To eliminate a risk in a prior art that a cover body is broken due to rubbing of an abutment portion of the cover body as a result of continuous contact of a rope with the cover body at a certain point when the rope oscillates in a width direction since a rope drawing-in/out opening part of an entanglement prevention tool for a pulley is linearly formed along a rope groove in a wheel.SOLUTION: A pulley entanglement prevention tool of the present invention includes: one body part fixed to a surface side of a support frame which rotatably supports wheels of a pulley; another body part fixed to a rear surface side of the support; and one and another cover members which are made of flexible members for covering rope grooves of the wheels, the cover members being provided on one body part and the other body part, respectively, and being arranged so as to oppose each other at their tip edges. An opening extending along the rope grooves of the wheels is formed by the tip edge of the one cover member and the tip edge of the other cover member. The opening is formed in a shape of straight lines and/or curves bending many times.SELECTED DRAWING: Figure 1
【課題】従来、滑車の巻き込み防止具のロープ引き込み、引き出し用開口部は、車輪のロープ溝に沿って直線状に形成されていたため、ロープが幅方向に揺れた時に、ロープがカバー体の1か所に当たり続けて、該カバー体の当接部分が擦れてカバー体が破損してしまうおそれがあった。【解決手段】本発明の滑車用巻き込み防止具は、滑車の車輪を回転自在に支持する支持枠の表面側に固定された一方の本体部と、上記支持体の裏面側に固定された他方の本体部と、上記一方の本体部と、他方の本体部とにそれぞれ設けられた、上記車輪のロープ溝を覆う、先端縁が互いに対向するように設けられた、可撓性部材よりなる一方及び他方のカバー体とよりなり、上記一方のカバー体の先端縁と、上記他方のカバー体の先端縁とにより、上記車輪のロープ溝に沿って伸びる開口部が形成され、該開口部は、直線、又は/及び、曲線が何度も折れ曲がった形状に形成されることを特徴とする。【選択図】 図1
PULLEY ENTANGLEMENT PREVENTION TOOL
滑車用巻き込み防止具
2024-12-06
Patent
Electronic Resource
Japanese