A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Extension ladder
The extension ladder comprises an extension ladder body, the front end and the rear end of a cross rod at the uppermost end of the extension ladder body penetrate through ladder pipes where the cross rod is located and are hinged to a protective cover, the protective cover is composed of three frames, and each frame comprises two side plates and a movable plate movably connected between the two side plates; corresponding positioning holes are formed in the two side plates, a fixed shaft is arranged between the two side plates, a movable plate close to the outer edges of the two side plates is arranged between the two side plates, the movable plate comprises a telescopic rod and two leaf plates, and the upper end of the upper leaf plate in the two leaf plates is rotationally connected with the fixed shaft; and the hinged end parts of the two blade plates and the lower end of the lower blade plate in the two blade plates are movably connected with one group of positioning holes in the two side plates through telescopic rods. The telescopic ladder has a protection function, is convenient to maintain and operate, and is particularly suitable for maintenance and overhaul work of optical cables in mountain forest areas.
本发明涉及一种伸缩梯，包括伸缩梯本体，伸缩梯本体最上端的横杆前后两端均贯穿所在的梯管并铰接有防护罩，所述防护罩由三个框架构成，每个所述框架均包括两个侧板和活动连接在两个侧板之间的活动板，两个侧板上设有相对应的定位孔，两个侧板之间有固定轴，两个侧板之间有靠近两个侧板外边缘的活动板，所述活动板包括伸缩杆和两个叶板，两个叶板中位于上方叶板的上端转动连接固定轴，两个叶板相铰接的端部和两个叶板中位于下方叶板的下端均经伸缩杆与两个侧板上的一组定位孔活动连接。本发明是一种具有防护功能、方便维修操作的伸缩梯，尤其适用于山林地区光缆的维修与检修工作。
Extension ladder
The extension ladder comprises an extension ladder body, the front end and the rear end of a cross rod at the uppermost end of the extension ladder body penetrate through ladder pipes where the cross rod is located and are hinged to a protective cover, the protective cover is composed of three frames, and each frame comprises two side plates and a movable plate movably connected between the two side plates; corresponding positioning holes are formed in the two side plates, a fixed shaft is arranged between the two side plates, a movable plate close to the outer edges of the two side plates is arranged between the two side plates, the movable plate comprises a telescopic rod and two leaf plates, and the upper end of the upper leaf plate in the two leaf plates is rotationally connected with the fixed shaft; and the hinged end parts of the two blade plates and the lower end of the lower blade plate in the two blade plates are movably connected with one group of positioning holes in the two side plates through telescopic rods. The telescopic ladder has a protection function, is convenient to maintain and operate, and is particularly suitable for maintenance and overhaul work of optical cables in mountain forest areas.
本发明涉及一种伸缩梯，包括伸缩梯本体，伸缩梯本体最上端的横杆前后两端均贯穿所在的梯管并铰接有防护罩，所述防护罩由三个框架构成，每个所述框架均包括两个侧板和活动连接在两个侧板之间的活动板，两个侧板上设有相对应的定位孔，两个侧板之间有固定轴，两个侧板之间有靠近两个侧板外边缘的活动板，所述活动板包括伸缩杆和两个叶板，两个叶板中位于上方叶板的上端转动连接固定轴，两个叶板相铰接的端部和两个叶板中位于下方叶板的下端均经伸缩杆与两个侧板上的一组定位孔活动连接。本发明是一种具有防护功能、方便维修操作的伸缩梯，尤其适用于山林地区光缆的维修与检修工作。
Extension ladder
一种伸缩梯
WANG KE (author) / DENG JIANJUN (author) / LIU ZILI (author) / SONG LIQIANG (author) / LI FAN (author)
2023-03-07
Patent
Electronic Resource
Chinese
IPC:
E06C
LADDERS
,
Leitern
| British Library Online Contents | 2003