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55results about How to "There are no security risks" patented technology

Vehicle fork road segment detection device and detection method

The invention relates to the vehicle safety auxiliary driving technology and discloses a vehicle fork road segment detection device and a detection method. The device comprises a vehicle-mounted industrial personal computer, a vehicle speed sensor, a multiline laser radar sensor, a steering wheel steering angle sensor and a display; the multiline laser radar sensor is used for detecting the height of the left road side and the right road side of a road portion in front of a vehicle and the distance between the vehicle and the left road side and the right road side; the steering wheel steering angle sensor is used for detecting the vehicle steering angle in real time; the vehicle-mounted industrial personal computer calculates and draws according to the vehicle steering angle, the vehicle speed, the height of the left road side and the right road side and the distance between the vehicle and the left road side and the right road side to enable a vehicle driving predicted track curve and estimation curves of the left road side and the right road side of the front fork road segment to be obtained; the display is used for displaying the estimation curves of the left road side and the right road side and the vehicle driving predicted track curve in real time. The vehicle fork road segment detection device has the advantages of enabling the estimation curves of the left road side and the right road side and the vehicle driving predicted track curve at the fork road segment to be obtained, reminding a driver to appropriately operate, relieving driver judgment burden and reducing misjudgment possibilities.
Owner:CHANGAN UNIV

Unfired modified high-purity magnesium-aluminum spinel composite bricks and preparation method

The invention belongs to the technical field of high-grade fireproof materials for metallurgy, non-ferrous metal, glass and cement kilns and preparation methods thereof, and in particular relates to unfired modified high-purity magnesium-aluminum spinel composite bricks and a preparation method thereof. The unfired modified high-purity magnesium-aluminum spinel composite bricks take high-purity magnesia powder with the magnesium content of 99 percent as a raw material; a complexed magnesium-aluminum cementing agent and rare-earth oxide are used for modifying the magnesium-aluminum spinel composite bricks for the first time; a preparation process adopts an electric energy low-temperature drying technology to prepare at 200 DEG C. The unfired modified high-purity magnesium-aluminum spinel composite bricks provided by the invention have the advantages of high purity, great density, high strength, good high-temperature thermal shock durability, high corrosion resistance and high molten metal resistance and anti-oxidization capability, no emission of harmful gas and accordance with green refractory standards and the like; the preparation method is simple and high-temperature firing is not needed; the cost is low and no carbon and no chromium are discharged by the raw materials; magnesium-carbon bricks and magnesium-chromium bricks, which are used for a steel ladle, are replaced, and carbon-free and chromium-free emission is realized; the preparation method has no pollution and zero emission; molten steel is cleaned, energy saving and emission reduction are realized and the preparation is safe.
Owner:沈阳罗泰智能系统有限公司

No-firing high purity magnesium calcium brick and preparation method therefor

The invention belongs to the technical field of fireproofing materials for AOD, GOR, VOD and LF-VD refining furnace, specifically relates to a no-firing high purity magnesium calcium brick and the preparation method therefor. The brick consists of aggregate material, powder material and binder. The raw material of the aggregate material comprises the following compositions in parts by weight: 5 to 10 parts of high purity fused magnesite (>= 98% of magnesium oxide, with a critical particle size between 0.1 mm to 1 mm), 20 to 35 parts of sintered magnesite (>= 99% of magnesium oxide, with a critical particle size of 7 mm), 40 to 55 parts of calcium magnesite (the total content of magnesium oxide and calcium oxide is 98.5%, 40% to 45% of magnesium oxide and 50% to 55% of calcium oxide, with a critical particle size of 7 mm). The raw material of the powdered material comprises the following compositions in parts by weight: 15 to 20 parts of high purity fused magnesite (>= 98% of magnesium, with a particle size between 300 to 350 meshes), 1 to 4 parts of ceramic agglutinant (nanoscale particle size), 0.5 to 0.9 part of rare earth oxide (2000 to 3500 meshes of particle size). The binder comprises 0.5 to 1 part of solid powder binder and 1 to 3 parts of liquid binder. The no-firing high purity magnesium calcium brick and the preparation method therefor have the advantages of high purity, high intensity, good high temperature thermal shock resistance, strong corrosion resistance, molten metal resistance and oxidation resistance, no emissions of harmful gases, no need of high-temperature firing, low cost, and the like.
Owner:孙光 +1

Unburned magnesia-carbon brick and preparation method thereof

The invention belongs to the technical field of high-duty refractory for electric furnace and converter linings and ladle linings and in particular relates to an unburned magnesia-carbon brick and a preparation method thereof. The unburned magnesia-carbon brick is characterized by comprising the following components in parts by weight: 80-90 parts of fused magnesite (more than or equal to 97% of MgO, the granularity of 0.1-5mm and the moisture content of less than or equal to 4%), 12-16 parts of graphite (more than or equal to 98% of C, the granularity of less than or equal to 400 meshes, and the moisture content of less than or equal to 0.15%), 0.5-1.5 parts of metal aluminum powder (more than or equal to 98% of Al and the granularity of less than or equal to 400 meshes), 1-3 parts of an aluminum magnesium alloy (more than or equal to 98% of Al+Mg and the granularity of less than or equal to 400 meshes), 0.2-0.8 part of boron carbide (more than or equal to 99% of BC4 and the granularity of 200-325 meshes), 1-2.5 parts of high temperature pitch (softening temperature of more than or equal to 150 DEG C, more than or equal to 50% of residual carbon and the granularity of 100-200 meshes), 0.2-0.5 part of a rare earth oxide (the granularity of 300-350 meshes), 3-5 parts of ceramic bond, 3-4 parts of a complex magnesium-aluminum cementing agent and 1-3 parts of water. The unburned magnesia-carbon brick disclosed by the invention has the advantages of simple and safe preparation method, low cost, no need of high-temperature firing, high density, high strength, high corrosion resistance, molten metal resistance, high oxidation resistance, energy conservation and emission reduction and the like.
Owner:孙光 +3

Automatic assembly equipment for single-slit self-lubricating oscillating bearing

ActiveCN103233985AImprove assembly efficiencyConsistent assembly qualityBearing componentsManipulatorEngineering
The invention discloses automatic assembly equipment for a single-slit self-lubricating oscillating bearing. The automatic assembly equipment comprises a rack and a workbench arranged on the rack, wherein a clamping device and a manipulator are arranged on the workbench; the clamping device comprises two clamping mechanisms arranged symmetrically; the clamping mechanisms comprise bases and clamping arms; the clamping arms are rotationally connected with the bases through rotating shafts; platforms for placing outer rings are arranged at clamping parts on the bases, corresponding to the clamping arms; the clamping arms of the two clamping mechanisms are respectively driven to clamp the outer ring end faces by corresponding clamping oil cylinders; the bases of the two clamping mechanisms are respectively driven to move and open the outer rings by corresponding driving mechanisms; and an inner ring conveying belt and a finished product conveying belt are arranged on one side of the manipulator. The outer rings are automatically clamped and opened by the clamping device, so that the outer ring end faces are free from burrs, and a potential safety hazard does not exist; and the inner rings and assembled finished products are transmitted by the manipulator, so that the assembly efficiency is improved effectively, and the consistency of the assembly quality is good.
Owner:FUJIAN LONGXI BEARING (GROUP) CO LTD

Unfired magnesite-chrome bricks used for metallurgical non-ferrous smelting furnaces, and preparation method thereof

ActiveCN107043265AHigh bonding strengthGood load softening temperatureBrickOxidation resistant
The invention discloses a high-grade refractory material used for metallurgical non-ferrous smelting furnaces, and a preparation method thereof, and more specifically relates to unfired magnesite-chrome bricks used for metallurgical non-ferrous smelting furnaces. The unfired magnesite-chrome bricks comprise a skeletal material, a powder material, and a binding agent; the skeletal material is composed of, by weight, 35 to 45 parts of high purity magnesia (MgO>=97.5%, and particle size ranges from 7 to 90 meshes), and 15 to 25 parts of fused magnesite chrome sinter (MgO>=69%, Cr2O3>=20%, and particle size ranges from 7 to 90 meshes); the powder material is composed of, by weight, 30 to 35 parts of chrome iron ore concentrate (Cr2O3 content ranges from 47 to 60%, Fe2O3 content ranges from 15 to 27%, MgO content ranges from 9.0 to 13%, and particle size ranges from 300 to 350 meshes), 2 to 4 parts of a cold sintering agent (nano-grade particle size), 0.3 to 0.6 part of a rare earth oxide (particle size ranges from 2000 to 3500 meshes), 2 to 4 parts of activated aluminium oxide micropowder (particle size ranges from 2000 to 3500 meshes), 2 to 5 parts of the binding agent, and 1 to 3 parts of water. The high-grade refractory material is high in purity, density, strength, high temperature thermal shock resistance, corrosion resistance, molten metal resistance, and antioxidant ability, and low in cost; no high temperature sinterning is needed; energy conservation and emission reduction are realized; and the unfired magnesite-chrome bricks are safe to prepare.
Owner:孙光 +1

Control system for preventing driver from stepping on automobile accelerator by mistake and control method thereof

The invention discloses a novel intelligent device for preventing a driver from stepping on an automobile accelerator by mistake. An acceleration sensor and a gyroscope which are connected with a controller are adopted to monitor the acceleration and running state of an automobile when the driver steps on the accelerator, collected data is compared with preset threshold values, data about the deflection direction and degree of the gyroscope are compared with preset threshold values, when two conditions are met at the same time, it is determined that the driver steps on the accelerator by mistake, a gasoline supply system ECU stops supplying gasoline, an automobile emergency braking module conducts emergency braking, and the driving safety of the automobile is improved; the method is easy to control and operate, high in measurement precision, not easy to affect by the external environment and capable of not causing hidden safety problems; the device for preventing the driver from stepping on the automobile accelerator by mistake is simple, low in investment cost, suitable for large-scale popularization and application, a detection method of the device has the advantages of being intelligent, automated and high in reliability, and the occurrence of traffic accidents can be effectively reduced.
Owner:CHANGAN UNIV

Storage device of mold steel

The invention relates to the technical field of storage devices, and specifically discloses a storage device of mold steel. The storage device comprises a storage frame and further comprises a supporting frame located on one side of the storage frame. Multiple rollers are connected to the supporting frame in a rotating manner. The multiple rollers are horizontally arranged. The adjacent rollers are parallel to one another. A containing platform and a pushing unit are arranged on the storage frame. Multiple balls are connected to the containing platform in a rotating manner. The upper surfacesof the rollers and the top ends of the balls are on the same plane. The pushing unit comprises movable frames and grabbing assemblies. The movable frames are connected to the storage frame in a sliding manner. The grabbing assemblies are fixedly connected to the end portions of the movable frames. The grabbing assemblies are located above the rollers. The pushing unit is used for pushing the steelon the rollers onto the containing platform. The storage device is used for solving the problems that in the prior art, due to the fact that the steel is manually carried onto the storage frame and is manually arranged, the labor intensity is high and the problem that potential safety hazards exist in manual steel carrying and movement.
Owner:重庆禾秀丰电子有限公司

Semi-outdoor colored terrace construction method

The invention provides a semi-outdoor colored terrace construction method. The method includes the steps of S1, base layer treatment: firstly, polishing the ground, then cutting shallow seams among all original floor tiles, and finally filling the cut seams with a polyurethane material; S2, polyurethane bottom layer construction: spreading trowel polyurethane mortar which is evenly stirred on the concrete ground; S3, polyurethane middle coating construction: blade-coating waterborne polyurethane mortar on a polyurethane bottom layer by using a straight trowel; S4, polyurethane self-leveling surface layer construction: after the waterborne polyurethane mortar ground is laid, coating the surface with super-wear-resistant colored polyurethane finish-coat paint; S5, sealing construction of a super-wear-resistant polyurethane surface coating: after construction of the polyurethane self-leveling surface layer is completed, carrying out secondary polishing, after polishing is completed, integrally sealing a solvent-free epoxy primer, and synchronously carrying out super-wear-resistant polyurethane surface coating; and S6, completion maintenance. The problems of separation, peeling, fading and the like after a colored polyurethane terrace is constructed can be solved, the attractiveness is high, and construction is easy and convenient.
Owner:ZHEJIANG YIJIAN CONSTR GROUP

Fabricated tensioning structure of wallboard and installation method thereof

The invention discloses a fabricated tensioning structure of a wallboard and an installation method thereof. The fabricated tensioning structure of the wallboard comprises the wallboard, a plurality of fixing connecting pieces, an upper fixing profile arranged transversely, a lower fixing profile arranged parallel to the upper fixing profile at an interval, and a plurality of tensioning vertical rods arranged at intervals; one end of each tensioning vertical rod is connected with the upper fixing profile, the other end of each tensioning vertical rod is connected with the lower fixing profile,and the multiple fixing connecting pieces are fixed to the tensioning vertical rods at intervals in the length direction of the tensioning vertical rods; and the wallboard comprises a plurality of composition boards, and each composition board is installed on the corresponding fixing connecting pieces. The composition boards, the fixing connecting pieces, the upper fixing profile, the lower fixing profile and the tensioning vertical rods in the fabricated tensioning structure of the wallboard are all in standardized design, the standardized and modularized factory production of installation components can be realized, on-site efficient fabricated construction is realized, the working efficiency can be improved, and the engineering cost can be reduced; and besides, lossless disassembly foruse can be achieved, material resources are saved, and energy conservation and environment protection are achieved.
Owner:SHENZHEN RUIHE CONSTR DECORATION

Touchable electronic device and control method thereof

The invention discloses a touchable electronic device and a control method thereof, the touchable electronic device comprises a main body, the main body is provided with at least one brightness detection cavity, at least part of the cavity wall of each brightness detection cavity is a water-induced light transmittance change cavity wall, and the water-induced light transmittance change cavity wall comprises a transparent layer and a water-induced light transmittance change layer; the water-induced light transmittance change layer is arranged on one side, facing the interior of the brightness detection cavity, of the transparent layer; a through hole is formed in the cavity wall of the brightness detection cavity; and the photosensitive elements are arranged in the brightness detection cavities. According to the scheme, external discharge current does not need to be provided, so that the safety is high, and the problem that potential safety hazards are caused to a user due to the fact that the current is externally discharged to the outside does not exist. Besides, due to the fact that the photoelectric detection mode is adopted in the scheme, the photosensitive element is located in the brightness detection cavity and can be protected by the brightness detection cavity, faults are not prone to occurring, and the use reliability and the service life are guaranteed.
Owner:BOE TECH GRP CO LTD +1

Automatic control circuit for storage battery charging

The invention discloses an automatic control circuit for storage battery charging. The automatic control circuit comprises a high-voltage relay, a first low-voltage relay, a second low-voltage relay,a key control module and a main control module, wherein the main control module disconnects the high-voltage relay between a charger and a power frequency signal and a first low-voltage relay connected between the charger and the storage battery and connects the second low-voltage relay connected between the storage battery and the output to enable the storage battery to discharge, when key control signal is used for controlling a storage battery to discharge, the main control module disconnects the second low-voltage relay when the key control signal is used for controlling the storage battery to charge, and connects the high-voltage relay and the first low-voltage relay for charging when the voltage value of the storage battery is lower than a preset discharging voltage value, and disconnects the high-voltage relay and the first low-voltage relay to terminate the charging when the voltage value reaches a preset charging voltage value. According to the invention, the safety and stability are achieved, the control is standard, the operation is simple, the working state can be switched by one key, and the voltage of the storage battery can be effectively monitored.
Owner:HUAZHONG UNIV OF SCI & TECH

A kind of non-fired magnesia-chrome brick for metallurgy and non-ferrous smelting furnace and its preparation method

ActiveCN107043265BHigh bonding strengthGood load softening temperatureBrickOxidation resistant
The invention belongs to the technical field of high-grade refractories for metallurgy and nonferrous smelting furnaces and their preparation, and in particular relates to an unfired magnesia-chrome brick for metallurgy and nonferrous smelting furnaces. An unfired magnesia-chrome brick for metallurgy and non-ferrous smelting furnaces, including aggregate, powder and binder, the raw materials of the aggregate are composed as follows in parts by weight: high-purity magnesia (MgO≥97.5%, particle size 7- 90 mesh) 35‑45 parts, fused magnesia chrome sand (MgO≥69%, Cr 2 o 3 ≥20%, particle size 7-90 mesh) 15-25 parts; the raw materials of the powder are composed as follows in parts by weight: ferrochrome concentrate (Cr 2 o 3 The content is 47%‑60%, Fe 2 o 3 content of 15%-27%, MgO content of 9.0%-13%, particle size 300-350 mesh) 30-35 parts, cold sintering agent (particle size nanoscale) 2-4 parts, rare earth oxide (particle size 2000-3500 mesh ) 0.3-0.6 parts, activated alumina micropowder (particle size 2000-3500 mesh) 2-4 parts; binder 2-5 parts, water 1-3 parts. The invention has the advantages of high purity, high density, high strength, good high-temperature thermal shock stability, strong corrosion resistance, strong resistance to molten metal and oxidation, no need for high-temperature firing, low cost, energy saving and emission reduction, and safe preparation.
Owner:孙光 +1

Method of Releasing the Stress of the Triangular Suspended Roof by Blasting the Island Body

The invention discloses a method for blasting an island body to release the stress of a triangular suspended roof region. The method comprises the following blasting steps that firstly, drilling holesare distributed according to the area of the triangular suspended roof region, and the drilling holes at least comprise main drilling holes arranged in the three angular positions and the central position of the triangular suspended roof region respectively, and a plurality of adjusting drilling holes arranged in other positions in the triangular suspended roof region; secondly, carbon dioxide blasters are installed inside the main drilling holes, and the adjusting drilling holes are vacant inside to serve as free surface vacant holes; and finally, all the carbon dioxide blasters inside the main drilling holes are initiated. The method for blasting the island body to release the stress of the triangular suspended roof region is safe and reliable, is not influenced by gas accumulation in agoaf, and is particularly suitable for the application to a highly gassy mine, the blasting fragment size is not limited, construction is simple and convenient, the area of the triangular suspended roof region can be reduced effectively in time, stress concentration in the goaf is weakened or eliminated, a suspended roof in the goaf is timely stripped and collapsed, the goaf at the middle upper part is filled, and safe and smooth production of a working face is guaranteed.
Owner:CENT SOUTH UNIV

Improved circular ring turbine

The invention discloses an improved circular ring turbine. The improved circular ring turbine comprises an outer shell assembly and a rotor assembly, wherein the outer shell assembly has a rotating cavity, the rotor assembly is arranged in the rotating cavity, the rotor assembly comprises a rotating shaft, a plurality of rotating pieces, two clamping pieces and a supporting circular pipe, the rotating shaft is rotatably connected with the outer shell assembly, the rotating pieces and the two clamping pieces are arranged on the rotating shaft in a sleeving mode, a clamping gap is formed betweenthe two clamping pieces, the plurality of rotating pieces are arranged in a stacked mode and arranged in the clamping gap, the rotating shaft is sleeved with the supporting circular pipe, and both ends of the supporting circular pipe are connected with clamping grooves formed in the two clamping pieces in a clamped mode respectively; and each rotating piece is a circular ring, a plurality of bulges are arranged on one side of each rotating piece, the plurality of bulges are uniformly arranged in the circumferential direction of each rotating piece, each bulge is close to the inner ring of each circular ring, an airflow pipeline is formed between every two adjacent bulges, and the thickness of the bulges is equal to a gap between every two adjacent rotating pieces. The improved circular ring turbine solves the problems that airflow kinetic energy cannot be fully utilized and potential safety hazards are caused by rotor exposure in the prior art.
Owner:YANGTZE UNIVERSITY

Home location short number service system, platform and implementation method

The invention relates to a system for home short number service, comprising: a home service platform for responding to a short number query request and returning a real number corresponding to the short number; an intelligent network platform for communicating with a visited mobile service exchange center and a home site Business platform connection. A method for realizing a home short number service, comprising: step 1: sending a message to an intelligent network platform for a visited mobile service switching center to trigger a home short number service; step 2: determining whether the dialed number is preset by the intelligent network platform If the short number is, then execute step 3, otherwise carry out routing connection according to the dialed number; Step 3 is that the intelligent network platform inquires about the real number corresponding to the dialed number and sends it to the visiting mobile service switching center; Step 4 is the visiting mobile service The switching center performs routing and connection according to the real number. The invention enables the user to use the home short number service subscribed in the home place when performing international roaming, and is easy to implement and maintain.
Owner:CHINA MOBILE COMM GRP CO LTD
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