| 摘要 |
PCT No. PCT/EP93/00131 Sec. 371 Date Jul. 7, 1994 Sec. 102(e) Date Jul. 7, 1994 PCT Filed Jan. 21, 1993 PCT Pub. No. WO93/19957 PCT Pub. Date Oct. 14, 1993.A locking device is provided for a retractable support member for mobile machines and the like. The support member is movable between a retracted transport position and an operating support position. The locking device includes a locking bolt moveable between a locking position, an unlocking position, and a release position with the bolt being biased toward the locking position. An actuating member moveable between first and second end positions is provided for engaging a driving element extending from the locking member such that the locking bolt can be moved from the locking position to the unlocking position when the actuating member is moved from the first end position to the second end position. An engagement and guide member is connected to the support member and includes two locking surfaces engagable with the locking bolt for locking the support member in the transport and operating positions. The engagement and guide member also includes a cam portion between the two locking surfaces that is engagable with the locking bolt for displacing the locking bolt from the unlocking position to the release position wherein the driving element is disengaged from the actuating member and the actuating member consequently moves automatically from its second end position to its first end position. The locking device thereby assures that the, support member is automatically locked when in either the transport or operating position and that the locking device need only be actuated for unlocking the support member.
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