JPH0244686Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a bending machine for plants that bends trunks, branches, etc. of plants that have high bending stress.

(Prior Art) As a conventional technique, for example, a part of a branch is fixed to the ground with a wire, and the part of the branch to be bent is pressed by a jack set on the ground.

(Problems to be solved by the invention) In the conventional method described above, when a bending load is applied to the branch by jacking, a part of the reaction force is applied to the trunk of the plant, which causes the plant to be damaged immediately after being transplanted or when it has taken root. Weak plants had drawbacks that made them unusable.

In addition, the lower end of the wire must be firmly attached to the ground, which has the disadvantage of requiring labor and time.

The object of the present invention is to obtain a bending machine for garden plants that eliminates the above-mentioned drawbacks.

(Means for solving the problems) In order to achieve the above object, the present invention is constructed as follows.

In other words, a pair of operating legs are swingably connected to a fulcrum shaft, an expansion mechanism is provided to spread and hold each operating leg at a predetermined angle, and a support is provided at the swinging end of each operating leg approximately parallel to the fulcrum shaft. one end of the telescoping mechanism is swingably connected to the fulcrum shaft, a clamping leg is swingably connected to the other end of the telescoping mechanism, and a longitudinal end of the clamping leg is connected to the swinging end of the clamping leg. A pair of clamping bars are provided at a predetermined distance in the direction and approximately parallel to the fulcrum axis.

(Function) Since the present invention has the above structure, the lower part of the trunk of the plant is held between the holding bars of the holding legs,
When the telescopic mechanism is shortened with the upper working leg's abutment on the outer surface of the upper part of the tree's trunk and the lower's working leg's abutment on the inner surface of the middle part of the trunk, the clamping leg will The pair of working legs swings in the direction of the pair of working legs about the holding bar as a fulcrum, and the working legs of the pair of working legs swings in the direction of the holding legs about the abutment of the lower working leg.

As a result, the trunk of the plant was pressed outward at the point where it touched the stopper of the lower working leg, and the place where it came into contact with the stopper of the upper working leg and the clamping bar of the clamping leg. The area will be pressed inward.

In addition, the lower part of the trunk of the plant is held between the gripping bars of the gripping legs, and the support of the upper working leg is placed on the inner surface of the upper part of the trunk of the plant, and the support of the lower working leg is placed on the outer surface of the middle part of the trunk. When the extension mechanism is extended while in contact with each other, the clamping legs move in the opposite direction to the pair of working legs using the clamping bar as a fulcrum, and the pair of working legs move around the abutment of the lower working leg. They will each swing in the opposite direction to the clamping legs.

As a result, the trunk of the plant was pressed inward at the point where it touched the stopper of the lower working leg, and the place where it came into contact with the stopper of the upper working leg and the clamping bar of the clamping leg. The points will be pressed outward.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In the drawings, Figure 1 is a cross-sectional side view of the main part showing how it is used when bending the tree trunk outward, Figure 2 is its front view, and Figure 3 is how it is used when bending the tree trunk inward. FIG. 3 is a cross-sectional side view of main parts showing the state.

1 and 2, 1 is a fulcrum shaft, and this fulcrum shaft includes an upper working leg 2 and a lower working leg 4.
and the telescopic mechanism 7 is swingably mounted.

That is, the upper working leg 2 and the lower working leg 4 have a pair of upper arms 2a, 2a and a pair of lower arms 4a, 4a rotatably connected to both ends of the fulcrum shaft 1 at one end, and the other end. Both extend to one side (to the right in Figure 1).

The upper arms 2a, 2a are connected to each other with bolts, with an upper supporter 3 mounted on the swinging ends of the upper arms 2a, 2a, and a lower supporter 5 mounted on the swinging ends of the lower arms 4a, 4a with bolts. The expansion mechanism 6 is placed between 3 and 5 and the two are connected by bolting.

Each of the above-mentioned abutting tools 3 and 5 is made of a bar curved into an arc shape and arranged approximately parallel to the fulcrum shaft 1, and both ends thereof are connected to the above-mentioned upper arms 2a and 2a and lower arm 4.
Connected to the swinging ends of a and 4a.

In addition, as shown in FIG. 1, the expansion mechanism 6 has an intermediate portion curved in one direction of the fulcrum axis, and both ends thereof as shown in FIG.
Connect to both ends of 5.

The above-mentioned telescopic mechanism 7 is constructed by providing a threaded pipe 7a with a right-handed thread and a left-hand thread extending from both ends toward the center on the inner periphery, and threaded rods 7b and 7c are screwed to both ends of this threaded pipe 7a. As shown in FIG. 2, the upper end of the upper threaded rod 7b is rotatably connected to the longitudinally intermediate portion of the fulcrum shaft 1, and the lower end of the lower threaded rod 7c is connected to a clamping leg 8, which will be described later. Rotatably connected.

The clamping leg 8 has a pair of arms 8b, 8b rotatably connected to both ends of a connecting shaft 8a arranged parallel to the fulcrum shaft 1, and the swinging end of the arm 8b is connected to one side (right side in FIG. 1). ).

A pair of clamping bars 9, 9a are arranged at the swinging ends of each of the arms 8b, 8b at a predetermined interval in the longitudinal direction and approximately parallel to the fulcrum shaft 1.
9b and connect with bolts.

The lower clamping bar 9b of the clamping bars 9a and 9b is slidably fitted at both ends into longitudinal holes formed in the arms 8b and 8b, and is bolted together. , the distance between the upper clamping bar 9a and the upper clamping bar 9a can be adjusted.

As shown in FIG. 1, a plurality of adjustment holes 10a, 10b, 10c are provided at the swing end of each of the working legs 2, 4 and at the end of the clamping leg 8 on the side opposite to the clamping bar 9. By forming the pads at a predetermined pitch in the longitudinal direction, selecting these and connecting each pad 3, 5, the expansion mechanism 6, and the connecting shaft 8a with bolts, the right and left sides of each pad 3, 5 in FIG. The position in the direction, the expansion angle of each working leg 2, 4, and the position of the connecting shaft 8a in the left and right direction in FIG. 1 are adjusted as appropriate.

Next, the manner of use of the above embodiment will be explained.

First, the process of bending the tree trunk 11 into a convex shape will be described.

As shown in FIG. 1, the lower abutment tool 5 is brought into contact with the left surface (inner surface) of the bending center part A of the trunk 11, and the upper abutment tool 3 is brought into contact with the trunk 1 located above the bending center part A.
1, and the holding bars 9a, 9b are brought into contact with the right and left surfaces of the lower part A of the trunk 11 located below the bending center part A.

In this state, the telescopic mechanism 7 is operated for shortening. That is, a spanner is engaged with the middle portion of the threaded pipe 7a, the threaded pipe 7a is rotated in the tightening direction, and the threaded rods 7b and 7c are moved in the direction toward each other.

Then, the fulcrum shaft 1 and the connecting shaft 8a move toward each other, and the working legs 2, 4 and the expansion mechanism 6 rotate downward in FIG. 1 around the lower abutment 5, and , the clamping legs 8 are clamping bars 9a, 9
It will rotate upward in FIG. 1 about b.

As a result, the trunk 11 is bent into a convex shape with the bending center A being pushed to the right in FIG. 1 and the upper part A and the lower part C being pushed to the left in FIG.

Next, when bending the trunk 11 into a concave shape, the second
As shown in the figure, the lower abutment tool 5 is brought into contact with the right surface (outer surface) of the bending center part A of the trunk 11, and the upper abutment tool 3
are brought into contact with the left side (inner surface) of the upper part A of the trunk 11 located above the bending center A, and the holding bars 9a and 9b are brought into contact with the lower part A of the trunk 11 located below the bending center A. Place it in contact with the left and right sides.

In this state, the telescopic mechanism 7 is operated to extend.

In other words, the threaded pipe 7a is rotated in the opposite direction to that described above.

Then, the fulcrum shaft 1 and the connecting shaft 8a move away from each other, and the working legs 2, 4 and the expansion mechanism 6 rotate upward in FIG. 1 around the lower abutment 5, and , the clamping legs 8 are clamping bars 9a, 9
It will rotate downward in FIG. 1 about b.

As a result, the trunk 11 is bent into a concave shape with the bending center part A pressed to the left in FIG. 1 and the upper part A and the lower part C pressed to the right in FIG.

Note that when bending force is applied to the trunk 11,
The clamping bars 9a, 9b clamp the lower part of the trunk 11 while applying a bending moment in the above-mentioned curving direction. The bending force of the trunk 11 is maintained over a long period of time.

Further, the period during which the bending force is applied is set to be a period during which self-maintenance of the trunk 11 occurs, for example, 2 to 3 years.

(Effects of the invention) As is clear from the above explanation, the present invention utilizes the reaction force of the plant itself to bend part of its trunk or branches, so it can be used to bend a part of the trunk or branch of the plant immediately after transplanting or a plant with weak roots. Even if there is a problem, it can be easily bent in a predetermined direction, and the bending work can be done easily and quickly.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional side view of the main part showing how it is used when bending the trunk of a plant outward; Figure 2 is its front view;
FIG. 3 is a cross-sectional side view of the main part showing the state of use when bending the trunk of a plant inward. 1: Fulcrum shaft, 2: Upper working leg, 2a: Arm,
3: Upper supporter, 4: Lower action leg, 4a: Arm, 5: Lower supporter, 6: Expansion mechanism, 7: Extension mechanism, 7a: Threaded pipe, 7b, 7c: Threaded rod,
8: Clamping leg, hot spring axis, 8b: Arm,
9: Holding bar, 10: Adjustment hole, 11: Tree trunk.

Claims (1)

[Scope of utility model registration request] A pair of operating legs are swingably connected to a fulcrum shaft, an expansion mechanism is provided to expand and hold each operating leg at a predetermined angle, and a stopper is provided at the swinging end of each operating leg approximately parallel to the fulcrum shaft. one end of the telescoping device is swingably connected to the fulcrum shaft, a clamping leg is swingably connected to the other end of the telescoping mechanism, and the swinging end of the clamping leg is provided with a A bending machine for garden plants, characterized in that a pair of clamping bars are provided at a predetermined interval and are substantially parallel to a fulcrum axis.