JP6870880B1 - Rope connector for capture structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rope connecting tool of a trapping structure capable of reliably connecting two orthogonal rope members while preventing sliding and a decrease in strength. SOLUTION: A rope connecting tool 1 of a trapping structure of the present invention includes two bearing plates 10 and a plurality of fasteners 20, and the bearing plates 10 are a plate main body 11 and a bottom surface of the plate main body 11, respectively. One first groove 12 extending across the plate and two extending from the outer edge of the bottom surface of the plate body 11 toward the center of the bottom surface in a direction orthogonal to the first groove 11 and being divided at the center of the bottom surface of the plate body 11. The first groove 12 has a second groove 12 and a plurality of insertion holes 14 penetrating both sides of the plate body 11, the first groove 12 becomes deeper from the outer edge of the bottom surface of the plate body 11 toward the center, and the second groove 12 is the plate. The bottom surfaces of the main body 11 become shallower from the outer edge toward the center, and the bottom surfaces of the two bearing plates 10 are opposed to each other in a state of being rotated by 90 degrees so that the first groove 12 and the second groove 13 face each other. It is characterized in that a planar bearing hole 30 capable of laterally bearing the rope material B on the inner peripheral surface is formed between the two. [Selection diagram] Fig. 1

Description

The present invention relates to a rope connecting tool, and particularly to a rope connecting tool of a catching structure in which rope members constituting a catching net are connected at intersections in a transmission type catching structure.

In a transmission type capture structure such as a sabo dam, a capture net for capturing the flow-down objects due to debris flow is laid between mountain valleys and rivers. The catching net is constructed by connecting rope materials such as wire ropes vertically and horizontally with a connecting tool.
Patent Document 1 discloses a connecting tool that connects rope members that are continuous in the vertical and horizontal directions by sandwiching them at intersections by a combination of a flat plate having a concave groove and two U-shaped bolts.
Patent Document 2 discloses a connector for connecting a plurality of short ropes arranged vertically and horizontally with four mooring pins passed through a loop at an end.

Japanese Unexamined Patent Publication No. 2009-299321 Japanese Patent No. 65795553

The prior art has the following problems.
<1> Sliding rope material.
The technique of Patent Document 1 is point contact in which the vertical and horizontal rope members are in contact with each other only at the intersection. The rope material can be partially surface-contacted by supporting the flat plate and compressing the rope material, but since the friction area is still small, the rope material tends to slide even after the connection.
<2> Decreased strength of rope material.
In the technique of Patent Document 1, the cross section of the rope material is easily crushed because the compressive load is concentrated at the intersection of the rope materials by supporting the flat plate. When the rope material is crushed, the cross-sectional area becomes small, so that the design cross-sectional strength of the rope material cannot be exhibited.
<3> Workability and material cost.
In the technique of Patent Document 2, since all the short ropes are connected at the ends, there are many connecting points and the workability is low. In addition, since a large number of short ropes with looped ends are used, the number of parts is large and the material cost is high.

An object of the present invention is to provide a rope connector for a trapping structure that can solve the above problems.

The rope connector of the trapping structure of the present invention includes two bearing plates and a plurality of fasteners, and the bearing plate is a plate body and a first piece that traverses the bottom surface of the plate body, respectively. One groove, two second grooves extending in a direction orthogonal to the first groove from the outer edge of the bottom surface of the plate body toward the center of the bottom surface, and being divided at the center of the bottom surface of the plate body, and the plate body. The first groove is deepened from the outer edge of the bottom surface of the plate body toward the center, and the second groove is deepened from the outer edge of the bottom surface of the plate body toward the center. By making the bottom surfaces of the two bearing plates face each other in a state of being relatively rotated 90 degrees, the rope material is surfaced on the inner peripheral surface between the facing first groove and the second groove. It is characterized in that a planar bearing hole capable of bearing pressure is formed.

The rope connecting tool of the trapping structure of the present invention may be provided with protruding, grooved, or stepped anti-slip means on the inner peripheral surface of the first groove and / or the second groove.

In the rope connector of the trapping structure of the present invention, the edge portion where the first groove contacts the outer edge of the plate body may be formed of a curved surface.

The rope connecting tool of the trapping structure of the present invention may have four insertion holes in which a plurality of insertion holes are provided in four areas divided by the first groove and the second groove, respectively.

In the rope connecting tool of the trapping structure of the present invention, the fastener may consist of a combination of bolts and nuts.

Since the rope connector of the trapping structure of the present invention has the above structure, it has at least one of the following effects.
<1> The two intersecting rope members are sandwiched in a planar shape by curved planar bearing holes instead of point contact at the intersection. Therefore, the friction area of the rope material is large and the rope material is difficult to slide.
<2> Since the rope material is evenly supported by the peripheral surface, the cross section is not easily crushed. Therefore, the original cross-sectional strength of the rope material can be exhibited.
<3> Workability is extremely high because the rope members can be connected by simply sandwiching the intersections of the rope materials from both sides and fastening them with bolts.
<4> Since one continuous rope material can be connected at a plurality of places, the number of parts is small and the material cost is low.

Explanatory drawing of the rope connector of the trapping structure of this invention. Explanatory drawing of the transmission type capture structure. (A) is a perspective view of the bearing plate. (B) is a cross-sectional view of a bearing plate along the surface b of (a).

Hereinafter, the rope connector of the trapping structure of the present invention will be described in detail with reference to the drawings.

[Rope connector]
<1> Overall configuration (Fig. 1).
The rope connecting tool 1 of the present invention is a member that connects a plurality of rope members B constituting a catching net at intersections mainly in a transmission type catching structure A such as a sabo dam.
The rope connector 1 includes at least two bearing plates 10 and a plurality of fasteners 20 for fastening the two bearing plates 10. In this example, the fastener 20 is a combination of four sets of bolts 21 and nuts 22.
The rope connector 1 has a planar bearing pressure that supports the rope material B on the inner peripheral surface in a planar shape between the first groove 12 and the second groove 13 by two bearing plates 10 having the bottom surfaces facing each other. It has one feature in that the hole 30 can be formed.

<1.1> Transmission type capture structure (Fig. 2).
In the transmission type capture structure A, for example, a capture net is spread between a plurality of rigid structures erected at intervals on a foundation provided on the valley floor, and between the rigid structure and the valley shore. It becomes.
The capture net is formed by knitting a plurality of rope materials B into a net shape. In this example, a metal wire rope is used as the rope material B.
In this example, a plurality of rope materials B are laid horizontally between rigid structures, and the horizontally laid rope materials B are vertically connected by the plurality of rope materials B to form a net for capturing a transmissive portion. The intersections of the rope members B are connected by the rope connecting tool 1.
The structure of the transmissive trapping structure A is not limited to the above, and the rope connector 1 of the present invention can be applied to the transmissive trapping structure A having another structure. Further, the installation location of the rope connector 1 is not limited to the catching net of the transmissive portion, but can also be applied to the catching net of the sleeve portion.

<2> Support plate (Fig. 1).
The bearing plate 10 is a member that sandwiches and supports the intersection of the rope members B.
The bearing plate 10 includes a plate main body 11, one first groove 12 formed on the bottom surface of the plate main body 11, and two second grooves formed on the bottom surface of the plate main body 11 in a direction orthogonal to the first groove 12. At least a groove 13 and a plurality of insertion holes 14 penetrating both sides of the plate body 11 are provided.
In this example, a steel plate having a circular shape in a plan view is used as the plate body 11. However, the material and shape of the plate body 11 are not limited to this, and for example, a rectangular shape in a plan view, an octagon in a plan view, or another polygonal shape may be adopted.
In this example, four insertion holes 14 are provided. The position of the insertion hole 14 is provided near the center of each of the four areas divided into a cross shape by the first groove 12 and the second groove 13 in the bottom view of the plate main body 11.

<2.1> First groove.
The first groove 12 is a groove that forms a planar bearing hole 30 in combination with the second groove 13 of another bearing plate 10.
The first groove 12 is provided so as to pass through the center of the plate body 11 and cross the bottom surface of the plate body 11.
The first groove 12 becomes deeper from the outer edge of the bottom surface of the plate body 11 toward the center.
When the transmission type capture structure A is in service, stress due to the pulling of the rope material B is concentrated on the edge portion where the first groove 12 is in contact with the outer edge of the plate body 11. Therefore, in this example, in order to avoid damage to the rope material B due to stress concentration, the edge portion between the first groove 12 and the outer edge of the plate body 11 is formed of a curved surface (not shown).
Further, in this example, the anti-slip means 15 is formed on the inner peripheral surface of the first groove 12. However, the non-slip means 15 is not an essential component.

<2.2> Second groove.
The second groove 13 is a groove that forms a planar bearing hole 30 in combination with the first groove 12 of another bearing plate 10.
The second groove 13 is provided in a direction orthogonal to the first groove 12 from the outer edge of the plate body 11 toward the center.
The second groove 13 becomes shallower from the outer edge of the bottom surface of the plate body 11 toward the center, and is divided into two at the center of the plate body 11.
The shape of the second groove 13 and the inclination angle of the plate main body 11 with respect to the bottom surface correspond to the shape of the first groove 12 and the inclination angle of the plate with respect to the bottom surface of the main body 11. That is, it is desirable that the planar bearing hole 30, which will be described later, has a single diameter corresponding to the diameter of the rope material B by combining the first groove 12 and the second groove 13.

<2.3> Non-slip means.
The non-slip means 15 is a means for preventing the rope material B from slipping in the planar bearing hole 30.
In this example, as the non-slip means 15, a plurality of protrusions formed along the circumferential direction are adopted on the inner peripheral surface of the first groove 12.
The non-slip means 15 can increase the frictional resistance force related to the bearing pressure of the bearing plate 10 and suppress the sliding of the rope material B.
The structure of the non-slip means 15 is not limited to the protrusions, and may be a groove or a step provided along the inner peripheral surface of the first groove 12. Further, it may be provided in the second groove 13 in addition to the first groove 12. Alternatively, it may be provided only in the second groove 13 without being provided in the first groove 12.

<3> Planar bearing hole (Fig. 3).
The planar bearing hole 30 is a hole for bearing the rope member B in a planar manner while avoiding stress concentration at the intersection of the intersecting rope members B.
The planar bearing hole 30 is formed between the first groove 12 and the second groove 13 by facing the bottom surfaces of the two bearing plates 10. That is, the inner surface of the first groove 12 and the inner surface of the second groove 13 form a planar bearing hole 30 which is a cylindrical space curved toward the bottom surface side of the first groove 12.
The two orthogonal planar bearing holes 30 communicate slightly at the intersection.
The rope connector 1 of the present invention is orthogonal by holding the rope material B in a planar manner with two planar bearing holes 30 that are orthogonal to each other while bending in the two bearing plates 10. The two rope members B can be reliably connected without (or only slightly) contact at the intersection.

<4> Rope material connection.
First, the intersection of the two intersecting rope members B is sandwiched between the two bearing plates 10 from both sides.
Specifically, for example, the bottom surface of the bearing plate 10 is brought into contact with the front surface side of the intersection of the rope material B, and the rope material B on the front surface side is fitted into the first groove 12. Subsequently, the bottom surface of the bearing plate 10 whose bottom surface is rotated 90 degrees with respect to the bearing plate 10 on the front side is brought into contact with the back side of the intersection of the rope material B, and the rope material B on the back side is placed in the first groove. Fit into 12
As a result, a planar bearing hole 30 is formed between the facing first groove 12 and the second groove 13, and each rope member B is held in the planar bearing hole 30.
Subsequently, the two bearing plates 10 are fastened with the fastener 20.
Specifically, for example, the bolt 21 is communicated with the corresponding insertion hole 14 of the two bearing plates 10, and the nut 22 is screwed to the tip to fasten the bolt 21.
By the above simple procedure, two orthogonal rope members B can be reliably connected at an intersection.

1 Rope connector 10 Supporting plate 11 Plate body 12 1st groove 13 2nd groove 14 Insertion hole 15 Anti-slip means 20 Fastener 21 Bolt 22 Nut 30 Planar bearing hole A Permeable capture structure B Rope material

Claims (5)

In a transmissive trapping structure, a rope connecting tool that connects a plurality of rope materials constituting a trapping net at intersections.
Equipped with two bearing plates and multiple fasteners,
The bearing plates are oriented so as to be orthogonal to the plate body, one first groove crossing the bottom surface of the plate body, and the outer edge of the bottom surface of the plate body toward the center of the bottom surface. It has two second grooves extending at the center of the bottom surface of the plate body and having a plurality of insertion holes penetrating both sides of the plate body.
The first groove becomes deeper from the outer edge of the bottom surface of the plate body toward the center.
The second groove becomes shallower from the outer edge of the bottom surface of the plate body toward the center.
By facing the bottom surfaces of the two bearing plates in a state of being rotated by 90 degrees relatively, the rope material is placed on the inner peripheral surface between the first groove and the second groove facing each other. It is characterized in that a planar pressure hole capable of supplying pressure in a planar manner is formed.
Rope connector. The rope connecting tool according to claim 1, wherein a protrusion-shaped, groove-shaped, or step-shaped anti-slip means is provided on the inner peripheral surface of the first groove and / or the second groove. The rope connecting tool according to claim 1 or 2, wherein the edge portion in which the first groove contacts the outer edge of the plate body is formed of a curved surface. The invention according to any one of claims 1 to 3, wherein the plurality of insertion holes are four insertion holes provided in each of the four areas partitioned by the first groove and the second groove. Rope connector. The rope connecting tool according to any one of claims 1 to 4, wherein the fastener is made of a combination of a bolt and a nut.

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