JP4521593B2 - Simple arm for transmission tower - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a simple arm for a power transmission tower that can be attached freely to a power transmission tower regardless of the width, height, and scale of the steel tower and is easy to transport and store.
[0002]
[Prior art]
Conventionally, a temporary arm temporarily attached has been used to temporarily fix a transmission line during construction or modification of a power transmission tower. However, since the transmission towers have different widths and heights, temporary arms have been designed and manufactured for each tower. For this reason, the temporary arm once used cannot be used for other steel towers after the completion of construction, and is often discarded.
[0003]
However, the temporary arm to be discarded is not discarded due to the strength problem, and there are many cases where there is no problem even if it is used again. For this reason, it has been a resistance to discard a temporary arm that has been used only once. Nevertheless, storing a temporary arm that is unlikely to be used in the future requires a storage location and storage cost, and is economically problematic.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of such problems of the prior art, and the arm used in the transmission tower can be used in accordance with various tower widths and panel heights, and can be easily used. A simple arm structure that can be disassembled and assembled, is lightweight, compact, and easy to transport and store.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the simple arm for a power transmission tower according to the present invention has a pair of arm main members with the tips of the respective steel plates that are joined to the corresponding steel plates and coincide with the axial extension of each arm main material. Bolt holes into which main bolts that can open and close both steel plates are inserted at arbitrary positions, and longitudinal ribs are welded to each steel plate in the longitudinal direction of each steel plate, and the tip of each suspension member is connected to each rib. Two units consisting of the arm main material and the corresponding suspension material and steel plate are prepared symmetrically by joining with one suspension material bolt, and the main unit of the steel plate of the two units is prepared. Overlapping bolt holes, joining with one main bolt, using the main bolt as a fulcrum, adjusting the angle formed by the two units according to the tower width, and using the suspension bolt as a fulcrum, Match the mounting angle of the suspension to the panel height. And adjusted by the rear end portion of the arm main member and Tsuzai units two-body is characterized in that it is attached to the tower.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
FIG. 1 is a perspective view of a simple arm. The simple arm is formed by joining the ends of a pair of symmetrical units A and B with a single bolt 5, which will be described in detail later.
[0007]
FIG. 2 is a plan view of the arm main material 2 and the steel plate 1 of the simple arm as viewed from above. 1 and 2, each unit A, B is composed of an arm main member 2, a suspension member 4 and a steel plate 1 provided correspondingly, and the arm main member 2 and the tip of the suspension member 4 are The steel plate 1 is bolted. The arm main material 2 is composed of one or two angle steels, and the tip of the arm main material is joined to the angle main steel of the arm main material and the steel plate 1 by a plurality of bolts 6. The steel plate 1 is provided with a bolt hole into which the main bolt 5 is inserted at an arbitrary position on the axial center extension line of the arm main material 2, and a longitudinal rib 3 for supporting the suspension material 4 is provided in the longitudinal direction of the steel plate 1. It is welded to. The length of the rib 3 in the longitudinal direction is adjusted so that the pair of units A and B can be opened and closed with the bolt 5 as a fulcrum. In addition, the angle steel of the arm main material and the steel plate 1 may be joined by welding. In addition, the steel plate 1 is provided with a necessary number of holes for attaching a wire.
[0008]
FIG. 3 is a side view of the simple arm. Bolt holes into which the suspension material bolts 7 are inserted are formed in the longitudinal ribs 3 welded to the steel plate 1, and are joined to the front ends of the suspension materials 4 by the suspension material bolts 7. At this time, since the suspension member 4 is joined by one suspension member bolt 7, the attachment angle of the suspension member 4 can be changed with the suspension member bolt 7 as a fulcrum, and the panel height D (FIG. 4) of the different towers. The angle of attachment of the suspension member can be easily changed with respect to the reference).
[0009]
The simple arm units A and B shown in FIG. 2 and FIG. 3 are prepared in a symmetrical form for the main bolt 5 provided on the steel plate 1 attached to the tip of the arm main material 2 of each unit A and B. Since the bolt holes are overlapped and joined with one main bolt 5, the angle formed by the units A and B with the main bolt 5 as a fulcrum can be easily changed. It is easy to attach the main arm material. Even when the simple arm is disassembled, the simple arm can be easily disassembled by removing the main bolt 5 that fixes the overlap of the steel plates attached to the tip of the arm main material.
[0010]
FIG. 4 is a diagram showing a state where the power transmission tower is attached to the simple arm. Since the tower width C and the panel height D of the power transmission tower are different for each tower, the simple arm adjusts the angle formed by the units A and B according to the tower width C, and the arm main plate 9 Joined and attached. At this time, since the suspension member 4 of the simple arm does not have a function of adjusting the change in the tower width direction, the change in the bend width direction of the suspension material is designed for each steel tower, and the suspension plate 8 Is attached to the tower.
[0011]
【The invention's effect】
The present invention has the following effects by performing the procedure described above.
[0012]
Since the simple arm is configured as in claim 1, it can be freely attached regardless of the width of the steel tower and the panel height. Further, even when disassembling, it can be easily disassembled simply by removing the bolted part. For this reason, it is possible to quickly and easily attach and detach the simple arm, which is a tower operation, and after the simple arm is disassembled, it is lightweight and compact, so it can be easily transported and stored in a small space.
[Brief description of the drawings]
FIG. 1 is a perspective view of a simple arm.
FIG. 2 is a plan view of a simple arm.
FIG. 3 is a side view of a simple arm.
FIG. 4 is a view showing how a simple arm is attached.
[Explanation of symbols]
A Unit A
B Unit B
C Tower width D Panel height 1 Steel plate 2 Arm main material 3 Rib 4 Suspension material 5 Main bolt 6 Bolt 7 Suspension material bolt 8 Suspension material plate 9 Arm main material plate

Claims (1)

In the simple arm attached to the power transmission tower, the ends of the pair of arm main members (2) and (2) are joined to the corresponding steel plates (1) and (1), and coincide with the axial extension of each arm main member (2). Bolt holes into which main bolts (5) that enable both the steel plates to be opened and closed are provided at arbitrary positions of the steel plates (1) to be opened, and longitudinal ribs (3) are provided on the steel plates (1). ) Welded in the longitudinal direction and joined the end of each suspension member (4) to each rib (3) with one suspension member bolt (7), corresponding to the arm main material (2) and this Two units composed of the suspension member (4) and the steel plate (1) provided in a symmetrical manner are prepared, and the main bolt holes of the steel plate (1) of the two units are overlapped, Join with the main bolt (5) and use the main bolt (5) as a fulcrum to set the angle between the two units to the tower width. And adjusting the mounting angle of the suspension material (4) according to the panel height, using the suspension material bolt (7) as a fulcrum, and the two main unit arm (2) and suspension A simple arm for a power transmission tower, characterized in that the rear end of the material (4) is attached to the steel tower.

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