Assembly combining a system (4; 54; 104) for cleaning a surface and a surface to be cleaned (10; 60; 102), the assembly comprising: - the surface to be cleaned (10; 60; 102), extending in axial and transverse directions that are perpendicular to each other; - a scraping net (12; 62; 110) guided with respect to the surface to be cleaned and comprising: • first filamentary elements (20; 70; 120) extending in a first direction collinear with the axial direction in a cleaning configuration of the surface (10; 60; 102) and which are spaced apart from one another in a second direction that is different from the first direction, • second filamentary elements (22; 72; 122) extending in the second direction and spaced apart from one another in the first direction, said second filamentary elements being fixed to the first filamentary elements so as to form a mesh, the second direction being preferably collinear with the transverse direction of the surface to be cleaned in a cleaning configuration of the surface (10; 60; 102); - a moving device (14; 64; 114) including a control module (34; 88; 132) and configured to move the scraping net in a reciprocating movement along the axial direction and with an amplitude of movement at least equal to the average distance between the second filamentary elements, the moving device comprising actuating means (30; 32; 76; 134) provided to set the scraping net (12; 62; 110) in motion according to the reciprocating movement in response to a control signal of the control module. - the surface to be cleaned (10; 60; 102), extending in axial and transverse directions that are perpendicular to each other; - a scraping net (12; 62; 110) guided with respect to the surface to be cleaned and comprising: • first filamentary elements (20; 70; 120) extending in a first direction collinear with the axial direction in a cleaning configuration of the surface (10; 60; 102) and which are spaced apart from one another in a second direction that is different from the first direction, • second filamentary elements (22; 72; 122) extending in the second direction and spaced apart from one another in the first direction, said second filamentary elements being fixed to the first filamentary elements so as to form a mesh, the second direction being preferably collinear with the transverse direction of the surface to be cleaned in a cleaning configuration of the surface (10; 60; 102); • first filamentary elements (20; 70; 120) extending in a first direction collinear with the axial direction in a cleaning configuration of the surface (10; 60; 102) and which are spaced apart from one another in a second direction that is different from the first direction, • second filamentary elements (22; 72; 122) extending in the second direction and spaced apart from one another in the first direction, said second filamentary elements being fixed to the first filamentary elements so as to form a mesh, the second direction being preferably collinear with the transverse direction of the surface to be cleaned in a cleaning configuration of the surface (10; 60; 102); - a moving device (14; 64; 114) including a control module (34; 88; 132) and configured to move the scraping net in a reciprocating movement along the axial direction and with an amplitude of movement at least equal to the average distance between the second filamentary elements, the moving device comprising actuating means (30; 32; 76; 134) provided to set the scraping net (12; 62; 110) in motion according to the reciprocating movement in response to a control signal of the control module.