A floor surfacing machine with different drive motors

Abstract

The present disclosure relates to a floor surfacing machine (100) comprising drive wheels (171, 172) and a planetary head (140) with one or more satellite grinding heads (120), A first drive motor (110) is arranged to drive the planetary head (140) and a second drive motor (130, 430) is arranged to drive the one or more satellite grinding heads (120). The first drive motor (110) is arranged to be directly powered only by means of a re-chargeable internal electrical power source (310) comprised in the floor surfacing machine (100).

1 . A floor surfacing machine comprising drive wheels and a planetary head with one or more satellite grinding heads, wherein a first drive motor is arranged to drive the planetary head and wherein a second drive motor is arranged to drive the one or more satellite grinding heads, wherein the first drive motor is arranged to be powered by means of a re-chargeable onboard electrical power source comprised in the floor surfacing machine, wherein the second drive motors is arranged to be powered by an electrical mains connections. 
     
     
         2 . The floor surfacing machine according to  claim 1 , wherein the onboard electrical power source is adapted to be charged by a battery charger that in turn is adapted to be powered by an external electrical power source. 
     
     
         3 . The floor surfacing machine according to  claim 1 , wherein the floor surfacing machine comprises an onboard battery charger that is adapted to charge the onboard electrical power source. 
     
     
         4 . The floor surfacing machine according to  claim 1 , wherein the floor surfacing machine comprises a drive arrangement configured to propel the wheels, wherein the drive arrangement comprises at least one electric motor that is adapted to be powered by means of a re-chargeable onboard electrical power source. 
     
     
         5 . The floor surfacing machine according to  claim 4 , wherein the same onboard electrical power source is adapted to power the first drive motor and the drive arrangement. 
     
     
         6 . (canceled) 
     
     
         7 . The floor surfacing machine according to  claim 4 , wherein the drive arrangement comprises a sensing arrangement that is adapted to switch between having the drive arrangement powered by the onboard electrical power source or by the electrical mains dependent on the power presently available from the onboard electrical power source and the electrical mains. 
     
     
         8 . The floor surfacing machine according to  claim 1 , wherein the onboard electrical power source is positioned above the wheels such that a weight of the onboard electrical power source provides a pressure of the wheels towards a floor, wherein said pressure is adapted to increase traction of the floor surfacing machine. 
     
     
         9 . The floor surfacing machine according to  claim 8 , wherein the onboard electrical power source is positioned such that, during operation of the floor surfacing machine, an extension along a closest distance between a mass center of the onboard electrical power source nd the floor passes between the wheels. 
     
     
         10 . (canceled) 
     
     
         11 . The floor surfacing machine according to  claim 1 , wherein the internal onboard power source is adapted to be charged by a battery charger that in turn is adapted to be powered by an external electrical power source that is constituted by a 12 VDC or 24 VDC supply. 
     
     
         12 . A floor surfacing machine comprising drive wheels and a planetary head with one or more satellite grinding heads, wherein a first drive motor is arranged to drive the planetary head and wherein a second drive motor is arranged to drive the one or more satellite grinding heads, wherein the first drive motor is arranged to be powered by means of a re-chargeable onboard electrical power source comprised in the floor surfacing machine, wherein the second drive motor is an internal combustion engine. 
     
     
         13 . The floor surfacing machine according to  claim 12 , wherein the internal combustion engine is fueled by propane or butane. 
     
     
         14 . The floor surfacing machine according to  claim 12 , wherein the onboard electrical power source is adapted to be charged by a battery charger that in turn is adapted to be powered by an external electrical power source. 
     
     
         15 . The floor surfacing machine according to  claim 12 , wherein the floor surfacing machine comprises an onboard battery charger that is adapted to charge the onboard electrical power source. 
     
     
         16 . The floor surfacing machine according to  claim 12 , wherein the second drive motor comprises an electrical generator that is adapted to power a battery charger that is adapted to charge the onboard electrical power source. 
     
     
         17 . The floor surfacing machine according to  claim 16 , wherein the floor surfacing machine comprises an internally arranged battery charger that is adapted to charge the onboard electrical power source and is connected to the electrical generator. 
     
     
         18 . The floor surfacing machine according to  claim 12 , wherein the floor surfacing machine comprises a drive arrangement configured to propel the wheels, wherein the drive arrangement comprises at least one electric motor that is adapted to be powered by means of a re-chargeable onboard electrical power source. 
     
     
         19 . The floor surfacing machine according to  claim 18 , wherein the same onboard electrical power source is adapted to power the first drive motor and the drive arrangement. 
     
     
         20 . (canceled) 
     
     
         21 . The floor surfacing machine according to  claim 12 , wherein the onboard electrical power source is positioned above the wheels such that the weight of the onboard electrical power source provides a pressure of the wheels towards a floor, wherein said pressure is adapted to increase traction of the floor surfacing machine. 
     
     
         22 . The floor surfacing machine according to  claim 21 , wherein the onboard electrical power source is positioned such that, during operation of the floor surfacing machine, an extension along a closest distance between a mass center of the onboard electrical power source and the floor passes between the wheels, 
     
     
         23 . (canceled) 
     
     
         24 . The floor surfacing machine according to  claim 12 , wherein the internal onboard power source is adapted to be charged by a battery charger that in turn is adapted to be powered by an external electrical power sourced that is constituted by a 12 VDC or 24 VDC supply.