Abstract: Disclosed is a method and a system for pipeline temperature control of smart gas based on IoT. The method is implemented based on the system for pipeline temperature control of smart gas based on IoT, comprising: obtaining pipeline information of a gas pipeline and basic perceptual data collected and uploaded by a gas equipment object platform, obtaining at least one candidate parameter from a government safety supervision management platform, and determining at least one transportation parameter based on at least one iterative interaction with the government safety supervision management platform; and controlling, based on the at least one transportation parameter, an air compression device of the gas equipment object platform to adjust a gas transportation temperature.

Abstract: Embodiments of the present disclosure provide a method and an Internet of Things (IoT) system for monitoring welding of a smart gas pipeline based on government supervision, the system comprising a smart gas government safety supervision platform, a smart gas government safety supervision sensing network platform, a smart gas government safety supervision object platform, a gas company sensing network platform, and a gas construction object platform.

Abstract: A traction drive elevator, comprising: an elevator car, a pair of guide rails, a counterweight, a traction drive motor comprising a housing, a stator, a rotor and a traction sheave; wherein the guide rails are disposed in a hoistway; both ends of the housing are symmetrically fixed to a side wall of the hoistway; the housing operates as a bearing beam; and the elevator car and the counterweight are suspended on the traction sheave of the traction drive motor via a plurality of wire ropes. Since the traction drive motor occupies no additional vertical space in the hoistway, space utilization ratio of the vertical space in the hoistway is increased, the height of the top floor is decreased, and building materials are saved.

Abstract: Provided is an elevator car frame, comprising: an elevator cage, a main elevator car frame comprising a pair of main columns, an upper main beam and a lower main beam, and a pair of diversion sheaves; wherein the main columns are disposed on both sides of the elevator cage; the upper main beam is disposed above the elevator cage; the lower main beam is disposed below the elevator cage; the diversion sheaves are disposed on one side of the upper main beam; and a line connecting centers of the diversion sheaves is parallel to the upper main beam. The invention features increased working space, reduced height of the elevator car roof, and lower cost.