JP4934410B2 - Tightening method and chamares fitting used therefor - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a tension device and a method for tying the same, and in particular, a tension method for a total of four conductors including two upper lines and two underlines, and a tying method for tying by a camares method using a gold wheel and the same. It is related to the Camares bracket.

  A conventional method for tightening a double continuous tension device (for four conductors) will be described with reference to the drawings. FIG. 5 is a plan view for explaining the situation of the tight line work, and FIG. 6 is a side view thereof. First, a state immediately before starting the tangling work will be described.

  An insulator series is connected to the steel tower by a tension device mounting bracket, and a line-side double yoke 50 is connected to the insulator series. 5 and 6, the steel tower, the tension device mounting bracket, and the insulator series are not shown.

  A vertical double yoke 54 is attached to the line side double yoke 50 by a right angle clevis 52, and an upper line side double yoke 58 is attached to the upper part of the vertical double yoke 54 via a right angle clevis 56, and the lower part is attached to the lower part. The underlined double yoke 70 is attached via a right angle clevis 68.

  The upper line side double yoke 58 and the lower line side double yoke 70 are metal flat plates having the same shape, and are arranged at a predetermined distance in the vertical direction as can be seen from the side view of FIG. Vernier metal fittings 62 and 63 are attached to the upper line side double yoke 58 via right angle clevis links 60 and 61 at a predetermined distance from the edge opposite to the edge to which the right angle clevis 56 is attached. . Right-angle clevis links 64 and 65 are connected to the line-side tips of the vernier fittings 62 and 63, and parallel clevises 66 and 67 are connected to the right-angle clevis links 64 and 65.

  As with the upper line side double yoke 58, the underline side double yoke 70 is provided with a vernier fitting via a right angle clevis link at a predetermined distance from the edge opposite to the edge to which the right angle clevis 68 is attached. Two units are attached. Furthermore, a right-angle clevis link and a parallel clevis are connected to the tip of the vernier fitting in order. 5 and 6, vernier fittings, parallel clevises, and the like attached to the underlined double yoke 70 are omitted.

  Tensile clamps 74 and 75 are provided at the front ends of the power transmission lines 72 and 73 to be tightened, and a jumper socket (not shown) is formed on the lower surface of the power transmission lines 72 and 73 at the end of the tightening operation. In addition, the brackets 76 and 77 are attached to the tip ends of the tension clamps 74 and 75.

  There are four transmission lines, and the two upper lines are connected to vernier fittings 62 and 63 attached to the upper line side double yoke 58. The connection is made by fixing the Camares fittings 76 and 77 and the parallel clevises 66 and 67 attached to the tip ends of the vernier fittings 62 and 63 with bolts. Similarly, the two underlined strips are connected to the vernier fitting of the underlined double yoke 70. In addition, in the cross section orthogonal to the extending direction of the transmission line, when the four transmission lines are viewed, the figure formed by the four transmission lines is approximately square, and each of the four corners of the approximately square is the square. The transmission line interval, the size of the double yoke, etc. are determined so that the transmission line is located.

  Here, the tangential line work refers to the tips of the camares metal fittings 76 and 77 and the vernier metal fittings 62 and 63 by pulling the power transmission lines 72 and 73 to the steel tower side using the camarete metal fittings 76 and 77 attached to the tip portions thereof. The operation | work which connects the parallel clevis 66 and 67 attached to the part is pointed out. Tightening work is carried out separately for the upper line and the underline.

  Hereinafter, the details of the wireline work will be described. However, although one of the four conductors will be described, the same applies to the other conductors. Tightening work is performed using a gold wheel. Two gold wheels, that is, a gold wheel on the transmission line side and a gold wheel on the steel tower side are required. The steel wheel 80 on the steel tower side is attached to the gold wheel mounting hole 92 of the line double yoke 50. This attachment is performed using a parallel clevis 86. Alternatively, U clevis may be used.

  A wire tightening tool 84 is attached to the commaless metal fitting 76 attached to the tip of the power transmission line 72 during wire tightening work. As shown in FIG. 6, the attachment direction of the tight wire tool 84 is attached so as to protrude vertically below the transmission line 72. A gold wheel 78 on the power transmission line side is attached to the tight wire tool 84 using a right angle clevis 88. Alternatively, U clevis may be used. Then, when the tight wire 82 connecting the two gold wheels 78 and 80 is wound up by a winch or the like, the camares metal fitting 76 approaches the line double yoke 50.

  When the camales fitting 76 and the parallel clevis 66 can be connected, the winding of the tight wire 82 is stopped, and the connection between the camales fitting 76 and the parallel clevis 66 is performed using a bolt and a nut. However, at the time of connection, the vernier fitting 62, the upper line side double yoke 58, and the like hang downward due to gravity. Therefore, it is necessary to work to cause these connecting fittings with a rope or the like.

  After the connection between the camare metal fitting 76 and the parallel clevis 66 is completed, the tight wire 82 is loosened, the transmission line tension is transferred to the tension device side, and then the tight tool 84 is removed from the camare metal fitting 76. The same work is performed for the other line of the upper line, but usually the two lines of line work are performed simultaneously.

  When the upper line 2 tie line work is completed, the underline 2 line tie work is similarly performed. However, the steel wheels 80 and 81 on the steel tower side need not be removed from the gold wheel mounting holes 92 and 93 of the line side double yoke 50. The work may be performed by attaching the gold wheels 78 and 79 on the power transmission line side to the tight line tools connected to the two underlined chamarez fittings. After the two lines of the upper line and the two lines of the underline are finished, the pipe jumper device is installed.

  Note that Patent Documents 1 to 3 show a method of performing a tight line operation using a gold wheel. However, the tension device is for two conductors.

  Patent Document 1 can adopt the camares method by removing the jumper wire receiving piece, and when the jumper wire receiving piece is attached, the direction of the tip of the jumper wire is from the axial direction of the conductor as seen from the plane. An object of the present invention is to provide a tension device suitable for two vertical conductors positioned so as to be separated from each other.

  In order to achieve this purpose, it is provided between the connecting brackets provided on the insulator device attached to the steel tower and the two wedge-shaped clamp bodies, and the axial direction of the mounting holes to the connecting bracket and both the wedges are provided. An angle clevis fitting having a predetermined angle of more than 0 degrees and less than 90 degrees with respect to the axial direction of the mounting hole to the mold clamp body is provided.

  Patent Document 2 is intended to provide a tightening method capable of easily performing a tightening operation. For that purpose, when connecting a tension device having a pair of attachment pieces with one end connected to both sides in a direction perpendicular to the longitudinal direction of both wedge clamp bodies, the other ends of the pair of attachment pieces The pair of attachment pieces are pulled in a direction away from the longitudinal axis when the pair of attachment pieces are tightened, and the pair of attachment pieces are attached to the yoke pieces via connecting fittings.

  Patent Document 3 eliminates the twisting phenomenon between the line side yoke and the right angle clevis at the time of the tight connection and the interference between the cable and the connecting metal fittings such as the vernier metal fittings when the wire tension is transferred to the tension device side. It aims at providing the method of performing a connecting operation smoothly. For this purpose, an offset tool having an offset connecting portion protruding upward from the connecting axis connecting the connecting points of the metal fittings is attached to the metal fittings on the line side, and the offset of the tightening tool and the offset tool is attached. Tightening is performed with a gold wheel device interposed between the connecting portions.

Japanese Patent No. 3229095 JP 2002-51417 A Japanese Patent No. 2777185

The methods shown in FIGS. 5 and 6 have the following problems.
(1) When connecting the Camares metal fitting and the parallel clevis, the transmission wheel side gold wheel and the parallel clevis compete with each other, and the connecting work is difficult.
(2) During tight wiring work, no load is applied to the upper line side double yoke or the lower line side double yoke, and when the connecting brackets such as the double yoke and vernier fitting drop due to gravity, they are connected. It is necessary to raise the brackets horizontally.
(3) Since there is a vertical separation (offset) between the connecting bracket and the steel tower-side gold wheel fixed to the line side double yoke, the connecting work is troublesome.

  In Patent Documents 1 to 3, a gold wheel is used for the wire-tightening work, but the tension device is for two conductors, and the parts and configuration used are different from those for the four conductors targeted in the present invention. The issues to be solved are not the same. For example, in the case of two conductors, only one horizontal double yoke is required, and a gold wheel is connected to this, so there is a problem that the load is applied at the time of tightening work, and there is a problem that the connection fittings hang down due to the weight. do not do.

  Therefore, the techniques disclosed in Patent Documents 1 to 3 cannot be applied to the solution of the problem of the present invention. The technique disclosed in Patent Document 2 for pulling the other end portion of the pair of mounting pieces in a direction away from the longitudinal axis when the pair of mounting pieces are tightened is removed. Although there is a difference that the direction is not vertically below the transmission line but vertically above, it is included in the technical contents shown in the background art and additionally requires a complicated metal wheel mounting bracket.

  The present invention has been made in view of the above-mentioned problems, and its purpose is related to a tension device for four conductors, which is attached to a chamares metal fitting attached to a tension clamp at the time of wire tightening work and a vernier metal fitting. It is an object of the present invention to provide a fastening method capable of smoothly connecting a parallel clevis and a chamares fitting used therefor.

According to the first aspect of the present invention, there is provided a line tensioning method for a tension device, a line side double yoke connected to an insulator series of a steel tower, and a vertical 2 attached to the line side double yoke using a right angle clevis. An upper line side double yoke or an underline side double station of a tension device comprising a continuous yoke and an upper line side double yoke and a lower line side double yoke attached to the vertical double yoke using right angle clevises, respectively. In a tensioning device tightening method for connecting a parallel clevis connected to the tip of a vernier fitting attached to a yoke and a camares fitting attached to a tip of a tension clamp of a transmission line to be tightened The chamares metal fitting is provided with a tightening tool for connecting with the gold wheel on the power transmission line side, protruding in the horizontal direction at an angle of about 90 degrees with the tightening direction. a linked transmission line side of the gold car, the upper Inside the two vernier fitting side duplicate yoke or underline side twin yoke, or the tower side of the gold wheel connected to the outside via the attachment, and performs緊線work by.

  By adopting the above method, the connection between the Camares bracket and the parallel clevis can be performed from the horizontal direction in the horizontal plane, so there is no competition between the gold wheel on the transmission line side and the parallel clevis, It does not rub against connecting wires such as tangential wires and vernier fittings. Therefore, it is possible to perform the connecting operation smoothly.

In addition, the steel wheel on the side of the steel tower is connected to the line-side double yoke connected to the insulator series, the upper-side double yoke connected to the upper or lower part, or the lower-line-side double yoke. When connected to the inside of the two vernier fittings, the wire closing work performed by the steel wheel on the pylon side and the gold wheel on the power transmission line side has no problem of offset at the time of the wire closing work, and the upper line side double yoke or since it takes a load to underline side duplicate yoke drop in connecting metal fittings is prevented, it is possible to perform the connection work more smoothly. Moreover, since the steel wheel side gold wheel is not attached to the line side double yoke, the space for the gold wheel mounting hole can be reduced, and the line side double yoke can be reduced in size and weight.

Further, the steel wheel-side gold wheel is connected to the vertical two-unit yoke connected to the line-side two-unit yoke connected to the insulator series, the upper line-side two-unit yoke connected to the upper or lower part, or the lower-line side two-unit yoke. outside the base vernier fitting, when linked via a attachment,緊線work performed by towers side gold wheel and the transmission line side of the gold car, connecting metal fittings gold wheel, especially contact with vernier fittings Therefore, the connecting work can be performed smoothly. Note that resource costs can be reduced by reusing attachments.

As described in claim 2 , since the line side end connected to the parallel clevis is twisted approximately 90 degrees in the vernier fitting, a right angle clevis is not required for connection between the vernier fitting and the parallel clevis, It is possible to reduce the cost and save the labor of the bracket assembly. Further, since the drop of the parallel clevis due to gravity can be eliminated at the time of connection, the connection work can be performed smoothly.

According to a third aspect of the present invention, there is provided a chamares metal fitting according to a third aspect of the present invention, a line side double yoke connected to an insulator of a steel tower, a vertical double yoke attached to the line side double yoke using a right angle clevis, A tension device having an upper line side double yoke and an under line side double yoke attached to the vertical double line yoke using right angle clevises, and attached to the upper line side double yoke or the lower line side double yoke. Tightening tool for connecting the power wheel on the power line side of a bracketless bracket attached to the tip of the tension clamp of the transmission line to be connected to the parallel clevis connected to the tip of the vernier fitting However, it is characterized in that the tightening tool mounting portion is provided so that it can project in the horizontal direction at an angle of approximately 90 degrees with the tightening direction.

  By adopting such a configuration, the connection between the Camares bracket and the parallel clevis can be performed from the horizontal direction in the horizontal plane, so there is no competition between the gold wheel on the transmission line side and the parallel clevis, and there is no tight connection. It does not rub against connecting wires such as wire wires and vernier fittings. Therefore, it is possible to perform the connecting operation smoothly.

  According to the present invention, the chamares metal fitting enables the tight line tool for connecting to the transmission wheel side gold wheel to project in the horizontal plane at an angle of about 90 degrees with the tight line direction. The connection between the camares metal fitting and the parallel clevis can be performed from the horizontal direction in the horizontal plane, and the competition between the gold wheel on the transmission line side and the parallel clevis does not occur, and the connection work can be performed more smoothly.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view according to a first embodiment of a tightening method for a tension device of the present invention. The basic configuration is the same as that according to the prior art shown in FIGS. 5 and 6, and the same components are denoted by the same reference numerals and description thereof is omitted. Hereinafter, different points will be described in detail.

  First, the chamares fitting attached to the tension clamp 74 of the transmission line 72 to be connected is different. FIG. 2 shows a plan view (a) and a side view (b) of the chamarez fitting 10 according to the present invention. The difference from the conventional chamares metal fitting is that the protector 84 is connected to the transmission wheel side gold wheel 78 so that it can project in the horizontal plane at an angle of approximately 90 degrees with respect to the tightening direction. The attachment portion 20 and the stringing tool attachment portion 22 are provided by being rotated 90 degrees as compared with the conventional one. Note that the clevis-type mounting portion 24 and the eye-shaped mounting portion 26 connected to the tension clamp 74 are the same as those in the conventional art.

  Next, the vernier fittings are different. FIG. 3 shows a plan view (a) and a side view (b) of the vernier fitting 12. In the vernier fitting 12 according to the present invention, the parallel clevis mounting portion 28 to which the parallel clevis 66 is mounted is provided by being rotated 90 degrees compared to the conventional one. As a result, the vertical clevis 64 that was necessary in the prior art can be omitted.

  The mounting positions of the gold wheels 80 and 81 on the steel tower side are different. In the first embodiment of the present invention, it is attached not to the line side double yoke 18 but to the upper line side double yoke 58. However, when two underlined lines are tightly connected, they are attached to the underlined double yoke 70. Vernier fittings 12 and 13 are attached to the upper line side double yoke 58 by right angle clevises 60 and 61. The steel wheels 80 and 81 on the steel tower side are attached between the two vernier fittings 12 and 13. The steel wheels 80 and 81 are attached to the upper double yoke 58 by the right angle clevises 14 and 15. Alternatively, U clevis may be used.

  Since the steel wheels 80 and 81 on the steel tower side are attached to the upper line side double yoke 58 as described above, the gold wheel mounting holes for attaching the steel wheels 80 and 81 on the line side double yoke 18 are provided. It becomes unnecessary. Therefore, the line-side double yoke 18 according to the present invention requires less width than the conventional line-side double yoke, and can be reduced in size and weight.

  The tightening tools 84 and 85 attached to the camares metal fitting 10 are projected in the horizontal plane at an angle of about 90 degrees with the tightening direction as described above. As shown in FIG. 1, the gold wheels 78 and 79 on the power transmission line side are attached in a direction that does not hinder the work, that is, toward the inner side of the tension device, when tightened.

  Hereinafter, the tangential line work will be described. However, as in the background art, one of the four conductors will be described, but the same applies to the other conductors. When the tight wire 82 connecting the two gold wheels 78 and 80 is wound up by a winch or the like, the chamares metal fitting 10 approaches the upper line side double yoke 58.

  When the camales metal fitting 10 and the parallel clevis 66 can be connected, the winding of the tight wire 82 is stopped, and the connection between the camale metal fitting 10 and the parallel clevis 66 is performed using a bolt and a nut. After the connection between the camare metal fitting 10 and the parallel clevis 66 is completed, the tight wire 82 is loosened to transfer the transmission line tension to the tension device side, and then the tight tool 84 is removed from the camare metal fitting 76. According to the tightening method according to the first embodiment, the following effects are brought about.

(1) Although a load is applied to the upper-line-side double yoke 58 due to the tight wire and the vernier fitting 12 and the like hang down, there is no longer a problem with the work that causes the conventional connecting fittings.
(2) Since there is no offset between the parts to be connected to each other, that is, the camares fitting 10 and the parallel clevis 66, the connection is extremely easy.
(3) Since the gold wheel 78 and the parallel clevis 66 on the power transmission line side do not compete with each other as in the prior art, the connection work is further facilitated.
(4) By improving the front end of the line side of the vernier fitting 12 and forming the parallel clevis mounting portion 28, the right angle clevis 64 is not necessary as described above, and the vertical clevis 66 is prevented from swinging in the vertical direction. As a result, the cost of parts can be reduced and the connection work is facilitated.

  FIG. 4 is a plan view according to the second embodiment of the present invention. The basic configuration is the same as that of the first embodiment, but only the mounting position of the steel wheel on the steel tower side is different.

  The steel tower-side gold wheels 80 and 81 are attached to the laterally outer side of the upper line side double yoke 58 by attachments 94 and 95, so that the steel tower-side gold wheels 80 and 81 are attached to the vernier fitting 12, 13 is located outside. Correspondingly, the tangential tools 84 and 85 attached to the camares metal fitting 10 are attached toward the outer side of the tension device.

  Also in the second embodiment, effects similar to the effects (1) to (4) shown in the first embodiment are brought about. The use of the first embodiment and the second embodiment is as follows. In 1st Embodiment, when the space | interval between power transmission lines is narrow, the case where the power wheels 78 and 79 of a power transmission line side or the power wheels 80 and 81 of a steel tower side may contact may occur. Similarly, the gold wheels 78 and 80 and the vernier metal 12 and the gold wheels 79 and 81 and the vernier metal 13 may contact each other. Further, when the connecting metal fittings such as the vernier metal fittings 12 and 13 are short, the transmission line side metal wheels 78 and 79 and the steel tower side metal wheels 80 and 81 may be brought into contact with each other due to insufficient taking-in allowance.

  In such a case, as shown in the second embodiment, the steel wheels 80 and 81 are attached to the upper line side double yoke 58 using the attachments 94 and 95, and the outside of the vernier fittings 12 and 13 is outside. The above-mentioned problem can be solved by attaching to the. Note that the attachments 94 and 95 can be reused when it is necessary to perform the wire-line work at a plurality of locations on one steel tower.

1 is a plan view according to a first embodiment of a tightening method for a tension device of the present invention. FIG. 4 is a plan view (a) and a side view (b) of a camares metal fitting according to the first embodiment of FIG. 1. FIG. 4 is a plan view (a) and a side view (b) of a vernier fitting according to the first embodiment of FIG. 1. It is a top view which concerns on 2nd embodiment of the tightening method of the tension | tensile_strength apparatus of this invention. It is a top view explaining the fastening method of the conventional tension device. It is a side view explaining the fastening method of the conventional tension device.

Explanation of symbols

10, 11, 76, 77 Camares metal fittings 12, 13, 62, 63 Vernier metal fittings 14, 15, 16, 17, 52, 56, 68, 88 Right angle clevis 18, 50 Line side double yoke 20 Protector mounting part 22 Tight line Tool mounting portion 24 Clevis-shaped mounting portion 26 Eye-shaped mounting portion 28 Parallel clevis mounting portion 30 Yoke side mounting portion 54 Vertical double yoke 58 Upper double rail yoke 60, 61, 64, 65 Right angle clevis link 66, 67, 86 Parallel Clevis 70 Underlined double yoke 72, 73 Transmission line 74, 75 Tensile clamp 78, 79 Transmission line side wheel 80, 81 Steel tower side wheel 82, 83 Tightening wire 84, 85 Tightening tool 92, 93 Gold wheel mounting holes 94, 95 Attachment

Claims (3)

A line-side double yoke connected to an insulator of a steel tower, a vertical double-line yoke attached to the line-side double yoke using a right-angle clevis, and a vertical-side double yoke attached to the vertical double-line yoke, respectively. A parallel clevis connected to a tip portion of a vernier fitting attached to the upper line side double yoke or the under line side double yoke of a tension device having an upper line side double yoke and an underline side double yoke ; In the tightening method of the tension device that connects the chamares fitting attached to the tip of the tension clamp of the transmission line to be tightened,
In the chamares metal fitting, a tightening tool for connecting to the gold wheel on the power transmission line side is projected in a horizontal direction at an angle of about 90 degrees with the tightening direction, and connected to the tightening tool. The power transmission line-side gold wheel and the steel-side gold wheel connected to the inside of the two vernier fittings of the upper line side double yoke or the lower line side double yoke, or to the outside via an attachment. A tensioning method for a tension device characterized by performing wire work. 2. The tensioning device tightening method according to claim 1 , wherein the vernier fitting has a line side end connected to the parallel clevis being twisted by approximately 90 degrees. A line-side double yoke connected to an insulator of a steel tower, a vertical double-line yoke attached to the line-side double yoke using a right-angle clevis, and a vertical-side double yoke attached to the vertical double-line yoke, respectively. And a parallel clevis connected to the tip of a vernier fitting attached to the upper line side double yoke or the under line side double yoke of the tension device having the upper line side double yoke and the underline side double yoke. In the Camares fitting attached to the tip of the tension clamp of the transmission line to be tightened,
An attachment portion for the tightening tool is provided so that the tightening tool for connecting the gold wheel on the power transmission line side can project in a horizontal direction at an angle of approximately 90 degrees with respect to the tightening direction. Camares metal fittings characterized by that.

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