| 摘要 |
The device has a connection arm (2) connected to a support leg (10) between a lower end of the support leg and an upper abutment part (100). The connection arm comprises a lower abutment part formed by hooks (22, 23). The abutment parts delimit in a housing for reception of a post (7) of a ladder. The hooks are opened in a direction of the support leg to surround the post and to rest on a bar of the ladder. The upper abutment part is applied relative to the post. |
