JP5199961B2 - Protection cap for bending prevention - Google Patents

Description

  The present invention covers a part of an annular part with a thimble formed by firmly binding a rope with two clamp pipes at the end of a wire rope or the like, and a double clamp rope bundle part with two clamp pipes The present invention relates to a protective cap for bending prevention that prevents damage.

  As this type of protective cap, the applicant has applied for a patent application of Japanese Patent No. 2958517 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2003-321188 (Patent Document 2).

  In brief, the protective cap is formed in a shape that can be covered and protected from the main rope portion close to the rope fitting portion to the middle of the annular portion with the thimble. Even if the rope is pulled at a slightly inclined angle during the work of lifting the object, the clamp pipe and the upper part of the thimble are inclined together by the protective cap, so the lower end of the clamp pipe and the upper end of the thimble are the main rope part. This prevents the risk of the main rope part being cracked or cut, and the exposed end of the rope that is fitted through the thimble is covered with a protective cap. In addition, the frustration at the end of the rope directly protects the hands and fingers from touching and damages the hands and fingers. In which an effect such as there is no risk of damaging the contact with hanging quality goods in quality goods, it is very practical.

Japanese Patent No. 2995817 JP 2003-321188 A

  By the way, when higher strength than usual is required for the annular portion 5 with the thimble, the rope aligning portion 3 combined through the thimble 1 as shown in FIGS. Conventionally, the strength is improved by bundling with two clamp pipes 4 fitted at intervals in the length direction (double clamp rope bundling portion 6).

  However, when the rope aligning portion 3 is bundled and stopped using two clamp pipes 4 in this way, the annular portion 5 with the thimble is double-clamped rope bundled portion in the same manner as the case of bundling with one clamp tube 4. As shown in FIG. 6, the rope fitting portion 3 existing between the two clamp tubes 4 has a clamp tube as shown in FIG. If it is bent so as to be inclined at an angle with respect to 4, the strand of the rope locally expands or contracts, or the strand of the rope contacts the edge of the clamp tube 4 to cause a crack or cut. There was concern to do.

  The present invention pays attention to the problems of the thimble-equipped annular portion formed by using such two clamp tubes, and provides a protective cap for preventing bending having a simple structure capable of solving this problem.

  The gist of the present invention will be described with reference to the accompanying drawings.

Two metal clamps, which are fitted with a rope aligning portion 3 with a rope end folded back through the thimble 1 parallel to the main rope portion 2 at an interval in the rope length direction of the rope aligning portion 3 A portion of the annular portion 5 with the thimble formed at the end of the rope by being bundled with the tube 4 and the double clamp rope bundle portion 6 formed by the two clamp tubes 4 adjacent to the annular portion 5 with the thimble are covered. The cap body 7 is formed in a cylindrical shape that is in contact with or close to the two clamp pipes 4 of the double clamp rope bundling portion 6, It is formed in a cylindrical shape having a length that can cover from the main rope portion 2 in the vicinity of the double clamp rope bundling portion 6 to the middle portion of the base portion of the annular portion 5 with the thimble, and the cap The rope body 7 prevents the rope fitting part 3 from bending and tilting between the two clamp pipes 4 of the double clamp rope bundle part 6 and the thimble. The rope end side clamp tube 4 located on the side of the attached annular portion 5 is made of a material having hardness that prevents the annular portion 5 with thimble from bending and tilting , and the cap body 7 includes the double clamp The inner shape of the side of the rope bundling portion 6 covering the clamp tube 4 that covers the clamp tube 4 is formed in a small diameter press-fit portion 8 that is slightly smaller in diameter than the outer diameter of the clamp tube 4, and the thimble The inner shape of the side covering the clamp tube 4 located on the side of the attached annular portion 4 is formed in a large diameter insertion portion 9 having a diameter slightly larger than the outer diameter of the clamp tube 4, and the cap body 7 Large diameter insertion part When the clamp tube 4 on the rope center side of the double clamp rope bundling portion 6 is inserted and press-fitted to the small-diameter press-fit portion 8, the clamp tube 4 on the thimbled annular portion 5 side is not attached to the large-diameter insertion portion 9. The present invention relates to a protective cap for preventing bending, characterized in that it is configured to be inserted and arranged in a press-fitted state .

When the cap body 7 is inserted into the small diameter press-fit portion 8 by inserting the clamp tube 4 located on the rope center side of the double clamp rope bundle portion 6 from the large diameter insertion portion 9, claim 1 bend preventing protection cap according to the end portion positioned on the annular portion 5 side with thimble of the cap member 7 is characterized by being configured in a shape which covers up to the base middle section of the thimble with the annular portion 5 It is related to.

Further, the cap body 7 is made of a hard synthetic resin or a hard synthetic rubber, and relates to the protective cap for bending prevention according to any one of claims 1 and 2 .

Further, the cap member 7, claim 1-3, characterized in that part covering the rope matching unit 3 between the two clamp tube 4 is formed in the thickest and comprising tubular This relates to the bending prevention protective cap described in item 1.

  Since the present invention is configured as described above, it is possible to cover from the main rope portion in the vicinity of the double clamp rope bundle portion to the middle portion of the base portion of the thimble annular portion with a cylindrical cap body made of a material having hardness. It is also possible for the rope joint between the two metal clamp tubes to bend and tilt with respect to the two clamp tubes. Can be prevented from bending and tilting, so that the main rope part (of the rope fitting part) can be prevented from locally extending or shrinking between the two clamp pipes. Can prevent the risk of cracking or cutting the strands of the main rope, and the frustration at the end of the rope can touch the hands and fingers directly, damaging the hands and fingers. In addition to being protected, there is no risk of damaging the suspended object due to the fact that the bundling stop part (double clamp rope bundled part) by the clamp tube directly contacts the suspended object. This is a protective cap for preventing bending.

Further, in the present invention , the clamp tube on the rope center side of the double clamp rope bundling portion can be easily inserted from the large diameter insertion portion on the cap body tip side, and the double clamp rope bundling portion inserted into the large diameter insertion portion By inserting the clamp tube at the center of the rope further into the back, the cap body can be positioned in a press-fit state with a small diameter, and the cap body can be positioned in a covered state. It becomes a protective cap.

Further, in the invention according to claim 2, for the prevention of bending, it is possible to reliably cover and position from the main rope portion in the vicinity of the double clamp rope bundle portion to the middle portion of the base portion of the thimble-equipped annular portion. It becomes a protective cap.

In the invention according to claim 3 , the cap body that reliably exhibits the functions and effects can be easily designed and realized, and the protective cap for preventing bending can be configured with more practicality.

According to a fourth aspect of the present invention, there is provided a protective cap for preventing bending of a rope-matching portion between two clamp pipes, which can prevent the tilting of the rope with respect to the two clamp pipes more effectively. It becomes.

It is explanatory front view which notched the cap body which shows the use condition of a present Example. It is explanatory front sectional drawing which shows a present Example. It is a description perspective view which shows the state which is going to mount | wear with the cap body of a present Example to the base part middle part of a cyclic | annular part with a thimble and a double clamp rope bundling part. It is explanatory front view which notched the cap body which shows the state which is going to attach the cap body of a present Example to the base part middle part of a ring part with a thimble and a double clamp rope bundling part. It is explanatory front view which shows the state which the cyclic | annular part with a thimble bent so that it might incline diagonally with respect to a double clamp rope bundling part. It is explanatory front view which shows the state which the rope matching part which exists between the two clamp pipes of a double clamp rope bundling part bent so that it might incline with respect to a clamp pipe | tube.

  Embodiments of the present invention that are considered suitable (how to carry out the invention) will be briefly described with reference to the drawings, illustrating the operation of the present invention.

  The protective cap for bending prevention according to the present invention includes, for example, a rope aligning portion 3 in which a rope end folded back via a thimble 1 is aligned in parallel with the main rope portion 2 like a sling rope. It is used for one in which an annular portion 5 with a thimble is formed at the end of the rope by bundling with two metal clamp tubes 4 fitted at intervals in the rope length direction.

  That is, the cylindrical cap body 7 of the present invention covers the two clamp pipes 4 of the double clamp rope bundling portion 6 so as to come into contact with or close to each other, and the main rope near the double clamp rope bundling portion 6 From the part 2 to the middle part of the base of the annular part 5 with thimble can be covered.

  Then, even when the main rope portion 2 is pulled at an inclined angle while the suspended body is suspended with the rope with the annular portion 5 with the thimble, the cap body 7 made of a material having hardness is The rope alignment portion 3 between the two clamp tubes 4 is prevented from bending and tilting with respect to the two clamp tubes 4, and the rope alignment portion 3 between the two clamp tubes 4 and the two clamp tubes 4 Are held in a substantially straight line, and the thimble-equipped annular portion 5 and the double clamp are prevented from bending and tilting with respect to the clamp tube 4 located on the thimble-equipped annular portion 5 side. The rope bundling portion 6 is held in a substantially straight line.

  Therefore, the cap body 7 tilts the annular portion 5 with the thimble and the double clamp rope bundling portion 6 substantially integrally with the cap body 7 while maintaining a substantially straight line shape, so that the main rope portion 2 locally expands or contracts. It is possible to prevent the strands of the rope from hitting both ends of the clamp tube 4 and prevent the strands of the main rope portion 2 from being cracked or cut.

  Furthermore, it is protected that the frustration at the end of the rope directly touches the hand or finger and damages the hand or the finger, and the bundling stop portion (double clamp rope bundling portion 6) by the clamp tube 4 is directly suspended. There is no risk of abutting and damaging the suspended object.

  Further, the cap body 7 of the present invention covers the two clamp pipes 4 of the double clamp rope bundling portion 6 in contact with or close to each other using a material having hardness, and the double clamp rope bundling portion 6. Since it has a simple structure that can be formed in a cylindrical shape that can cover the main rope part 2 in the vicinity to the middle part of the base part of the annular part 5 with thimble, it is excellent in mass productivity and can be realized at low cost.

  Specific embodiments of the present invention will be described with reference to the drawings.

  In this embodiment, a rope matching portion 3 in which the end of a rope (wire rope) folded back through the thimble 1 is aligned in parallel with the main rope portion 2 is spaced apart in the rope length direction of the rope matching portion 3. A part of the annular part 5 with the thimble formed at the end of the rope by bundling with the two fitted metal clamp pipes 4 and the two clamp pipes 4 adjacent to the annular part 5 with the thimble A protective cap for bending prevention that covers and protects the double clamp rope bundling portion 6, and the hard cap body 7 is moved from the main rope portion 2 in the vicinity of the double clamp rope bundling portion 6 to the base portion of the annular portion 5 with the thimble. It is formed in a cylindrical shape having a length that can cover up to the middle part.

  Specifically, as shown in FIGS. 1 to 3, the cap body 7 is configured as a thick cylindrical body that has a thin barrel shape when viewed from the front. The cap body 7 is integrally molded as a hard synthetic resin (or may be made of a hard synthetic rubber).

  In addition, the cap body 7 has a cylindrical shape in which a middle portion in the length direction (vertical direction in the drawing), that is, a portion covering the rope matching portion 3 between the two clamp pipes 4 is thickest. It is preferable that the middle part of the cap body 7 exhibits the highest strength, and the rope matching portion 3 between the two clamp tubes 4 is bent and tilted with respect to the two clamp tubes 4. It is set as the structure which can prevent.

  Further, in the present embodiment, the end (upper end in the drawing) of the cap body 7 covering the main rope portion 2 in the vicinity of the double clamp rope bundling portion 6 is inward of the cap body 7. The concave portion 10 is formed as a main rope disposing portion 10, and the concave inner surface of the main rope disposing portion 10 is formed in a shape that increases in diameter toward the outer side. A gap 11 is formed between the main rope portion 2 and the entire circumference of the main rope portion 2 provided in the main rope arrangement portion 10.

  More specifically, the inner shape of the end portion of the tubular cap body 7 on the rope center side can cover the main rope portion 2 and gradually increases in diameter toward the outer side with respect to the entire circumference of the main rope portion 2. The main rope disposing portion 10 is formed by forming a gap 11 therebetween.

  The main rope portion 2 arranged in the main rope arrangement portion 10 having a larger diameter on the outer side has a gap 11 with the main rope arrangement portion 10 on the entire circumference. Only the main rope disposition portion 10 can be flexibly operated without applying a load (load).

  Further, the inner shape of the end portion (the lower end portion in the drawing) of the rope end side covering the thimbled annular portion 5 of the cylindrical cap body 7 is brought into contact with the middle portion of the base portion of the thimbled annular portion 5 and positioned. It is formed on the annular portion covering portion 13 having a shape that spreads in the shape of a square that can be covered in a state (expands outward).

  In the present embodiment, the cap body 7 has an inner shape on the side covering the clamp tube 4 located on the rope center side of the double clamp rope bundling portion 6 with a diameter slightly larger than the outer diameter of the clamp tube 4. A diameter that is formed in the small diameter press-fit portion 8 and that covers the clamp tube 4 located on the annular portion 4 with thimble has a diameter that is slightly larger than the outer diameter of the clamp tube 4. When the clamp tube 4 on the rope center side of the double clamp rope bundling portion 6 is inserted from the large diameter insertion portion 9 of the cap body 7 into the large insertion portion 9 and press fitted to the small diameter insertion portion 8. The clamp tube 4 on the annular portion 5 with thimble is configured to be inserted into the large diameter insertion portion 9 in a non-press-fit state.

  Specifically, the shape of the inner hole portion of the cylindrical cap body 7 is arranged from the step portion 12 to the main rope with the step portion 12 in the middle of the length direction of the cap body 7 as a boundary. A range from the step portion 12 to the annular portion covering portion 13 is formed while a range up to the portion 10 is formed in the small-diameter press-fit portion 8 having a circular hole shape slightly smaller in diameter than the outer diameter of the clamp tube 4. The range is formed in the large-diameter insertion portion 9 having a circular hole shape that is slightly larger than the outer diameter of the clamp tube 4.

  Further, in this embodiment, when the clamp pipe 4 located on the rope center side of the double clamp rope bundling portion 6 is inserted from the large diameter insertion portion 9 and is press fitted to the small diameter press fit portion 8, this cap The shape and length of the cap body 7 and the diameter of the cap body 7 so that the tip of the rope end side located on the thimble-equipped annular portion 5 side of the body 7 covers the middle portion of the base portion of the thimble-equipped annular portion 5. The formation position and formation range of the small press-fit portion 8 and the large diameter insertion portion 9 are set and configured.

  The method of use of this embodiment will be described. For example, when manufacturing a sling rope having a double clamp rope bundling portion 6, first, both ends of the main rope portion 2 having a predetermined length are connected to the base end of the cap body 7. Are inserted into the main rope disposing portion 10 and protruded from the covering portion 13 for the annular portion, and both ends of the main rope portion 2 are wound around the thimble 1 and the tip ends thereof are aligned with the main rope portion 2. The rope fitting portion 3 is fitted with a clamp tube 4 formed of a special metal such as stainless alloy steel with an interval in the length direction of the rope, and is bundled (compressed) to form an annular portion 5 with thimble. The cap body 7 is called back to the annular portion 5 with thimble to protect the middle part of the base portion of the double clamp rope bundle portion 6 and the annular portion 5 with thimble.

  At this time, the rope center side clamp tube 4 of the double clamp rope bundling portion 6 can be easily inserted into the large diameter insertion portion 9 of the cap body 7, and subsequently the double clamp rope inserted into the large diameter insertion portion 9. When the rope center side clamp tube 4 of the bundling portion 6 is further inserted deeply, an insertion resistance is generated when the rope center side clamp tube 4 reaches the small diameter press-fit portion 8, but this insertion resistance is resisted. When the rope center side clamp tube 4 is press-fitted into the small diameter press-fit portion 8 and the middle part of the base portion of the thimbled annular portion 5 is covered with the annular portion covering portion 13, the outer peripheral surface of the rope center side clamp tube 4 and the small diameter press fit The cap body 7 is positioned in a state in which the double clamp rope bundling portion 6 and the middle portion of the base portion of the thimble-equipped annular portion 5 are covered by the pressure frictional resistance with the inner peripheral surface of the portion 8.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 Thimble 2 Main rope part 3 Rope matching part 4 Clamp pipe 5 Cylindrical annular part 6 Double clamp rope bundling part 7 Cap body 8 Diameter small press-fitting part 9 Diameter large insertion part

Claims (4)

Rope matching part of the rope end folded back through the thimble parallel to the main rope part is bundled with two metal clamp pipes fitted at intervals in the rope length direction of this rope matching part. A protective cap for bending prevention that covers and protects a part of the annular portion with thimble formed at the end of the rope and the double clamp rope bundle portion by the two clamp pipes adjacent to the annular portion with thimble The cap body is formed in a cylindrical shape that is in contact with or close to the two clamp pipes of the double clamp rope bundle portion, and from the main rope portion in the vicinity of the double clamp rope bundle portion. It is formed in a cylindrical shape having a length that can cover the middle part of the base part of the annular part with the thimble. Rope end side clamp tube located on the thimble-equipped annular portion side while preventing the rope fitting portion from bending and tilting between the two clamp tubes of the bundle bundle portion In contrast, the annular portion with thimble is made of a material having a hardness to prevent bending and tilting , and the cap body covers the clamp tube located on the rope center side of the double clamp rope bundle portion. The inner shape on the side is formed in a small diameter press-fitting portion that is slightly smaller in diameter than the outer diameter of the clamp tube, and the inner shape on the side covering the clamp tube located on the annular portion with the thimble is It is formed in a large diameter insertion part that is slightly larger than the outer diameter of the pipe, and the clamp pipe on the rope center side of the double clamp rope bundling part is inserted from the large diameter insertion part of this cap body Wherein the small-diameter press-fitted mounting in the press-bending preventing protection cap, wherein the clamp tube of the thimble with the annular portion side is configured to be inserted and disposed in a non-pressed state to the large-diameter insertion portion Te. When the cap body is inserted from the large-diameter insertion portion into a clamp tube located on the rope center side of the double clamp rope bundle portion and is press-fitted to the small-diameter press-fit portion, the cap body is attached to the ring with the thimble. bending preventing protection cap of claim 1, wherein the end portion located on the section side is constructed in a shape which covers up to the base middle section of the thimble with the annular portion. The protective cap for bending prevention according to claim 1 , wherein the cap body is made of a hard synthetic resin or a hard synthetic rubber. Said cap body, according to any one of claims 1 to 3, characterized in that part covering the rope engaging portion between the two clamp tube is formed in the thickest and comprising tubular Protection cap for bending prevention.

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