| 摘要 |
The structure (10) includes at least one elongate, rotatable tension rod with a head (22) and is captive relative to the structure (10). A mechanism for preventing undesirable rotation of the rod includes a locking plate (38) that is secured relative to the structure (10) and has formed therein or thereon at least one locking plate formation (39), and the or each head (22) and a said locking plate formation (39) are connected by a key member (34) that is connected non-rotatively to the head (22) and the locking plate formation (39). The key member (34) has a hexagonal formation to seat in a like recess in the rod head (22) and a circular end to receive the plate (38), the formation (39) being able to contact and deform the transition zone of the key member (34) to prevent movement. There is a circular array of tension rods coupling two concentric cylinders of the structure which is used to couple two railway vehicles, the tension rods acting to absorb impact forces during vehicle coupling. |
