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107results about How to "Safe and smooth" patented technology

System and method for intelligent vehicle break-down service on basis of vehicle internet

ActiveCN103209220AGood matchImprove rescue level and service qualityTransmissionService systemVehicle networks
The invention discloses a system and method for vehicle break-down intelligence service on the basis of a vehicle internet. The vehicle network technology is used as a carrier, and the intelligent vehicle break-down service system composed of a vehicle-mounted monitoring client, a roadside communication facility, a rescue maintenance station and an intelligent vehicle service platform is built. A vehicle-mounted device acquires that vehicle running information and the intelligent service platform are interacted, and the intelligent service platform performs remote monitoring diagnosis control so as to master vehicle running state in real time and give specialized instruction. Once a vehicle runs abnormally, a vehicle-mounted terminal can automatically upload information to the intelligent service platform to request rescue, the intelligent service platform is interacted with information of the rescue maintenance station to feed back an optical rescue maintenance scheme to the broken-down vehicle so as to achieve efficient docking with emergency rescue, and simultaneously the broken-down vehicle enables warning content to be published on the roadside communication facility so as to perform early warning on subsequent vehicles in time.
Owner:JIANGSU UNIV

Far field key stratum roof cutting and pressure releasing roadway protection method based on triangular plate structure model

InactiveCN106894816AAlleviate the appearance of strong mine pressureSafe and smoothUnderground miningSurface miningEconomic benefitsEngineering
The invention discloses a far field key stratum roof cutting and pressure releasing roadway protection method based on a triangular plate structure model and belongs to the field of coal mining. The method comprises the steps that the stratum position of a far field key stratum influencing working face free roadway mine pressure behavior is determined; the arranged position coordinate of ground drilling is determined, and drilling construction is conducted; and a complete cutting fracture plane parallel to a coal pillar is formed on the far field key stratum through the ground drilling fracturing technology. Presplitting of the far field key stratum above a free roadway in advance is facilitated, and the cutting plane parallel to the coal pillar is formed on the far field key stratum, so that stress transferring is obstructed, mine pressure is released, the length of a lateral rotation block body of a fractured side original roof rock stratum of the free roadway is reduced, the strong mine pressure behavior of the free roadway can be relieved essentially, the supporting requirement of a roof is reduced, accordingly the reserved width of the coal pillar is reduced greatly, the coal recovery rate is increased effectively, and economic benefits are increased.
Owner:CHINA UNIV OF MINING & TECH

High-rise, fire-fighting, rescue and construction equipment

An elevator system for traveling on a rail attached to the outside of a high-rise building. One elevator has a telescopic arm attached for reaching any position on or above the building. The telescopic arm consists of two parts, which are interconnected with a pivoting mechanism. The crane portion has a rotating mechanism and a pivoting mechanism for supporting one end of the arm. A functional compartment is provided in a building, a sliding frame is mounted in this compartment, connected with jack mechanisms; with the help of these mechanisms the sliding frame can slide beyond the outer limits of the building and back. Smooth and safe sliding of the frame is ensured by its supporting wheels sliding in guiding rails mounted in the surfaces of the functional compartment. The sliding frame is equipped in its front part, with a receiving panel with the right and left “pocket” guiders on it. The attachable section of the H-shaped rail is equipped with a mounting panel, wit the similar square structure as of the receiving panel. The thickness of the mounting panel is less than a clearance between the “pocket” guiders and the outer surface of the receiving panel. The receiving panel is supplied with beveled guiding sides, and the mounting panel—with lower rounded corners. The lower part of the functional compartment has a concrete basis. The auxiliary portion has a movable ladder. The back surface of the cabin is equipped with an attachable frame supplied with round mechanical brushes and a profile with holes for fluid sprayers and air routes. The frame is also equipped with fixing handles for mounting-demounting operations of the attachable frame.
Owner:KORCHAGIN PAVEL V +4

Fault protection method for steady-state operation testing apparatus of modular multilevel converter (MMC) valve

The invention relates to a fault protection method for steady-state operation testing apparatus of a modular multilevel converter (MMC) valve. The fault protection method selects one protection mode according to fault types. The fault types include earth fault, energy complementing power fault, valve fault and communication fault. When the earth fault occurs, insulated gate bipolar translator (IGBT) driving protection of an MMC auxiliary valve or an MMC sample valve is used as main protection and over-current detection of a main controller is used as backup protection. When the energy complementing power fault occurs, a protective measure I or a protective measure II is carried out, the energy complementing power gives an alarm and reports the fault or abnormality to an upper computer. When the valve fault occurs, the protective measure I is carried out, trigger pulse of the MMC auxiliary valve or the MMC sample valve is shut. When the communication fault occurs, the protective measure I is carried out and fault is reported to the upper computer. By means of the fault protection method, fault types are recognized and all the faults are graded, all kinds of protection are arranged in different levels and are matched with one another, and thus rapidity of protecting actions is ensured and fault removal of the testing device is benefited.
Owner:STATE GRID CORP OF CHINA +2

Collapse-prevention two-way rib wing jetting grouting drill bit and using method thereof

The invention discloses a collapse-prevention two-way rib wing jetting grouting drill bit and a using method thereof. The collapse-prevention two-way rib wing jetting grouting drill bit comprises a drill bit body connected with an outer flat drill rod. A rib wing is arranged on the side face of the drill bit body in the longitudinal direction of the drill bit. The rib wing comprises a forward wing piece, a reverse wing piece and a lateral wing piece, wherein the forward wing piece is arranged at the front end of the drill bit, the reverse wing piece is arranged at the rear end of the drill bit, and the lateral wing piece is connected with the forward wing piece and the reverse wing piece. The included angle formed between the forward wing piece and the lateral wing piece and the included angle formed between the reverse wing piece and the lateral wing piece are obtuse angles. An inner through hole communicated with a through hole in the outer flat drill rod is formed inside the drill bit body. A jetting hole communicated with the inner through hole is formed in the surface of the drill bit body. When the drill bit rotates, vertical movement is achieved through rotation of the forward wing piece and the reverse wing piece, drop pieces of the wall of the hole can be eliminated through cutting of the rib wing or the drop pieces can be extruded into the wall of the hole again, and grouting reinforcement and repairing of the wall of the hole are achieved.
Owner:SHANDONG UNIV

Pipe-jacking construction method for large section of complicated formation

The invention discloses a pipe-jacking construction method for a large section of a complicated formation. The pipe-jacking construction method for the large section of the complicated formation comprises the steps of control of settlement of existing structures in a pipe-jacking construction process, control of construction parameters during jacking in different geological formations, control ofjacking in a formation which is soft in top and hard in bottom, control of jacking in a hard rock stratum and line-type control in curve pipe-jacking and process. A seam at a curve pipe-jacking jointmeets the requirement, it ensures that water does not leak from a seam between pipes, the engineering quality is ensured, a jacking pipe can successively downwards penetrate through a high-speed waterguiding pipe and a sewage pipe, the safety of various structures is ensured, it can be ensured that settlement of a pipe-jacking line is in a controlled state, potential safety hazards are reduced, settlement can be controlled effectively, the jacking pipe can safely and smoothly penetrate through the formation, the safety of opening a bin for changing a knife can be ensured, and smooth jacking of a pipe-jacking machine under the condition of hard rocks is ensured.
Owner:CHINA RAILWAY ERJU CHENGDU NEW-TECH BLASTING ENG CO LTD

Frame structure system and construction method thereof

The invention provides a frame structure system and a construction method thereof. The frame structure system comprises a plurality of composite columns and composite beams. Each composite column comprises a prefabricated column mold shell and a cast-in-situ concrete column inner core. Each composite beam comprises a prefabricated beam mold shell and a cast-in-situ concrete beam inner core. The top side of each prefabricated beam mold shell is provided with a grouting hole and an exhaust hole. 1-20cm of the end head of each composite beam is in lap joint with the edge of the top side of the corresponding composite column. The composite beams and the composite columns are connected through cast-in-situ concrete to form beam-column joints. The end heads of beam rebars of the composite beamsextend out of the ends of prefabricated beam mold shells and are anchored in the cast-in-situ concrete of the beam-column joints. The construction method comprises the following steps that prefabricated column mold shells are hoisted to the predetermined positions; the cast-in-situ concrete beam inner cores of the composite columns are formed through grouting; the prefabricated beam mold shells are hoisted, and 1-20cm of the end heads of the prefabricated beam mold shells are in lap joint with the edges of the top sides of the prefabricated column mold shells; templates at the beam-column joints are erected; the cast-in-situ concrete beam inner cores of the composite beams are formed through grouting; the concrete at the beam-column joints is grouted; and the steps are repeated until construction of the building frame is completed.
Owner:江苏千禧杭萧装配式建筑科技有限公司

Treatment method for expansion joint of bridge

The invention relates to the technical field of bridge repair, in particular to a treatment method for an expansion joint of a bridge. The method comprises the following steps of inspecting the expansion joint of the bridge at a preset time period; positioning a damaged part in an expansion structure; lifting a support beam, and replacing the damaged part. According to the treatment method for the expansion joint of the bridge, the expansion joint of the bridge is periodically inspected, and whether a part in the expansion structure in the expansion joint of the bridge is damaged or not is timely discovered; a complete set of expansion joint is not required to be integrally dug out to cause damage to a concrete structure at the expansion joint of the bridge, so that the expansion joint is not required to be integrally replaced, the bridge of which the complete set of expansion joint is to be replaced is not required to be controlled for 30 to 45 days, the maintenance cost is reduced, the bridge can be maintained within a short time (about 2 to 3 days), and the traffic safety and smoothness of the bridge are ensured.
Owner:刘金顶
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