JPH06205608A - Fruit-dropping machine - Google Patents

Abstract

PURPOSE:To provide a fruit-dropping machine capable of transmitting a necessary vibration to branches of a tree while reducing a load applied to the branches of the tree. CONSTITUTION:This fruit-dropping machine 1 is equipped with a long rod-shaped frame 2, a motor 3 and a shaking head 4. A rotational motion of the motor 3 is converted to a reciprocating motion by a reciprocation conversion mechanism 12 and it is converted to a shaking motion by a shaking conversion mechanism 20. This shaking motion is transmitted to a shaking head and a shaking force is thereby applied to branches (W) of a tree. The motor 3 and the reciprocation conversion mechanism 12 are set in the neighborhood of one end part of the rod-shaped frame 2. On the other hand, the shaking head 4 is set on the other end side of the rod-shaped frame 2. The reciprocation conversion mechanism 12 is connected through an intermediate member to the shaking conversion mechanism 20.

Description

Detailed Description of the Invention

[0001]

[Object of the Invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tree nut dropping machine for vibrating a tree branch of a tree to drop a fruit on the tree branch to the ground.

[0002]

BACKGROUND OF THE INVENTION In the past, when harvesting fruits that have grown on tall trees, attempts have been made to drop the fruits on the ground by vibrating tree branches. This is often used, for example, in the harvest of plum fruits, and when performing this type of work, as shown in FIG. 5, a long rod-shaped frame 2'provided with a prime mover 3'on one end is used. Equipment for dropping plums is used, which has a hook-shaped locking member at the other end.

However, in such equipment, since a mechanism for reciprocating the locking member is employed, a large force in the shearing direction acts on the tree branch W, and the tree branch W may be broken in some cases. There was even that. In addition, when setting the shape of the locking member, it is necessary to consider that it will not easily come off the tree branch W during vibration.

[0004]

[Technical Items Attempted to Develop] The present invention has been made from such a background, and is a novel tree dropping machine capable of dropping tree nuts reasonably and surely by changing the vibration direction transmitted to the tree branches. Is an attempt to develop.

[0005]

[Constitution of the invention]

[Means for Achieving the Object] That is, a tree dropping machine according to the first invention of the present application comprises a prime mover and a swing head for a long rod-shaped frame, and a rotary motion of the prime mover is converted into a reciprocating motion converting mechanism. In the device for converting the reciprocating motion by means of the oscillating motion into the oscillating motion by the oscillating converting mechanism and transmitting this to the oscillating head to vibrate the tree branch, the prime mover and the reciprocating motion converting mechanism are Provided near one end of the rod-shaped frame, on the other hand, the swing head is provided at the other end of the rod-shaped frame, and the reciprocating motion converting mechanism and the swing converting mechanism are connected by a relay member. It is characterized by.

In addition to the above requirements, the swinging head according to the second invention, which is the second invention of the present application, swings the swinging head around a swinging axis provided in a direction orthogonal to the extending direction of the rod-shaped frame. It is characterized in that it is positioned so as to move dynamically.

Furthermore, in addition to the above requirements, the third embodiment of the present invention, a tree nut dropping machine, is characterized in that the swinging head comprises a sandwiching piece which is provided so as to be expanded at a predetermined angle in advance. It is a thing. The above objects are intended to be achieved by these inventions.

[0008]

According to the first aspect of the present invention, the rocking head is used as a member that directly acts on the tree branch and vibrates the tree branch. Therefore, the tree branch under the action of the swing head moves on the arc-shaped rotation locus surface of the swing head.

Further, according to the second invention of the present application, the pivot shaft of the swing head is provided in a direction orthogonal to the extending direction of the rod-shaped frame. Therefore, the tree branch locked on the swing head vibrates mainly in the vertical direction as the swing head swings.

Further, in the third invention according to the present application, the swinging head is provided with a sandwiching piece which is expanded in advance at a constant angle. Therefore, it can be used without depending on the size of the tree branches to be sandwiched, and the tree branches have a uniform amplitude.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A tree dropping machine according to the present invention will be specifically described below with reference to the drawings. The tree seed removing machine of the present invention is shown by reference numeral 1 in the figure, and is used for harvesting fruits having relatively hard flesh such as plums, chestnuts and coffee beans. In the following explanation, the fruit A is picked as an example,
The structure of the tree dropper 1 of the present invention and its operating state will be described in this order.

The tree seed dropping machine 1 of the present invention comprises a long rod-shaped frame 2 having a prime mover 3 near one end thereof and a swing head 4 at the other end thereof. The rod-shaped frame 2 is, for example, a square pipe made of aluminum, which is cut into a length that can reach all the tree branches W. A clutch box 5 and a drive casing 6 are provided below the prime mover 3 provided near one end of the rod-shaped frame 2. The clutch box 5 is provided with a centrifugal clutch 9, which is provided on the output shaft 8 of the prime mover 3 as shown in FIG. 4, and is provided so as to surround the shoe 10. And a clutch drum 11 which is a driven member rotatably supported by the.

Further, the drive casing 6 has a reciprocating motion converting mechanism 12. That is, two circular eccentric plates 14 are eccentrically provided on the eccentric shaft 13 provided on the clutch drum 11 so as to generate a phase difference of 180 ° with each other. A connecting plate 16 that forms the Reciprocating sliding plates 17 as relay members are rotatably connected to the connecting plates 16, respectively. The reciprocating sliding plate 17 is, for example, a strip-shaped steel plate made of a material having durability against repeated bending motions, and this plate passes through the rod-shaped frame 2 and the swing conversion mechanism 2 described later.
It is connected to 0.

Next, the swing head provided at the other end of the rod-shaped frame 2 (hereinafter, the side on which the prime mover 3 is provided is described as the base end side, and the side on which the swing head 4 is provided is described as the working end side). 4 and the swing conversion mechanism 20 which is a drive transmission mechanism of the swing head 4 will be described. Swing conversion mechanism 20
Is a reciprocating motion converting mechanism 12 which converts the rotary motion of the prime mover 3 into a reciprocating motion and further converts into a swing motion.
This serves to transmit this to the swing head 4.

As its structure, the support arm 21 extending from the tip of the rod-shaped frame 2 and the reciprocating sliding plate 17 are provided.
A connecting projection 22 which is connected to the tip of the support arm 21 and is formed so as to project to opposite sides of the support arm 21.
The joint overhanging portion 22 is provided with an action arm 23 whose one end is rotatably supported on the end side. Further, a swing head 4 that directly acts on the tree branch W and vibrates the tree branch W is connected to the swing conversion mechanism 20.

The oscillating head 4 comprises an oscillating plate 25 and a sandwiching piece 26, of which the oscillating plate 25 is rotatably supported by a rotary shaft 27 with respect to the support arm 21. The other end of the working arm 23 is rotatably supported on the left and right sides of the rotary shaft 27 with the rotary shaft 27 interposed therebetween. Further, a sandwiching piece 26 is integrally formed with the oscillating plate 25 at either one of the left and right ends of the oscillating plate 25. In the present embodiment shown in FIG. The flat plate-shaped member forming the
Is provided.

The sandwiching piece 26 is shaped so as to widen laterally in a V-shape so as to always maintain a constant engagement state without depending on the thickness of the tree branch W. The expansion angle in this case is set so that the sandwiching piece 26 does not easily come off from the tree branch W during the work, and it can be engaged with all the tree branches W of the applied tree. Set to. Further, such a holding piece 26 is covered with a protective cap 28 made of rubber, for example. Incidentally, the protective cap 28 prevents the tree branch W from being damaged when the holding piece 26 is engaged with the tree branch W.

The above is the basic configuration of the tree seed dropping machine 1 of the present invention. The tree seed dropping machine 1 of the present invention is further provided with the following members. That is, the drive casing 6 provided in the lower portion of the prime mover 3 is provided with the handle 30, and the handle 30 is further provided with the operation lever 31. Although not shown in the figure, a shoulder belt is provided to reduce the burden on the operator.
The tree dropper 1 may be supported by the handle 30 and the rod-shaped frame 2 and the shoulder belt at three points. Further, in this embodiment, the handle 30 is provided in a fixed state with respect to the drive casing 6, but a serration or the like may be provided separately to change the mounting angle of the handle 30.

Next, such a tree seed removing machine 1 of the present invention
The manner of harvesting the plum fruit A using the above will be described together with the operating state of the tree nut dropping machine 1 of the present invention. First, the operator starts the prime mover 3, and holds the handle 30 and the base side of the rod-shaped frame 2 by hand to take a working posture. Then, the holding piece 26 located on the tip end side of the rod-shaped frame 2 is engaged with the tree branch W to operate the operation lever 31, so that the rotation of the prime mover 3 is transmitted to various members in the subsequent stage.

That is, the rotation speed of the prime mover 3 is raised above a certain level by an appropriate throttle control, and the shoe 10
Are spread outward by the centrifugal force and are pressed against the clutch drum 11, so that the drive is transmitted to the eccentric shaft 13. As a result, the two eccentric plates 14 rotate eccentrically with a phase difference of 180 °, and the drive is transmitted to the connecting plate 16 so that the reciprocating sliding plates 17 reciprocate so as to pass each other.

Then, the connecting overhanging portion 22 connected to each reciprocating sliding plate 17 reciprocates together with the reciprocating sliding plate 17 so as to pass each other, and is further connected to the connecting overhanging portion 22. Arm 23 is connected to overhanging portion 22
It operates so as to alternately push or pull in the sliding direction of. Then, the swing plate 25 of the swing head 4
Is actuated by the action arm 23 to swing about the turning shaft 27 in the range of a constant angle.
As a result, the tree branch W held by the holding piece 26 is vibrated.

The plum fruit A attached to the tree branch W falls to the ground as the tree branch W vibrates. In this way, the harvesting of the plum fruit A is completed by repeating the above operation procedure for all the tree branches W and further for all the plum trees. Then, the operator operates the operation lever 31 to stop the rocking motion of the rocking head 4 and further stop the driving of the prime mover 3, thereby completing a series of work.

[0023]

INDUSTRIAL APPLICABILITY As described above, the tree nut removing machine 1 of the present invention
Is configured, and by having such a configuration, the following effects are exhibited. That is, in the present invention, the swinging head 4 is provided at the working end of the rod-shaped frame 2 so that the tree branch W is vibrated.
Therefore, the tree branch W vibrates on the arcuate rotation locus surface having a constant radius with the rotation shaft 27 as the rotation center. This makes the tree branch W
Oscillates with the portion sandwiched by the sandwiching pieces 26 as a base point, and almost no load is applied to the root portion of the tree branch W. Further, since the swing head 4 is configured to swing about the swing shaft 27 as a swing center, the base point hardly moves. Therefore, no shearing force is generated at all in the case of a conventional tree dropping machine as shown in FIG.

Further, if the rotating shaft 27 of the swinging head 4 is provided in the direction orthogonal to the extending direction of the rod-shaped frame 2, the sandwiching piece 26 can be easily engaged with the tree branch W described laterally. Further, when the holding piece 26 is formed into a V-shaped laterally expanded shape as shown in FIG. 2, it can be easily attached to and detached from the tree branch W and has a different thickness. It can always be applied to the tree branch W.

[Brief description of drawings]

FIG. 1 is a perspective view showing a usage state of a tree dropping machine according to the present invention.

FIG. 2 is an enlarged perspective view of a base end portion and a working end side of the tree fruit dropping machine of the present invention.

FIG. 3 is a side view showing an operating state of the swing conversion mechanism.

FIG. 4 is a vertical sectional side view showing internal mechanisms of a clutch box and a drive casing.

FIG. 5 is a perspective view showing a conventional tree dropping machine.

[Explanation of reference numerals] 1 tree drop machine 2 rod-shaped frame 3 prime mover 4 rocking head 5 clutch box 6 drive casing 8 output shaft 9 centrifugal clutch 10 shoe 11 clutch drum 12 reciprocating motion conversion mechanism 13 eccentric shaft 14 eccentric plate 15 response part 16 Connecting Plate 17 Reciprocating Sliding Plate 17 20 Swing Conversion Mechanism 21 Support Arm 22 Overhanging Part for Joining 23 Working Arm 25 Swing Plate 26 Clamping Piece 27 Rotating Shaft 28 Protective Cap 30 Handle 31 Operation Lever A Plum Fruit W Tree branch

Claims (3)

[Claims] 1. A long rod-shaped frame comprising a prime mover and a swinging head, wherein the rotary motion of the prime mover is converted into a reciprocating motion by a reciprocating motion converting mechanism, and the rocking motion is further oscillated by the rocking converting mechanism. In a device that applies vibration to a tree branch by converting it into motion and transmitting this to a rocking head, the prime mover and the reciprocating motion conversion mechanism are provided near one end of the rod-shaped frame, and the other of the rocking motion is provided. The moving head is provided on the other end side of the rod-shaped frame, and the reciprocating motion converting mechanism and the swing converting mechanism are connected by a relay member. 2. The swing head is positioned so as to swing around a swing shaft provided in a direction orthogonal to the extension direction of the rod-shaped frame as a swing center. Tree seed remover. 3. The tree dropping machine according to claim 1, wherein the swing head is provided with a sandwiching piece which is provided by expanding in advance at a predetermined angle.