A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
LADDER OVERTURNING PREVENTION DEVICE
PROBLEM TO BE SOLVED: To provide a ladder overturning prevention device that reduces overturning of a ladder and facilitates opening/closing operations of an upper clamp and a lower clamp.SOLUTION: A ladder overturning prevention device 1 is fitted on a ladder L, and includes an upper clamp 2 and a lower clamp 3 sandwiching an eaves E of a building B from top and bottom, an opening/closing operation rope 4 having an end 4a fixed on the lower clamp 3 and the other end 4b used for opening/closing the lower clamp 3 from a ground surface G, and a pulley 5 for guiding the opening/closing operation rope 4. The pulley 5 includes a fixed pulley 51 fixed on a side of a second step bar L22, and a drive pulley 52 fixed at a central part of the lower clamp 3. The opening/closing operation rope 4 has the end 4a fixed near a central part of the second step bar L22, and the other end 4b guided through the drive pulley 52 and the fixed pulley 51 in this order and then extending downward toward the ground surface G.SELECTED DRAWING: Figure 1
【課題】梯子の転倒を低減させるとともに、上クランプ及び下クランプの開閉操作を容易に行うことができる梯子転倒防止装置を提供する。【解決手段】梯子転倒防止装置１は、梯子Ｌに取り付けられ、建物Ｂの軒先Ｅを上下から挟持する上クランプ２及び下クランプ３と、一端部４ａが下クランプ３に固定され、他端部４ｂを用いて下クランプ３を地上Ｇから開閉操作する開閉操作ロープ４と、開閉操作ロープ４が案内される滑車５と、を備える。滑車５は、第２踏桟Ｌ２２の側部に固定される定滑車５１と、下クランプ３の中央部に固定される動滑車５２と、を有し、開閉操作ロープ４は、第２踏桟Ｌ２２の中央部の近接部に一端部４ａが固定され、他端部４ｂが動滑車５２及び定滑車５１の順に案内されて地上Ｇに向けて下方向に延出される。【選択図】図１
LADDER OVERTURNING PREVENTION DEVICE
PROBLEM TO BE SOLVED: To provide a ladder overturning prevention device that reduces overturning of a ladder and facilitates opening/closing operations of an upper clamp and a lower clamp.SOLUTION: A ladder overturning prevention device 1 is fitted on a ladder L, and includes an upper clamp 2 and a lower clamp 3 sandwiching an eaves E of a building B from top and bottom, an opening/closing operation rope 4 having an end 4a fixed on the lower clamp 3 and the other end 4b used for opening/closing the lower clamp 3 from a ground surface G, and a pulley 5 for guiding the opening/closing operation rope 4. The pulley 5 includes a fixed pulley 51 fixed on a side of a second step bar L22, and a drive pulley 52 fixed at a central part of the lower clamp 3. The opening/closing operation rope 4 has the end 4a fixed near a central part of the second step bar L22, and the other end 4b guided through the drive pulley 52 and the fixed pulley 51 in this order and then extending downward toward the ground surface G.SELECTED DRAWING: Figure 1
【課題】梯子の転倒を低減させるとともに、上クランプ及び下クランプの開閉操作を容易に行うことができる梯子転倒防止装置を提供する。【解決手段】梯子転倒防止装置１は、梯子Ｌに取り付けられ、建物Ｂの軒先Ｅを上下から挟持する上クランプ２及び下クランプ３と、一端部４ａが下クランプ３に固定され、他端部４ｂを用いて下クランプ３を地上Ｇから開閉操作する開閉操作ロープ４と、開閉操作ロープ４が案内される滑車５と、を備える。滑車５は、第２踏桟Ｌ２２の側部に固定される定滑車５１と、下クランプ３の中央部に固定される動滑車５２と、を有し、開閉操作ロープ４は、第２踏桟Ｌ２２の中央部の近接部に一端部４ａが固定され、他端部４ｂが動滑車５２及び定滑車５１の順に案内されて地上Ｇに向けて下方向に延出される。【選択図】図１
LADDER OVERTURNING PREVENTION DEVICE
梯子転倒防止装置
AYABE SHUHEI (author) / TAKEI YOSHIHITO (author) / TSUCHIYA AKIKO (author)
2017-10-12
Patent
Electronic Resource
Japanese
IPC:
E06C
LADDERS
,
Leitern
Track maintenance ladder car with anti-overturning devices
| European Patent Office | 2021