| 摘要 |
An actuator arrangement 1 for moving a first component 2 relative to a second component 3, the arrangement comprising: an actuator chamber 5 for receiving a fluid under pressure, a side wall 2a of the chamber being fixed relative to the first component 2; an actuating element 7 fixed relative to the second component 3 and located inside the chamber 5 for sliding movement along the chamber 5, relative to the side-wall 2a; and a sealing element 8, 9 which provides a corresponding sliding seal between the actuating element and the sidewall 2a for maintaining an actuating fluid pressure differential to drive the actuating element 7 relative to said side-wall 2a and thereby driving said relative movement of the first and second components 2, 3; wherein the arrangement further comprises an external side-wall brace connected to the second component 2 for corresponding movement with the actuating element 7 along the outside of the sidewall 2a, the brace being slidably or rollably braced against the outside of the side-wall 2a close to the sealing element thereby to provide respective local reinforcement of the side-wall 2a at or near the sliding seal.
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