A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ASCENDING/DESCENDING TYPE SAFETY FENCE FOR MANHOLE
To provide an ascending/descending type safety fence for a manhole capable of securing an opening portion of a manhole.SOLUTION: In an ascending/descending type safety fence for a manhole 1, movable posts 12 are attached so as to ascend/descend along two posts 11 of a ladder 10 fixed to an inner peripheral wall of a manhole, and a safety fence 20 comprising a first fence portion 21 and a second fence portion 23 is bridged between the movable posts 12. The first fence portion 21 is connected with each movable post 12 via a first hinge portion 22 so as to oscillate. The second fence portion 23 is connected so as to be bridged between the first fence portions 21 and oscillate via a second hinge portion 24. As to the second fence portion 23, two fence bodies 23a and 23b are connected with each other so as to oscillate via a third hinge portion 25. In a developed state of the safety fence 20, the second hinge portion 24 and the third hinge portion 25 are positioned above an outer peripheral portion of an opening portion of the manhole M.SELECTED DRAWING: Figure 1
【課題】マンホールの開口部を確保することができるマンホール用昇降式安全柵を提供する。【解決手段】マンホールの内周壁に固定されるはしご１０の２本の支柱１１に沿って可動支柱１２が昇降可能に取り付けられ、それぞれの可動支柱１２間に第１柵部２１および第２柵部２３からなる安全柵２０が掛け渡されているマンホール用昇降式安全柵１であり、第１柵部２１がそれぞれの可動支柱１２に第１ヒンジ部２２を介して揺動可能に連結され、それぞれの第１柵部２１の間に掛け渡すように第２柵部２３が第２ヒンジ部２４を介して揺動可能に連結され、第２柵部２４が２枚の柵体２３ａと柵体２３ｂとを相互に第３ヒンジ部２５を介して揺動可能に連結され、安全柵２０が展開状態のとき、第２ヒンジ部２４および第３ヒンジ部２５がマンホールＭの開口部の外周部分の上方に位置している。【選択図】図１
ASCENDING/DESCENDING TYPE SAFETY FENCE FOR MANHOLE
To provide an ascending/descending type safety fence for a manhole capable of securing an opening portion of a manhole.SOLUTION: In an ascending/descending type safety fence for a manhole 1, movable posts 12 are attached so as to ascend/descend along two posts 11 of a ladder 10 fixed to an inner peripheral wall of a manhole, and a safety fence 20 comprising a first fence portion 21 and a second fence portion 23 is bridged between the movable posts 12. The first fence portion 21 is connected with each movable post 12 via a first hinge portion 22 so as to oscillate. The second fence portion 23 is connected so as to be bridged between the first fence portions 21 and oscillate via a second hinge portion 24. As to the second fence portion 23, two fence bodies 23a and 23b are connected with each other so as to oscillate via a third hinge portion 25. In a developed state of the safety fence 20, the second hinge portion 24 and the third hinge portion 25 are positioned above an outer peripheral portion of an opening portion of the manhole M.SELECTED DRAWING: Figure 1
【課題】マンホールの開口部を確保することができるマンホール用昇降式安全柵を提供する。【解決手段】マンホールの内周壁に固定されるはしご１０の２本の支柱１１に沿って可動支柱１２が昇降可能に取り付けられ、それぞれの可動支柱１２間に第１柵部２１および第２柵部２３からなる安全柵２０が掛け渡されているマンホール用昇降式安全柵１であり、第１柵部２１がそれぞれの可動支柱１２に第１ヒンジ部２２を介して揺動可能に連結され、それぞれの第１柵部２１の間に掛け渡すように第２柵部２３が第２ヒンジ部２４を介して揺動可能に連結され、第２柵部２４が２枚の柵体２３ａと柵体２３ｂとを相互に第３ヒンジ部２５を介して揺動可能に連結され、安全柵２０が展開状態のとき、第２ヒンジ部２４および第３ヒンジ部２５がマンホールＭの開口部の外周部分の上方に位置している。【選択図】図１
ASCENDING/DESCENDING TYPE SAFETY FENCE FOR MANHOLE
マンホール用昇降式安全柵
KAKIKUBO NORIO (author)
2021-03-01
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
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Gründungen