0.75 tons of aluminum alloy tension tightening device and also make gourds, mainly used for a tool during power maintenance. It is necessary to comply with the rules and regulations of the use instructions and operations, so that the aluminum alloy hand -to -hand gourd can maintain a better working state, so as to improve the efficiency. The later maintenance of aluminum alloy hand -to -hand gourds can not only eliminate the safety hazards of the equipment in time and reduce the probability of failure in the operation, which can also improve the efficiency of the entire construction operation. Therefore, the tightener must be maintained regularly.