JPH06197646A - Turn buckle equipped with shock absorber - Google Patents

Abstract

PURPOSE:To provide a shock absorber-equipped turn buckle capable of surely preventing the breakage of the trunk of a tree with gusts, cold winds, etc., in winter season, etc., e.g. even in the case of a tree soft in its wooden property and large in its growth speed. CONSTITUTION:The turn buckle is characterized by movably and spirally inserting an upper control spiral element and a lower control spiral element connected to a lower wire into spiral member holes formed in both the upper and lower side surfaces of a connecting shaft and attaching a connecting cylinder to the upper control spiral member in a state capable of transferring the connection cylinder in its axial direction and always energized in the inward axial direction by the elastic body disposed in the connecting cylinder, the connecting cylinder being attached to an attachment connected to an upper wire. When a tree is supported with the turn buckles from positions arranged near to the circumference of the tree in substantially equal distances and when the tree is attached with a large impact due to a gust and tilted, the connecting cylinder of the turn buckle is transferred in the outward axial direction against the energizing force of the elastic body, whereby the impact is absorbed with the elastic force of the elastic body to prevent the breakage of the tree due to the impact of the gust.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock absorber turnbuckle, and more particularly to a shock absorber turnbuckle suitable for supporting trees planted on the ground.

[0002]

2. Description of the Related Art In general, a tree, for example, a pine that grows fast and has a soft woody material, may be subjected to a large shock due to a strong wind gust or a cold wind blown in the winter and the trunk may suddenly break.

Therefore, conventionally, a branch extending from the trunk of a pine planted on the ground is towed and supported by a plurality of supporting devices from, for example, substantially circumferentially equidistant positions around the pine, so that the trunk of the pine has a gust. I was preventing it from breaking.

That is, in FIG. 4, (1) is a tree planted on the ground (2), for example, a pine that grows quickly and has a soft woody material. It is towed and supported by a plurality of supporting devices (4) from a plurality of positions equidistant from the circumference. Each supporting device (4) has a turnbuckle (8) with an upper wire (6) and a lower wire (7).
The upper wire (6) is connected to the branch (5) of the pine (1) through the fastener (9), and the anchor (10) is attached to the lower end of the lower wire (7). The conventional turnbuckle (8) includes a connector (11) having screw holes formed on both end surfaces and a long connecting screw screwed into the screw hole of the connector (11) so as to project and retract. (12) (1
3) and.

Then, the anchors (10) of the plurality of supporting devices (4) are driven into the ground (2), and the branches (5) of the pine (1) are pulled and supported from the surroundings, whereby the pine (1) is supported. ) Was kept standing to prevent the trunk (3) of the pine (1) from breaking due to wind pressure such as gusts or cold wind.

[0006]

A conventional turnbuckle (8) has a structure in which connecting screws (12) and (13) are screwed into screw holes on both sides of a connecting tool (11), and wind pressure such as gust of wind is generated. Since it cannot absorb the shock generated by
When a load larger than the traction supporting force acts on the trunk (3) of the pine (1) due to wind pressure such as gust of wind, the trunk (3) of the pine (1) gusts. There was a problem that it could not endure wind pressure such as, and suddenly breaks from the trunk (3).

The present invention has been proposed in view of the above problems. For example, even if a tree grows quickly and has a soft wood, the trunk of the tree is broken due to gusts or cold winds blowing in the winter. It is an object of the present invention to provide a turnbuckle with a shock absorber capable of reliably preventing the above.

[0008]

In order to achieve the above-mentioned object, the present invention has a mounting bracket rotatably mounted on an upper end thereof,
And, a connecting cylinder having a bottom wall portion having a through hole at the lower end portion, a connecting shaft having screw holes formed at the upper and lower end surfaces, and a screw inserting into the upper screw hole of the connecting shaft so as to project and retract, The upper part with the pressure receiving plate attached to the upper end is loosely inserted into the connecting cylinder through the through hole of the bottom wall, and the upper adjusting screw is arranged in the connecting cylinder to receive pressure from the bottom wall of the connecting cylinder. An elastic body that compressively intervenes between the plate and the bottom wall of the connecting cylinder to constantly elastically press the tightening nut that is screwed to the upper adjusting screw for position adjustment, and can project and retract into the lower screw hole of the connecting shaft. And a lower adjusting screw having a connecting portion at the lower end.

[0009]

When the turnbuckle according to the present invention is used, for example, in the case of supporting a pine that grows quickly and is soft in wood, it can be used in the case of being impacted by wind pressure such as strong gusts or cold winds blowing in winter. Even if there is, the impact is absorbed by the elastic body, so it is possible to reliably prevent the pine trunk from breaking.

[0010]

The following is a description of the case where the turnbuckle (a) according to the present invention is used in a supporting device (b) for supporting a tree such as pine, with reference to FIGS. 1 to 3. The same components as those shown in FIG. 4 are designated by the same reference numerals and the description thereof will be omitted.

In FIGS. 1 to 3, (21) is a hollow connecting shaft having screw holes (22) and (23) on both upper and lower sides,
Reference numeral (24) is an upper adjusting screw that is inserted into the upper screw hole (22) of the connecting shaft (21) so as to project and retract, and a disc-shaped pressure receiving plate (26) is provided at the upper end of the upper adjusting screw (24). It is attached and fixed. Reference numeral (27) is a lower adjusting screw screwed into the lower screw hole (23) of the connecting shaft (21), and the lower adjusting screw (27) has a screw portion (28) in the upper portion and has a lower end in the lower portion. A bifurcated connecting part (29) is integrally provided, and a connecting pin (30) is attached to the connecting part (29).

Reference numeral (31) is a connecting cylinder having a bottom wall portion (33) having a top surface opened and a through hole (32) formed in the central portion, and the connecting cylinder (31) has an upper end portion, A mounting portion (35) is provided by flatly forming a slit-shaped opening (34) that gradually closes toward the tip, and an inclined stepped locking portion (36) is provided on the inner surface of the lower portion of the mounting portion (35). It was formed. The upper part of the upper adjusting screw (24) is connected to the connecting tube (31).
Through the through hole (32) of the bottom wall portion (33) of the
1) It is inserted in the inside so as to be movable in the axial direction. Further, a U-shaped mounting bracket (38) is removably mounted on the upper end mounting portion (35) of the connecting tube (31) via a mounting screw (37).

Reference numeral (41) is disposed in the connecting cylinder (31) and is interposed between the bottom wall portion (33) and the pressure receiving plate (26), and the lower end thereof is the bottom wall portion of the connecting cylinder (31). An elastic body attached to and fixed to (33), for example, a compression spring, always urges the connecting cylinder (31) downward by the spring force of the compression spring (41) to connect the pressure receiving plate (26) to the connecting cylinder (31). The locking portion (36) of (1) is repressed. (42) and (43) are upper and lower tightening nuts screwed to the upper and lower adjusting screws (24) and (27), and the upper tightening nut (42) is a screw part of the upper adjusting screw (24). Tighten by screwing on (25),
1) is positioned and fixed, and the lower tightening nut (43) is screwed and tightened on the lower adjusting screw (27) to fix the connecting shaft (21).

When a pine tree (1) that grows fast and is soft in wood is planted on the ground (2), the pine tree (1) is placed at a plurality of supporting devices from the surrounding circumferential pipe arrangement position. It is pulled and supported by (b). That is, the upper wire (6) is connected to the attachment fitting (38) attached to the upper end attachment portion (35) of the connection tube (31) of the turnbuckle (a) having the above-described configuration, and the lower end of the lower adjustment screw (27) is attached. The lower wire (7) is connected to the connecting portion (29) of the above through the connecting pin (30).

The upper ends of the upper wires (6) are connected to the branches (5) of the pine (1) through the fasteners (9), and the lower ends of the lower wires (7) are connected to the ground. Attach to the anchor (10) driven into (2). Then, the upper and lower adjusting screws (24) (27) are screwed into the upper and lower screw holes (22) (23) of the connecting shaft (21) and tightened to tighten the pine (1) into a substantially circular shape. It is towed and supported almost evenly from the circumferentially equidistant positions.

With the pine (1) planted on the ground (2) in this way, strong gusts or cold winds blow during the winter and the wind pressure causes the pine (1) to pull and support a predetermined supporting device (b). When a load larger than the traction support force of the support device (b) acts in the direction opposite to the direction, the trunk (3) of the pine (1) tilts in the direction opposite to the predetermined traction support direction of the support device (b), and the turn. Pull the buckle (a). Due to this tensile force, the connecting cylinder (31) of the turnbuckle (a) moves axially upward while compressing the compression spring (41) arranged in the connecting cylinder (31), and the pressure receiving plate (26). ) Separates from the locking portion (36) of the connecting cylinder (31), and the pine (1) is blown by a gust of wind or the like.
It absorbs the shock that acts on the trunk (3). Therefore, even if a load larger than the supporting force of the supporting device (b) acts on the trunk (3) of the pine (1), it is possible to reliably prevent the trunk (3) from breaking.

When the wind pressure ceases to act on the trunk (3) of the pine (1) due to subsided gusts or the like, the compression spring (41) in the connecting cylinder (31) of the turnbuckle (a) of the predetermined supporting device (b). ) Is elastically restored, and the pressure receiving plate (26) is connected to the connecting cylinder (3
The pines (1) are returned to their original positions by being pressed until they come into contact with the locking portions (36) of 1), and the pine (1) is again held upright by the plurality of supporting devices (b).

When the pine (1) grows fast, the pine (1) grows while compressing the compression spring (41) in the connecting cylinder (31) of the turnbuckle (a).
Growth is not hindered.

In the above examples, the case of a tree, particularly a pine tree that grows quickly and has a soft wood quality, is explained.
The present invention is not limited to this, and can be widely applied not only to trees but also to any part where a large impact acts.

[0020]

The turnbuckle according to the present invention is used, for example, in a supporting device for supporting trees, particularly pine that grows quickly and has a soft woody material. Even if a large impact is exerted on the pine due to the wind pressure, this impact is absorbed by the turnbuckle, so it is possible to reliably prevent the pine trunk from breaking.
Moreover, the structure is simple, the wire is easily attached, and the manufacturing cost is low.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a turnbuckle according to the present invention.

2 is a partially enlarged sectional view of FIG.

FIG. 3 is a schematic explanatory view showing a usage procedure of the turnbuckle according to the present invention.

FIG. 4 is an explanatory view showing a usage procedure of a conventional turnbuckle.

[Explanation of symbols]

 21 connecting shaft 22, 23 screw hole 24 upper adjusting screw 26 pressure receiving plate 27 lower adjusting screw 29 connecting portion 31 connecting tube 32 through hole 33 bottom wall portion 38 mounting bracket 41 elastic body 42 tightening nut

Claims (1)

[Claims] 1. A mounting bracket is rotatably mounted on the upper end,
And, a connecting cylinder having a bottom wall portion having a through hole at the lower end portion, a connecting shaft having screw holes formed at the upper and lower end surfaces, and a screw inserting into the upper screw hole of the connecting shaft so as to project and retract, The upper part with the pressure receiving plate attached to the upper end is loosely inserted into the connecting cylinder through the through hole of the bottom wall, and the upper adjusting screw is arranged in the connecting cylinder to receive pressure from the bottom wall of the connecting cylinder. An elastic body that compressively intervenes between the plate and the bottom wall of the connecting cylinder to constantly elastically press the tightening nut that is screwed to the upper adjusting screw for position adjustment, and can project and retract into the lower screw hole of the connecting shaft. A turnbuckle with a shock absorber, which comprises a lower adjusting screw having a connecting portion at a lower end.