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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

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Мониторинг СМИ

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

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 14. Отображено 14.
18-08-2023 дата публикации

Construction method, system and device of robot navigation map and medium

Номер: CN116608850A
Автор: ZHAN JIAWANG, ZHU ZHIYUAN, HUANG ZHIYONG, JIANG FENG, ZHA CHANGHAI, CHEN PENG, XU TIAN
Принадлежит:

The invention relates to a robot navigation map construction method and system, and the method comprises the steps: obtaining a laser point cloud, an RGB image and an RGBD dense point cloud, carrying out the processing of the laser point cloud through a mileage calculation method, obtaining a transformation matrix, segmenting the RGB image through a neural network, and obtaining a semantic segmentation image; projecting the laser point cloud into the semantic segmentation image according to internal and external parameters of the camera to enable the laser point cloud to obtain semantic information, and aligning the point cloud with the semantic information with the 3D sub-map according to the transformation matrix; carrying out dimension reduction processing on the 3D sub-map with semantic information in the Z direction, fusing the occupation probability, the semantics and the dense point cloud information in the grids in the Z direction into the occupation probability, the semantics and ...

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Номер записи: 1
02-06-2023 дата публикации

Rock burst active prevention and control system

Номер: CN116201574A
Автор: HU JIE, ZHAN JIAWANG, LI ZHE, HE MANCHAO, TAO ZHIGANG, SONG WEI
Принадлежит:

The invention provides a rockburst active prevention and control system which comprises an NPR reinforcing mesh formed by transversely and longitudinally staggering NPR reinforcing steel bars, and the NPR reinforcing mesh is tightly attached to a tunnel surrounding rock; the extending ends of the NPR anchor rods or the NPR anchor cables penetrate out of meshes of the NPR reinforcing mesh; the NPR steel protection plate is provided with a plurality of center penetrating holes, the center penetrating holes are used for allowing the extending ends of the NPR anchor rods or the NPR anchor cables to penetrate through, and the NPR steel protection plate is tightly pressed on the NPR reinforcing mesh through anchorage devices; the NPR anchor rods or the NPR anchor cables on the same radial face of the tunnel are connected to the same NPR steel protection plate. The embedded bars are connected between the extending ends of any two adjacent NPR anchor rods or NPR anchor cables; and the NPR steel ...

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Номер записи: 2
04-08-2023 дата публикации

Rock burst control type TBM system and construction method

Номер: CN116537803A
Автор: HE MANCHAO, HU JIE, YANG JUN, ZHAN JIAWANG, LIU SHUANGZHONG, XU YANPING, LIU GUOPING
Принадлежит:

The invention relates to the technical field of tunnel construction, in particular to a rockburst control type TBM system and a construction method. A rockburst control type TBM system comprises a main beam, a cutterhead, a step shield system, a propelling system and a supporting system, wherein the cutterhead, the step shield system, the propelling system and the supporting system are arranged on the main beam. The cutterhead is arranged at the front end of the main beam in a center rotating mode and used for crushing tunnel face surrounding rock, and the cutterhead and the main beam are coaxially arranged. The step shield system comprises a first-stage shield and a second-stage shield and is used for supporting surrounding rock, the first-stage shield is arranged on the rear side of the cutterhead and fixedly arranged on the periphery of the main beam in a sleeving mode, and the second-stage shield is arranged on the periphery of the main beam in a radial telescopic mode; and the circumferential ...

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Номер записи: 3
27-05-2015 дата публикации

Railroad bridge substructure health status quantitative evaluation method

Номер: CN104655385A
Автор: ZHAN JIAWANG, ZHANG NAN, XIA HE, HU SUOTING, CAI CHAOXUN
Принадлежит:

The invention discloses a railroad bridge substructure health status quantitative evaluation method which comprises the following steps: adopting a heavy hammer as an excitation source; impacting bridge substructure respectively from the transverse direction of the bridge and the axial direction of the bridge to measure the overall and local vibration modes; establishing a dynamic analysis model of the bridge substructure; taking structure parameters like support rigidity, pier body rigidity and foundation restraint as unknown quantities; taking a measured mode as the target and adopting an optimization algorithm for modifying a finite element model; identifying the actual support rigidity parameter, the pier body rigidity parameter and the foundation restraint rigidity parameter of the bridge substructure; comparing the identification value with a design valve to make a quantitative evaluation on the health status of the bridge substructure.

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Номер записи: 4
15-08-2023 дата публикации

Method, system and device for global positioning of patrol robot and medium

Номер: CN116592888A
Автор: ZHU ZHIYUAN, JIANG FENG, ZHAN JIAWANG, HUANG ZHIYONG, ZHA CHANGHAI, CHEN PENG, XU TIAN
Принадлежит:

The invention relates to a patrol robot global positioning method, system and device and a medium, and the method comprises the steps: obtaining the current global coarse positioning of a robot through RTK and IMU, and carrying out the ICP registration of the point cloud data of a three-dimensional laser radar and the point cloud data of the global coarse positioning, and obtaining the global initial positioning; in the motion state of the robot, calculating a LiDAR odometer according to the radar point cloud data, extracting a sub-map from the global map according to the LiDAR odometer, and calculating the scan-map matching between the radar point cloud data and the sub-map; the method comprises the steps of obtaining a key frame according to the rotation and translation amount of a LiDAR odometer, constructing a LiDAR odometer factor, a scan-map matching factor and an RTK global constraint factor according to the key frame, fusing the scan-map matching factor, the LiDAR odometer factor ...

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Номер записи: 5
01-07-2015 дата публикации

Automatic excitation device of railway bridge foundation structure

Номер: CN104748932A
Автор: ZHAN JIAWANG, ZHANG NAN, XIA HE, XIA CHAOYI, DU XIANTING, QIANG WEILIANG, LI MING, WANG DONGDONG
Принадлежит:

The invention discloses an automatic excitation device of a railway bridge foundation structure. The automatic excitation device of the railway bridge foundation structure comprises a main fixing rack fixed on a padstone at the top of a pier, an impact assembly has suspension type design for reducing vibration of the whole excitation device, and balance weight of an impact head can be automatically adjusted for meeting impact force required by the experiment. A hammer head is made of the beef tendon special polyester material capable of protecting the surface of the pier when the pier is impacted repeatedly. An air pump is used for offering the required power. The automatic excitation device can adjust the size and frequency of the excitation power for automatically impacting the railway bridge foundation structure via the power with fixed frequency and confirmed amplitude, the operation is convenient, the efficiency is high, nondeterminacy and nonrepeatability of the excitation power can ...

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Номер записи: 6
30-06-2023 дата публикации

Anchor cable tensioning device and anchor cable tension detection method

Номер: CN116357365A
Автор: YANG JUN, BIAN WENHUI, DONG MEIQIANG, ZHAN JIAWANG, WANG KEXUE, FANG YI, HAO QINGSHUO, ZHAI ZHAOXI
Принадлежит:

The invention relates to an anchor cable tensioning device and an anchor cable tension detection method, and the anchor cable tensioning device comprises a tensioning assembly which comprises a driving structure and an anchor cable clamping structure, and the anchor cable clamping structure is connected with the driving structure; the first detection assembly is arranged on the tensioning assembly so as to detect the moving distance of the anchor cable; the anchor cable fixing assembly is connected with the tensioning assembly; and the second detection assembly is arranged on the anchor cable fixing assembly so as to detect the moving distance of the anchor cable. According to the technical scheme, the problems that in the prior art, anchor cable tensioning force measurement steps are tedious, and the precision cannot be guaranteed are effectively solved.

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Номер записи: 7
29-08-2023 дата публикации

Riveting and pressing type locking structure of pre-stressed anchor rod and anchoring construction method

Номер: CN116658220A
Автор: BIAN WENHUI, HAO QINGSHUO, ZHAN JIAWANG, WANG KEXUE, FANG YI, MA QIANXUN
Принадлежит:

The invention relates to a rivet pulling and pressing type locking structure of a pre-stressed anchor rod and an anchoring construction method. The pre-stressed anchor rod is provided with a first clamping structure; the sleeve structure is provided with a first matching section and a deformation section, the first clamping structure is arranged in the first matching section and the deformation section in a penetrating manner, and the first clamping structure is clamped with the first matching section; after the pre-stressed anchor rod enters an anchoring hole of a rock mass and forms first anchoring force with the rock mass, pulling force is applied to the pre-stressed anchor rod through the tensioning mechanism, the first clamping structure is driven to drive the first matching section to extrude the deformation section, the deformation section abuts against the hole wall, and second anchoring force is formed. Due to the arrangement, tight combination between the pre-stressed anchor rod ...

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Номер записи: 8
05-01-2011 дата публикации

Vehicle-bridge coupling power experimental model device

Номер: CN0101561979B
Автор: XIA HE, ZHAN JIAWANG, ZHANG NAN, HE XIA, JIAWANG ZHAN, NAN ZHANG
Принадлежит:

The invention discloses a vehicle-bridge coupling power experimental model device, and belongs to the technical field of railroad bridge engineering. The experimental model device consists of a model vehicle and a model bridge, wherein the model bridge comprises a multi-span continuous beam, a bridge pier, an acceleration section and a deceleration section. The model vehicle is processed accordingto the size and structure of a real vehicle. The vehicle is pulled to different positions and heights of the acceleration section by an electric motor, and then is released by power down so as to ensure that the vehicle passes through the bridge at different speeds. The deceleration section is provided with a two-stage deceleration device to consume the kinetic energy of the vehicle, and simultaneously, in order to prevent the vehicle from rebounding, the end part of the deceleration section is provided with an anti-rebounding device. By using the experimental model device, the real structures ...

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Номер записи: 9
05-05-2023 дата публикации

Tunnel boring machine with electromagnetic impact structure on cutterhead

Номер: CN116066132A
Автор: YANG JUN, BIAN WENHUI, LI ZHE, FANG YI, WANG KEXUE, HAO QINGSHUO, ZHAI ZHAOXI, ZHAN JIAWANG, HE XIAOHUI, DONG MEIQIANG, ZHAO YING, MA QIANXUN
Принадлежит:

The invention relates to a tunnel boring machine with an electromagnetic impact structure on a cutterhead, which comprises a tunnel boring machine main body and an electromagnetic impact structure, the electromagnetic impact structure comprises a frame, an electromagnetic mechanism and an impactor mechanism, the frame is fixedly arranged on the cutter head, the electromagnetic mechanism is fixed in the frame, and the impactor mechanism is movably arranged in the electromagnetic mechanism. According to the technical scheme, the problem that in the prior art, when a tunnel boring machine conducts tunneling on hard rock, hob loss is serious is effectively solved.

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Номер записи: 10
23-06-2023 дата публикации

High-prestress anchoring construction equipment and anchoring construction method

Номер: CN116291645A
Автор: YANG JUN, ZHAN JIAWANG, WANG KEXUE, BIAN WENHUI, DONG MEIQIANG
Принадлежит:

The invention relates to high-prestress anchoring construction equipment and an anchoring construction method.The high-prestress anchoring construction equipment comprises a tensioning mechanism and a prestress locking mechanism, the tensioning mechanism comprises a clamping structure and a first driving structure, the clamping structure is used for clamping the end, away from a rock mass, of a rod body, and the clamping structure is fixedly connected with the first driving structure; the prestress locking mechanism comprises a locking structure and a second driving structure, and the locking structure is driven by the second driving structure to enable the locking piece to be tightly combined with the rod body. Through the cooperation of the tensioning mechanism and the prestress locking mechanism, the prestress is formed firstly and then locked, so that the loss of the prestress is avoided, the prestress of the prestress anchor rod is effectively locked, and more stable and accurate surrounding ...

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Номер записи: 11
21-10-2009 дата публикации

Vehicle-bridge coupling power experimental model device

Номер: CN0101561979A
Автор: XIA HE, ZHAN JIAWANG, ZHANG NAN, HE XIA, JIAWANG ZHAN, NAN ZHANG
Принадлежит:

The invention discloses a vehicle-bridge coupling power experimental model device, and belongs to the technical field of railroad bridge engineering. The experimental model device consists of a model vehicle and a model bridge, wherein the model bridge comprises a multi-span continuous beam, a bridge pier, an acceleration section and a deceleration section. The model vehicle is processed according to the size and structure of a real vehicle. The vehicle is pulled to different positions and heights of the acceleration section by an electric motor, and then is released by power down so as to ensure that the vehicle passes through the bridge at different speeds. The deceleration section is provided with a two-stage deceleration device to consume the kinetic energy of the vehicle, and simultaneously, in order to prevent the vehicle from rebounding, the end part of the deceleration section is provided with an anti-rebounding device. By using the experimental model device, the real structures ...

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Номер записи: 12
15-08-2023 дата публикации

TBM system suitable for soft rock tunnel and rockburst tunnel and construction method

Номер: CN116591700A
Автор: HE MANCHAO, HU JIE, YANG JUN, ZHAN JIAWANG, LIU SHUANGZHONG, XU YANPING, LIU GUOPING
Принадлежит:

The invention relates to the technical field of tunnel construction, in particular to a TBM system suitable for a soft rock tunnel and a rockburst tunnel and a construction method. A TBM system suitable for a soft rock tunnel and a rockburst tunnel comprises a main beam, a cutterhead arranged on the main beam, a shield, a first propelling system, a second propelling system, a pipe piece installation system, an anchor rod drilling machine system and an anchor net storage system. The cutterhead is arranged at the front end of the main beam in a center rotating mode and used for crushing tunnel face surrounding rock, and the cutterhead and the main beam are coaxially arranged. The shield is arranged on the rear side of the cutterhead and fixedly sleeves the periphery of the main beam; the TBM system has two working modes which can be mutually converted in the tunneling process, and the two working modes comprise the soft rock tunneling mode and the hard rock tunneling mode. The anchor net ...

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Номер записи: 13
23-05-2023 дата публикации

Anchoring mechanism and supporting construction method

Номер: CN116146261A
Автор: BIAN WENHUI, YANG JUN, HAO QINGSHUO, DONG MEIQIANG, ZHAN JIAWANG, LI ZHE
Принадлежит:

The invention relates to the technical field of tunnel construction, in particular to an anchoring mechanism and a supporting construction method. Wherein the anchoring mechanism comprises a first anchoring assembly, a second anchoring assembly and a third anchoring assembly, the first anchoring assembly comprises a tensioning structure, and the tensioning structure makes contact with the hole wall of the anchoring hole to form first anchoring force; the second anchoring assembly comprises a clamping block structure, and the clamping block structure can penetrate through the tensioning structure to be limited with the anchoring hole so as to form second anchoring force; the third anchoring assembly is arranged at the end, stretching into the anchoring hole, of the tensioning structure and used for stirring the anchoring agent to form third anchoring force. Friction anchoring force is formed through contact between the tensioning structure and the wall of the anchoring hole, limiting is ...

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Номер записи: 14