| 摘要 |
A locking device for supporting members for a mobile machine, which supporting members are arranged on a chassis or load-bearing frame and can be extended, pivoted or telescoped from a retracted transport position into a deployed working position, has a locking bolt which can be displaced between a locked position and an unlocked position in a guide sleeve which is fixed to the frame and is arranged transversely with respect to the pulling-out direction of the supporting member, which locking bolt is prestressed in the direction of the locked position under the action of a spring, has an actuating member which displaces the locking bolt between the locked position and the unlocked position, and has a latching and guiding member for the locking bolt, which latching and guiding member is arranged rigidly on the supporting member, wherein the latching and guiding member has a guiding curve which pushes the locking bolt into a release slope, and wherein the locking bolt can be moved in the release slope automatically into the locked position thereof. In order for it to be possible to perform arresting of the supporting members in defined positions in the case of limited spatial conditions and only partially extended supporting members, the latching and guiding member extends between a first latching position for the locking bolt in the region of the retracted transport position of the supporting member and a second latching position for the locking bolt in the region of the completely extended, pivoted-out or telescoped working position of the supporting member, and the latching and guiding member has at least one further latching position between the first and second latching position. |
| 主权项 |
1. A machine comprising:
a chassis or load-bearing frame having a support member being able to be extended, swung out or telescoped from a retracted transport position into an extended working position, a guide bushing, a locking device having a spring, an actuating member, and a locking bolt displaceable between a blocking position and an unblocking position in the guide bushing, wherein the locking device is fixed to the chassis or frame and is arranged transversely with respect to a pull-out direction of the support member, wherein the locking bolt is biased in a direction of the blocking position by the spring, wherein the actuating member displaces the locking bolt between the blocking position and the unblocking position, and an engagement and guiding member for the locking bolt, said engagement and guiding member being arranged rigidly on the support member (10), wherein the engagement and guiding member comprises pivotable first and second latches having first and second cams, respectively, for pushing the locking bolt into a release position, and wherein, in the release position, the locking bolt is movable automatically into the blocking position, wherein the engagement and guiding member extends between a first engagement position for the locking bolt in a region of the retracted transport position of the support member and a second engagement position for the locking bolt in a region of the extended working position of the support member, wherein the engagement and guiding member comprises at least one further engagement position between the first and second engagement positions, and wherein the first and second latches are in respective regions of the first and second engagement positions, respectively, wherein each of said first and second cams respectively acts on the locking bolt in a first displacement direction of the support member and displaces said locking bolt between the unblocking position and the release position. |
