36results about How to "Great power to weight ratio" patented technology

The invention discloses a high voltage resistant permanent magnet polarized two-way proportional electromagnet, belonging to an electromechanical switching mechanism, adopting a special design: using yoke iron and guide sleeve to compose a two-way basin-like pole piece structure, there is permanent magnet mounted in the guide sleeve, there are control coils installed on two sides of the permanent magnet, a polarized magnetic field generated by the permanent magnet is superposed with control magnetic fields generated by the control coils so as to obtain an output force on an armature proportional to input signal, two-way and continuous, thus achieving a good proportional control characteristic; it has low energy consumption, eliminates 'zero'dead zone, has good static and dynamic properties. Therefore, it can be widely applied to proportional valve and servo valve.

The invention adopts a motor and hydraulic motor dual-input differential structure and a two-stage planetary gear pair transmission output mechanism by aiming at the defect of the traditional drive system of the tunnel boring machine. An electromechanical-hydraulic composite type main drive system comprises a power device, a variable-speed transmission system and a power input mechanism, wherein the power device is a dual-input power device and comprises a power input assembly motor and a power input assembly hydraulic motor, and an output end of the hydraulic motor is provided with a braking device. For the power input of the drive system, a manner of motor and hydraulic motor dual-drive differential input is adopted, and two output working conditions can be obtained by changing the drive manners of the motor and the hydraulic motor, so that the tunnel boring machine can be guaranteed in normal work and can be guaranteed to get out of troubles; and compared with a mechanical transmission manner, the hydraulic motor is rapid and stable in driving, can acquire large torque more easily, and further has the advantages of small size, high power-weight ratio, convenience for layout, long service life and the like.

The invention relates to a displacement sliding rotary engine which comprises rotors and stators. The principle of the rotary engine is as follows: a periphery expanded view of the upper end face and the lower end face of a stator cavity is designed into the shape of simple harmonic waves of two wavelengths where one disk rotor is arranged; when a plurality of slides are vertically inserted in the disk rotors, the slides and the disk rotors divide the stator cavity into a plurality of spaces; when the disk rotors rotates, the slides are vertically displaced during the rotation to enable the volumes of the spaces to realize four strokes, thus forming an engine with a higher power-weight ratio.

The invention belongs to the fields of civil engineering and mechanical engineering, and the technical field of shock isolation, and discloses a three-dimensional shock isolation device with enough vertical bearing capacity and anti-swing capacity, and capable of realizing self-balance, and a method. For this, the technical scheme adopted by the invention is as follows: the three-dimensional shockisolation and anti-swing device with self-balance comprises a left-part hydraulic system, a right-part hydraulic system, a balance cylinder and a connection component, wherein the left-part hydraulicsystem comprises an upper-part pin seat, a pin shaft, an upper-part pin head, a piston rod, a hydraulic cylinder body, an exhaust hole, a piston, a damping hole, hydraulic oil, an oil port, a connection guide pipe of the left-part hydraulic system, a bottom pin seat, a lower-part pin head and an upper cover plate of a hydraulic cylinder; and the balance cylinder comprises a balance cylinder piston, a balance cylinder body, a piston rod of the balance cylinder, a left oil port of the balance cylinder, a right oil port of the balance cylinder, an exhaust hole of the balance cylinder, and an upper cover plate of the balance cylinder. The three-dimensional shock isolation and anti-swing device with self-balance, and the method are mainly applied to a design and manufacturing occasion.

The improved pulsatory turbo shaft engine consists of three assemblies, including one independently running air compressor assembly, one compressed air storing assembly and one mixed gas burning work doing assembly. The air compressor assembly comprising coaxially cascade axial air compressors and centrifugal air compressors is driven by one motor or one turbine combination to produce compressed air to be stored in the compressed air storing bin. Under the control of the air distributing device, compressed air is mixed with fuel inside the combustion chamber to burn, and the heat energy acts directly onto the turbine combination, so that the turbine combination rotates in the controlled direction and rotation speed to output kinetic energy. The engine under the control of the air distributing device runs in the cyclic pulsation mode of 'intake-burning to do work', and has comprehensive performance superior to available gas burning engines.

A turboprop engine comprises all structures of a propeller, axial-flow compressors, evaporative combustors, turbines, an exhaust nozzle and the like, and is characterized by further comprising by-pass pipes and internal exhaust valves, and external exhaust valves are mounted or are not mounted in pipes outside the engine and between air inlets and air outlets of the by-pass pipes; and when the engine is started for operation, the internal exhaust valves are opened, the supercharge ratios of the axial-flow compressors are increased and kept unchanged by means of the by-pass pipes and through opening and closing of the internal exhaust valves or the internal exhaust valves and the external exhaust valves, the increased supercharge ratios are not larger than the mechanical strength limit which can be borne by the axial-flow compressors and the turbines, the turbine inlet temperature is kept unchanged, that is, the supercharge ratios and a power weight ratio are increased, the oil consumption rate is reduced, however, the number of stages of the axial-flow compressors and the turbines is not increased, and the turbine inlet temperature is not increased.

The invention relates to a mini elliptic gear engine with a few of components. The complete engine is in the shape of a cylinder and is fixed by housing bolts; a transmitting system consisting of an output shaft, a gear shaft, an up-down duplicate gear and inner gears on rotors is arranged in the engine; the engine cylinder comprises two opposite rotors and an inner wall of the shell; and the ignition system and the gas exchange system comprise a thermal fire head and a air inlet/outlet on the shell. When the elliptic gear of the output shaft, the duplicate gear and the inner gears of the rotors are meshed with each other, the periodic variation of a force arm between the two rotors and the output shaft will occur so as to push the output shaft to rotate by the gas expansion force, thus forming the engine.

A turbine shaft engine comprises axial-flow compressors, evaporative combustors, a turbine, a free turbine, a drive shaft, an exhaust nozzle and the like, and is characterized by further comprising by-pass pipes and internal exhaust valves, and external exhaust valves are mounted or are not mounted in pipes outside the engine and between air inlets and air outlets of the by-pass pipes; and when the engine is started for operation, the internal exhaust valves are opened, the supercharge ratios of the axial-flow compressors are increased and kept unchanged by means of the by-pass pipes and through opening and closing of the internal exhaust valves or the internal exhaust valves and the external exhaust valves, the increased supercharge ratios are not larger than the mechanical strength limit which can be borne by the axial-flow compressors, the turbine and the free turbine, the turbine inlet temperature is kept unchanged, that is, the supercharge ratios and a power weight ratio are increased, the oil consumption rate is reduced, however, the number of stages of the axial-flow compressors and the turbines is not increased, and the turbine inlet temperature is not improved.

The invention discloses a novel array continuous engine. The novel array continuous engine mainly comprises a stator, a rotor, piston pieces, and control pins; the number of the piston pieces can be amultiple of 4 and the piston pieces are distributed in a circumference array, and the piston pieces divide the inner space of the stator and the rotor into a plurality of sealing chambers; the statoris fixed and the rotor rotates directionally, when every two piston pieces are in contact with each other in the set position, positions of the control pins on the piston pieces change under the action of a stator keyway and a rotor keyway, the piston pieces associated with stator motion are changed into association with rotor motion, and the piston pieces associated with the rotor motion are changed into association with stator motion; the piston pieces change positions and rotate forwards alternately, the size of each divided chamber is changed regularly and periodically, and the suction, compression, working and exhausting four-stroke engine is constituted; for each circle of rotation of the rotor, the number of engine working increases with the number of the piston pieces in the squared relationship; and the novel array continuous engine is simple and efficient, and high power density and continuous working can be realized.

The invention provides an alternating-current hydraulic multi-motor high-precision synchronous rotation control device, and belongs to the technical field of alternating-current hydraulic pressure. Analternating-current servo variable-frequency motor is connected with a three-phase alternating-current generator through a coupler to drive the three-phase alternating-current generator to generate three-phase alternating current; the three-phase alternating-current generator is connected with three synchronous shunts through a pipeline, and the pipeline is provided with a leakage compensating device; the three-phase alternating current is divided into three channels of alternating current which are equal to one another completely by the three synchronous shunts; a three-phase alternating-current hydraulic motor A is separately connected with first oil outlets of the three synchronous shunts through pipelines; a three-phase alternating-current hydraulic motor B is separately connected with second oil outlets of the three synchronous shunts through pipelines; and a three-phase alternating-current hydraulic motor C is separately connected with third oil outlets of the three synchronousshunts through pipelines. By the device, a plurality of three-phase alternating-current hydraulic motors can synchronously and continuously rotate, the structure is simple, and shunting in an optionalratio can be realized; and synchronous rotation at different rated torques can be realized by use of the alternating-current hydraulic motors with different displacements, variable-frequency speed regulation can be carried out, and control precision is high.