JPS6233477Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a remotely controllable cam long.
In a normal come-along, as shown in the side view and top view of FIGS. 1A and B, the wire is gripped by the outer surface of the wedge 2 sliding into the inner surface of the main body 1, which has a mutually tapered shape. The diameter D of the inner surface of the wedge 2 is reduced to grip the electric wire, but if there is rust or sand on the inner surface of the main body 1 or foreign matter such as rust or sand on the outer surface of the wedge 2 that is in contact with this inner surface, the coefficient of friction will decrease. increases, and before the wedge 2 slides into the inner surface of the main body 1, slipping occurs between the wire and the inner surface of the wedge 2, and the wedge 2 cannot grip the wire, creating a dangerous situation. To remove, move to the specified position.
It is extremely dangerous because it involves riding on electric wires.

This invention improves the conventional come-along mentioned above, and when used, there is no slippage between the wire and the wire, and there is no need for the operator to hover over the wire, making it extremely safe and reliable. The idea is to provide a come-along that can be operated remotely.

The present invention will be explained below with reference to a front view and a partially sectional side view of an embodiment of the present invention shown in FIGS. 2A and 2B, and an external view attached to an electric wire shown in FIG.

In the figure, 1 is the main body of the come-along, and the inner surface 9 is partially tapered. 2,
2' is a wedge, and the wedges 2, 2' are the inner surface 9 of the main body 1.
3 is a wedge support pin, and 3' is a connecting pin that connects the main body 1 with the handle 4. Then, the main body 1
In the more protruding support part, the end surface of the cam structure 8 formed at one end of the handle 4 is connected to the wedge 2,
The handle 4 is connected to the main body 1 so as to face the end surface of the handle 2'. Reference numeral 5 denotes a wedge stick, one end of which is rotatably attached to the back surface of the main body 1 by a support pin 3;
In the middle, with a guide groove, a branch pin 3''
The wedge 2 is engaged with the wedge 2, and the other end of the wedge removal rod 5 is made to protrude to the side of the main body 1. 6 is an electric wire, 7 is a tapered pin, 7' is a straight pin,
The straight pin 7' is used as a support shaft for the main body 1 which can be opened and closed by a hinge 11, and the tapered pin 7 is used to open the upper part of the main body 1 and is used to close the main body 1 after inserting it into the electric wire 6. This is a closure pin.

Insert the electric wire 6 into the holding hole formed by the two wedges 2 and 2', close the main body 1 with the taper pin 7, push it out onto the electric wire 6, and use a winch etc. to push the wire attached to one end of the handle 4. When you pull it,
The handle 4 rotates around the connecting pin 3', and the handle 4 rotates around the connecting pin 3'.
The end face of the cam structure 8 formed at the end of the cam structure 8 simultaneously presses the end face of the wedges 2, 2' facing the cam structure 8, thereby pushing the wedges 2, 2' into the partially tapered inner surface 9 of the main body 1. When the tension is gradually increased, the cam structure 8 gradually pushes the wedges 2 and 2' at the same time, and the wedges 2 and 2' pass through the predetermined position, that is, the range of the initial unstable pushing, and are stably gripped. When the tension is reached at a position where the tension is maintained and the tension is further increased, the electric wire 6 is gripped by the sliding of the main body 1 and the wedges 2, 2'. Furthermore, the second
As shown in FIG. B, during this time, the wedge 2 slides on the tapered inner surface 9 of the main body 1 with its tapered outer surface. moves together with wedge 2. After tensioning, to remove the main body 1 and wedges 2, 2' from the wire 6, loosen the handle 4 and pull the wedge removal rod 5.
2' returns on the tapered inner surface 9 of the main body 1, and the engagement between the wedges 2, 2' and the electric wire 6 is released. If a wire 10 or the like is attached to the wedge removal rod 5, the wedge can be removed by remote control, and the wedge can be pulled back to the user's hand, allowing the worker to hang on the wire for installation and removal. This is no longer necessary, and the safety effect is extremely large.
The tensile force during operation can also be adjusted by changing the lengths of the handle 4, wedge bar 5, and wire attachment holes.

According to the present invention, there is only one handle, which makes it easy to handle, and in addition, when inserting the wedge into the inner surface of the main body using the conventional come-along method, the wire and the wedge are separated depending on the conditions of the outer surface of the wedge and the inner surface of the main body. There was a high risk that slipping would occur first, but according to the present invention, even if the coefficient of friction is somewhat large, the cam structure of the handle allows
Since the structure allows for forced insertion of two wedges at the same time from the beginning of the insertion head, there is no slippage between the wires and the work efficiency is improved in actual use.
This provides a highly safe come-along.

[Brief explanation of the drawing]

FIGS. 1A and 1B are front, side, and top views of an example of a conventional come-along. FIGS. 2A and 2B are a front view and a partially sectional side view of an embodiment of the present invention. FIG. 3 is an external view of the embodiment shown in FIG. 2, showing attachment to electric wires. 1...Come-along body, 2, 2'...Wedge,
3,3″...Support pin, 3'...Connection pin of the handle of the main body, 4...Handle, 5...Wedge bar, 6...Electric current, 7...Taper pin, 7'...Straight pin, 8...Cam structure, 9...Inner surface of main body, 10...
...Wire, 11...Hinge.

Claims (1)

[Scope of utility model registration request] The end surface of the wedge inserted into the inner surface of the come-along main body is arranged so that the end surface of the cam structure at the end of one handle supported by the main body is opposed, and a wedge extraction rod is connected to the wedge, and the wedge is inserted into the inner surface of the come-along main body. A come-along that can be attached to and removed from electric wires by operating a wedge stick.