Street sweeper

A sweeper comprising a frame (10), at least three wheels (5), a propulsion motor, a cabin (1) for the driver, one or more brushes (2), each brush being able to perform a rotation relative to an armature (19) mounted at the end of a brush-holder arm (3) which extends (a) either in front of or in the periphery of the cabin, or (b) both in front of and in the periphery of the cabin, and waste suction and collection means, wherein each of the brush-holder arms (3) comprises:

• two pairs of profile members, each pair comprising a top profile member (11) and a bottom profile member (12), the top and bottom profile members being:
• respectively connected to the frame or to a structure connected to the frame, by a first pair of pivots (15, 16), allowing the pivoting of the profile members relative to the frame (10) about horizontal axes,
• respectively connected to the armature (19) of the brush (2), by a second pair of pivots (17, 18), allowing the pivoting of the profile members relative to the armature (19) about horizontal axes,
• such that the four pivots (15, 16, 17, 18) of each pair of profile members form a deformable parallelogram, the two parallelograms having essentially the same dimensions and being situated in parallel vertical planes,
• an actuator (25) mounted between the pairs of profile members, the actuator being configured to actuate the deformation of said parallelograms so as to raise or lower the brush (2) in a vertical plane,
• and wherein the actuator (25) is configured such that when the brush (2) is raised to the maximum, the actuator (25) is positioned below the top profile members (11) of said pairs of profile members,
• characterized in that:
• bottom pivots (16, 18) of each of the pairs of profile members are arranged backward in a horizontal direction relative to the top pivots (15 and 17),
• each of the top (11) and bottom (12) profile members of each pair of profile members (11, 12) is formed by two straight parts (35, 36) secured to one another, a first part (35) present on the side of the armature of the brush (2) which is essentially oriented horizontally when the brush is raised to the maximum, and a second part (36) present on the side of the frame (10) which is inclined downward when the brush (2) is raised to the maximum.