Stepless adjustment insert plate type windscreen

• Main Authors: ZHOU XIZHU, ZHAO JUN, SONG CHANGHAI, WANG HAITANG, WANG ZIBANG
• Format: Patent
• Language: Chinese; English
• Published: 08.06.2011
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MINING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS

The invention discloses a stepless adjustment insert plate type windscreen which comprises a framework (2) and a shield (8), wherein a chute (9) is arranged at the inner edge of the framework (2), insert plates (3) are arranged in the chute (9), sprockets (1), chains (4), cranks (5), guide wheels (6) and a worm gear reducer (7) are arranged in the shield (8), two sides of the insert plate (3) at the top end are respectively connected with the two chains (4), the upper parts of the chains (4) are connected with the sprockets (1), the middle parts of the chains (4) are connected with the cranks(5), the guide wheels (6) are arranged at the middle and lower parts of the chains (4), the lower parts of the chains (4) are connected with a rigid shaft, and the rigid shaft is connected with the worm gear reducer (7) through an output shaft of the worm gear reducer. The adjustment of the size of a window adopts a manual special tool for shaking the handles, thereby driving a plurality of insert plates for moving up and