JP2002204643A - Riding type machinery for plant husbandry - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a riding type machinery for plant husbandry which can automatically open or close booms, when the machine frame is turned. SOLUTION: This riding type machinery for plant husbandry is provided with booms which comprise a left side boom 12a, a central boom 12b, and a right side boom 12c for spraying a chemical agent and in which the booms 12b and 12c on the left and right sides can be stored on the sides of the machine frame, respectively, in the front of the machine frame. Therein, when the shut- off cock of the left side or right side boom is closed and further when the machine frame is steered on the side opposite to the closing side of the shut-off cock, the boom on the closing side of the shut-off cock is automatically stored.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic opening and closing of a boom at the time of turning in a passenger management machine.

[0002]

2. Description of the Related Art A passenger management machine is widely used as a machine for attaching a working machine to a rear portion or as a machine exclusively for controlling. In the case of a riding management machine used as a dedicated control machine, a boom for spraying a chemical solution is attached to the front of the machine. This boom is usually composed of three booms on the left side, center and right side. Each boom is provided with a nozzle for discharging a chemical solution at regular intervals. , 10 m can be sprayed at a time. Also, of these three booms,
The center boom is fixed in front of the fuselage, but the left and right booms will be obstructed if they are extended in the lateral direction of the aircraft when not working, and will not spray chemicals to other people's fields etc. In order to make it possible to fold each side of the fuselage, it can be stored.

[0003]

However, if one of the booms is to be closed and retracted during turning of the fuselage, the turning operation of the fuselage and the storing operation of the boom must be performed substantially simultaneously or in sequence. Conventionally, there has been an inconvenience that operation is difficult unless a skilled person. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional circumstances, and an object of the present invention is to provide a passenger management machine capable of automatically opening and closing a boom when a body turns.

[0004]

This object is achieved by the present invention.
According to the invention, the front and rear wheels have substantially the same diameter, the front and rear wheels are independently driven, and the front and rear four wheels can be steered, and the left, center and right booms for spraying the chemical liquid are provided in front of the body. In a passenger management machine equipped with a boom configured so that the left and right booms can be stored on the sides of the fuselage, respectively, the opening and closing cock of the left or right boom is closed,
Next, when the body is steered to the side opposite to the opening / closing cock closing side, this is achieved by a configuration in which the boom on the opening / closing cock closing side is stored in the side of the body.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall side view of a passenger management machine according to the present invention, and FIG. 2 is a plan view thereof. FIG.
And a passenger management machine 1 according to the present invention, as shown in FIG.
The front and rear wheels 2, 3 have substantially the same diameter, the front and rear wheels 2, 3 are independently driven, and the front and rear four wheels can be steered. The driver's seat is provided with a steering wheel 6, an instrument panel 7, a seat 8, and the like, and a hitch 10 for connecting a working machine is provided at the rear of the machine. Further, a control tank 9 is disposed on the floor so as to surround the sheet 8 in a U-shape, and a control pump is provided below the sheet 8. An engine 5 is mounted in a hood 4 at the front of the fuselage, and a transmission case 11 and the like are arranged below the deck. Furthermore, center, left and right booms 12a, 12b, and 12c are attached to a front portion of the body via a link frame 13.
Of these, the center boom 12a is fixed in position with respect to the aircraft, but the left and right booms 12b,
Reference numeral 12c is configured to be switchable between a state in which it is extended linearly (open state) and a state in which it is folded and stored slightly obliquely upward on the side of the body (closed state). The opening and closing of the boom is performed by the operation of the actuator 15. Nozzles for discharging a chemical solution are provided at equal intervals on the lower surface of each boom, and two types of nozzles 14a and 14b having different hole diameters are arranged in front and rear two rows in accordance with switching of the spray amount.

FIG. 3 shows the flow of the chemical solution. The chemical solution sent from the control tank 9 containing the chemical solution therein through the switching cock 16 and the filter 17 by the control pump 18 is transferred in three directions. It is branched and supplied to each of the center, left and right booms 12a, 12b, 12c. Opening / closing cocks 21a, 21b, 21c are provided on the front side of the booms 12a, 12b, 12c. The flow rate of the chemical solution supplied to each boom is controlled by the flow rate adjusting actuator 20, and at the same time, the amount of the chemical solution released to the control tank 9 is adjusted. A part of the chemical solution discharged from the control pump 18 is returned to the control tank 9 from the stirring nozzle 26 as stirring water. 19 is an air chamber, 22 is a pressure sensor, and 24 and 25 are flow rate sensors.

FIG. 4 shows the structure near the instrument panel 7 in the driver's seat. The instrument panel 7 includes a manual steering switch 7a,
7b, 7c, an automatic changeover switch 7d, a meter 7e, and a display panel 7f are arranged. Manual steering switches 7a, 7b,
By switching of 7c, the rear wheel steering (RWS), the front wheel steering (FWS), and the front and rear four-wheel steering (4WS) are manually switched. The automatic changeover switch 7d performs rear wheel steering during backward movement during non-working, front wheel steering during forward working, and forward and backward four-wheel steering during non-working, and automatically switches these.
27 is a main transmission lever. FIG. 5 shows an operation panel for spraying a chemical solution provided at one of the left and right sides of the driver's seat or the left and right front ends of the control tank 9. The display changeover switch 28 is turned on when pressed, and each time the switch is pressed, the flow rate, the pressure and the total flow rate are repeatedly displayed on the display unit 29. The spray width switch 30 selects whether the spray width is 8 m or 10 m, for example, and displays the selected spray width with a lamp. The customary small amount switch 31 selects whether the amount of spraying is a customary amount or a small amount, displays the selected amount of spraying with a lamp, and also displays the numerical value on the display unit 29. This numerical value can be changed by operating the increase / decrease switch 33 described below. The automatic manual switch 32 selects whether to perform automatic spraying (flow rate control) or manual spraying (fixed spray amount). In the case of automatic, the automatic lamp is turned on. The flow / pressure increase / decrease switch 33 is used for fine adjustment of increase / decrease from a fixed spray amount when spraying is performed manually or automatically. The reset switch 34
The accumulated flow rate up to that time is reset, the display on the display unit 29 is set to 0, and integrated and displayed until the next reset.

As described above, according to the present invention, the open / close cock 21b of the left boom 12b or the right boom 12c is provided.
Or 21c is closed, and then, when the body is steered to the side opposite to the opening / closing cock closing side, the boom on the opening / closing cock closing side is automatically stored in the side of the body.
A closing detection sensor is provided in the opening / closing cock 21b or 21c of the left and right booms to detect the closed state of the opening / closing cock 21b or 21c. Further, by providing a steering angle sensor on the front wheel 2 or the rear wheel 3 or by providing a steering angle sensor on the steering wheel 6, the left and right turning of the body is detected. An automatic boom opening / closing switch is provided, and when the switch is turned on, the above-described automatic opening / closing control of the boom is performed.

FIG. 6 is a flowchart of the boom automatic opening / closing control at the time of such turning. First, when the boom opening / closing automatic switch is on, the left boom 12b
Opening and closing cock (hereinafter referred to as "left opening and closing cock") 21b
When the turning angle of the tire (front wheel or rear wheel) is 3 degrees or more to the right, that is, when a right turn is performed, a boom closing output is performed for, for example, 3 seconds to activate the actuator 15 described above and to the left side. Is closed (steps 1 to 4). Next, when the left opening / closing cock 21b is opened, a boom opening output is performed and the left boom 12b is opened again (step 5,
6). Further, in step 2 described above, the left opening / closing cock 21b is opened, the opening / closing cock (hereinafter, referred to as “right opening / closing cock”) 21c of the right boom 12c is closed, and the cutting angle of the tire (front wheel or rear wheel) is 3 to the left. If it is not less than degrees, that is, if the left turn is performed, the boom closing output is performed, for example, for 3 seconds to close the right boom 12c (steps 7 to 9). Next, when the right opening / closing cock 21c is opened, a boom opening output is performed and the right boom 12c is opened again (steps 10 and 11). As described above, since the boom automatically opens and closes when the machine body turns, it is possible to eliminate the trouble of simultaneously performing the turning operation and the boom opening and closing operation as in the related art.

By the way, when one of the four front and rear wheels of the fuselage falls into the concave portion or rides on the convex portion,
Since the entire aircraft tilts and the front boom also tilts at the same time,
The boom on the side approaching the ground will contact the crop and damage the crop, and the boom on the other side away from the ground will be far away from the crop and the chemical liquid will accidentally scatter. . Therefore, the above problem is solved by controlling the heights of the projecting tips of the left boom 12b and the right boom 12c to the center point of the center boom 12a. This will be described with reference to FIGS. FIG. 7 shows a horizontal state, in which an inclination sensor 35 is provided at a predetermined position of the machine, and a potentiometer is attached to bending hinge portions 36 of the left and right booms 12b and 12c. And
As shown in FIG. 8, for example, when the front wheel 2 falls into the concave portion and the body is inclined at an angle α with respect to the horizontal position, for example, the tip B of the left boom 12b and the tip C of the right boom 12c.
The left boom 12b is tilted upward by an angle β1 with respect to the tilt position so that the points are at the horizontal position with the center position (point) A of the center boom 12a.
c is inclined downward by an angle β2 with respect to the inclined position.
Note that the inclination α of the body and the left and right boom control angles β1, β2
Is previously set in the CPU as a control line, and control is performed based on this. In this way, by controlling the left and right boom angles according to the inclination of the aircraft, the boom in front of the aircraft can be kept almost horizontal to the ground even if the aircraft is tilted, preventing conventional crop damage and chemical splashing it can.

FIG. 9 shows a structure in which the left and right booms are hung by wires. With a wire 37. The right boom 12c is not shown but is exactly the same. Also,
One end of the wire 37 is pulled toward the boom side by a spring 39 which is suspended at one end of the wire 37 through the predetermined position 40a of the left boom 12b and the other end of the left boom 12b via the center boom 12a end 40b of the left boom 12b. I have. In this way, the left and right booms are prevented from sagging, and the hinge 4
The strength in the case where the extension boom 41 is attached via 2 and the total length of the boom is used at 15 m can be improved. Furthermore, since the slack of the wire 37 is absorbed by the spring 39,
It is possible to prevent the wire 37 from hanging down when the boom is folded.

FIG. 10 shows a cooling structure around the engine. The hollow pillars of the main frame 43 are open front and rear, and a wind guide plate 44 is provided at a front end 43 a of the main frame 43. Further, a fan 46 is attached to a driven pulley that is wrapped around an output pulley 45 and a belt 47 in front of the engine 5. Since the structure is almost the same as that of the passenger management machine shown in FIG. 1 described above, the same parts are denoted by the same reference numerals. The cool air taken in from the rear end 43b of the main frame 43 is drawn into the engine 5 by the fan 46, and cools the belt 47, the muffler 48 and the like around the engine 5 to improve the durability.

[0013]

As described above in detail, according to the present invention, there are three booms for spraying the liquid medicine in front of the fuselage, and the left and right booms are respectively provided. In a passenger management machine equipped with a boom configured to be stowable on the side of the fuselage, closing the open / close cock of the left or right boom, and then steering the fuselage to the side opposite to the open / close cock closed side, Since the boom on the opening / closing cock closing side is automatically stored on the side of the body, it is possible to eliminate the trouble of simultaneously performing the turning operation and the opening / closing operation of the boom at the time of turning the body.

[Brief description of the drawings]

FIG. 1 is an overall side view of a passenger management machine according to the present invention.

FIG. 2 is a plan view thereof.

FIG. 3 is a flow layout diagram of a chemical solution.

FIG. 4 is a configuration diagram around an instrument panel in a driver's seat.

FIG. 5 is a layout view of an operation panel for spraying a chemical solution.

FIG. 6 is a flowchart of boom automatic opening / closing control.

FIG. 7 is a front view when the body is horizontal.

FIG. 8 is a front view when the body is tilted.

FIG. 9 is a main part front view showing a configuration for hanging down the boom.

FIG. 10 is an overall side view of a passenger management machine showing a cooling structure around an engine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ride control machine Front and rear wheels 5 Engine 6 Steering handle 7 Instrument panel 8 Seat 9 Control tank 11 Transmission case 12a, 12b, 12c Boom 14a, 14b Nozzle 15 Actuator 21a, 21b, 21c Boom opening / closing cock

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B043 AA03 AB11 AB19 BA03 BB07 DA15 2B121 CB03 CB23 CB33 CB42 CB69 CB70

Claims (1)

[Claims] The front and rear wheels have substantially the same diameter, the front and rear wheels are independently driven, and the front and rear four wheels can be steered. The front of the fuselage is composed of three booms for spraying a chemical solution, a left side, a center and a right side. And in the passenger management machine equipped with a boom configured so that the left and right booms can be stored on the sides of the fuselage, respectively, the opening and closing cock of the left or right boom is closed,
Next, when the body is steered to the side opposite to the opening / closing cock closing side, the boom on the opening / closing cock closing side is stored in the side of the body.