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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 7. Отображено 7.
14-04-2023 дата публикации

Method for rapidly adjusting and maintaining plate-type ballastless track filling layer of operation high-speed rail

Номер: CN115961509A
Принадлежит:

The invention discloses a method for rapidly adjusting and maintaining a filling layer of a plate-type ballastless track of an operating high-speed rail, and belongs to the technical field of rail transit. According to the track data, the space position adjustment amount of the track plate is obtained; releasing the limiting device of the track plate; the track plate is lifted, so that the track plate is separated from the filling layer on the base; a part of each of the two sides of the filling layer on the base is chiseled away; an adhesion agent is sprayed on the remaining unchiseled filling layer on the base; a mesh is inserted between the base and the track plate, and the mesh covers the filling layer which is not chiseled away; adjusting the height of the track plate according to the space position adjustment amount of the track plate; and the two sides of the track plate are sealed, and a grouting material is poured between the base and the track plate. The whole existing filling ...

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28-04-2023 дата публикации

Method for repairing vertical reflection crack of ballastless track filling layer

Номер: CN116024853A
Принадлежит:

The invention discloses a method for repairing a vertical reflection crack of a ballastless track filling layer, which comprises the following steps of: under the condition of track plate coverage, removing a filling layer part which is corresponding to a joint cutting position and has generated a vertical reflection crack; cleaning equipment is connected with the hollow pipeline to clean the cavity and the kerfs; flexible filling materials are injected into the kerfs to form flexible filling of the kerfs; the edge of the cavity is sealed, and a pouring hole and an exhaust hole are reserved; a repairing material is poured into a cavity in the sealing edge until the exhaust hole overflows slurry so as to ensure full pouring; and after the repairing material reaches the preset strength, the sealing edge is removed, and repairing of the filling layer is completed. By means of the technical scheme, the good waterproof effect of the kerf is still achieved under the condition that the environment ...

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23-05-2023 дата публикации

Longitudinal connecting plate type ballastless track filling layer repairing material and repairing method

Номер: CN116143488A
Принадлежит:

The invention discloses a repairing material for a filling layer of a longitudinally connected plate type ballastless track. The repairing material comprises 14-50 parts of an active component, 0.1-1 part of a penetrant, 0.1-2 parts of a reaction accelerator, 0.1-1 part of a water repellent agent, 0-1 part of a defoaming agent and 60-90 parts of a solvent, the invention further discloses a longitudinal connecting plate type ballastless track filling layer repairing method. According to the stress and deformation characteristics of the longitudinal connecting plate ballastless track structure, a specific grouting tool technology is adopted, and targeted repair of the filling layer part in a certain area below the rail bearing table with the maximum stress or the most serious abrasion is achieved. According to the method, the strength and compactness of the surface layer of the filling layer can be improved, the defects of an existing open joint filling and repairing method are overcome, ...

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28-04-2023 дата публикации

Method for repairing void of operation high-speed rail ballastless track extruded sheet

Номер: CN116024856A
Принадлежит:

The invention discloses a void repairing method for an extruded sheet of a ballastless track of an operation high-speed rail. The void repairing method comprises the steps that anchor bars are implanted into a bridge abutment of a to-be-repaired area; a gap formed by the extruded sheet between the base plate of the ballastless track and the bridge abutment is cleaned, and the lower surface of the extruded sheet is cut and trimmed; a gap between the trimmed extruded sheet and the base plate is placed in a pouring bag in a disengagement mode; temporary pressing devices are arranged on the upper side and the lower side of the bridge abutment and the base plate through anchor bars so as to carry out temporary buckling and pressing on the extruded sheet and the gap disengagement between the bridge abutment and the base plate; a high-flow-state self-filling grouting material is injected into the portion, between the buckled abutment and the base plate, of the pouring bag till the void area is ...

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17-08-2021 дата публикации

High-durability engraved mark on concrete surface and construction method

Номер: CN113264781A
Принадлежит:

The invention discloses a high-durability engraved mark on the concrete surface and a construction method. The construction method comprises the steps that a horizontal or non-horizontal mark groove is engraved in the concrete surface according to a preset mark; for the horizontal mark groove or the non-horizontal mark groove, the bottom of the mark groove is coated with a capillary crystalline material, and a capillary crystalline layer is formed; or, for the horizontal mark groove, an interface agent is coated at the bottom of the mark groove to form an interface layer; the interface layer is filled with a self-leveling material or a paste material to form a filling layer; for the non-horizontal mark groove, the bottom of the mark groove is coated with an interface agent, and an interface layer is formed; and a paste material is poured on the interface layer to form a filling layer. According to the method, designed patterns or mark information can be clearly displayed, the concrete can ...

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25-04-2023 дата публикации

Method for replacing and repairing operation high-speed rail ballastless track extruded sheet

Номер: CN116005499A
Принадлежит:

The invention provides an operation high-speed rail ballastless track extruded sheet replacing and repairing method, and relates to the technical field of railway ballastless track structure repairing. Edge sealing structures are arranged on the two sides of a line at the design position of the original damaged extruded sheet and the exposed end of the beam end, and a grouting area is formed; a grouting pipe is inserted into the grouting area, and a grouting material is evenly injected into the grouting area according to the amount of the grouting material needed by the grouting area; the grouting pipe is taken out, and a temporary pressing device is arranged on the base plate on the upper side of the grouting area; and the grouting material reacts and expands, the grouting area is densely filled, and the extruded sheet is obtained after curing. According to the method, after the original damaged extruded sheet is thoroughly removed, the material similar to the extruded sheet is cast in ...

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11-04-2023 дата публикации

Method for improving interface connection performance between filling layer and track plate

Номер: CN115948942A
Принадлежит:

The invention discloses a method for improving interface connection performance between a filling layer and a track plate. The method comprises the following steps: preparing isolation cloth which is consistent with a bottom plate of the track plate in size and can permeate and adsorb cement paste on two sides; after track plate concrete is vibrated and flattened, isolation cloth is flatly laid at the bottom of the track plate, so that a slurry-rich layer on the surface of the track plate concrete permeates into the isolation cloth, and a strong-bonding compact cement slurry layer is formed by the slurry-rich layer and the isolation cloth; the method comprises the following steps: paving a track plate with isolation cloth adhered to the bottom, performing fine adjustment and edge sealing, then pouring self-compacting concrete, in the pouring process of the self-compacting concrete, enabling internal floating slurry to permeate into the isolation cloth adhered to the bottom surface of the ...

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