Construction machine having a sand shield

Abstract

The present disclosure presents an construction machine having a sand shield comprising: at least one drum mounted to a frame at a side thereof; a drum drive motor mounted to the frame and configured to transmit a driving force to rotate the drum; a stationary shield fixed to surround the outer surface of the drum drive motor; and a rotary shield configured to surround one side of the drum drive plate mounted on the side of the drum and cover a part of the stationary shield so as to receive the driving force from the drum drive motor to rotate the drum, whereby the rotary shield is rotated together with the drum drive plate when the drum drive plate is rotated.

1 . A construction machine having a sand shield comprising:
 at least one drum mounted to a frame at a side thereof;   a drum drive motor mounted to the frame and configured to transmit a driving force to rotate said drum;   a stationary shield fixed to surround the outer surface of said drum drive motor; and   a rotary shield configured to surround one side of a drum drive plate mounted on a side of said drum and cover a part of said stationary shield so as to receive the driving force from said drum drive motor to rotate said drum, whereby said rotary shield is rotated together with said drum drive plate when said drum drive plate is rotated.   
     
     
         2 . A construction machine having a sand shield according to  claim 1 ,
 wherein said stationary shield comprises a first ring member having a predetermined width, and a first flange provided at the outer circumferential end of said first ring member in proximity to said drum drive plate in such a manner as to extend outwardly and inwardly from the outer circumferential end of said first ring member by a predetermined length in radial and central directions of said first ring member, respectively, and   said rotary shield comprises a second ring member having a predetermined width, and a second flange provided at the outer circumferential end of said second ring member in proximity to said drum drive motor in such a manner as to extend outwardly and inwardly from the outer circumferential end of said second ring member by a predetermined length in radial and central directions of said second ring member, respectively   
     
     
         3 . A construction machine having a sand shield according to  claim 1 ,
 wherein said rotary shield and/or said stationary shield is formed so as to be divided into two semi-circular segments relative to the axial direction of the motor, and the two semi-circular segments are coupled to each other by means of a fastening member.   
     
     
         4 . A construction machine having a sand shield according to  claim 2 ,
 wherein the inner diameter of said second flange of said rotary shield is smaller than the outer diameter of said first flange of said stationary shield, and is larger than the outer diameter of said first ring member of said stationary shield.   
     
     
         5 . A construction machine having a sand shield according to  claim 2 ,
 wherein the outer diameter of said first flange of said stationary shield is larger than the inner diameter of said second flange of said rotary shield, and is smaller than the inner diameter of said second ring member of said rotary shield.   
     
     
         6 . A construction machine having a sand shield according to  claim 2 ,
 wherein a gap defined between said second flange of said rotary shield and said first flange of said stationary shield has a width of approximately 5 mm in the axial direction.   
     
     
         7 . A construction machine having a sand shield according to  claim 2 , wherein a gap defined between one end of said drum drive plate and said first flange of said stationary shield has a width of approximately 5 mm. 
     
     
         8 . A construction machine having a sand shield according to  claim 2 ,
 further comprising a pad provided on an inner surface of said first ring member of said stationary shield and/or an inner surface of said second ring member of said rotary shield.