2results about How to "Simplified weight" patented technology

The utility model relates to the field of inspection robot power supply, concretely relates to a kind of intrinsic safety type inspection robot lithium battery multipath parallel driving walking structure, including four brushless motors connected with four wheels respectively, the brushless motor all adopt intrinsic safety type, battery pack for its separate power supply is equipped on each brushless motor, the intrinsic safety type inspection robot lithium battery multipath parallel driving walking structure, by the parallel power supply mode of intrinsic safety type lithium battery, 4 intrinsic safety type brushless motor driving of intrinsic safety type inspection robot is driven, realize the intrinsic safety driving design of inspection robot, lighten the robot load weight, improve the cruising ability. Parallel driving walking control structure is powered by 5-way intrinsic safety lithium battery, lithium battery is designed as Ex ib I Mb explosion-proof grade, wherein 4-way is respectively powered to four driving wheels, 1-way is powered to control host computer. After parallel connection of each lithium battery, double overcurrent overvoltage charge-discharge protection of ib grade is realized after battery protection circuit.

The utility model discloses a composite structure cable blowout preventer which comprises a shell, the shell is of a hollow structure, flashboard assemblies are symmetrically installed on the side faces of the shell, a front sealing structure is installed at the front end of each flashboard assembly, a hydraulic cylinder is installed at the rear end of each flashboard assembly, and the hydraulic cylinder is connected with the shell. A hollow structure is arranged at the front end of the flashboard assembly, a grease injection channel communicated with the hollow structure is arranged in the flashboard assembly, and after the flashboard assembly is closed, an armored cable is tightened and used for sealing a wellhead through the cable when cable accidents such as cable clamping and wire jumping happen to the cable. Grease injection sealing can be achieved in a pair of flashboards, and the size and the weight of the blowout preventer are greatly simplified.