Shandong University

Yanshan University

Shandong Jianzhu University

Citic Dicastal Co., Ltd

Shandong Jianzu University

Engineering Appraisal and Reinforcement Institute Co.,ltd, Shandong Jianzhu University

Jun Wang

Chuanzhen Huang

Hongtao Zhu

Bin Zou

Hanlian Liu

Peng Yao

Zhen Wang

Longhua Xu

Shuiquan Huang

Zuo Xu

Hanqi Wu

Dun Liu

Zhenyu Shi

Hougang Ding

Shengzhi Wu

Jianyong Han

Guohui Liu

Xiao Liu

Zhigao Yin

Xiaopeng Chen

Shide Li

Yan Zhang

Meina Qu

Yabin Guan

Zhengkai Xu

Minting Wang

Desheng Chen

Bo Wang

Jian-ping Zuo

Hou-gang Ding

Wan-peng Huang

Long Tian

Guangbiao Shao

Erbin Liang

Zhikang Wang

Xuefei Liu

Zhen Chen

Binghao Li

Xiao Lv

Jianping Zuo

Jiepeng Tian

Xingming Zhang

Xisen Fan

Xiang Gao

Chuan-gen Zhu

A monocrystalline silicon micro-nano dual-scale anti-reflection texture and a preparation method therefor. The preparation method combines nanosecond-laser-assisted waterjet near-damage-free processing and femtosecond laser scanning, and subsurface damage caused by a re-cast layer phenomenon and a hot crack in a monocrystalline silicon laser texturing process can be effectively reduced by combining a nanosecond-laser-assisted waterjet near-damage-free processing technology and an ultra-short pulse femtosecond laser cold processing technology; and meanwhile, a micro-scale frame structure and a nano-scale structure can be flexibly modified respectively by adjusting nanosecond-laser-assisted waterjet technological parameters and femtosecond laser technological parameters, a geometry light trapping effect and an effective dielectric effect can be achieved in a micro-nano dual-scale hybrid structure at the same time, and surface reflection is reduced.

Monocrystalline silicon micro-nano dual-scale anti-reflection texture and preparation method therefor

The present invention provides a composite supporting structure combining fabric-form bag-behind-wall grouting and high-strength support frames and a construction method thereof, relating to the field of underground engineering support. The composite supporting structure comprises multiple sections of composite supporting units sequentially arranged in a longitudinal direction, wherein each of the composite supporting units comprises support frame, circumferential fabric-form bags are arranged outside top plate sections and side sections of the support frames, and longitudinal fabric-form bags and longitudinal supports are arranged in an alternating manner outside bottom plate sections of the support frames. The present invention forms an active-passive combined full-section composite high-strength supporting structure that may solve the problems of support difficulties such as high ground pressure, strong disturbance and the like of deep wells.

Composite supporting structure combining fabric-form bag-behind-wall grouting and high-strength support frames, and construction method thereof

A milling machine fly-cutter with adjustable cutting-tool geometric angle and milling machine includes a fly-cutter plate body, a plurality of combination grooves are evenly set in the circumferential direction of the fly-cutter plate body, and adjusting assemblies are mounted in the combination grooves. Wherein, the adjusting assemblies include an adjusting block for rake angle and relief angle, an adjusting block for tool cutting edge angle and minor cutting edge angle, an adjusting block for tool cutting edge inclination angle. A first side of the adjusting block is attached with a cutter handle, and a second side is connected with the adjusting block for rake angle and relief angle by the adjusting block for tool cutting edge angle and minor cutting edge angle. The milling machine fly-cutter realizes adjustment of the geometric angles of cutting tool, and is able to adapt to cutter handles of a variety of different specifications.

Milling machine fly-cutter with adjustable cutting-tool geometric angle and milling machine

The present invention relates to the field of new materials technology, in particular to carbon nitride composite ceramic tool materials, preparation method and cutting tools thereof. The raw materials comprise carbon nitride, titanium carbonitride, molybdenum, nickel and cobalt, carbon nitride as the matrix phase, titanium carbonitride as the reinforcing phase are added to the carbon nitride based composite ceramic materials, with molybdenum, nickel and cobalt as a suitable sintering aid, dense composite tool material is obtained with vacuum hot press sintering method. The prepared carbon nitride based composite ceramic tool materials boast the advantages of low cost, high hardness, high bending strength and high fracture toughness, which is an important way to promote the innovation, development and popularization of carbon nitride materials.

Carbon nitride based composite ceramic tool materials, preparation method and cutting tool thereof

A BTA drilling quick-stop device (QSD) and a method, wherein the BTA drilling QSD includes a base. The base includes a hollow cavity. A side portion of the base has an opening communicating with the hollow cavity. The opening is closed by a through cover. A horizontally movable fixture is disposed in the hollow cavity. A stopper is disposed at a top portion of the base. A bottom portion of the stopper is disposed lower than a top portion of the fixture to stop the fixture from moving during processing. An elastic element is disposed between the through cover and a side portion of the fixture to push the fixture to move after processing.

BTA drilling quick-stop device and method

Determining an active jacking force of a tunneling closely undercrossing existing station, includes: acquiring design parameters of stations, and geological parameters of a construction site; obtaining a stress solution expression of the active jacking force on the existing station to obtain a stress solution of any point in a semi-infinite space under the action of a vertical load, replacing the vertical load with a vertical load acting on the existing station, and obtain a vertical stress solution of the existing station; obtaining a relational expression between the deflection and the stress solution of the existing station; and substituting the stress solution expression of the active jacking force into the relational expression between the deflection and the stress solution of the existing station according to boundary conditions at both ends of a beam on elastic foundation to obtain the active jacking force that controls the deflection of the existing station.

Method for determining active jacking force of tunneling closely undercrossing existing station

A composite support system based on a steel-concrete (concrete-filled steel tube) support and a shotcrete arch includes an anchor mesh layer provided on an inner wall of a roadway. A flexible compressible layer is provided on the outer side of the anchor mesh layer; a support frame is erected on the outer side of the flexible compressible layer; reinforcement meshes are respectively arranged on an inner side and an outer side of the support frame; the support frame and the reinforcement meshes form a framework to construct an arch spray layer; the reinforcement meshes and the support frame are embedded into an arch structure to form a rigid layer; the flexible compressible layer is provided between the rigid layer and the anchor spray layer. When the flexible compressible layer is compressed, the flexible compressible layer is deformed toward a reserved deformation space for a yielding purpose.

Composite support system based on steel-concrete support and shotcrete arch and construction process thereof

The present disclosure belongs to the technical field of tests of automobile wheels and automobile chassis suspension systems, and provides a simulated pavement rotary drum and automobile test equipment. A simulated cobblestone pavement, and a simulated impact pavement, so that a testing pavement at a test field is reproduced; an impact load caused by the track pavement, the cobblestone pavement, and the impact pavement can be applied to wheels and a chassis system; and a road simulation test of wheels and a suspension system of an automobile can be performed on bench test equipment. As verified, the simulated pavement rotary drum of the present disclosure can reproduce the simulated track pavement at the test field; and the consistency of radial impact loads is greater than 95% at the same speed and under the same vehicle load operating condition.

Simulated pavement rotary drum and automobile test equipment

A composite support structure, a construction system, and a method, the composite support structure includes a plurality of arc plate rings that are longitudinally arranged along a roadway. A concrete fill steel tube support is arranged on an inner side or an outer side of each arc plate ring. The arc plate ring is formed by splicing a plurality of arc plates. Each concrete fill steel tube support is formed by splicing a plurality of steel pipe sections. The arc plate rings and the concrete fill steel tube supports are capable of jointly supporting walls of the roadway. The support structure has high bearing capability, high construction efficiency of a construction system, and low labor intensity.

Composite support structure, construction system, and method

A single-crystal &#x3b2;-GaOMSM detector and a preparation method thereof, comprising: machining grooves on a single-crystal &#x3b2;-GaOsubstrate using a laser-assisted waterjet machining technique to form a 3D shape; wet etching the machined single-crystal &#x3b2;-GaOsubstrate using an HF solution to remove machining damage; performing Au evaporation on a surface of the single-crystal &#x3b2;-GaOsubstrate after processing, coating an Au thin film on the surface of the single-crystal &#x3b2;-GaOsubstrate; and grinding the surface of the single-crystal &#x3b2;-GaOsubstrate after evaporation to remove the Au thin film on an undressed surface and retain the Au thin film in the grooves, and then obtaining the single-crystal &#x3b2;-GaOMSM detector.

Single-crystal beta-GaOMSM detector and preparation method thereof

A self-centering device for a liner press-fit wheel may improve center alignment when liners are pressed in bolt holes of the wheel, may reduce rejects generated when bolt hole materials are pressed out by alignment failures, and may improve a press-fit yield.

Self-centering device for cylinder liner press-fit wheel

A self-rotation cleaning device has outer and inner housings, a workpiece rotating system, an ultrasonic cleaning system and a fluid perfusion system. The inner housing is in the outer housing in a horizontal direction. A cylindrical cavity is inside the inner housing. One end of the inner housing has a sealing cover detachably connected thereto, and the other end is closed. The workpiece rotating system is in the cavity for fixing a member to be cleaned, and realizes self-rotation of the member. The ultrasonic cleaning system supplies mechanical energy to the cleaning liquid in the inner housing to generate bubbles therein. The bubbles remove residual resin attached to the cleaned member surface by continuous vibration and burst. The fluid perfusion system provides self-rotation power for the cleaned member, and continuously delivers the cleaning liquid to the inside of the cleaned member, and the cleaning liquid is carried out after cleaning.

Self-rotation cleaning device and device for cleaning photo-cured tissue engineering scaffold

Growing community of inventors

Jinan, China

Jun Wang