36 results about "Reduced Gravity" patented technology

A fluidic lens may include an optical surface configured for deflection dominated by bending stress. An adjustable concentric load may be applied to the optical surface to cause a clear aperture region of the optical surface to deflect with generally spherical curvature. Adjusting the concentric load controls the radius of curvature. An adjustable uniformly-distributed load may be applied to the optical surface by fluid pressure that causes the clear aperture region to deflect with an aspheric shape. Adjusting the pressure controls the asphericity of curvature. First and second fluids having similar densities and different refractive indexes may be disposed on either side of a deflectable optical surface to help balance gravitational loading on either side of the optical surface, thereby reducing gravity-associated aberrations.

The invention relates to a mass balancing device and method for a lower limb rehabilitation training patient. The balancing device comprises a reduced gravity generating mechanism, a bracket, an electric winch, a steel wire rope, a pulley wheel, a force sensor, a suspender, a running machine and a control system. When a reduced gravity walking training is carried out, the patient wears the suspender to stand on the running machine; the suspender is connected to the steel wire rope through the pulley wheel and two ends of the steel wire rope are respectively mounted on the reduced gravity generating mechanism and the electric winch; and the size of the actual reduced gravity detected by the force sensor is fed back to the control system to realize closed-ring control. Aiming to the patient of lower limb motor dysfunction caused by central nervous system diseases including spinal injuries, brain stroke and the like, a load to lower limbs of the patient which is caused by the self-gravity of the patient and the dynamic load in the walking process can be simultaneously relieved when the reduced gravity walking training is carried out, so as to realize constant-mass gravity reduction. According to the rehabilitation conditions of the patient or the training requirements, a weight reducing device provided by the invention can conveniently adjust a gravity reducing ratio. The suspender of the weight reducing device can be moved along the gravity center of the patient in real time and is good for the rehabilitation of normal physiological gaits of the patient.

The invention discloses a suspension type self-adaptive weight reducing device for rehabilitation training and a rehabilitation training robot. The device comprises a foldable mobile training frame, alower limb training assistive device carrying device, a weight reducing vest, a pulley rope system and a self-adaptive weight reducing box, the box is internally provided with a rope winding device and a self-adaptive gravity following device, the rope winding device is connected with a rope roller through a coupling by means of a servo motor cooperating with a speed reducer, and the reduced gravity is provided for a patient by winding or releasing the rope; the rope is led out by the rope roller and winds around a pulley on the side face of a mounting plate to be connected with the weight reducing vest through a pulley block on the self-adaptive gravity following device, the gravity position is calculated by collecting the joint rotation angle of the patient, a motor of the self-adaptivegravity following device is controlled to drive a lead screw to rotate through the coupling, and a shifting board connected with a lead screw nut drives a movable pulley to do liner motion. In this way, the length of the suspension rope in the training process of the patient is adjusted, gravity following is achieved, and the roughly constant reduce gravity is maintained.

A method includes the steps of blending a first part comprising a low-density fine particulate material additive with a second part comprising original regolith simulant material for producing a lower bulk density blended regolith simulant material having gravity-driven flow properties that resemble those that the original regolith material would have under a reduced gravity of a target extraterrestrial body. The blended regolith simulant material includes one part by volume of original regolith simulant material to N parts by volume of a low-density fine particulate material additive, where N is generally greater than one less than the ratio of the gravitational acceleration on the surface of the earth to the gravitational acceleration on the surface of the target extraterrestrial body.

The invention discloses an electric gravity reduction training frame which comprises a controller, a base support mechanism, a driving mechanism, a gravity reduction force adjusting mechanism, a pulley assembly, a limit protection mechanism and a suspension vest. The base support mechanism comprises a reversed L-type standing support. The driving mechanism comprises a motor. The gravity reduction force adjusting mechanism comprises a tensile force sensor and a tensile force sensor supporting plate. The pulley assembly comprises five pulleys and ropes. The limit protection mechanism comprises an approach switch, a limit board and a blocking piece. The controller is used for inputting control information, detecting information of the tensile force sensor, receiving the trigger information of the approach switch and controlling a motor driver to work. By designing the gravity reduction force adjusting mechanism and the limit protection mechanism, the electric gravity reduction training frame is capable of adjusting reduced gravity while adjusting the suspension height, thereby meeting the requirement for weight bearing capacity of lower limbs when patients at different recovery levels do the training. Double protection of the approach switch limit and the suspension ropes can effectively ensure safety of the patients during training.

The invention discloses a construction method for rooted foundation anchorage, comprising the following steps:

• • precasting a concrete caisson in sections, excavate or bore hole for the caisson sinking, reserving holes for projection of anchor roots in the wall of caisson;
  • cleaning the bottom of the bore hole, and sealing the bottom with concrete; precasting the beam type concrete roots and, within the bore hole, projecting the roots into the earth around the caisson;
  • sealing a concrete cover over the bore hole to form a flat cap, which can be used as the cap of a bridge foundation.

The invention also discloses a construction method for a root-type cast in-situ bored pile with anchor roots, comprising the following steps:

• • placing a reinforcement cage in a bored hole; each guide framework is internally provided with anchor roots;
  • using a vibration extruder to squeeze the roots in the reinforcement cage;
  • using the squeezing head of the vibration extruder to squeeze the anchor roots from top to bottom gradually. The invention greatly improves the traditional foundation structure. The anchor roots increases friction and structural stability greatly, thus making it possible to reduce gravity of the structure.

The invention provides a seismic full waveform and gravity joint inversion method for a crustal three-dimensional density structure, and relates to the technical field of regional crustal three-dimensional structure imaging. The respective advantages of gravity and an earthquake can be fully exerted, non-uniqueness of inversion of a gravity method is reduced, and the density imaging resolution iseffectively increased. The method comprises the steps that wide-frequency seismic waveform data and Bouguer gravity anomaly data are obtained; a crustal three-dimensional V

, V<s> velocity and density initial model is established; and seismic full waveform and gravity joint inversion is conducted by utilizing the Bouguer gravity anomaly data and the wide-frequency seismic waveform data, and thusa crustal three-dimensional density fine structure model is obtained. According to the technical scheme, the seismic full waveform and gravity joint inversion method is suitable for the process of crustal three-dimensional structure imaging.

A novel landing gear and manner belongs to the technical field of aerospace equipment. According to the novel landing gear and manner, a landing assistance unit is arranged on a traditional landing gear to change air pressure under an airplane for reducing gravity influence on the airplane and shortening the taxiing distance of the airplane during take-off, and to reduce the landing speed during landing; meanwhile, a reducing device is arranged to shorten the taxiing distance. Besides, the novel landing gear and manner improves damping tyres to achieve secondary damping and further to achievehigher damping effects.

A test chamber is pivotably suspended in an aircraft, so that the center of gravity of the test chamber always self-actingly orients itself in the direction of the effective residual acceleration. To simulate a selected acceleration greater than 0 g and less than 1 g, the aircraft is flown along a parabolic flight path with a downward vertical acceleration such that the difference between Earth's gravitational acceleration and the aircraft's acceleration corresponds to the selected acceleration to be simulated. To simulate gravitational conditions on Mars, the aircraft is flown with a downward vertical acceleration of about 2/3 g, so that the residual acceleration acting on the test chamber is about 1/3g. The atmospheric conditions, such as the gas composition, pressure and temperature, of Mars can also be established in the test chamber.

The invention discloses a heavy object supporting device, which comprises a hollow base plate, an air storage space is arranged in the center of the hollow base plate, an air intake duct with an integrated structure is provided on the side of the hollow base plate, and the air intake duct is The interior is provided with an air intake through hole that communicates with the air storage space. The center of the upper surface of the hollow base plate is fixed with a mounting plate by bolts. The rod body of the rod is connected to one end inside a threaded sleeve through a threaded structure. The invention supports through the thread structure and aerodynamic force, and at the same time, the thread support has the characteristics of fast movement when moving, and has the characteristics of stable support when supporting, and the device uses multiple air support devices for gas support, which has the ability to reduce gravity The effect on the thread structure is strong in practicability.

The invention relates to a wind power generator of a vertical shaft with gravity and friction reduced by magnetic suspension, which comprises a wind wheel, a generator with a stator, a rotor and a generator shaft, wherein, the permanent stator magnet and the permanent rotor magnet of a magnetic suspension bearing are respectively fixed on the stator and the rotor and arranged top down with the permanent stator magnet under the permanent rotor magnet and the two opposite surfaces have the same polarity. The permanent stator magnet and the permanent rotor magnet of the magnetic suspension bearing are arranged inside the generator with compact structure. The wind power generator has simple integral structure and convenient site installation. The clearance of the upwards running and the downwards running of the generator shaft is less than that of the two opposite surfaces of the permanent stator magnet and the permanent rotor magnet, thus avoiding the contact of the permanent stator magnet and the permanent rotor magnet and protecting the permanent stator magnet and the permanent rotor magnet automatically. After the disappearance of special external force, the generator shaft resets automatically.

Energy efficient satellite maneuvering is described herein. One disclosed example method includes maneuvering a satellite that is in an orbit around a space body so that a principle sensitive axis of the satellite is oriented to an orbit frame plane to reduce gravity gradient torques acting upon the satellite. The orbit frame plane is based on an orbit frame vector.

This invention discloses one compressor motor rotor balance block improve structure in arc shape composed upper bench and down bottom bench. Through reducing bottom rack height, it reduces gravity transfer of balance block to reduce quality and copper materials volume.

The invention discloses a gravity-eliminating three-dimensional adjusting bracket for an off-axis parabolic mirror for a schlieren apparatus. The three-dimensional adjusting bracket comprises a base,a rotating bent arm, a rotating frame and a yaw adjusting mechanism, wherein a U-shaped supporting arm is arranged on the base; the rotating bent arm is connected to the U-shaped supporting arm; a pitching adjusting mechanism used for pitching adjustment of the off-axis parabolic mirror is arranged between the rotating bent arm and the U-shaped supporting arm; the rotating frame is connected to the rotating bent arm through a rotating connecting plate; a rolling adjusting mechanism is arranged between the rotating frame and the rotating bent arm; the off-axis parabolic mirror is connected to the rotating frame; and the yaw adjusting mechanism is used for yaw adjustment of the off-axis parabolic mirror, is arranged in the base and is connected to the U-shaped supporting arm. The gravity-eliminating three-dimensional adjusting bracket for the off-axis parabolic mirror for the schlieren apparatus has the advantages of being simple in structure, high in adjusting precision, capable of effectively reducing gravity influence and high in schlieren imaging quality.

The invention discloses a car tissue box which is convenient for taking tissues, which comprises a box body and a box bottom, the box body and the box bottom form an accommodation space, and the accommodation space is divided into a tissue box and a waste box, and the tissue box and the waste box are respectively Corresponding first and second openings are provided, and the present invention divides the storage space into a tissue box and a waste box, so that the used tissue or other waste can be put into the waste box to avoid affecting environmental sanitation, and through There is a suction cup at the bottom of the box, which can conveniently fix the tissue box on the car, and prevent it from falling easily. When it is difficult to take it out, the lifting plate rises due to the decrease of the tissue in the box due to the decrease in gravity, thereby raising the height of the tissue inside the tissue box, and then it is convenient to take out the tissue, which has high practicability.

Provided is an electrical-heating integrated magnetically-levitated electric stir-fried stove which directly utilizes an alternating current power supply. The stir-fried stove is composed of a metal inner pot, an electric heating layer, an outer pot and a pot handle. Quick electrodes uniformly distributed on the outer pot and quick electrodes of a pot support are connected for supplying electricity. The electric stir-fried stove does not need cable connection. Once the electric stir-fried stove is away from the pot support, the quick electrodes are disconnected. A safety switch cuts off a power supply of the pot support. Vegetables are convenient to take out by moving the pot and the pot is convenient to clean and cook continuously. The electric stir-fried stove is located in the pot support. The pot support is suspended on a magnetically-levitated device between the pot support and a pot stove base. In case of tossing and stir-frying, no noise is generated by avoiding collision between the pot support and the pot stove base. By pressing down or lifting the pot handle or rising the pot, the magnetically-levitated device exerts the effect of reducing gravity. Heating is performed bydirect use of alternating current in order to insulate heat of the outer pot. Therefore, heat loss is prevented. The structure is simplified. Cost is lowered. Heat efficiency is improved.

The invention relates to the field of rail transit transportation, in particular to an embedded rail transit transportation system, which utilizes specific design between a rail beam and a supportingdevice for supporting a carrier unit to obtain the embedded rail transit transportation system with reduced gravity center, lower rail beam and bullet train duty height and reduced noise.