JPH0453228Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a fertilizer spreader that spreads powdered or granular fertilizer.

[Prior Art] A conventional fertilizer spreader of this type includes a machine frame connected to a tractor, a hopper fixed to the machine frame, and a fertilizer drop opening drilled at the bottom of the hopper for opening and closing. Consists of a shutter plate, an operating rod that slides the shutter plate in the left and right longitudinal directions of the hopper, and an agitator that rotates with rotational power from the output shaft of the tractor and transfers the fertilizer in the hopper to the droplet. There is something to be done.

On the underside of the shutter plate of this fertilizer spreader,
A shaft projects vertically, and an angle lever (or crank) that is linked to the shaft is rotatably attached to a shaft that stands on a protrusion that projects horizontally from the side of the machine frame. .

One end of this angle lever is approximately U-shaped, and the shaft on the lower surface of the shutter plate engages with this U-shaped groove, and the other end of the angle lever is fixed horizontally to the side of the machine frame. It is connected to the lower end of the operating rod which is pivoted on the shaft by a connecting rod.

In this way, when you rotate this operating rod back and forth,
An angle lever formed and connected by a link mechanism rotates in the horizontal direction, and a shutter plate linked with the angle lever slides in the left and right longitudinal directions.

[Problems to be solved by the invention] However, in the case of the above-mentioned fertilizer spreader, it is necessary to replace the worn out shutter plate after its useful life.
Alternatively, in order to replace a shutter plate that has been damaged due to an unexpected accident, disengage the connecting rod from the angle lever, and slide the shutter plate longitudinally while rotating the angle lever. The shutter plate must be removed from the hopper, and on the other hand, when installing a new shutter plate, the shaft on the underside of the shutter plate must be slid and the angle lever rotated at the same time. After engaging the U-shaped portion of the angle lever, the complicated work of aligning the relative positions of the angle lever and the connecting rod and connecting them is required.

In addition, in order to engage the angle lever and the shaft according to the above procedure, the shaft engaging part of the angle lever needs to be approximately U-shaped with one end open, and the strength of the U-shaped jaw is ensured. In order to do this, we had no choice but to use a larger angle lever.

The purpose of the present invention is to provide a new fertilizer spreader in which the removal and installation of the shutter plate can be performed easily, quickly, and smoothly in order to solve the problems of the conventional technology. .

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a hopper fixed to the machine frame and a shutter for opening and closing the fertilizer drop opening bored at the bottom of the hopper. In a fertilizer spreader equipped with a plate and an operating rod that slides the shutter plate in the longitudinal direction of the hopper via a lever, the arm portion of the lever connected to the shutter plate side is connected to the operating rod of the fertilizer spreader. With horizontal dependent rotation to the arm part connected to the side,
Further, the shutter plate and the lever are configured to be detachably connected to each other by a vertical pivot shaft so as to rotate vertically independently.

[Function] According to the above-mentioned configuration of the present invention, when removing the shutter plate, if the arm portion on the side where the lever is engaged is moved downward using the vertical movement pivot as the pivot, the arm can be removed. The portion separates from the engaging portion of the shutter plate. In this state, if the shutter plate is slid to the left or right, it can be removed from the bottom of the hopper.

Conversely, while the arm portion is moved downward, slide a new shutter plate onto the bottom of the hopper from either the left or right side, and then
The assembly of the new shutter plate is completed by rotating the arm portion upward and aligning and fixing the tip of the arm portion to the lower surface engaging portion of the shutter plate.

[Embodiment] Hereinafter, a preferred embodiment of the present invention will be described in detail based on the drawings.

Figure 1 is a side view of the fertilizer spreader of the present invention, Figure 2 is a side view of the fertilizer spreader of the present invention;
The figure is a plan view of the main parts of the fertilizer spreader.

As shown in the figure, the fertilizer spreader 1 of the present invention includes a hopper 3 fixed to a machine frame 2, a shutter plate 5 for opening and closing a fertilizer drop opening 4 bored at the bottom of the hopper 3, It is similar to the conventional one in that it is composed of an operating rod 7 that slides the shutter plate 5 in the longitudinal direction of the hopper 2 via an angle lever 6, but the angle lever 6
The structure of the structure and the structure of the engaging portion between the angle lever 6 and the shutter plate 5 are different from the conventional one.

Specifically, the angle lever 6 is configured such that the arm portion 8 connected to the shutter plate 5 side is vertically rotated with respect to the arm portion connected to the operating rod 7 side so that the arm portion 8 can rotate horizontally dependently and vertically independently. Rotation axis 10
and the shutter plate 5
It is configured to be detachable.

As shown in FIG. 2, this angle lever 6 has the base end side of the arm portion 9 pivoted on a shaft 12 that is provided upright on a protrusion 11 that is provided horizontally on the side surface of the machine frame 2. can be rotated freely.

The distal end side of this arm portion 9 is connected to the operating rod 7 via a connecting rod 13. 14,15
is the axis of these connections.

On the other hand, the arm portion 8 connected to the shutter plate 5 side has one side of its base end in contact with the base end surface of the arm portion 9 and is connected by the vertical movement pivot 10, and both arm portions 8 , 9 form approximately 90 degrees.

A long hole 8a is formed at the tip end of the arm portion 8, and a shaft 16 that projects vertically from the lower surface of the shutter plate 5 is fitted into the long hole 8a. A pin 17 is inserted into a portion that protrudes further downward from 8a, and is designed to lock this arm portion 8 to the shutter plate 5.

In this way, when the operating rod 7 is moved back and forth with the angle lever 6 locked to the shutter plate 5, the angle lever 6 is rotated horizontally using the shaft 12 as a fulcrum via the connecting rod 13. The fertilizer opening 4 at the bottom of the hopper is opened and closed by moving the shutter plate 5 in the left and right longitudinal directions of the hopper 3.

When horizontally rotating the angle lever 6,
The arm portion 8 on the shutter plate 5 side is dependent on the horizontal rotation of the arm portion 9 on the connecting rod 13 side.

Note that the shutter plate 5 has the above-mentioned drop opening 4.
The shutter plate 5 is guided by a support plate 19 and slides left and right.

When the drop opening 4 and the hole 18 match, the agitator 20, which rotates with the power of a tractor (not shown), uses its blades 21 to forcibly spread the fertilizer. 22 is the washer, 23 is the operating rod 7
It is the pivot of

Next, the operation of the embodiment configured as described above will be explained.

When spreading fertilizer, the shaft 16 on the lower surface of the shutter plate 5 is inserted into the elongated hole 8a at the tip of the arm portion 8, and the pin 17 is inserted into the hole at the protruding end of the shaft 16. 5 and arm portion 8 are engaged with each other, the operating rod 7 is moved back and forth.

At this time, as shown in FIG. 2, the other arm portion 9 rotates horizontally about the shaft 12 due to the linked operation of the operating rod 7 and the connecting rod 13, and is dependent on this arm portion 9. The arm portion 8 also rotates horizontally integrally.

Therefore, the shutter plate 5 slides along the left and right longitudinal directions of the hopper 3, and depending on the degree of the sliding stroke, the opening degree of the drop opening 4 is adjusted as appropriate, and the fertilizer in the hopper 3 is moved by the agitator 20 to It is forcibly discharged from the drop port 4 and the spraying work is performed.

When replacing the shutter plate When removing the shutter plate 5 set at the bottom of the hopper 3, attach the shaft 1 to the underside of the shutter plate 5, as shown in solid line in Figure 1.
By pulling out the pin 17 from the protruding end side of the shaft 16, the distal end of the arm portion 8 that is engaged with the shaft 16 is released, and the arm portion 8 is rotated in half with the vertical movement pivot 10 as the pivot. Rotate it clockwise to open it as shown by the two-dot chain line in Figure 1.

Under such an open state of the arm portion 8,
The shutter plate 5 is moved in either the left or right longitudinal direction and pulled out from the bottom of the hopper 3.

Next, in order to assemble a new shutter plate 5 to the bottom of the hopper 3, the shutter plate 5 must be
The longitudinal edge of the hopper 3 is attached to the support plate 1 at the bottom of the hopper 3.
9 and push it in until the shaft 16 on the lower surface of the shutter plate 5 is positioned within the vertical movement locus of the arm portion 8.

Next, the arm portion 8 located at the position indicated by the two-dot chain line in FIG.
2 and the pin 17.

[Effects of the invention] As described above, in the present invention, the arm portion connected to the shutter plate side of the angle lever is horizontally subordinate to the arm portion connected to the operating rod side thereof, and The shutter plate and the lever are connected by a vertical pivot for independent vertical rotation, and are configured to be detachable, so the shutter plate can be moved without disengaging the lever from the connecting rod on the operating rod side. can be removed and installed, and these operations can be performed easily, quickly, and smoothly. Furthermore, the shape of the portion of the lever that engages with the shutter plate can be made smaller.

[Brief explanation of the drawing]

FIG. 1 is a side view of the fertilizer spreader of the present invention, and FIG. 2 is a sectional view taken along the line shown in FIG. 1. In the figure, 1 is a fertilizer spreader, 2 is a machine frame, 3 is a hopper, 4 is a drop port, 5 is a shutter plate, 6 is a lever, 7 is an operating rod, 8 and 9 are arm parts, and 10 is a vertical movement It is the axis.

Claims (1)

[Scope of utility model registration request] A hopper fixed to the machine frame, a shutter plate for opening and closing the fertilizer drop opening drilled in the bottom of the hopper, and an operation for sliding the shutter plate in the longitudinal direction of the hopper via a lever. In a fertilizer spreader equipped with a rod, the arm portion connected to the shutter plate side of the lever is horizontally subordinate to the arm portion connected to the operating rod side, and rotates vertically independently. A fertilizer spreader characterized in that the shutter plate and the lever are connected by a vertically moving pivot and configured to be detachable.