JPH0496613A - Method for building cleat for clamping cable extended in vertical direction - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for assembling a cleat in which a cable extending vertically, such as a rising portion of a steel tower, is clamped and fixed from the side. This is what I am trying to do.

[Conventional technology]

In order to connect the above-ground cable to an overhead power transmission line, the above-ground cable was raised along a steel tower, and its terminal was connected to a cable hend attached to the top of the tower. The cable thus raised is laterally sandwiched by half-split cleats at various points in the vertical extension direction, and is gripped and fixed by tightening bolts and nuts, thereby providing a predetermined intermediate support. In that case, the cleat is installed and fixed on the tower pedestal or the like.

Figures 4 to 6 show conventional cleats used for gripping and fixing cables extended in the vertical direction in this manner.
A receiving side cleat member 2 installed by fastening bolts and nuts to the receiving side cleat member 2 and a holding side cleat member 3 installed opposite thereto.
A bolt 5 is inserted into the flange 3a of the holding-side cleat member 3 via a spring 4, and passes through the flange 2a of the receiving-side cleat member 2, and a bolt 5 protrudes from the flange of the receiving-side cleat member 2. 5 and a nut 6 screwed onto the screw shaft 5. The spring 4 is housed in a cylindrical portion 3b formed to protrude from the flange 3a of the presser side cleat member 3.

In this example, the cable 7 is a CV cable, and a tightening structure using a spring 4 is adopted for the structure of the cable 7.

Thus, the bolt 5 is inserted through the through hole 3C in which the flange 3a is located through the cylindrical portion 3b of the holding side cleat member 3, and further, the bolt 5 is inserted into the through hole 3C in which the flange 3a exists, and further, the bolt 5 is inserted into the through hole 3C where the flange 3a is located.
As shown in FIG. 5, connection between the cleat members 2 and 3 was achieved by inserting the cleat members 2 and 3 through a through hole 2b provided in a flange 2a of the receiving cleat member 2 on the other side.

The cleat having the above structure was assembled in the following manner. That is, first, the side surface of the CV cable 7 extending in the vertical direction is laterally applied to the receiving groove 2c of the receiving side cleat member 2 installed on the steel tower component 1 by fastening with a port nut, and then the holding side cleat member 3 is attached. While facing the receiving cleat member 2, press the CV cable with its own holding groove 3d, and while maintaining this, insert the port 5 from the opening at the tip of the cylindrical part 3b of the holding cleat member 3. Insert the cleat member 3 to pass through the flange 3a of the cleat member 3, and then pass the protruding spiral portion 5a through the flange 2a of the receiving cleat member 2. Screw it on and hold the cleat member 2
．． A position was taken in which the vertically extending CV cable 7 was gripped and fixed by exerting a tightening force of 3 degrees.

Note that the spring 4 is installed in a predetermined manner by setting it in the cylindrical portion 3b before passing the bolt 5 through it, or by inserting it into the port 5 before passing it through.

According to the above-mentioned cleat member, the receiving side cleat member 2
When the holding side cleat member 3 is installed oppositely to the other side, since this member 3 does not have any locking means, it must be held down by hand to prevent it from moving, and the hole through which the bolt is passed must be placed on the other side. It is necessary to hold down the holes of the cleat member 2 while aligning them with the holes in the cleat member 2. In addition to such pressing work, the port 5 and the nut 6, which were carried separately, are separated and are held down. It was necessary to penetrate the port 5 over the space of .3 and screw the napht 6 onto the port 5.

These operations must be performed at the vertical midpoint of the vertically extended cables, that is, at high places with unstable footing, and are difficult and require a lot of time. In addition, as mentioned above, not only the holding-side cleat member 3 but also the bolts 5 and nuts 6 are transported to a high place in separate pieces and assembled as required by clamping cables. Otherwise, there is a high risk that the entire device may fall, which is not desirable from a safety standpoint.

The present invention is an attempt to solve the problems of the prior art described above, and is to assemble a vertically extended cable by sandwiching it from the side with a half-split cleat and tightening a port nut. In this case, the series of assembly and gripping and fixing work performed while pinching the cable can be done in a very simple manner and in a short time, as it is essentially the same as handling a single item, and it also prevents parts from falling. The purpose is to provide a method for assembling this type of cleat in which this type of cleat is unlikely to occur.

[Means to solve the problem]

In order to achieve the above object, the cleat assembly method of the present invention includes: a receiving cleat member that is installed and fixed in advance;
A groove that opens upward in the vertical extension direction of the cable is formed in its own flange, and the flange of its own A bolt to be inserted into the cleat member and a nut to be screwed onto the bolt are set in advance, and the bolt thus set is inserted into the groove in the flange of the receiving side cleat member with the bolt still screwed into the cable. By inserting the cleat member from the vertically extending direction of the cleat member, the presser side cleat member is connected to the receiver side cleat member, and further, a predetermined tightening is performed.

[Effect]

According to the method for assembling a cleat according to the present invention, the bolt set in the holding side cleat member is inserted into the groove formed in the flange of the receiving side cleat member through the upper opening thereof while the bolt is attached to the nut screwed onto the bolt. By inserting the cable along the vertical extension direction, it is possible to connect both cleat members without disassembling the bolt/nut, and by inserting the bolt with the nut still screwed, the holding side cleat member can be connected. While the cable is hooked to the receiving cleat member, the cable can be pressed from the side, and then the tightening work can be started immediately.

[Embodiment] Figures 1 to 3 show an embodiment of the present invention of a method for assembling a cleat to a cable extending in the vertical direction.

Note that this embodiment is directed to a CV cable and uses a cleat with a spring.

Note that this kind of REIT is made of aluminum alloy (A'
It can be easily handled by manufacturing it from a light metal material such as C-7A).

However, it may be made of other metal materials such as stainless steel (SO5304). In that case, the weight can be reduced by reducing the thickness of the cleat itself.

Thus, the cleat consists of a receiving side cleat member 20 installed on a member 10 such as a steel tower by tightening bolts and nuts, and a holding side cleat member 30 disposed opposite to the receiving side cleat member 20.
In order to be able to proceed with the assembly work with only one of the presser side cleat members 30, the presser side cleat member 30 includes a coil-like spring 40,
The bolts 50 and nuts are set in advance.

The receiving side cleat member 20 has an opening 23 in the upper edge surface of the flanges 22 and 22 that protrude on both sides of the approximately semicircular cable receiving groove 21 during installation.
A suitable groove 24 is formed which is dug along the direction in which the cable 70 passes, that is, the vertical direction. Such grooves can be formed when manufacturing the cleat member.

The receiving side cleat member 20 is installed on the member 10 by tightening bolts and nuts prior to starting the cable so that it can receive the raised cable 70 from the side.

On the other hand, the presser-side cleat member 30 has a flange 3232 extending on both sides of the approximately semicircular presser groove 31.
A through hole 33 is bored, and a cylindrical portion 34 is formed protruding from one side thereof. Then, the spring 40 is loaded into the cylindrical portion 34, and the bolt 50 is inserted through the open end of the cylindrical portion 34, passing through the spring 40, and further through the through hole 33 of the flange 32. Further, a nut 60 is screwed onto the threaded shaft portion 51 of the bolt protruding from the flange 32. In this way, a series of tightening parts is set on the holding side cleat member 30, for example, on the ground side before assembly thereof. It is.

Now, the cleat with each part configured as described above is
The raised cable 70 is laterally applied to the receiving groove 21 of the receiving cleat member 20 that has been installed in advance as described above, and the holding cleat member 30 with the tightening parts set therein is attached to the receiving groove 21 of the receiving cleat member 20 installed in advance as described above. It is positioned above the member 20 along the vertical extension direction of the cable (see FIG. 1). At this time, na/to5
0 is set back to the tip of the helical shaft portion 51.

Following this state, while lowering the holding side cleat member 30 along the vertical extension direction of the cable 70, the helical shaft portion 51 of the bolt protruding from the flange 32 is attached to the flange of the receiving side cleat member 20 as shown in FIG. Insertion into the groove 24 is performed by pushing it into the groove 24 of the upper opening in 22 from the upper opening 23 thereof. As a result, the nut 60 is positioned on the rear side surface of the flange of the receiving cleat member 20, and the bolt 50 is prevented from coming out of the groove 24. The connection of the side cleat members 30 is achieved.

Holder side cleat member 30 connected as described above
Immediately thereafter, the nut is rotated relative to the bolt 50, thereby compressing the spring 40 and tightening it to a predetermined value.

In addition, although the above embodiment was directed to a method of assembling a cleat to a cable set up on a steel tower, the present invention is not limited thereto.

For example, vertical extension of cables may also occur in the case of laying underground shafts, and the method of the present invention can also be applied to this case.

Moreover, the "vertical direction" is not limited to the vertical direction, but may also include the case of an inclined rise.

〔Effect of the invention〕

As described above, according to the method of the present invention, the cable is assembled by sandwiching the vertically extending cable between halved cleats from the lateral direction and tightening bolts and nuts. The series of assembling and gripping and fixing operations performed while sandwiching the parts are essentially the same as handling individual parts, making it possible to perform them in an extremely simple manner and in a short time, and making it difficult for parts to fall. The objectives of the project have been achieved, and there are some products with excellent workability and safety.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the method of the present invention, FIG. 1 is a front explanatory view showing how the cleat member is assembled, and FIG. 2 shows how to insert the bolt into the receiving cleat member. The side view and FIG. 3 are plan views showing the assembled state. 4 to 6 show examples of conventional cleat assembly, with FIG. 4 being a front explanatory view showing the cleat assembling state, and FIG. FIG. 6 is an explanatory bottom view showing the cleat assembled state. In the figure, 10 is a steel tower component, 20 is a receiving cleat member, 21 is a receiving groove, 22 is a flange, 23 is an opening, 24 is a groove, 30 is a receiving cleat member, 31 is a holding groove, 32 is a flange, and 33 is a groove. Through hole, 34 is a cylindrical part, 40 is a spring, 5o is a bolt, 51 is a screw shaft part, 60 is a nut, 7
o is a cable. Add 1 Megumi 2 Megumi 3 Figure 32 B'3

Claims (2)

[Claims] (1) A method of assembling half-split cleat members that sandwich the vertically extended cable from the sides using bolts and nuts, in which the upper and lower cables are attached to the flanges of the receiving cleat member itself, which has been installed and fixed in advance. A groove that opens upward in the extension direction is formed, and a bolt inserted into the flange of the holding side cleat member that presses down the cable by being placed opposite to this receiving side cleat member is screwed into the bolt. A nut is set in advance, and the preset bolt is inserted into the groove in the flange of the receiving cleat member from the vertical extension direction of the cable with the nut still screwed. A method for assembling a cleat for gripping and fixing a cable extending in the vertical direction, the method comprising: linking the holding cleat member to the receiving cleat member and further tightening the cleat member in a predetermined manner. (2) The cleat according to claim (1), wherein the cable is a CV cable, and the holding side cleat member has a spring interposed between its own flange and a bolt inserted in advance into the flange. How to assemble.