A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The present invention provides a ladder apparatus. In the ladder apparatus of the present invention, a link means is installed between front and rear legs constituting a step-type footrest, so that an operation that the front and rear legs are unfolded outward or folded inward can be performed. A hinge device is installed at a joint portion of each link means to be able to induce stable unfolding and folding of the front and rear legs. Of course, it is possible to maintain a stable fixed state without shaking during the unfolding operation. The ladder apparatus of the present invention comprises: a work platform (10); the front leg (20); the rear leg (30); a first connection frame (42); a second connection frame (44); a center hinge device (200); a vertical bar (46); a shaft pin (90); and the link means (40).
본 발명은 계단형 발판을 구성하는 전, 후방 다리 사이에 링크수단을 설치하여 전, 후방 다리를 외측으로 펼치거나 내측으로 접히는 동작을 수행할 수 있고, 각 링크수단의 관절부위에는 힌지장치를 설치하여 전, 후방 다리의 안정적인 펼침 및 접힘 동작을 유도할 수 있음은 물론 펼침 동작시 흔들리지 않고 안정적인 고정상태를 유지할 수 있는 사다리 장치를 제공한다.
The present invention provides a ladder apparatus. In the ladder apparatus of the present invention, a link means is installed between front and rear legs constituting a step-type footrest, so that an operation that the front and rear legs are unfolded outward or folded inward can be performed. A hinge device is installed at a joint portion of each link means to be able to induce stable unfolding and folding of the front and rear legs. Of course, it is possible to maintain a stable fixed state without shaking during the unfolding operation. The ladder apparatus of the present invention comprises: a work platform (10); the front leg (20); the rear leg (30); a first connection frame (42); a second connection frame (44); a center hinge device (200); a vertical bar (46); a shaft pin (90); and the link means (40).
본 발명은 계단형 발판을 구성하는 전, 후방 다리 사이에 링크수단을 설치하여 전, 후방 다리를 외측으로 펼치거나 내측으로 접히는 동작을 수행할 수 있고, 각 링크수단의 관절부위에는 힌지장치를 설치하여 전, 후방 다리의 안정적인 펼침 및 접힘 동작을 유도할 수 있음은 물론 펼침 동작시 흔들리지 않고 안정적인 고정상태를 유지할 수 있는 사다리 장치를 제공한다.
Ladder device
사다리 장치
AN CHUN JA (author)
2021-10-07
Patent
Electronic Resource
Korean
IPC:
E06C
LADDERS
,
Leitern