JP2587394Y2 - Wire rope tension aid - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire rope tensioning aid suitable for use in slinging.

[0002]

2. Description of the Related Art In a conventional sling operation, for example, when a roll shaft on which a rolling roll or the like is wound is lifted by a crane, wires are slung on both ends of the roll shaft. Until the crane rises and the wire is tensioned, the worker holds the wire using a hook to prevent the slack wire from coming off the roll axis or shifting its position. Was.

[0003] In the above-described slinging operation using a hook, the worker can be prevented from being caught by a suspended load such as a roll shaft, but the work efficiency is poor.
Instruments for improving the efficiency and safety of such slinging operations are disclosed in Japanese Utility Model Laid-Open No. 55-176280 and Japanese Utility Model Laid-Open No. 55-176280.
There is a wire rope tensioning aid described in Japanese Patent Application Laid-Open No. 176281/1976 and Japanese Utility Model Application Laid-Open No. 55-176282.

[0004]

However, in the above-mentioned conventional wire rope tension assisting device, the wire rope tension assisting device must be mounted on the wire rope in advance. And the storage was troublesome.

In the conventional wire rope tensioning aid described above, a wire rope tensioning aid matching the thickness of the wire rope must be used. Therefore, when a plurality of wire ropes having different thicknesses are used, In addition, it was necessary to prepare a plurality of types of wire rope tensioning aids according to the thickness of the wire rope.

Furthermore, in the above-described conventional wire rope tensioning aid, the operator has to operate the wire rope tensioning aid with both hands, which is not convenient.

An object of the present invention is to provide an easy-to-use wire rope tensioning aid that can handle a plurality of types of wire ropes having different thicknesses.

[0008]

The wire rope tensioning aid of the present invention comprises a clamp body having a plurality of grooves formed on an outer periphery of a disc-shaped member, a spring provided on the clamp body, A steel ball provided movably in the direction of expansion and contraction of the spring in the clamp body, in contact with one end of the spring, and partially protruding from a side surface of a wire off groove which is a part of the plurality of grooves. And, having a wire disconnection prevention plate which is a plate-like member one end of which is rotatably attached in the vicinity of a wire fixing groove which is not a wire disconnection groove in the plurality of grooves, and one wire disconnection groove Assuming that one wire fixing groove is a pair, the width of the wire disconnection groove and the width of the wire fixing groove in each pair are substantially the same, the width of the groove of each pair is different, Grayed and the steel ball is provided one tsuzuic to one wire out grooves respectively, preventing plate out wire is characterized in that provided one tsuzuic to one wire fixing groove.

The wire rope tension assisting device of the present invention is characterized in that it has an adjusting bolt provided on the clamp body to change the position of the end of the spring opposite to the contact end with the steel ball. .

In the wire rope tension assisting device of the present invention, the clamp body is made of a monocast nylon resin (MONO).
CAST nylon resin).

[0011]

[Function] In the wire rope tensioning aid of the present invention,
First, the wire detachment prevention plate is rotated to open the wire fixing groove. Then, after the wire used for the slinging operation or the like is formed into a U shape and passed through a roll shaft or the like, one of the wires in the U shape is positioned in the wire fixing groove. Next, the wire detachment prevention plate is rotated to close the wire fixing groove, and the wire is held.

[0012] Then, the other end of the U-shaped wire is positioned in the wire escape groove. At this time, the steel ball is pushed by the outer periphery of the wire and moves in the longitudinal direction of the spring. Then, since the steel ball compresses the spring, the wire is sandwiched and held between the steel ball and the side surface of the wire separation groove by the repulsive force of the spring.

Thus, the wire is tensioned by holding two points of the wire slung in a U-shape with the wire rope tensioning aid.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing a wire rope tensioning aid according to an embodiment of the present invention, and is a partial sectional view. FIG. 2 is a plan view of the wire rope tensioning aid shown in FIG. As shown in FIGS. 1 and 2, the wire rope tension assisting device of this embodiment includes a clamp body 1, an adjusting bolt 2, a spring 3, a steel ball 4, and a wire detachment preventing plate 7. I have.

The clamp body 1 is a disc-shaped member having a predetermined thickness, in which grooves such as a wire detaching groove 5 and a wire fixing groove 6 are provided on the outer periphery of the disc. For example, MC nylon resin ( MONO CAST nylon resin). As the material, a resin other than the MC nylon resin, a metal such as aluminum, wood, or the like may be used. Here, the wire separation groove 5 is provided diagonally to the wire fixing groove 6, and the groove width of the wire separation groove 5 and the wire fixing groove 6 are substantially the same. A pair of φ14 millimeter wire grooves 8 and φ8 millimeter wire grooves 9 are provided on the outer periphery of the clamp body 1, and an adjusting bolt 2, a spring 3, a steel ball 4, and a wire slip prevention plate are provided in each groove. 7 and the like are attached (not shown). Each of the wire detachment groove 5, the wire fixing groove 6, the φ14 millimeter wire groove 8, and the φ8 millimeter wire groove 9 has an inwardly expanding gradient in which the width of the groove bottom is larger than the width at the outer periphery of the groove. .

The adjustment bolt 2 is a bolt inserted into a screw hole dug from the outer peripheral surface of the clamp body 1 toward the inside thereof. The spring 3 is a spring that is arranged in the hole dug below the screw hole so as to be able to expand and contract in the vertical direction in the drawing. The upper end of the spring 3 is in contact with the lower end of the adjustment bolt 2, It is in contact with the outer peripheral upper side of the steel ball 4. The steel ball 4 is disposed movably in the vertical direction in the drawing in a hole dug below the hole in which the spring 3 is installed. The steel ball 4
Are penetrated into the wire separation groove 5, and a part of the steel ball 4 protrudes toward the wire separation groove 5 side.

The wire detachment prevention plate 7 is attached with a set screw 12 so that one end of the plate-like member can be rotated near the intersection of the wire fixing groove 6 and the outer periphery of the clamp body 1. . In addition, the wire detachment prevention plate 7
If the wire disconnection prevention plate 7 does not receive a force larger than the force for expanding and contracting the spring 3, the wire 3 does not rotate. The repulsive force exerted on the steel ball 4 by the spring 3 can be adjusted by rotating the adjustment bolt 2.

Next, the operation of this embodiment will be described.
FIG. 3 is a front view showing a use state of the wire rope tensioning aid shown in FIG. First, the wire detachment prevention plate 7 is turned in the direction of the arrow in the drawing to open the wire fixing groove 6. And wire 1 used for slinging work etc.
After making 0 into a U-shape and passing it through a roll shaft or the like, one of the wires 10 in the U-shape is positioned in the wire fixing groove 6. Here, the thickness of the wire 10 is substantially the same as or slightly smaller than the groove width of the wire fixing groove 6.
Next, the wire detachment prevention plate 7 is rotated to close the wire fixing groove 6 as shown in FIG.

Then, the other end of the wire 10 in the U-shape is positioned in the wire escape groove 5 as shown in FIG. At this time, the steel ball 4 is pushed by the outer periphery of the wire 10 and is pushed upward in the drawing. Then, since the steel ball 4 compresses the spring 3, the wire 10 is sandwiched and held between the steel ball 4 and the side surface of the wire separation groove 5 by the repulsive force of the spring 3. Thus, by holding two points of the wire 10 slung in a U-shape with the wire rope tensioning aid, the wire is tensioned.

On the other hand, when a wire having a thickness different from the wire width of the wire separation groove 5 and the wire fixing groove 6 by a certain degree or more is used, for example, the φ8 mm wire groove 8 or φ8
The wire can be tensioned by using the millimeter wire groove 9.

FIGS. 4, 5, and 6 show explanatory views of the use state of the wire rope tensioning aid shown in FIG. 1, respectively.
(A) is a front view, and (b) is a side view. First, in FIG. 4, both ends of two wires 10 and 11 are hooked on hooks 31 suspended from a crane (not shown). And wire 1
Numerals 0 and 11 are slung on both ends of the roll shaft 33 around which the rolling roll 32 is wound. But,
As shown in FIG. 4, the wires 10 and 11 are each in a slack state. Therefore, if the hook 31 is lifted with the crane as it is, the wires 10 and 11 may be displaced from the roll shaft or may be displaced.

Therefore, as shown in FIG. 5, the wires 10 and 11 slung on both ends of the roll shaft 33 are tensioned to some extent using the wire rope tensioning aid. Then, the hook 31 is gradually raised by the crane.

When the hook 31 is further lifted by the crane, as shown in FIG. 6, each wire is strongly tensioned. Therefore, in the wire release groove 5 of the wires 10 and 11 sandwiched between the wire rope tensioning aids. The sandwiched wire comes off from the wire release groove 5. Here, the wire sandwiched in the wire fixing groove 6 is still sandwiched in the wire fixing groove 6. This is because the wire detachment preventing plate 7 does not rotate unless the wire detachment preventing plate 7 receives a force larger than the force for expanding and contracting the spring 3. Therefore,
It is possible to prevent the wire rope tension assisting tool from coming off all the wires and hitting an operator or the like.

Thus, the wire rope tension assisting device of the present embodiment can handle three types of wires with one simple tool having a simple structure. Without having to replace
It becomes a convenient wire rope tension aid. In addition, since the wire rope tension assisting device of the present embodiment does not require the wire rope to be equipped with the wire rope tension assisting device in advance, the handling and storage of the wire rope and the wire rope tensioning assisting device after the sling work is completed. Becomes easy.

In this embodiment, the wire rope preventing plate 7 does not rotate unless the wire pulling preventing plate 7 receives a force larger than the force for expanding and contracting the spring 3, so that the wire rope tensioning assist is provided. Although the tool is prevented from coming off the wire, for example, by attaching a string or the like to the clamp body 1 and connecting the string to the wire, the wire rope tension assisting tool comes off from the wire and flies. Can be reliably prevented.

[0027]

As described above, according to the present invention, since a plurality of wire fixing grooves and a plurality of wire release grooves are provided, a simple structure and a plurality of types of wires having different thicknesses are provided. It is possible to provide an easy-to-use wire rope tensioning aid that can handle a rope.

[Brief description of the drawings]

FIG. 1 is a front view showing a wire rope tensioning aid according to an embodiment of the present invention.

FIG. 2 is a plan view of the wire rope tension assisting device shown in FIG.

FIG. 3 is a front view showing a use state of the wire rope tensioning aid shown in FIG. 1;

FIGS. 4A and 4B show a first explanatory view of a usage form of the wire rope tensioning aid shown in FIG. 1, wherein FIG. 4A is a front view and FIG.
Is a side view.

5A and 5B are second explanatory views of a usage form of the wire rope tensioning aid shown in FIG. 1, wherein FIG. 5A is a front view and FIG.
Is a side view.

FIG. 6 is a third explanatory view of a usage form of the wire rope tensioning aid shown in FIG. 1, wherein (a) is a front view and (b)
Is a side view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clamp main body 2 Adjusting bolt 3 Spring 4 Steel ball 5 Wire detachment groove 6 Wire fixing groove 7 Wire detachment prevention plate 12 Set screw

Claims (3)

(57) [Scope of request for utility model registration] 1. A clamp body in which a plurality of grooves are provided on an outer periphery of a disk-shaped member, a spring provided in the clamp body, and a spring provided in the clamp body so as to be movable in a direction in which the spring expands and contracts. A steel ball that is in contact with one end of the spring, and further partially protrudes on the side surface of the wire off-slot that is a part of the plurality of grooves, and a groove that is not the wire off-slot in the plurality of grooves. A wire detaching prevention plate which is a plate-like member having one end rotatably attached to a vicinity of a certain wire fixing groove, wherein one wire detaching groove and one wire fixing groove are paired, and a wire in each pair is provided. The width of the groove between the detachment groove and the wire fixing groove is substantially the same, the width of the groove between each pair is different, and the spring and the steel ball each have one The wire rope tension assisting device, wherein the wire separation prevention plate is provided one by one in one wire fixing groove. 2. The wire rope tensioning assisting device according to claim 1, further comprising an adjusting bolt provided on the clamp body to change a position of an end of the spring opposite to a contact end with the steel ball. And wire rope tension aid. 3. The wire rope tensioning aid according to claim 1, wherein the clamp body is a member made of monocast nylon resin (MONO CAST nylon resin). .