Processing machine for concrete surface and method of processing concrete surface

Abstract

A processing apparatus is used for surface treatment of undried concrete. The processing apparatus comprises a main body portion placed on the undried concrete; a first roller provided on a bottom portion of the main body portion; a second roller provided on a back side of the first roller on the bottom portion and arranged in parallel to the first roller; a driving portion mounted on the main body portion and configured to give a rotational driving force to the first roller and the second roller; and a handle portion protruded forward from the main body portion to be held by an operator who stands in front of the main body portion. The first roller and the second roller are configured to idle in such a state that the first roller and the second roller come into contact with a surface of the undried concrete by the rotational driving force of the driving portion, when the operator holds the handle portion to move the main body portion forward.

1 . A processing apparatus used for surface treatment of undried concrete, the processing apparatus comprising:
 a main body portion placed on the undried concrete;   a first roller provided on a bottom portion of the main body portion;   a second roller provided on a back side of the first roller on the bottom portion and arranged in parallel to the first roller;   a driving portion mounted on the main body portion and configured to give a rotational driving force to the first roller and the second roller; and   a handle portion protruded forward from the main body portion to be held by an operator who stands in front of the main body portion, wherein   the driving portion is configured to control rotations of the first roller and the second roller in rotating directions opposite to each other, such that at least one of the first roller and the second roller idle on the surface of the undried concrete.   
     
     
         2 . The processing apparatus according to  claim 1 ,
 wherein the driving portion comprises a first driving system configured to give the rotational driving force to the first roller and a second driving system configured to give the rotational driving force to the second roller, and is configured to individually control rotational drive of the first roller and rotational drive of the second roller.   
     
     
         3 . The processing apparatus according to  claim 2 ,
 wherein the handle portion is provided with an operating portion configured to accept an operation of individually controlling the rotational drive of the first roller by the first driving system and the rotational drive of the second roller by the second driving system.   
     
     
         4 . The processing apparatus according to  claim 1   wherein the main body portion comprises at least one of a wiper configured to wipe a side face of the first roller and a wiper configured to wipe a side face of the second roller.   
     
     
         5 . (canceled) 
     
     
         6 . A method of surface treatment of undried concrete, the method comprising:
 a placing a first roller and a second roller, which are arranged in parallel to each other on a front side and on a back side and are configured to be rotated by a rotational driving force given by a driving portion, on the undried concrete; and   a moving the first roller and the second roller, which are rotated by the rotational driving force in rotating directions opposite to each other, in the front-back direction in the state that at least one of the first roller and the second roller come into contact with the surface of the undried concrete.   
     
     
         7 . (canceled) 
     
     
         8 . The processing apparatus according to  claim 2 ,
 wherein the main body portion comprises at least one of a wiper configured to wipe a side face of the first roller and a wiper configured to wipe a side face of the second roller.   
     
     
         9 . The processing apparatus according to  claim 3 ,
 wherein the main body portion comprises at least one of a wiper configured to wipe a side face of the first roller and a wiper configured to wipe a side face of the second roller.