A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a triangular ladder capable of being nested in multiple layers, and belongs to the technical field of technical tools. The triangular ladder capable of being nested in multiplelayers is provided, a triangular structure with multiple nested layers is adopted, the shrinkage ratio of the ladder is greatly increased, folding and unfolding are easy, the structure is more stableand firmer, the overall weight is lower, carrying is more convenient, and use is safer and more stable. According to the adopted technical scheme, the triangular ladder capable of being nested in multiple layers comprises a plurality of ladder units nested layer by layer, each ladder unit is of a triangular prism structure formed by connecting three side plates, and the three side plates of eachladder unit are each provided with a plurality of stepping holes; and when the triangular ladder is in a use state, the bottom edges of the stepping holes in the three side plates are all located on the same plane, the cross sections of the multiple ladder units are matched from outside to inside, the sizes of the cross sections are sequentially decreased, the size of the bottom section of the inner-stage ladder unit is larger than the size of the top section of the adjacent outer-stage ladder unit and smaller than the size of the middle section of the adjacent outer-stage ladder unit, and therefore the top of the adjacent outer-stage ladder unit can be firmly sleeved with the triangular ladder.
本发明可多层套叠的三角梯属于技术工具技术领域；解决的技术问题为：提供一种可多层套叠的三角梯，采用多级叠套的三角形结构，使梯子的收缩比大大增加，收放简单，结构更稳定牢固，整体重量更轻，更便于携带，使用中更安全稳定；采用的技术方案为：可多层套叠的三角梯，包括若干层层套叠的梯单元，所述梯单元为三个侧板连接构成的三棱台结构，梯单元的三个侧板上均设有多个踩孔，在处于使用状态时，三个侧板上的踩孔底边均位于同一平面上，多个梯单元从外到内的横截面匹配且尺寸依次递减，内级梯单元的底部截面尺寸大于相邻外级梯单元的顶部截面尺寸并小于相邻外级梯单元的中部截面尺寸，使其可以牢固套在相邻外级梯单元的顶部。
The invention discloses a triangular ladder capable of being nested in multiple layers, and belongs to the technical field of technical tools. The triangular ladder capable of being nested in multiplelayers is provided, a triangular structure with multiple nested layers is adopted, the shrinkage ratio of the ladder is greatly increased, folding and unfolding are easy, the structure is more stableand firmer, the overall weight is lower, carrying is more convenient, and use is safer and more stable. According to the adopted technical scheme, the triangular ladder capable of being nested in multiple layers comprises a plurality of ladder units nested layer by layer, each ladder unit is of a triangular prism structure formed by connecting three side plates, and the three side plates of eachladder unit are each provided with a plurality of stepping holes; and when the triangular ladder is in a use state, the bottom edges of the stepping holes in the three side plates are all located on the same plane, the cross sections of the multiple ladder units are matched from outside to inside, the sizes of the cross sections are sequentially decreased, the size of the bottom section of the inner-stage ladder unit is larger than the size of the top section of the adjacent outer-stage ladder unit and smaller than the size of the middle section of the adjacent outer-stage ladder unit, and therefore the top of the adjacent outer-stage ladder unit can be firmly sleeved with the triangular ladder.
本发明可多层套叠的三角梯属于技术工具技术领域；解决的技术问题为：提供一种可多层套叠的三角梯，采用多级叠套的三角形结构，使梯子的收缩比大大增加，收放简单，结构更稳定牢固，整体重量更轻，更便于携带，使用中更安全稳定；采用的技术方案为：可多层套叠的三角梯，包括若干层层套叠的梯单元，所述梯单元为三个侧板连接构成的三棱台结构，梯单元的三个侧板上均设有多个踩孔，在处于使用状态时，三个侧板上的踩孔底边均位于同一平面上，多个梯单元从外到内的横截面匹配且尺寸依次递减，内级梯单元的底部截面尺寸大于相邻外级梯单元的顶部截面尺寸并小于相邻外级梯单元的中部截面尺寸，使其可以牢固套在相邻外级梯单元的顶部。
Safety escape ladder capable of being obliquely unfolded
| European Patent Office | 2021