The utility model discloses an output shaft arrangement form applied to a speed change clutch of an SHRT unit, and relates to arrangement of output shafts. Arrangement of an output shaft of a variable-speed clutch in an original BPRT unit easily causes vibration of the variable-speed clutch due to external disturbance force or affects the service life of the variable-speed clutch. One end of the gear shaft is rigidly connected with the input end of the synchronous automatic clutch; the output end of the synchronous automatic clutch is rigidly connected with one end of the output shaft; the other end of the output shaft is fixedly connected with one end of a coupler; the two ends of the gear shaft are each sleeved with a gear shaft sliding bearing and installed in shaft necks of the gear shaft sliding bearings. The connecting end of the output shaft and the synchronous automatic clutch is sleeved with a supporting sliding bearing and installed in a shaft neck of the supporting sliding bearing, the connecting end of the output shaft and the coupler is sleeved with a supporting and pushing bearing, and the two gear shaft sliding bearings, the supporting sliding bearing and the supporting and pushing bearing are all fixedly installed on a box body of the variable-speed clutch. The utility model is used for the variable-speed clutch.