106results about How to "Reduce erection cost" patented technology

The pipe arrangement (100) for feeding fluid to a fluid-receiver (103) from a fluid-supplier (102) through a pipe, includes a wire (113) tensioned between a first support (301) and a second support (302), a hollow fluid-feeding pipe (120) extending between the first and second supports, and a hanger (130) for allowing the fluid-feeding pipe (120) to hang from the wire (113). The fluid-feeding pipe (120) is comprised of a plurality of fundamental pipes (150) capable of being connected to one another. A second fundamental pipe connected to a first fundamental pipe can extend and contract axially thereof relative to the first fundamental pipe, and can further bend obliquely relative to the first fundamental pipe.

The invention discloses a prefabricated steel highway bridge, which comprises steel trusses and a big beam mounted between the steel trusses. The steel truss comprises an upper chord member, a lower chord member, and vertical bars supporting between the upper chord member and the lower chord member in a spaced manner. A rhombic supporting frame is arranged inside a rectangular frame which consists of the two adjacent vertical bars, the upper chord member and the lower chord member, wherein the rhombic supporting frame consists of four sloped bars respectively fixed at the centers of the upper and lower chord members and the vertical bars. A clamping member for internally clamping two adjacent sloped bars through fastening bolts and forming a supporting plane between the two sloped bars is arranged on the lower chord member at the bottom of the rhombic supporting frame, and the big beam is horizontally placed on the supporting plane. Two U-shaped bolts with downwardly oriented openings are arranged on two sides of the lower chord member so that the big beam, the clamping member and the lower chord member are connected together, and a connector for connecting the two U-shaped bolts together is arranged at the bottom of the lower chord member. The invention has the following advantages: a smart fixing manner is designed based on a steel truss of a traditional structure so that the prefabricated steel highway bridge floor is widened.

A speed estimation method including a reference value establishing step, an actual value establishing step, an approximate location calculating step, a weight location calculating step, a weight location determining step and a speed calculating step is disclosed. The reference value establishing step determines a plurality of training locations and establishes a reference signal strength set for each training location. The actual value establishing step establishes an actual signal strength set of a communication device at a time point. The approximate location calculating step calculates a plurality of signal strength differences according to the actual signal strength set and the reference signal strength set, and generates a plurality of approximate locations. The weight location calculating step calculates a weight location of the communication device. The weight location determining step determines whether two weight locations are obtained. The weight location determining step calculates a speed of the communication device.