JPS61289809A - Opening/closing apparatus of agricultural sptinkler - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an opening/closing device in an agricultural spreader connected to a tractor with a cabin, in which a shutter along the bottom of a hopper can be remotely controlled from inside the cabin.

[Conventional technology and its problems]

Conventional agricultural spreaders (for example, Utility Model Application No. 122024/1989) that are connected to a tractor and spray fertilizers and pesticides have a shutter opening/closing lever on the bottom of the hopper that extends forward and upward, allowing the operator to sit in the driver's seat. I am operating this lever while sitting in the room with my back turned.

However, as modern tractors are equipped with a cabin in the driver's seat, the shutter cannot be opened or closed until the worker is seated in the driver's seat, and each worker must get off the tractor and operate the shutter. This is an inconvenience.

An object of the present invention is to provide an opening/closing device for an agricultural sprayer that solves these problems.

[Means for solving problems]

The present invention relates to an agricultural spreader that is connected to a tractor with a cabin to spray fertilizers and agricultural chemicals, and in which a No. 11 opening/closing lever is connected to a shutter along the bottom of a hopper via an intermediary member, and the lever is driven by a motor. The transmission member or the piston rod of the hydraulic cylinder is connected, and the operation switch for the motor or hydraulic cylinder is provided at the driver's seat in the cabin.

〔Example〕

In Figures 1, 2, and 5, 1 is the body of a tractor, and a cabin 3 that covers the driver's seat 2 is attached to the rear upper part.
It has a three-point link consisting of two lower links 4 and one top link 5 on the back. 6 is a battery provided in the engine section of the aircraft. Reference numeral 7 denotes an arm pivotally attached to the back of the fuselage 1, which is connected to the center of the lower link 4 by a rod 8. When a control lever (not shown) is tilted forward, the arm 7 rotates counterclockwise and connects the lower link. Raise 4.

10 is a hopper with a considerable width, and there is a cover plate 1 on the top.
The front and rear sides are connected to each other so that they can be opened and closed using a butterfly plate, and the front and rear sides slope downward to form an arcuate bottom surface 12. Reference numeral 13 denotes a rectangular underframe on which the hopper 10 is placed.The hopper 10 is made of four grooved beams in a rectangular frame, and the width of the hopper 10 is 6. The leg piece 14 is attached to the center of the rear slope layer of the hopper 10, and the two supports 15 established on the front crosspiece of the underframe 13 are slightly bent to complete the hopper 10.
The top end of the column 15 is connected to a beam 16 of angle material attached to the upper edge of the slope along the center of the front slope.

The hopper 10 has two lower links 4 connected to a base plate 17 protruding from the bent portions of two pillars 15, and a top link 5 connected to a protrusion 18 provided at the center of a beam 16. The hopper 10 is connected to the tractor body 1 through the three-point links 4 and 5 by the base plate 17 and the protrusion 18, and when the arm 7 rotates, the three-point link 4.5 raises the hopper 10 to a horizontal position. When the hopper 10 is removed from the three-point link, the underframe 13 is placed on the ground to support the hopper.

20 is a gear box provided at the center of the bottom of the hopper 10, which houses a worm and a worm gear (both not shown).The worm is attached to the drive shaft 19 that enters from the front, and the worm gear is attached to the driven shaft (not shown) that comes out from both sides. The drive shaft 19 is connected to a power take-off shaft (not shown) of the tractor, and the driven shaft is rotated at a reduced speed. 21 is a stirring impeller provided at the bottom of the hopper 10, in which a large number of blades lined up at a constant pitch are attached to a core shaft, the inner end of the core shaft is connected to a driven shaft coming out of the gear box 21, and the outer end is connected to the hopper 10. It is supported by a bearing (not shown) at the side end, and an impeller 51 is rotated at the bottom of the hopper 10 to stir and feed out the fertilizer. This hopper 10 has a large number of horizontally elongated outlets at a constant pitch over the entire length of the bottom surface 12, and a long shutter 22 along the bottom surface of the hopper is attached to a guide (not shown).
To make the size, total number, and pitch of the exit phantom equal to the exit of the hopper 10, 024 is a short opening/closing lever that is slightly bent, so it is placed in the center of the hopper 10, parallel to the front slope, and the metal 25 of the elbow part is connected to the board 17. Plant it in the bottle, loosely fit it into the bottle, and support it so that it can swing freely.

Reference numeral 26 is a relay rod made of nine pieces of wood, and its front end is bent in any direction and fitted into the open "□" hole. It loosely fits into a bottle installed on the front crosspiece, and the rear end is connected to the shutter 22 by a bottle 29.

As shown in FIGS. 2 and 5, when the opening/closing lever is moved toward the front side, the relay rod 26 moves toward the rear side as shown by arrow A1, and the connecting piece 2
7. rotates clockwise as shown by arrow A2, the shutter 22 moves to the right as shown by arrow A3, and the exit 23 of the shutter aligns with the exit of the hopper 10, opening this exit and turning the opening/closing lever 24 in the opposite direction. When moved to the rear side B, the relay rod 26
moves forward as shown by arrow B1, and the continuous joint piece 27 moves forward as shown by arrow B1.
2, the shutter 22 moves to the left as shown by arrow B3, and the exit flap of the shutter is disengaged from the exit of the hopper 10, closing this exit.

The above opening/closing mechanism is based on the prior art (Utility Model Publication No. 59-122024)
In the prior art, the opening/closing lever was made longer and operated manually by the operator.

In this embodiment, the opening/closing lever 24 is shortened and linked to a motor or hydraulic cylinder so that the hopper can be opened and closed by remote control.

In the first embodiment, an angle platen (30e) is welded at right angles to the center of the beam 16 attached to the front slope of the hopper 10 shown in FIGS. 1 and 2 to protrude forward and downward. Plant bottle 31.31 and color 32.3
2, and a band-shaped guide piece 33 is attached to the bin 31° 31 to form a long and narrow guide groove 34 between it and the bracket 30, and the upper end of the opening/closing lever 24 is inserted into this guide groove so that it can move freely back and forth. 035 to be held is a scale attached to the top surface of the bracket 30, and limit switches La,
Lb is attached, and the limit switch La on the opening side is installed so that its position can be changed through the elongated hole 36 of the bracket, and it is fixed to the glue mint switch Lb'' on the closing side. It is attached to a house-shaped seat plate 37 fixed in the center of the motor shaft, and loosely fitted into the armor ring 38 on the motor shaft and the pin 31.

A chino 40 is hung on the chino 39, and the chino is tied in the middle to a bottle 41 protruding from the opening/closing lever, and the opening/closing lever 24 is moved to the front or rear side via the chino 40 by forward and reverse rotation of the motor M. 42 is a switch box installed in the driver's seat 2 of the tractor, and is equipped with an operation switch S1 and an indicator light Pl.
It is connected in the middle of the electric path from the tractor's battery 6 to the motor M and limit switches La and Lb. Here, the operating switch S1 is a 3-contact, 2-set changeover switch, and the limit switches La and Lb are normally closed contacts. Connect as shown in the wiring diagram.

In this first embodiment, the lever 4 of the operation switch S1
When 3 is pushed forward, its contact pieces will come into contact as shown in Figure 3.
The current flows in the direction of arrow D1, the indicator light PL lights up, and the motor M rotates in the counterclockwise direction of arrow D2. This rotation of the motor M causes the chino 40 to move counterclockwise in FIG. 2, and the opening/closing lever 24 connected to the chino moves in the direction of arrow A.
'1AF (Since it moves to II, the relay rod 26 and the continuous joint piece 27
The shutter 22 is moved in the direction of the arrow A3 through the shutter 22 so that the outlet 23 of the shutter coincides with the outlet of the hopper 10 and opens this outlet. When the shutter 22 fully opens the hopper outlet, the opening/closing lever 22 moves to lever 1 of the limit switch La.
Since the lever switch is turned off, the indicator light P1 goes out and the motor M also stops, with the result that the opening/closing lever 24 and the shutter 22 stop. Note that if you change the mounting position of the limit switch La using the elongated hole 36, the shutter 12
Since the amount of movement of the two is different, the 08 degree angle of the outlet of the hopper 10 can be adjusted.

When the switch lever 43 of the switch S1 is pushed backward, its contacts come into contact as shown in Figure 4, nine currents flow in the direction of the arrow E1, the indicator light P1 lights up, and the motor M moves in the direction of the arrow E2.
rotate clockwise. This rotation of motor M causes the second
In the figure, the shutter 22 moves through the piece 27 in the direction of the arrow B3, and the shutter outlet deviates from the outlet of the saw hopper 10, closing this outlet. shutter 2
2 closes the outlet of the hopper, the opening/closing lever 24 pushes the lever of the limit switch Lb and turns off this switch, so the indicator light P1 goes out and the motor M also stops, and accordingly, the opening/closing lever 24 and the shutter 22 Since the stop position of the shutter 22 is constant when closing the outlet of the hopper 10, the limit switch Lb is fixed to the bracket 30. Further, the limit switches La and Lb close their internal contacts immediately when the opening/closing lever U is released.

In the second embodiment, as shown in FIG. 5, an angle bracket 44 is welded at right angles to the center of the beam 16 attached to the front slope of the hopper 10, and protrudes forward and downward. 046 to which the hydraulic cylinder C is attached and connects the piston rod 45 to the upper end of the opening/closing lever 24 is the bracket 4.
With the scale attached to the top surface of 4, limit switches Wa and Wb are installed at both ends of this scale, and the opening side limit switch Wa=<The mounting position can be changed using the elongated hole 47 of the bracket, and the closing side limit switch Fixed wb.

■ is a solenoid valve attached to the bracket 44, and the flow control valve R
It is then connected to the hydraulic unit of the tractor shown in Nos. 6 and 7, and pressure oil is sent to the hydraulic cylinder C to move the piston rod 45 forward and backward. 48 is a switch box installed in the driver's seat of the tractor, which includes an operation switch S2 and two indicator lights P2. P
3i, and is connected in the middle of the electric path from the tractor's battery 6 to the solenoid valve V and limit switches Wa and Wb. The operation switch S2 uses a 3-contact changeover switch,
Limit switches Wa and Wb are normally closed contacts,
These switches, battery 6, indicator light P2. Connect P3 and solenoid valve ■ as shown in the wiring diagram shown in Figure 6.7, and connect solenoid valve ■, flow control valve R, and hydraulic unit U to the same
Connect the piping according to the piping diagram in Figure 7.

In this second embodiment, the lever 4 of the operation switch S2
When 9 is pushed forward, its contact piece will come into contact as shown in Figure 6,
Electric current flows in the direction of arrow F1, indicator light P2 lights up, the solenoid on the left side of solenoid valve V is energized, the spool is attracted to the left, and the pressure oil sent from hydraulic unit U flows in the direction of arrow P2. Pressure oil flows in the direction of arrow F3 and enters the front part of hydraulic cylinder C, and the pressure oil in the rear part flows in the direction of arrow F3 and returns to hydraulic unit U. As a result, the piston rod 45 is drawn into the hydraulic cylinder C as shown by arrow F4, and the opening/closing lever connected thereto moves forward (as shown by arrow AIf-I in FIG. 5), so that the relay rod 26 and the link Shutter 22 via joint 27
moves in the direction of arrow A3, and the exit flap of the shutter coincides with the exit of the hopper 10 to open this exit.

When the shutter 22 fully opens the hopper outlet, the opening/closing lever 24 pushes the lever of the limit switch Wa and turns off this switch, so the indicator light P2 goes out and the solenoid valve V
The solenoid is also deenergized, and accordingly, the piston rod 45, opening/closing lever 24, and shutter 22 are stopped. Note that long hole 4
7, the amount of movement of the shutter 22 changes when the limit switch Wa is mounted in a different position, so that the opening degree of the outlet of the hopper 10 can be adjusted.

Next, when the switch lever 49 of the operation switch S2 is tilted to the rear, its contact piece comes into contact as shown in FIG.
1, the indicator light P3 lights up, the solenoid on the right side of the solenoid valve V is energized, and the spool is attracted to the right.
The pressure oil sent out from the hydraulic unit U flows in the direction of arrow G2 and enters the rear part of the hydraulic cylinder C, and the pressure oil in the front part flows in the direction of arrow G3 and returns to the hydraulic unit U. As a result, the piston rod 45 is pulled into the hydraulic cylinder C.
Since the opening/closing lever 24 connected to this moves rearward as shown by arrow B1 in FIG. 5, the shutter 22 moves in the direction of arrow B3 via the relay rod 26 and the connecting piece 27, and the shutter exit Remove the outlet from the hopper 10 and close this outlet. When the shutter 22 closes the hopper outlet (n), the opening/closing lever presses the lever of the limit switch wb to turn off this switch, so the indicator light P3 goes out and the solenoid of the solenoid valve V is also deenergized. Then, the piston rod 45, the opening/closing lever, and the shutter 22 stop. Note that when closing the outlet of the hopper 10, the shutter 22
Since the stopping position of is constant, the limit switch wb is fixed to the bracket 30 or the limit switch Wa,
Wb closes the internal contact immediately when the opening/closing lever 24 is released.

The above describes two embodiments of the present invention; the present invention is not limited to these embodiments, and the design can be changed within the scope of the invention. For example, the chain 40 may be replaced with a timing belt or other transmission member. May be used.

〔Effect of the invention〕

According to the present invention, in an agricultural spreader connected to a tractor with a cabin, the operation switch for the motor or hydraulic cylinder on the bottom of the hopper is provided in the driver's seat in the cabin, so the shutter can be opened and closed very easily using this operation switch. This eliminates the trouble of the operator getting off the tractor each time to open and close the shutter, and has the effect of greatly improving the working efficiency of the agricultural spreader installed in the tractor with a cabin.

[Brief explanation of drawings]

The drawings show two embodiments of the present invention. Fig. 1 is a side view of the first embodiment and a tractor with a cabin equipped with the same, and Fig. 2 is an enlarged perspective view of the main parts of the first embodiment. , 3rd
Figures 6 and 4 are wiring diagrams of the first embodiment, Figure 5 is an enlarged perspective view of the main parts of the second embodiment, and Figures 6 and 7 are wiring diagrams of the second embodiment. . In addition, 1 is the body of the tractor, 10 is the hopper, 22 is the shutter, 24 is the opening/closing lever, 26 and 27 are the intermediary members, M is the motor, 40 is the conduction member, C#'i night pressure cylinder Jl'
%45 is its piston rod, and Sl and 82 are operation switches. Figure 5 Figure 7 -

Claims (1)

[Claims] In an agricultural spreader that is connected to a tractor with a cabin and spreads fertilizers and agricultural chemicals, an opening/closing lever is connected to the shutter along the bottom of the hopper via an intermediary member, and a transmission member or hydraulic cylinder driven by a motor is connected to this lever. An opening/closing device for an agricultural spreader, characterized in that the piston rods of the two are connected, and an operating switch for the motor or hydraulic cylinder is provided in the driver's seat in the cabin.