JP2857863B2 - Elevator used for trees - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator mainly used for pruning and pruning trees.

[0002]

BACKGROUND OF THE INVENTION Large trees cannot be pruned and pruned at high points from the ground. Tripod ladders are used for pruning tall trees. However, this ladder cannot stably stand alone unless its base is widened in proportion to its height. For this reason, there is a drawback that if there is a tree trunk or a branch in the surroundings, it cannot be installed at a place where it is in the way. In addition, since it becomes unstable when it becomes high, for example, pruning of a high portion of 3 meters or more has a disadvantage that it cannot be used safely. For this reason, tall trees require scaffolding around them to be pruned. This method has a disadvantage in that extra work is required for assembling the scaffold, and the tree cannot be pruned efficiently.

[0003] By the way, tree climbing machines and the like have been developed, but this type of apparatus cannot be used for pruning trees. This is because the tree climber climbs the tree trunk and cannot reach the pruning branches. Pruning tall trees requires climbing away from the tree trunk. A device shown in FIG. 1 has been developed as a device for climbing a part away from a tree.
In the apparatus shown in the figure, a telescopic leg 2 in which pantographs are connected in series is provided on a traveling platform 1, and a work table 3 is provided on the telescopic leg 2. The work table 3 is connected to the trunk of the tree so that the whole does not fall down.

[0004]

The device shown in FIG. 1 can be used for pruning trees, but not for pruning.
This is because the branches are in the way when the work table 3 is raised. The work table 3 cannot be lifted apart from the tree. This is because they fall down unstable and become dangerous. For this reason, there is a disadvantage that the work table cannot be lifted above the branches and cannot be used for pruning the upper branches of the tree.

Further, the apparatus shown in FIG. 1 has a disadvantage that the whole structure is complicated, it is difficult to reduce the weight, and it cannot be used easily. There is also a disadvantage that the manufacturing cost is increased due to the complicated structure.

[0006] The present invention has been developed for the purpose of further solving this drawback. An important object of the present invention is to provide a tree that is simple in structure and can be reduced in weight, that can be stably arranged around a tree without being obstructed from moving even if there are branches, even if there are branches. It is to provide an elevator for use.

[0007]

The elevator used for trees according to the present invention is provided with the following configuration in order to achieve the above object. The elevator used for the tree has a column 4 that stands vertically adjacent to the tree K, a connecting rod 5 that connects the middle of the column 4 to the tree K, and an upper end that is connected to the middle of the column 4.
Inclined rod 6 that supports column 4 by sticking the ground at the lower end
And a worktable 3 connected to the support 4 so as to be able to move up and down,
A winch 8 is provided to wind the wire 7 attached to the work table 3 and connected to the upper end of the column 4 to raise the work table 3 along the column 4. The elevator is a worktable 3
Wind the wire 7 with the winch 8 on the
Is raised along the support 4.

When moving the elevator around the tree K, the work table 3 is lowered. This is because if the work table 3 is located above the column 4, the center of gravity becomes high, and the column 4 cannot be easily set up vertically. Further, when moving the elevator around the tree K and the branches are in the way, the connecting rod 5 is separated from the tree K. When the branches are not in the way, the connecting rod 5 is connected to the tree K so as to be rotatable and moved. The column 4 to be moved around the tree K is set up vertically by moving it to a predetermined position or by moving it down to a predetermined position. The vertical support 4 is supported by the connecting rod 5 and the inclined rod 6 so as not to fall.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below exemplify an elevator used for a tree for embodying the technical idea of the present invention, and the present invention does not specify the tree elevator as follows.

Further, in this specification, in order to make it easier to understand the claims, the numbers corresponding to the members shown in the embodiments will be referred to as “claims” and “ In the column of “means”. However, the members described in the claims are not limited to the members of the embodiments.

An elevator used for a tree shown in the side view of FIG. 2 and the horizontal sectional view of FIG. 3 includes a column 4 which stands vertically adjacent to the tree, and a connecting rod which connects the middle of the column 4 to the tree. 5, an upper end connected to the middle of the support 4, an inclined rod 6 supporting the support 4 by extending the ground at the lower end, a worktable 3 connected to the support 4 so as to be able to move up and down, and the worktable 3.
And a winch 8 that winds up the wire 7 attached to the upper end of the column 4 and that raises the work table 3 along the column 4.

The column 4 shown in FIG. 3 is a square pipe made of metal and has a projection 9 projecting from the lower end thereof so as not to slip. The protrusion 9 is provided by fixing the plate 10 to the lower end of the column 4 and bending the corner of the plate 10 downward. The total length of the column 4 is, for example, 3 to 8 meters, preferably 4 to 8 meters, and more preferably 5 to 7 meters. If the support | pillar 4 is made high, it can be used for the pruning of a high tree, but the whole weight will become heavy. The overall length of the support 4 is determined to be an optimum length in consideration of the overall weight and the height of the tree to be used. As shown in the cross-sectional view of FIG. 4, the column 4 can be provided with ribs 11 to increase the bending strength. The strut 4 having the rib 11 is characterized in that it can be thin and light, and can reduce deflection.

The connecting rod 5 has a tip connected to a tree so that the column 4 does not fall. The connecting rod 5 is a worktable 3
Limit the descent position of. The work table 3 cannot move below the connecting rod 5. For this reason, the connecting rod 5
It is arranged below the worktable 3 that has descended to the lowest. Prop 4
In order to stably support the connecting rod 5, it is preferable that the connecting rod 5 is connected above the column 4. However, in order to lower the work table 3 so that the operator can easily get on and off, it is preferable that the connecting rod 5 is connected below the support 4. Therefore, the position at which the connecting rod 5 is connected to the column 4 is
Is connected to a tree, and is connected to a position where the user can get on and off the workbench 3, for example, a position about 1 meter from the lower end of the column 4. The workbench may be a low table or a tripod ladder to allow the operator to get on and off. Elevators used in this way can raise the working table's lowest position higher than one meter. For this reason, the connecting rod can be connected to a position higher than the lower end of the column by, for example, about 2 meters.

The connecting rod 5 has its tip fastened to the tree K. FIG. 5 shows a state where the tip of the connecting rod 5 is connected to the tree K. The connecting rod 5 in this figure has, at its tip, a fixing plate 12 that is in contact with the tree K. The contact plate 12 is a V-shaped metal plate extending vertically and connected to the tree K at a predetermined length. The vertically extending contact plate 12 is connected to the connecting rod 5.
The support 4 can be connected so as not to fall down on the tree via.
For this reason, the inclined rod 6 should support the support column 4 so as not to fall down. However, it goes without saying that the elevator according to the present invention can support both the connecting rod 5 and the inclined rod 6 so that the column is not tilted.

As shown in FIG. 5, the contact plate 12 is fastened to a tree via a wire 13. A ring 14 connecting the wires 13 is fixed to the plate 12. Ring 1
4, the wire 13 is connected, and the wire 13 is tightened with the tightening device 15 to connect the connecting rod 5 to the tree K. With this structure, the connecting rod 5 can be easily connected to the tree K using commercially available fasteners. However, the elevator of the present invention does not specify the structure for connecting the connecting rod to the tree to the structure shown in FIG.

The connecting rod 5 shown in FIG.
And the tip is connected to the tree. As shown in FIG. 6, the connecting rod 5 may have a structure in which the entire length can be adjusted. The connecting rod 5 in this figure can connect the support 4 to the tree K by adjusting the distance between the support 4 and the tree K.
The connecting rod 5 includes two connecting pipes 5A fixed to the column 4 and a telescopic pipe 5B inserted into the connecting pipe 5A.

The connecting pipes 5A are located on both sides of the column 4, and are fixed horizontally and parallel to each other. Connecting pipe 5A
, The support 4 is sandwiched by a sandwiching plate 5C that sandwiches the support 4.
Fixed to The sandwiching plate 5C is fastened with screws on both sides, and sandwiched and fixed to the column 4. Connecting pipe 5A
Is fixed by welding to this clamping plate 5C,
The holding plate 5C is connected to the support 4 and is fixed to the support 4. The clamping plate 5C can be moved up and down along the column 4 by loosening the screws.

The telescopic pipe 5B is inserted and connected to the connecting pipe 5A. In order to connect the telescopic pipe 5B to the connecting pipe 5A, through holes 16 are opened vertically in the telescopic pipe 5B and the connecting pipe 5A. The telescopic pipe 5B is provided with through holes 16 at regular intervals. A stop pin (not shown) is inserted into the through hole 16 of the connecting pipe 5A and the telescopic pipe 5B, and the telescopic pipe 5B is connected to the connecting pipe 5A. The stopper pin has a collar at the upper end for retaining. The stop pin can easily connect the telescopic pipe 5B and the connecting pipe 5A. However, the telescopic pipe 5B and the connecting pipe 5A can be connected by a set screw. The set screw is screwed into a screw hole radially penetrated into the connecting pipe 5A, and
Is stopped at a predetermined position.

The connecting pipe 5A of this structure has a length varying by inserting the telescopic pipe 5B into the connecting pipe 5A.
And the distance between the tree K can be adjusted. Therefore, the column 4 can be connected to the tree K with the interval between the column 4 and the tree K being the optimum interval for the work. After the telescopic pipe 5B is inserted into the connecting pipe 5A to adjust the total length, the connecting pipe 5A and the telescopic pipe 5B are adjusted.
A telescopic pipe 5B is connected to the connecting pipe 5A by inserting a set pin into the connecting pipe or by screwing a set screw into the connecting pipe 5A. Furthermore, since the connecting pipe 5A in this figure clamps the support column 4 with the clamping plate 5C, there is also a feature that the support column 4 can be prevented from falling down.

Two inclined rods 6 are connected to the opposite side of the connecting pipe 5A, that is, to the back surface of the column 4. FIG. 7 is an enlarged side view of a portion connecting the inclined rod 6 to the column 4. The inclined rod 6 shown in this figure is connected to the column 4 via a ball joint connector 17. Ball joint connector 17
Consists of a horizontal spherical shaft 17A connected to the support 4 and a spherical bearing 17B connected to the tip of the inclined rod 6. The horizontal spherical axis 17 </ b> A is fixed to a connection plate 18 welded to the back surface of the support column 4 so as not to hinder the passage of the work table 3 along the support column 4. The spherical bearing 17B is fixed to the tip of the inclined rod 6. The tilt rod 6
When moving the support 4, as shown in FIG.
And fold in parallel. When the support 4 is set up vertically away from the tree K, the rear end of the inclined rod 6 is inclined away from the support 4 as shown in FIG.

The inclined rod 6 shown in FIG. 2 has a structure in which the lower part can be expanded and contracted so that the lower end does not protrude from the column 4 when folded in parallel with the column 4. Inclined rod 6
Has a telescopic leg 6A connected to the lower end. The telescopic legs 6A are
This is a pipe into which the lower end of the inclined rod 6 can be inserted. The telescopic leg 6A can be connected to the lower end of the inclined rod 6 via a lock pin or a set screw, similarly to the telescopic pipe 5B and the connecting pipe 5A shown in FIG. Further, a protrusion 9 is projected from the lower end of the telescopic leg 6A so as not to slip on the ground. The protrusion 9 has the same structure as the column 4 and protrudes.

The work table 3 travels while holding the support 4 therebetween.
It has a set of wheels 19. One of the two sets of wheels 19 is mounted on the upper part of the worktable 3, and the other is mounted on the lower part of the worktable 3.
One set of wheels 19 rolls with the support 4 interposed therebetween. Wheel 19
Has a V-groove perpendicular to the rolling surface on the outer periphery. This wheel 19
As shown in FIG. 3, the column 4 rotates while holding the column 4 of the square pipe from both sides. The wheels 19 having this structure prevent the work table 3 from rotating in a horizontal plane, and move the work table 3 up and down along the column 4.

The work table 3 has a handrail 3B disposed above a horizontal table 3A on which an operator rides. The horizontal base 3A has a shape in which a plurality of rods are connected in parallel at a fixed pitch so as not to be stepped off. The handrail 3B has a shape in which a part of the part facing the tree K is removed so that the body can easily protrude in the direction of the tree K. The horizontal base 3A and the handrail 3B are connected by a vertical rod 3C.

The horizontal base 3A and the handrail 3B have the arm 20 protruding in the direction of the support 4 and the angle 21 is vertically fixed to the tip of the arm 20 by welding, and the wheel 19 is mounted on the angle 21. .

The winch 8 is fixed on an arm 20 connected to the handrail 3B. The winch 8 winds up the wire 7 connected to the upper end of the column 4 and raises the worktable 3. The winch 8 shown in FIG. 2 and FIG.
And a drum 8B that is rotated by the handle 8A and winds up the wire 7. The rotation shaft of the handle 8A is connected to the drum 8B via a gear (not shown). The winch 8 has a built-in brake mechanism (not shown), and can rotate the handle 8A to rotate the drum 8B. However, even if the wire 7 wound around the drum 8B is pulled, the drum 8B is not rotated. For this reason, the handle 8A is rotated, the wire 7 is wound on the drum 8B, the work table 3 is raised along the column 4, and the handle 8A is reversed, and the wound wire 7 is fed out. The platform 3 can be lowered. The work table 3 is stopped at a predetermined height without rotating the handle 8A.

[0026]

The lifting machine used for the tree of the present invention has an extremely simple structure, can be lightened in its entirety, and can be stably raised at a high distance from a high tree by a convenient distance for work. . Therefore, it can be used extremely conveniently for pruning tall trees. In particular, the elevator according to the present invention can efficiently perform operations such as pruning by supporting columns at appropriate positions vertically even if the tree has many branches. Further, the elevator according to the present invention has a feature that even if there are branches around the tree, the work table can be moved around the tree and the work table can be moved up and down to a position most convenient for work.

[Brief description of the drawings]

FIG. 1 is a side view showing a conventional working machine that can move up and down along trees.

FIG. 2 is a side view showing an elevator used for trees according to an embodiment of the present invention.

FIG. 3 is a horizontal sectional view of the elevator shown in FIG. 2;

FIG. 4 is a horizontal sectional view showing an example of a support column.

FIG. 5 is a horizontal sectional view of a portion connecting a connecting rod to a tree.

FIG. 6 is a partially sectional plan view showing another embodiment of the connecting rod.

FIG. 7 is an enlarged side view showing a connecting portion between the inclined rod and the support.

FIG. 8 is a schematic perspective view showing a state in which an elevator is vertically set apart from a tree.

[Explanation of symbols]

K: Trees 1: Running platform 2: Telescopic legs 3: Working table 3A: Horizontal platform 3B: Handrail
3C: Vertical rod 4: Support column 5: Connecting rod 5A: Connecting pipe 5B: Telescopic pipe
5C: clamping plate 6: inclined rod 6A: telescopic leg 7: wire 8: winch 8A: handle 8
B ... Drum 9 ... Protrusion 10 ... Plate 11 ... Rib 12 ... Abutment plate 13 ... Wire 14 ... Ring 15 ... Tightening tool 16 ... Through hole 17 ... Ball joint connector 17A ... Horizontal ball shaft 1
7B: Spherical bearing 18: Connection plate 19: Wheel 20: Arm 21: Angle

Claims (1)

(57) [Claims] 1. A column (4) that stands vertically adjacent to a tree (K), a connecting rod (5) that connects the middle of the column (4) to the tree (K), An inclined rod (6) supporting the support (4) by connecting the upper end in the middle and stretching the ground at the lower end, and a support
(4) A worktable (3) connected so as to be able to move up and down, and a wire (7) attached to the worktable (3) and connected to the upper end of the column (4) are wound up, and the worktable ( And a winch (8) for raising the work table (3) along the support (4) .Then, the wire (7) is wound on the work table (3) with the winch (8), and the work table (3) is supported on the support (4). ) A lift used for trees that is configured to rise along.