JP2006158306A - Application apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein a conventional application apparatus for applying a granular or powdery fertilizer or agrochemical has a structure for applying the application material from application ports in the middle and tip portions of an application boom, discharges the whole amount of the left material not discharged from the middle portions of the boom, from the tip portion, and thereby irregularly and uselessly discharges the material to enhance the cost. <P>SOLUTION: The granular or powdery application material received in a tank (6) is transferred into a main ventilation route (14a) provided on an application boom (11) together with air and then applied from application ports (12, 12, ...) opened on the main ventilation route (14a). The tip of the main ventilation route (14a) is provided with a returning ventilation route (14b) to return the residual application material to the tank (6). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a configuration of a spraying device that sprays granular or powdered fertilizers and medicines.

2. Description of the Related Art Conventionally, there is known a spraying device that stores granular or powdered fertilizer in a tank (hopper), and sprays the sprayed material such as fertilizer on a wind sent from a fan (blower) from a spray boom. For example, the spraying device disclosed in Japanese Patent Application Laid-Open No. 10-155324 has a configuration in which sprayed material is sprayed from the middle part and the tip part of the spraying boom.
Japanese Patent Laid-Open No. 10-155324 (FIGS. 5 and 6)

  In the conventional spraying device as described above, the fan air flow rate and the sprinkling amount of the sprayed material are adjusted prior to the work. However, this adjustment is difficult for an unfamiliar worker, and an excessive amount is required from the tip of the spraying boom. There was a problem in that a large amount of sprayed material was discharged, resulting in uneven spraying and high costs.

In order to solve the above problems, the present invention has taken the following technical means.
That is, the invention according to claim 1 stores the granular or powdered spatter in the tank (6), and sends the spatter with the wind to the main ventilation path (14a) provided in the sprinkling boom (11). In a spraying device for spraying from a plurality of spraying ports (12, 12,...) Opened in the main ventilation path (14a), the sprayed material is returned to the tank (6) at the tip of the main ventilation path (14a). It was set as the spraying device characterized by having the ventilation path (14b) for reduction.

(Operation of the invention)
When performing the spraying operation, the spraying boom (11) is extended with respect to the material to be sprayed, and the sprayed material is blown into the main ventilation path (14a) of the spraying boom (11), whereby the sprayed material is spread over the plurality of spraying ports (12, 12). …) And will be distributed evenly across the field. And the excess spatter which cannot be discharged | emitted from a sprinkle port (12) is returned in the tank (6) through the ventilation path (14b) for reduction | restoration.

  As described above, the tip of the main ventilation passage (14a), that is, the tip of the spraying boom (11) is provided with the return ventilation passage (14b) for returning to the tank (6), so that the tip of the boom (11) It is possible to prevent the excessive spatter from being discharged from the section and to perform sprinkling as uniformly as possible over the working width. Moreover, since the excess spatter is returned into the tank (6), wasteful scattering can be eliminated and the cost can be reduced.

Hereinafter, the form which mounted the spraying device of this invention in riding management machine 1 which performs field management work is explained.
FIG. 1 shows a passenger management machine 1, in which an engine E is mounted in a bonnet 2 at the front of the vehicle body, and the rotational power of the engine E is transmitted to a transmission in a mission case 3, and this transmission Rotational power decelerated in (4) is transmitted to the front wheels 4 and the rear wheels 5. The rear part of the vehicle body is equipped with a blower fan 13 and a storage tank 6 for storing sprayed powder, granular fertilizer and the like, in this case, a tabular type medicine, and a cockpit 7 is arranged in front of the storage tank 6. In addition, a steering handle 8 for steering the front and rear wheels 4 and 5 is further provided in front of it. The medicine in the storage tank 6 is fed to the main ventilation path 14 a in the spraying boom 11 by rotating the feeding roll 9 at the bottom of the tank by the electric feeding motor 9. Under the action, it is pumped toward the front end side of the ventilation path 14a and sprayed from a plurality of spraying ports 12 that are opened at predetermined intervals in the middle.

Further, as shown in FIGS. 2 and 3, the spraying boom 11 is configured to be freely changeable between a working posture extending toward the left and right lateral sides of the aircraft and a storage posture along the longitudinal direction of the aircraft. Yes.
Further, the tip end portion of the spreading boom 11 is bent in a loop shape to form a reducing ventilation path 14b so as to communicate with the inside of the storage tank 6, and excess medicine in the main ventilation path 14a is removed. It is configured to blow back into the tank 6 through 14b.

  In addition, a cylindrical storage portion 15 is formed between the main ventilation path 14 a and each spray port 12, and a feeding roller 17 is provided at the lower portion of each storage portion 15. The plurality of feeding rollers 17, 17... Are connected by a transmission shaft 16 along the spraying boom 11 with the same axis.

  As a result, excess medicine that is not stored in one storage unit 15 is sequentially sent to the next storage unit 15 by the wind, and is rotated by the variable motors 17M and 17M separately provided with the transmission shaft 16, thereby each feeding roller. 17 is rotated, and the tabula type medicine falls.

  Further, as shown in FIG. 5 and FIG. 6, a load sensor 20 for detecting the weight load of the medicine is provided in the feed roll 9 at the lower part of the storage tank 6. On the other hand, there is no chemical in the tank 6 or a bridging phenomenon occurs, so that there is no load on the roll 9 part. The load sensor 20 detects a no-load state and activates the warning buzzer 23.

  Further, in the spraying device of the riding management machine 1, as a means for preventing the bridging phenomenon of the medicine, as shown in FIG. 7, a part of the wind from the blower fan 13 is sent into the tank 6 through the pipe 24 as shown in FIG. It is set as the structure which stirs. In detail, by opening the ventilating holes 25, 25... In the oblique direction on the side wall of the tank 6 and sending it in, the wind swirls in the tank 6 and thereby the stirring action of the medicine works, and the bridging phenomenon is caused. Can be prevented. In addition, by increasing the internal pressure of the tank 6, it is possible to pump the granule under natural flow and stabilize the dispersion.

Next, the spray control of the riding management machine 1 will be described with reference to FIG.
Here, the front wheel 4 angle sensor 30 for detecting the steering angle of the front wheel 4 and the vehicle speed sensor 31 for detecting the vehicle speed are provided on the spreading work vehicle, and the feeding rollers 17 and 17 of the left and right spreading booms 11 are respectively set. Each of them is configured to be driven by a variable electric motor 17M, 17M.

  In the spraying operation, when the vehicle is traveling straight, the left and right motors 17M and 17M are rotated at the same speed according to the vehicle speed, and when the vehicle steering operation is detected by the detection of the front wheel turning angle sensor 30, this steering operation is performed. According to the angle and the steering direction, the controller C changes the rotational speeds of the left and right motors 11L and 11R. That is, the motor rotation speed inside the steering is decelerated and the motor rotation speed outside the steering is increased.

Thereby, at the time of steering at the field end etc., the difference of the spray density of steering inside and outside can be reduced, and uniform spraying work can be performed as much as possible.
Further, as shown in FIG. 10, the front and rear wheel steering configuration of the riding management machine 1 is such that the pressure oil fed from the pump P is steered through the all-hydraulic steering device and the first switching control valve 34 for switching the steering mode. The pressure oil returned from the cylinder 32 is sent to the rear wheel steering cylinder 33 through the second switching control valve 35 that switches the steering mode. Furthermore, a third switching control valve 37 having an orifice 36 is provided on the return oil path side of the second switching control valve 35. The first, second, and third switching control valves 34, 35, and 37 are switched by an energization command from the controller C.

  In the passenger management machine 1 configured as described above, the vehicle is switched to the four-wheel steering mode and the front wheels by the switching operation of the first and second switching control valves 34 and 35 according to the setting of the separately provided steering mode setting device. The vehicle can travel in either the steering mode or the rear wheel steering mode. Since the first, second, and third switching control valves 34, 35, and 37 are switched by the controller C, for example, when the vehicle starts or travels at a low speed, the four-wheel steering mode is checked to control the steering wheel. 8 or when the vehicle is traveling at a high speed, the pressure oil returned from the cylinder 32 (33) is returned to the tank T through the orifice 36, thereby increasing the steering load and improving the straightness of the vehicle. be able to.

  The spraying device of the present invention can also be used for a backpack-type spraying device and a non-passenger-type spraying work vehicle.

The side view of a passenger management machine. The rear view of a passenger management machine and the partial top view of a spreading | diffusion boom. The top view of a passenger management machine. The front view which carried out the cross section of the spreading boom in the up-down direction. The side view of a spreading device. The figure which shows the relationship between a delivery roll and a load sensor. A partial sectional view of a tank. The top view which shows a spraying work state. Control block circuit diagram. Hydraulic circuit for steering the riding management machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Passenger management machine 6 Storage tank 11 Spreading boom 12 Spraying port 13 Blower fan 14a Main ventilation path 14b Reduction ventilation path

Claims (1)

The granular or powdery spatter is stored in the tank (6), and the spatter is sent to the main ventilation path (14a) provided in the spraying boom (11) together with the wind, and is opened to the main ventilation path (14a). In a spraying device for spraying from a plurality of spraying ports (12, 12,...), A reducing ventilation path (14b) for reducing the sprayed material to the tank (6) is provided at the tip of the main ventilation path (14a). A spraying device characterized by that.

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