| 摘要 |
The wind-powered sound-producing arrangement (1) for driving away voles and field mice involves a rod (6) inserted into the round. The arrangement has a propeller (2) and a rotatable propeller shaft (2a), with the propeller rotary movement activating sound-producing devices (3,4,5,7,9). The sound-producing devices comprise a lever arm system (4), which imparts a rocking movement with one end part (4a) to the propeller. Its other end part (4b) functions in an end position with a support (9). This support, with small sound losses, can work in conjunction with a rod (6) inserted in the ground. This rod has good sound-conducting properties. |
