JP3135453U - Wire end tension receiving structure and wire tension device - Google Patents

Abstract

An object of the present invention is to provide a wire tensioning device for stretching a wire between struts by increasing the range capable of absorbing the error between the support member dimensions and the wire length, and reducing the rotation of the wire during construction to stretch the wire. Improve efficiency.
In a wire tensioning device, a wire end tension receiving structure on a proximal end side includes a mounting cylinder and a ring-shaped adjusting screw. The mounting cylinder 8 has female thread portions on the proximal end side and the distal end side, and the adjustment screw 9 is ring-shaped and can be inserted through the wire 4 and can be screwed into the distal thread side female thread portion of the mounting cylinder 8. it can. The female screw portion on the distal end side of the mounting cylinder 8 is longer than the screw portion of the adjustment screw 9, and the position of the adjustment screw 9 can be adjusted in the axial direction of the mounting cylinder 8 by screwing. A thrust bearing 11 is interposed between the end hardware 10 and the adjusting screw 9.
[Selection] Figure 2

Description

  The present invention relates to a tension receiving structure for attaching an end of a wire to a support member such as a support and a tension structure for a wire using the tension receiving structure.

  In the thread-type wire tension structure (Patent Document 1), when a wire is stretched between support members such as support columns, the wire cut to the dimension between the support members is used at one end (base end) at the factory. As the end metal fitting for engagement, a wire having a screw member fixed to the other end (tip) is used. That is, the wire in the thread type wire-stretching structure is carried to the site in a state where the dimension from the base end to the tip end is determined. At the site, the end hardware is engaged with the support member on the base end side, and the screw member on the tip end is screwed onto the support member on the tip end side, but the dimensions between the support members are often not properly constructed.

  In this case, when the screw member on the tip side is screwed into the female screw member of the tip side support member, the amount can be adjusted to absorb the dimensional error and the wire can be tensioned to the designed value. However, the range that can be adjusted is usually about 20 mm, and adjustment is no longer possible beyond this range, so the wires that are adapted to the dimensions between the support members must be transported again from the factory. The period becomes longer.

  In addition, in the case of a wire with a thread-type wire tensioning structure, a screw wire is designed so that the screw member on the tip side is screwed into the female screw member of the tip side support member while rotating the wire between the base side support member and the tip side support member. Therefore, it is necessary to make the end hardware rotatable with respect to the support member on the base end side so that unnecessary twisting does not remain in the wire. In the wire-stretching structures described in Patent Document 1 and Patent Documents 2 and 3, this is solved by using a structure in which the end hardware can easily rotate with respect to the base end side support member (engagement member).

Registered Utility Model No. 3130263 Japanese Patent Laid-Open No. 11-344081 JP 2000-297849 A

  This device increases the range in which the error between the support member dimensions and the wire length can be absorbed in the thread type wire tensioning device, and reduces the rotation of the wire during construction to improve the efficiency of the wire tensioning work. Let's make it an issue.

In the thread type wire tensioning device, the wire tensioning receiving structure on the base end side is provided with a mounting cylinder and a ring-shaped adjusting screw that can be inserted into the wire. The mounting cylinder has female thread portions on the proximal end side and the distal end side, and the adjustment screw is screwed into the distal thread side female thread portion of the mounting cylinder body. The female screw portion on the distal end side of the mounting cylinder is longer than the screw portion of the adjustment screw, and the position of the adjustment screw can be adjusted in the axial direction of the mounting cylinder by screwing.
A ring-shaped adjusting screw is inserted from the base end of the wire, and then the end hardware is fixed to the base end of the wire. The end hardware is housed inside the mounting cylinder, and the adjusting screw is screwed into the female thread portion on the tip end side of the mounting cylinder. And the base end side internal thread part of the cylinder for attachment is screwed and fixed to the attachment screw fixed to the support member side.

  The wire tensioning device fixes one end of the wire to the proximal end side support member by adopting the above tension receiving structure, and connects the other end of the wire to the female screw of the coupling cylinder attached to the distal end side support member. It is configured by screwing a threaded end metal fitting on the tip side. In the tension receiving structure on the proximal end side, a thrust bearing may be disposed between the distal end side surface of the end hardware and the proximal end side surface of the ring-shaped adjusting screw.

In addition to being able to absorb the dimensional error between the wire and the support member by adjusting the screwing amount of the screw member at the tip of the wire into the female screw member of the tip side support member, as in the conventional thread type device, Thus, the configuration is such that the female thread portion on the distal end side of the mounting cylinder is longer than the thread portion of the adjustment screw, and the position of the adjustment screw can be adjusted in the axial direction of the mounting cylinder by screwing. More dimensional errors can be absorbed. Therefore, in the wire adjusting device, the range in which the error between the support member dimensions and the wire length can be absorbed is large.
In the base-side tension receiving structure, the configuration in which the distal end side surface of the end hardware with the proximal end side of the wire fixed to the wire and the proximal end side surface of the adjusting screw are engaged to make the wire easily rotate during construction. Can do.

FIG. 1 shows a wire fence 1 using a thread type wire tensioning device, and wires 4 are stretched in several stages between columns (support members) 2 and 3. Each wire 4 has a support 2 on one side of the support column 2 (base end side) and a support structure 5 on the other end of the support column 3 side (front end side). , 3 is attached and is strained.
The wire tension receiving structure 5 (FIG. 2) includes a base end side mounting screw 7 (mounting screw 7), a mounting cylinder 8, an adjusting screw 9, an end hardware 10, and a thrust bearing 11. The proximal-side mounting screw 7 is a hexagon head bolt (M10 in the embodiment) in the figure, and has a sturdy cap 12 made of stainless steel. In FIG. 2, reference numeral 13a is an insertion hole provided in the column 2, and reference numeral 14 is a spring washer.

In the embodiment, the mounting cylinder 8 is a stainless steel cylinder, and internally threaded portions 15 and 16 are formed on the proximal end side and the distal end side (FIG. 3A). The adjustment screw 9 is a ring-shaped screw having a male screw formed on the outer peripheral surface, and has a tool hook portion 17 (FIG. 3B) on the tip side surface, and allows the base end portion of the wire 4 to be inserted. it can. The adjustment screw 9 can be screwed into the distal end side female thread portion 16 of the mounting cylinder 5.
The screw range S1 of the distal end side female screw portion 16 in the mounting cylinder 8 is longer than the screw range S2 of the adjustment screw 9. Therefore, the position of the adjusting screw 9 can be adjusted in the axial direction P of the mounting cylinder 8 by screwing. In this embodiment, S1 = 30 mm and S2 = 8 mm.

The thrust bearing 11 is configured by sandwiching a polyacetal / copolymer resin ring 19 (thickness 3 mm) between stainless steel washers 18a and 18b (thickness 0.8 mm). The polyacetal copolymer resin is generally called Duracon (registered trademark).
These parts are assembled by inserting the adjusting screw 9 from the base end of the wire 4 at the factory, then inserting the thrust bearing 11 through the wire 4, and inserting the end hardware 10 through the base end of the wire 4. Secure by caulking.
At the site, the base end portion of the wire 4 is inserted into the mounting cylinder 8 together with the end hardware 10 and stored in the mounting cylinder 8, and the adjustment screw 9 is attached to the front end female thread portion 16 of the mounting cylinder 8. Screw together. Then, the mounting cylinder 8 is engaged with the base end portion of the wire 4 by the adjustment screw 9 screwed to the mounting cylinder 8 colliding with the end hardware 10 via the thrust bearing 11.

On the other hand, the fixing screw 7 is temporarily fixed to the support column 2 through the insertion hole 13a formed in the support column 2 on the proximal end side (FIG. 6A).
Next, the mounting cylinder 8 engaged with the base end portion of the wire 4 is lifted, and the female screw 15 on the base end side and the mounting screw 7 are screwed in via the spring washer 14. Thereby, one end of the wire 4 is attached to the support | pillar 2 of the base end side (same b).
The tension structure 6 (FIG. 4) with a threaded end metal fitting in the support column 3 on the distal end side is composed of a distal end side installation screw 20 (an installation screw 20) (hexagon head bolt in FIG. A threaded end hardware 21 fixed to the other end, a coupling cylinder 22, a fastening nut 23, and a security cover 24 are provided.

The threaded end hardware 21 includes a caulking portion 26, a tool hook portion 27, and a screw portion 28. The coupling cylinder 22 has a cylindrical shape with a tool hook portion 29 on the proximal end side, an internal thread 30 is formed inside, and a stopper ring 31 is fitted in an annular groove formed on the outer periphery on the distal end side.
The security cover 24 is the same as the mounting cylinder 8 on the base end side in terms of the aesthetic appearance of the wire fence 1 as a whole, and is a cylinder with both ends open. Moreover, it has the annular engaging groove 32 (FIG. 5) in which the said stopper ring 31 fits in the front end side inner surface.

In assembling these parts, a threaded end metal fitting 21 is inserted into the tip end of the wire 4 at the factory, and is fixed to the tip end of the wire 4 by the caulking portion 26. On the other hand, at the work site, the front end side mounting screw 20 (M10) is inserted into the insertion hole 13b of the support column 3 on the front end side, and the coupling cylinder 22 fitted with the stopper ring 31 is attached with the stopper ring 31 side as the front end side. The screw 20 is screwed and fixed (FIG. 7A).
Next, after inserting the security cover 24 from the distal end of the wire 4, the threaded end hardware 21 is lifted (FIG. 7B), and the threaded portion 28 is screwed into the coupling cylinder 22 from the proximal end side. Thereby, the support | pillar 3 and the wire 4 are couple | bonded and the wire 4 is once stretched between the support | pillars 2 and 3 (FIG. 7C).

  And the tension degree of the wire 4 is adjusted. When the threaded end hardware 21 is rotated on the distal end side of the wire 4, the proximal end side of the wire 4 is easily rotated via the thrust bearing 11, so that the entire wire 4 is rotated, and at the same time, the distal end side support 3. On the other hand, the threaded end hardware 21 approaches and the wire 4 is tensioned. When the tension of the wire 4 increases and the rotation of the threaded end hardware 21 becomes heavy, the tool hook 27 of the threaded end hardware 21 is rotated using a tool.

  When the tension of the wire 4 is achieved to the design value, the fastening nut 23 is tightened to the coupling cylinder 22 side to fix the position of the threaded end hardware 21 with respect to the coupling cylinder 22. Then, the crime prevention cover 24 is moved to the support column 3 side, and the stopper ring 31 disposed at the tip of the coupling cylinder 22 is fitted into the annular engagement groove 32 located on the inner periphery of the tip of the crime prevention cover 24 to thereby prevent the crime prevention. The cover 24 is engaged with the coupling cylinder 22 (FIG. 7D). Finally, after thoroughly inspecting the entire wire fence 1 after installation, if there are no deficiencies, the mounting screws 7 and 20 (hexagonal head bolts) are exposed at the proximal end and distal end support posts 2 and 3. Fit the stainless steel cap 12 on the head and make it impossible to remove. Thereby, the tensioning device for the wire 4 is completed.

  In the step of adjusting the tension of the wire 4 before attaching the cap, if the adjustable amount of only the threaded end hardware 21 at the tip of the wire cannot provide sufficient tension, the thread is once threaded. The end hardware 21 and the fastening nut 23 are reversely rotated to loosen the wire 4, and on the proximal end side of the wire 4, the mounting screw 7 is reversed to remove the mounting cylinder 8 from the column 2. Next, the adjustment screw 9 that engages the end hardware 10 is turned to move the position relative to the mounting cylinder 8 to the base end side for adjustment. After the adjustment, the base end side of the mounting cylinder 8 is mounted to the mounting screw 7 via the spring washer 14. As a result, the degree of slack before tension of the wire 4 is adjusted to some extent, and the threaded end hardware 21 on the distal end side of the wire 4 is rotated again to tension the wire 4 to the design value. Then, the fastening nut 23 is screwed in the direction of the coupling cylinder 22 to fix the state. The amount that can be adjusted on the base end side is about 10 mm in each of the front and rear in this embodiment, and is about 20 mm in total.

As for the adjusting screw 9, after the mounting cylinder 8 is removed from the mounting screw 7 as described above, the tip of the screwdriver is inserted into the tool hooking portion 17 on the leading end surface of the adjusting screw 9, and the mounting cylinder 8 is fixed. It can be easily adjusted by rotating the.
After the wire fence 1 is completed, the mounting cylinder 8 that is strongly screwed into the mounting screw 7 via the spring washer 14 has no tool hook on the outer periphery of the mounting cylinder 8, and the outer peripheral surface is a smooth surface. Even if you try to rotate with mischief, you can not remove it because the hand slips.

In this way, even if there is a relatively large error in the length of the wire 4 and the dimension between the columns 2 and 3, the wire 4 can be stretched by absorbing this. Because of the small errors that cannot be handled on site, the frequency with which the construction period is extended in search of an appropriate length of wire can be greatly reduced.
When adjusting the tension of the wire 4, if the tension increases, the rotation of the end hardware 10 tends to be transmitted to the adjusting screw 9 on the base end side. As described above, the polyacetal copolymer resin ring 19 is sandwiched between the stainless steel washers 18a and 18b, and the frictional force is extremely small, so that the adjusting screw 9 is not rotated.

The embodiment has been described above.
In the embodiment, the base-side mounting screw 7 and the distal-side mounting screw 20 are hexagon head bolts, but this is the case where the columns 2 and 3 are the ends of the wire fence 1. When the struts 2 and 3 are intermediate struts in the wire fence 1 of this embodiment, it is possible to use full threaded rods 7a and 20a and nuts 33 as shown in FIGS. it can. The entire threaded rod 7a is attached to the support column 2 by sandwiching the support column 2 between the nut 33 and the mounting cylinder 8 to be screwed thereto, and the entire threaded rod 20a is coupled to the coupling cylinder 22 and the nut to be threaded therein. The column 3 is attached to the column 3 by sandwiching the column 3 with 33 (FIG. 9A) or the second mounting cylinder 25 (FIG. 9B). Reference numeral 34 denotes a stainless nut cover, which is fitted into the nut 33 exposed in the columns 2 and 3 and struck. This is used for preventing mischief and aesthetics to loosen the nut 33.

The adjustment amount on the base end side can be appropriately set depending on the length of the front end side female screw portion 16 in the mounting cylinder 8.
In the embodiment, the tip end side of the wire 4 is connected by the coupling of the threaded end hardware 21 and the coupling cylinder 22, but the side of the threaded end hardware 21 is an internal thread and corresponds to the coupling cylinder 22. A structure in which the side is a male screw can also be used. In this sense, the threaded end hardware 21 is a threaded end hardware including male and female.
In the embodiment, the wire fence 1 is configured to have a structure in which the tip side is stretched with a threaded end hardware, but the tension structure on the tip side may be a structure that does not use a threaded end hardware.

The front view of a wire fence. The front view by the cross section which showed the attachment structure in the base end side of a wire. (A) is a front view of a cross-section showing an exploded mounting structure on the proximal end side of the wire, and (b) is a perspective view of an adjusting screw. The front view by the cross section which showed the attachment structure in the front end side of a wire. The front view by the cross section which decomposed | disassembled and showed the attachment structure in the front end side of a wire. (A) and (b) are front views for explaining a mounting procedure on the base end side. (A) to (i) are front views for explaining a mounting procedure on the tip side. The front view of the base end side in another Example. (A) and (b) are front views of the tip side in another embodiment.

Explanation of symbols

1 Wire fence 2 Strut (support member)
3 Prop (support member)
4 Wire 5 Wire tension receiving structure 6 Tension structure with threaded end hardware 7 Base end side mounting screw 7a Full thread bar 8 Mounting cylinder 9 Adjustment screw 10 End hardware 11 Thrust bearing 12 Stainless steel cap 13a Insertion hole (base end) side)
13b Insertion hole (tip side)
14 Spring washer 15 Female thread (base end side)
16 Female thread (tip side)
17 Tool holder 18 Stainless steel washer 19 Resin ring 20 Tip side mounting screw 20a Full thread bar 21 Threaded end hardware 22 Coupling cylinder 23 Fastening nut 24 Security cover 25 Second mounting cylinder 26 Caulking section 27 Tool hook Department (end hardware)
28 Screw part 29 Tool hanging part (Cylinder for connection)
30 Female thread 31 Stopper ring 32 Annular engagement groove 33 Nut 34 Nut cover

Claims (5)

  An end metal fitting at the end of the wire is attached by being engaged with the support member, and includes a mounting cylinder that can accommodate the end hardware and a ring-shaped adjustment screw that can be inserted into the wire. Female threads are formed on the end side and the tip side, and the adjustment screw has a male thread formed on the outer peripheral surface and can be screwed into the female thread part on the tip side of the mounting cylinder. The internal thread is longer than the thread of the adjustment screw, and the position of the adjustment screw can be adjusted in the axial direction of the mounting cylinder by screwing in. The adjustment screw is inserted from the base end of the wire, and then the end hardware is inserted into the wire. Fixing to the base end, storing the end hardware inside the mounting cylinder, screwing the adjustment screw into the front female thread on the mounting cylinder, and further, the proximal female thread on the mounting cylinder Fixed to the support member side Zhang 設受 only structure of wire ends which is characterized in that attached is fixed screwed to the screw.   2. The wire end portion tension receiving structure according to claim 1, wherein a thrust bearing is sandwiched between a distal end side surface of the end hardware and a proximal end side surface of the adjusting screw.   3. The wire end stretch receiving structure according to claim 2, wherein the thrust bearing has a structure in which a polyacetal copolymer resin ring is sandwiched between two stainless steel washers.   A threaded end metal fitting is fixed to the distal end side of the wire, and the screw is screwed into a female thread of a coupling cylinder attached to the distal end side support member, and the proximal end side of the wire is set to any one of claims 1 to 3. A wire tensioning device which is attached to a proximal end side support member with the tension receiving structure described in claim 1.   A stopper ring is mounted near the distal end side support member of the coupling cylinder, and includes a cylindrical crime prevention cover that can cover at least the range of the coupling cylinder from the distal end portion of the threaded end metal fitting. The wire tensioning device according to claim 4, wherein the wire tensioning device is attached by being engaged with the stopper ring.

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