JPH0242008Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a wire extension yoke used when extending electric wires to a steel tower or the like.

(Prior Art) Various improvements and proposals have been made to this type of yoke in the past. As is known from Japanese Utility Model Publication No. 52-47754, for example, a counterweight that prevents twisting of running electric wires, etc. is a link having a messenger wire retention part and an electric wire retention part at both ends. They are common in that they are simply hinged to the connecting body so as to hang down from the metal fitting.

(Problems to be Solved by the Invention) The counterweight as described above is entirely suspended vertically from the middle of the link connecting body which is tensioned horizontally in a straight line during wire extension. For this reason, when the link connecting body passes the metal wheel which is a guide for wire extension, the counterweight is guided by the metal wheel and follows the link connecting metal fitting, but the counterweight is placed in a hanging position where it cannot receive any upward force. It collides with the car and must be rotated to a horizontal position along the linkage.
This provides a relatively large resistance to the link connecting fittings passing through the metal wheel, and hinders the smooth progress of the wire extension.

The counterweight is divided into several parts and connected so that they can be bent in one direction, and although it is fine if they are sequentially placed along the link connecting fittings, the entire counterweight is in a hanging position and cannot receive the upward force. There is no change in the fact that the counterweight will collide with the metal wheel, and the counterweight will have to forcefully change its position and forcefully pull the weight through the metal wheel. This still exerts considerable resistance to the passage of the link assembly through the metal wheel.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention has a messenger wire retention part at the tip and an electric wire retention part at the rear end, and bends in a certain direction. In an extended yoke that includes a link assembly in which a large number of links are freely connected and a counterweight suspended from a predetermined position in the middle of the link assembly, it is divided into several parts and bent in the same direction as the link assembly. It is characterized in that the upper end weight of the freely connected counterweight is mounted in the middle of the link connection body so that it has an inclined posture in which the trailing weight side is lowered when the counterweight is suspended.

The upper end weight attached to the link connecting body may be fixed to the link of the link connecting body in the inclined position, and the upper end weight may be fixed to the link of the link connecting body in the tilted position, and the upper end weight may be fixed to the link of the link connecting body in the tilted position, and
It may be movably connected between the states along the link.

Further, it is desirable that the respective weights of the counterweight are connected to each other in such a manner that the bending angle of the succeeding weight with respect to the subsequent weight is restricted to be larger than a right angle.

(Function) The upper end weight of the counterweight is suspended from the link connection body in an inclined position, so that most of the pushing force when the link connection body comes into contact with the metal wheel that is about to pass is pushed up. The weight is received as a force, and the weight wheel is easily passed over the metal wheel while accompanying the link connecting body, and the subsequent weight is allowed to continue along the metal wheel, so the resistance given to the link connecting body passing through the metal wheel is small.

Furthermore, if the bending angle between each connected weight of the counterweight is set larger than the right angle,
The passage resistance reducing effect is also sequentially exerted between the weight that is pushed up to pass through the metal wheel and the weight that is placed along the link connecting fitting and the weight that follows it.

(Example) Fig. 1 to Fig. 5 show an embodiment of the present invention, and as shown in Fig. 1, the wire retaining part 1 is at the tip and the wire extension object is at the rear end. A link connecting body 3 having a retaining part 2 for electric wires,
The connecting body 3 includes a counterweight 4 suspended in the middle thereof. The link connecting body 3 has a round bar-shaped short link 3b as shown in FIG. Leading portion 3c connected so as to be flexible
It is said that In addition, the electric wire retaining portion 2 side including the link part from which the counterweight 4 is suspended has a horizontal width of 1/3 narrower than the link 3b and a longer link 3d of about 1.5 times the length than the link 3b. The wire extension part 3 is connected so as to be able to bend freely in the vertical direction.
It is said to be e.

As shown in FIGS. 3 and 5, the counterweight 4 has a groove 4a on the side opposite to the link connector 3 into which the link connector 3 fits, and is divided into seven weights 4b. These are connected by horizontal pins 7 via small links 6 on both left and right sides between their opposing ends. Upper end weight 4b
is attached by a shaft 8 to the distal end of the distal end link 3d of the link connecting body extension part 3e, and the rear end link 3b of the link connecting body leading part 3c.
It is formed into a substantially conical shape that smoothly continues with the following large diameter weight 4b, and is fixed to the link 3d by welding or the like in a gently inclined position of about 30 degrees with the rear end downward. The tip end side of the upper end weight 4b of the link 3d is formed as an upward head 3d1 that is gently inclined upward, and the rear end link 3 of the link connecting body leading part 3c
The upper end weight 4b is connected to the rear end, and when the rear end link 3 is inclined along the metal wheel when entering the metal wheel, the upper end weight 4b continues in an inclined posture close to that.

The link 6 connecting each weight 4b is connected to the rear end of the front weight 4b by a pin 7 in a rotation prevention groove 4c as seen in FIG. The tip is connected by a pin 7 within a rotation allowance groove 4d that allows rotation within a certain range as shown in FIG. The opposite ends are aligned so that the corners can be seen between the upper end weight 4b and the second stage weight 4b in Figures 1, 2, and 3, and between the second stage weight 4b and the third stage weight 4b. The angle is set to approximately 30 degrees by abutting each other at the ends.

As a result of the above-mentioned connection structure, the counterweight 4 is suspended from the link connection body 3 as shown in FIGS. 1 and 2, and the horizontal link connection body 3
A smooth bending state continues from a tilted position that gently follows the curve to a vertical position. As a result, when the link connecting body 3 enters the metal wheel from its leading part 3c, the leading part 3c adapts to the metal wheel by its link connecting structure, and the counterweight 4 also moves its upper end. The weight 4b and the second stage weight 4b fit together easily, and while receiving sufficient pushing up force, the weight 4b moves upward onto the gold wheel with little resistance. At the stage when the second stage weight 4b contacts the metal wheel, it is pushed by the metal wheel, fits into the extended wire portion 3e of the link connecting body 3, takes a horizontal position along it, and passes the metal wheel without difficulty. , upon this upward movement to the horizontal position, 3
The weight 4b on the third stage is lifted, but due to bending regulations with the third weight 4b, the third weight 4b is kept in a diagonal position with respect to the horizontal second weight 4b. Make it easier for cars to pass.

This weight 4b waits for the inclination of the succeeding weight 4.
This is done in the same way for all of the weights 4b, and all the weights 4b pass through the metal wheel without difficulty, and do not prevent the link connecting body 3 from passing through the metal wheel.

FIG. 6 shows another embodiment of the present invention, in which the upper end link 4b of the counterweight 4 is connected to the shaft 8 with respect to the link 3d of the link connecting fitting extension 3e.
The maximum downward movement position of the counterweight 4 in the suspended state is determined by the rotation range regulating recess 11 on the side surface of the link 3d and the groove 4 of the upper end weight 4b.
A is regulated by engagement with a pin 12 on the inner surface.

As a result, when the counterweight 4 is suspended, the upper end weight 4b is located between the rear end link 3b of the link connecting fitting leading part 3c and the second stage weight 4b, and they are continuous in a smoothly bent state. The upper end weight 4b can move up along the link connecting body 3 to the same extent as other succeeding weights 4b.
Compared to this, the upper end weight 4b becomes a local protrusion, which increases the passing resistance at a certain point when the link connector 3 passes through the metal wheel. Therefore, it is possible to avoid the occurrence of abnormal noises. Note that the present invention is not limited to the above-mentioned embodiment, and various designs may be made within the scope of the present invention, such as replacing the link 3b of the link connecting body leading portion 3c with a slightly longer arc-shaped link which is already known.

(Effect of the invention) According to the invention, when the upper end weight of the counterweight suspended from the middle of a horizontal link connection body assumes an inclined posture and comes into contact with a metal wheel that the link connection body is about to pass, Most of the pushing force is received as a push-up force, and while the metal wheel rides on the metal wheel without difficulty, the following weight continues with a bending angle that is more than perpendicular to it, so the upper end of the counterweight follows the link connection body. It is pulled into the metal wheel smoothly, and the lower part naturally follows the circumferential surface of the metal wheel as it enters the upper end of the metal wheel, so the lower part is also smoothly drawn into the metal wheel. As a result, the counterweight does not exert much resistance to the passing of the link connecting body through the metal wheels, and the wire extending work can be carried out smoothly and quickly.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention;
The figure is an enlarged side view of the main part, Figure 3 is a perspective view of the main part,
Fig. 4 is a side view of a part of the counterweight as seen in cross section, Fig. 5 is a cross-sectional view of a part of the counterweight, and Fig. 6 is a side view of the main part showing another embodiment of the present invention. It is a diagram. DESCRIPTION OF SYMBOLS 1... Messenger wire retaining portion, 2... Electric wire retaining portion, 3... Link connection fitting, 4... Counterweight, 4b... Weight.

Claims (1)

[Scope of utility model registration request] A link connecting body having a messenger wire retaining part at the tip and an electric wire retaining part at the rear end, and a link connecting body in which a number of links are connected so as to be flexible in a certain direction, and In the wire extension yoke equipped with a suspended counterweight, the upper end weight of the counterweight is divided into several parts and connected so as to be flexible in the same direction as the link connecting body.
A wire extension yoke characterized in that it is installed in the middle of a link connection body so that the trailing weight side has an inclined position in which the counterweight is suspended.