| 摘要 |
This invention relates to a load hoist arrangement ( 1 ) comprising a control device ( 50 ) arranged between a traverse device and a load carrying device ( 52 ). The load carrying device ( 52 ) is manually guidable in a three-dimentional space and lateral movement of said load carrying device ( 52 ) is controlled by a driving device. The driving device is controlled by recorded and transmitted force impacts from said control device ( 50 ) to said driving device. The traverse device has support elements ( 5, 6, 7 ) for supporting a traveling bridge ( 4 ), arranged to travel along said support elements ( 5, 6, 7 ), and a carriage ( 3 ) arranged to travel back and forth on said traveling bridge ( 4 ). The driving device comprises at least one motor, provided with at least two driving wheel units ( 15, 16 ), secured to said carriage ( 3 ) and two drag elements ( 21, 21 ') secured at its end portions to opposite end portions of said support elements ( 5, 6 ) and crossing at said traveling bridge ( 4 ). The drag elements ( 21, 21 ') crossing each other at said carriage ( 3 ) arranged such that a first driving wheel unit ( 15 ) works in contact with one drag element ( 21 ) and a second driving wheel unit ( 16 ) works in contact with another drag element ( 21 '), thereby moving the carriage ( 3 ) and hence the load carrying device ( 52 ) in the lateral direction during operation.
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