A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A multifunctional ladder frame structure, comprising a first ladder frame (10), a second ladder frame (20), and pivoting and connecting assemblies (30). The first ladder frame (10) comprises: a top tube (11), the top tube (11) being of a "ㄇ"-shaped solid tube body; two first longitudinal tubes (12), arranged in the same direction and each having one end fixedly connected to one of the two ends of the top tube (11), and the other end of each first longitudinal tube (12) being further provided with a tube opening (121); at least one first treading component (13), spanning across and fixedly arranged between the two first longitudinal tubes (12); and two first fasteners (14), fixedly arranged on the two first longitudinal tubes (12) respectively. The second ladder frame (20) comprises: two second longitudinal tubes (21), formed by solid tube bodies and arranged corresponding to the first longitudinal tubes (12), and each second longitudinal tube (21) being provided with a tube opening; two second fasteners (22), fixedly arranged on the two second longitudinal tubes (21) respectively, and corresponding to the two first fasteners (14) respectively; and at least one treading transverse tube (23), which is a solid tube body and spans across and is fixedly arranged between the two second longitudinal tubes (21). The two pivoting and connecting assemblies (30) are fixedly arranged at joints between the top tube (11) and the first longitudinal tubes (12) respectively, and together rotatably and pivotably connect the second ladder frame (20) to the first ladder frame (10). The multifunctional ladder frame can be used as a tire ladder frame, and can also be formed as an A-shaped foldable step ladder, is convenient to store or transport, and increases the treading height of an A-shaped step ladder.
A multifunctional ladder frame structure, comprising a first ladder frame (10), a second ladder frame (20), and pivoting and connecting assemblies (30). The first ladder frame (10) comprises: a top tube (11), the top tube (11) being of a "ㄇ"-shaped solid tube body; two first longitudinal tubes (12), arranged in the same direction and each having one end fixedly connected to one of the two ends of the top tube (11), and the other end of each first longitudinal tube (12) being further provided with a tube opening (121); at least one first treading component (13), spanning across and fixedly arranged between the two first longitudinal tubes (12); and two first fasteners (14), fixedly arranged on the two first longitudinal tubes (12) respectively. The second ladder frame (20) comprises: two second longitudinal tubes (21), formed by solid tube bodies and arranged corresponding to the first longitudinal tubes (12), and each second longitudinal tube (21) being provided with a tube opening; two second fasteners (22), fixedly arranged on the two second longitudinal tubes (21) respectively, and corresponding to the two first fasteners (14) respectively; and at least one treading transverse tube (23), which is a solid tube body and spans across and is fixedly arranged between the two second longitudinal tubes (21). The two pivoting and connecting assemblies (30) are fixedly arranged at joints between the top tube (11) and the first longitudinal tubes (12) respectively, and together rotatably and pivotably connect the second ladder frame (20) to the first ladder frame (10). The multifunctional ladder frame can be used as a tire ladder frame, and can also be formed as an A-shaped foldable step ladder, is convenient to store or transport, and increases the treading height of an A-shaped step ladder.
Multifunctional ladder frame structure
YANG MINGSHUN (author)
2023-04-06
Patent
Electronic Resource
English
IPC:
E06C
LADDERS
,
Leitern