JPH03135315A - Driving metal wheel gear - Google Patents

Abstract

PURPOSE:To reduce a work area without requiring a part of equipments at a wire feeding place and an other end taking-up place on the wire extending work of a wire, by supporting the wire with a caterpillar to be horizontally moved within a vertical surface, and by composing the caterpillar for pressing the wire down with tension rollers from the upper side. CONSTITUTION:A caterpillar consists of a chain 5 and segments 6. The chain 5 is engaged with sprockets 4, and can be moved along a guide edge 3b via the segments 6. On the front side surfaces of the segments 6, V-shaped channels are arranged, and on the rear side surfaces, both legs 6a are projected, and by both the legs, the segments 6 are engaged with the chain 5. The lower surface of a holding frame 7 is formed in a recessed circular shape, and is provided with pressing-down rollers 8 for enabling a wire E on the caterpillar to be pressed down, and pressing-down hydraulic devices C are fitted on. By a hinge section, a sub-frame 2 is rotationally moved, and the wire E is positioned on the segments 6 and is closed. By the working of a hydraulic motor M and the hydraulic device C, traction wheels and control wheels at the starting points of extended wires are not needed.

Description

[Detailed Description of the Invention] [Industrial Application Field] In electric wire extension work, driving force is imparted to a metal wheel suspended from a steel tower, thereby improving the equipment at the wire sending point and the other end winding place. The purpose of this is to eliminate the need for a portion of the work area and reduce the work area.

[Prior Art] Wire extension work requires a vast working area at the sending point and the winding area at the end of the wire, but this area is often difficult to secure due to slopes or other conditions.

As a countermeasure for this case, Japanese Patent Laid-Open No. 64-26315 is known. The electric wire is held between a pair of caterpillars placed opposite each other in a horizontal plane, and this is used as auxiliary driving force, thereby eliminating the need for a brake car at the sending station and for hauling the end winding. However, in this device each segment of the track is supported on a vertical axis. For this reason, support rollers are placed before and after the caterpillar to adjust the vertical position of the electric wire as it passes through the caterpillar. That is, there is a problem in that the support roller must be placed above or below the electric wire, depending on the height of the adjacent steel tower. If the support roller is on top, it is not allowed to reverse the caterpillar to adjust the slack, as there is a risk that the electric wire may fall off the caterpillar.

Since the electric wire is held between 2,000 vertical planes formed by opposing caterpillars, a strong holding force is always required to feed and send out the electric wire. Therefore, when passing large-diameter objects such as connection clamps and wire extension clamps, the clamping force becomes excessive and may cause trouble to the device.

[Means for Solving the Problems] All of the above-mentioned problems are caused by sandwiching the electric wire between two opposing vertical planes. Therefore, in the present invention, the electric wire is supported by caterpillars that move horizontally in a vertical plane, and the electric wire is pressed down from above by a pressing roller. This solves all the problems mentioned above.

[Example] The drawings will be explained. The main frame 1 is suspended from a steel tower at its upper end 1a, and is open at the bottom. One end 2a of the subframe 2 is hinged to the lower end of the main frame, and the other end 2b can be fixed to the main frame with a through bolt. The guide frame 3 is formed by connecting a pair of parallel plates each having a convex arcuate upper surface with a connecting member 3a, and is fixed to the sub-frame 2.

The guide frame is provided with a guide edge 3b along the outer periphery. 1
The pair of Subroket Soto 4 is pivoted to the rain end of the guide frame,
One of them can be driven by a hydraulic motor M.

The chain 5 engages with the sprocket 4 and is movable along the guide edge 3b via a segment 6, which will be described below. The segment 6 is provided with a ■-shaped groove on its surface, and both legs 6a protrude from the back surface, and these legs engage with the chain 5 to form a caterpillar.

The V-shaped groove supports electric wires at the bottom, and can support large diameter items such as connection clamps at the center. The segments are provided with rollers 6b on both sides, which roll on guide edges 3b. The pressing frame 7 has a concave arc-shaped lower surface, is provided with a rolling down roller 8 capable of rolling down the electric wire E on the caterpillar, and is attached with a rolling down hydraulic device C. If necessary, a plurality of rolling down rollers 8 may be connected with a chain so that they can be rotated by another hydraulic motor (not shown).

[For f\-] This device is configured as described above. Rotate the sub-frame at the hinge part, position the electric wire E on the segment, and close it. When the hydraulic motor M and the hydraulic system C are activated, this device assists the action of the reel winder at the end of the line, eliminating the need for towing at the end of the line. Furthermore, since the electric wire coming out from the drum is braked by this device, a brake wheel at the starting point of the wire is not required.

[Effects] Since the wire moves on the caterpillar while being rolled down by the rollers, there is no need to provide conventional support rollers at the entrance and exit of this device.Even if the wire becomes loose, it will not fall from the device. By making the ■-shaped groove of the segment appropriate, it is possible to pass large diameter connection clamps etc. without difficulty.

[Brief explanation of the drawing]

FIG. 1 is a front view of the present invention, and FIG. 2 is a side view of the same. 1... Main frame, 2-... Sub frame, 3... Guide frame, 4...
... Sprocket, 5...-Chain, 6... Segment, 7... Pressing frame, 8... Rolling down roller, E... Electric wire, C-- Hydraulic cylinder.

Claims (1)

[Claims] The main frame is suspended from the steel tower at its upper end and opens downward; the sub-frame has one end hinged to the lower part of the main frame and the other end can be locked to the lower part of the main frame via the guide frame described below; and the upper surface has a convex arc shape. a guide frame formed by connecting a pair of parallel plates with a connecting member and fixed to a sub frame;
It consists of a pair of sprockets that are pivotally supported at both ends of the guide frame and a driving device attached to one shaft, and a plurality of segments that can support electric wires on the surface are connected to a chain that meshes with the sprocket, and runs along the outer edge of the guide frame. A driving metal wheel device consisting of a movable caterpillar and a pressing frame whose lower surface has a concave arc shape and is equipped with a roller that can press down the electric wire on the caterpillar and is attached with a hydraulic device for pressing down.