Air cooled gear housing
View Patent ↗A spur-gear mechanism, especially a bevel spur-gear mechanism, having one or more transmission stages is provided. The transmission stages are accommodated in a gear mechanism housing having two side surfaces and two base surfaces. Guided out of the gear mechanism housing is a drive shaft on which is fixedly secured, beyond a housing, an axial fan wheel. A spacer flange for connection to a motor spacer is formed on the gear mechanism housing. The spacer flange is provided with central openings in an extension of the base surfaces and with lateral openings in an extension of the side surfaces.
1. A spur-gear mechanism, comprising:
a drive shaft for transmitting a driving power from a motor, said drive shaft defining an axis;
a split housing surrounding transmission stages of the spur-gear mechanism and including an upper housing portion and a lower housing portion;
an axial fan wheel fixedly disposed on said drive shaft and drawing air axially from the motor to force the drawn air to flow in a direction of the axis through the split housing in substantial parallel relationship to the drive shaft;
a split spacer flange formed in one piece with the upper and lower housing portions, respectively, and including first openings extending at a slant to outwardly direct a flow of air drawn in by the axial fan from the motor to flow across inclined outer base surfaces of the housing;
first cooling ribs disposed on side surfaces of the housing in flow communication with second openings of the spacer flange and bent inwards towards the second openings;
second cooling ribs disposed on the base surfaces of the housing in flow communication with the first openings of the spacer flange and bent inwards towards the first openings; and
reinforcing ribs formed on the spacer flange between the first and second openings.
2. The spur-gear mechanism of claim 1 , wherein upper and lower ones of the base surfaces are inclined in a direction toward the first openings in the spacer flange.
3. The spur-gear mechanism of claim 1 , further comprising an air-conducting hood provided between the spacer flange and outer surfaces of the housing on a front side of the housing, said air-conducting hood having an inner diameter which is greater than radially largest dimensions of the first and second openings in the spacer flange.