JPS582227Y2 - tiller spray device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a spraying device for a tiller that sprays a chemical solution such as a soil disinfectant or soil improver in conjunction with tillage work.

More specifically, the pump of the spraying device mounted on the tiller, which sprays soil disinfectant under pressure, is driven in relation to the drive mechanism of the drive wheel of the tiller, thereby ensuring and stabilizing the operation of the spraying device. The present invention also relates to a spraying device for a tiller that can reliably spray a disinfectant or the like at the same time as tilling work.

In tobacco cultivation, etc., disinfectants and the like are sprayed on the soil in conjunction with cultivation and ridge work using a tiller, and for this purpose, a chemical spray device is attached to the tiller to spray the chemical solution.

To drive the spray device of a conventional tiller, a separate frame is attached to the handle side of the tiller, a chemical solution tank is placed and fixed on this frame, and the spray device is driven by the running of the tiller.

That is, specifically, a roller for driving the pump of the spraying device is provided under the chemical liquid tank of the frame at a position separate from the running wheel and at a distance from the running wheel, and the rotation of this roller drives a cam, and the cam drives the diaphragm pump. The pump was driven by moving the operating lever up and down to obtain the hydraulic pressure necessary for spraying the chemical solution, or in conjunction with the drive of the rotor for tilling soil and ridge-raising work.

In each of the above-mentioned conventional spraying devices, when equipment for cultivating soil and ridge-raising work, such as a rotor, is attached to the front of the cultivator, the working equipment, running wheels, and pump drive wheels are the same. It is difficult to maintain the surface within a flat surface in a highly uneven agricultural field, and for this reason, even if you try to operate the pump to spray the chemical solution at the same time as tilling the soil or ridge-raising, the operation of the spraying device will not be stable due to the above. However, it was difficult to perform reliable chemical spraying.

Therefore, it has been virtually impossible with conventional equipment to simultaneously perform soil tillage, ridge-raising, etc. using a tiller and spraying a chemical solution.

The inventor of the present invention took into consideration the above-mentioned problems with the conventional cultivator equipped with a chemical liquid spraying device, and devised the present invention to effectively solve the problems.

The object of the present invention is to provide a spraying device for a tiller, in which the pump of the spraying device for spraying a chemical solution mounted on the tiller is driven in relation to the drive mechanism of the traveling drive wheel of the tiller. .

Therefore, the purpose of the present invention is to drive the pump of a chemical spray device using the drive system of the running drive wheels without using pump drive wheels unrelated to the running drive wheels. To provide a spray device for a tiller, which can operate the spray device reliably and stably regardless of the relationship, ensures and stabilizes the operation of the spray device, and improves its function.

Moreover, the purpose of the present invention is to spray the chemical liquid at the same time as plowing work such as plowing soil and ridge-raising, in order to be able to perform the spraying operation of the chemical liquid reliably and stably regardless of the road surface conditions of the agricultural field. To provide a spray device for a tiller, which contributes to efficiency of tillage work and improvement of workability, and also contributes to simplifying the structure of a drive system of the spray device because it does not include pump drive wheels, etc. .

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows a schematic side view of a tiller including the device of the present invention.

Reference numeral 1 is a single-axle type power tiller, and its body 2 is equipped with left and right traveling drive wheels 3, and an engine 4 and a fuel tank 5 are fixedly installed on the body 2 above this 3, and a transmission connected to the engine 4 is installed. The axles 8 of the left and right running drive wheels 3 are driven via the case 6, the transmission case 7, etc., and obtain running power.

A nozzle attachment part 9 is provided on the mission case 6 at the front of the fuselage 2, and a handle 10 extends rearward through +Jt. Operating mechanisms such as a brake, a chenole lever, a clutch, an accelerator lever, etc. are provided around the .

Further, a tilling work machine 11 is connected to the front part of the machine body 2, and in the illustrated example, a work machine body 12 extends in front of the machine body 2, and a rotor 13 for cultivating soil and ridge-raising is attached to this.
is supported by a transmission case 14 having the same width as the transmission case 1, and the extended shaft of the mission case 6 drives the internal chino, sprocket, etc., and drives the shaft 15 of the rotor 13 extending to the left and right of the transmission case 14. The rotor 13 plows the soil, ridges, etc., and 16 installed in front of 0-1-13 is a mud receiving plate.

A general field cultivator has been described above, and a chemical liquid spraying device 20 is provided at the front side of the handle 100 and at the rear thereof.

A support frame 22 is connected to the rear end of the body 2, and a chemical tank 21 is removably fixed to the frame 22 via a band or the like.The frame 22 is provided with the following mechanism.

That is, as shown in FIG. 2, a diaphragm pump 24 is installed at the front end of the frame 22 via a bracket 23, and the suction pipe 25 of the pump 24 is connected to the chemical tank 21 via a tube 27, and the discharge pipe 26 is connected to the chemical tank 21 via a tube 27. tube 28
In the illustrated example, it is connected to a spray nozzle 29 provided on the rear side of the transmission case 14 of the rotor 13 in the direction of movement.

A rod 3 that drives a diaphragm built into the pump 24
0 extends below the bottom of the pump 24 through the bracket 23, and its lower end is connected to the tip 32a of the drive lever 32.
A return spring 31 is compressed between the lever 32 and the opposing surface of the bracket 230, and the spring 31 is provided so as to surround the rod 30.

The drive lever 32 is provided on one side of the frame 22, and the intermediate part thereof is connected to the hanging protrusion 22 of the frame 22 with a pin 33.
a, and the rear end of the lever 32 extends diagonally downward from the frame 22.

A support portion 22b is provided diagonally downward in the intermediate portion of the frame 22, and the support portions 22b are provided on the left and right sides of the frame 22. A support shaft 3 is provided between the ends of the left and right support portions 22b, 22b.
4 is installed rotatably.

A driven pulley 3 is provided between the support parts 22b and 22b on the support shaft 34.
A drive pulley 36 is fixed to one of the drive shafts 8 extending to the left and right sides of the transmission case 7, and a belt 37 is stretched between the pulleys 35 and 36. are connected to perform belt transmission.

A plate cam 38 is fixedly installed on the shaft 34, and the cam 38 is connected to the shaft 8, the pulley 36, and the belt 3 for driving the driving wheel 3.
7. Rotationally driven by shaft 34 driven by pulley 35.

A follower roller 39 faces on the circumference of the cam 38 so as to be engageable, and the roller 39 is pivotally supported by a pin 40 protruding from the inner surface of the rear end 32b of the drive lever 32. .

A substantially inverted clutch lever 41 is pivotally supported by a pin 43 at the intermediate portion of the support portion 22b' on the side having the drive lever 32, and the tip of the lever 41 is placed on a portion near the rear end of the lever 32. It is configured to engage with the provided engagement recess 32c, and an operating lever 42 is provided at the base end.

Further, a rod-shaped adjuster 45 that can move forward and backward is provided on the side surface of the support portion 220 via a bracket 44, and this adjuster 45
is provided at a position where its lower end abuts the upper end of the drive lever 32, and the adjuster 45 can be advanced or retracted by rotating the upper knob 46.

Next, to explain its operation, the cultivator 1 travels by being driven by the shaft 8 of the traveling drive wheel 3, and also the transmission case 6,
The rotor 13 is driven by a shaft 15 via a transmission case 14, and performs cultivation work such as plowing soil and ridge-raising in agricultural land.

In addition to this, the shaft 8, pulley 36, belt 37, and pulley 3
5 drives the shaft 34 of the cam 38.

In the state shown in FIG. 2, the clutch lever 41 falls down, its tip engages with the engaging portion 32c of the drive lever 32, and the rear end 32b is separated from the edge of the support portion 22b using the pin 33 as a fulcrum. In other words, the roller 39 is separated by the force of the cam 38, and the roller 39 is outside the maximum stroke of the cam 38, so that no power is transmitted by the cam 38.

Therefore, the pump 24 of the spray device 20 is inactive and in an off state.

By pulling the clutch lever 41 toward you via the operation bar 42, the lever 41 rotates clockwise in the figure using the pin 43 as a fulcrum, and the tip of the lever 41 and the drive lever 32
Since the lever 32 is urged counterclockwise in the figure by the spring 31 at the tip with the pin 33 as a fulcrum, the roller 39 at the rear end of the lever 32 collides with the cam 38. , this state is shown in FIG.

The rotation of the cam 380 pushes the roller 39 by a stroke according to its profile, and the drive lever 32 swings about the pin 33 against the spring 31, and the rod 30 of the pump 24 is moved at its tip 32a. Push up against the spring 31.

At the lower limit of the stroke of the cam 38, the tip of the lever 32 is pushed down by the action of the spring 310, the lever 32 operates in the opposite manner to the above using the pin 33 as a fulcrum, and the roller 39 at the rear end 32b follows the cam profile.

As a result, the drive lever 3
2 swings, moves the rod 30 of the pump 24 up and down, drives the internal diaphragm, sucks the chemical from the chemical tank 21, and sprays the pressurized chemical from the nozzle 29 through the tube 28.

In addition, in the illustration, the tiller 1 moves toward the handle side to perform tilling work, and the nozzle 29 is provided facing backward in the direction of movement.
It is configured so that the rotor 13 does not receive mud scattered by tilling soil, ridge-raising work, etc., and can prevent clogging of the nozzle 290 and damage caused by the scattered mud.

In the above, the amount of spray of the chemical solution can be adjusted by turning the adjuster 45 and advancing the drive lever 46 appropriately.
2, and as a result, the drive lever 3
The swing width of the pump 2 is regulated, the stroke of the rod 30 of the pump 24 is regulated, and the amount of spraying of the chemical solution is regulated.

In the embodiment shown above, the cam 38 is driven by a pulley or a belt, but it may also be driven by a chain wheel or sprocket.In short, it may be driven by a traveling drive wheel including a transmission system and a transmission system.

As is clear from the above, according to the present invention, the cam and lever of the pump of the spraying device are driven by a belt, pulley, etc. via the driving mechanism of the running drive wheel, so that the spraying and dispersion of the chemical solution is performed. This is carried out only by the driving mechanism of the traveling drive wheels, and the tiller can spray and disperse the chemical solution without being affected by road surface conditions such as unevenness in the farmland.

Therefore, according to the present invention, unlike the conventional spray device drive using pump drive wheels or tillage rotors, the spraying is driven by the stable and reliable ground contact of the running drive wheels, so it can be used in combination with tillage work. At the same time, the spraying of chemical solutions can be performed reliably and stably, making it possible to carry out the simultaneous work of plowing and spraying chemical solutions, making it reliable and stable, and improving the efficiency and workability of this type of work. This is a dog with an outstanding reputation.

Further, according to the present invention, since the spray pump is driven by the drive mechanism of the running drive wheels, the structure is simpler than the conventional means including pump drive wheels, etc., and the cost of this type of spray device and its equipment is reduced. In addition to contributing to down cleaning, when installing the spray device, it can be easily done by winding a belt between pulleys, etc., and it also exhibits various features such as being excellent in terms of maintenance, and is extremely practical.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a schematic side view of a tiller equipped with the device of the present invention, Fig. 2 is an enlarged view of the main parts,
FIG. 3 shows only the essential parts of FIG. 2, showing the clutch-on state, and FIG. 4 is a cross-sectional view of the transmission part as seen from the front. In the drawing, 1 is a tiller, 3 is a driving wheel, 20 is a spray device, 21 is a chemical tank, 24 is a pump, 29 is a nozzle, 3
0 is the pump drive rod, 32 is the drive lever, 34,3
5, 36, and 37 are drive systems for the cam 38.

Claims (1)

[Scope of utility model registration request] A chemical liquid pressurizing pump 24 connected to the chemical liquid tank 21 and also connected to the spray distribution nozzle 29, and a pivot whose one end is connected to the driving member 30 of the pump 24, and whose other end is connected to the cam 38 so as to be able to move toward and away from the chemical liquid pressurizing pump 24. The swingable lever 32 is connected to the drive mechanism 46 of the traveling drive wheel 3 via a belt 37,
A spraying device for a tiller, comprising a member 35 that drives the cam 38 only when the running drive wheel 3 is driven.