The present invention relates to a crib, and discloses a rocking mechanism and a crib with a rocking mechanism, which includes a fixed seat (2) for mounting support legs (1) and a movable seat (3) for mounting a cradle, and a connection mechanism (4) is provided between the fixed seat (2) and the movable seat (3), and the connection mechanism (4) includes at least two connection rods (401) set side by side, and the movable seat (3) and the fixed seat (2) are provided with the connection holes (301) to house both ends of the connecting rod (401), and the connection holes (301) are provided with bearings (402) installed on the connecting rod (401). The invention allows a gentler way to rock multiple cribs, which lowers the risk of hurting infants, and promises simple structure, low cost and ease of use.

A joint for floor cleaning machines, comprising: a first portion, a second portion which is articulated to the first portion, a third portion which is articulated to the second portion; the joint comprises: first stable inclination element for the stable inclination of the second portion with respect to the first portion, second stable inclination element for the stable inclination of the third portion with respect to the second portion, the first stable inclination element and the second stable inclination element being connected to a single lever and being operable by the single lever.