JP6749634B2 - Pulley rubber liner mounting jig - Google Patents

Description

The present invention relates to a rubber liner mounting jig for a pulley, which is used when a rubber liner is mounted on a peripheral portion of a pulley provided in a cableway or a steel railway.

A cableway or a steel cable railway is a facility for transporting a cable by straddling a cable between stops and connecting a carrier or a vehicle to the cable to drive the cable. In cableways and steel rope railways, a relatively small diameter receiving wheel with a diameter of about 200 to 500 mm is placed in the track to support the rope, and a large pulley with a diameter of about 2000 to 6500 mm is placed at the stop. Then, it guides, turns, and drives the cord.

Generally, the outer periphery of the receiving ring and pulley is to protect the rope and reduce the vibration and noise generated by the contact of the rope, and increase the friction coefficient in the pulley that drives the rope. It is equipped with a rubber liner for the purpose. The receiving ring having a small diameter is generally configured such that a rubber liner formed in a ring shape is fitted onto the wheel core of the receiving ring. On the other hand, a large pulley has a groove formed in a predetermined shape on the outer peripheral portion, and a number of block liners formed in a block shape matching the shape of the groove are inserted therein, or the block liner is combined with the groove shape. It is constructed by inserting one rubber liner having the same length as the outer peripheral length of the pulley, and the mainstream is the latter one rubber liner (for example, see Patent Document 1).

Japanese Utility Model Publication No. 57-44137

The rubber liner of the above-mentioned receiving ring and pulley is repeatedly contacted with and separated from the rope due to the operation of the equipment, and wear progresses due to long-term use, and it is necessary to replace it when it reaches the limit. In this case, although the receiving wheel is small, removal and transportation and replacement of the rubber liner are relatively easy.However, the large pulley is large in size to be removed and transported, and it is necessary to replace the rubber liner at the factory. A large amount of money will be incurred if you carry it in to the same place.

The present invention has been made in view of such circumstances, and the rubber liner can be easily attached to the pulley while the pulley is attached to the device or the like, or in the vicinity (on site) where the pulley is removed. An object is to provide a jig for mounting a rubber liner on a pulley.

In response to this problem, the present invention is a jig for mounting a rubber liner on the rim portion of the outer periphery of a pulley, wherein the jig includes a lever rotatably provided at its end with a roller for pressing the rubber liner. A hook that is fixed to both side surfaces of the lever and extends to the roller side, and a stopper that is detachably attached to a tip portion of the hook and that engages with the rim portion are provided.

According to the present invention, it is possible to easily attach the rubber liner to the pulley on the site, and it is possible to cope with the shape of the rim portion of various pulleys.

Front view of pulley Sectional view taken along the line AA in FIG. Enlarged sectional view of the rim Front view of rubber liner mounting jig Sectional view taken along the line AA in FIG. Front view of the rubber liner mounting jig during use Side view of the rubber liner mounting jig during use

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. 1 is a front view of the pulley, and FIG. 2 is a sectional view taken along the line AA in FIG. The pulley 10 is rotatably supported by a pulley shaft 13 via a bearing 12 inserted in a boss portion 11. The pulley shaft 13 is fixed by inserting both ends into bearings 14. A disk-shaped steel plate portion 15 is formed on the outer circumference of the boss portion 11, and a rim portion 16 is formed on the outer circumference of the steel plate portion 15.

FIG. 3 is an enlarged cross-sectional view of the rim portion 16. The rim portion 16 is formed with a groove 17 that opens in a concave shape in the outer peripheral direction. The groove 17 has an isosceles trapezoidal shape in which the side surface gradually expands from the groove bottom surface toward the outer peripheral direction, and is slightly folded back horizontally inward at a portion corresponding to the upper bottom surface of this isosceles trapezoidal shape. The surfaces are parallel to each other in the vertical direction and extend in the outer peripheral direction to be opened, and then both side surfaces are again inclined and opened so as to expand toward the outer periphery. A rubber liner 18 is fitted in the isosceles trapezoidal portion of the groove 17. The rubber liner 18 has the same cross-sectional shape as the isosceles trapezoidal shape of the groove 17, and is formed in an elongated shape so as to match the circumferential length of this isosceles trapezoidal shape, and is formed at the outer peripheral center position. The rope 19 is supported by the arcuate groove.

FIG. 4 is a front view of a rubber liner mounting jig for mounting the rubber liner 18 on the pulley 10, and FIG. 5 is a sectional view taken along the line AA in FIG. The rubber liner mounting jig 20 includes a lever 21, a first spacer 23, a second spacer 24, and a hook 25. The lever 21 is a plate-shaped member formed in an elongated shape, and has a shape in which the lower side of the lever 21 is wide and the width gradually narrows toward the upper side in FIG. The upper end of the lever 21 is formed to extend in the shape of a round bar, and the lower end has a hole 26 in which a pin 27 is fitted and fixed. Rollers 28 are rotatably provided at both ends of the pin 27. In this embodiment, ball bearings are used as the rollers 28.

In a lower portion of the lever 21, a projecting portion 22 is formed in a rectangular shape when projecting from both side surfaces in a front view, and the projecting portion 22 is linearly formed with three holes. A first spacer 23 and a second spacer 24, which have the same rectangular shape as the protrusion 22 and have different thicknesses, are arranged on both sides of the protrusion 22. Further, hooks 25 are arranged outside the second spacer 24. There is. The first spacer 23, the second spacer 24, and the hook 25 are formed with three holes like the holes of the projecting portion 22, and bolts 29 are inserted into these holes, respectively. The second spacer 24 and the hook 25 are fastened and fixed to the lever 21.

The hook 25 is a plate-shaped member formed in an elongated shape, and the upper side thereof is fastened and fixed to the lever 21 via the first spacer 23 and the second spacer 24 as described above. The lower end of the hook 25 is located below the lower end of the lever 21. At the lower end portion of the hook 25, a boss portion 30 is formed with a thick plate and a female screw is threaded, and a stopper 31 is screwed into the female screw. The stopper 31 is formed by cutting a bolt, and has a tip end portion formed in a cylindrical shape, leaving a screw of a portion corresponding to the female screw of the boss portion 30.

Next, a method of using the rubber liner mounting jig 20 will be described. FIG. 6 is a front view of the rubber liner mounting jig 20 in use, and FIG. 7 is a side view of the rubber liner mounting jig 20 in use. First, the hook 25 of the rubber liner mounting jig 20 is fitted onto the rim portion 16 of the pulley 10 without the stopper 31 attached, and then the stopper 31 is mounted from the outside of the hook 25. As a result, the stopper 31 can be engaged with the lower surface of the rim portion 16.

Next, the rubber liner mounting jig 20 is moved to bring the roller 28 into contact with the rubber liner 18 in the uninserted portion and the stopper 31 into contact with the lower surface of the rim portion 16. When a force is applied to the lever 21 in this state to rotate the lever 21 in the direction of arrow B, the roller 28 presses the rubber liner 18 while rolling over the upper surface of the rubber liner 18, and the rubber liner 18 is mounted in the groove 17. At this time, the rollers 28 uniformly press the left and right ends of the rubber liner 18, so that the rubber liner 18 can be mounted in the groove 17 without being distorted or deformed.

The rubber liner 18 is attached to the outer periphery of the pulley 10 by sequentially performing the above operation along the outer periphery of the pulley 10. Although there are various pulleys 10 having different thicknesses of the rim portion 16, the pulleys 10 can be adapted to various pulleys 10 by changing the thickness and the number of the first spacer 23 and the second spacer 24.

10 Pulley 11 Boss 12 Bearing 13 Pulley Shaft 14 Bearing 15 Steel Plate 16 Rim 17 Groove 18 Rubber Liner 19 Rope 20 Rubber Liner Jig 21 Lever 22 Projection 23 First Spacer 24 Second Spacer 25 Hook 26 Hole 27 Pin 28 Roller 29 Bolt 30 Boss 31 Stopper B Arrow

Claims (2)

A jig for mounting a rubber liner on the rim portion of the outer periphery of a pulley, wherein the jig has a lever rotatably provided with a roller for pressing the rubber liner at an end thereof, and is fixed to both side surfaces of the lever. A rubber liner mounting jig for a pulley, comprising: a hook extending to the roller side; and a stopper that is detachably attached to a tip portion of the hook and that engages with the rim portion. The rubber liner mounting jig for a pulley according to claim 1, further comprising a spacer provided between the lever and the hook.

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