ES364073A2 - Adjustable vehicle-washing machine - Google Patents

Abstract

Vehicle washing apparatus comprises a spraying member 1 in the form of an oscillating bridge provided with counterweights 11 and pivoted at fulcrum pins 2 and 3 respectively to two carriages 4 and 5, which carriage 4 has mounted thereon a guide rail 13 within which a trolley 15 runs on rollers 14, and from the lower part of the trolley 15 depends a stirrup 16 at the lower terminal part of which a device 18 is mounted operable to drivingly connect the trolley 15 to a toothed belt 19, 191 engaging with toothed wheels 20 attached to the axles of wheels 11 on which carriage 4 is movable. The fulcrum pin 2 is extended internally in the carriage 4 to form a shaft 21 on which is mounted an elongated attachment 23 with a longitudinal channel 24 directed towards the stirrup 16 along which channel 24 are drilled holes (25, 251, 2511) intended to be selectively engaged with a pin 26 passing through a slot 17 in stirrup 16, the pin 26 being movable between holes (25, 251, 2511) but not from channel 24. Also on shaft 21 is mounted a sprocket wheel 30 engageable through a chain 31 to a motor/ reduction gear set mounted on a bracket integral with the carriage 4. The device 18 comprises a block 35 within which is mounted a piston 37 and on the upper face of the block 35 is pivoted a contact arm 41 having a toothed rack 42 intended to engage with teeth 421 on inside face of the belt 19, 191, the piston 37 being forced upwards by compressed air to bring rod 371 into contact with arm 41 and the piston 37 being forced downwards by action of a compression spring 44. In operation oscillation of spraying member 1 through the action of motor/reduction gear set 33 causes an oscillation of attachment 23 and consequently movement of trolley 15. Movement of trolley 15 when connected with belt 19, 191 through device 18 will cause a corresponding displacement of belt 19, 191 and movement of the carriage 4 in the direction opposite to that of the trolley 15.