6results about How to "Guaranteed compression performance" patented technology

A device for reforming synthesis gas generated by biomass pyrolysis gasification without pressurization generates hydrogen-rich gas from cellulose-rich biomass through non-pressure conversion, and is suitable for methanol production. Pyrolysis and carbon gasification are carried out in separate gasification chambers, and a mixed gas of superheated steam and oxygen can produce a synthetic feed gas (14) containing a small amount of inert gas. The synthetic feed gas (14) is heated to 1300 DEG C in the multiple high-temperature gas-gas silicon carbide tube heat exchanger. The heat exchange is carried out by means of silicon carbide heat exchange tubes (23) which are placed contiguously adjacent to each other. At the temperature of 1000 DEG C or above, the vortex generator (25) can strengthen the conversion reaction, and the generated centrifugal force is 35000 times of the self weight of the gas particles. Since the high temperature heat exchanger allows process heat to be recirculated at a high temperature level, only minimal heat loss occurs. Straw ash is unmelted and is suitable for use as a fertilizer.

The utility model relates to the technical field of boring and milling machines, and discloses a floor type boring and milling machine with a longitudinal positioning component, which comprises a boring and milling machine main body, a base is fixedly arranged at the bottom end of the boring and milling machine main body, a sliding table is connected to the top end of the base in a sliding manner, and a supporting component for supporting the sliding table is arranged at the bottom end of the sliding table. A first hydraulic cylinder for driving the supporting assembly is fixedly installed in the base, a first four-jaw chuck is fixedly installed in the middle of the top end of the sliding table, and a support is fixedly arranged at the top end of the sliding table. The workpiece can be supported through the sliding table, the bottom of the workpiece can be limited through the first four-jaw chuck, when the workpiece is high, the top end of the workpiece can be limited through the limiting assembly, the fulcrum of the workpiece is increased, the stability of the two longitudinal ends of the workpiece can be kept, and the machining precision of the workpiece is improved; and the size change of the workpiece in the longitudinal direction caused by self thermal deformation or clamping stress is reduced.

This invention relates to the field of railway construction technology, particularly to freight railway structures and their construction methods and systems. The structure includes an embankment structure situated on the ground, with railway track assemblies fixedly installed on top of the embankment structure. The railway track assemblies are rigidly connected to the top of the embankment structure. The embankment structure comprises a top subgrade layer and a bottom subgrade layer, arranged from top to bottom, with the railway track assemblies installed on the top subgrade layer. This freight railway structure utilizes its underground foundation reinforcement layer to provide stable support for the entire above-ground structure. Simultaneously, the embankment structure above ground employs an underground structure for multi-layered reinforcement, effectively ensuring the bottom bearing capacity of the entire top subgrade layer and providing stable bottom foundation support for the installation of the railway track assemblies. This effectively guarantees the load-bearing capacity of the entire structure against static and dynamic loads under freight transport conditions.

The application discloses a kind of highway tunnel initial support collapse treatment reinforcing device and its construction method, including highway tunnel portal, the inside of highway tunnel portal is provided with arch guide wall, the outside of arch guide wall is evenly provided with odd guide hole and even guide hole.The steel arch and several guide steel pipes are arranged in the inside of arch guide wall, and the several guide steel pipes are welded on the outside of steel arch, and the compression resistance of arch guide wall is enhanced to some extent by the combination of the two;By inserting the pipe shed steel pipe into the inside of several odd guide holes and several even guide holes, inserting the reinforcement cage into the inside of pipe shed steel pipe, grouting in the grouting filling part between reinforcement cage and pipe shed steel pipe, and filling mortar in the mortar filling part between pipe shed steel pipe and each odd guide hole or each even guide hole, so that the arch guide wall and the pipe shed steel pipe in its inside can be combined to form strong support to prevent the collapse of working face.

The utility model relates to the technical field of ore crushing, in particular to a compression-resistant roller tire which comprises two tire roller mechanisms rotating oppositely. Each set of tire roller mechanism comprises a roller shaft connected with the driving mechanism, a roller sleeve arranged on the roller shaft in a sleeving mode, a connecting sleeve used for connecting the roller shaft and the roller sleeve and a supporting frame used for connecting and installing the tire roller mechanism to the roller press body, and the two ends of the roller shaft are detachably installed on the supporting frame; the roller sleeve comprises a first ring sleeve unit and a second ring sleeve unit which are alternately installed on the connecting sleeve, the second ring sleeve unit is formed by splicing a plurality of detachable fan-shaped blocks, and extension plates are connected to the two ends of each fan-shaped block in an integrally-formed mode. According to the utility model, the installation process can be simplified while the parts can be disassembled, assembled and replaced at will, the connection stability and the pressure resistance are ensured, and the connector is not easy to loosen in the use process.

The utility model discloses a kind of tire belt structure, including carcass, the outer surface of the carcass is equipped with tread, the inside of the carcass is fixedly embedded with intermediate belt, the both ends of the intermediate belt are fixedly attached with end head belt, the intermediate position of the end head belt is equipped with bending portion, one end of the bending portion is equipped with folding belt, the outer surface side of the folding belt is fixedly attached with first wrapping belt, one end of the first wrapping belt is equipped with support belt, the side surface of the support belt is fixedly connected to the lower surface of folding belt, the other side surface of the support belt is fixedly attached with the outer surface of intermediate belt, the outer surface side of the end head belt is fixedly attached with second wrapping belt, can be combined after partition connection reinforcement, guarantee accuracy and stability, facilitate production connection, effectively improve impact resistance and load effect, high adaptability.