公开(公告)号：US4955484A

公开(公告)日：1990-09-11

申请号：US314541

申请日：1989-02-23

申请人： Kari Rintala ,  Jyrki Paarma ,  Mikko Sissala

发明人： Kari Rintala ,  Jyrki Paarma ,  Mikko Sissala

IPC分类号： B07C5/14 ,  B07C5/34

CPC分类号： B07C5/34

摘要： A device is disclosed for separating hard objects, such as stones, from a stream of wood in an apparatus for conveying or manipulating logs or blocks of wood including a conveyor section. The device includes a transducer disposed in a location suited for the detection of vibration. The transducer registers acoustic vibrations and is connected to a control unit by means of which hard objects conveyed along with the wood stream can be detected on the basis of the vibration signals they generate. The control unit is also used to control an exit gear incorporated in the conveyor section, so that hard objects which are detected will fall down from the stream of wood passing through the apparatus. The invention eliminates the need to build water-operated stone catchers as conventionally used for the removal of stones.

摘要翻译： 公开了一种用于在用于输送或操纵原木或木材块（包括输送机部分）的设备中从木材流中分离硬物体（例如石头）的装置。 该装置包括设置在适于检测振动的位置的换能器。 传感器记录声振动，并连接到控制单元，通过该控制单元可以根据其产生的振动信号检测与木材流一起输送的硬物体。 控制单元还用于控制结合在输送机部分中的出口齿轮，使得被检测的硬物质将从通过设备的木材流中落下。 本发明消除了如以往用于去除石头的水操石材捕集器的需要。

公开(公告)号：US5082118A

公开(公告)日：1992-01-21

申请号：US580280

申请日：1990-09-10

申请人： Kari Rintala ,  Jyrki Paarma ,  Mikko Sissala ,  Ilkka Valkonen ,  Pekka Kokko

发明人： Kari Rintala ,  Jyrki Paarma ,  Mikko Sissala ,  Ilkka Valkonen ,  Pekka Kokko

IPC分类号： B07C5/14 ,  B07C5/34

CPC分类号： B07C5/34

摘要： A device is disclosed for separating hard objects, such as stones, from a stream of wood in an apparatus for conveying or manipulating logs or blocks of wood including a conveyor section. The device includes a transducer disposed in a location suited for the detection of vibration. The transducer registers acoustic vibrations and is connected to a control unit by means of which hard objects conveyed along with the wood stream can be detected on the basis of the vibration signals they generate. The control unit is also used to control an exit gear incorporated in the conveyor section, so that hard objects which are detected will fall down from the stream of wood passing through the apparatus. The invention eliminates the need to build water-operated stone catchers as conventionally used for the removal of stones.