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55results about How to "Not easy to reverse" patented technology

Preparation method of titanium alloy spring made of wire with specially-shaped section

The invention relates to a preparation method of a titanium alloy spring made of a wire with a specially-shaped section and belongs to the technical field of springs. The spring is formed by winding of the titanium alloy wire with the specially-shaped section; the titanium alloy wire comprises the components in percentage by mass as follows: 2-4 of Al, 6-10 of V, 4-8 of Cr, 2-6 of Mo, 2-6 of Zr, 0.1-0.3 of Fe, 0.03-0.15 of Si and the balance of Ti. The section of the titanium alloy spring wire can be rectangular, square, orthohexagonal or oval. The titanium alloy wire wound into the spring is prepared with forging, pressing and hot rolling technologies, the wire is subjected to solution treatment before being wound into the spring, and a finished product of the spring is subjected to aging and strengthening treatment. A titanium alloy which is used for preparing the spring can play a weight reduction role, and meanwhile, the titanium alloy has the good corrosion resistance and the long fatigue life in an ocean environment. With the adoption of the wire with the specially-shaped section, the section area can be increased under the condition that specifications of wires are similar, so that the rigidity of the spring is improved, and the usage requirement of the titanium alloy spring under the high workload can be met.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Sliding-friction pendulum combined shock-insulation layer with ultra-large bottom surface

ActiveCN106400972ALarge spanMeet the needs of horizontal deformationProtective buildings/sheltersShock proofingInsulation layerPendulum
The invention discloses a sliding-friction pendulum combined shock-insulation layer with an ultra-large bottom surface. The combined shock-insulation layer comprises an upper spherical shell layer, a lower spherical shell layer and sliding frames. Four arc-shaped spherical faces are arranged on the upper surfaces of the lower spherical shell layer. Four arc-shaped spherical faces are arranged on the lower surface of the upper spherical shell layer. Each sliding frame is composed of a plurality of sliding blocks, upper connecting components, lower connecting components, connecting beams and sliding frame columns, wherein the sliding frame columns are connected between the upper connecting components and the lower connecting components, and the lateral portions of the upper connecting components and the lateral portions of the lower connecting components are connected with the connecting beams. The upper end surfaces of the upper connecting components and the lower end surfaces of the lower connecting components are welded to the sliding blocks. The sliding frames are in overlap joint with the arc-shaped spherical faces of the upper spherical shell layer and the arc-shaped spherical faces of the lower spherical shell layer through the sliding blocks. According to the sliding-friction pendulum combined shock-insulation layer with the ultra-large bottom surface, the sliding frames are formed through connection of the sliding blocks, and the integral shock-insulation layer is formed by the sliding frames, the upper spherical shell layer and the lower spherical shell layer; and the span of the shock-insulation layer is quite large, the allowable deformation, in the horizontal direction, of the shock-insulation layer is far larger than that of a shock-insulation support, and the requirement for horizontal deformation of the shock-insulation layer under an extremely-powerful earthquake can be completely met.
Owner:HARBIN INST OF TECH

65nm technology-based super-steep reverse-doping radiation-proof MOS field-effect tube

ActiveCN105514169AImprove radiation resistanceDoes not affect integrationSemiconductor/solid-state device detailsSolid-state devicesSubthreshold oscillationsThreshold voltage
The invention discloses a 65nm technology-based super-steep reverse-doping radiation-proof MOS field-effect tube, mainly solving the problems of increased OFF leakage current, threshold voltage drift and subthreshold oscillation amplitude degradation of a conventional 65nm MOS field-effect tube under a total dose radiation environment. The MOS field-effect tube comprises a P-type substrate (1) and an epitaxial layer (2) located on the substrate, wherein an isolation groove (3) is formed around a place above the epitaxial layer, a grid electrode (4) is arranged at the middle above the epitaxial layer, a source region (5) and a drain region (6) are arranged in the epitaxial layer between two side boundaries of the grid electrode and the inner boundary of the isolation groove, light-doping source-drain regions (7) are arranged in the epitaxial layer below the two side boundaries of the grid electrode, a channel is formed in an area between the two light-doping source-drain regions and right below the grid electrode, and a heavy-doping super-steep reverse-doping region (8) is arranged below the channel between the two light-doping source-drain regions. The 65nm technology-based super-steep reverse-doping radiation-proof MOS field-effect tube improves the total dose irradiation resistance of a device, and can be used for the preparation of large scale integrated circuits.
Owner:XIDIAN UNIV

Steel-bar arc-delivering straightening hoop bending machine

The invention relates to a steel-bar arc-delivering straightening hoop bending machine. The steel-bar arc-delivering straightening hoop bending machine is characterized by sequentially comprising a feeding port, a delivering assembly, a guiding assembly, a measuring assembly, a straightening assembly, a material-guiding guide tube, a shearing assembly, a bending assembly and a reverse delivering assembly, wherein the delivering assembly is used for clamping a steel bar and delivers the steel bar backwards, the guiding assembly is used for controlling and guiding the delivering path of the steel bar and achieving arc-delivering through change of displacement of each wheel set in the perpendicular direction, and the measuring assembly is used for measuring the current delivering length of the steel bar. The delivering assembly comprises a pair of delivering wheels, and the two delivering wheels are located on the upper side of the middle axis of the feeding port and the lower side of the middle axis of the feeding port respectively and are symmetrically distributed. The measuring assembly comprises a set of metering wheels which are vertically distributed. The straightening assembly comprises a perpendicular straightening assembly and a horizontal straightening assembly, wherein the horizontal straightening assembly is composed of two sets of plane straightening wheels. The steel-bar arc-delivering straightening hoop bending machine guarantees the quality of the straightened steel bar, improves straightening efficiency, reduces production cost, and has positive significance in straightening and bending of the steel bar.
Owner:姜勇

Swinging type shock insulation layer capable of achieving overall sliding friction of bottom surface

The invention discloses a swinging type shock insulation layer capable of achieving overall sliding friction of the bottom surface. The shock insulation layer comprises a bottom surface spherical shell and an upper-portion spherical-surface framework, wherein the lower side of the bottom surface spherical shell and a concrete foundation or a lower structure are cast integrally, and the upper surface is a large-span large-curvature-radius arc spherical surface; the upper-portion spherical-surface framework is formed by connecting a plurality of sliding blocks, connecting beams, load bearing pillars and connecting components, the lower portions of the connecting components are welded to the sliding blocks, the sides of the connecting components are connected with the connecting beams, the upper portions of the connecting components are connected with an upper structure through the load bearing pillars, the sliding blocks are in lap-joint with the upper surface of the bottom surface spherical shell, the lower surfaces of the sliding blocks keep consistent with corresponding positions of the arc spherical surface, and point-contact is avoided. The sliding spherical-surface framework is formed through connection between the sliding blocks and forms the swinging type shock insulation layer capable of achieving overall sliding friction of the bottom surface together with the bottom surface spherical shell. The bottom surface spherical shell has a large span, the allowed deformation in the horizontal direction is far higher than that of a shock insulation support, and the horizontal deformation of the shock insulation layer under super-large shock can be completely met.
Owner:HARBIN INST OF TECH

Earth pressure cell embedding device and earth pressure cell embedding method adopting device

The invention provides an earth pressure cell embedding device and an earth pressure cell embedding method adopting the device. The device comprises an embedded cylinder, an embedded rod assembly and a lifting rope. The embedded cylinder comprises an earth placing cylinder, a bulldozing mechanism and an earth supporting mechanism, the lower end of the earth placing cylinder is provided with an opening, a top wall through hole is formed in the center of the top wall of the earth placing cylinder, a lifting part is arranged on the outer side of the top wall of the earth placing cylinder, and a guide wire through hole is formed in the top wall of the earth placing cylinder; the bulldozing mechanism comprises a bulldozing plate and a bulldozing rod vertically arranged in the center of the bulldozing plate; the bulldozing mechanism is nested in the earth placing cylinder, the bulldozing plate is in clearance fit with the earth placing cylinder, and a lower guide wire through hole corresponding to the upper guide wire through hole is formed in the bulldozing plate; the bulldozing rod penetrates through and is in clearance fit with the top wall through hole, and the earth supporting mechanism is stuck at the opening edge of the lower end of the earth placing cylinder; and the embedded rod assembly is composed of a plurality of connecting rods capable of detachably fixing and connecting in series, the lower end of the embedded rod assembly is detachably and fixedly connected with the bulldozing rod, and the lower end of the lifting rope is connected with the lifting part. The earth pressure cell embedding device is ingenious in design; According to the earth pressure cell embedding method adopting the device, distortion of test results is avoided, and materials are saved.
Owner:WUHAN UNIV

Target degradation Bcr-Abl protein reagent and application of target degradation Bcr-Abl protein reagent in preparing Philadelphia chromosome positive tumor treatment medicine

InactiveCN102895221AInhibits growth and induces apoptosisRapid responseOrganic active ingredientsAntineoplastic agentsPhiladelphia Chromosome PositiveTumor therapy
The invention discloses an oridonin which can be used for treating Philadelphia chromosome positive tumor through degradation of Bcr-Abl fusion protein and relates to an application of the oridonin in preparing a Philadelphia chromosome positive tumor treatment medicine. A large number of studies show that the oridonin is capable of activating Bcr-Abl specific ubiquitination degradation ways and rapidly and efficiently degrading Bcr-Abl oncoprotein, and thereby Philadelphia chromosome positive tumor cells are subjected to remarkable growth inhibition and irreversible cell apoptosis. In a mouse body, the oridonin also can degrade the Bcr-Abl protein and remarkably inhibit growth of the Philadelphia chromosome positive tumor. The oridonin is mainly derived from rabdosia rubescens which is a traditional Chinese medicine and the oridonin has slight toxic effect on human body and is easy to prepare and high in applicability. Besides, the action mechanism of the oridonin is completely different from STI-571 (gleevec) which is a first-line medicine used for leukemia clinical treatment presently, and thereby the oridonin can be used as a potential medicine for treating STI-571 tolerant Philadelphia chromosome positive tumor.
Owner:SUN YAT SEN UNIV

Preparation method of special-shaped section wire titanium alloy spring

The invention relates to a preparation method of a titanium alloy spring made of a wire with a specially-shaped section and belongs to the technical field of springs. The spring is formed by winding of the titanium alloy wire with the specially-shaped section; the titanium alloy wire comprises the components in percentage by mass as follows: 2-4 of Al, 6-10 of V, 4-8 of Cr, 2-6 of Mo, 2-6 of Zr, 0.1-0.3 of Fe, 0.03-0.15 of Si and the balance of Ti. The section of the titanium alloy spring wire can be rectangular, square, orthohexagonal or oval. The titanium alloy wire wound into the spring is prepared with forging, pressing and hot rolling technologies, the wire is subjected to solution treatment before being wound into the spring, and a finished product of the spring is subjected to aging and strengthening treatment. A titanium alloy which is used for preparing the spring can play a weight reduction role, and meanwhile, the titanium alloy has the good corrosion resistance and the long fatigue life in an ocean environment. With the adoption of the wire with the specially-shaped section, the section area can be increased under the condition that specifications of wires are similar, so that the rigidity of the spring is improved, and the usage requirement of the titanium alloy spring under the high workload can be met.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Sliding friction pendulum combined shock-isolation layer with super large bottom surface

ActiveCN106400972BLarge spanMeet the needs of horizontal deformationProtective buildings/sheltersShock proofingInsulation layerIsolation layer
The invention discloses a sliding-friction pendulum combined shock-insulation layer with an ultra-large bottom surface. The combined shock-insulation layer comprises an upper spherical shell layer, a lower spherical shell layer and sliding frames. Four arc-shaped spherical faces are arranged on the upper surfaces of the lower spherical shell layer. Four arc-shaped spherical faces are arranged on the lower surface of the upper spherical shell layer. Each sliding frame is composed of a plurality of sliding blocks, upper connecting components, lower connecting components, connecting beams and sliding frame columns, wherein the sliding frame columns are connected between the upper connecting components and the lower connecting components, and the lateral portions of the upper connecting components and the lateral portions of the lower connecting components are connected with the connecting beams. The upper end surfaces of the upper connecting components and the lower end surfaces of the lower connecting components are welded to the sliding blocks. The sliding frames are in overlap joint with the arc-shaped spherical faces of the upper spherical shell layer and the arc-shaped spherical faces of the lower spherical shell layer through the sliding blocks. According to the sliding-friction pendulum combined shock-insulation layer with the ultra-large bottom surface, the sliding frames are formed through connection of the sliding blocks, and the integral shock-insulation layer is formed by the sliding frames, the upper spherical shell layer and the lower spherical shell layer; and the span of the shock-insulation layer is quite large, the allowable deformation, in the horizontal direction, of the shock-insulation layer is far larger than that of a shock-insulation support, and the requirement for horizontal deformation of the shock-insulation layer under an extremely-powerful earthquake can be completely met.
Owner:HARBIN INST OF TECH

Shower room fixedly connecting structure and shower room partition

The invention discloses a shower room fixedly connecting structure and a shower room partition, and relates to the technical field of pull rod fixing. The shower room fixedly connecting structure comprises a connecting seat and a connecting pressing plate; the connecting seat is used for connecting with the wall surface; the connecting pressing plate is convexly provided with a pressing part, is connected with the connecting seat and can enclose an accommodating opening with the connecting seat; the connecting pressing plate can also rotate relative to the connecting seat so as to abut againstthe connecting seat and drive the pressing part to turn to the accommodating opening; in the process that the pressing part turns to a critical point, the pressing part can gradually increase the acting force applied to the pull rod, after the pressing part crosses the critical point, the connecting pressing plate can be abutted against the connecting seat, and the pressing part can reduce the acting force applied to the pull rod so as to keep the state that the connecting pressing plate abuts against the connecting seat and clamp the pull rod together with the connecting seat. The shower room fixedly connecting structure and the shower room partition are fast installation, and does not easily leave traces on the pull rod during adjusting and does not easily generate abnormal sound.
Owner:GUANGZHOU OUPAI SHOWER EQUIP

Three-shaft shredding machine

The invention discloses a three-shaft shredding machine which comprises a box body, a first cutter shaft, a second cutter shaft and a third cutter shaft; a shredding cavity is formed in the box body, and a feeding opening communicating with the shredding cavity is formed in the top of the box body; the first cutter shaft is rotatably arranged in the shredding cavity of the box body around a first axis, and a first blade is arranged on the first cutter shaft; the second cutter shaft and the third cutter shaft are rotatably arranged in the shredding cavity of the box body around a second axis and a third axis correspondingly, the second axis and the third axis are located below the two sides of the first axis respectively, the second axis and the third axis are parallel to the first axis respectively, and a second blade and a third blade are arranged on the second cutter shaft and the third cutter shaft correspondingly; and the second blade and the third blade are respectively staggered and matched with the first blade, and the second blade and the third blade are mutually staggered and matched with each other. According to the three-shaft shredding machine, materials are shredded three times after entering the shredding cavity from the feeding opening, and therefore the shredding efficiency is higher compared with other three-shaft shredding machines.
Owner:昆山格锐精密机械有限公司
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