Test device for ensuring that constant expansion force of belt is changeless after of postoperation of water pump belt runs

• Main Authors: GUO ZONGWEI, ZHAO SHUFENG, ZHOU XIANGQING, LI MING, FENG ZHANGHONG, ZHAO WEIDONG, WANG RUIJIN, XING RONGXIA, ZHANG YINGJUN, YU CHUNHUA
• Format: Patent
• Language: Chinese; English
• Published: 12.05.2010
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model discloses a test device for ensuring that the expansion force of a belt is changeless after a water pump belt runs, which comprises a motor belt pulley, a water pump belt pulley, a bracket belt pulley and a transmission belt which is matched with the motor belt pulley, the water pump belt pulley and the bracket belt pulley, wherein a belt tightening device is arranged on the transmission belt. By adding the belt tightening device on the transmission belt, the utility model enables the belt to be always in a tightening state, a counterweight block continuously applies force to a displacement tightening pulley under the action of gravity by a fixed pulley, the displacement tightening pulley applies constant pressure to the belt under the action of the constant repeating force of the counterweight block, the bracket belt pulley ensures the installation wrap angle of the water pump belt pulley, and the displacement tightening pulley ensures that the expansion force keeps changeless in the runnin