JPH09262012A - Tractor-mounted agrochemical spray apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tractor-mounted agrochemical spray apparatus having a simplified transmission mechanism and shorter body work length. SOLUTION: This tractor-mounted agrochemical spray apparatus comprises such a structure that an engine E located in front of a steering wheel 1 is constructed as a vertical engine having a vertical crankshaft 2, that a power- takeout shaft 3 is located between the front right and left wheels under a chassis 4, and that the power is transmitted from the power-takeout shaft 3 to a blower shaft 7 of an agrochemical spray apparatus 6, which is mounted in the front of the chassis 4, through a belt 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drug spraying device for a tractor, and is used in a mode in which a dusting machine for spraying a drug, a sprayer or the like is attached to the front part of a riding tractor for working.

[0002]

In the case of chemical spraying by tractor traveling, the chemical spraying machine is arranged on the front side of the vehicle body so that operability is good and efficient work can be performed. However, if the power interlocking mechanism from the vehicle body side is taken from the rear portion of the vehicle body, the power transmission mechanism on the side of the chemical sprayer tends to be complicated as a special mechanism.

[0003]

The present invention is a rigid engine having a crankshaft 2 of an engine E arranged in front of a steering handle 1 in the vertical direction, and a power take-off shaft 3 interlocked with the crankshaft 2. Is positioned between the left and right front wheels 5 below the vehicle body 4, and a belt 8 is transmitted between the vehicle 8 and the blower shaft 7 of the agent sprayer 6 mounted on the front portion of the vehicle body 4 to form a drug spraying device for a tractor. .

[0004]

EFFECTS OF THE INVENTION In the medicine spraying machine 6 mounted on the front part of the tractor vehicle body 4, a blower shaft 7 is projected downward so as to face the power take-off shaft 3 which is located between the left and right front wheels 5 at the rear part.
A belt 8 is stretched between the power take-off shaft 3 and the blower shaft 7 by a pulley to transmit the medicine spraying machine 6.

In such a tractor chemical spraying machine, the power take-off shaft 3 from the engine E and the blower shaft 7 mounted on the front part of the vehicle body 4 are in the vertical direction and face each other between the front wheels 5 in the front-rear direction. Therefore, the medicine spraying machine 6 can be mounted at a position as close as possible to the front wheel 5 to improve the operability of the medicine spraying. Moreover, as the transmission mechanism, the power take-off shaft 3 provided interlockingly with the rigid engine E with the crank shaft 2 oriented in the vertical direction and the blower shaft 7 at the front of the vehicle body are installed in the vertical direction. Since the medicine spraying machine can be directly transmitted by using the blower shaft 7 as the input shaft by interlocking with the belt 8, it is possible to simplify and reduce the weight.

[0006]

[Example] The tractor body 4 is a steering wheel 1
Has four front wheels 5 that can be steered by the steering wheel and rear wheels 10 at the lower rear of the cockpit 9, and the four wheels are driven by an engine E mounted on the vehicle body 4 between the left and right front wheels 5. It is in the form. In this engine E, the crankshaft 2 is vertically rigid, and the front wheels 5 and the rear wheels 10 are transmitted from the crankshaft 2 via a transmission mechanism of a transmission case (not shown). Immediately below 2 is a lower end V-pulley 11 which is interlocked with the vertical power take-off shaft 3. The power take-off shaft 3 has front wheels 5 on the left and right.
Installed approximately in the center of the space. The crankshaft 2 and the power takeoff shaft 3 may be coaxial.

The chemical spraying machine 6 has a blower 12 in the lower part, a tank 13 for containing the chemicals in the upper part, a feeding device 14 for feeding out the powdered chemicals contained in this tank, and the like. The drug delivered from 14 is guided to a spraying boom 15 extending in the left-right lateral direction, and the drug is delivered by the jet wind force from the blower 12 blowing out to the spraying boom 15, and from the spray port 16 provided in each spraying boom 15. Eject toward the crop below.

The blower 12 is installed with the blower shaft 7 oriented vertically, and a V pulley 17 is provided at the lower end of the blower shaft 7 so as to face the V pulley 11 of the power take-off shaft 3 in the front and rear direction. The V-belt 8 is hung on and interlocked. The medicine spraying machine 6 is detachably provided as a hitch 18 on the front end of the vehicle body 4. By driving the engine E, the front wheels 5 and the rear wheels 10 of the vehicle body 4 are interlocked with each other, and the blower 12 is driven via the power take-off shaft 3 and the belt 8 and the operating device 14 is driven from the blower shaft 7. In association with each other, the medicine in the tank 13 is delivered to each spray boom 15 side. The medicine delivered to the spraying boom 15 is delivered by the jet wind force of the blower 12 and the spray nozzles 16
Sprayed from.

In FIG. 3, the difference from the above example is that the blower 12 is provided between the front wheel 5 on one side of the front side of the vehicle body 4 and the front wheel 5 on one side, and is provided across the lateral direction on the front side. The blower shaft 7, which is in communication with the spray boom 15, is laterally supported by a gear case 19 fixed laterally of the vehicle body 4, and a V pulley 21 of the input shaft 20 protruding below the gear case 19 is provided.
And a V-pulley 11 of the power take-off shaft 3 under the engine E, so that the belt 8 is stretched and transmitted.
By providing the blower 12 inside the front wheel 5 in this manner, the spreader boom 15 is attached to the bumper 22 at the front end of the vehicle body 4.
The front-rear length can be made shorter by directly mounting it on the etc.

In FIG. 4, the difference from the above example is that a spray nozzle 23 for spraying the chemical liquid is provided from the central portion of each spray port 16 of the spraying boom 15, and the jet air and the spray are simultaneously performed to spray the chemical liquid. The surroundings are scattered by a wind blown from the nozzles 16 in a certain area. The pipe 24 of each spray nozzle 23 may be provided along the inside of the spraying boom 15, or may be provided along the outer peripheral portion. The injection port 16 is provided in a slit shape so as to surround the spray nozzle 23. Further, in the case of spraying the chemical liquid, only the air blown from the blower 12 is guided through the spray duct 15 and the dust is not supplied.

In FIG. 5, the difference from the above example is that the drive of the pump P for spraying the chemical liquid and the drive of the blower 12 are switched, and the tension clutch pulley 26 from the traveling drive shaft 25 of the traveling transmission system is used. Also, the ground PTO of the pump shaft 28 is linked by the belt 27, and the live PTO of the pump shaft 28 is linked by gear shifting from the power take-off shaft 29 or the blower 12 is linked.

The traveling drive shaft 25 interlocks with the front wheels 5 and the rear wheels 10 via a speed change device, and interlocks with a pump shaft 28 via a belt 27 which is inserted and cut by a tension clutch pulley 26 from this midway. There is. The power take-off shaft 29 is linked from the engine side, and is provided with transmission gears 31, 32 and a clutch pawl 33 in the PTO case 30.
The output shaft 34 has a low speed gear 35 and a speed change gear 36 which are meshed with the gears 31 and 32 for switching. The output shaft 34 is connected to the pump shaft 28. The interlocking shaft 37, which is interlocked by the engagement of the clutch pawls 33, is connected to the blower shaft 7 having the blower 12 mounted on the blower transmission case 38 at the rear portion of the vehicle body 4 via the belt 40 that is put in and out by the tension clutch pulley 39. Are linked together.

In the live PTO interlocking, when the transmission clutch 31 is engaged with the low speed gear 35 while the tension clutch pulley 26 is disengaged, the pump P is transmitted at low speed, and when the transmission gear 32 is engaged with the transmission gear 36, the pump P is operated. Can be geared. When the clutch pawl 33 is engaged, the pump P is not driven but the blower 12 is driven.
Here, when the pump P is driven, the belt 27 is interlocked by the tension clutch pulley 26 and the ground PT.
O interlocking. Therefore, in a transmission form such as a duster driven by the blower 12 alone, the tension clutch pulley 26 is driven by the blower 12 driven by the clutch claw 33.
When the interlocking of the pump P by the above is cut off and the spraying by the sprayer and the blowing by the blower 12 are required, the driving of the blower 12 by the clutch claw 33 and the driving of the pump P by the tension clutch pulley 26 are performed at the same time. It should be done.

Therefore, the interlocking of the pump P by the speed change gear 31 or 32 is switched when the normal spraying is performed. 6 and 7 show the transmission gears 31, 32,
The switching operation of the tension clutch pulley 26 and the like is performed by a single operation lever 41. H-shaped live guide groove 43 on the lever guide 42 beside the cockpit 9
And the ground guide groove 44 is formed. This operating lever 41
This operation lever 41 is attached to the lever shaft 45 of
5 is provided with bifurcated arms 46 and 47 that can be engaged by tilting in the direction along 5, and one of the arms 46 is linked via a link 48 to a shifter rod 49 for operating the transmission gears 31, 32, etc. By engaging the lever 41 with the arm 46 and rotating the live guide groove 43 back and forth, it is possible to shift to the live low speed L, the live high speed, the blower speed B, and the like.

The other arm 47 is the link arm 5
0 is connected, and further, the clutch arm 53 of the tension clutch pulley 26 is operated via the wire 51, the spring 52, etc. The operation lever 41
Is engaged with the arm 47 at the neutral position N and rotated to the front ground position G along the ground guide groove 44, thereby pressing the tension clutch pulley 26 against the belt 27 and transmitting the pump shaft 28. .

[Brief description of drawings]

FIG. 1 is a side view.

FIG. 2 is a plan view and a partially enlarged front sectional view.

FIG. 3 is a side view, a plan view, and a front view showing a part of another embodiment.

FIG. 4 is a side view, a cross-sectional view, and a bottom view of a spray boom section showing a partial different embodiment.

FIG. 5 is a transmission mechanism diagram of a power take-off shaft portion showing another embodiment.

FIG. 6 is a side view showing the operation mechanism, and a front view and a plan view of a part thereof.

FIG. 7 is a front view thereof.

[Explanation of symbols]

 1 Steering Handle 2 Crankshaft 3 Power Extraction Shaft 4 Car Body 5 Front Wheel 6 Chemical Sprayer 7 Blower Shaft 8 Belt E Engine

Front page continuation (72) Inventor Masato Nagai 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture

Claims (1)

[Claims] 1. A rigid engine in which a crankshaft 2 of an engine E arranged in front of a steering wheel 1 is arranged in a vertical direction, and a power takeoff shaft 3 which is interlocked with the crankshaft 2 is provided in front of left and right below a vehicle body 4. A tractor drug spraying device which is located between wheels 5 and which is transmitted by a belt 8 between a wheel 8 and a blower shaft 7 of a drug sprayer 6 mounted on the front part of the vehicle body 4.