US 12,448,744 B2
Self-propelled sweeping machine
Claus Zumkeller, St. Blasien (DE); and Martin Ebner, Goerwihl (DE)
Assigned to Aebi Schmidt Deutschland GmbH, St. Blasien (DE)
Filed by Aebi Schmidt Deutschland GmbH, St. Blasien (DE)
Filed on Dec. 16, 2022, as Appl. No. 18/082,899.
Application 18/082,899 is a continuation of application No. PCT/EP2021/064795, filed on Jun. 2, 2021.
Claims priority of application No. 102020116166.2 (DE), filed on Jun. 18, 2020.
Prior Publication US 2023/0124476 A1, Apr. 20, 2023
Int. Cl. E01H 1/04 (2006.01)
CPC E01H 1/047 (2013.01) 8 Claims
OG exemplary drawing
 
1. A self-propelled sweeping machine (1) for intake of debris (K) from a traffic surface (V), especially a street-sweeping machine (1′), comprising a debris-intake device (4) and a debris-collecting hopper (5) having a wall (12) and a filled-level sensor (16) wherein the debris-intake device (4) comprises an intake head (8) and a conveyor section (9) attached thereto with an ejection and distribution device (11) opening into an inner space (7) of the debris-collecting hopper (5), by means of which the debris (K) taken in by the debris-intake device (4) from the traffic surface (V) can be distributed in the inner space (7) of the debris-collecting hopper (5) with formation of a debris surface (KO), characterized by the design of the filled-level sensor (16) as a radar sensor (16′) scanning the inner space (7) of the debris-collecting hopper (5) in the region of a scan cone (17) as well as by an evaluation unit (22) cooperating with the radar sensor (16′), wherein, via a distance between the filled-level sensor (16) and the debris surface (KO) in the scan cone (17), measured contactlessly by the filled-level sensor (16), the degree of filling of the debris-collecting hopper (5) with debris (K) can be determined in the evaluation unit (22) and output by it to a display and/or signaling unit (23), wherein further the debris-collecting hopper (5) has a leaf screen (13) that is impassable for coarse debris (K) and that subdivides the inner space (7) of the debris-collecting hopper (5) into a debris region (7a) and an exhaust-air region (7b), wherein the filled-level sensor (16) is provided in the exhaust-air region (7b) and the debris region (7a) of the inner space (7) of the debris-collecting hopper (5) is scanned in the region of the scan cone (17) through the leaf screen (13).