To provide an opening/closing device for an opening part allowing its disassembly, transportation, and assembly to be easily carried out, and burden of operators to be reduced as well as their enough safety to be secured without requiring up/down operation at a position deviated from a center of gravity of an object to be lifted.SOLUTION: An opening/closing device 10 for an opening part is installed in a way of surrounding the opening part H by being assembled easily by being combined with a plurality of members as an up/down motion device 40 including: a pair of right/left main guide frames 11a, 11b; extension guide frames 12a, 12b; two end frames 16a, 16b placed longitudinally; a pair of handrails 20a, 20b and a depth side handrail 20c; a pair of right/left up/down motion bases 41a, 41b sliding on the guide frames; up/down motion mechanisms 43 to 53; and a handle 25 and right/left supporting columns 26 thereof. Simply pushing and pulling the handle 25 through operating the up/down motion mechanism 43 to 53 by an operator W allow the opening part H to be opened/closed through lifting and moving cover lids 31a to 31d easily and safely without their deviation from their gravity centers.SELECTED DRAWING: Figure 1
【課題】分解して容易に運搬、組み立て可能で、吊り上げ対象物の重心からずれた位置での吊り上げ作業を要することなく、作業者の負担を軽減し且つ十分な安全性を確保する開口部開閉装置を提供する。【解決手段】開口部開閉装置10を、左右一対のメインガイドフレーム11a,11bおよび延長ガイドフレーム12a,12b、前後2本のエンドフレーム16a,16b、左右および奥側の手すり20a,20b,20cと、ガイドフレーム上を滑走する左右一対の昇降ベース41a,41b、昇降機構43~53、ハンドル25およびその左右の支柱26を含む昇降移動装置40として、複数の部材を組み合わせることで容易に組み立て、開口部Hを囲むように設置する。作業者Wにより昇降機構43~53を操作してハンドル25を押したり引いたりするだけで、覆蓋31a~31dを何れもその重心からずれずに容易且つ安全に吊り上げて移動させ、開口部Hを開いたり閉じたりできる。【選択図】 図1
OPENING/CLOSING DEVICE FOR OPENING PART AND OPENING/CLOSING METHOD FOR OPENING PART
開口部開閉装置および開口部開閉方法
2022-02-25
Patent
Electronic Resource
Japanese