JPH0563123B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a mechanism for adjusting the opening of a shutter along the bottom of a hopper in a fertilizer applicator connected to a tractor.

(b) Prior art and its problems Conventionally, an agricultural sprayer that is connected to a tractor and sprays fertilizers and pesticides while matching the traveling speed of the tractor is as described in, for example, Japanese Utility Model Application Publication No. 56-52926. The technology was known to the public.

However, in this prior art, the opening/closing mechanism of the shutter at the bottom of the hopper is located outside the hopper of the fertilizer applicator, so there is a possibility that the electrical control mechanism may be damaged if it hits an obstacle during operation. It was highly sensitive.

Another conventional technique is the technique described in Japanese Utility Model Application Publication No. 59-122024, in which the shutter opening/closing lever along the bottom of the hopper is extended forward and upward for a long time, so that the operator can sit in the driver's seat. This lever can be operated while sitting and facing backwards.

However, recently, as cabins have been installed in the driver's seat, the worker cannot open or close the shutter while sitting in the driver's seat, and the worker must get off the tractor and operate the shutter each time. The inconvenience of not being able to do so was a result of this.

The present invention provides an electric remote control mechanism that allows the operator to adjust the opening degree of the shutter while sitting in the driver's seat, and the electric remote control mechanism is comprised of a top link and a lower link located at the rear of the tractor. By placing it inside a triangular space, damage caused by collisions with obstacles was minimized.

(C) Means for Solving Problems The purpose of the present invention is as described above, and next, the configuration for achieving the purpose will be explained.

The shutter 22, which is provided with a spraying adjustment port 23 at equal intervals to the spraying port, can be slid freely along the spraying port at the bottom of the hopper 10, and the operating switch S1 provided near the driver's seat 2 of the tractor can be operated to open or disconnect the shutter. The motor M is rotated in forward and reverse directions, and the opening/closing lever 24 driven by the motor M is operated to open the shutter 22.
In the shutter drive mechanism that slides the motor M, the opening/closing lever 24, and the opening/closing lever 24,
limit switch on the opening side that determines the drive width of the
The limit switch Lb on the closing side is supported by a bracket 30 protruding from the hopper 10, and the bracket 30 is placed at a position surrounded by the top link 5 and the lower link 4 at the front part of the tractor side.

(d) Embodiment The object and structure of the present invention are as described above, and next, the structure of the embodiment shown in the attached drawings will be explained.

FIG. 1 is a side view of a tractor with a cabin equipped with an embodiment, FIG. 2 is an enlarged perspective view of essential parts of the embodiment, and FIGS. 3 and 4 are electrical circuit diagrams of the embodiment.

In Figures 1 and 2, 1 is the body of the tractor, with a cabin 3 that covers the driver's seat 2 attached to the rear upper part, and three points on the back consisting of two lower links 4 and one top link 5. It has a link part.

6 is a battery provided in the engine section of the aircraft. Reference numeral 7 denotes a lift arm pivotally attached to the back of the fuselage 1. It is connected to the center of the lower link 4 by a rod 8. When the operating lever (not shown) is tilted forward, the arm 7 rotates counterclockwise to lower the lower link. Pull up link 4.

Reference numeral 10 is a hopper with a lid plate 11 placed on the upper surface and connected with a hinge so that it can be opened and closed freely, and the front and rear sides are inclined downwardly and continue to the bottom surface 12 in an arc shape.

Reference numeral 13 denotes a rectangular underframe on which the hopper 10 is mounted.Four groove-shaped beams are assembled into a rectangular frame to have a width approximately one third of the hopper 10.
The two leg pieces 14 established on the rear crosspiece are attached to the hopper 10.
The hopper 1 is attached to the center of the rear slope, and the two pillars 15 established on the front crosspiece of the underframe 13 are slightly bent.
The top end of the support post 15 is coupled to a beam 16 of angle material attached to the upper edge of the slope along the center of the front slope of the pillar 15.

The hopper 10 connects two lower links 4 to a base plate 17 protruding from the bent portions of two pillars 15, and connects a top link 5 to a protrusion 18 provided at the center of a beam 16. The hopper 10 is raised and supported in a horizontal position via the lower link 4 and the top link 5, which constitute a three-point link with the base plate 17 and the projecting piece 18. When the hopper 10 is removed from the three-point link, the underframe 13 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).
A built-in worm is attached to the drive shaft 19 that enters from the front, and a worm gear is attached to the driven shaft (not shown) that comes out to both sides, and the drive shaft 19 is connected to the power output shaft (not shown) of the tractor to connect the driven shaft. Rotate at a reduced speed.

Reference numeral 21 denotes a stirring impeller provided at the bottom of the hopper 10. A large number of blades arranged at a certain 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 attached to the hopper 10. The fertilizer is supported by a bearing (not shown) at the side end of the hopper, and a stirring impeller 21 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 spray ports at a constant pitch over the entire length of the bottom part 12, and a long shutter 22 along the bottom part is attached to the hopper 10.
It is fitted into a guide (not shown) attached to the bottom of the sprayer 0 and held so that it can freely slide in the longitudinal direction and parallel to the spray opening.

The shutter 22 is also provided with a large number of spray adjustment ports 23 as shown in FIGS. 2 and 5, and the pitch of the spray adjustment ports 23 is made equal to the pitch of the spray ports of the hopper 10. 24 is a short opening/closing lever that is slightly bent, and is placed in the center of the hopper 10 and parallel to the front slope.
The metal 25 of the elbow part is planted on the substrate 17, loosely fitted onto the pin, and supported so as to be freely slidable.

26 is a relay rod made of a round bar, whose front end is bent laterally and fitted into the round hole at the lower end of the opening/closing lever 24, extended horizontally to the rear, and its rear end is bent downward, and this rear end is connected continuously. Fit into the round hole at the front end of member 27. The continuous connecting member 27 has an L-shape when viewed from above, and a metal 28 at the elbow part is loosely fitted into a pin set on the front crosspiece of the support column 15, and the rear end is connected to the shutter 22 by a pin 29.

As shown in FIG. 2, when the opening/closing lever 24 is moved to the front side A, the relay rod 26 moves rearward as shown by arrow A1, and the connecting member 27 rotates clockwise as shown by arrow A2, so that the shutter 22 moves to the right as shown by arrow A3, the spray adjustment port 23 of the shutter 22 aligns with the outlet of the hopper 10 and opens this outlet, and when the opening/closing lever 24 is moved to the opposite direction B, the relay rod 26 moves to the arrow B1. As shown, the connecting member 27 rotates counterclockwise as shown by arrow B2, so the shutter 22 moves to the left as shown by arrow B3, and the spraying adjustment port 23 of the shutter 22 is removed from the outlet of the hopper 10. Close the lever exit.

The opening/closing mechanism described above is a prior art developed in 1983.
The configuration is substantially the same as that described in Japanese Patent No. 122024, and in the prior art, the opening/closing lever 24 was made longer and manually operated by the operator.

In this embodiment, the opening/closing lever 24 is shortened and the motor M
The spray adjustment port 23 of the shutter 22 can be opened and closed by remote control.

In this embodiment, an angle bracket 30 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 so as to protrude forward and downward. The pins 31, 31 are planted, the collars 32, 32 are placed on the bracket 3, and the band-like guide pieces 33 are attached to the pins 31, 31.
An elongated guide groove 34 is formed between the opening and closing lever 24, and the upper end of the opening/closing lever 24 is inserted into this guide groove to be held freely moving forward and backward.

35 is a scale attached to the top surface of the bracket 30, and limit switches La and Lb are placed on both sides of this scale.
, the opening side limit switch La can be changed in its mounting position through the elongated hole 36 of the bracket, and the closing side limit switch Lb is fixed.

M is a motor that moves the opening/closing lever 24, and is attached to a key-shaped seat plate 37 fixed to the center of the guide piece 33, and the chain ring 3 on the shaft 50 is driven by the motor shaft.
8, and chain rings 39, 39 loosely fitted to the pins 31, 31.
Hang a chain 40 on the chain, connect the chain to a pin 41 protruding from the opening/closing lever 24, and connect the motor M.
The opening/closing lever 24, the relay rod 26, and the connecting member 27 are moved forward or backward through the chain 40 by forward and reverse rotation.

Reference numeral 42 denotes a switch box provided near the driver's seat 2 of the tractor, which is equipped with an operation switch S1 and an indicator light P1, and is connected in the middle of an electric path from the battery 6 of the tractor 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 according to the wiring diagram shown in the figure.

In this embodiment, when the lever 43 of the operating switch S1 is tilted toward the front end, its contact piece comes into contact as shown in FIG.
1 lights up, and as the motor M rotates in the D2 direction, the chain 40 moves counterclockwise in FIG. 26 and the sprinkling adjustment port 2 of the shutter 22 via the connecting member 27.
3 coincides with the spraying port of the hopper 10 and opens the spraying port.

When the spraying adjustment port 23 of the shutter 22 and the spraying port of the hopper 10 match and the spraying port is fully opened,
The opening/closing lever 24 pushes the lever of the limit switch La and turns off the switch, so that the indicator light P1 goes out and the motor M also stops, and accordingly, the opening/closing lever 24 and the shutter 22 stop.

If the mounting position of the limit switch La is changed using the elongated hole 36, the amount of movement of the shutter 22 will be different, so that the opening degree of the outlet of the hopper 10 can be adjusted.

As a result, if the limit switch La is fixed at a certain position and the shutter 22 is operated in the opening direction, it is possible to maintain a certain opening degree, and each time the shutter 22 is opened or closed, the appropriate shutter 22 is opened. There is no longer a need to set the opening degree.

Next, when the switch lever 43 of the operation switch S1 is tilted backward, its contacts come into contact as shown in FIG. 4, current flows in the direction of arrow E1, and motor M
Rotate clockwise, which is direction 2.

Due to this rotation of the motor M, the chain 40 moves clockwise in FIG. 2, and the opening/closing lever 24 connected to the chain moves rearward as shown by arrow B.
Shutter 2 via relay rod 26 and continuous rod 27
2 moves in the direction of arrow B3, and the spray adjustment port 23 of the shutter 22 comes off the outlet of the hopper 10, closing this outlet.

When the shutter 22 closes the spraying port of the hopper 10, 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 stops.

Since the stop position of the shutter 22 is constant when the exit of the hopper 10 is closed, the limit switch Lb is fixed to the bracket 30. In addition, the limit switches La and Lb close their internal contacts immediately when the opening/closing lever 24 is released.

Further, in place of the chain 40, a timing belt or other transmission member may be used.

(E) Effects of the Invention Since the present invention is constructed as described above, it achieves the following effects.

First, since the opening and closing of the shutter 22 in the fertilizer applicator can be operated using the motor M and a switch near the tractor seat, the operator does not need to get off the tractor when opening and closing the shutter 22, making the operation easy and It has become possible to do this more efficiently.

Second, when the cabin 3 is attached to the tractor, it becomes impossible to reach out from inside the cabin and adjust the shutter 22; however, in such a case, the operation switch S1 of the switch box 42 Since the opening degree of the shutter 22 can be adjusted by the operation, the operator does not need to get on and off the tractor.

Thirdly, a bracket 30 is provided in which the motor M for operating the shutter 22 and the limit switches La and Lb are located at the front part of the hopper 10 on the tractor side, at a position surrounded by the top link 5 and the lower link 4.
During work, the motor M and the connecting member 27 can be protected in the space surrounded by the upper top link 5 and the left and right lower links 4, 4. We were able to overcome the problem of collision and damage to M and limit switches La and Lb.

Fourth, motor M and limit switches La, Lb
By arranging it at the front of the hopper 10,
Switch box 4 installed near the driver's seat 2 of the tractor
The wire harness that needs to be placed between the two can now be wired in a compact manner.

[Brief explanation of the drawing]

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; Fig. 2 is an enlarged perspective view of the main parts of the first embodiment; 3 and 4 are wiring diagrams of the embodiment. 1... Tractor body, 10... Hopper, 2
2...Shutter, 24...Opening/closing lever, 26,
27... Intermediary member, M... Motor, 40... Chain, S1... Operation switch.

Claims (1)

[Claims] 1. The shutter 22, which is provided with a spraying adjustment port 23 at the same interval as the spraying port, is made slidable along the spraying port at the bottom of the hopper 10, and the operating switch S1 provided near the driver's seat 2 of the tractor is connected/disconnected. A shutter drive mechanism that rotates a motor M in forward and reverse directions when operated, and slides the shutter 22 with an opening/closing lever 24 driven by the motor M,
The motor M, the opening/closing lever 24, and the opening-side limit switch La and closing-side limit switch Lb that determine the driving width of the opening/closing lever 24 are supported by a bracket 30 protruding from the hopper 10,
A fertilizer applicator characterized in that the bracket 30 is arranged at a position surrounded by a top link 5 and a lower link 4 at the front part on the tractor side.