JPH0224659Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tool that allows an insulating cover with an open bottom to be easily fitted onto an existing bare trolley wire.

In order to supply power to mobile equipment such as traveling cranes and hoists, a trolley wire is stretched along the direction of movement, and a current collector supplies the necessary power. However, since this stretched trolley wire is a bare wire, if a worker or an object comes into contact with it, an electric shock may occur. It is not desirable to use a safety trolley wire, and current regulations suggest the use of an insulated trolley wire to prevent electric shock accidents, and various types of covers have been proposed and put into practical use.

The present invention provides a tool that allows the insulating cover to be simply and reliably fitted onto the existing bare trolley wire.

The present invention will be explained below based on the illustrated embodiments.

In the figure, K is the insulation cover C on the bare trolley wire T.
This tool is used to fit the handle mounting piece 11 into the body frame 1 by bending one or both ends of a band-shaped metal plate or synthetic resin plate at a substantially right angle as shown in the drawing. It consists of a push roller 4 and a press roller 5, which are rotatably provided oppositely to two shafts 2 and 3 installed in the main body frame, and a handle 6 provided on the handle attachment piece of the main body frame. be.

Two shafts 2 and 3 are installed in the main body frame 1, and these shafts 2 and 3 are installed opposite each other with a required interval, that is, a distance that allows even a large insulating cover to be inserted between the opposing rollers 4 and 5. At the same time, a push roller 4 is provided on one shaft 2, and a press roller 5 is provided on the other shaft 3 so as to be rotatable and sometimes replaceable. The push roller 4 is made of synthetic resin or other metal, and has a cylindrical boss portion 41 that is fitted onto the shaft 2 and rotates smoothly, and a central outer periphery of the boss portion. It consists of a roller part 42 that protrudes into a disk shape, and the outer peripheral surface of this roller part 42 is formed into a concave arc surface 43.
It is designed so that it can easily come into contact with a part of the outer peripheral surface of the trolley wire. Further, the pressing roller 5 is made of synthetic resin or metal like the pushing roller 4, but it is preferable to make it made of synthetic resin from the viewpoints of smooth rotation, insulation, protection of the cover, etc. This presser roller 5 has flanges 51, 51 on both ends, and a drum-shaped curved surface 5 between the flanges 51, 51.
2, and a shaft hole through which the shaft 3 is inserted is bored in the center.

The push roller 4 and the press roller 5 are connected to shafts 2 and 2 respectively.
and 3, when supported rotatably, the centers of the axes perpendicular to the axes of both rollers are aligned, that is, the roller portion of the push roller faces the center of the drum surface of the presser roller. .

A handle 6 is provided on the handle attachment piece 11 of the main body frame 1, but this may be of a fixed type, or a screw hole 12 may be formed in the handle attachment piece 11 and the handle 6 may be provided with a screw hole 12 protruding from the tip of the handle 6. The screw 61 is screwed together, and the nut 7 is screwed onto the screw 61 so that it can be attached and detached. When providing a removable handle in this way, for example, as shown in Figure 3, handle mounting pieces are formed at both ends of the main body frame, and when installing the insulating cover from a position below the trolley wire, the handle should be attached as shown in the solid line. If work cannot be done from a large crane, from the ground, or from below the trolley line, the handle can be installed above as shown by the chain line, and the installation work can be done from above the trolley line.

A handle is provided at either end of the main body frame, but this can be changed depending on the mounting operation from the upper or lower side of the trolley wire.
Presser foot row 5 is at the top.

When attaching the elastic insulating cover C, which has an opening at the bottom that allows the current collector to be inserted and slid, to the existing bare trolley wire T using the fitting tool configured as described above, first insert the bare trolley wire Arrange an insulating cover C along the top of the wire T, and insert the fitting tool from the side of the bare trolley wire and the insulating cover between two opposing rollers so that the bare trolley wire and cover are positioned. urge

Next, as shown in FIG. 1, move the handle 6 at arrow A so that the drum surface of the presser roller is in contact with the top surface of the insulating cover, and the roller part of the push roller is in contact with the trolley wire.
lean in a direction. When the tool is slid in the direction of arrow B along the trolley wire while maintaining this state, the insulating cover is naturally attached to the bare trolley wire. This state is shown in FIG. 2, where A shows the state before fitting, and FIG. 2 B shows the state after fitting.

At this time, the angle of inclination of the fitting tool K with respect to the trolley wire varies depending on the size of the bare trolley wire insulating cover, and of course, the insulating cover of a size corresponding to the diameter of the bare trolley wire is used.

According to the present invention, the top surface of the insulating cover is held down by a presser roller whose outer circumferential surface is hourglass-shaped, and a push roller opposing this roller is inserted into the opening of the insulating cover to force the trolley wire into the cover. Since the fitting tool is fitted into one piece with the bare trolley wire, it can be installed easily, reliably and quickly by simply sliding the fitting tool along the bare trolley wire, allowing work at heights to be carried out safely and without removing the insulating cover. It has the advantage that it can be used regardless of size.

[Brief explanation of the drawing]

FIG. 1 is a front view of the device in use, FIG. 2 is a side view thereof, and FIG. 3 is an external perspective view. DESCRIPTION OF SYMBOLS 1...Body frame, 11...Handle mounting piece, 12...Screw hole, 2, 3...Shaft, 4...Press roller, 41...Boss part, 42...Roller part, 4
3... Concave arc surface, 5... Presser roller, 51... Flam part, 52... Arch surface, 6... Handle, 61...
Screw, 7... Nut, K... Fitting tool, T... Trolley wire, C... Insulating cover.

Claims (1)

[Scope of utility model registration request] A main body frame 1 is formed by bending one or both ends of a strip plate at a substantially right angle using a fitting tool used to fit an elastic insulating cover into a bare trolley wire with an opening at the bottom, and a handle attachment piece 11; An insulating cover fitting consisting of a push roller 4 and a press roller 5 that are rotatably provided opposite to each other on two shafts 23 installed in the main body frame, and a handle 6 provided on the handle attachment piece of the main body frame. tool.