JP2001095116A - Hanging sheave for re-cabling of four-core transmission line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hanging sheave for re-calling of four-core transmission line having reversibility to the outside of transmission line section area. SOLUTION: Cables are coaxially coupled in the upper and lower directions with a coupling axis means including a coupling axis 13 providing at the lower part of a former sheave frame 12 the upper vertical two-wheel metal wheel 11 and the lower vertical two-wheel sheave 14, a coupling wheel 16 providing these metal wheels at the upper part of the latter sheave frame 15, a coupling sleeve 18 having an eccentric weight 21 provided via an arm 20 to be tightened via a bolt 19 to both coupling axes 13, 16 abutted with each other and a clip type hanging sheave coupling rope clamper 17 additionally provided to the adjacent part of one side of the sheave frame 15 and coupling axis 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reversing type suspension system in which four (four conductors) transmission lines, particularly for an ultra-high voltage line, which are laid in parallel with a space left and right and up and down, are turned upside down in right and left. The present invention relates to a hanging wheel used for rebuilding by a metal construction method.

[0002]

2. Description of the Related Art Such four-line transmission lines have been recently constructed, and the initially constructed transmission lines will soon be replaced in terms of the progress of damage, but places where it is difficult to construct protective scaffolds ( In places where it is difficult to use the tension drawing method, such as in urban areas, mountainous areas, rivers, etc., where engine and drum sites are narrow (city areas, mountainous areas, etc.), and where there are live parts. It has been considered that the right and left two upper and lower transmission lines, that is, the upper line and the lower line, are replaced by an inverted suspension method.

[0003]

However, the upper wheel and the lower wheel for the upper suspension and the lower suspension used in the conventional reversing suspension method are connected to the connecting shaft means (the connecting shaft assembly). ), And coaxially (concentrically) connected, and a clip-type hanging wheel connecting rope fastener (clasp) is attached to a portion adjacent to the connecting shaft means and the upper or lower wheel. The vertical double-type hanging truck has the reversibility to the left and right sides, that is, the inside and outside of the transmission line division area, in terms of the substantially left-right symmetrical structure. In the construction of the four transmission lines extending left and right, the inconvenience that the transmission lines become entangled when the hanging wheel is turned upside down on the left and right is expected.

[0004] In view of the above, an object of the present invention is to provide a suspension truck having reversibility outside the transmission line section so that the transmission line is not entangled.

[0005]

A hanging wheel according to the present invention coaxially connects an upper vertical two-wheeled wheel and a lower vertical two-wheeled wheel via connecting shaft means having an eccentric weight (eccentric load block). At the same time, a hanging wheel connecting rope fastener is attached to the connecting shaft means or the adjacent portion of the connecting shaft means of the upper or lower vertical two-wheel wheel or the adjacent portion of the upper or lower vertical two wheel wheel and the connecting shaft means. It consists of a structure, that is, a vertical double structure of a left-right asymmetric type (with eccentric weight).

Here, the amount of eccentricity of the eccentric weight is smaller than the distance between the left and right transmission lines, that is, the upper line, in order to prevent collision between the suspension wheels when the transmission line is suspended and supported on the left and right sides of the transmission line and turned over. Needless to say, it is less than the distance between the lines and the underline.

[0007] Generally, the suspension wheel of the present invention has a plurality of the eccentric weights at the center portion between the diameters of the suspension wheel connecting ropes extending between the respective diameters, and the eccentric weight is provided outside the transmission line section area. , Suspended on the upper and lower lines on the left and right through the upper and lower vertical two-wheeled wheels,
While supporting, on the other part of the hanging wheel connecting rope, while attaching a plurality of left-right substantially symmetrical vertical double-type hanging wheels with no eccentric weight at intervals, through each vertical twin wheel It is installed in the form of a substantially symmetrical type and a side-by-side configuration between each span, such as being suspended and supported on the upper and lower lines.

[0008] The hanging wheel of the present invention has tilting and rotating properties on the eccentric side of the eccentric weight, that is, reversing or reversing biasing force. Therefore, as described above, in a state where the left-right asymmetric type is located at the center and the left-right substantially symmetric type is located at the front and rear portions of each span, the clamps on the left and right upper lines are released, and the tension is relaxed. The upper vertical two-wheel vehicle of the hanging wheel truck according to the present invention starts rotating (reversing) from top to bottom outside the transmission line division area, and in conjunction with this, a plurality of left-right substantially symmetrical vertical double stations other than the center portion. Similarly, the upper vertical two-wheeled vehicle that constitutes the type suspension wheel also rotates downward outside the transmission line division area, and finally the upper and lower sides supported by the underline through all the lower vertical two-wheeled vehicles Conversely, the eccentric weight is located in the transmission line section, resulting in an inverted state in which the upper line extends below the underline.

In this inverted state, the new upper line connected to the upper line is relaxedly extended to each of the upper vertical two-wheeled wheels in the span through pulling out and removing the upper line by the winch, and then tension is applied to the new upper line. In addition, if the line is tightened, the upper vertical two-wheeled vehicle of the suspension wheel of the present invention in the center of the span runs from the bottom up through the outside of the transmission line section due to tilting and rotation due to the eccentric weight located in the transmission line section area. Ascending towards
In conjunction with this, the upper vertical two-wheel vehicle of the left-right substantially symmetrical suspension wheel similarly rises upward, and eventually returns to the normal position.

Thereafter, both ends of the new upper line are temporarily clamped,
After the new upper line is provisionally tightened, the underline is relaxed, the underline is pulled out through the lower vertical two-wheeled vehicle of all left and right substantially symmetrical and asymmetrical suspension wheels, and the new underline connected to the underline is removed. After the extension line and the new underline are tightened and temporarily clamped, and finally, all the suspension trucks are collected through the pulling of the suspension wheel connecting rope, the new upper line and the new underline are fully closed, and then the transmission line Finishing the replacement by attaching a spacer to the space.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a hanging wheel according to an embodiment of the present invention.

FIG. 1 shows an embodiment of a hanging wheel of the present invention, that is, an asymmetrical vertical double-type hanging wheel 10 having a swinging rope opening / closing side frame pieces 12a, 15a. An upper vertical two-wheel wheel 11 and a lower vertical wheel 14 having the wheel frames 12 and 15 are connected to a square connection shaft (connection link) 13 with a bolt hole provided at the lower center of the former wheel frame 12.
The latter has a square connection shaft 16 with bolt holes provided at the upper center of the wheel frame 15, and an eccentric weight 21 fixed to the butting connection shafts 13, 16 via bolts 19 and attached via arms 20. A bolt-type connecting shaft means including a square connecting sleeve 18 with a bolt hole and a clip-type hanging wheel connecting rope fastener 17 attached to one side of the wheel frame 15 and one side of the connecting shaft 16. The eccentric weight 21 is integrally connected to the hanging wheel connecting rope fastener 17 in a state opposite to the eccentric weight 21.

As shown in FIGS. 2 to 12, the hanging wheel 10 includes an eccentric weight 21 and an attachment arm 20.
A suspension tower 32 is interposed between the tension-resistant towers 31 by using a vertically symmetrical vertical double-type suspension wheel 22 having the same structure as the suspension wheel 11 except that the suspension tower 11 is not provided. The four transmission lines 33 (only the upper and lower two lines are shown in each figure) can be replaced in the span.

That is, first, as shown in FIG. 2, the four-strip rider 23 embarks on the power transmission line 33 to remove the four-strip spacer 36, and the guide rope 24 is spaced apart (for example, about 20 to 30 m). The guide rope 24 is extended in the span while the guide rope hanger wheel 25 of a one wheel type with a rope fastener to be attached is mounted on the left and right upper lines 34.

Next, as shown in FIG. 3, while pulling out each of the left and right guide ropes 24 manually or via a small winch in each span, the hanging wheel 22 at first, the hanging wheel 10 in the middle, and the hanging wheel thereafter. In the order of the car 22, a plurality of each of them are connected to the respective guide ropes 24 by the rope joints 26 via the suspension wheel connecting rope fasteners of the both suspension wheels 10, 22.
(For example, about 20 to 30 m) is attached to each of the suspension wheel connecting ropes 27 connected via the cable (in this case, the suspension wheel 10 is mounted so that the eccentric weight 21 occupies a position outside the transmission line section area). By hanging the upper and lower vertical twin wheels 11, 14 on the upper line 34 and the lower line 35,
As shown in FIG. 4, the hanging wheel 10 occupies the center of each span with the eccentric weight 21 positioned outside, and the hanging wheel 22 occupies the front and rear portions on the left and right sides of the span. (In the drawings, for simplicity, the left and right suspension wheels 10, 22 are shown as being at the same position).

Thereafter, the upper and lower upper lines 34 are connected to the suspension tower 3
After the transfer to the overhead wire wheel 37 in 2, the tension is released (clamp-off). As a result, as shown in FIG. 5, each lifting wheel 10 initially occupying the center of the span tilts and rotates outside the transmission line division area due to the reversibility by the eccentric weight 21, and interlocks with this to move back and forth. Also tilts outward and rotates, so that each upper line 34 rotates downward through the outside of the transmission line section area. And finally, each hanging wheel 10, 22
Are supported by the tensioned underline 35 via the lower vertical twin wheel 14, the upper line 34 extends below the underline 35, and the eccentric weight 21 of each suspension wheel 10 is located in the transmission line section. It will be in the inverted state where it is located.

In such an inverted state of the hanging wheels 10, 22, as shown in FIG. 6, each new upper line 34 a of the electric drum in the drum field is connected to one end of each inverted upper line 34 via an electric wire joint 38. After connecting and winding each upper line 34 by a winch of the engine field, and extending each new upper line 34a between both diameters through removal by pulling out, as shown in FIG. 7, each new upper line 34a is connected to each new upper line 34a via a winch or the like. By applying tension, each of the suspension wheels 10, 22 and the new upper line 34a is rotated upward through the outside of the transmission line division area at the center portion of the span and the portions before and after it by the reverse biasing force of the eccentric weight 21. Then, both ends of the new upper line 34a are temporarily fixed (temporary tightening line or clamp-in) at predetermined positions.

Subsequently, as shown in FIG.
After loosening the tension of the two strips and supporting them in a relaxed state on the lower vertical twin wheel 14 of each of the left and right hanging wheels 10, 22, as shown in FIG. The new underlines 35a are connected to each other by an electric wire joint 38, and the underlines 35 are simultaneously pulled out and removed by a winch in the engine field, so that each new underline 35a is extended between both diameters. , Tension is applied to each new underline 35a so that the lower vertical twin wheel 14
It is extended along the line in tension, and both ends are temporarily fixed (Fig. 1
0).

Thereafter, as shown in FIG. 11, all the suspension wheels 10, 22 are recovered by manually pulling the left and right suspension wheel connecting ropes 27 by a small winch or the like.
The new upper line 34a and the new underline 35a are adjusted to a regular sag, and are permanently fixed (main tension line) via a winch or the like (see FIG. 12). Finally, as shown in FIG. A new spacer 36a is mounted on the new transmission line consisting of the new upper line 34a and the new lower line 35a.

In addition, the hanging wheel of the present invention may be connected with bolts with a connecting sleeve with an eccentric weight in a state where both connecting shafts of the upper and lower vertical two-wheeled wheels are overlapped as connecting shaft means. Use one of the two connecting shafts that are bolted by butt or overlap with one another, such as bolting a connecting sleeve with an eccentric weight to the connecting sleeve, or use a rivet or welding to connect both connecting shafts and the connecting sleeve. It can be embodied in various forms, such as using a bolt fastening type other than a bolt type that integrates with a hook, attaching a hanging wheel connecting rope fastener to one of a connecting sleeve or a wheel frame, or using a type other than a clip type. It is not limited to the illustrated form.

[0021]

The suspension wheel of the present invention is mounted on the suspension wheel connecting rope such that the eccentric weight is located outside the transmission line section because of the reversibility due to the eccentric weight.
The occurrence of entangling of the transmission line at the time of reversal can be completely prevented, and the desired transmission line can be efficiently replaced.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of a hanging wheel according to the present invention.

FIG. 2 is a schematic view showing a process of extending a guide rope.

FIG. 3 is a schematic view showing a setting process of a hanging wheel;

FIG. 4 is a schematic diagram showing a completed state of a hanging wheel setting process.

FIG. 5 is a schematic view showing a step of reversing the hanging wheel by loosening the upper line.

FIG. 6 is a schematic view showing a wire drawing process of a new upper line.

FIG. 7 is a schematic view showing a temporary tightening process of a new upper line.

FIG. 8 is a schematic view showing an underlining relaxation step.

FIG. 9 is a schematic view showing a process of extending a new underline.

FIG. 10 is a schematic view showing a temporary underlining process of a new underline.

FIG. 11 is a schematic view showing a collection process of a hanging wheel.

FIG. 12 is a schematic view showing a main tightening step of a new upper line and a new underline.

FIG. 13 is a schematic view showing a process of attaching a new spacer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Left-right asymmetric type vertical twin type hanging wheel 11 Upper vertical two wheel wheel 12 Gold wheel frame 12a Opening / closing side frame piece 13 Connecting shaft 14 Lower vertical two wheel wheel wheel 15 Gold wheel frame 15a Opening / closing side frame piece 16 Connecting shaft 17 Hanging wheel connection Rope fastener 18 Connecting sleeve 19 Nut 20 Arm 21 Eccentric weight 22 Right and left substantially symmetrical type vertical twin suspension wheel 23 Floater 24 Guide rope 25 Guide rope suspension wheel 26 Rope joint 27 Suspension wheel connection rope 31 Tensile strength Steel tower 32 Suspended steel tower 33 Transmission line 34 Upper line 34a New upper line 35 Underline 35a New underline 36 Spacer 36a New spacer 37 Wire pulley 38 Electric wire joint

Claims (1)

[Claims] 1. An upper vertical two-wheeled wheel and a lower vertical two-wheeled wheel are coaxially connected via a connecting shaft means with an eccentric weight, and the connecting shaft means or the upper or lower vertical two-wheeled wheel is connected. A four-way transmission line reshuffling wagon comprising a hanger wheel connecting rope fastener attached to an adjacent part of the shaft means or an upper or lower vertical two-wheeled wheel and a mutually adjacent part of the connection shaft means.