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99 results about "Low Gravity" patented technology
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Robot carrying method and system in low-gravity environment and storage medium
The invention discloses a robot carrying method and system in a low-gravity environment and a storage medium, and the method comprises the steps: collecting a stick figure drawn by an operator and a real scene image in a current cabin, and inputting the stick figure and the real scene image into a trained dual-branch visual encoder model; a basic action sequence instruction used for controlling the robot to complete material carrying operation is generated, then the target rotation angular speed is monitored in real time in the process of executing the basic action sequence instruction to conduct target grabbing, and if the target rotation angular speed is larger than a set threshold value, a robot clamping jaw is driven to conduct rotation fine adjustment in the reverse direction. Therefore, pure visual instruction interaction is realized to adapt to the condition that voice interaction in a low-gravity scene is completely unavailable, and meanwhile, the problem that an object is easy to generate irregular rotation and is difficult to grab when being stressed under low gravity is solved.
Owner:58 INTELLIGENT TECH (HANGZHOU) CO LTD
Food processor capable of working stably
The utility model discloses a food processor stable in work, which relates to the field of life electric appliances, and comprises a cup body with a built-in stirring piece and a main machine, the cup body comprises an outer cup and an inner cup, the bottom of the outer cup is provided with an inserting part matched with a cutter shaft of the stirring piece in an inserting manner, and the bottom of the inner cup is provided with a matching part matched with the inserting part; the distance between the outer bottom wall of the inner cup and the inner bottom wall of the outer cup is smaller than the height of the inserting part, so that the height of the cup body after the inner cup is embedded into the outer cup can be greatly reduced, the gravity center height of the cup body is further reduced, when a user processes food materials, the food materials can be processed at a relatively low gravity center, the whole machine works more stably, and the user experience is improved. The situation that due to the fact that the gravity center of the whole machine is high, the whole machine generates large vibration noise and even shakes and topples during food material processing is effectively avoided, meanwhile, when a user nests the inner cup into the outer cup to achieve storage, the height of the whole machine is reduced, the user can store the whole machine more conveniently, and the use experience of the user is improved.
Owner:HONGYANG HOME APPLIANCES
Low-gravity-center lead screw type intelligent lifting working platform
The utility model discloses a low-gravity-center lead screw type intelligent lifting working platform which comprises a building body, a heavy frame and a working platform body. A supporting structure is fixedly arranged on the outer side of each layer of beam body of the building main body; the heavy frame is sleeved with the working platform, a lifting device is arranged between the working platform and the heavy frame, and the working platform and the heavy frame move relatively through the lifting device so as to achieve the purpose of lifting; and the lifting device is positioned above the gravity centers of the heavy frame and the working platform. Compared with the prior art, the utility model has the advantages that the structure is simple, and the use is convenient; the problems that the gravity center of a lifted frame body is higher than the stress point of the lifted frame body, and the frame body overturns and falls due to the fact that the frame body is affected by moment are solved. The situation that a traditional protection platform can only achieve one-way falling prevention is thoroughly improved; the working platform can be provided with two anti-falling devices for protection during ascending or descending bidirectional movement; through reverse operation, the effect that the working platform descends on the periphery of the building body layer by layer is achieved; and labor, material and time costs are saved.
Owner:杨德峻 +2
Counterweight-based gravity offload system
Systems and methods simulate reduced-gravity environments using passive counterweight architectures that maintain a substantially constant offload force throughout the user's range of motion. The system may include one or more multi-segment articulated arms, each incorporating a cable routing system that preserves effective cable length during articulation. By routing the cable through coaxial apertures at the joints and through pulley assemblies encapsulated within hollow arm tubes, the offload force remains stable regardless of arm orientation. The system may include a magnetic singularity-avoidance mechanism employing opposed magnets positioned on adjacent arm segments. The magnetic detent biases the arm segments away from singular loading geometries, prevents uncontrolled rotation, and substantially reduces cable twist accumulation. Further embodiments may include gantry-based, trolley-based, or tilting-beam structures for enlarged workspace coverage, and optional friction-offset motors, low-stretch cables, or large-diameter pulleys to minimize hysteresis and maintain greater uniformity of the offload force.
Owner:ATLAS DEVICES LLC
Engineering machine for aloft work and steering method thereof
The invention discloses engineering machinery for aloft work and a steering method of the engineering machinery, and relates to the field of optimization design. The construction machine includes: a chassis; the steering type tire is connected to the chassis; one end of the connecting frame is connected to the chassis, the other end of the connecting frame is connected to the working platform, and no rotary mechanism exists between the connecting frame and the chassis; the balancing weight is connected to the end, away from the working platform, of the chassis, the balancing weight is movable, and the gravity center heights of the balancing weight at least at two different positions are different. Compared with the prior art, a rotary mechanism between the connecting frame and the chassis is omitted, the balancing weight and the connecting frame are directly installed on the chassis, the engineering machine obtains smaller mass and size through the movable balancing weight structure installed at the lower gravity center position, the stability of the engineering machine is improved, the cost is optimized, and transportation and storage are convenient.
Owner:ZOOMLION INTELLIGENT ACCESS MASCH CO LTD
Ventilation wall test system and method for Mars aircraft test
The invention provides a ventilation wall test system and method for Mars aircraft testing, and the system comprises a space environment simulator which can simulate the low-pressure and low-temperature environment of Mars, a gravity unloading device which is installed in the space environment simulator, a ventilation wall assembly which is used for generating a controllable simulation wind field, and a ventilation wall driving device. The wind wall assembly is arranged in a wind guide structure of the space environment simulator and comprises a plurality of fan array units, each fan array unit is of a multi-layer series connection structure, the distance between the adjacent fan array units can be adjusted according to the wind speed of the controllable simulation wind field, and each fan array unit comprises a plurality of fans arranged at non-equal intervals. The Mars transient wind field where the to-be-tested unmanned aerial vehicle is located is accurately simulated, and accurate simulation of distribution of the Mars wind field in time and space and low gravity of the Mars is achieved.
Owner:BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
Comprehensive environment simulation test device and test method
PendingCN122017128ACosmonautic condition simulationsWeather/light/corrosion resistanceThermodynamicsTest sample
The invention relates to the technical field of environment test, and discloses a comprehensive environment simulation test device and method, the device comprises a vacuum tank, a vacuum unit, a first temperature adjusting mechanism, a second temperature adjusting mechanism and a control system, and an opening at one end of the vacuum tank is provided with a sealing door capable of being opened and closed; the vacuum unit is used for adjusting the vacuum degree in the vacuum tank; the first temperature adjusting mechanism is used for adjusting the internal temperature of the vacuum tank; the second temperature adjusting mechanism is used for lowering the internal temperature of the vacuum tank; a micro-low gravity environment simulation module is arranged in the vacuum tank, and the micro-low gravity environment simulation module is used for driving the test sample to rotate in the first direction while rotating in the axial direction, so that the test sample can be simulated to be tested in a comprehensive environment with high / low temperature alternation, different vacuum degrees and different micro-low gravity factors in a single device; and the cost is saved and the occupied space is small.
Owner:CHINA BUILDING MATERIALS ACADEMY CO LTD +1
Smoke bomb for fire drill
The smoke bomb comprises an outer shell, an inner shell, a cooling filter layer, a smoke filling material and a control assembly, the inner shell is located in the outer shell and used for containing the smoke filling material, the space between the inner shell and the outer shell is filled with the cooling filter layer, and the control assembly is located between the inner shell and the outer shell. The control assembly is located at the inner top end of the outer shell, the bottom end of the inner shell is connected with a balance weight assembly, a protection assembly is installed on the outer side of the top end of the balance weight assembly, multiple sets of through grooves are formed in the circumferential wall of the upper portion of the inner shell at equal intervals, and a release assembly is arranged at the position, below the through grooves, in the inner shell. The smoke bomb can stably stand on various complex terrains such as stair steps, slopes and smooth grounds through the composite structure of the low-gravity-center counterweight design and the large-bottom-area anti-skid rubber mat, and safety accidents and exercise distortion caused by toppling are fundamentally eradicated.
Owner:HUNAN XUNBAO MILITARY TRAINING EQUIP CO LTD
Self-adaptive grading energy consumption type rock wall anchoring system and folding and unfolding inflatable residential cabin
The invention relates to a self-adaptive graded energy dissipation type rock wall anchoring system and a folding and unfolding inflatable residential cabin, which comprise an anchoring assembly, a buffer assembly, an inhaul cable and a prestress adjusting assembly, and realize stable anchoring of a folding and unfolding framework inflatable structure in a lunar lava pipe environment. The anchoring assembly is tightly combined with a rock wall drill hole in an expansion mode, and basic anchoring force is provided for the system. The buffering assembly is arranged in the sliding cavity and can absorb environment energy to achieve graded energy consumption when the local rock wall is slightly shocked. Reliable connection between the anchoring assembly and the prestress adjusting assembly is achieved through the inhaul cable. The prestress adjusting assembly adjusts the prestress of the inhaul cable to counteract stress fluctuation caused by factors such as environment deformation and temperature change. The technical problem that an anchoring structure needs to give consideration to both stability and adaptability in special environments such as low gravity, high radiation and easy slight shock of the moon is solved, and a core guarantee is provided for safe deployment of a folding and unfolding framework inflatable structure in the lunar lava tube.
Owner:INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
dual specific gravity cleaner
This invention provides a compound gravity separator, comprising a frame; at least two gravity platforms spaced apart vertically; wherein each pair of adjacent gravity platforms is connected by a transmission support arm; the upper end of the transmission support arm is hinged to the upper gravity platform, the lower end of the transmission support arm is hinged to the lower gravity platform, and the middle part of the transmission support arm is rotatably connected to the frame; and a drive mechanism, mounted on the frame and located around the at least two gravity platforms. The compound gravity separator provided by this invention achieves vibration of multiple gravity platforms driven by a single drive unit through a stacked arrangement and a reverse linkage design of the transmission support arms. This eliminates multiple independent drive systems, significantly reducing costs and energy consumption; utilizes the inertial cancellation principle of reverse motion to significantly reduce overall machine vibration; the stacked structure reduces the floor space compared to traditional series layouts, and the material falls by gravity, eliminating the need for intermediate lifting and conveying devices.
Owner:SHIJIAZHUANG JULITE MACHINERY
Gas magnetic overhanging type micro-low gravity test air floating workbench for inhibiting residual magnetism and eddy current interference
PendingCN121990192ACosmonautic condition simulationsStructural/machines measurementMagnetic disturbanceMagnetic bearing
The invention discloses an air-magnetic overhanging type micro-low gravity test air-floating workbench capable of inhibiting residual magnetism and eddy current interference. The air-magnetic overhanging type micro-low gravity test air-floating workbench comprises a rigid bearing framework and a functional composite material layer. The rigid bearing framework is made of non-magnetic high-specific-stiffness aluminum alloy, and mechanical supporting and magnetic field isolation are achieved. And the functional composite material layer is compounded by uniformly dispersing and consolidating corrosion-resistant nickel-based soft magnetic particles in a non-magnetic matrix, and is used as a gas-magnetic coupling working interface. The adopted nickel-based soft magnetic particles have high saturation flux density, low coercive force, high resistivity and good chemical stability, it is ensured that the functional composite material layer formed by the nickel-based soft magnetic particles has lasting and reliable working surface performance, and residual magnetism interference force and eddy current damping force are fundamentally eliminated on the premise that needed vertical adsorption force is maintained. According to the design, the unexpected horizontal disturbing force generated by the air floatation working table is reduced to one thousandth of the rated vertical bearing force of the gas magnetic bearing, and the precision of dynamic simulation in a micro-low gravity ground experiment is remarkably improved.
Owner:TIANJIN UNIV
Oxygen generation systems for low gravity applications
Oxygen generation systems for use in low-gravity environments include a cell stack having an anode and a cathode. An anode-side phase separator and a cathode-side phase separator are each fluidly coupled to outlets of the cell stack. The anode-side phase separator separates a mixture into liquid water and gaseous oxygen and the cathode-side phase separates a mixture int liquid water and gaseous hydrogen. A ducting system is configured to house the cell stack and the cathode-side phase separator, a hydrogen sensor is arranged at an outlet of the ducting system, and a controller is configured to stop oxygen generation at the cell stack when a concentration of hydrogen is detected at or above a threshold level at the hydrogen sensor at the outlet of the ducting system.
Owner:HAMILTON SUNDSTRAND CORP
Rotary impact wear test device for simulating comprehensive lunar environment
PendingCN121632831APreparing sample for investigationMaterial strength using repeated/pulsating forcesTemperature controlTest sample
The invention relates to a rotary impact wear test device for simulating a lunar comprehensive environment. The rotary impact wear test device comprises a temperature control assembly, a low-gravity simulation assembly, an irradiation simulation assembly, a lunar dust sprinkling assembly, a rotary assembly and a test shell, a test chamber is defined by the test shell, a vacuum environment is formed in the test chamber, the rotating assembly is arranged on an inner bottom plate of the test chamber, a test sample is used for being fixed to the rotating assembly, and the temperature control assembly, the irradiation simulation assembly and the low-gravity simulation assembly are all arranged in the test chamber. The bottom end of the lunar dust sprinkling assembly penetrates through the top of the test shell and is inserted into the test cabin, and the top end of the lunar dust sprinkling assembly extends to the outside of the test shell; by means of the arrangement, friction abrasion between lunar dust and a sample in the moving process can be achieved, and the testing accuracy is improved; meanwhile, the uniform suspension state of lunar dust particles can be kept for a long time, and the accuracy of a test result is improved.
Owner:TAIYUAN UNIVERSITY OF TECHNOLOGY
A simulator for spacecraft low gravity testing
The present application relates to spacecraft ground environment test device technical field, especially to a kind of simulator for spacecraft low gravity test, buffer mechanism is installed on chassis, one side of fork shear mechanism is installed on buffer mechanism, counterweight mechanism is installed on the other side of fork shear mechanism, for simulating spacecraft mass and moment of inertia;Wheel mechanism is arranged on the side of chassis, and is provided with multiple groups. By adding different number of counterweight block to the circumferentially distributed counterweight disc, the mass center horizontal position of counterweight mechanism is changed, so that it is the same as the horizontal position of spacecraft mass center, the mass center height is adjusted by fork shear mechanism, the first spring and hydraulic telescopic rod in buffer mechanism simulate buffer working condition, the stroke of first sliding block in contraction process can be effectively adjusted by stop plate adjusted by screw rod, and it can also be used to assist the extension of fork shear mechanism, for flat ground walking, climbing, in situ steering working condition, wheel mechanism in the present application can be realized.
Owner:BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
A precise positioning mechanism of a five-axis side-hung double-arm double-section manipulator
The utility model relates to mechanical hand positioning technical field, concretely to a kind of accurate positioning mechanism of five-axis side hanging double-arm double-section mechanical hand, including longitudinal slide, longitudinal slide outer side is equipped with sliding slot, sliding block is slidably installed in the sliding slot, the one side of sliding block is fixedly installed with L-shaped plate, the L-shaped plate bottom end is fixedly installed with inclined bracing plate, the top of longitudinal slide is respectively equipped with longitudinal slide rail by bolt, the outer side of longitudinal slide rail is slidably installed with first sliding clamp, first inner thread block is fixedly installed between the first sliding clamp, first inner thread block and L-shaped plate top are equipped with horizontal sliding assembly by bolt, the utility model is equipped with L-shaped plate structure with inclined bracing plate by longitudinal slide side, and the rigidity linkage of combination horizontal platform and longitudinal drive component is formed Space triangular support and low gravity center layout, substantially enhance the bending and torsion resistance of mechanism, ensure positioning stability and motion stability under high load.
Owner:FUZHOU JUANG PLASTIC RUBBER CO LTD
A high-precision dynamic compensation algorithm for gravity disturbance torque in a dumbbell-shaped satellite simulator
ActiveCN119018373BCosmonautic condition simulationsSustainable transportationClassical mechanicsZero gravity
This invention discloses a high-precision dynamic compensation algorithm for gravity disturbance torque of a dumbbell-shaped satellite simulator, relating to the field of spacecraft ground zero-gravity simulation experiments. Based on a high-precision dynamic compensation system for gravity disturbance torque of a dumbbell-shaped satellite simulator, a camera field-of-view coordinate system and a simulator body coordinate system are established. A control torque for the dumbbell-shaped simulator is established in the camera field-of-view coordinate system, and the three-axis attitude of the dumbbell-shaped simulator is maintained and controlled. The gravity disturbance torque is calculated in real time and dynamically compensated. The dynamic compensation algorithm provided by this invention can continuously and automatically calculate the compensation torque and obtain the movement distance of the counterweight, performing real-time compensation for the gravity disturbance torque, ensuring that the simulator's center of mass coincides with the center of the ball bearing, greatly improving the accuracy and reliability of spacecraft ground micro-low gravity simulation experiments.
Owner:HARBIN INST OF TECH +1
Attitude self-adaptive balance mechanism in global low-gravity environment
The invention discloses a posture self-adaption balance mechanism in a global low-gravity environment. The posture self-adaption balance mechanism comprises a connecting assembly, a three-axis posture decoupling assembly, a dynamic balance assembly and a human body constraint assembly. The connecting assembly is used for being connected with external suspension equipment. The three-axis attitude decoupling assembly is connected with the connecting assembly, and the three-axis attitude decoupling assembly is used for providing three-degree-of-freedom rotation movement, including pitching, rolling and yawing, of the subject relative to the external suspension equipment; the dynamic balance assembly is connected with the three-axis attitude decoupling assembly, and the dynamic balance assembly is used for generating reverse gravitational torque to offset overturning torque generated by attitude change of the subject; the human body binding assembly is connected with the three-axis posture decoupling assembly, and the human body binding assembly is used for being worn on the body of a subject and transmitting force and torque. Three-degree-of-freedom attitude decoupling and dynamic moment balance are realized by utilizing a pure mechanical principle, and a suspension force vector is ensured to always pass through a system to synthesize a mass center, so that the omnidirectional motion characteristic in a low-gravity environment is accurately reproduced on the ground.
Owner:HUNAN UNIV
Multi-source data joint identification and mid-lower earth crust high conductor inversion method
PendingCN121899922ADesign optimisation/simulationSpecial data processing applicationsEarth crustElectrical conductor
The invention discloses a method for multi-source data joint identification and inversion of a middle and lower earth crust high conductor, and relates to the technical field of geophysical exploration. The method for multi-source data joint identification and inversion of the middle and lower earth crust high conductor mainly comprises the following steps: carrying out potential field separation on Bouguer gravity anomaly data to obtain residual gravity anomaly, regional gravity anomaly and field source depth, and further determining earth crust residual gravity anomaly and middle and lower earth crust density disturbance characteristics; and calculating residual gravity low anomalies reflecting the middle and lower earth crust high conductors in the research area, delineating plane distribution of the middle and lower earth crust high conductors, and performing random sub-domain three-dimensional automatic inversion for the residual gravity low anomalies to obtain a three-dimensional space distribution form of the middle and lower earth crust high conductors. By implementing the multi-source data combined identification and inversion method for the mid-lower earth crust high conductor provided by the invention, the mid-lower earth crust high conductor can be rapidly and effectively identified and inverted, and the three-dimensional space distribution of the mid-lower earth crust high conductor can be obtained.
Owner:贵州省地质调查院
Micro-low gravity simulation system for complex multi-body target
The application provides a micro-low-gravity simulation system for a complex multi-body target, which is driven by a hybrid method of active and passive driving and adopts a multi-stage suspension method, so that the flexibility of system movement is greatly improved, and aims at meeting the ground experiment requirements of a space mechanical arm, a lunar rover and other complex multi-degree-of-freedom spacecrafts; the system comprises a main frame, the main frame is a frame structure built by a rod body, the main frame supports a top sling driving system and a multi-stage movement system through a plurality of supporting legs; a control cabinet is further installed on the main frame, and the control cabinet is used for controlling the actions of the sling driving system and the multi-stage movement system.
Owner:TIANJIN UNIV
Mars ascender launching stage low-gravity simulation test device and test method
The invention relates to a Mars ascender launching stage gravity simulation test device and a test method. Simulation of a preparation stage before launching of an ascender in an inclined ground environment, simulation of a Mars gravity environment in a launching stage and gravity restoration of a launching completion stage are realized. The device comprises two functional units, namely a suspension type low-gravity simulation functional unit and a counterweight and unlocking system functional unit. The suspension type low-gravity simulation function unit is a set of gravity compensation device and is connected with the counterweight system and the launching platform through a fixed pulley, and the simulation effect of the gravity of the Mars in the ground environment is achieved through rope tension. The counterweight and unlocking system function unit is connected with the counterweight through an electromagnetic lock, and counterweight locking before launching and gravity restoration after launching are achieved. According to the invention, the Mars gravity suspension balance is carried out on the Mars sampling ascender, and the Mars environment in the launch process of the ascender is simulated.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Oxygen generation systems for low gravity applications
Oxygen generation systems for use in low-gravity environments include a cell stack with an anode-side phase separator and a cathode-side phase separator fluidly coupled to outlets of the cell stack. An anode-side flow controller and a cathode-side flow controller are arranged downstream from the respective phase separators. A pressure differential is induced upstream of the anode-side flow controller that is greater in pressure than a downstream side thereof. A pressure differential is induced upstream of the cathode-side flow controller that is greater in pressure than a downstream side thereof. An input flow controller is arranged upstream from the stack inlet, the input flow controller configured to cause a pressure differential such that an upstream side of the input flow controller is greater than a downstream side of the input flow controller.
Owner:HAMILTON SUNDSTRAND SPACE SYST INT INC
Tandem double-rotor cross-medium unmanned aerial vehicle
The invention belongs to the technical field of cross-medium unmanned aerial vehicles, and discloses a tandem type double-rotor cross-medium unmanned aerial vehicle which comprises a bow part, a middle fuselage and a stern part which are connected into a whole in a sealed mode through end seals. The middle fuselage is formed by longitudinally butting two fuselage sections and penetrates out of the stern end seal after penetrating through the bow end seal, the two fuselage sections and the middle end seal in sequence through a full-length bolt, and the two ends of the middle fuselage are locked through clamping plate nuts respectively. The unmanned aerial vehicle has a high gravity center mode that the motor is higher than the vehicle back and a low gravity center mode that the motor is installed in the vehicle body and provided with the fin stabilizer. The problems that an existing cross-medium unmanned aerial vehicle is low in underwater propulsion efficiency and large in navigation power consumption are solved, the problem that additional airborne equipment influences the gravity center and stability of the unmanned aerial vehicle is solved, good flight performance and underwater navigation capacity are achieved, and the diversified requirements of the civil field are met.
Owner:HARBIN
Low-gravity-center spherical holder locking device with fine adjustment function
The utility model discloses a low-gravity-center spherical holder locking device with a fine adjustment function. The low-gravity-center spherical holder locking device comprises a main body, a sphere, a sphere locking tray arranged at the bottom of the sphere, a locking ring arranged at the bottom of the sphere locking tray and a locking ring bracket arranged at the bottom of the locking ring. The trapezoidal locking sliding block and the trapezoidal fine adjustment sliding block are arranged on the side face of the locking ring; the locking driving rod is arranged on the side face of the trapezoidal locking sliding block; and the fine adjustment driving rod is arranged on the side face of the trapezoidal fine adjustment sliding block. Compared with the prior art, the cradle head with the structure has the advantages that the gravity center of the ball moves downwards, the structure is simple and compact, the locking effect is safer and more reliable, and a certain ball tightness fine adjustment function is achieved.
Owner:吴同华
Machine for cutting decorations for frustoconical bodies
The present invention relates to a machine for cutting decorations for frustoconical bodies, for cutting printed strips wherein arch-shaped decorations and disposable trapezoidal portions are alternated. The machine comprises two longitudinal supports mounted on clamping pieces and carriers of respective groups of counter blades; and two independent groups of blades attached to the respective groups of counter blades and defining a gap between them of increasing width towards a lower gravity outlet opening of the trapezoidal portions separated by cutting. The blades of each group are fixed to respective drive shafts mounted in holes in the longitudinal supports and fixed to a common plate driven by a cylinder. The clamping parts of the longitudinal supports and the common plate are exchangeable for others that provide different inclinations and separations of the groups of blades and counter blades.
Owner:MECANICA Y TECHA ALIMENTARIA
Vertical three-body underwater vehicle structure and design method thereof
PendingCN121849329AGeometric CADSpecial data processing applicationsGravity centerUnderwater vehicle
The invention relates to a vertical type three-body underwater navigation body structure which comprises three streamline revolving bodies, two streamline revolving bodies are symmetrically arranged on the upper portion, one streamline revolving body is arranged on the lower portion, and the axis of the streamline revolving body on the lower portion is located in the symmetry plane of the two streamline revolving bodies on the upper portion. The axes of the three streamline revolving bodies are parallel; the T-shaped rod is respectively connected with the three streamline revolving bodies; the mechanical arm is arranged at the bottom of the streamline revolving body at the lower part; horizontal rods are fixed to the two sides of the tail of the T-shaped rod, and main propellers are horizontally fixed to the two horizontal rods. The two streamline revolving bodies at the upper part are provided with vertical channels, and vertical propellers are arranged in the vertical channels; the streamline revolving body on the lower portion is provided with a horizontal channel, and a horizontal propeller is arranged in the horizontal channel. According to the navigation body structure, the transverse width is larger, the gravity center is lower, rolling and pitching can be effectively reduced, and the environment flow disturbance resisting capacity of the navigation body is improved.
Owner:CHINA SHIP SCIENTIFIC RESEARCH CENTER
Special environment simulation device and method
PendingCN122009540ACosmonautic condition simulationsWithdrawing sample devicesAviationControl system
The invention relates to the technical field of spaceflight, aviation, materials and buildings, and discloses a special environment simulation device and method.The device comprises a vacuum container, a vacuum simulation system, a temperature simulation system, a low-gravity simulation system and a control system; the vacuum simulation system is used for adjusting the vacuum degree in the vacuum container; the temperature simulation system is used for adjusting the temperature in the vacuum container through the heating temperature control system and the refrigerating system; and the low-gravity simulation system is used for adjusting a low-gravity parameter value in the vacuum container. According to the invention, the environment conditions of ultra-vacuum, low gravity and large temperature difference of the lunar surface are created and simulated on the ground. By integrating technologies of low-gravity simulation, temperature simulation, low-vacuum simulation and the like, multi-factor coupling environment simulation of the lunar surface is realized, important technical support is provided for lunar exploration and deep space exploration, and performance testing of lunar exploration equipment and engineering materials and related scientific experiments can be effectively carried out.
Owner:CHINA BUILDING MATERIALS ACADEMY CO LTD +1
High-strength low-gravity-center generator set vibration reduction base
Owner:BINA ELECTRIC TECH (GUANGZHOU) CO LTD
Perforating method for promoting balanced injection of fracturing fluid of unconventional oil and gas horizontal well
The invention discloses a perforation method for promoting balanced injection of fracturing fluid of an unconventional oil and gas horizontal well. The perforation method comprises the following steps: 1) determining the single-hole sand inlet amount at each phase in the circumferential direction of a shaft corresponding to a fracturing section of the horizontal well under the action of gravity; 2) determining the diameter and the number of eyelets required to be designed at each phase in the circumferential direction of each cluster of the fracturing section; (3) the average diameter and the arrangement number of perforations needed at the corresponding phases of the gravity high side and the gravity low side of the horizontal well are obtained; (4) the needed horizontal well self-orientation variable-aperture perforator is prepared; 5) designing a horizontal well self-orientation variable aperture perforator corresponding to each fracturing section in the working range of the horizontal well; (6) bridge plug setting and multi-cluster perforation tool string installation and operation are conducted; and (7) bridge plug setting, multi-cluster perforation and sand fracturing operations of all fracturing sections of the horizontal well are completed in sequence. The method belongs to the technical field of perforation well completion, and can ensure that the sand inlet amount of each phase perforation hole in the circumferential direction is consistent within the set time length.
Owner:CHINA NAT PETROLEUM CORP +1
Truss type frame and new energy truck
The invention belongs to the technical field of vehicle frames, and particularly relates to a truss type vehicle frame and a new energy truck. The truss type vehicle frame comprises a truss I, a truss II and two bridge frames connected to the tops of the truss I and the truss II; a space is reserved between the first truss and the second truss to serve as a mounting space of the suspension, the bottoms of the bridges are fixedly connected with the top faces of the first truss and the second truss, the space below the tops of the bridges is used for mounting wheels, the first truss and the second truss which are spaced by a certain distance are connected into a whole through the two bridges, and the structural strength of the whole frame is guaranteed. The suspension can be installed between the first truss and the second truss and does not need to be arranged in the trusses in a penetrating mode, the truss type frame does not need to be lifted, installation complexity is lowered, the gravity center of a compartment is lowered, and the stability of the vehicle in the running process is improved. By means of the truss type frame, the new energy truck has the low gravity center and running stability, the cargo platform can be lowered to the maximum degree, and the convenience of cargo loading and unloading is improved.
Owner:HUNAN CSR TIMES ELECTRIC VEHICLE
Low-gravity surface folding type flexible array, antenna and unfolding method of low-gravity surface folding type flexible array
The invention relates to a low-gravity surface folding type flexible array, an antenna and a folding and unfolding method of the low-gravity surface folding type flexible array. The device is mainly composed of a driving mechanism, a linear stretching mechanism, a folding flexible array, an antenna and a supporting structure. The driving mechanism is used for tracking the sun by the folding type flexible array, and the linear stretching mechanism is responsible for erecting and unfolding the folding type flexible array and the antenna. The folding flexible array comprises a flexible cell panel, a bottom box plate, a top box plate, a spring assembly and a flat cable, and can be kept tensioned in a low-gravity environment. The unfolding method comprises the steps that the linear stretching mechanism acts to unfold the folded flexible array and the antenna frame, and then the driving mechanism acts to rotate the flexible array and the antenna frame to a specified position. During repeated unfolding and folding, the linear stretching mechanism driving assembly provides torque, and vertical repeated unfolding and folding of the unfolding and folding truss are achieved. The device is simple in structure, has the advantages of being capable of being unfolded repeatedly, large in unfolding and folding ratio, light in weight and the like, and can be vertically unfolded reliably on the surface of a low-gravity planet and supported on a spacecraft platform.
Owner:SHANGHAI AEROSPACE SYST ENG INST