Patent ID: 8905213

Claim:
A pressure mounting slip coupling in which a first flange ( 11 ) of one side is coupled to a brake disc ( 2 ) connected to an output shaft (O) of a prime mover, and a second flange ( 12 ) of the other side is coupled to a third flange ( 3 ) connected to an input shaft (I) of a driven device, so the output shaft (O) of the prime mover and the input shaft (I) of the driven device are connected with each other, comprising: a coupling ( 1 ) which is coupled by interposing an insulated part ( 5 ) between the first flange ( 11 ) and a spacer ( 41 ) of one side by forming the first flange ( 11 ) at the spacer ( 41 ) of one end of an intermediate shaft ( 4 ); and an overload prevention part ( 6 ) disposed at a boss ( 42 ) of the other end of the intermediate shaft ( 4 ) and coupled with the third flange ( 3 ), that is connected to the input shaft (I) of the driven device, by the second flange( 12 ); wherein said over load, prevention part ( 6 ) is characterized in that an inner sleeve ( 61 ) with a first taper surface ( 61 a ) at its outer surface is coupled to an outer side of the boss ( 42 ), a second taper surface ( 62 a ) corresponding to the taper surface ( 61 a ) of the inner sleeve ( 61 ) is formed to an inner side of an outer sleeve ( 62 ), a cylinder ( 63 ) being in contact with the first taper surface ( 61 a ) of the inner sleeve ( 61 ) is connected with the second flange ( 12 ) of the input shaft (I), an outer surface of the inner sleeve ( 61 ) comes into contact with an inner side of the outer sleeve ( 62 ), an inner diameter of the outer sleeve ( 62 ), is expanded by supplying pressure oil into the interior of the outer sleeve ( 62 ), and thus) providing an engaging force to the first and second taper surfaces ( 61 a , 62 a ) of the inner sleeve ( 61 ) and the outer sleeve ( 62 ), respectively, by pushing the outer sleeve ( 62 ), when an overload exceeding an engaging force of each of the first and second taper surfaces ( 61 a , 62 a ) occurs, a slip occurs between the inner sleeve ( 61 ) and a bushing ( 43 ); wherein the cylinder ( 63 ) is characterized in that the cylinder ( 63 ) is sealed by coupling a nut cap ( 64 ) having a sealing ( 65 ) to the inner sides of the inner sleeve ( 61 ) and the outer sleeve ( 62 ), and the nut cap ( 64 ) sealing the cylinder ( 63 ) is fixed at the inner sleeve ( 61 ) to apply the pressure of the cylinder ( 63 ) to the outer sleeve ( 62 ); wherein a first insulation plate ( 51 ) is interposed between the spacer ( 41 ) and the first flange ( 11 ), a bolt ( 7 ) connecting the spacer ( 41 ) and the first flange ( 11 ) is coupled with an insulation bush ( 52 ), and a nut ( 71 ) coupled with the bolt ( 7 ) is coupled by interposing a second insulation plate ( 53 ).