JP2005295660A - Snatch block device for transmission line laying construction, and multiple conductor hanging method using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a snatch block device for transmission laying construction which doubles as a spacer function for keeping an interval between transmission lines so as to prevent the collision during its construction period, and a multiconductor hanging method using it. <P>SOLUTION: The snatch block device 1 has snatch blocks 2 and 3, a link 4, and rope couplings 5. The snatch blocks 2 and 3 have frames 6 and rollers 7 and 8. The link 4 has arms 9 and 10, which couple the frames 6 with each other at a specified interval. A rope R for coupling it with another snatch block 1 is tied to the coupling 5. Arms 9 and 10 are pivoted at base ends by the frames 6, and are pivoted at the other ends freely of bend and stretch at a specified angle. When a line W2 slacks and is hung down under a line W1, a pivotal point 12 comes outside a vertical line V which connects the pivotal fulcrums 11 and 11 of the arms 9 and 10 with each other. When the line W2 within the snatch block 3 is replaced with a new-established line, and is tensed and returns to the former position of the line W2, the arms 9 and 10 bend inward around the pivotal point 12 thereby regulating the rotational direction of the snatch block 3. The snatch block device 1 works as a spacer between two lines by the link 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  In this invention, in the transmission line erection work in which the existing transmission lines installed almost in parallel with a space on the left and right are sequentially replaced with new lines, the existing lines are sequentially pulled out and removed, and the new lines are successively extended. Therefore, the present invention relates to a gold wheel device that is hung on the left and right existing power transmission lines and is deployed in the extending direction, and a multiconductor suspension method using the same.

4 lines (4 conductors) of transmission lines installed almost parallel with left and right and up and down are replaced by a transmission line construction method called the reversible suspension method that reverses the upper and lower lines on the left and right respectively. This is described in Patent Document 1. In Patent Document 1, a suspension wheel coaxially connects an upper vertical two-wheel wheel hung on an upper line and a lower vertical two-wheel wheel hung on an underline via a connection shaft means with an eccentric weight (eccentric load block). Thus, it is composed of a right and left asymmetrical type (with an eccentric weight) having a hanging wheel connecting rope fastener. This construction method is roughly as follows. While removing the spacers between the existing lines on the left and right using a suspension machine, hang a plurality of vertical twin-wheeled suspension cars connected by connecting ropes on the upper and lower existing lines and expand them to one diameter, and both ends to the steel tower To support. Remove the upper line from the steel tower, loosen the tension, turn the suspension wheel upside down, and support the upper line with the suspension wheel in the underline of tension. The upper line is pulled out and removed, and the new upper line connected to it is passed through a gold wheel and extended. Tension is applied to the new upper line, and it is raised to the old position of the existing upper line, the suspension wheel is reversed, and the new upper line is retained on the steel tower. Remove the underline from the steel tower, loosen the tension, support the underline with the suspension car on the tensioned new line, pull out and remove the underline, and extend the new underline connected to it through the gold wheel, Keep on.
JP 2001-95116 A

In the conventional construction method described above, since the spacers between the transmission lines are removed during the construction period, it is unavoidable that the transmission lines are swung by the wind pressure and collide with each other. Transmission line collisions cause noise and damage to the transmission lines. Noise generation is a major problem especially during construction in urban areas.
The present invention is a construction of a transmission line that also functions as a spacer that can maintain a distance between transmission lines and prevent a collision caused by a swing without requiring any special additional measures even during a construction period. Providing construction-use gold wheel equipment. The present invention also provides a metal wheel device capable of efficiently regulating the reversing work by automatically restricting the direction of reversal and return of the device at the time of the wire repainting operation, and the construction of a transmission line using this gold wheel device. It is intended to provide a method of construction.

  In the present invention, a pair of gold wheels formed by pivotally supporting at least two rollers 7 and 8 opposed to each other on a frame 6 configured to be openable and closable in order to take in two existing horizontal transmission lines W1 and W2. 2, 3, and a link R that connects the frame 6 of the pair of gold wheels 2, 3 with a predetermined distance between them and a rope R that connects the other gold wheel device 1. In order to stop, the money wheel apparatus 1 is configured by including a rope coupling portion 5 provided on each frame body 5. The link 4 includes first and second arms 9 and 10, which are pivotally supported at the base ends of the frames 6 of the gold wheels 2 and 3, respectively, and can be flexed and extended at predetermined angles within the other ends. Pivot. When one W2 of the two existing lines W1 and W2 hung by the respective gold wheels 2 and 3 is loosened and suspended together with the gold wheel 3 below the other existing line W1, the first and second arms 2 The first and second arms 9 and 10 are refracted so that the arm pivot point 12 is disposed outside the vertical line V connecting the three pivot points 11 and 11. The refraction angle range of the first and second arms 9 and 10 is such that after the existing line W2 in one of the gold wheels 3 is replaced with a new line, the new line is tightened together with the gold wheel 3 and the existing line W2 The first and second arms 9 and 10 are set so that they are refracted by a predetermined angle only inside each other around the pivot point 12. Thereby, the rotation direction of the gold wheel 3 is regulated. The gold wheel device 1 functions as a spacer between two lines by maintaining the distance between the pair of gold wheels 2 and 3 by the link 4 during the construction work.

  Preferably, the first and second arms 9 and 10 are bent in a square shape. An arc-shaped long hole 9 a centering on the pivot point 12 is provided at the end of the mutual pivoting side of one arm 9 at the tip side from the pivot point 12. A guide pin 10a as an engaging portion that is movably engaged with the long hole 9a is provided at the end on the pivot side. Thereby, the angle range of the first and second arms 9 and 10 is defined.

As the gold wheels 2 and 3, either a two-wheel metal wheel in which a pair of opposed rollers 7 and 8 are arranged on the frame body 6 or an annular metal wheel in which two or more rollers are arranged in an annular shape on the frame body can be adopted. .
Moreover, the said subject can be solved by the multiconductor hanging metal method using the said gold wheel apparatus of this invention.

  In this invention, since the gold wheel device acts as a spacer between two horizontal lines, even during the construction period, the distance between the transmission lines is maintained without requiring any special additional measures, and the collision caused by the swinging is prevented. Can be prevented. As a result, it is possible to prevent the generation and damage of noise due to the collision of the transmission line during the construction work. It has the effect that the reversing work can be efficiently performed by automatically regulating the direction of reversal and return of the device during the rewiring operation.

  Embodiments of the present invention will be described with reference to the drawings. 1 is a front view of the gold wheel apparatus, FIG. 2 is a plan view of the gold wheel apparatus, FIG. 3 is an enlarged front view of a part of the link, and FIG. 4 is an enlarged part of the link in a state where the gold wheel apparatus is reversed. FIG. 5 is an explanatory view showing the outline of the multiconductor suspension method in order, and FIG. 6 is a front view of a gold wheel device according to another embodiment.

  1 to 3, the gold wheel apparatus 1 includes a pair of gold wheels 2 and 3, a link 4 that connects the gold wheels, and a rope coupling portion 5 provided on the gold wheels 2 and 3.

  The gold wheels 2 and 3 have the same structure in which the rollers 7 and 8 are pivotally supported on the frame body 6. The frame 6 is substantially rectangular and is configured to be openable and closable so as to take in the power transmission lines W1 and W2, and supports the two rollers 7 and 8 facing each other. A clevis 6a is provided on one end side of the frame 6 in the direction in which the rollers 7 and 8 face each other.

  The link 4 includes first and second arms 9 and 10 and connects the frame bodies 5 of the pair of gold wheels 2 and 3 with a predetermined mutual interval. The first and second arms 9 and 10 are each bent in a "<" shape, and are pivotally supported at the proximal end by the pivot pin 11 on the clevis 6a of the respective gold wheels 2 and 3, and at the other end by the pivot pin. 12 are pivotally attached to each other within a predetermined range of mutual refraction.

  The end portion of the first arm 9 that is pivotally attached is enlarged, and has an arc-shaped elongated hole 9a on the tip side of the pivot pin 12 that is a pivot point. The long hole 9 a has an arc shape centered on the pivot pin 12. A guide pin 10 a that is movably engaged with the long hole 9 a is attached to the second arm 10. Therefore, the first and second arms 9 and 10 can be refracted to each other within a range in which the guide pin 10a moves along the long hole 9a. Then, as shown by the phantom line in FIG. 1, in the state where the existing line W2 on which the gold wheel 3 is hung is loosened and suspended together with the gold wheel 3 below the existing line W1, the first arm 9 A mutual pivot point (pivot pin 12) is located outside the vertical line V connecting the pivot point (pivot pin 11) and the pivot point (pivot pin 11) of the second arm 10 (outside the line of the existing lines W1 and W2). The mutual positions of the long hole 9a and the guide pin 10a are set so that the straight lines A and B connecting the three pivot points 11, 12, 11 are bent inward at the pivot point 12. Yes. Therefore, when the lower gold wheel 3 receives an upward force, the arms 9 and 10 are automatically bent inward, and the movement is regulated so as to rotate counterclockwise around the upper pivot point 11 as a whole. Will be.

  The rope coupling portion 5 is composed of a metal fitting whose base end is pivotally attached to the clevis 6a of the frame body, and a rope R connecting the other gold wheel device 1 is locked to the distal end side thereof.

  As shown in FIG. 4, for example, the replacement work of the two horizontal transmission lines W <b> 1 and W <b> 2 using the gold wheel apparatus 1 is performed as follows. As shown in FIG. 5A, while removing the spacer S between the left and right existing lines W1 and W2 using the air riding machine C, the gold wheel apparatus 1 connected by a plurality of connecting ropes R is connected to the left and right existing lines W1, W1. Hang on W2 and expand within one span. As shown in FIG. 5 (b), both ends of the rope R of the metal wheel apparatus developed at an interval of about 25m to 30m between one diameter are supported by a steel tower T, and the other diameters are successively developed in the same manner. As shown in FIG. 5 (c), the existing wire W2 is removed from the steel tower to loosen the tension, the gold wheel device 1 is turned over, and the existing wire W2 is placed below the tensioned existing wire W1. To support. The existing line W2 is pulled out and removed, and the new line W3 connected thereto is passed through the gold wheel 3 and extended. As shown in FIG.5 (d), tension | tensile_strength is applied to the new line W3 extended between the steel towers, and it raises to the old position of the existing line W2, and raises the gold wheel apparatus 1. FIG. At this time, due to the refraction of the arms 9 and 10, the rotation direction is always guided inwardly between the two lines W1 and W2. Then, the new line W3 is retained on the steel tower T. Similarly, the existing line W1 is replaced by using the new line W3 as a support line.

  The gold wheel device 1 functions as a spacer between two lines by maintaining the distance between the pair of gold wheels 2 and 3 by the link 4 during the construction work. Therefore, there is no risk of noise or damage due to a collision between two lines even during a construction period in which no spacer is attached between two adjacent lines.

  As the gold wheels 2 and 3, in addition to the above-described embodiment, as shown in FIG. In addition, the same code | symbol is attached | subjected to the same structure part as the said embodiment, and description is abbreviate | omitted.

  Here, the method of replacing the existing two horizontal transmission lines has been described, but the gold wheel apparatus of the present invention is also used for the replacement of a four-conductor transmission line in which two existing horizontal transmission lines are arranged above and below. Applicable.

  The present invention relates to a gold wire used as a guide for drawing and removing an existing line and extending a new line in a transmission line erection work in which an existing transmission line laid substantially in parallel with a distance from side to side is replaced with a new line. Used for car equipment.

It is a front view of a gold wheel apparatus. It is a top view of a gold wheel apparatus. It is the front view which expanded a part of link. It is the front view which expanded a part of link in the state where the gold wheel apparatus reversed. It is explanatory drawing which shows the outline of a multiconductor hanging metal construction method later on. It is a front view of the gold wheel apparatus which concerns on other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gold wheel apparatus 2 Gold wheel 3 Gold wheel 4 Link 5 Rope coupling | bond part 6 Frame 7 Roller 8 Roller 9 1st arm 9a Arc-shaped long hole 10 2nd arm 10a Guide pin 11 Pivot pin 12 Pivot pin C R Connecting rope S Spacer T Steel tower W1 Existing line W2 Existing line W3 New line

Claims (5)

In order to use it for the construction to replace the existing two horizontal lines with new ones in sequence, a gold wheel apparatus for construction of power transmission lines in which a plurality are connected and deployed on the existing lines at predetermined intervals in the extending direction,
A pair of gold wheels each pivotally supporting at least two rollers opposite to the frame that can take in the existing line;
A link for connecting the frames of the pair of gold wheels with a predetermined distance between each other;
In order to lock the rope connecting between the other gold wheel apparatus, a rope coupling portion provided on each frame body,
Each of the links includes first and second arms that are pivotally supported at the base end by the frame of each gold wheel and pivotally attached to each other at a predetermined angular range at the other end,
When one of the two existing lines on which the gold wheels are hung is loosened and suspended together with one gold wheel below the other existing line, the first and second arms The first and second arms are connected to each other so that the mutual pivot point of the arms is arranged outside a vertical line connecting the pivot points to each frame,
After the existing line in the one gold wheel is replaced with a new line, the first and second lines are connected when the new line is tightened and returned to the old position of the existing line together with the one gold wheel. The refraction angle range of the first and second arms is set so that the arms of the first and second arms are refracted by a predetermined angle only around the pivot point.
A gold wheel device for power transmission line erection work, which is configured to function as a spacer between two lines on which a gold wheel is hung by maintaining the distance between the pair of gold wheels by the link.   The first and second arms are bent in a letter-like shape, and one arm is located at a distal end side with respect to the pivot point and is centered on the pivot point. An arc-shaped elongated hole is provided, and an engagement portion that is movably engaged with the elongated hole is provided at an end portion of the other arm on the pivoting side, whereby the first and second 2. A power transmission wire erection construction gold wheel device according to claim 1, wherein a refraction angle range of the arm is defined.   3. The power transmission line erection work wheel apparatus according to claim 1 or 2, wherein the money wheel is a two-wheel metal wheel in which a pair of opposed rollers are arranged on the frame.   3. The power transmission line erection work wheel apparatus according to claim 1, wherein the money wheel is an annular money wheel in which two or more rollers are annularly arranged on the frame. 4. It is a construction method that replaces two existing horizontal lines with new ones using a gold wheel device.
A pair of gold wheels that pivotally support at least two rollers opposed to the frame body, and two mutually pivoted arms that connect the frame bodies of the pair of gold wheels so as to be able to bend and extend in a predetermined angular range. A plurality of gold wheel devices configured to keep the distance between the pair of gold wheels constant in a state where the first and second arms are refracted at a predetermined angle. A step of preparing a concatenated one,
After the plurality of collision preventing spacers attached to the two existing horizontal lines are sequentially removed in the extending direction, the frame of the pair of metal wheels is opened and hooked to the existing lines, respectively. A step of sequentially deploying a plurality of gold wheel devices connected by a rope in the extending direction along the existing line;
Loosening one of the two existing lines on which the gold wheel is hung, inverting the gold wheel device, and suspending the relaxed existing line below the other existing line;
Disposing a mutual pivot point of the arms outside a vertical line connecting pivot points to the frame bodies of the first and second arms of the inverted gold wheel device;
Extracting the one existing loosened line in the one gold wheel and extending a new line coupled to the existing line;
Tightening this new line to cause the gold wheel device to be horizontally caused, and placing the new line at the old position of the removed existing line;
Inducing the direction of the gold wheel device by causing the first and second arms to refract by a predetermined angle only inside each other around the pivot point; and
A step of maintaining a distance between the pair of gold wheels by the link of the gold wheel device caused to function as a spacer between two lines on which the gold wheel is hung. Construction method.

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