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62results about How to "Free shipping" patented technology

Construction process for superlarge-section and large-dip-angle tunnel type pile foundation

The invention discloses a construction process for a supperlarge-section and large-dip-angle tunnel type pile foundation. The pile foundation to be constructed is a reinforced concrete pile. A pile hole of the reinforced concrete pile is a superlarge-section large-dip-angle tunnel hole. In construction of the pile foundation to be constructed, the process comprises the steps of firstly, pile hole construction, i.e., 101, advanced pipe shed support construction is conducted at the top of the pile hole, 102, hole mouth protection is conducted and a hole mouth support structure is constructed at a hole mouth of the pile hole, and 103, pile hole excavation construction is conducted, a full section excavation method is adopted for the pile hole excavation with a plurality of construction segments arranged from top to bottom, and a full section support structure is adopted for supporting; and secondly, pile body construction, i.e., the pile body of the reinforced concrete pile is constructed, and the construction process comprises the two steps of reinforcing cage binding and concrete spouting. The construction process for the supperlarge-section and large-dip-angle tunnel type pile foundation is simple in step, reasonable in design, low in investment cost, simple and easy to construct, good in use effect and capable of easily and fast completing the construction process of the tunnel type pile foundation, and the construction process is easy to control.
Owner:CHINA RAILWAY FIRST GRP CO LTD +2

Nanosheet field effect transistor and preparation method thereof

The invention provides a nanosheet field effect transistor and a preparation method thereof, and the method comprises the steps: forming a nanosheet layer and a sacrificial layer on a semiconductor substrate, forming an insulation isolation structure in the nanosheet layer and the sacrificial layer, removing the sacrificial layer through dry etching, etching the insulation isolation structure, andforming a nanosheet supporting part; forming continuous gate insulating layers on the surfaces of the nanosheet and the nanosheet supporting part, and forming a second gate insulating layer between the gate insulating layers on the outer sides of the connecting parts, and forming a metal gate between the gate insulating layer and the second gate insulating layer. According to the invention, the sacrificial layer is removed and the insulation isolation structure is etched to form the nanosheet supporting structure in the same equipment, so the transportation or movement of the structure is avoided, and the nanosheet is prevented from being damaged due to factors such as physical vibration and the like. And the stability of the nanosheet is further improved by the gate insulating layer. Inaddition, dry etching is adopted in the method, and the damage, caused by chemical reagents, to the nanosheet is avoided.
Owner:SIEN QINGDAO INTEGRATED CIRCUITS CO LTD

Ultralarge section inclined single-pile foundation construction process based on vertical lifting system

The invention discloses a ultralarge section inclined single-pile foundation construction process based on a vertical lifting system. A constructed ultralarge section inclined single-pile foundation is a reinforced concrete pile, and is provided with a reinforcement cage inside; the ultralarge section inclined single-pile foundation is constructed by the following steps: (1) the advance support construction is performed for a pipe roof; (2) hole opening protection: a hole opening support structure is constructed in a hole opening of a pile hole; (3) the vertical lifting system is installed; (4) the excavation, the slag discharge and the support construction are performed for the pile hole. The pile hole is excavated by multiple construction sections from top to bottom through a full-section excavation method; the slag discharge is synchronized in the excavation process; and the wall protection construction is respectively performed for pile hole sections excavated by all the construction sections; and (5) pile body construction: the reinforcement cage is bound and concrete is filled. The process is simple in steps, reasonable in design, low in investment cost, convenient for construction and excellent in use effect, can simply and quickly finish the construction process of the ultralarge section inclined single-pile foundation, and is easy to control the construction process.
Owner:CHINA RAILWAY FIRST GRP CO LTD +1

Consignment-free single steel wire road roller

The invention provides a consignment-free single steel wire road roller, and belongs to the technical field of a road roller. The consignment-free single steel wire road roller comprises a roller body, the roller body is provided with a rack, the rack is provided with a pressing wheel, and the consignment-free single steel wire road roller is characterized in that the rear end of the roller body is provided with a weight box, the roller body is symmetrically provided with two roller wheels in the left and right, the front end of the roller body is provided with the rack, the rack is internally provided with the pressing wheel, the two ends of the pressing wheel are provided with fixed shafts, the rack comprises an upper support arm and a lower support arm, the lower end of the upper support arm is provided with a hydraulic cylinder, the lower end of the hydraulic cylinder is connected with the fixed shafts, and the fixed shafts are connected to the lower support arm in a slidable mode. The consignment-free single steel wire road roller has the advantages that regarding the roller, the structure of the roller body is changed, the rack is arranged at the front end of the roller body, the rack is internally provided the hydraulic cylinder, the hydraulic cylinder drives the pressing wheel to life and fall, the roller is simple in structure and convenient to operate, the pressing wheel achieves no consignment, and the transportation cost is saved.
Owner:金乡县华驰工程机械有限公司

Device and method for drying marine underwater motor

A device for drying a marine underwater motor is installed on a deck of a marine working mother ship provided with a gas storage tank. The underwater motor is provided with a compensator port and a motor cavity oil injection exhaust port. The device for drying the marine underwater motor comprises a main gas pipe, an auxiliary gas tank, an auxiliary gas pipe, a gas heater and a hot gas pipe. One end of the main gas pipe is connected with the output end of the gas storage tank, and the other end of the main gas pipe is connected with the input end of the gas storage tank. The auxiliary gas tank is a sealed metal structural component, and a gas flow control valve is arranged at the output end of the auxiliary gas tank. One end of the auxiliary gas pipe is connected with the output end of the auxiliary gas tank, and the other end of the auxiliary gas pipe is connected with the input end of the gas heater. The gas heater comprises a tube body and electric heating tubes which are arranged inside the tube body. One end of the hot gas pipe is connected with the output end of the gas heater, and the other end of the hot gas pipe is connected with the motor cavity oil injection exhaust port of the underwater motor. The device and method for drying the marine underwater motor have the advantages of being low in maintenance cost, short in working cycle and capable of being used for drying the underwater motor on a marine operation site.
Owner:交通运输部上海打捞局
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