Cleat mounting structure

Abstract

To provide a cleat mounting structure for mounting a cleat to an existing member of a steel tower etc., in which a cable held by the cleat has no buckling or twisting and can prevent an accident of insulation breakdown.SOLUTION: A cleat mounting structure for mounting a cleat 3 to a steel tower 1 comprises: elevation / depression angle adjusting means 14, 15, and 40 for adjusting an elevation / depression angle of a cable 2; forward / backward movement adjusting means 14, 14a, 15, and 40 for moving the cable in a horizontal component in an axial direction; left / right movement adjusting means 14, 15, and 40 for moving the cable to the horizontal component in a direction perpendicular to the axial direction; and vertical movement adjusting means 12, 14, and 16 for moving the cable in a vertical direction.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a cleat mounting structure for mounting cleats to existing members such as steel towers. [Background technology]

[0002] In order to connect the ground side cable to the overhead power transmission line, the ground side cable is raised along the steel tower and the raised end is terminated to a cable head attached to the top of the steel tower. The raised cable is held by a cleat on the horizontal member of the steel tower.

[0003] Generally, the position of the cleat is fixed to a steel tower or the like, so the cable needs to be adjusted to match the cleat position. Depending on the location and cable position, adjusting the cable can not only take a great deal of effort and time, but it can also be difficult to adjust.

[0004] Patent Document 1 relates to a supported object suspension device that allows adjustment of the fixed position of the supported object relative to a fixed body, and provides a cleat connection part that connects the electric wire gripping fitting (cleat) to a mounting fitting that is attached to a tower component, and by forming a V-shaped bend part with an outer bend angle of 20 to 70° in this connection part, it makes it possible to position the electric wire gripping fitting (cleat) in various directions from the mounting fitting. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 51-9297 Summary of the Invention [Problem to be solved by the invention]

[0006] Incidentally, the supported structure described in Patent Document 1 is intended for relatively light cables, and cannot be used for heavy cables such as those used in steel towers.

[0007] In particular, where the cable is installed and crosses the tower horizontally, there are places where the bending radius of the cable is small, and there are concerns that excessive force will be applied to the cable when adjusting its position relative to the tower, causing buckling or twisting, which could lead to insulation breakdown. In addition, the metal fittings used to attach the cleats need to be adjusted to fit the tower material, and changing these fittings requires detailed design, which is very costly.

[0008] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a cleat mounting structure that can secure a heavy cable used in a steel tower or the like without applying excessive force to the cable. [Means for solving the problem]

[0009] In order to solve the above problems, the invention of claim 1 is a cleat mounting structure for mounting a cleat to an existing member, characterized in that it comprises an elevation / depression angle adjustment means for adjusting the elevation / depression angle of the cable, a front-to-rear movement adjustment means for moving the cable in a horizontal component in the axial direction, a left-right movement adjustment means for moving the cable in a horizontal component in a direction perpendicular to the axial direction, and a up-down movement adjustment means for moving the cable in an up-down direction.

[0010] The invention of claim 2 is characterized in that, in the cleat mounting structure described in claim 1, it has a spindle to which the cleat is attached, which is arranged so as to extend horizontally and perpendicular to the axial direction of the cable, spindle mounting pieces for mounting both ends of the spindle to the existing member, and a U-shaped bolt for attaching the spindle to the spindle mounting piece, wherein the elevation / depression angle adjustment means is achieved by loosening the U-shaped bolt and rotating the spindle in an axial direction, and the left / right movement adjustment means is achieved by loosening the U-shaped bolt and moving the spindle in the axial direction.

[0011] The invention of claim 3 is the cleat mounting structure of claim 2, wherein the bolt holes formed in the support shaft mounting pieces and through which the U-bolts pass are formed as elongated holes, and the front and rear can be adjusted by loosening the U-bolt and moving the U-bolt within the elongated holes. move The adjustment means is characterized by:

[0012] The invention of claim 4 is the cleat mounting structure of claim 2 or claim 3, wherein the shaft mounting piece is attached via a U-bolt to a vertical member extending in the up-down direction of the existing member, and the shaft mounting piece is fixed to the existing member by tightening the U-bolt, and the shaft mounting piece is moved in the up-down direction by loosening the U-bolt to move the shaft mounting piece in the up-down direction. move The adjustment means is characterized by: Effect of the Invention

[0013] According to the invention of claim 1, the cleat that holds the cable can be moved up and down, left and right, and forward and backward relative to an existing component such as a steel tower, and the angle of the cleat, i.e., the elevation and depression angle of the cable, can be adjusted.Therefore, the cleat can be adjusted up and down, left and right, front and rear, and the elevation and depression angle while holding the cable to a certain extent, so that undue force is not applied to the cable, buckling or twisting does not occur in the cable, and insulation breakdown accidents can be prevented.

[0014] In addition, in the past, various metal fittings were used to determine how the cleats were attached to the tower, but with the present invention, such metal fittings are not necessary, and the load on the cable can be reduced by simply adjusting the position of the cleat relative to the existing member.

[0015] According to the invention of claim 2, the invention comprises a spindle to which the cleat is attached, extending horizontally and perpendicular to the axial direction of the cable, spindle mounting pieces for attaching both ends of the spindle to the existing member, and a U-bolt for attaching the spindle to the spindle mounting piece.Since the cleat is attached to this spindle, the elevation and depression angle of the cable can be easily adjusted by rotating the spindle around its axis, and the left-right position of the cable can be easily adjusted by moving the spindle in the axial direction.

[0016] Furthermore, since the support shaft is attached to the support shaft mounting piece by means of a U-bolt, tightening and loosening can be carried out simply and reliably, and the position of the cable can be easily adjusted.

[0017] According to the invention of claim 3, the bolt hole formed in the shaft mounting piece and through which the U-bolt passes is made an elongated hole, so that the shaft can be easily moved in the forward / backward direction by loosening the U-bolt.

[0018] According to the invention of claim 4, the shaft mounting piece is attached to a vertical member extending in the vertical direction of the existing member via a U-shaped bolt, and the shaft mounting piece can be fixed to the existing member by tightening the U-shaped bolt, and the shaft mounting piece can be moved in the vertical direction by loosening the U-shaped bolt, making it possible to easily adjust the vertical position of the cable. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is an overall perspective view of a steel tower to which the present invention is applied. [Diagram 2] 3 and 4 show a cleat mounting structure according to an embodiment of the present invention, and this figure is a side view of the main part of the tower. [Diagram 3] FIG. 2 is a front view of the main part of the tower. [Figure 4] FIG. 2 is a plan view of the main parts of the tower. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] FIG. 2 is a perspective view of the cleat mounting structure as viewed obliquely from behind the cleat. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The present invention will now be described with reference to the accompanying drawings.

[0021] (Embodiment) A steel tower 1 to which the cleat mounting structure according to this embodiment is applied is composed of a main column member 10, horizontal members 11, diagonal members, cross arms, as well as auxiliary members.

[0022] In order to connect the ground-side cable 2 to an overhead power transmission line (not shown), the ground-side cable 2 is set up along the main pole member 10 of such a steel tower 1, and the set-up terminal is terminated and connected to a cable head (not shown) attached to the top of the steel tower 1. The set-up cable 2 is held in place by cleats 3 attached to the horizontal members 11 of the steel tower 1, etc.

[0023] The areas within the tower 1 where buckling and twisting of the cable 2 become an issue are mainly the points where the cable 2 crosses the tower 1 horizontally, so in this embodiment, an example of applying the present invention to those points will be described.

[0024] Fig. 1 is a perspective view showing the entire tower 1. As can be seen from Fig. 1, cable 2 is erected from the ground along one outer surface of tower 1, crosses tower 1 horizontally at a height of about half of its total height, and is erected along the outer surface on the opposite side.

[0025] 2 to 4 show the structure of the portion where cable 2 crosses horizontally inside tower 1.

[0026] Fig. 2 is a side view, in which cable 2 extends from below in a nearly vertical direction along one outer surface, then turns horizontally at that point, and then turns nearly vertically to run along the opposite outer surface. Note that the horizontal and diagonal members are omitted in Fig. 2.

[0027] The cable 2 is held by the cleat mounting structure of this embodiment as it changes orientation from vertical to horizontal and from horizontal to vertical.

[0028] Note that the two cleats 3 are positioned at slightly different heights, but this is because the width of the tower 1 at that location (the length that the cable 2 crosses the tower 1) is relatively short; if the length is sufficient, the height of the cleat 3 on the entrance side and the cleat 3 on the exit side will be approximately the same.

[0029] At the point where the cable 2 crosses horizontally within the tower 1, there are horizontal members 11 on all four sides, and two vertical members 12 extending vertically along the outer surfaces of the inlet and outlet sides of the cable 2 are provided.

[0030] Cleats 3 are disposed near the inlet and outlet sides of the cable 2, at positions slightly higher than the horizontal members 11.

[0031] The cleat 3 comprises a foot plate 30 which is attached to the horizontal member 11 of the tower 1 or other auxiliary members or mounting pieces, and a holding part 31 which holds the cable 2.

[0032] The holding portion 31 has a semicircular receiving portion 32 and a semicircular pressing portion 33 that moves toward and away from the receiving portion 32, and the receiving portion 32 and the pressing portion 33 are joined together to form a cylindrical shape that holds the cable 2. The receiving portion 32 and the pressing portion 33 are provided with flanges 32a, 33a, and communication holes are provided in the flanges 32a, 33a. A bolt 34 is inserted into the communication hole and fastened to form the holding portion 31 in which the receiving portion 32 and the pressing portion 33 are integrated.

[0033] Further, a cylindrical body 35 is formed integrally with the flange 33a of the pressing portion 33, and this cylindrical body 35 has a built-in spring (not shown) so as to elastically contact the held cable 2 when the receiving portion 32 and the pressing portion 33 are tightened with the bolt 34 (see Figures 5 to 7).

[0034] The cleat 3 has an L-shaped cleat fixing piece 41 to which the foot plate 30 is fixed by bolting.

[0035] This cleat fixing piece 41 is fixed to the peripheral surface of the support shaft 40 by welding or the like, and is oriented so that the axis of the support shaft 40 and the extension direction of the cable 2 held by the cleat 3 are perpendicular to each other.

[0036] The support shaft 40 is attached to support shaft attachment pieces 14 having L-shaped ends by U-bolts 15 .

[0037] The bolt hole into which the U-bolt 15 of the shaft attachment piece 14 is inserted is formed in the elongated hole 14a.

[0038] Flanges 40a are provided on both ends of the support shaft 40, so that the support shaft 40 is prevented from coming off when placed on the support shaft mounting piece 14 before or during installation of the U-bolt 15.

[0039] The two support shaft mounting pieces 14 are provided at a position slightly higher than the horizontal member 11, with one end protruding outward from the steel tower 1, and the protruding portion is attached to the vertical member 12 by a deformed U-bolt 16. A deformed U-bolt is a bolt that is bent in the center like a U-bolt, with both ends parallel and threaded, and is called a deformed U-bolt because the bent portion is not U-shaped. In this embodiment, the center is bent into a triangular shape in order to be attached to the vertical member 12 consisting of an L-angle.

[0040] One end of each of the two support mounting members 14 is attached to the vertical member 12, and the two support mounting members 14 are arranged so as to extend inward in a parallel and substantially horizontal manner.

[0041] After the cable 2 is held by the cleat 3 in the cleat mounting structure constructed in this manner, the respective positions can be adjusted as follows.

[0042] First, the U-bolts 15 that secure the support shaft mounting pieces 14 are loosened, so that the support shaft 40 becomes rotatable on the two support shaft mounting pieces 14 and also movable in the axial direction.

[0043] As described above, the cleat 3 is attached to the support shaft 40 in a direction in which the extension direction of the held cable and the axis of the support shaft 40 are perpendicular to each other, so that the rotation of the support shaft 40 serves as an elevation / depression angle adjustment means for adjusting the elevation / depression angle of the cable 2. Therefore, the elevation / depression angle adjustment means is composed of the support shaft mounting piece 14, the U-bolt 15, and the support shaft 40.

[0044] In addition, while the U-bolt 15 is loosened, the movement of the support shaft 40 in the axial direction serves as a left-right movement adjustment means for adjusting the left-right position of the cable 2. Therefore, the left-right movement adjustment means is composed of the support shaft attachment piece 14, the U-bolt 15, and the support shaft 40. Furthermore, since a bolt hole through which the U-bolt 15 passes is formed in the elongated hole 14a, when the U-bolt 15 is loosened, the U-bolt 15 and the support shaft 40 become movable in the elongated hole direction, that is, in the direction in which the cable 2 extends (front-rear direction), and serve as a front-rear movement adjustment means for adjusting the front-rear position. Therefore, the front-rear movement adjustment means is composed of the support shaft attachment piece 14, the elongated hole 14a, the U-bolt 15, and the support shaft 40.

[0045] Furthermore, by loosening the deformed U-bolt 16 that attaches the shaft mounting piece 14 to the vertical member 12, the shaft mounting piece 14 moves in a direction along the vertical member 12, i.e., in the vertical direction, thereby serving as a vertical movement adjustment means for adjusting the vertical position. Thus, the vertical movement adjustment means is composed of the vertical member 12, the shaft mounting piece 14, and the deformed U-bolt 16.

[0046] Thus, according to the present invention, even when a relatively heavy cable is fixed to an existing component such as a steel tower, because the position of the cleat is not fixed, the cable held by the cleat is less likely to be subjected to load, and even if load is applied to the cable, the load can be easily reduced by adjusting the position of the cleat.

[0047] Furthermore, since the cleats and other mounting pieces are attached to existing members using U-bolts, they can be easily tightened and loosened.

[0048] Although the embodiments of the present invention have been described above, the specific configuration is not limited to the above-described embodiments, and even if there are design changes and the like within the scope of the gist of the present invention, they are included in the present invention.

[0049] For example, in the above embodiment, a steel tower was described as an existing member on which a cable is to be installed, but the present invention is not limited to this and can also be applied to cables used for underground power lines. [Explanation of symbols]

[0050] 1 Steel tower (existing components) 2 Cable 3 Cleats 10 Pillar main material 11 Horizontal material 12 Vertical members 14 Support shaft mounting piece 15 U-bolt 16 Irregular U-bolt (U-bolt) 14a long hole 40 Spindle 14, 15, 40 Elevation / depression angle adjustment means 14, 14a, 15, 40 Back and forth movement adjustment means 14, 15, 40 Left and right movement adjustment means 12, 14, 16 Vertical movement adjustment means

Claims

1. A cleat mounting structure for mounting a cleat to an existing member, comprising: An elevation / depression angle adjusting means for adjusting the elevation / depression angle of the cable; a forward / backward movement adjustment means for moving the cable in a horizontal component in an axial direction; a left-right movement adjustment means for moving the cable in a horizontal component in a direction perpendicular to the axial direction; and a vertical movement adjustment means for moving the cable in the vertical direction. A cleat mounting structure comprising:

2. a support shaft provided so as to extend in a horizontal direction and perpendicular to the axial direction of the cable, and to which the cleat is attached; a support shaft attachment piece for attaching both ends of the support shaft to the existing member; a U-bolt for attaching the support shaft to the support shaft attachment piece, The U-bolt is loosened and the support shaft is rotated in an axial direction to form the elevation / depression angle adjustment means; In addition, the left-right movement adjustment means is configured by loosening the U-bolt and moving the support shaft in the axial direction.

2. The cleat mounting structure according to claim 1.

3. The bolt hole through which the U-bolt passes is formed as an elongated hole in the shaft attachment piece, The U-bolt is loosened and moved within the long hole to form the front-rear movement adjustment means.

3. The cleat mounting structure according to claim 2.

4. The shaft attachment piece is attached to a vertical member extending in the up-down direction of the existing member via a U-bolt, The U-bolt is tightened to fix the shaft attachment piece to the existing member, The U-bolt is loosened to move the support shaft mounting piece in the vertical direction, thereby forming the vertical movement adjustment means.

4. The cleat mounting structure according to claim 2 or 3.

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