| 摘要 |
FIELD: advertising. ^ SUBSTANCE: invention relates to field of advertising and can be used in large-format advertisement constructions providing protection against wind load. Construction includes stationary framework, movable frame with information element and mechanism for returning movable frame into initial position. Stationary framework consists of vertical poles rigidly fixed with horizontal crossbar. Between poles additional uprights are placed. Movable frame contains vertical poles rigidly fixed with horizontal poles. Device for returning movable frame into initial position contains horizontal shaft with drums, which connects uprights, upper and lower devices. Upper devices contain block-rollers, drum and rope. Block-rollers are installed on horizontal poles of movable frame. Lower devices contain drum, load located in support, and rope. Devices in mechanism are kinematically connected to each other and provide connection of stationary framework, movable frame and construction supports to each other. ^ EFFECT: invention allows to reduce wind load on construction and ensures convenience of service during information element replacement. ^ 8 cl, 4 dwg |
