JPH10201030A - Sheave for laying cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the movement of sheaves for laying a cable both in a flatland and a sloping land and thereby maintain the equal installation intervals of the metal wheels against a supporting wire stretched between electric poles and prevent the suspension of a cable when it is extended and prevent the coming-off of a hook due to a bounding caused when the cable is removed from a roller section and prevent the damage of sheaves and a secondary accident against workers and pedestrians on the ground. SOLUTION: A closing cap 5 of a hook 2 for engagement is provided with a roller section 8 through a link 7. Load applied to the roller section 8 works in the direction to hold a supporting wire and therefore the hook 2 bounds when a cable is removed from the roller section 8. At that time, a release preventive piece 62 mounted on a cap release ring 6 engages with a stopper pin 21 installed in the main body of the hook and prevents the rotation of the closing cap 5 and thereby an opening of the hook is kept in a closed condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable laying wheel mainly used for laying a communication line, and more particularly to a side slip when locking to a support wire and a support wire when extending or collecting a wire. The present invention relates to a gold wheel that has prevented a fall accident.

[0002]

2. Description of the Related Art Conventionally used gold wheels for erection of communication lines include Utility Model Registration No. 2510626, and
There is a cable erection wheel described in Japanese Patent No. 027582. The former has a “hook for locking” on the top of the roller.
By using the hook utilizing the invention of Japanese Patent Publication No. 5-8027, it is possible to disengage the ground from the ground by the operation rod, and to open the roller part by the operation rod to release the line in the roller and extend it. Lines and gold cars were also collected from the ground. The main purpose of these wheels used during wire drawing is to prevent the wires from hanging down during the span during the wire drawing and to prevent damage to the wires and obstruction of traffic. When the wheels arranged at the intervals move and deviate from the initial arrangement position, the support intervals are widened, and there are places where the lines hang down, and the purpose is not achieved. The latter is an improved device of a hook portion for locking, which is a weak point of the hook for locking, and prevents a wheelchair from moving due to slippage caused by tilting when locked on a line laid on an inclined ground. .

[0003]

SUMMARY OF THE INVENTION The above two examples of the invention
Due to the invention, much of the work was carried out on utility poles, and most of the extension work, which had a risk of falling, was replaced with ground work, making it a safe work. But that didn't mean the task was gone. In a normal wire drawing, first, a supporting wire is stretched between the wire drawing diameters, and a predetermined number of the wheel having the wire drawing rope set in the roller portion is fixed to the supporting wire from the ground by an operation rod, and the wire is fixed in the span. After supporting the extension rope at substantially equal intervals, the following telephone cable is pulled out by winding up the end of the extension rope and extended. The support wire is stretched horizontally at both ends of the construction span, but it is inevitably sagged in the middle, and a considerable number of wheel wheels arranged within the span The weight of the cable and the weight of the cable lower the middle part, and if tension is applied for drawing and drawing, the position of the support wire and the position of the cable, that is, the roller of the wheel, will move closer, and the wheel will move between the hook and roller. It bends at the connection point and becomes an unstable posture. When the frame of the roller comes into contact with the cap of the hook, the hook may be released and come off the support wire. (FIG. 12) In the normal extended state, the swing of the cable to be pulled out is not directly transmitted to the hook portion, and the free connection between the two for the purpose of suspending the cable to the stable support wire results in harm. Things. The reversal of the positions of the support wire and the cable occurs not only at the time of wire drawing but also at the time when the wire drawing is completed and each wheel is collected from the support wire. To recover the wheel from the ground, first, the operation piece of the roller section is pulled down by the operation rod, the roller is rotated together with the roller axis, and the cable on the roller is released. Next, the cap opening ring is lifted, the opening / closing cap is rotated, and the hook is opened to recover from the support wire. During this recovery work, when removing the wheel, the load is suddenly removed by opening the cable, the support wire and the cable bounce, and the support wire and the roller of the wheel approach, abut, and reverse the position. Then, it was considered that the opening / closing cap was rotated to cause the falling of the wheel and the detachment from the support wire. Even if the wheel does not fall, the supporting position moves, and the undesirable situation described above was observed. Another challenge is
Regarding the roller section. When setting the cable on the conventional roller unit, the operation piece is pushed down against the spring, the hook piece located opposite to the shaft and the roller shaft are disengaged, and the cable is inserted into the roller frame. Was inserted, and the position of the roller shaft was returned to the engagement position. Then, the operation piece was resiliently returned to engage the hook piece with the roller shaft. In this operation, the act of rotating and holding the operation piece as it is, the act of grasping the cable and putting it in the roller frame, and the act of rotating the roller shaft and returning the operation piece to the engagement position with the hook piece are performed almost simultaneously. It was necessary and troublesome work. Therefore, in the present application, it can be used regardless of the construction of flat ground and sloping ground, which solves the above problems, and can cope with the swinging of the line that occurs at the time of collection, etc. An object of the present invention is to disclose an easy-to-install cable wheel.

[0004]

In order to solve the above problems, the present invention is directed to fixing a support wire W and an existing wire C fitted in a hook portion of a locking hook 2 by pressing with an opening / closing cap 5. The opening and closing cap 5
A roller 8 is connected to the base end of the cable via a link 7 so that the load of the cable applied to the roller 8 acts as a pressing force of the opening / closing cap 5 in the closing direction of the hook, and the roller 8 jumps up when bound. In this case, the opening preventing piece 62 integrated with the cap opening ring 6 provided on the base end side together with the link 7 engages with the stopper pin 21 of the hook body, thereby preventing the rotation of the opening / closing cap 5 and stopping the opening of the hook. Opening is prevented. Also, when the cable is fitted on the roller, the operation piece 12 is prevented from rotating more than necessary so that the roller shaft 91 can perform a one-touch fitting operation. In order to eliminate the necessity of holding down, a stopper 14 is provided on the shaft support frame 13 and the lower end of the hook piece 11 is formed into a slope, and the hook piece 11 is turned against the spring 15 by pressing the roller shaft 91 against the slope. , So that the two can be smoothly engaged with each other.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in the drawings, the hook main body is provided with a hook portion 1 at the upper end and a long hole 3 at the lower end by a plate material. In addition, soft rubber is integrally molded to form a substantially inverted U-shaped groove, and a substantially inverted U-shaped narrow groove is formed at the center of the U-shaped bottom. An opening / closing cap 5 in which a round bar is bent in a U-shape at the center of the back of the hook body, and a heat-shrinkable tube is fitted in the parallel portion.
The tip of the hook portion 1 is received in the U portion, the base end portion is rotatably fixed to the shaft 51, and the projecting piece 52 is provided on the shaft 51 so as to extend on the opposite side to the opening / closing cap 5 with the shaft 51 therebetween. To place. The protruding piece 52 has a central portion of a cap opening ring 6 integrated with an opening prevention piece 62 provided with a spring 61 for urging the stopper pin 21 provided in a position below the shaft 51 of the hook body in a contact locking direction. ,
One end of the link 7 is rotatably fixed to the shaft 53. The other end of the link 7 and the other end of the link 4 provided at the upper end of the roller unit 8
The shaft 31 is configured to be movable up and down within the elongated hole 3.

[0006] A cable holding roller portion 8 connected via the link 4 fixes the roller 9 to a shaft 91 between the distal end portions of a downwardly substantially U-shaped roller frame. One of the roller frames is connected to the tip with a hinge to fix the roller shaft,
The other roller frame is provided with a U-shaped notch at the tip from below, and the other end of the roller shaft 91 is accommodated in the notch.
The shaft 91 in the notch is supported by a hook piece 11 at one end of a shaft support member 10 provided to support the roller frame. Shaft support 10
Has a curved operation piece 12 which is operated by a tip hook of a telescopic operation rod P from the ground. That is, the center of the shaft supporting member 10 is supported by the roller frame, and when the operation piece 12 is pressed down, the hook piece 11 rotates to release the support of the roller shaft 91, and thus the roller 9 is supported.
Is pivoted downward at the hinge of the roller frame and the cable on the roller 9 is released.

[0007] In using the cable laying wheel of the present application, first, if the operation piece 12 of the cable holding roller portion 8 is rotated against a spring, the hook piece 11 that is continuously provided also cooperates with the roller shaft. Is disengaged and the roller is opened. If a small-diameter nylon rope or messenger wire is placed on the roller 9 and the roller 9 is pressed upward from below as shown in FIGS. 9 and 10, the roller shaft 91 slides on the slope of the hook piece, and the two move in one-touch operation. Engaged. Next, as shown in FIG. 5, the cap opening ring 6 is lifted by the telescopic operation rod P. When the cap opening ring 6 is lifted, the opening / closing cap 5 rotates in conjunction with the ring. Cap opening ring 6
Is fixed to a projecting piece 52 provided continuously with the opening / closing cap 5 with the shaft 51 interposed therebetween. When the projecting piece 52 is lifted by lifting, the opening / closing cap 5 is naturally lowered and the hook is opened. Therefore, the support wire W and the cable C can be locked. At the time of locking to the support wire W and the cable C, the support wire W first comes into contact with the inverted U-shaped groove in the hook portion, which serves as a guide effect, and then fits into the inverted U-shaped narrow groove at the bottom, Since the inverted U-shaped groove made of soft rubber is slightly smaller than the diameter of the support wire W, a fitting resistance is generated between the two, and the position on the support wire W is maintained. Further, by removing the operating rod P from the cap opening ring 6, the load of the roller portion 8 connected to the opening / closing cap 5 via the links 4 and 7 acts to rotate the opening / closing cap 5 in the hook opening closing direction. Further, the support wire W or the cable C is pressed from below, and the position on the support wire W is not moved by the inverted U-shaped narrow groove and the opening / closing cap 5. When the messenger wire has been developed by sequentially lifting and locking with the operating rod P as described above and arranging the messenger wire by a predetermined number between the construction diameters, the cable C is connected to the rear end to extend the wire. is there. The swing of the cable and the supporting wire during the extension is absorbed by a link disposed between the hook portion and the roller portion, and the locked state is maintained. When the extension is completed, the operation piece 12 of the roller unit of each wheel is rotated by the operation rod to rotate the roller shaft, and the cable C in the line holding space is taken out. Next, the cap opening ring 6 is lifted to release the engagement with the support wire W and to be recovered. When the cable C is taken out, if the operation piece 12 is lowered by the operation rod P as shown in FIG. 6, the load of the cable C applied to the roller portion 8 is eliminated, and a bounce occurs. The shaft 31 that suspends the roller unit 8 due to this bounce attempts to move above the long hole 3,
The recessed portion 62 is in a state in which it cannot be moved by fitting with the stopper pin 21. The bounce is absorbed by the link 4, the opening / closing cap 5 is not opened, and the state in which the support wire W is clamped can be maintained. (FIG. 7) FIG. 8 shows a case in which the locking object is large (the support wire W and the existing cable C).
The shaft 31 of the roller portion 8 moves above the long hole 3, and the shaft 31 and the link 7 provided on the projecting piece 52 at the base end of the opening / closing cap 5 try to rotate the opening / closing cap 5 in the opening direction. However, the opening preventing piece 62 of the cap opening ring 6 provided on the protruding piece 52 at the base end together with the link 7 is blocked by the stopper pin 21 provided on the hook body, and the opening / closing cap 5 does not rotate from a predetermined position, This prevents opening of the hook. FIG.
This is a state in which the support wire W and the existing cable C are locked as soon as their own weight is applied in the next stage. As described above, the unexpected rotation of the opening / closing cap 5 is prevented by the engagement of the opening preventing piece 62 provided on the same body as the cap opening ring 6 and the stopper pin 21 of the hook body, and the supporting wire W
In addition, by engaging the stopper pin 21 with the concave portion provided on the opening prevention piece 62, the position where the support wire W is pressed by the opening / closing cap 5 is fixed. is there. In other words, if a load such as a cable is applied to the roller portion 8, the shaft 31 connecting the two links is elongated.
At the bottom dead center, the recess of the opening prevention piece 62 engages with the stopper pin 21 to fix the situation where the opening / closing cap 5 pushes up the cable, the roller section 8 is unloaded, and the roller frame is The connecting shaft 31 of the link is elongated
Maintain the middle position of In this intermediate position, the opening prevention piece
The hook portion at the 62 end is engaged with the stopper pin 21, and the hook is closed in the state of FIG. The link connecting shaft moves to the top dead center in the long hole 3 only when the cap opening ring 6 shown in FIG. . With the above configuration, it is possible to prevent the pulling wheel for cable erection from dropping due to the swing of the wire at the time of taking out the cable C and at the time of extending the wire, and to prevent damage to the pulling wheel and a secondary disaster to workers on the ground. be able to.

[0008]

As described above, by adopting the gold wheel of the present invention, it is possible to reduce the diameter of the support wire and the diameter of the obsolete telephone line when the new line is extended or the existing line is replaced. Regardless of the extension, it can be securely locked regardless of whether it is extended on flat ground or sloping ground. Further, the wire is securely locked even under the condition of swinging of the wire at the time of extension or bouncing at the time of collection, so that the wire does not fall off the wire and fall to the ground. Therefore, it is possible to prevent damage to the wheelbarrow and harm to workers and pedestrians on the ground due to the fall seen in the past, and safely extend the cable,
Efficient construction is possible.

[Brief description of the drawings]

FIG. 1 is a front view of the present application.

FIG. 2 is a left side view of the present application.

FIG. 3 is a perspective view of the present application.

FIG. 4 is a front view of a part of the locking portion of the present invention, which is cut away.

FIG. 5 is a front view of a suspended state of the present application.

FIG. 6 is a hanging state diagram of the present application before the roller unit is opened.

FIG. 7 is a hanging state diagram after a roller unit is opened according to the present application.

FIG. 8 is a hanging state diagram after the roller unit is opened according to the present application.

FIG. 9 is an explanatory front view of the roller portion one-touch operation of the present application.

FIG. 10 is an explanatory left side view of the roller portion one-touch operation of the present application.

FIG. 11 is an explanatory view of a conventional roller unit.

FIG. 12 is a drawing showing the state of extension of a conventional gold wheel.

[Explanation of symbols]

 1 Hook 2 Locking hook 3 Slot 4 Link 5 Opening / closing cap 6 Cap opening ring 7 Link 8 Roller 9 Roller 10 Shaft support 11 Hook piece 12 Operation piece 13 Shaft support frame 14 Stopper 15 Spring 21 Stopper pin 31, 51,53 axis 52 projecting piece 61 spring 62 release prevention piece 91 roller shaft C cable P operation rod W support wire

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kiyofumi Maruoka Two Fujii Electric Works Co., Ltd. at 1573 Kami-Takino, Takino-cho, Kato-gun, Hyogo

Claims (1)

[Claims] An opening / closing cap (5) is provided at the center of a hook body having a hook (1) at an upper end and an elongated hole (3) at a lower end. The base end is rotatably fixed to a shaft 51, and a protruding piece 52 is provided on the opposite side of the open / close cap 5 with the shaft 51 interposed therebetween.
In addition, a cap 61 is provided which is provided with a spring 61 for urging the stopper pin 21 provided on the hook main body in the contact and locking direction, and which is integrated with an opening preventing piece 62 having a hook-shaped tip and having a recess at a predetermined position near the base end. A central portion of the opening ring 6 and one end of the link 7 are rotatably fixed to the shaft 53, and the other end of the link 7 and the other end of the link 4 provided at the upper end of the roller portion 8 are connected to each other in the elongated hole 3. The shaft 31 stops so that it can move and rotate freely, and if the shaft stop 31 is located at the bottom dead center in the elongated hole 3, the opening / closing cap 5 closes the inside of the hook to the minimum range, and if it is located at the middle point, the opening is prevented. A cable erection wheel, wherein the hook 62 is in a maximum closed state where the piece 62 and the stopper pin 21 are engaged, and the hook is opened when located at the top dead center.