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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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Применить Всего найдено 7. Отображено 7.
11-08-2023 дата публикации

Control method and control device for high-viscosity oil retarder

Номер: CN116572919A
Автор: ZHANG ZHIJIE, REN XIAOYI, GAO ZHIZHENG, YU LEI
Принадлежит:

The invention provides a control method and device for a high-viscosity oil retarder, and the method comprises the steps: determining a first retarding gear of the high-viscosity oil retarder in response to a received first gear engaging operation; determining a first initial opening degree of a first flow control valve and a second initial opening degree of a second flow control valve according to the first retarding gear; by controlling on-off of a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve, high-viscosity oil is sucked into or pumped out of a working cavity in a high-viscosity oil retarder body according to the target oil pumping amount corresponding to the first initial opening degree, and the high-viscosity oil is discharged out of the working cavity according to the target oil outlet amount corresponding to the second initial opening degree; and the pressure in the working cavity in the retarder body is changed, so that the speed ...

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Номер записи: 1
01-08-2023 дата публикации

Parallel overflow pressure-limiting valve of hydraulic retarder

Номер: CN116517982A
Автор: WANG TONG, GAO ZHIZHENG, YIN YAO, YU LEI
Принадлежит:

The parallel overflow pressure-limiting valve comprises a plunger type pressure-limiting valve and a ball type safety valve, valve bodies of the plunger type pressure-limiting valve and the ball type safety valve are both integrated on a retarder shell, and the plunger type pressure-limiting valve and the ball type safety valve are communicated with a retarder working cavity through oil channels to form a parallel structure; and the plunger type pressure limiting valve and the ball type safety valve are respectively communicated with the oil storage cavity through an oil drainage port arranged on the valve body. Two-stage pressure limiting is adopted, the first stage is the plunger type pressure limiting valve, the pressure limiting precision of the structure is high, but the flow is limited to a certain degree, when the pressure of an oil supply pump or a system is too high due to the fact that the vehicle speed is too high during braking, the flow is large, the system pressure rises continuously ...

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Номер записи: 2
25-07-2023 дата публикации

Multi-contact rotary table type hydraulic compaction molding machine

Номер: CN116475362A
Автор: WANG ZIXUAN, GAO QINGFANG, GAO ZHIZHENG, WANG YUMEI
Принадлежит:

The invention discloses a multi-contact rotary table type hydraulic compaction molding machine which is characterized in that a weighing quantitative sand adding device is arranged at the upper end part of a rack, a movable sand adding cylinder and a multi-contact compaction device are arranged at the middle upper part of the rack, a rotary worktable is arranged at the lower end of the rack, and the rotary worktable comprises a rotary worktable surface and a support base; the lower end of the supporting base is connected with the lower end of the machine frame, the upper end of the supporting base is rotationally connected with the rotary working table top, a rotating mechanism is arranged between the supporting base and the rotary working table top, and a hydraulic lifting working table is arranged on the portion, below the rotary working table top, of the machine frame. And a residual sand frame device is arranged on the rack above the rotary working table. The strength of the cavity ...

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Номер записи: 3
04-08-2023 дата публикации

Tandem type overflow pressure limiting valve of hydraulic retarder

Номер: CN116538215A
Автор: GAO ZHIZHENG, WANG TONG, YU LEI, REN XIAOYI
Принадлежит:

The invention discloses a tandem overflow pressure-limiting valve of a hydraulic retarder. The tandem overflow pressure-limiting valve comprises a first-stage pressure-limiting valve and a second-stage pressure-limiting valve, the valve body is integrated on the retarder shell; the first-stage pressure limiting valve is installed in the second-stage pressure limiting valve, and a valve body of the second-stage pressure limiting valve is integrated on the retarder shell. The second-stage pressure limiting valve is communicated with a retarder working cavity through a main oil duct, an oil inlet is formed in the front end of the second-stage pressure limiting valve, and the two ends of the oil inlet are communicated with the main oil duct and the pressure limiting valve respectively, so that the first-stage pressure limiting valve and the second-stage pressure limiting valve form a series connection structure; an oil discharge port of the first-stage pressure limiting valve is communicated ...

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Номер записи: 4
30-06-2023 дата публикации

Leveling method and leveling system for full-floating leveling ship

Номер: CN116353811A
Автор: PAN WEI, LI YIYONG, LIU DEJIN, LI JIN, FU YUANPING, WANG DIANWEN, SHANG QIANKUN, SONG JIANGWEI, HE YAFENG, ZHU CHUNFENG, XU LIANG, LYU HUSHENG, LI DEZHOU, WANG FUJING, ZHANG HAONAN, JIA YANSHUO, WANG CHONG, WANG WENBIAO, LI YING, WANG CHUANBIN, JIA WENTING, GAO ZHIZHENG, YAO ZHONGLI, WANG SIYUAN, ZHANG CHENGCHENG, WANG JINXIAN
Принадлежит:

The invention belongs to the technical field of leveling ships, and relates to a leveling method and a leveling system for a full-floating leveling ship. The leveling method comprises a moment leveling sub-method, and the moment leveling sub-method comprises the following steps: establishing a three-dimensional coordinate system of a leveling ship; before leveling operation, the large and small vehicles are moved to an operation starting point position, a ship body is leveled, and initial barycentric coordinates of a large and small vehicle system and a ballast tank system are calculated respectively; during the leveling operation, calculating real-time barycentric coordinates of the large and small vehicle system according to the real-time positions of the large and small vehicles and the real-time weight of stones in the riprap pipe so as to calculate real-time gravity torque generated by the movement of the large and small vehicle system; and constructing a moment balance equation to ...

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Номер записи: 5
01-08-2023 дата публикации

Control method for controlling loading of magnetorheological fluid medium retarder by utilizing variable pump

Номер: CN116517985A
Автор: ZHANG ZHIJIE, GAO ZHIZHENG, YU LEI, YU WENCAI
Принадлежит:

The invention discloses a control method for controlling loading of a magnetorheological fluid medium retarder through a variable pump, and the control method comprises the following steps: an electromagnetic valve 01 is electrified, and the retarder is converted into a loading state from an unloaded state; the retarder is controlled to be loaded to enter an oil supplementing state, namely the electromagnetic valve 02 is controlled to be powered on; the retarder is controlled to be loaded to enter a torque increasing state, and an electromagnetic valve 02 and an electromagnetic coil are controlled according to a mechanical system pressure threshold value of the retarder; the retarder is controlled to be loaded to enter a torque reduction state, and an electromagnetic valve 02 and an electromagnetic coil are controlled according to a mechanical system pressure threshold value of the retarder; under the control of the variable oil pump, the electromagnetic valve and the electromagnetic coil ...

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Номер записи: 6
25-08-2023 дата публикации

Hydraulic retarder driven valve control system

Номер: CN116641975A
Автор: GAO ZHIZHENG, WANG TONG, YU LEI, REN XIAOYI
Принадлежит:

The invention discloses a hydraulic retarder driven valve control system which comprises a driven valve 1 and a driven valve 2, and the driven valve 1 and the driven valve 2 are arranged at an outlet and an inlet of a stator cavity and an inlet of a rotor cavity respectively. The oil storage cavity is respectively communicated with the driven valve 1 and the driven valve 2; the variable pump is communicated with the oil storage cavity; the electromagnetic valve is arranged on a pipeline between the oil storage cavity and the driven valve 1 and the driven valve 2, and is used for simultaneously controlling the opening and closing of the driven valve 1 and the driven valve 2; by arranging the two-position three-way electromagnetic valve, compared with a common electromagnetic valve matched with a valve rod structure in the market, the space occupied in the hydraulic retarder is small, the internal space of the retarder is saved, the two driven valves are controlled through the two-position ...

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Номер записи: 7