64results about How to "Easy to use in engineering" patented technology

The invention discloses a detachable and easy-maintenance fan hanger, and relates to the field of electromechanical equipment installation. The fan hanger comprises suspension arms, bolts, shock absorbing supports, cross arms, upper bearing seats, screws and lower bearing seats, wherein the upper ends of the suspension arms are fixedly arranged below a structural plate, and are distributed at the two ends of the cross arms, and the two ends of the cross arms are welded with nut seats matched with the screws; the upper bearing seats are fixedly arranged above joints of the cross arms and the suspension arms, and ball bearings are fixedly arranged in the upper bearing seats; small holes are formed in the suspension arms, and the lower bearing seats are arranged on the ground; thrust bearings are arranged in the lower bearing seats, and the lower bearing seats are upwardly connected with the cross arms and the upper bearing seats through the screws. The defects that the fan is difficultly disassembled and assembled, the fan needs to be transferred from the installation height to the ground by the load climbing operation of operating personnel, and the potential risks exist in the prior art are overcome. The invention also discloses a construction method of the detachable and easy-maintenance fan hanger.

The invention discloses a red mud curing agent and a use thereof and belongs to the technical field of red mud comprehensive utilization. The red mud curing agent comprises 20-90 parts of slag powder, 1-50 parts of fly ash, 1-30 parts of silt, 5-15 parts of a catalysis exciting agent containing sodium, potassium, calcium and magnesium and 0.1-10 parts of whisker fibers. Fly ash and silt can well adjust a silicon-aluminum ratio of red mud and liquid-plastic limit index and improve engineering body strength performance indexes and engineering usability. Whisker fibers improve a flexural capability and crack resistance of the finished product. The red mud curing agent is powdery solid, is convenient for engineering use, and can be used by addition and stirring based on a ratio according to different engineering performance requirements. Through reasonable blending, the red mud curing agent can improve strength of a cured body containing red mud as a main component, completely satisfy building non-burnt brick, road base and surface layer engineering index requirements and realize large consumption of red mud.

The invention discloses a calibrating ball based wave-absorbing material reflectivity testing method. According to the method, a main control computer, a transmitter, a receiver, a transmitting antenna and a receiving antenna are taken as a testing system, and the testing accuracy of the reflectivity of a wave-absorbing material is increased through the calibrating ball based reflectivity testing method. The calibrating ball based wave-absorbing material reflectivity testing method not only solves the problem of testing error caused by alignment errors, transceiving coupling and the like between a tested target and the transmitting and receiving antennas in the process of testing the reflectivity of the wave-absorbing material, but also increases the testing accuracy; moreover, the method provided by the invention is simple in implementation mode and flexible in installation.