JP3537130B2 - Riding self-propelled spray device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding self-propelled spraying device for performing irrigation or disinfection for agriculture in which a spraying device is mounted on a riding self-propelled traveling vehicle.

[0002]

2. Description of the Related Art Conventionally, an agricultural tractor, which is an example of a riding type vehicle, has a tank for containing a disinfectant mounted on a rear side thereof.
At the rear of the rear tank, a spray type spraying device in which a boom having a spray tube for disinfection rotates up and down on the left and right sides, and a boom split into two parts at the front of the tractor body are attached and sprayed. There was something to work on.

[0003]

Among the prior arts, the former type has a problem that the spraying state of the disinfection is difficult to be seen by the operator because the spraying device is provided at the rearmost part of the vehicle body. In the latter case, when the protruding tip of the boom is brought closer to the fuselage, the base end of the boom protrudes forward of the fuselage, increasing the front-rear length, and has a drawback in that the driving operation becomes difficult.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and always maintains an appropriate spray attitude without changing the attitude of the spray nozzle even when the spray device 26 is moved up and down. for the purpose of obtaining a spray work vehicle that can further
It is an object of the present invention to improve the adaptability of the vertical position adjustment of the entire spray device .

Therefore, the following technical measures have been taken. That is, a center sprayer frame 27 having a width equal to or larger than the left and right width of a vehicle body having a plurality of spray nozzles 34 mounted at the front portion of the vehicle body and having a tank 20 containing a liquid for irrigation or disinfection at the rear portion of the vehicle body, and Center sprayer frame 27
In a spraying vehicle equipped with a spraying device 26 having side spray frames 39 rotatably accommodated toward the inside of the vehicle body on both left and right sides of the vehicle , a front hitch 13 is provided at the front of the vehicle body.
The fixing base frame 15 is detachably attached to the front hitch 13.
The upper link 16 and the lower link 1 are attached to the fixed base frame 15.
7 so as to be rotatable around a horizontal axis.
Hitches connected to the distal ends of upper link 16 and lower link 17
The frame 18 is pivoted, and the upper part of the connecting hitch frame 18 and the lower link 1 are connected.
7 with an electric cylinder 19 interposed and connected
The hitch frame 1 is connected by the movement of the piston 19a of the dam 19.
8 is configured to move up and down, and in front of the connecting hitch frame 18.
Set by fixing the engaging shaft 28, 29 of two up or down at the end portion
The center is attached to one of the engagement shafts 28 and 29.
-Sprayer frame 27 is detachably locked and sprayer 26 is
A riding self-propelled spray device characterized by being configured to be attached to the connecting hitch frame 18 .

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with reference to the drawings. Reference numeral 1 denotes a traveling vehicle, which is a four-wheel drive tractor which is an example of a riding type vehicle. As is apparent from FIGS. 1 and 2, an engine covered by a hood 5 is mounted on the upper front side of a vehicle body 4 having front wheels 2, 2 and rear wheels 3, 3, and a control seat 6 is provided at the rear. The steering post is provided upright at the left and right center of the rear end, and the handle 7 is provided. Although not shown, the front wheels 2, 2 and the rear wheels 3, 3 of the tractor 1 can be switched between front wheel steering, rear wheel steering and front and rear wheel steering by push buttons 8a, 8b, 8c which can be selectively switched from the steering seat side. What you are doing. 9 is a main transmission lever, 10 is an auxiliary transmission lever, and 11 is a throttle lever. 12 is the cockpit floor,
It is stretched on the upper surface side of the vehicle body.

A front hitch 13 is provided on the front side of the vehicle body 4. Reference numeral 14 denotes an elevating mechanism, which pivotally connects the base sides of an upper link 16 and a lower link 17 to a fixed base frame 15 which can be appropriately attached to and detached from the front hitch 13 so as to be rotatable around a horizontal axis. , 17 are connected to each other by a connecting hitch frame 18 so that the connecting hitch frame 18 can be linked up and down. And this lifting mechanism 1
In the link configuration of No. 4, the link fulcrum interval L on the tip side than the link fulcrum interval M on the base side is set so that the inclination of the connecting hitch frame 18 is directed rearward or forward at the middle of vertical movement. It is wide. Reference numeral 19 denotes an electric cylinder, which has a base side pivotally connected to the connecting hitch frame 18 and a piston side pivotally connected to the lower link 17 so that the connecting hitch frame 18 moves up and down by the ingress and egress operations of the piston 19a. .

Reference numeral 20 denotes a tank which is a resin tank for storing water for irrigation and a disinfectant, and is formed in a U-shape in plan view so as to surround the left and right sides and the rear side of the cockpit 6. It can be easily detached while sliding backwards. Further, a spray adjusting operation section 21 such as a switching valve, a pressure adjusting valve, or a spray position switching valve of the spray device is provided integrally with the tank 20 above the right side portion of the tank 20. Reference numeral 22 denotes a liquid supply lid, and 23 denotes a set screw of the tank 20. Reference numeral 24 denotes a dynamic injection pump, which is a rear hitch 25 of the tractor,
And is driven from a rear output shaft (not shown).

Reference numeral 26 denotes a spray device, which is a center sprayer frame 27.
And the side sprayer frame 39 can be divided and configured as follows. The center sprayer frame 27 includes a hook-like notch engaging portion 30 which can be selectively scratched on either side of the engaging shafts 28 and 29 fixed to the front end portion of the connecting hitch frame 18 in two vertical stages, In the locked state, the connecting hitch frame 18 and the connecting hitch frame 18 are integrally provided with a detachable fitting 33 having a fixing hole 32 through which the pin 31 can be inserted and detached. 34,3
4,. . . Are attached at predetermined left and right intervals to a center spray pipe 35 such that the nozzle 34 faces downward. Reference numeral 36 denotes a handle for rotating the center sprayer frame 27 at the time of detachment. Reference numeral 37 denotes a support for supporting a side sprayer frame described later at the time of folding, and a center sprayer frame 2.
The base is fixed to the left and right end sides of 7 so as to face rearward and upward during setting. A transport handle 38 for lifting and transporting the entire sprayer frame is provided at the upper end of the column 37. In addition, this transport handle 38
The direction of the grip portion is configured in the direction of gravity when the entire sprayer frame (including the center and side spray frame portions) is hung on the left and right columns 37, so that the balance can be maintained and carried. I have.

The side sprayer frame 39 has a pin 4 attached to a bracket 40 fixed to the left and right end sides of the center sprayer frame 27.
The movable member 42 is rotatable upward and rearward at 1 and is fixed to the movable member 42 by means of a pin 43 to a metal fitting 44 which can be rotated substantially horizontally only on the rear side.

Reference numeral 45 denotes an electric cylinder for rotating the side sprayer frame 39 about the pin 41. The cylinder body is pivotally connected to the center sprayer frame 27 and its piston 45a is pivoted to the movable member 42. Connect and piston 45
The side sprayer frame 39 is developed in the same direction as the direction in which the side sprayer frame 39 extends due to the projection of a, and is extended on the extension line thereof, and is configured to bend backward and upward by the retraction of the piston 45a. . Reference numeral 46 denotes a spring for holding the side sprayer frame 39 in the lifting direction, interposed between the column 37 and the movable member 42, and for maintaining the side sprayer frame 39 by the electric cylinder 45 and raising the swinging force. It works to help.

The spring 47 is provided on the side sprayer frame 3.
In the state where the side sprayer frame 39 extends in the left-right lateral direction interposed between the metal frame 9 and the metal fitting 44, when foreign matter comes into contact with the machine frame 39 from the front side, the machine frame 39 rotates around the pin 43. To prevent the machine frame 39 from being damaged, and to return to an original state in which the machine frame 39 is aligned with the center spray machine frame 27 when the contact of foreign matter is removed.

Numeral 48 denotes a side spray pipe, which is attached along the lower portion of the side spray machine frame 39, extends outwardly from the machine frame 39, and
4, 34,. . . Are mounted at predetermined left and right intervals.
Reference numeral 49 denotes a flexible rubber connection hose, which is connected to the center spray pipe 35 and the side spray pipe 48 from the dynamic injection pump 24 via the respective valves of the spray adjusting operation section 21 so as to send pressure liquid. It is a hose that does.

Reference numeral 50 denotes a lock device for maintaining the side sprayer frame 39 in a swung state.
7 for holding the side sprayer frame 39 attached to 7
1 and a lock fitting 52 for closing the entrance so that the side sprayer frame 39 is not accidentally dropped from the entrance when the side sprayer frame 39 is fitted into the holding fitting 51. The lock fitting 52 is connected to the side spray pipe 48. Is operably provided by a rod 54 provided movably by a lever 53 in the direction of the tube 48. The lever 53 is, of course, provided integrally with the side sprayer frame 39 and the side spray pipe 48.
When the steering wheel 8 is swung upward and rearward, it is configured to be in a position where it can be easily operated from the cockpit 6 side. Reference numeral 55 denotes a spring that holds a locked state, and 56 denotes a lever guide that inserts the rod 54 and locks the lever 53 so that the lock fitting 52 holds the unlocked state. Reference numeral 57 in the figure denotes a moving rolling wheel fixed to the center sprayer frame 27 via a bracket 58.

Next, the operation of the above example will be described in detail. The traveling vehicle 1 becomes a mere vehicle by removing the rear tank 20, the dynamic injection pump 24, the spraying device 26 and the elevating mechanism 14, and is used for other work. Can be a vehicle. In addition, in the watering operation or the disinfecting operation, these operations can be performed in the illustrated state.

That is, while the vehicle is operated while straddling the ridges on which the crops in the field are vegetated, the operator performs an appropriate operation of the spray adjusting operation section to supply the liquid to the spray device 26 side. The liquid sprayed from the spray nozzles 34 of the center spray pipe 35 and the side spray pipe 48 is sprayed in a spray state on plants (vegetables and flowers) growing on the ridges on which the vehicle is straddling and the ridges on the left and right sides. Or perform disinfection.

When the vehicle reaches the end of the field, the vehicle is turned while continuing or interrupting the watering and disinfecting operations, and the vehicle is moved to the ridge side of the unworked portion.
The required side of the left and right side sprayer frames 39 is swung upward and rearward to narrow the left-right width of the sprayer 26 so that it can be easily turned. In this operation, the left and right electric cylinders 45, 45 are respectively operated by switches (b) and (c) provided near the cockpit 9 to operate the piston 4.
When one or both of 5a and 45a are retracted, the left and right side sprayer frames 39 are rotated around the pins 41 and swung up as shown in FIGS. This state is the same when traveling on the road, but when traveling on the road, it is necessary to operate the lock device 50 to prevent the side sprayer frame 39 from rotating unexpectedly downward. Also, the spring 4
Since the side sprayer frame 39 is always held in the lifting direction in step 6, the lifting force is weak and a large electric cylinder is not required.

If the side sprayer frame 39 collides with foreign matters such as ridges and piles during the operation, the frame 39 rotates rearward against the spring 47 around the pin 43, and the frame 39 rotates. And the spray tube 48 can be held without being damaged, and return to the original state when foreign matter passes by. Further, in order to change the spray height in accordance with the difference in ridge height or the growing condition of the crop, the electric cylinder 19 of the elevating mechanism 14 may be operated by the switch (a) to change and adjust the elevating height. If the adjustment cannot be made within the adjustment range of the elevating mechanism 14, the entire spraying device 26 can be changed by vertically moving the mounting position of the center sprayer frame 27 from the engagement shaft 28 to the 29 side.

When the spraying device 26 is detached from the lifting mechanism 14 and is stored and stored in an appropriate place, it is possible to carry out the detaching operation alone. That is, in a state where the left and right side sprayer frames 39 are swung upward to be folded and locked by the lock device 50, the handle 36 is grasped with one hand, and the pin 31 is removed and lifted to remove the fitting 33 from the engagement shaft 28. It is sufficient to remove the notch locking portion 30 and lower it on the ground, and then carry it while grasping and lifting the left and right carrying handles 38. At this time, the center of gravity of the spray device 26 is
When it is suspended, it acts on the vertical side of the handle 38 to select a position and a direction in which there is no rotation in the front-rear direction, so that it can be easily lifted and transported.

The elevation mechanism 14 changes the angle of the spray device 26 with respect to the traveling vehicle 1 as shown in FIG. 1 by the elevation, but this change is made by folding the side spray pipe 48 when it is raised. Side sprayer frame 39 including
When the vehicle descends, the angle becomes steeper, and when the vehicle descends, the height of the upper end of the side spray pipe 48 is reduced so as not to obstruct the road running.

[0021]

According to the present invention, a tank 20 for accommodating a liquid for irrigation or disinfection is mounted at the rear part of the vehicle body, and a plurality of spray nozzles 34 are provided at the front part of the vehicle body. In a spraying vehicle equipped with a center sprayer frame 27 and a spraying device 26 having side spray frames 39 rotatably housed on the left and right sides of the center sprayer frame 27 toward the inside of the vehicle body, a front hitch is provided at the front of the vehicle body.
The front hitch 13 is attached and detached.
Attach the fixed base frame 15 to the
The base side of the link 16 and the lower link 17 around the horizontal axis.
The upper link 16 and the lower link 17 are pivotably connected to each other.
The connecting hitch frame 18 is pivotally connected to the front end of the connecting hitch frame 1.
An electric cylinder 19 is interposed between the upper part of
The piston 19a of the electric cylinder 19 goes in and out by connecting
The connecting hitch frame 18 is configured to move up and down by the operation,
At the front end of the connecting hitch frame 18, two engaging shafts 2
8 and 29 are fixedly provided.
The center sprayer frame 27 is detachably locked to one of them.
Then, the spray device 26 is attached to the connection hitch frame 18.
Since it is obtained by Uni construction, easy to change the spray height by growth orientation of the height and crops furrow during spraying operations
Thus, the direction of the spray nozzle 34, that is, the spray direction is hard to change, and the liquid can be sprayed on the crop without waste. And
The adjustment of the spray height is performed by the piston 19 a of the electric cylinder 19.
If it is not possible to respond only by moving in and out,
To change the position of the engagement shaft supporting the fog machine frame 27
Therefore, the adjustment range can be easily expanded,
The device itself can be inexpensively prepared because a shorter one can be prepared.
The workability can be significantly improved .

[Brief description of the drawings]

FIG. 1 is an embodiment of the present invention, and is an entire side view partially sectioned.

FIG. 2 is an overall plan view of the embodiment of the present invention.

FIG. 3 is an enlarged side view of a main part of an embodiment of the present invention.

FIG. 4 is an enlarged front view of a main part of the embodiment of the present invention.

FIG. 5 is a perspective view of an essential part of the embodiment of the present invention.

[Explanation of symbols]

1 running vehicle 2 front wheels 14 Lifting mechanism 18 Connecting hitch frame 22 tank 26 Spraying device 27 Center sprayer frame 34 spray nozzle 35 spray tube 39 Side spray frame 48 spray tube

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-21364 (JP, A) JP-A-58-62227 (JP, A) JP-A-2-70757 (JP, U) JP-A-60-62 136770 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01M 7/00 A01G 25/09 B05B 17/00

Claims (1)

(57) [Claims] 1. A center sprayer frame 27 having a tank 20 for storing irrigation or disinfecting liquid at the rear part of a vehicle body and a plurality of spray nozzles 34 at the front part of the vehicle body having a width equal to or larger than the lateral width of the vehicle body. And a spraying vehicle equipped with a spray device 26 having side spray frames 39 rotatably housed toward the inside of the vehicle body on both left and right sides of the center spray machine frame 27 , the front hitch 13 is provided at the front part of the vehicle body.
Fixing base frame 15 detachably to front hitch 13
Attach the upper link 16 and lower link
The base side of the lock 17 is pivotably connected to the horizontal axis.
And connected to the distal ends of the upper link 16 and the lower link 17.
The hitch frame 18 is pivotally connected, and the upper and lower
And an electric cylinder 19 interposed between the
When the piston 19a of the cylinder 19 moves in and out, the connection hit is made.
The hitch frame 18 is configured to move up and down, and
The two upper and lower engaging shafts 28 and 29 are fixed to the front end
And provided on one of the engagement shafts 28 and 29.
Spray device with center sprayer frame 27 detachably locked
A self-propelled riding type spray device characterized in that 26 is attached to the connecting hitch frame 18 .