Abstract:
The present invention claims a three-truss continuous steel truss girder-pushing device and an arrangement method thereof. The device comprises three supporting structures of left, center and right, the three supporting structures are provided respectively with left and right side truss slideway girders and a middle truss slideway girder. The front ends of the slideway girder are provided with an operating platform where horizontal continuous pushing jacks are installed; the front ends of the left and right slideway girder and the center slideway girder are each provided with four vertical lifting jacks. The three-truss continuous steel truss girder-pushing device simultaneously pushes the two side trusses of the steel truss beam only, while the center truss slides passively, thereby improving construction efficiency and reducing construction costs.
Abstract:
An exemplary support stand includes a base, a connecting assembly, a support bracket, two first hinge assemblies, and two second hinge assemblies. The connecting assembly is arranged between the base and the support bracket. The first hinge assemblies rotatably connect the connecting assembly to the base. The second hinge assemblies rotatably connect the connecting assembly to the support bracket. The connecting assembly comprises a connecting bracket and a connecting plate partially received in the connecting bracket. The connecting plate, the connecting bracket, one first hinge assembly, and one second hinge assembly form a quadrangle.
Abstract:
An exemplary support stand includes a base, a connecting assembly, a support bracket, two first hinge assemblies, and two second hinge assemblies. The connecting assembly is arranged between the base and the support bracket. The first hinge assemblies rotatably connect the connecting assembly to the base. The second hinge assemblies rotatably connect the connecting assembly to the support bracket. The connecting assembly comprises a connecting bracket and a connecting plate partially received in the connecting bracket. The connecting plate, the connecting bracket, one first hinge assembly, and one second hinge assembly form a quadrangle.
Abstract:
A method of methacrylate production includes the steps of providing methacrylate gas mixture; absorbing said gas mixture by water to form a solution mixture; introducing said solution mixture into a distillation column, separating impure methacrylate from said solution mixture in said distillation column that solution of said impure methacrylate is collected at said stripping section of said distillation column; and removing acetic acid from said impure methacrylate to produce methacrylate. It effectively enhances the separation capacity of the distillation column, lowers the whole column pressure drop and operation temperature, avoids the polymerization tendency of the methacrylate under high temperature, to make the water content of the bottom discharging decreases to 0.6%, acetic acid content reduces to below 2%, methyl acrylic content of the top column water phase decreases to 0.5%, thereby reduces the methacrylate products unit consumption and improves the product quality.
Abstract:
A method for data traffic transmission on a synchronous digital network to overcome the inefficiency of the data packet transmission on the synchronous digital network equipment. The method includes, adding a RPR processing module after Ethernet interface in the equipment; through the RPR processing module, an uplink Ethernet frame from Ethernet interface being mapped to a RPR frame; through LAPS/PPP/GFP protocol, the RPR frame being mapped into the payload of a synchronous digital network; the volume and number of the VCs and total bandwidth of the RPR being configurable. When the RPR frame arrives at the destination node of the RPR, it is stripped from the RPR and recovered to its original Ethernet frame. The method and device transmit data service efficiently, and the total bandwidth of the RPR is adjustable and is statistically multiplexed.
Abstract:
Embodiments relate generally to a filter (110), for example, for attachment onto a gas detector device or a gas sensor, and attempt to improve the efficiency and service life of the filter (110). Embodiments typically comprise a dustproof membrane (114) and a waterproof membrane (113). Some embodiments may also comprise a splash-proof cap (130) and/or features to reduce negative pressure on the filter (110).
Abstract:
A spike strip for disabling vehicle tires is disclosed which is formed from a scissor arm assembly of a plurality of arms engaged at pivots. Moveably from a collapsed position to an elongated position the assembly has a plurality of spikes engaged thereon for puncturing vehicle tires. The spikes can be removed and replaced and can be formed into spike nets by an engaged cable.
Abstract:
The present invention relates to a nozzle for guiding a metal melt from a first to a second means, in particular it relates to a submerged entry nozzle for guiding a stream of a metal melt (steel melt) from a metallurgical melting vessel (like a tundish) into a mould (like an ingot), both of which may also be called “reservoir”.