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实用新型
CN202731972U 一种弹簧式风门闭锁装置 失效 - 权利终止

一种弹簧式风门闭锁装置
摘要：
本实用新型公开了一种弹簧式风门闭锁装置，其特征是设置两端设有堵头（2）的钢管（3），所述钢管（3）内设有一根贯穿的钢丝绳（1），所述钢丝绳（1）包括两端直线段（11）和中间弯曲段（12），所述弯曲段（12）并联有一弹簧（4），所述钢丝绳（1）两端穿过封堵头的穿孔（21）分别与两道风门的门带连接。本实用新型结构简单，安装便捷，可以保证两道风门间的开关闭锁，确保了矿井安全生产。
摘要（英）：

The utility model discloses a spring type air door locking device. The spring type air door locking device is characterized in that a steel pipe (3) provided with plugs (2) at the two ends is adopted, the steel pipe (3) is internally provided with a through steel wire rope (1), the steel wire rope (1) comprises two straight-line sections at two ends and a middle bending section (12), the bending section (12) is connected with one spring (4) in parallel, and the two ends of the steel wire rope (1) penetrate through perforations of the plugs (2) to be respectively connected with door belts of two air doors. The spring type air door locking device disclosed by the utility model is simple in structure and convenient to mount and can ensure shutting of a switch between two air doors, and mine safety production is guaranteed.

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