296results about How to "Strong driving force" patented technology

The invention discloses nano intermetallic compound soldering paste and a preparation method thereof, belonging to the field of material technologies. The nano intermetallic compound soldering paste disclosed by the invention comprises the following materials in mass ratio: 80-90 of nano intermetallic compound particles, 2-8 of dispersant, 2-8 of binder, 2-8 of thinner and 2-8 of soldering flux. The specific method comprises the following steps of: preparing the nano intermetallic compound particles by using a co-precipitation hydrothermal reduction method; mixing the prepared nano intermetallic compound particles with the dispersant, the binder, the thinner and the soldering flux; uniformly dispersing the obtained mixture in an organic solvent by using an ultrasonic oscillation, manual stirring or mechanical stirring method; and volatilizing an excess solvent, so that the nano intermetallic compound soldering paste is prepared. The soldering paste takes nano intermetallic compound particles as solid components, and by using the size effect of nano materials, an interconnection process at a temperature lower than the melting point temperature of a block is realized, thereby avoiding the high-temperature damages to components, avoiding the overreaction of a connection interface, achieving an effect of long-term high-temperature serving, and reducing the packaging cost.

The invention relates to a technology in the internet website field, in particular to the technology that an internet virtual guest hall is established by utilizing a flash plug-in unit technology to simultaneously realize synchronous and asynchronous communication platform on an interface. Various information communication means of the internet are extracted and simplified to be only one virtual space interface for virtual reality operation in order to ensure that the internet communication is visualized. In the invention, instantaneous communication means, video chat rooms, video playing, video BLOG, e-mails, BBS and mail groups are concentrated into a platform. The operation of the internet is simplified, the difficulty and the threshold of the internet communication are lowered to ensure that the internet communication can be used by more people, and the virtual guest hall is used as a real-time communication carrier. The invention replaces the instantaneous communication means, takes the virtual guest hall as a non real-time communication carrier, and replaces the e-mails, podcast and BBS. Various information communication means of the internet are extracted and simplified to be activities and operations performed in a virtual room program, thereby the internet communication is visualized, and more people can enjoy more convenient, more visualized and quicker communication. The invention brings great propelling force for modernized information construction of the society, and all the traditional Internets are innovated by using the room concept in the invention to meet the information communication requirement of all industries. The internet is composed of countless rooms.

The invention discloses a method for preparing low-temperature interconnection / high-temperature serving joints by using nano intermetallic compound particles, which relates to a packaging and assembling interconnected method for electronic devices. The method specifically comprises the following steps: 1, placing nano intermetallic compound soldering paste on a substrate, completing a process of aligning a component to be welded, and exerting a pressure; and 2, placing the system into a reflow oven, and through the stages of preheating, heat preservation, reflowing and cooling, completing the volatilization of organic matters, the uniform sintering of nano intermetallic compound particles and the wetting and interface reaction of a pad. Because nano intermetallic compound particles are applied to the method disclosed by the invention, the great surface activity of the nano particles can provides a powerful driving force for the sintering process thereof, so that the low-temperature connection compatible with the traditional reflow soldering process and far lower than the melting point of a block thereof is realized, and then a joint with good performances is formed, therefore, the low-temperature bonding / high-temperature serving is realized on the premise of low cost, good compatibility with the traditional process, and high production efficiency.

A semiconductor device includes a first pad, a second pad, a first buffer and a second buffer. The first pad is connected to another semiconductor device in a multi-chip package, and the second pad makes a probing connection in a wafer test. The first buffer drives the another semiconductor device connected to the first pad. The second buffer, being driven by the first buffer, drives a load capacitance of a tester connected to the second pad with the driving power greater than the driving power of the first buffer, and has its active / inactive state controlled by a control signal. The semiconductor device can provide the driving power necessary for the wafer test, and drive the another semiconductor device with preventing generation of drive noise and suppressing current consumption in the normal operation of the multi-chip package.

The invention provides a permanent magnet motor with an external spiral rotor and a permanent magnet suspension wheeltrack vehicular access system. The external part of the motor is provided with the external spiral rotor, so that larger output power is obtained with the same external diameter. The permanent magnet motor with the external spiral rotor is applied to efficient drive and efficient power generation recovery brake kinetic energy of a magnetic suspension train, can be used for driving a permanent magnet suspension wheeltrack subway, a permanent magnet suspension vehicle and a four-channel elevated railway passenger car, and is used for elevated permanent magnet suspension towing machine to convey cars or trucksin an enegy saving way. Due to the adoption of the elevated bidirectional four-channel permanent magnet suspension wheeltrack high-speed rail, the constructing cost of a permanent magnet suspension high-speed rail can be lower than that of the existing high-speed rail, and a realistic significance is realized on energy conservation of transportation sector and national energy-saving emission reduction.

The invention discloses a carbon nanometer material preparing method through micro-arc discharging of cathode gas film in the solution, which comprises the following steps: adopting acid, alkaline and salt solution as basic electrolyte; applying DC through area rate of cathode and anode; discharging gas film arc on the cathode; adopting high-purity graphite as cathode and carbon source or adopting high purity graphite with doped catalyst as cathode, carbon source and catalyst; or Fe or Co or Ni or their alloy as cathode; adding soluble organics in the basic electrolyte as carbon source; obtaining ocimene, carbon nanometer ball, carbon nanometer flower, carbon nanometer fiber and carbon nanometer pipe; forming diamond film on the cathode surface.

The invention discloses a sampling device for a continuous online detection system of flue gas emission, which is characterized in that the sampling device is composed of a sampling ash removing mechanism, a controller and a sampling pump. The sampling ash removing mechanism is used to collect sample gas and eliminate powder dust in the gas, and is composed of a main body structure, a back-blowing controller, a back-blowing gas pipe, a sweeping controller, a flue gas sample outlet, a dust removing filter element and a sweeping actuator. The controller is composed of a frequency converter, a computer, a flue gas flow speed sampling interface, a control output interface, a frequency converter output interface and a power supply wire interface, and the computer controls the sampling ash removing mechanism to sample and remove ash and simultaneously controls the sampling speed of the sampling pump in order to realize the sampling synchronization. The sampling pump is composed of a control wire interface, a fan, a flue gas sample detecting inlet and a surplus sample gas outlet. The invention solves the problems of sampling blockage, synchronous sampling and negative pressure sampling, detects and samples the gas in the process of controlling production, and is also applied to detection and sampling for the environmental protection of various gas.

The invention discloses a robot octopus comprising a cylindrical plastic barrel serving as a robot octopus body, wherein claw parts are arranged below the plastic barrel, a claw part action driving mechanism used for driving the claw parts to perform grabbing actions is arranged in the plastic barrel, a sinking and floating mechanism used for driving the robot octopus body to sink and float is arranged in the plastic barrel, four water pumps uniformly distributed along the circumference are fixedly installed on the outer wall of the plastic barrel, the drainage directions of the four water pumps are respectively front, back, left and right, and the four water pumps control the movement direction of the robot octopus; and a control system controls the claw part action driving mechanism, the sinking and floating mechanism and the water pumps to work. The robot octopus disclosed by the invention has reasonable structure and excellent working performance, provides more extensive entertainment items for the youngsters and children, and brings more rich life for families.

The invention discloses an automatic steel rail duplex rust removing machine. The automatic steel rail duplex rust removing machine comprises a rack, engines and wheels connected to the lower portion of the rack, and is characterized in that the two engines are adopted and distributed on steel rails on the two sides respectively, the automatic steel rail duplex rust removing machine further comprises two soft shafts and two steering gears, one ends of the soft shafts are connected with rotating shafts of the engines through couplers, the other ends of the soft shafts are connected with input shafts of the steering gears, output shafts of the steering gears are connected with blade grinding wheels, the rack is fixedly connected with two connecting pieces, vertical adjusting pieces are arranged above the steering gears and elastically connected with the steering gears, connecting rods of the connecting pieces are connected with the vertical adjusting pieces, a transverse spring pull rod is connected between the vertical adjusting pieces of the steel rails on the two sides, and the rack is connected with a drive component. The kinetic energy of the engines is directly transmitted to the blade grinding wheels through the soft shafts, a duplex structure is adopted, synchronous automatic constant-speed rust removing can be carried out on pedal faces of the two steel rails at the same time, and the rust removing quality and efficiency are greatly improved.

A multi-driver transducer having symmetrical magnetic circuits and symmetrical coil circuits, wherein one or more pieces of circular or annular partitions made of a non-magnetic material are used to bond two or more sets of dual magnetic gap and dual coil driver units (01 or 02) into one integrated magnetic core. Four or more coaxial isodiametric annular magnetic gaps are formed between the inner circumferential face or outer circumferential face of one or two tubular magnetic yokes embedded in an open-end tubular thin wall of the bracket and the vertical circumferential face of an upper pole plate and a lower pole plate of the magnetic core, four or more coaxial and isodiametric coils are inserted in the four or more coaxial and isodiametric annular magnetic gaps, and the winding direction, connection manner, and necessary technical features of the coils are governed; thus, the multi-driver transducer having one or more pairs of mutually-repelling magnets, symmetrical magnetic circuits, and symmetrical coil circuits is constituted. Back electromotive force and inductance acquired via induction by the transducer during the working process are mutually offset. The transducer has resistive load features or near-resistive load features, and has super-high sensitivity, high resolution, and high-fidelity quality.

The invention relates to an integrated working machine for a non-excavation pipeline, belonging to the field of engineering machinery. A rigid working head, a supporting machine, a pipe wall tensioning machine, a spiral pusher, a supporting machine and a control box are spliced to form the integrated working machine for the non-excavation pipeline. The working machine provided by the invention isspecial machinery specially used in cleaning silt, cleaning and checking the dragging and pushing operation in a pipe for a pipeline at the state of non-excavation, and can maintain the partial defects of the inner part of the pipe. The working machine has the advantages of small flooring area, low noise, rapid speed, high concealment, good enginnering safety and civilized construction, does not damage to the ground environment, does not influence traffic, the normal life and working order for people, is environmentally-friendly construction machinery, and is good helper for management pesonnel and maintaining personnel for city management; and the machine has the advantages of working efficiency, low construction cost, energy conservation, time and labor conservation, and high automoticity and is simple in operation, is convenient to maintain the pipeline, the service life of a pipe body is prolonged, the operation cost of the pipeline is reduced, and the econimoc benefit is improved.

The invention relates to an integrated gas regulating and safety valve for burners of a modulatable gas heating device. According to the invention, the gas regulating and safety valve comprises a housing (1) with two controllable closing elements, the axes of which are spaced apart from each other and extend one behind the other in series in the direction of gas flow between an inlet channel (2) and an outlet channel (4) of the housing. In the de-energized state, the two closing elements abruptly close the gas regulating and safety valve independently of each other, in each case by means of an associated spring element (7, 12). The first closing element, additionally serving for the modulation of the gas stream, has a drive spindle (15.1), which is formed as a spindle of a stepping motor (15), is surrounded by an excitation winding (16) and has placed on its end a restrictor component (8) and, at a distance from that, the first spring element (7). The second closing element, on the other hand, has a closure component (8) connected to an armature (9), wherein the armature (9) is arranged in a cylindrical cavity (18) and operates against the force of the second spring element (12) acting on the armature (9). This cavity (18) is surrounded by an excitation winding (17) of the armature (9) that is formed as part of an electromagnet.

The invention discloses a binary star eight-wheel lunar vehicle, which comprises a binary star vehicle body structure, a coordination control system, a driving system, a steering system, an eight-wheel arm coordination vertical telescopic moving system, an image pick-up and infrared temperature and humidity detection system, a remote monitoring and control system and a mixed energy source supply system, wherein the stability and the operability of the control system are high, the energy utilization rate is high, the motive power is strong, the maneuverability and the flexibility are high, the environment is protected, the energy is saved, and duplex walking systems are adopted. The binary star eight-wheel lunar vehicle has the advantages that each kind of unique mechanism and control system improves the adaptation capability of the vehicle and can be used as a lunar vehicle walking system; the excellent flexibility is realized, the driving force is strong, and the binary star eight-wheel lunar vehicle can adapt to desert environment; the relative position can be regulated in a certain space through the binary star vehicle body structure, the flexibility of a vehicle body is improved to a great degree, and the binary star eight-wheel lunar vehicle can be applied to a special heavy-weight-class transportation vehicle.

The invention relates to a mechanical transmission type four-wheeled steering and two-wheeled driving wheel-span-variable high-ground-clearance insecticide sprayer. With the adoption of the invention, the high-ground-clearance insecticide sprayer realizes the functions of capability of vertically hoisting a cab, mechanical transmission, four-wheeled steering and adjustable wheel span. The mechanical transmission type four-wheeled steering and two-wheeled driving wheel-span-variable high-ground-clearance insecticide sprayer mainly comprises a steering machine, a right-angle box, a front transverse beam, an insecticide spraying frame hoisting frame, a steering oil cylinder, a rear transverse beam, a driving axle, an oil tank, an insecticide spraying frame, a guardrail, a speed changing box, an engine, an insecticide pump, a girder, a cab vertical hoisting system, a cab, a driving vertical shaft, a special planetary wheel hub reduction gear for a high-ground-clearance machine, a driving wheel, an insecticide tank, an insecticide tank frame, a steering vertical shaft, a guide wheel and a steering arm.

The invention belongs to the technical field of utilizing the solar energy to make wind power and utilizing the wind power to generate electricity, in particular to a solar energy wind power generation tower which solves the problems that the existing solar generating equipment has high cost and low utilization rat and the utilization rate of the wind energy generating equipment has low utilization rate. The solar energy wind power generation tower comprises a thermal-arrest tower and a convection tower; the thermal-arrest tower is internally provided with a gas ascending passage; the outer side of the sunny slope of the gas ascending passage is provided with a double-layer transparent glass and the bottom of the inner side is provided with an absorbing coat; the highest point of the gas ascending passage is communicated with atmosphere; the convection tower is internally provided with a gas descending passage, the bottom of the gas descending passage is provided with a wind turbine, and the top of the gas descending passage is provided with a cold air inlet; the lowest point of the gas ascending passage is communicated with the lowest point of the gas descending passage; the output end of the wind turbine is connected with the input end of a generator. The invention finds a new channel for developing pollution free new energy with low cost, big, middle and small-sized solar power generation and small and middle-sized wind power generation by depending on crude natural conditions.

A sewage and sludge dehydrating device coupling electroosmosis and mechanical pressure filtration is disclosed. The device includes a pressure filtration container (1), an anode plate (2), a cathode plate (3) and a direct current source (4). The anode plate (2) is disposed at the upper part of the pressure filtration container (1). The cathode plate (3) is disposed at the lower part of the pressure filtration container (1). The cathode and anode of the direct current source (4) are respectively electrically connected to the anode plate (2) and the cathode plate (3). The anode plate (2) and the cathode plate (3) are provided with water outlet holes (5) on which filter cloths (5.1) are paved. The cathode plate (3) is connected to a hydraulic system (6) used for driving the cathode plate (3) to move. Through adoption of the device, sludge resistance in an anode layer is slow in increase, dehydration effects are good, and the water content distribution at the sludge thickness direction is uniform.

The invention discloses a drive control system for a pure electric loader and belongs to the technical field of shoveling-transferring engineering mechanical vehicles. A traveling system is connectedto the lower side of a machine body. The machine body is provided with a hydraulic system and further provided with a hydraulic motor and a traveling motor. The hydraulic motor is connected with a hydraulic pump. The hydraulic pump supplies power to the hydraulic system. The traveling motor is connected with a traveling system through a transmission system. The transmission system comprises a fully-automatic speed changing box connected with the hydraulic motor. The output end of the fully-automatic speed changing box is connected with a transfer case. The transfer case is connected with the traveling system and supplies power to the traveling system. According to the drive control system, the traveling system is driven by the traveling motor, and the hydraulic system is driven by the hydraulic motor; compared with mechanical transmission adopted in the prior art, the traveling system is high in transmission efficiency, electrodeless speed changing can be achieved, and gear shifting isachieved easily; the power is great; the hydraulic system can provide stable and efficient powerful driving force; the drive control system is great in universality and convenient to maintain; and defects of an existing loader are overcome.

The invention discloses a bridge plug setting tool. A left end of a pulling rod is fixedly connected with a centre tube, a pushing barrel is sleeved outside the outer wall of the right end of an outer barrel, and the pushing barrel is fixed with the outer barrel through a shearing pin; the outer barrel is sleeved outside the centre tube and is fixedly connected with the centre tube, two ends of the outer barrel and the centre tube are sealed, preset gap is formed between the outer barrel and the centre tube, and at least one liquid inlet is formed in the tube wall of the centre tube; a cylinder barrel is sleeved outside the outer barrel in a sliding mode for forming the sealing state with the outer wall of the outer barrel, a piston is sleeved outside the outer barrel in the cylinder barrel and is fixedly connected with the outer barrel, and pressure transferring holes are correspondingly formed in the outer barrel and each hydraulic cylinder; a sliding switch is mounted in the centre tube in a sliding mode along the axial direction, and a driving device is fixedly connected with the centre tube. The bridge plug setting tool needs no gunpowder as the power, shaft bottom hydraulic pressure is adopted for pushing the tool for setting bridge plug, the structure is simple, the cost is low and the driving force is strong.

The invention discloses a magnetic sucking climbing robot which comprises magnetic wheels, a driving vehicle body and a steering vehicle body, wherein the driving vehicle comprises a driving vehicle main body and a power driving device; two magnetic wheels are mounted on the driving vehicle main body, are driven by the power driving device and function as rear driving wheels; the steering vehiclebody comprises a steering vehicle main body and a steering device; the two magnetic wheels are mounted on the steering vehicle main body, are used for controlling steering through a steering device and are used as front steering wheels; the driving vehicle main body is connected with the steering vehicle main body through a suspension gear with a specific rotation freedom degree. As a permanent magnet is creatively combined with wheels, stable sucking of wheels is achieved, and possibility of normal operation of an image transmission component, a mechanical arm component and an ultrasonic flawdetection component behind can be created.

Provided is a sealed secondary battery having a current interrupt mechanism with a high heat resistance that prevents fusion of the current collecting plate by the Joule heat generated during high-rate charge and discharged. A current interrupt mechanism 80 of a sealed secondary battery 10 provided in accordance with the present invention is configured such that when the internal pressure inside a battery case 12 rises above the predetermined level, a current interrupt valve 30 is deformed by the internal pressure in a direction of separating from a rectangular plate-shaped current collecting plate 72 and the current collecting plate breaks in the portion of an annular groove 79 of a central thin section 74 of the current collecting plate.

According to the present invention there is provided a Centerless Robotic Platform (CRP) system adapted for mounting on a surface of a body. The surface body extends along a longitudinal axis and having an essentially closed cross-sectional contour. The CRP system comprises at least a first drive unit comprising one or more rolling member, at least one link unit comprising one or more rolling member, and a biasing arrangement. The drive unit and the one or more link units are adapted for attachment to one another. When mounted onto the body, the biasing arrangement is adapted to bias the rolling members to engage the surface of the body. The biasing arrangement is adapted to urge the rolling members to dynamically follow the contour so as to maintain in surface contact with the surface during rotation of the system about the body

The invention discloses a jellyfish-like underwater robot based on a mollusk driver, comprising a sealed cabin at the upper end, a fixing device at the lower end, a control unit and a mollusk propelling unit, wherein the sealed cabin is fixedly connected with the fixing device; the mollusk propelling unit comprises mollusk tentacles and a pipeline connected with the mollusk tentacles; the mollusk tentacles are uniformly and fixedly mounted around the upper end of the fixing device so as to serve as a flexible driver of the whole robot; and the control unit is used for supplying or cutting compressive fluid to the mollusk tentacles through the pipeline to enable single or multiple mollusk tentacles to generate deformation, so that the whole robot turns or moves. According to the jellyfish-like underwater robot disclosed by the invention, the extension and constriction of jellyfish tentacles are simulated by the mollusk tentacles, and the mollusk tentacles are large in deformation amplitude, strong in driving force, high in efficiency and good in application prospect.

The invention provides a mechanical transmission type four-wheel-steering four-wheel-driven variable-tread high-ground-clearance insecticide sprayer which is mainly formed by an engine, a gearbox, a transfer case, a driving axle, a right angle box, a steering vertical shaft, a special mechanical high-ground-clearance planetary hub reductor, a liquid pump, a liquid tank, a tank rack and a spraying frame. The high-ground-clearance insecticide sprayer achieves mechanical transmission. The mechanical transmission type four-wheel-steering four-wheel-driven variable-tread high-ground-clearance insecticide sprayer has the most obvious advantages that mechanical transmission is stable and reliable, a power utilization rate of the engine is high, the mechanical transmission type four-wheel-steering four-wheel-driven variable-tread high-ground-clearance insecticide sprayer is convenient to maintain, has high passing performance in severe environments, adopts a four-wheel-steering and four-wheel-driven structure so as to have a strong driving force, has a small turning radius and is flexible to steer, and further a variable tread is adaptable to requirements of different ridge distances, and thus, the insecticide sprayer has very high operation efficiency.

The invention discloses an electric vehicle wheel side driving system and a driving method. The electric vehicle wheel side driving system comprises a deceleration driving system disposed in a wheel hub and a direct driving system fixedly connected with the wheel hub and directly driving a wheel. The electric vehicle wheel side driving method is realized via the electric vehicle wheel side driving system. By the use of the electric vehicle wheel side driving system and the driving method, motors of various systems can be guaranteed to work within the rated power and motor output efficiency can be ensured; demands for normal power can be met and overall vehicle weight can be reduced; large transmission ratio is achieved and high mechanical transmission efficiency is provided; and the electric vehicle wheel side driving system possesses compact structure, facilitates spatial arrangements and meets requirements for light weight of the electric vehicle.

The invention relates to the technical field of heat dissipation, in particular to a piezoelectric fan, a radiator and electronic equipment. The piezoelectric fan comprises a fan body and piezoelectric element, wherein an generating cavity and a flow spraying cavity are formed in the fan body, the generating cavity communicates with the flow spraying cavity through a flow spraying opening, a flowinlet and a flow outlet are formed in the fan body, and the flow inlet and the flow outlet communicate with the flow spraying cavity. The flow outlet is arranged corresponding to the flow spraying opening, and fluid discharged by the generating cavity forms a jet flow through the flow spraying opening, and the jet flow penetrates through the flow spraying cavity and is sprayed out of the fan bodythrough the flow outlet. The piezoelectric element is arranged in the fan body, and a piezoelectric element vibrates to change the volume of the generating cavity. According to the piezoelectric fan,the radiator and the electronic equipment, the technical problems of unstable output air flow, low service life, and mere local circulation of air in the prior art are solved.

The invention relates to an automatic production line and particularly relates to an industrial production line combining a robot and numerical control equipment. A robot-assisted numerical control full-automatic production line comprises a numerical control lathe for realizing numerical control turning, a robot for realizing automatic loading / unloading for the numerical control lathe and a bin system for storing to-be-processed workpieces and processed workpieces, wherein the robot is fixedly connected with the numerical control lathe; and the bin system is fixedly connected with the numerical control lathe and positioned in a clamping space of the robot. The robot-assisted numerical control full-automatic production line is used for realizing full-automatic numerical control processing operation; the robot grabs a workpiece from the bin system and places the workpiece on the numerical control lathe for turning; after the turning, the robot places the workpiece in the bin system; and thus, an unmanned processing process is realized, the production process is safe and reliable, and the automation degree is high.

The invention relates to a touch display panel and a touch display device thereof. The touch display panel adds a touch drive circuit at one side of a touch drive electrode far away from a driver IV, the touch drive electrode can be simultaneously driven by driver IC and the touch drive circuit at two sides of an electrode extension direction, thereby realizing the dual-side driving and providing stronger driving force of the touch drive electrode. On the one hand, the public electrode potential uniformity on the touch drive electrode is guaranteed in the display stage, and on the other hand, the more uniformity of the semaphore on the touch drive electrode is guaranteed at the touch stage, and the consistency of the entire touch performance is guaranteed.

The invention relates to a hydraulic ejection system for an unmanned aerial vehicle. The hydraulic ejection system comprises a hydraulic driving part, a hydraulic energy storage part, a hydraulic starting part, a hydraulic buffering part, a hydraulic brake part, a hydraulic oil tank and a hydraulic pipeline for being connected between the hydraulic drive part, the hydraulic energy storage part, the hydraulic starting part, the hydraulic buffering part, the hydraulic braking part and the hydraulic oil tank, wherein the hydraulic driving part comprises a motor, a variable capacity pump, hydraulic motors and an electro-hydraulic directional control valve 18; the energy storage part comprises energy accumulators, an electromagnetic relief valve and a pressure gage; the hydraulic starting part comprises a starting hydraulic cylinder and an electro-hydraulic directional control valve 6; the hydraulic cushioning part comprises a cushioning hydraulic cylinder and an electro-hydraulic directional control valve 7; the hydraulic braking part comprises a braking hydraulic cylinder and an electro-hydraulic directional control valve 5; the energy accumulators are connected with the hydraulic motors in series, and besides, a control valve group is connected to the hydraulic pipeline between the energy accumulators and the hydraulic motors in series; besides, a brake valve group and a prefill valve are arranged on the hydraulic motors; besides, the control valve group is connected with the brake valve group. The hydraulic ejection system disclosed by the invention is high in drive force, rapid in cushioning and braking, stable and reliable in properties, and adaptive to operating requirements for different take-off weights and different take-off speeds of different unmanned aerial vehicles.