JP2651699B2 - Reciprocating running board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a running board used for wire drawing work, and can be used as it is regardless of the direction in which a steel tower wheel is reciprocated. Is what you do.

[Prior Art and Problems] The wire drawing work is performed by connecting an electric wire E to a terminal of a wire drawing wire R wound by a winch M via a running board B as shown in FIG. The running board is for preventing the twist of the electric wire from being returned by towing.

As shown in FIG. 6, a known running board B has a pair of mounting links T at an appropriate interval in a connector row C connected to a wire R at a front end and a wire E at a rear end.
, The weight rows W are respectively hung down, and an arcuate link Y is adjacent to the front of the mounting link in the traveling direction. The bow-shaped link Y is a mounting link T for entering the gold wheel K.
Automatically adjust the posture of the camera. The reason why the weight row W is made into two rows is that the weight row is combined with the connector row during the passage of the wheel and loses the function of preventing the return of twist, but at this time either one of them works effectively. is there.

Each of the members forming the weight row has a U-shaped cross section, while the members forming the connector row are rod-shaped pieces that can enter the U-shaped cross section. Therefore, as shown in FIG. 6, the weight row towed rightward along the outer periphery of the wheel K, stores the connectors one after another, combines them, rides on the wheel, and then hangs down again. However, in this figure, the running board cannot move the gold wheel to the left.

However, in the wire drawing operation, the sag of the electric wire is made closer to the required one while repeating the winding and rewinding of the winch. With the running board being able to move in only one direction, a proper distance must always be maintained between the tail end of the running board that moves forward and backward and the steel tower wheel to perform this adjustment smoothly. Assuming that the adjustment of the sag is completed in FIG. 7, a length 1 remains between the tail end of the running board and the steel tower wheel. Finally, this part is cut off to make scrap. Before that, the running board had to be removed in the air away from the tower, which was a very difficult task.

[Means for Solving the Problems] The running board can freely reciprocate on the steel tower wheel, thereby minimizing the interval 1. Therefore, the weight member is changed from the conventional U shape to the H shape. That is, the connector fits into one side of the weight in the going direction, and fits into the other side in the going direction. The center side of the H shape is a spring plate having an appropriate flexibility, and a recess is provided on the lower surface of the connector to allow the spring plate to fit therein. The bow-shaped link is adjacent to both sides of the mounting link so that the attitude can be controlled during the reciprocating process.

Example A drawing will be described. The present invention provides two mounting links 1, four bow links 2, three connector rows 3, 4, 5, 2,
It consists of a series of weight rows 6.

The bow links 2 are pivotally mounted on both sides of the mounting link 1, and two sets thereof are connected in series via a connector row 3.
One of the outer ends of each of the bow links 2 on both sides is connected to the extension wire R via the connector row 4 and the other is connected to the electric wire E via the connector row 5. A weight row 6 is hung on each of the pair of mounting links 1.

As shown in FIGS. 4 and 5, each member of the weight row 6 is formed by connecting the central portions of the left and right links by a leaf spring 7, and the left and right links are separately pivotally connected with pins. Each member of the connector rows 3, 4, and 5 is formed of a bar-shaped piece as shown in FIGS. 2 and 3 and is connected to the members of the weight row 6 one after another at the same pitch and by a pin. The lower part is provided with a recess 8 that allows the leaf spring 7 to fit therein. The bow-shaped link 2 is a curved rod-shaped body and has a length along the curved surface thereof, which is an integral multiple of the pitch.

Since the present invention is configured as described above, as described above, the connector member fits into one surface of the weight member in the outward process, and fits into the other surface in the return process, and the two members are combined to form the wheel without trouble. Get over.

The leaf spring 7 of the weight member not only joins the left and right links, but also facilitates the union and separation of the connector and the weight by its elasticity.

[Effect] Since the running board can be reciprocated in the vicinity of the steel tower in adjusting the sag of the electric wire, the work of removing the running board after stopping the electric wire becomes easy, and the terminal electric wire to be cut can be short.

[Brief description of the drawings]

1 is a front view of the present invention, FIG. 2 is a front view and a plan view of a connector, FIG. 4 is a front view and a plan view of a weight, and FIG. 6 is a front view of a conventional running board. FIG. 7 is an explanatory view of a conventional construction. 1 mounting link 2, bow link, 3, 4, 5 connector row, 6 weight row, 7 leaf spring, 8 recess, R wire extension wire, E wire , M ... winch,
B: Running board, C: Connector, T: Mounting link, W: Weight, Y: Bow link, K: Gold wheel.

Claims (1)

(57) [Claims] 1. A two-piece linear structure in which another linear body having the same structure is connected to a linear body in which an arcuate link and a connector row are pivotally connected in this order on both sides around a mounting link, respectively. One end of the body is fixed to the electric wire and the other end is fixed to the wire, and a weight row is pivoted down from the center of each attachment link of the two linear bodies, and each link of the weight row is connected to either the left or right connector. A reciprocating running board characterized in that an H-shape having a leaf spring at the center is provided so that each link of the connector row is provided with a notch corresponding to the leaf spring.