Double-track upward pushing type case safety door

• Main Authors: ZHU ZHIHUA, LIAO SHUTIAN, LIU ZHIBIN, YAN YONGCHANG, AN GUANFENG
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2018
• Subjects: ELEVATORS; ESCALATORS OR MOVING WALKWAYS; HAULING; HOISTING; LIFTING; PERFORMING OPERATIONS; TRANSPORTING

The invention discloses a double-track upward pushing type case safety door. The double-track upward pushing type case safety door comprises a cage, a safety door, pulleys, connecting ropes, guide rails and balance weights; the pulleys are installed at the top end of the cage, the safety door is connected with the balance weights through the connecting ropes winding around the pulleys, and the twosides of the safety door are fixed to the guide rails on the two sides of the cage and can vertically move along the guide rails; and the guide rails comprise vertical guide rails and curved guide rails, the vertical guide rails are installed on the two sides of the cage, the linear portions of the curved guide rails and the vertical guide rails are installed in parallel in a staggered mode, andthe curved guide rails are each shaped like a Chinese character 'chang'. According to the double-track upward pushing type case safety door, smooth application of the safety door is achieved on the condition that the height is