Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год

Применить Всего найдено 21. Отображено 21.
04-04-2023 дата публикации

Track panel detection vehicle, track panel detection device and track panel fine adjustment method

Номер: CN115897311A
Принадлежит:

The track panel detection vehicle comprises a vehicle body, a walking mechanism is arranged at the bottom of the vehicle body, and a track panel detection unit is arranged on the vehicle body; a plurality of prisms are arranged on the vehicle body and are sequentially arranged at intervals in the transverse direction of the vehicle body. In addition, the invention further relates to a track panel detection device which comprises a plurality of track detection trolleys which are sequentially connected in series. At least part of the track detection trolleys adopt the track panel detection vehicle. Correspondingly, the invention further provides a track panel fine adjustment method. A plurality of prisms are arranged on a vehicle body, synchronous tracking measurement of a left track panel and a right track panel can be achieved, space attitude calculation of the track panels and real-time feedback of track panel conditions can be achieved according to measurement results, and therefore an ...

Подробнее
23-06-2023 дата публикации

Construction method of vibration map

Номер: CN116295804A
Принадлежит:

The invention discloses a construction method of a vibration map. The construction method comprises the following steps: dividing urban rail transit into a plurality of sections, and then collecting vibration data of each section; performing 1/3 frequency multiplication analysis on the vibration data to obtain a vibration influence evaluation index VLzmax, and comparing the vibration influence evaluation index VLzmax with a limit value index in a standard to obtain a vibration standard exceeding point; and drawing a vibration influence evaluation index VLzmax in a two-dimensional coordinate formed by the longitudinal mileage of the line and the transverse distance of the vertical line in the forms of a cloud picture, a thermodynamic diagram and the like to form a vibration map. According to the method, the vibration data along the urban rail transit line are collected and drawn in the two-dimensional coordinates formed by the longitudinal mileage of the line and the transverse distance ...

Подробнее
29-08-2023 дата публикации

Method for preparing hierarchical pore metal organic framework material through hydrogen etching

Номер: CN116655935A
Принадлежит:

The invention discloses a method for preparing a hierarchical porous metal organic framework material by hydrogen etching, which is characterized by comprising the following steps: loading a hydrogen activation center on microporous MOFs, carrying out catalytic cracking on hydrogen as an etching agent and the hydrogen activation center loaded on the microporous MOFs as a catalyst to obtain an active hydrogen species, and reducing the microporous MOFs by the active hydrogen species at a certain temperature to obtain the hierarchical porous metal organic framework material. The coordination between metal cations and organic ligands in the microporous MOFs skeleton is destroyed, so that the original skeleton is etched to form mesoporous channels, and the hierarchical porous MOFs are prepared. According to the invention, nontoxic and harmless hydrogen is used as an etching agent, so that the use of toxic and harmful etching agents such as acid, alkali, metal salt, organic solvent and the like ...

Подробнее
09-05-2023 дата публикации

Vehicle-mounted vibration and noise combined disease monitoring system and use method thereof

Номер: CN116080692A
Принадлежит:

The invention provides a vehicle-mounted vibration and noise combined disease monitoring system and a use method thereof, the vehicle-mounted vibration and noise combined disease monitoring system comprises a vehicle-mounted vibration and noise monitoring subsystem and a vehicle rail disease identification analysis subsystem, and through HHT time-frequency analysis and 1/3 frequency multiplication analysis with 1s as a time weighting constant, the vehicle-mounted vibration and noise combined disease is obtained. The method comprises the following steps of: acquiring a statistical curve of indexes changing along with time on a time history of the whole length of a single-train running line, taking a statistical value of data acquired in a plurality of train running courses under the condition that a train and a track are in a normal state as a reference statistical curve, and calling a numerical value on the reference statistical curve as a reference value; and judging whether the train ...

Подробнее
04-04-2023 дата публикации

Track panel fine adjustment detection device and use method thereof

Номер: CN115897312A
Принадлежит:

The invention relates to a track panel fine adjustment detection device which comprises a plurality of groups of fine adjustment detection mechanisms which are sequentially connected in series, each fine adjustment detection mechanism comprises a track panel fine adjustment vehicle and a track detection trolley, and each track panel fine adjustment vehicle comprises a first vehicle body and a track panel fine adjustment unit arranged on the first vehicle body. The track detection trolley comprises a second trolley body and a track panel detection unit arranged on the second trolley body. The first trolley body and the second trolley body are connected, and walking mechanisms are arranged at the bottoms of the first trolley body and the second trolley body. At least part of the walking mechanisms are provided with power driving equipment. In addition, the invention also relates to a use method of the track panel fine adjustment detection device. According to the invention, fine adjustment ...

Подробнее
11-07-2023 дата публикации

Urban rail transit vibration map management system

Номер: CN116414933A
Принадлежит:

The invention discloses an urban rail transit vibration map management system. The system comprises a vibration monitoring system, a vibration calculation system, a data calculation system and a display management system. The vibration monitoring system is used for collecting vibration source intensity data of each section when the train passes; the vibration calculation system is used for receiving the vibration source intensity data collected by the vibration monitoring system and calculating vibration data within a set range of a rail transit transverse distance line center line according to the vibration source intensity data; the data calculation system is used for receiving the vibration data, processing the vibration data to obtain vibration map data required for drawing a vibration map, and storing the vibration map data in a database; and the display management system is used for visually presenting the vibration map data. According to the invention, city vibration monitoring is ...

Подробнее
18-04-2023 дата публикации

Power equipment operation demonstration system and method

Номер: CN115988127A
Принадлежит:

The invention discloses a power equipment operation demonstration system and method, relates to the technical field of power equipment, and can solve the technical problems that the power equipment operation efficiency is low and misoperation cannot be avoided. The system comprises a handheld device, an electronic two-ticket module and a communication module, the electronic two-ticket module is connected with the communication module and is used for signing and issuing two-ticket working contents and sending the two-ticket working contents to the handheld device through the communication module; the handheld device is connected with the communication module and used for obtaining image information of the target operation process according to the two-ticket work content so as to prompt a target work permission person to operate according to the image information, monitoring the actual operation process of the target work permission person and sending out alarm information when the actual ...

Подробнее
21-07-2023 дата публикации

Method for splicing track panel of concrete-filled steel tube sleeper type ballastless track

Номер: CN116463897A
Принадлежит:

The invention discloses a concrete filled steel tube sleeper type ballastless track panel assembling method, which belongs to the technical field of track traffic engineering, and comprises the following steps: marking mounting hole positions on two sides of a sleeper unit, and marking grabbing point positions on steel tubes of the sleeper unit; a sleeper unit placing position is marked on the ground; grabbing a steel pipe of the sleeper unit, and grabbing the sleeper unit to a placing position of the sleeper unit; connecting rods are placed in the longitudinal direction, and the adjacent sleeper units are connected through the connecting rods; and side face track panel connecting rods are installed on the two sides of the sleeper units and inserted into the installing hole sites in the two sides of the sleeper units, and the track panel side face connecting rods connect the sleeper units to form the track panel. According to the track panel assembling device, in the track panel assembling ...

Подробнее
04-04-2023 дата публикации

Prestressed concrete filled steel tube sleeper and preparation method thereof

Номер: CN115897299A
Принадлежит:

The invention discloses a prestressed concrete-filled steel tube sleeper and a preparation method thereof, and belongs to the technical field of ballastless track concrete sleepers, the prestressed concrete-filled steel tube sleeper comprises two sleeper blocks arranged in the transverse direction, and a concrete-filled steel tube member is arranged between the two sleeper blocks; two ends of each concrete filled steel tube member are respectively and fixedly connected with the two sleeper blocks, each prestress connecting piece is fixedly connected with the two sleeper blocks, and at least one prestress connecting piece penetrates through two side wall surfaces of the sleeper along the transverse direction. The invention also discloses a corresponding preparation method. According to the prestressed concrete-filled steel tube sleeper and the preparation method thereof, the prestressed concrete-filled steel tube sleeper has high bending resistance, impact resistance and fatigue resistance ...

Подробнее
12-05-2023 дата публикации

Urban rail transit vibration map construction method

Номер: CN116109786A
Принадлежит:

The invention discloses a construction method of an urban rail transit vibration map, which comprises the following steps of: acquiring vibration data of a train passing through each section by arranging an array grating optical cable, calculating the maximum vibration level and the transmission and distribution of rail transit environment vibration, interpolating with a line map, and fitting a drawn distribution cloud picture, namely the vibration map. The vibration map is simple to construct, and the environment vibration condition when each train passes by can be intuitively shown in real time.

Подробнее
23-06-2023 дата публикации

Vibration isolator, floating slab track and control method of floating slab track

Номер: CN116289348A
Принадлежит:

The invention discloses a vibration isolator, a floating slab track and a control method of the floating slab track. The vibration isolator comprises a stator, a rotor, a spring and a magnet exciting coil, the stator is cylindrical, and a plurality of first magnetic grooves are formed in the inner wall of the stator; the rotor is installed in the stator, and a plurality of second magnetic grooves matched with the first magnetic grooves are formed in the rotor. The springs are arranged at two ends of the rotor; the excitation coil is arranged on the rotor in a sleeving mode so as to apply load to the rotor when powered on. The floating slab track comprises the vibration isolator. Due to the fact that the magnet exciting coil is arranged on the rotor in a sleeved mode, in the application process, if the rotor moves, the positions of the second magnetic grooves and the first magnetic grooves are dislocated, the magnet exciting coil can exert loads opposite to the dislocated direction on the ...

Подробнее
01-08-2023 дата публикации

Power operation site violation evidence obtaining method and device, storage medium and electronic equipment

Номер: CN116523364A
Принадлежит:

The invention discloses an electric power operation site violation evidence obtaining method and device, a storage medium and electronic equipment, and the method comprises the steps: obtaining the position information of an electric power operation site through an evidence obtaining terminal, and transmitting the position information to an inspection cloud platform; the inspection cloud platform receives the position information, obtains standard field operation information matched with the position information from a preset record library according to the position information, and sends the standard field operation information to the evidence obtaining terminal; the evidence obtaining terminal receives the standard field operation information, obtains real-time field operation information of an electric power operation field, identifies the standard field operation information and the real-time field operation information to determine violation information, and generates an inspection ...

Подробнее
07-04-2023 дата публикации

Method and device for constructing energy storage and pumped storage multi-state conversion clearing model in electric power spot market environment

Номер: CN115935650A
Принадлежит:

The embodiment of the invention provides an energy storage and pumped storage multi-state conversion clearing model construction method and device in an electric power spot market environment, and relates to the technical field of new energy. The method comprises the following steps: carrying out energy storage modeling according to actual operation characteristics of an energy storage battery; carrying out pumped storage modeling according to the operation characteristics of the hydropower station; wherein the energy storage modeling comprises the step of constructing energy storage power upper and lower limit constraints and energy storage electric quantity upper and lower limit constraints; the pumped storage modeling comprises construction of output constraint of a hydropower station without adjusting capacity, an output characteristic equation of a hydropower station with adjusting capacity, reservoir capacity upper and lower limit constraint of the hydropower station with adjusting ...

Подробнее
09-06-2023 дата публикации

Paddle retracting device and method for all attitudes of unmanned aerial vehicle

Номер: CN116238737A
Принадлежит:

The embodiment of the invention provides a propeller collecting device and method for all postures of an unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicle collection. The paddle collecting device comprises two first supporting seats, two second supporting seats and a propeller, wherein the two first supporting seats are symmetrically arranged; the two second supporting seats are symmetrically arranged at the two ends of the two first supporting seats respectively; the two first moving platforms are arranged on the two first supporting seats correspondingly, and the two first moving platforms can be close to or away from each other along the second supporting seat in the X-axis direction; and the two second moving platforms are arranged on the two second supporting seats correspondingly, and the two second moving platforms can get close to each other or get away from each other in the Y-axis direction along the first supporting seats. The device can fold ...

Подробнее
02-06-2023 дата публикации

Application of VU0240551 in preparation of medicine for inhibiting or treating prostatic cancer

Номер: CN116196313A
Принадлежит:

The invention relates to an application of VU0240551 in preparation of a medicine for inhibiting or treating prostatic cancer. The application has the beneficial effects that the expression condition of the SLC12A5 protein in the prostate tumor tissue and the para-carcinoma prostate tissue is detected by using an immunohistochemical staining method, the result shows that the SLC12A5 protein is up-regulated in expression in the prostate cancer tissue, is positively correlated with the malignant degree of the prostate cancer and possibly becomes a therapeutic target of the prostate cancer, while the SLC12A5 is intervened by using VU0240551, so that the SLC12A5 protein can be used as a therapeutic target of the prostate cancer. The result shows that the VU0240551 can inhibit proliferation of prostate cancer cells in vitro by targeting SLC12A5, so that the VU0240551 can be used as a new way for inhibiting or treating prostate cancer.

Подробнее
23-06-2023 дата публикации

Urban rail transit planning method

Номер: CN116307379A
Принадлежит:

The invention relates to an urban rail transit planning method, which comprises the following steps of: initially simulating a rail transit line before rail transit construction; constructing a vibration map for the initially planned rail transit line; and fusing the obtained vibration map with a city map, and carrying out vibration environment suitability analysis along the rail transit on the basis so as to guide land planning along the rail transit. According to the method, the vibration map is constructed for the initially planned rail transit line, the vibration data of the whole rail transit line is predicted, the obtained vibration data volume is large and comprehensive, and the accuracy of vibration pollution prediction along the rail transit line can be improved; the constructed vibration map can conveniently perform visual display of vibration data, facilitates vibration environment suitability analysis, improves feasibility of track traffic line land planning, and reduces track ...

Подробнее
09-05-2023 дата публикации

Load resistance subitem coefficient calculation method, storage medium and equipment

Номер: CN116090233A
Принадлежит:

The invention discloses a load resistance subitem coefficient calculation method, a storage medium and equipment, and belongs to the field of ballastless tracks, a structure limit state function is established and simplified, an equivalent resistance attenuation coefficient g * is introduced, an empirical calculation formula of the g * can be obtained by utilizing calculation and simplification of the equivalent resistance attenuation coefficient, and on the basis, the load resistance subitem coefficient is calculated. By introducing a three-order moment reliability theory, parameters such as muR0, sigmaG0, alpha3G0, beta2T0, muRT, sigmaG, alpha3G and beta2T can be quickly obtained, a load and resistance subitem coefficient calculation formula considering resistance performance degradation of the whole life cycle structure is accurately constructed, and a load resistance analysis coefficient is quickly obtained. The method is simple, operation is easy and convenient, the structural resistance ...

Подробнее
05-05-2023 дата публикации

Vibration reduction track structure optimization method

Номер: CN116070327A
Принадлежит:

The invention discloses a vibration reduction track structure optimization method, which comprises the following steps: determining an optimization target of a vibration reduction track structure, establishing a corresponding model for analysis, making a design variable space according to an analysis result, reducing design variables twice to realize model simplification, and performing multi-target optimization through a genetic algorithm. A better solution is selected according to the optimization result, and the optimal design parameters of the track structure can be determined after the better solution is imported into the ballastless track-lower foundation structure coupling dynamics analysis model; the whole optimization process is integrally simplified through reduction of design variables, the optimization effect is good, dependence on complex numerical calculation is not needed, and operation is simple and efficient.

Подробнее
05-05-2023 дата публикации

Floating slab track capable of self-adjusting inherent frequency

Номер: CN116065428A
Принадлежит:

The invention provides a floating slab track capable of performing inherent frequency self-adjustment. The floating slab track comprises a sensing optical cable, a steel rail, a fastener, a roadbed slab, a rigidity non-adjustable vibration isolator, a rigidity adjustable vibration isolator and a single chip microcomputer. The roadbed slab is installed on base concrete, and grooves are formed in the two sides of the roadbed slab and used for containing the rigidity-non-adjustable vibration isolator and the rigidity-adjustable vibration isolator. The vibration isolators are arranged in pairs, a steel rail is installed on the tops of the two vibration isolators through fasteners, and a sensing optical cable and an array grating sensor are further connected to the roadbed slab. The fundamental frequency of the floating slab track can be adjusted according to the vibration response data, collected by the array grating sensor in real time, of the floating slab track bed, the deviation between ...

Подробнее
04-07-2023 дата публикации

Temperature-induced strain response prediction method and device for sleeper

Номер: CN116384239A
Принадлежит:

The invention provides a temperature-induced strain response prediction method and device of a sleeper, and belongs to the technical field of rail traffic engineering monitoring, and the method comprises the steps: obtaining the predicted sleeper temperature data of the sleeper; inputting the historical strain response data and the predicted sleeper temperature data into a pre-trained LSTM regression model to obtain single-step prediction data of temperature-induced strain response; and taking the single-step prediction data as historical strain data, continuously combining with predicted sleeper temperature data for next prediction as input of the LSTM regression model, and performing next prediction of temperature-induced strain response. According to the invention, based on the pre-trained LSTM model, the real-time temperature monitoring data and the historical strain data are taken as input, the real-time strain response is taken as output, the strain data time sequence correlation ...

Подробнее
07-07-2023 дата публикации

Spreading type optical corner reflector

Номер: CN116400443A
Принадлежит:

A scattering type optical corner reflector is characterized in that 8 * 4 triangular pyramid mirrors form a sphere-like structure, N is a positive integer, and the mirror surfaces of the triangular pyramid mirrors are plated with high-reflection films; when incident light irradiates any one or more cube-corner prisms on the optical corner reflector from any angle, the incident light can return along the original path in the direction opposite to the incident direction, erection and adjustment are not needed, and the optical corner reflector is suitable for outdoor use; the broadband or typical laser wavelength narrow-band high-reflective film can reduce the loss of reflected light, improve the intensity of light return signals, and further improve the detection distance.

Подробнее