A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Adjustable soft ladder for power transmission line
The invention relates to a soft ladder connection piece used for aloft working of a power transmission line, in particular to an adjustable soft ladder for the power transmission line. The adjustable soft ladder is structurally characterized by comprising two adjustable ladder columns and pulley devices, each adjustable ladder column comprises a fixed ladder column body and a movable ladder column body, the upper side portion of each fixed ladder column is hollow, a plurality of transversely-penetrating through holes are distributed in the upper side portion of each fixed ladder column body in the axial direction, each movable ladder column body is located in a hollow inner cavity of the corresponding fixed ladder column body and can move up and down relative to the corresponding ladder column body so that the length of the end of the corresponding adjustable ladder column can be adjusted, and finally fixation is conducted through insertion pins. The adjustable soft ladder is characterized in that the height adjustment can be conducted at the upper ends of the ladder columns of the soft ladder heads. The ladder is hung on an overhead line of the power transmission line span of the large height difference, the parts, at the high positions, of the soft ladder columns can be descended, and two pulleys at the soft ladder can be hung into the overhead line and can not fall. The height of the soft ladder heads can be freely adjusted according to the height difference of the overhead line span, and therefore the adjustable soft ladder is convenient to operate and high in safety and reliability.
Adjustable soft ladder for power transmission line
The invention relates to a soft ladder connection piece used for aloft working of a power transmission line, in particular to an adjustable soft ladder for the power transmission line. The adjustable soft ladder is structurally characterized by comprising two adjustable ladder columns and pulley devices, each adjustable ladder column comprises a fixed ladder column body and a movable ladder column body, the upper side portion of each fixed ladder column is hollow, a plurality of transversely-penetrating through holes are distributed in the upper side portion of each fixed ladder column body in the axial direction, each movable ladder column body is located in a hollow inner cavity of the corresponding fixed ladder column body and can move up and down relative to the corresponding ladder column body so that the length of the end of the corresponding adjustable ladder column can be adjusted, and finally fixation is conducted through insertion pins. The adjustable soft ladder is characterized in that the height adjustment can be conducted at the upper ends of the ladder columns of the soft ladder heads. The ladder is hung on an overhead line of the power transmission line span of the large height difference, the parts, at the high positions, of the soft ladder columns can be descended, and two pulleys at the soft ladder can be hung into the overhead line and can not fall. The height of the soft ladder heads can be freely adjusted according to the height difference of the overhead line span, and therefore the adjustable soft ladder is convenient to operate and high in safety and reliability.
Adjustable soft ladder for power transmission line
CHEN GUOXIN (author) / ZHONG GUANGWU (author) / WU LIHUAN (author) / ZHOU JIANGWU (author) / GUO DONGSHI (author) / CAI CHANGMING (author) / LU YI (author)
2015-04-22
Patent
Electronic Resource
English
IPC:
E06C
LADDERS
,
Leitern
Power transmission line tower operation horizontal ladder
| European Patent Office | 2020