JP3852785B2 - Spreader - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a spreader. Specifically, it relates to a spreader suitable for spraying powdered materials such as fertilizers. More specifically, the present invention relates to a spreader that is pulled by a tractor and spreads fertilizer and the like.
[0002]
[Prior art]
As a conventional spreader, Japanese Patent Application Laid-Open No. 61-289809 “Opening and closing device for agricultural spreader” (conventional example) is known. The opening / closing device is connected to a shutter along the bottom surface of the hopper via an intermediate member, and a connecting member driven by a motor or a piston rod of a hydraulic cylinder is connected to the opening / closing lever. An operating switch for operating the cylinder is provided at the driver's seat in the cabin, and an opening-side limit switch and a closing-side limit switch for setting the opening of the shutter are provided at both ends of the opening / closing lever rotation width. The switch can be adjusted in the vicinity of the open / close lever.
[0003]
[Problems to be solved by the invention]
However, in the conventional example, the size of the apparatus is increased, and the volume occupying the inner portion of the mounting portion such as a three-point link is increased.
[0004]
[Means for Solving the Problems]
The present invention, established a hopper coupled to the tractor by a three-point link via the supporting frame of the spreader, and open the shutter mounted on the hopper bottom, the bottom plate side of the support frame inside and hopper bottom shutter near And an adjustment box arranged at a position that does not interfere with the tractor mounting part such as a three-point link . The adjustment box accommodates a motor, a pinion gear, a rack, and a slide plate, and the slide plate is provided on the shutter side. through the installed and connected rod while being connected to the shutter, spreader, characterized by opening and closing the shutter by being reciprocated through the movement rotation of the pinion and the rack by the motor forward and reverse rotation,
[0005]
I will provide a.
[0006]
[Action]
When the motor is rotated forward and backward, the connected shutter is opened and closed by the forward and reverse rotation of the motor. As the shutter is opened and closed, the object to be stored in the hopper is sprayed.
[0007]
【Example】
FIG. 1 showing a front view of an embodiment of the present invention, FIG. 2 showing an enlarged perspective view of the same part, FIG. 3, FIG. 4, and FIG. 5 showing a partially enlarged sectional view of an adjustment box that is an enlarged sectional view of the same part. 6 will be described with reference to FIG. 6 showing a partially enlarged perspective view of the dial frame.
[0008]
11 is a tractor. In this embodiment, a cabin 12 is installed on the tractor 11. 13 is a spreader. In this embodiment, the spreader is a fertilizer spreader that spreads fertilizer in powder form. Reference numeral 14 denotes a three-point link, which connects the tractor 11 and the spreader 13 via a support frame 15. Reference numeral 16 denotes a hopper, which is supported by the support frame 15. The hopper 16 is loaded with a material to be spread, for example, powdered fertilizer. Reference numeral 17 denotes a mission, which is installed below the hopper 16. Reference numeral 18 denotes a spray tube, which is installed below the hopper 16. The spray cylinder 18 is swung by the operation of the mission 17 and sprays fertilizer.
[0009]
Reference numeral 21 denotes a bottom plate which constitutes the bottom surface of the hopper 16 and has four fan-shaped openings 22 arranged radially. Reference numeral 23 denotes a shutter made of a plate-like body partially provided with an opening. The shutter 23 is installed so as to overlap the bottom plate 21 on a center shaft 24 attached to the center of the bottom plate 21 and connected to the mission 17. By rotating the shutter 23 around the center shaft 24 and aligning the opening 22 of the bottom plate with the opening on the shutter 23 side, the bottom surface of the hopper 16 is opened, and the positions of both openings are shifted. The closed portion is closed by closing the opening 22 on the 21 side, and the opening amount of the bottom surface of the hopper 16 is selected by selecting a state between the open state and the closed state. Reference numeral 25 denotes a connecting rod whose tip is attached to the periphery of the shutter 23. Reference numeral 26 denotes a bracket, and one end is attached to the connecting rod 25.
[0010]
31 is an adjustment box. The adjustment box 31 is substantially a rectangular parallelepiped, and is installed on the inner side of the support frame 15 and on the side surface of the bottom plate 21 on the bottom surface of the hopper 16. 32 is a slide plate. The slide plate 32 is formed of a plate-like body and is accommodated in the adjustment box 31 and supported by the guide material 33 from above and below so as to be slidable in the width direction in the adjustment box 31 in the left and right directions in FIG. A bracket 26 penetrating a long hole 34 provided in the width direction of the adjustment box 31 is attached to the surface on the hopper 16 side which is one surface of the slide plate 32. Reference numeral 35 denotes a regulating rod. The restriction bar 35 is attached horizontally at a substantially right angle to the surface which is the other surface of the slide plate 32. Reference numeral 36 denotes a rack that is fixed to the surface of the slide plate 32. Reference numeral 37 denotes a pinion gear that meshes with the rack 36. Reference numeral 38 denotes a motor. The motor 38 rotates the pinion gear 37 forward and backward. 39 is a control box. The control box 39 is installed beside the driver's seat in the cabin 12 of the tractor 11, and performs forward / reverse rotation and rotation stop operation of the motor 38.
[0011]
41 is a dial frame. As shown in FIG. 6, the dial frame 41 has a U-shaped cross section, the surface plate of the adjustment box 31 is sandwiched between the U-shaped portions, and is movable along the surface plate as shown in FIG. It is. Reference numeral 42 denotes an instruction dial mounting hole. An instruction dial 43 is detachably attached to the instruction dial attachment hole 42 with a nut. A scale corresponding to the opening of the shutter 23 is written on the surface of the adjustment box 31 along the width direction in which the instruction dial 43 moves. 44 is a stopper. The stopper 44 is installed at the top position on the surface side of the surface plate of the dial frame 41 and at the height position of the restriction bar 35. Reference numeral 45 denotes one limit switch. The limit switch 45 is installed on the back side plate of the dial frame 41 at the height position of the restriction bar 35 and more than the stopper 44 and the pinion gear 37. 46 is the other limit switch. The limit switch 46 is installed at the lower end height position of the slide plate 32 on the opposite end to the limit switch 45. The limit switch 45 and the limit switch 46 are installed in the motor 38 drive circuit and sensed to turn off the motor operation.
[0012]
Next, the operation of the embodiment will be described. In order to increase the opening of the shutter 23, the instruction dial 43 is moved in the width direction of the adjustment box 31 to adjust the desired maximum opening. Next, the switch of the control box 39 is operated to rotate the motor 38 forward. Then, the pinion gear 37 is rotated and the rack 36 meshing with the pinion gear 37 moves to the lower left side in FIG. Then, the slide plate 32 to which the rack 36 is fixed is also moved to the left side in FIG. As the slide plate 32 moves, the bracket 26 and the connecting rod 25 are also moved diagonally to the lower left in FIG. Then, the shutter 23 attached to the connecting rod 25 moves in the direction in which the openings of the bottom plate 21 and the shutter 23 are aligned and the hole is enlarged. When it is moved to a desired opening degree, the regulating rod 35 attached to the slide plate 32 comes into contact with the limit switch 45, the motor drive circuit is disconnected, and the drive of the motor 38 is stopped. If the connecting rod 35 does not stop even if it contacts the limit switch 45, it will collide with the stopper 44 provided on the dial frame 41 and stop.
[0013]
In order to reduce the opening of the shutter 23, the switch of the control box 39 is operated to rotate the motor 38 in the reverse direction. Then, the pinion gear 37 is rotated and the rack 36 meshing with the pinion gear 37 moves to the right side in FIG. Then, the slide plate 32 to which the rack 36 is fixed is also moved to the right side in FIG. As the slide plate 32 moves, the bracket 26 and the connecting rod 25 are also moved obliquely upward and to the right in FIG. Then, the shutter 23 attached to the connecting rod 25 moves in the direction in which the opening between the bottom plate 21 and the shutter 23 becomes smaller in the shift hole. When the slide plate 32 is moved to a desired opening degree, the slide plate 32 comes into contact with a limit switch 45 installed at a position where the shutter 23 is completely closed by the movement of the slide plate 32, the motor drive circuit is cut off, and the drive of the motor 38 is stopped. Is done.
[0014]
【The invention's effect】
Therefore, in the present invention, since the adjustment box is installed near the shutter, the problem of interference with the tractor mounting portion is eliminated.
[Brief description of the drawings]
FIG. 1 is a front view of an embodiment of the present invention. FIG. 2 is a partially enlarged perspective view of an embodiment of the present invention. FIG. 3 is a partially enlarged sectional view of an embodiment of the present invention. Partially enlarged sectional view of an example [FIG. 5] Partially enlarged sectional view of an embodiment of the present invention [FIG. 6] Partially enlarged perspective view of an embodiment of the present invention [Explanation of symbols]
16 Hopper 23 Shutter 32 Slide plate 38 Motor

Claims (1)

A hopper connected to the tractor by a three-point link via the supporting frame of the spreader, and open the shutter mounted on the hopper bottom, installed three-point link on the bottom plate side of the support frame inside and hopper bottom shutter near An adjustment box that is disposed at a position that does not interfere with the tractor mounting portion, such as a motor, a pinion gear, a rack, and a slide plate. The slide plate is installed on the shutter side. A spreader that is connected to a shutter via a connecting rod and that opens and closes by reciprocating through rotation of a pinion and movement of a rack by forward and reverse rotation of a motor.

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