JPH0685605B2 - Wire drawing equipment - Google Patents

Description

Description: [Industrial field of application] The present invention relates to a wire-drawing device used in a wire-drawing method for carrying and extending an electric wire, that is, a support rope and a tow rope (also referred to as a connecting rope) In the close relationship that the intermediate support device that is supported by and the transport device that travels on the support rope and transports the electric wire in a state of being connected by a tow rope are in a close relationship in which one structure defines the other structure. Therefore, the present invention relates to a wire-drawing device that forms a set.

In this specification, when the term "electric wire" is used, not only an ordinary power transmission line but also a communication cable such as an optical fiber cable or a ground wire including an optical fiber cable, that is, an OPGW is included.
Etc. are also included. Also, “rope” includes not only fiber rope but also wire rope.

[Problems to be Solved by Prior Art and Invention]

Examples of such a wire-drawing device or a wire-drawing method using the same are described on pages 61 to 131 of Photoelectric Cable Construction Material Vol. 33 (Transmission Line Construction Technology Study Group; published in December 1987). There is one as shown in the above, and the Heisei 1st Patent Application No.
There is one as shown in 109202 (JP-A-2-294208).

However, in Japanese Patent Application No. 109202 of 1991, a constant spacing is provided below the support ropes in accordance with a phenomenon of contact between the support ropes and the tow ropes, that is, the load fluctuations applied to the ropes and balance fluctuations such as tension. However, there is a phenomenon that the tow rope that should be separated from each other floats up and comes into contact with or crosses the support rope, and there is a disadvantage that the passability of the carrier to the intermediate support is somewhat unstable.

Therefore, in order to solve the problem of the contact rope between the support rope and the tow rope, the applicant of the present application has previously filed a patent application No. 17 of 1991.
7009 (Japanese Patent Laid-Open No. 3-40703) and Heisei 1 Patent Application No. 17701
No. 0 (Japanese Unexamined Patent Publication No. 3-40704) has been proposed.
It is an object of the present invention to provide a wire-drawing device that solves the problem of mixed contact between a support rope and a tow rope by a structure different from 7009 and 1991 Patent Application No. 177010.

[Means for Solving the Problems]

Specifically, an intermediate support device that supports the support rope and the tow rope on the steel tower and a carrier device that travels on the support rope while transporting the electric wire while being pulled by the tow rope in a daisy chain shape are formed. In the wire drawing apparatus, the intermediate support device includes a first support part for supporting the tow rope, and a second support part for supporting the support rope below the first support part. (EN) Provided is a wire-drawing device including a connecting portion for connection and a traveling portion arranged substantially in series in a vertical direction with respect to the connecting portion for connecting a tow rope.

[Work]

In this wire drawing device, the support rope and the tow rope are separated and arranged in the vertical direction because the tow rope is above and the support rope is below. Therefore, if tension is applied to the upper traction rope to prevent it from sagging due to its own weight, the traction rope will not hang down, while the support rope will support the weight of the carrier and the electric wire and will not float up. Therefore, there is no contact between the ropes.

Moreover, in this wire-drawing device, the connecting portion and the traveling portion are arranged substantially in series in the vertical direction in the carrier, and both the supporting and pulling ropes are arranged substantially in series in the vertical direction. A bending moment in the horizontal direction is hardly generated between the carriage and the traveling section, and the structure of the carrier can be simplified accordingly, and the traveling stability of the carrier can be improved.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

It should be noted that the concepts of up-down, left-right, front-back, etc. used in the description are based on the drawing or the traveling direction of the carrier, but are relative.

As shown in FIG. 1, the wire drawing device 1 includes an intermediate supporter 2,
The intermediate support device 2 and the transport device 3 that passes through the intermediate support device 2 in the relationship shown in FIG.

As shown in FIGS. 1 and 2, the intermediate supporter 2 supports the tow rope J in the gate-shaped base frame 10 including the left and right vertical frame portions 10v, 10v and the horizontal frame portions 10h. The base frame includes a first support portion 11 and a second support portion 12 for supporting the support rope S.
It is used by suspending it on a steel tower through a suspension part 13 provided on the upper part of 10.

The first support portion 11 and the second support portion 12 are vertically separated so that the first support portion 11 is on the upper side and the second support portion 12 is on the lower side in accordance with the structure of the carrier 3 described later. They are arranged, and are arranged so as to be separated in the horizontal direction within a minimum range necessary for allowing the carrier 3 to pass therethrough.

The first supporting portion 11 includes a lower supporting roller 14 and an upper supporting roller 15 which are paired up and down, and side portion regulating rollers which are paired in front and rear.
16 is attached to the bracket frame 17, and it can be selectively attached to either the left or right vertical frame portions 10v or 10v according to the horizontal angle direction in the steel tower to which the intermediate support 2 is attached. .

The second support portion 12 is provided in a cantilever state at the tip of the support arm 18 protruding from the vertical frame portion 10v, and has a cross section U.
The character-shaped holding clamp 19 is provided so as to cover the supporting roller 21 for supporting the supporting rope S. By holding the supporting rope S by the holding clamp 19, the second supporting rope S is supported by the second supporting rope S. Allows relative movement with respect to the support portion 12, but supports the support rope S in a "semi-fixed state" in which the second support portion 12, that is, the intermediate support device 2 follows the movement of the support rope S in the up, down, left and right directions. You can do it.

FIG. 2 shows three intermediate supports 2a, 2b, 2a via a base body 23 having a hanging part 22 for hanging on a steel tower.
It is an example of the case of using as a set. In the figure, the base body 23 is shown in a simplified manner for the sake of clarity.

That is, three intermediate supports 2a, 2b, 2a are suspended with respect to the base body 23 so as to be symmetrical in the traveling direction of the carrier 3, and the front and rear intermediate supports 2a, 2a are supported by the support rope S. Of the support ropes S in the steel tower are arranged automatically on a curve corresponding to the catenary angle of the support rope S in the steel tower together with the fixed center intermediate support 2b. .

Specifically, each of the front and rear intermediate supports 2a, 2a is suspended by a movable suspension member 24, and the middle intermediate support 2b is suspended by a fixed suspension member 25.
Is suspended from the guide portion 27 via the suspension portion 26, and the suspension portion 26 can be slid along the guide surface 27f of the guide portion 27 as indicated by the arrow Z.

In addition, each of the intermediate supports 2a, 2b, 2a has a connecting member 28, 2 whose one end side is fixed to each of the intermediate supports 2a, 2b, 2a.
The other ends of 8, ... Are connected to each other by hinged connection, and a pair of hinge members 29 are attached to the lower ends of the front and rear intermediate supports 2a, 2a. , 29, the lower ends are connected by a pair of springs 30, 30 and guide members 31, 31. That is, the lower ends of both of the intermediate supports 2a, 2a are regulated by the guide member 31 which is free in the direction of the arrow A with respect to the hinge member 29 of the intermediate support 2a on the left side of the drawing, while being separated from each other by the spring 30. It is urged away. This spring
The urging force by 30 is for reducing the upward movement of the support rope S, that is, the upward movement of the intermediate support 2a,
It is designed to substantially balance with the own weight of the intermediate supporter 2a.

Further, the front and rear intermediate supports 2a, 2a are respectively provided with tow rope retainers 32 as shown in FIG.

The tow rope retainer 32 is attached to the lower end side of a base member 33 for fixing to the intermediate support 2a so as to rotate an arm member 35 with a retainer roller 34 as shown by an arrow B, and also to attach the arm member 35. In the same manner as the structure for connecting the lower ends of the intermediate supports 2a, 2a described above, a pair of hinge members.
36, 36, a spring (not shown), and a guide member 37 that support the base member 33 from the upper end side. The urging force of the spring always pushes down the tow rope J to support the lower portion of the first support portion 11. It is pressed against the roller 14. That is, the tow rope retainer 32 serves to prevent the tow rope J from derailing from the lower support roller 14 by constantly pressing the tow rope J against the lower support roller 14.

In such a suspension structure of three intermediate supports 2a, 2b, 2a, the intermediate support suspended by the movable suspension member 24.
Since 2a, 2a are in a semi-fixed state with respect to the support rope S as described above, in accordance with the movement of the support rope S as shown by the arrow F, via the hinge connection portions of the connecting members 28, 28, .... While rotating, it moves up and down with the state shown by the solid line as the lower limit and the state shown by the imaginary line as the upper limit. And as a result, the intermediate support 2
The a, 2b, and 2a are arranged according to the catenary curve of the support rope S.

Particularly in this embodiment, a hinge member is provided between the intermediate supports 2a and 2a.
29, the spring 30, and the guide member 31 are connected to each other, so that the support rope S can cope with a case where an upward catenary curve is generated by using the steel tower at the valley bottom. That is, it is also possible to arrange the front and rear intermediate supports 2a, 2a above the central intermediate support 2b to form an upward curve. In this case, the tow rope J is pressed against the upper support roller 15.

In this way, it is necessary to use a plurality of intermediate supports 2 as a set, and to automatically arrange each intermediate support 2 on the curve corresponding to the catenary angle of the support rope S. Since the catenary angle is divided into the intermediate supports 2 and the angle of the support rope S with respect to the intermediate supports 2 is small, the passability of the carrier 3 is improved.

Reference numeral 39 in the drawing denotes a guide frame for guiding the passage of the carrier 3.

As shown in FIGS. 4 and 5, the carrier 3 includes a connecting portion 40 for connecting to the tow rope J, a traveling portion 41 for traveling on the support rope S, and a carrier T for carrying an electric wire (see FIG. (Fig. 1)
It is provided with a hanging portion 42 for suspending the traveling part 41, but the traveling part 41 and the connecting part 40 are arranged so that the traveling parts 41 are arranged substantially vertically in series below the connecting part 40. Has been done.

As described above, the structure in which the running portions 41 are vertically provided in series below the connecting portion 40 can avoid the problem of the contact between the tow rope J and the support rope S. That is, if a tension sufficient to prevent the pulling rope J on the upper side from being drooped by its own weight is constantly applied, the pulling rope J will not hang down, while the support rope S supports the weight of the carrier 3 and the electric wire W. Therefore, the ropes J and S are not lifted up, and therefore, there is no contact between the ropes J and S. Further, the vertical arrangement of the connecting portion 40 and the traveling portion 41 has an advantage that the wire drawing work can be made more stable because it is possible to reliably prevent the carrier 3 from being inverted during conveyance.

The connecting portion 40 is connected to the upper end of the traveling portion 41 via the intermediate member 43, and the tip end of the rotating bracket 44 connected to the tip end of the intermediate member 43 so as to be rotatable as shown by arrow G. A gripping body 45 for gripping the tow rope J is connected to the.

The pivot bracket 44 is provided on the connecting portion 40 in this manner in order to allow the carrier 3 to pass through the intermediate supporter 2. That is, as will be described later, in the portion where both ropes J and S are supported by the intermediate support 2, the separation arrangement relationship in the horizontal direction between the above-mentioned first and second support portions 11 and 12 in the intermediate support 2 is provided. The carrying bracket 3 is allowed to pass through by making the rotating bracket 44 horizontal so as to correspond to, while the traction rope J and the supporting rope S are vertically connected in series at the portion not supported by the intermediate supporter 2. The rotating brackets 44 are arranged so as to be arranged vertically so that shearing force or bending moment in the horizontal direction is not generated between the connecting portion 40 and the traveling portion 41.
By thus preventing the shearing force and the bending moment from being generated, the structure of the carrier is further simplified, and the traveling stability of the carrier is also improved.

Here, “substantially” when the connection relationship between the connecting portion 40 and the traveling portion 41 in the vertical direction is “substantially in series” means that the carrier 3 can pass through the intermediate supporter 2 as described above. This means that the case where the connecting portion 40 is allowed to shift in the horizontal direction with respect to the traveling portion 41 is included within the minimum necessary range.

The rotation bracket 44, as shown in FIGS. 6 and 8,
The bracket pieces 44p, 44p having the pin holes 46 formed therein are overlapped with each other, and are opened as shown by an arrow H with the hinge portion 44h as a fulcrum. At the tip of the intermediate member 43 shown in FIG. 9 and FIG. Receptacle 48 mounted via hinge pin 47
The fixing pin 51 is inserted into the receiving hole 49, and the fixing pin 51 is inserted into the pin hole 46 so that the fixing pin 51 is connected to the intermediate member 43.

A pair of collars 52 are connected to the tip of the rotary bracket 44, and the collar 52 is fitted into the fitting grooves 53 formed at both ends of the grip body 45, so that the rotary bracket 44 and Connection with the grip body 45 is made. That is, the rotation bracket 44 can rotate with respect to the grip body 45 as shown by an arrow I in FIG. Here, the collar 52 is also divided into two corresponding to the bracket pieces 44p, 44p,
Each divided piece is connected to each bracket piece 44p, 44p.
Further, a plastic protective body 54 is attached to the collar 52, and the protective body 54 has a pulling rope J gripping body.
It is to prevent rubbing at the corners of 45, and it is divided into two corresponding to collar 52.

The grasping body 45, as shown in FIGS. 6 to 8, is a divided piece 45a.
On the other hand, the split piece 45b is connected so as to rotate about the hinge pin 55 as shown by the arrow K, and as shown in FIG.
A and 45b are locked. Then, a grip hole 57 formed by combining the two divided pieces 45a and 45b.
Is loose with respect to the tow rope J, that is, the inner diameter of the grip hole 57 is slightly larger than the outer diameter of the tow rope J, and the tow rope J is gripped by the push screw 59 via the pressing piece 58.
The tow rope J is gripped by pressing it against the inner wall of 57. Moreover, a female screw-shaped groove is formed on the inner wall of the grip hole 57 so that a large gripping force is exerted on the tow rope J.

An advantage of the gripping body 45 having such a structure is that the carrying device 3 can be attached to the tow rope J very easily. That is, first, with the push screw 59 loosened, the carrier 3
Is set on the tow rope J, then only the tow rope J is run using the loose relationship between the grip hole 57 and the tow rope J, and the push screw 59 is tightened at the mounting position.
Therefore, the work of attaching the carrier 3 to the tow rope J, which is being extended from the engine field toward the drum field, at a constant interval can be performed very easily.

Further, the structure in which the connecting portion 40 and the traveling portion 41 are vertically arranged has the following advantages in addition to the advantages described above. That is, although the intermediate member 43 is interposed between the traveling portion 41 and the connecting portion 40, this intermediate member 43 does not affect the passage relationship of the carrier 3 with respect to the intermediate supporter 2 as will be described later. . Therefore, this intermediate member 43 is necessary for absorbing the structure required to withstand the bending moment applied according to the running resistance of the running part 41 and for absorbing the imbalance in the relationship between the connecting part 40 and the running part 41. The advantage is that the structure can be given freely.

As shown in FIGS. 4 and 5, the traveling unit 41 includes a pair of front and rear traveling rollers 61, 61, a pair of front and rear auxiliary rollers 61a, 61a,
A structure having a pair of front and rear side regulating rollers 62, 62 and an opening / closing frame 63, and having a closed space SP surrounded and formed by the traveling roller 61, the side regulating roller 62, the opening / closing frame 63 and the auxiliary roller 61a. It is a unit that is made.

The open / close frame 63 allows the closed space SP to pass through the second support portion 12 of the intermediate supporter 2, that is, the support arm supporting the support rope S in the second support portion 12 in a cantilever structure.
In addition to allowing passage through 18, the support rope S is put in the closed space SP and the carrier 3 is set on the support rope S.

Specifically, the open / close frame 63 is a pantograph-shaped one in which a pair of left and right vertical link members 63v, 63v and a horizontal link member 63h are combined as a pair around four corners, and usually a spring (not shown) moves upward ( It is locked (closed) by the rod-shaped locking means 66 that is rotated and biased in the L direction (indicated by the arrow) by engaging with the engagement recess 67 formed on the lower side of the lateral link member 63h. By rotating the means 66 downward (in the direction of the arrow M) and removing it, an external force such as the arrow N enables a pantograph-like movement, that is, a movement of deforming into a rhombus as shown by an imaginary line in FIG. When the external force disappears, the spring 68 attached to the rotating pair part naturally returns to its original state and closes.

Further, the opening / closing frame 63 is combined with a lock releasing means 69.

Specifically, in the unlocking means 69, a pair of left and right vertical link members 70, 70, a lower horizontal link member 71 and upper horizontal link members 72, 72 divided into two pieces are provided at the four corners like the opening / closing frame 63. It has a pantograph shape combined as a rotating pair, and its width size is slightly larger than that of the opening / closing frame 63.

The unlocking means 69 is provided on the upper lateral link member 7
Vertical link members 63v, 63v of the opening / closing frame 63 via 2, 72
Is attached to the lower lateral link member 71 while performing a pantograph-like movement by receiving an external force such as the arrow X, that is, a movement indicated by an imaginary line in FIG. The locking means 66 is rotated downward (in the direction of the arrow M) by the pressing surfaces 73, 73 formed as described above, and when there is no external force, the tension springs 74, 74 will naturally return to the original state by the urging force. It has become.

Here, the pair of extension springs 74, 74 are provided on the horizontal link member 63h of the opening / closing frame 63 so as to project through the pair of long holes 75, 75 formed in the lower horizontal link member 71. One end is locked to each of the projections 76, 76, and the other end is locked to the center of the lower lateral link member 71, so that the pantograph-like movement of the unlocking means 69 described above is restored. It is designed to generate a biasing force.

The hanging portion 42 is hung from the upper side surface of the traveling portion 41 via the intermediate member 80, and is rotated with respect to the traveling portion 41 as indicated by an arrow Y in FIG. Therefore,
The load of the electric wire to be conveyed is applied to the upper part of the traveling part 41, that is, between the tow rope J and the support rope S, and the stability against lateral shake due to this load is improved, and the traveling part 41 supports it. Even if the rope S is tilted depending on the tilted state, the hanging portion 42 can always maintain the vertical state.

The state in which the carrier 3 passes through the intermediate supporter 2 is as follows.

Since the tow rope J and the support rope S are in series in the vertical direction when the transporter 3 travels on the support rope S that is not supported by the intermediate supporter 2, the rotation bracket 44 is attached. Although it is in the vertical state, as the arrangement relationship between the tow rope J and the support rope S changes as it approaches the intermediate supporter 2, the rotation bracket 44 is gradually rotated as shown by the arrow G to make the intermediate position. The first and second support parts 11 and 12 of the support device 2 are caused to enter the intermediate support device 2 so as to correspond to the separated arrangement relationship in the horizontal direction.
Figure).

Assuming that the lock release means 69 whose width size is larger than the opening / closing frame 63 is pressed against the support arm 18 of the second support portion 12 of the intermediate supporter, as described above, when moving leftward in FIG. By performing pantograph-like movement, the locking means 66 is rotated in the direction of the arrow M to open and close the frame 63.
Unlock. At this time, it is one of the surrounding members that form the closed space SP of the traveling portion 41 that the unlocking means 69 surely presses the support arm 18 regardless of the posture of the carrier 3 with respect to the intermediate support 2. It can be easily understood from the structure that the opening / closing frame 63 always pushes against the support arm 18, and the unlocking means 69 is combined with the opening / closing frame 63.

When the carrier 3 further advances in this state, the open / close frame 63 is also pressed against the support arm 18 and opens by the pantograph-like movement of the unlocking means 69 as described above and the passage. It will be possible.

[Effects of the Invention] The wire drawing device according to the present invention is as described above and has the following effects.

(A). The structure is such that the support rope and the tow rope are vertically separated in the relationship that the tow rope is above and the support rope is below, so that the upper tow rope can only prevent sagging due to its own weight. Only by applying tension, it is possible to prevent contact between the tow rope and the support rope, making it possible to perform smoother and safer wire drawing.

(B). In the transporter, the connecting portion and the running portion are arranged substantially in series in the vertical direction, and both the supporting and towing ropes are arranged in substantially vertical direction, so that the connecting portion and the running portion are horizontally arranged. Almost no bending moment is generated in the direction, and accordingly, the structure of the carrier can be simplified and the traveling stability of the carrier is improved.

[Brief description of drawings]

FIG. 1 is a schematic side view of an intermediate supporter in a state where a transporter passes, FIG. 2 is a schematic side view of an intermediate supporter in a set state, and FIG. 3 is a schematic side view of a tow rope retainer. FIG. 4 is a schematic side view of the carrier, FIG. 5 is a schematic side view of the carrier seen from the direction of the arrow V in FIG. 4, FIG. 6 is a schematic plan view of the connecting portion, and FIG. FIG. 6 is a schematic sectional view taken along the line VII-VII in FIG. 6, FIG. 8 is a schematic sectional view taken along the line VIII-VIII in FIG. 7, and FIG. 9 is a schematic side view of the intermediate member. And, FIG. 10 is a schematic side view seen from the X direction indicated by the arrow in FIG. 9. 1 …… Drawing device 2 …… Intermediate supporter 3 …… Carrier 11 …… First support part 12 …… Second support part 40 …… Coupling part 41 …… Running part J …… Truck rope S …… Support rope

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideo Akai Hideo Akai 3-27-12 Horikiri, Katsushika-ku, Tokyo Stock company Yasuda Manufacturing Co., Ltd. (72) Inventor Susumu Sato 3-27-12 Horikiri, Katsushika-ku, Tokyo Stocks Inside Yasuda Manufacturing Co., Ltd.

Claims (1)

[Claims] 1. A pair of an intermediate supporter that supports a support rope and a tow rope in a steel tower, and a carry device that travels on the support rope and conveys an electric wire while being pulled by the tow rope in a daisy chain shape. The wire drawing device, wherein the intermediate support device includes a first support part for supporting the tow rope and a second support part for supporting the support rope below the first support part, and the carry device is a tow rope. A wire-drawing device comprising a connecting portion for connection and a traveling portion arranged substantially in series in a vertical direction with respect to the connecting portion for connecting a tow rope.