend rearward from the support portion 20c, and a rear fender 20e formed on left and right side edges of the step portion 20d.

As shown in FIG. 1, the planting section 2 connects the front end portions of a plurality of planting transmission cases 22 extending in the front-rear direction to the planting transmission case 21 and connects the planting transmission cases 22 with each other. Are arranged at regular intervals in the left-right direction, and planting claws 24 are attached to the left and right sides of the rear end of each planting transmission case 22 via rotary cases 23, respectively. A seedling table 25 for five-row planting is placed above the attached transmission case 22, and at a position below each planted transmission case 22,
Each has a float 26 attached.

In FIG. 1, reference numeral 27 denotes a groove generator attached to the lower surface of the middle part of the float 26, and 28 denotes a planting input shaft 28 projecting forward from the planting transmission case 21. Is a PT projecting rearward from the transmission case 11.
The O-shaft 29 is interlocked and connected via a plantation transmission shaft 30.

In this manner, the planting section 2 is capable of performing the five-row seedling planting operation with the five planting claws 24 and the five-row groove forming operation with the five groove generators 27. .

The raising / lowering connecting mechanism 3 is provided between the rear end of the vehicle body frame 4 of the traveling section 1 and the front end of the planting mission case 21 of the planting section 2 to move the planting section 2 up and down. So that it can be activated.

As shown in FIG. 1, five fertilizer applicators N are provided on the rear end of the body frame 4, and a fertilizer hopper 37 for containing fertilizer and a certain amount of fertilizer in the fertilizer hopper 37 are provided. The fertilizer feeding section 38 that feeds out one by one, and the fertilizer feeding section 38
The fertilizer is provided with a fertilizer feeding section 40 for feeding the fertilizer in the fertilizer hose section 39 to the fertilizer groove side for guiding a certain amount of fertilizer to be further fed to the fertilizer groove provided in the planting section 2.

In FIG. 1, reference numeral 41 denotes a hopper body;
Indicates an open / close lid.

In the riding rice transplanter A for five-row planting with the fertilizer applicator N configured as described above, the feature of the present invention is that the rice seedling table 25 is located at a position facing the seedling mat mounting surface 43 of the seedling mounting table 25. The medicine spraying device M is provided, and the driving mechanism B of the device M is connected to the seedling feed belt 44 of the seedling mounting table 25 in an interlocking manner. To be able to do.

That is, as shown in FIG. 2, a chemical hopper 45 is provided at a position facing the seedling mat mounting surface 43 of the seedling mounting table 25.
And a medicine ejection cylinder 46 connected below the hopper 45, a feed roller 47 provided at the lower end opening 69 of the hopper 45, and an interlock belt 48 interlockingly connecting the feed roller 47 and the seedling feed belt 44. A medicine spraying device M is provided.

Although one chemical spraying device M may be provided above the five-row seedling mounting table 25 in common, or one for each row of the five-row seedling mounting table 25, this embodiment may be used. In the example, as shown in FIG.
There are three medicine spraying devices M-1, M-2, M for two right-hand lines and a medicine spraying device M-3 for one center line.
Reference numeral -3 designates a configuration in which the drug discharge cylinder 46, the feeding roller 47, the interlocking belt 48 connecting the feeding roller 47 and the seedling feeding belt 44, and the like are also independent.

The power of the medicine spraying device M is transmitted from a pulley provided on a roller of the seedling feed belt 44 through an interlocking belt 48. As shown in FIG. There is a case where it is taken from the drive pulley 50 of the roller 49 and a case where it is taken from the floating roller 51 above the seedling feed belt 44 as shown in FIG.

The seedling feed belt 44 is provided for each strip on the back surface of the seedling mounting table 25, is suspended between a driving roller 49 and a floating roller 51, and has a large number of projections on its surface. Seedling stand
The belt 44 is configured so that the surface of the belt 44 is exposed from the belt window 53 cut out at the lower portion of the belt 25.

The seedling feed belt 44 feeds the seedling mat a vertically by one row each time the seedling collection for one row from the seedling mat a is completed. That is, the PTO of the traveling unit 1
A lateral feed shaft 57 is planted on the planting input shaft 28 interlockingly connected to the shaft 29, and is interlockingly connected via the drive shaft 28-1, the transmission chain 28-2, and the interlocking gear 56, and the seedling feed belt 44 is connected to the horizontal feed shaft 57. The drive roller shaft 54 is interlockingly connected via a cam mechanism C. When the lateral feed shaft 57 completes the lateral feed of one row of seedlings on the seedling mounting table 25, the drive roller shaft 54 is rotated by the cam mechanism C. Let
Accordingly, the drive roller 49 and the seedling feed belt 44 rotate, so that the seedling mat a is vertically fed by one row of the seedlings.

The cam mechanism C is composed of an operating cam 64 interlocked with a lateral feed shaft 57 and a cam piece 63 interlocked with a drive roller 49 of a seedling feed belt 44. When a row of seedlings is cut and planted from the table 25, the operating cam 64 rotates and the cam piece 63 engaged with the operating cam 64 rotates, and the driving roller 49 rotates to rotate the seedling feed belt 44. Is transported and the seedling mat a is vertically fed.

Further, between the drive roller shaft 54 for driving the drive roller 49 of the seedling feed belt 44 and the drive roller 49,
Unit clutches L-1, L-2, L-3 are interposed, and the power from drive roller shaft 54 is applied to seedling feed belt 44 by the intermittent operation of unit clutches L-1, L-2, L-3. It is configured to be transmitted and disconnected.

That is, as shown in FIG. 6, three unit clutch levers K-1, K-2, K-
The three unit clutch levers K-1, K-2, and K-3 are provided with two unit clutches L and L which perform two left and right clutch operations of the five-row seedling mounting table 25. -1, L-2
And the unit clutch L-3, which performs the clutch operation for one central line, is linked to each other, and each unit clutch L is operated by operating three unit clutch levers K-1, K-2, K-3.
-1, L-2, L-3 intermittent operation is performed.

Among the unit clutches L-1, L-2, L-3, the structure of the unit clutch L-3 for performing the clutch operation for one central line will be described.

The unit clutch L-3 includes a seedling feed belt 44
Roller barrel that is integrally inserted into the shaft core of the drive roller 49
49 ′, a drive roller shaft 54 that is freely inserted into the roller shaft tube 49 ′ and is inserted through the shaft core of each drive roller 49 of each seedling feed belt 44 in common, and a roller shaft tube. And a clutch mechanism n interposed between the drive roller shaft 49 'and the drive roller shaft 54. The clutch mechanism n includes a unit clutch lever K-
3, a wire 78, an arm 79 at the end thereof, and a clutch gear interlocked with the drive roller shaft 54 in conjunction with the arm 79.
81.

Therefore, when the input operation of the unit clutch lever K-3 is performed, the arm 79 at the distal end thereof is connected via the wire 78.
Is rotated about the central pivot 80, is connected to the other end of the arm 79, and the clutch gear 81 operatively connected to the drive roller shaft 54 slides, and the roller shaft cylinder 49 is integrated with the drive roller 49. And power is transmitted from the drive roller shaft 54 to the seedling feed belt 44 via the roller shaft cylinder 49 'and the drive roller 49.

On the other hand, when the unit clutch lever K-3 is disengaged, the clutch gear 81 and the roller shaft cylinder 49 'integrated with the drive roller 49 are disengaged, and the power from the drive roller shaft 54 is cut off to remove the seedling. The seedling feed belt 44 at the center of the platform 25 does not operate.

Therefore, the unit clutch at the center of the seedling mounting table 25
When L-3 is cut, the seedling feed belt 4 at the center of the seedling
Since the power from the drive roller shaft 54 of No. 4 is not transmitted to the drive roller 49, the drive of the central medicine spraying device M-3 interlockingly connected to the drive roller 49 via the interlock belt 48 also stops, and the center Seedling feed belt 4 separately for chemical sprayer M-3
It is not necessary to provide a locking mechanism for stopping the operation of Step 4 or to perform a locking operation, thereby simplifying the operation of spraying the medicine.

The central unit clutch L-
3, central seedling feed belt 44, central chemical spraying device M-3
The left and right unit clutches L-1 and L-2, the left and right seedling feed belts 44, and the left and right drug sprayers M-1 and M-2 The same applies to the relationship between interlocking and power disconnection.

Further, since two right and left seedling feed belts 44 for each row are provided in parallel with respect to one row of seedling mounting tables 25, drive rollers for driving the left and right seedling feed belts 44 for one row are respectively provided. The left and right roller shaft cylinders 49 'are integrally linked to the left and right, and are further integrated with each of the two drive rollers 49 disposed on the left and right of the five-row planting seedling table 25. The 49's are also linked together.

Accordingly, by the operation of the clutch gear 81, the power from the drive roller shaft 54 is transmitted to the roller shaft cylinder 49 'to operate the seedling feed belt 44 via the drive roller 49 or to cut off the power transmission. It is configured as follows.

In this embodiment, the unit clutch L
Are provided, and the linkage to the five-row seedling feed belt 44 is divided into three blocks of two rows, one row, and two rows. However, the present invention is not limited to this, and the unit clutch L is provided for each row. Thus, the seedling feed belts 44 of each line may be linked to each other.

The seedling feed belt 44 of the seedling placing table 25 is also linked to the seedling vertical picking amount adjusting mechanism D. That is, as shown in FIG. 7, the seedling vertical picking amount adjusting mechanism D is configured to interlock and connect the operation lever 58 provided behind the driver's seat 19 to the seedling extracting plate 59 to adjust the front and rear sliding of the seedling extracting plate 59. By
The seedling vertical picking amount can be adjusted.One end of the inner wire 61 is connected to the middle of the operation lot 60 of the operation lever 58 of the seedling vertical picking amount adjusting mechanism D, and the other end of the inner wire 61 is Connected to a projecting piece 62 integral with a cam piece 63 connected to the driving roller shaft 54 of the driving roller 49 of the seedling feed belt 44, and displacing the position of the cam piece 63 via the projecting piece 62 by operating the inner wire 61, The power transmission amount from the operation cam 64 described later is adjusted, and the rotation amount of the drive roller 49 is adjusted.

Accordingly, when the operating lever 58 is operated to adjust the seedling vertical picking amount, the inner wire 61 is pulled through the operating lot 60, and the protruding piece 62 rotates to adjust the position of the cam piece 63 integrated therewith. Will be displaced. The cam piece 63 that can be displaced in this manner is engaged with the operating cam 64 that is connected to the end of the lateral feed shaft 57 of the seedling mounting table 25, so that the cam piece 63 is displaced from the drive roller shaft 54 of the drive roller 49. If the position of the interlockingly connected cam piece 63 is displaced, the amount of power transmitted from the operating cam 64 engaged with the cam piece 63 also changes, and the movement amount of the seedling feed belt 44 also adjusts the seedling vertical picking amount. Can be adjusted accordingly.

As described above, when the amount of seedlings taken up is adjusted, the amount of movement of the seedling feed belt 44 is adjusted, and the amount of movement of the seedling mat a is adjusted accordingly. The amount of application will also be adjusted.

The medicine dispensing section 65 of the medicine spraying apparatus M
A timing belt forms an interlocking belt 48 suspended between the seedling feeding belt 44 and the pulley 66 connected to the feeding roller 47 of the medicine feeding section 65, and the pulley connected to the rollers 49 and 51 of the seedling feeding belt 44. By configuring the timing pulleys 50, by exchanging these timing pulleys, it is possible to change the operation amount of the medicine delivery section 65, and to adjust the delivery amount and the spray amount of the medicine c.

In the middle of the support 67 of the medicine spraying apparatus M,
The resistance bar 68 is laid in a direction crossing the seedling mounting table 25, and the height of the resistance bar 68 is set in the middle of the height of the seedlings b of the seedling mat a, and at least the height of the medicine ejection cylinder 46 is set. Opening 69
It is positioned on the upper side along the seedling mounting table 25 that extends in a slanted shape with a higher front height and lower height.

Therefore, when the seedling mat a is vertically fed and moves forward, the seedlings b are tilted by the resistance bar 68, and the medicine ejection cylinder
A space for the seedlings b is formed below 46, the medicine c is discharged into the space, and the medicine c is sprayed on the seedling mat a itself at the root of the seedling plant. Is longitudinally fed, the seedlings b tilted by the resistance bar 68 return to the original state while passing under the resistance bar 68 and below the medicine ejection cylinder 46.

The inside of the medicine discharging cylinder 46 provided below the medicine feeding section 65 of the medicine spraying device M is a medicine falling passage 70, and an air blowing pipe 72 communicating with a blower 71 is communicated immediately above the passage. When the air flows into the medicine falling passage 70, the medicine c is transferred to the seedling mat a by the action of the air.
To ensure that it can be sprayed.

Also, the medicine spraying position of the medicine spraying device M is
Of the seedling mats a on the seedling mounting table 25, it is also possible to configure so as to be near the lowermost end of the second mat so that the medicine c can be sprayed on the entire surface of the seedling mat a after the second mat. . In such a case, if the medicine c is sprayed in advance only on the first seedling mat a, the medicine c is automatically sprayed on the seedling mat a on the second mat and thereafter by the medicine spraying device M. Become.

As shown in FIG. 8, the medicine spraying device M disposed on the opposite surface of the seedling mounting table 25 is provided with a seedling feeding belt via an interlocking belt 48 interlocked with a driving roller 49 of the seedling feeding belt 44. It is configured to be rotatable in an upper semicircle around the 44 drive rollers 49.

That is, the ribs 73 of each row of the seedling mounting table 25 include:
A support plate 75 having a semi-circular guide groove 74 is provided upright. The semi-circular guide groove 74 of the support plate 75 has a guide pin 76 projecting from a support 67 of the medicine spraying apparatus M. Drive roller of the seedling feed belt 44
When the medicine spraying device M is rotated forward with respect to the seedling table 25 together with the support 67 around the support 49, the support 67 moves along the semicircular groove of the support plate 75 via the guide pin 76 and the guide groove. While being supported by 74, it is displaced toward the front end of the seedling mounting table 25.

That is, when performing the medicine spraying operation,
The medicine spraying device M is displaced as close to the seedling mat a as possible, so that the medicine c can be sprayed efficiently and reliably. On the other hand, at the time of taking out the remaining seedling mat due to unplanting, or during the non-working time when the medicine spraying work is not performed such as when performing maintenance work, the medicine spraying device M is moved from the seedling mat a above the front end of the seedling mounting table 25 as much as possible. , The remaining seedling mat can be easily taken out.

FIG. 9 shows another embodiment of the transmission path of the power to the medicine spraying apparatus M.

That is, in the above-described embodiment, the power transmission path to the medicine spraying device M receives the power from the drive roller shaft 54 of the seedling feed belt 44. However, in the present embodiment, the vertical conveyance of the seedling mat a is performed. Does not use the seedling feed belt 44,
A roller 77 having a part of the peripheral surface exposed on the bottom plate of the seedling mounting table 25 is used. An interlocking belt 48 is suspended between the roller 77 and the feeding roller 47 of the medicine spraying apparatus M, and the roller 77 is From the power supply to the medicine spraying device M.

The roller 77 is driven by using the movement of the seedling mat a at the time of splicing. That is, when the seedling mat a is inserted into the upper part of the seedling mounting table 25 for the purpose of transferring seedlings, the seedling mat a moves from the upper part to the lower part of the seedling mounting base 25 by its own weight. 77 is driven.

Therefore, the feeding roller 47 of the medicine spraying apparatus M can be rotated in accordance with the movement of the seedling mat a, so that the medicine c can be sprayed uniformly.

In FIG. 10, the power transmission path to the medicine spraying device M is taken from the drive roller shaft 54 of the seedling feeding belt 44, but the medicine feeding section 65 of the medicine spraying device M is slightly moved to the seedling mounting table 25. Therefore, the rear wall 45-1 of the medicine hopper 45 of the medicine feeding section 65 is disposed at a position where it interferes with the upper part of the seedling b of the seedling mat a. .

Therefore, when the seedling mat a is fed longitudinally, the seedlings b are brought into contact with the rear wall 45-1 of the chemical hopper 45 and extend along the seedling table 25 which extends in a slanting manner with a front height and a low height. The seedlings b do not interfere with the direction in which the medicine is ejected from the medicine discharging cylinder 46, and a space is formed in the medicine spraying direction, so that there is an effect that the medicine c can be sprayed without hindrance.

With this configuration, the resistance bar 68 which is supported in the middle of the support 67 of the medicine spraying apparatus M becomes unnecessary, and the medicine hopper of the medicine feeding section 65 of the medicine spraying apparatus M becomes unnecessary.
With 45, the same effect can be achieved.

[0068]

According to the first aspect of the present invention, the medicine spraying device is disposed at a position facing the seedling mat mounting surface of the seedling mounting table, and the medicine is driven out from the seedling feed belt. The inconvenience of spraying the medicine on the nursery box in advance can be eliminated. In addition, since the medicine is sprayed only on the seedlings to be planted in the field, only the necessary amount of the medicine can be sprayed, and waste of the medicine can be prevented.

Further, since the seedling feed belt is interlocked and connected so as to intermittently drive in conjunction with the unit clutch, the spraying of the medicine is automatically stopped when the unit clutch is disconnected. The sprayed seedling mat is not sprayed with chemicals, and even without specially stopping the spraying of chemicals only on the strips, it is possible to reliably prevent the spraying of chemicals to the seedling mats on the stopped seedling feed belt. Thus, waste of the medicine can be prevented.

According to the second aspect of the present invention, since the seedling feed belt of the seedling mounting table is connected to the mechanism for adjusting the amount of cut seedlings, the length of cut seedlings is adjusted when the amount of cut seedlings is adjusted from the seedling mat. The amount of belt movement of the seedling feed belt automatically changes in accordance with the amount of vertical feed.

Therefore, the amount of medicine delivered from the medicine spraying device interlocked with the seedling feed belt changes, and an appropriate amount of medicine can be sprayed in accordance with the adjusted longitudinal feed amount of the cutting seedlings. Is no longer necessary.

According to the third aspect of the present invention, since the medicine feeding section of the medicine spraying device and the seedling feeding belt are linked and connected by the timing belt, the timing pulley on which the timing belt is suspended is replaced to replace the medicine pulley. The amount of power transmitted to the dispensing section can be changed, and therefore, the dispensing amount of the medicine can be adjusted only by replacing the pulley, and there is an effect that the dispensing amount can be freely adjusted according to the type of medicine.

According to the fourth aspect of the present invention, the middle of the height of the seedlings can be weeded by the resistance bar traversing the seedling mat. In addition, since the leaf tip of the seedling does not interfere with the spraying port, the spraying port is moist due to the dew of the leaf tip, and the effect that the chemical adheres to the spraying port can be solved.

According to the fifth aspect of the present invention, since air can flow into the medicine falling passage, the spraying of the medicine can be assisted by the flowing air, and the medicine can be sufficiently sprayed and penetrated to the floor of the seedling mat. Has the effect of being able to.

According to the sixth aspect of the present invention, the position of the medicine spraying device can be displaced between the time when the medicine is sprayed and the time when the medicine is not sprayed. At the time, it is possible to disperse the medicine efficiently by displacing it as close to the seedling mat as possible, and at a distance from the seedling mat when removing the remaining seedling mat from the seedling mounting table or performing maintenance. The medicine spraying device has an effect of not disturbing when removing the remaining seedling mat or performing maintenance.

[Brief description of the drawings]

FIG. 1 is an overall side view of a chemical spraying device for a riding rice transplanter according to the present invention.

FIG. 2 is a side view showing an interlocking mechanism of a medicine spraying device and a seedling feeding belt of a seedling mounting table.

FIG. 3 is a side view showing another embodiment of the interlocking mechanism.

FIG. 4 is an explanatory diagram showing an interlocking mechanism between a planting section and a seedling feeding belt of a seedling mounting table.

FIG. 5 is a plan view of a seedling mounting table.

FIG. 6 is an explanatory view of the seedling mounting table viewed from the back side.

FIG. 7 is an explanatory view showing an interlocking mechanism between a seedling vertical pick-up amount adjusting mechanism and a chemical spraying device.

FIG. 8 is an explanatory view showing rotation of the medicine spraying device.

FIG. 9 is an explanatory view showing another embodiment of the power transmission path to the medicine spraying device.

FIG. 10 is an explanatory view showing the substitution of a resistance bar by a medicine hopper.

[Explanation of symbols]

 A Riding rice transplanter a Seedling mat B Drive mechanism b Seedlings c Drug D Seedling length control mechanism M Chemical spraying device 2 Planting unit 25 Seedling table 43 Seedling mat mounting surface 44 Seedling feed belt 45 Drug hopper 46 Drug discharge Cylinder 47 Feeding roller 48 Interlocking belt L Unit clutch 65 Drug feeding section 68 Resistance rod 70 Drug drop passage

Continued on the front page (72) Inventor Kazunori Ogama 1-32 Chayacho, Kita-ku, Osaka, Osaka Inside Yanmar Agricultural Machinery Co., Ltd. (72) Toshio Nakao 1-32 Chayacho, Kita-ku, Osaka, Osaka Yanmar Agricultural Machinery Co., Ltd. F term (reference) 2B052 BC05 BC08 BC09 BC16 DB04 DB07 DD02 2B060 AA01 AC03 AD09 BA04 BA09 BB06 BB10 CA19 CB06 2B064 AA05 AA07 AB01 BA26 2B121 CB09 CB20 CB23 CB33 CB46 CB51 CB61 CB66 EA26 FA

Claims (6)

[Claims] A chemical spraying device (M) is provided at a position facing a seedling mat mounting surface (43) of a seedling mounting table (25), and a driving mechanism (B) of the device (M) In conjunction with the seedling feed belt (44) of the mounting table (25), the seedling feed belt (44) is interlocked with the unit clutch (L) that transmits and disconnects power to the belt (44), A chemical spraying device for a rice transplanter for riding, characterized in that the driving is intermittently performed. 2. The chemical spraying device for a rice transplanter according to claim 1, wherein the seedling feed belt (44) of the seedling mounting table (25) is linked to the seedling vertical picking amount adjusting mechanism (D). . 3. A medicine dispensing section (65) of a medicine spraying device (M).
And the seedling feed belt (44) are linked by a timing belt to enable the replacement of the timing pulley that suspends the timing belt, and the replacement of the timing pulley allows the amount of the drug dispensing device (M) to be fed out. The chemical spraying device for a riding rice transplanter according to claim 1, wherein the chemical spraying device is configured to be changed. 4. A resistance bar (68) traversing a seedling mat (a) is disposed at a height in the middle of the height of the seedling near the spraying part of the medicine spraying device (M). Seedlings (b) immediately before spraying c)
The chemical spraying device for a riding rice transplanter according to any one of claims 1 to 3, wherein the plant can be planted. 5. A medicine feeding section (65) of a medicine spraying device (M).
The passenger according to any one of claims 1 to 3, wherein a medicine drop passage (70) is provided below, and air can flow into the passage (70). Rice planting machine spraying equipment. 6. A medicine spraying device (M) disposed on a side opposite to a seedling mounting table surface, which is capable of being displaced to a position near the seedling mat (a) as much as possible when performing a medicine spraying operation. The non-working operation, when not performed, is configured to be displaceable to a position separated from the seedling mat (a), any one of claims 1 or 2 or 3 or 4 or 5. The chemical spraying device for a riding rice transplanter according to Claim 1.