38results about How to "Large thrust" patented technology

The utility model relates to the field of fireworks, and discloses a high-thrust firework which comprises a launching cylinder, sealing paper is fixedly connected to the top end of the inner wall of the launching cylinder, an ignition assembly is arranged on the upper portion of the sealing paper, and a launching assembly is arranged in the launching cylinder. The launching assembly comprises an effect inner cylinder, the effect inner cylinder is pressed at the bottom end of the inner wall of the launching cylinder, a blocking paper sheet is fixedly connected to the middle section of the inner wall of the effect inner cylinder, and a cavity is formed in the inner wall of the effect inner cylinder; the portion, located above the blocking paper piece, in the effect inner cylinder is sequentially filled with propellant powder, clay knots and acousto-optic powder from bottom to top. According to the utility model, the propellant powder is filled in the lengthened effect inner cylinder, so that the thrust transmission path is shortened, the energy loss caused by a gap between the launching cylinder and the effect inner cylinder is reduced, and under the condition of the same propellant powder amount, larger upward thrust can be generated, and the firework launching height can be increased.

This invention discloses a method for evaluating the multi-dimensional coupling aerodynamic performance of a modal selector valve and an engine, belonging to the field of aero-engines. The steps are as follows: establishing a three-dimensional model of the modal selector valve; simulating the model to obtain its flow performance; establishing a computational model of the modal selector valve and calculating the total pressure after the valve; integrating a high-fidelity characteristic calculation model of the component with a zero-dimensional model of the entire engine; inputting the engine's design point performance parameters and performing design point calculations; given the engine control law and the engine's non-design point operating conditions, performing calculations; determining the convergence of the computational model; obtaining the engine characteristic diagram and aerodynamic performance under arbitrary operating conditions, thus obtaining the aerodynamic performance results considering the overall coupling effect of the modal selector valve and the engine. This invention solves the problems in existing technologies where the calculation accuracy of the overall performance calculation code for variable cycle engines cannot meet the design requirements of variable cycle engines, and the coupling of various engine components is poor.

This utility model belongs to the field of feeding technology, specifically a feeding structure for tableware forming, including a preheating machine body, a box cover rotatably connected to the top of the preheating machine body; a fixed seat is provided on the side wall of the preheating machine body; a motor is fixedly connected to the middle of the fixed seat; a circular plate is fixedly connected to the output end of the motor; multiple switching plates are fixedly connected to the side wall of the circular plate; a processing table is provided on the side wall of the fixed seat; a pair of rotating grooves are opened on the side wall of the switching plates; a baffle is rotatably connected to the middle of the rotating groove; the baffle and the rotating groove are connected by a torsion spring; a feeding plate is fixedly connected to the side wall of the fixed seat; a guide plate is rotatably connected to the end of the feeding plate; the guide plate and the feeding plate are connected by a torsion spring; by using a motor to control multiple switching plates, feeding can be carried out when the raw material is picked up, so that the next batch is connected after one batch is picked up, thereby increasing the feeding continuity and making the feeding faster, thus speeding up the operation of the raw material.

The device is arranged in the combustion chamber, a flame tube is arranged in the combustion chamber, and the device comprises a high-pressure fuel spray pipe and a concentric-square-shaped evaporation pipe; the high-pressure fuel spray pipe penetrates through the side wall of the combustion chamber and is connected with a high-voltage power supply to serve as an anode; the concentric-square-shaped evaporation pipe penetrates through the side wall of the flame tube to serve as a cathode; an anode oil spraying opening of the high-pressure fuel oil spraying pipe and a cathode expanding type fuel oil opening of the concentric-square-shaped evaporation pipe are coaxially arranged, and the end of the anode oil spraying opening extends into the cathode expanding type fuel oil opening. Through high-voltage arc discharge, fuel oil is physically promoted to be split into tiny liquid drops, and macromolecular fuel oil is partially split into micromolecular fuel with higher chemical activity, so that the chemical reaction rate is greatly increased, and rapid and sufficient combustion of the fuel oil is realized.

The utility model relates to the technical field of bank protection sheet piles, in particular to a channel bank protection sheet pile structure which comprises a first sheet pile which is sequentially arranged and connected, the first sheet pile comprises a top plate, two inclined side plates and two bottom plates, the two inclined side plates are symmetrically connected to the two ends of the top plate, and the two bottom plates are connected to the tail ends of the two inclined side plates respectively and are symmetrical to each other. A first groove is formed between the two inclined side plates, the two bottom plates are parallel to the top plate, a second groove is formed between every two adjacent first sheet piles, first connecting pieces are arranged on the sides, facing the second grooves, of the inclined side plates, and second connecting pieces are arranged on the two sides of each second sheet pile. The second sheet piles are connected with the second connecting pieces located on the two sides of the second grooves through the second connecting pieces so that the second sheet piles can correspondingly shield the second grooves. And the second sheet piles bear direct impact of water waves instead of the second grooves, and thrust borne by the first sheet piles is reduced, so that the relative movement trend between the first sheet piles is reduced, the connection firmness between the first sheet piles is improved, and the service life is prolonged.

The utility model discloses an ambient air monitoring device. The environment air monitoring equipment comprises a vertical rod, a foundation is installed at the lower end of the vertical rod, and a display screen is installed on one side of the vertical rod; the vertical rod comprises a first rod body and a second rod body, and a connecting rod is arranged between the first rod body and the second rod body; the foundation comprises a bottom plate fixedly installed at the lower end of the vertical rod. The display screen comprises a display assembly and a frame used for fixing the display assembly. And the frame is rotationally mounted on the connecting rod. According to the environment air monitoring equipment, in strong wind weather, wind blows on the surface of the display screen to generate large thrust on the display screen, the display screen rotates under the action of wind power until the display screen is consistent with the wind direction, the stress on the two sides of the display screen is balanced and keeps consistent with the wind direction, and meanwhile, the display screen is not damaged. The possibility that abrasive paper doped in strong wind impacts on the display screen is smaller, and therefore damage to the display screen is reduced.

The application relates to a double-channel rotating detonation combustion chamber structure with an inlet total pressure adjusting function, which comprises a Tesla valve arranged at the inlet of the rotating detonation combustion chamber, the Tesla valve comprises a shell and a flow channel, the inlet end and the outlet end of the flow channel are respectively provided with pressure adjusting structures, the radial outer side of the flow channel is provided with an injection channel, the injection channel comprises an air outlet channel and a pressurizing channel communicated with the air outlet channel, and the side, away from the pressurizing channel, of the air outlet channel is provided with an opening and closing assembly for opening or closing the air outlet channel, the opening and closing assembly comprises a supporting plate, a plurality of opening and closing doors and a self-locking driving part, and the self-locking driving part is used for synchronously driving the plurality of opening and closing doors to be close to or away from the outlet side of the air outlet channel. The application has the effects that when the rotating detonation combustion chamber is in an air thin belt, the air intake of the air inlet channel is automatically enhanced, the rotating detonation combustion chamber preferentially intakes the air in the air inlet channel, the air supply of the combustion chamber is ensured, and the adaptability and stability of the combustion chamber in different environments are improved.

The application relates to a spline pair pushing device for a commercial vehicle transmission shaft, which comprises a cylinder, the end of the cylinder is fixed with a first pushing plate, the movable shaft end of the cylinder is fixed with a second pushing plate, the first pushing plate and the second pushing plate are both provided with circular arc clamps, the opening directions of the two circular arc clamps are the same, and the connecting line between the centers of the two circular arc clamps is parallel to the movable shaft of the cylinder. The first pushing plate and the second pushing plate are installed at the two ends of the cylinder, the third pushing plate and the fourth pushing plate are installed at the two ends of the mechanical pushing mechanism, and the arc-shaped clamps are arranged on the pushing plates, so that the pushing plates can be clamped on the transmission shaft. When the cylinder acts, the first pushing plate and the second pushing plate push to the two ends, the torsion rod can be manually pulled, the lever action and the gear transmission effect are used, the pushing force of the device is increased, and the transmission shaft and the spline pair are pushed away from each other. The device is convenient to use, time-saving and labor-saving.

The invention provides an adjusting device, method, system and equipment for adjusting states of three red lines of an engine, and relates to the field of airworthiness verification tests of the engine, the adjusting device comprises a swirler, the swirler is arranged in an air inlet channel of the engine, and the swirler is arranged perpendicular to the axis of the engine. The swirler comprises a swirl guide vane which can rotate in the radial direction of the engine, so that the pre-swirl angle of the swirler is adjustable. According to the invention, the thrust of the engine is effectively reduced by controlling the rotation of the rotational flow guide vane, adjusting the pre-rotation angle of the swirler and reducing the flow of the outer culvert airflow of the engine, so that the engine is prevented from generating excessive thrust, and the thrust of the engine does not exceed the red line state too much when the rotating speed of the rotor reaches the red line state; the strength and the service life of key components such as an engine fan, a gas compressor and a turbine are ensured.

This invention discloses a method for producing low-temperature resistant plastic granules for pipes, comprising the following steps: Step 1, cleaning the waste material, and then adding the raw material to a high-speed mixer to obtain a premix; Step 2, adding the premix to a twin-screw extruder and heating it to a molten state for plasticization. This invention relates to the field of plastic granule preparation technology. In this method for producing low-temperature resistant plastic granules for pipes, wastewater is discharged into a circulation tank, driving a turbulence impeller to rotate. While the wastewater is filtered through a grading filter plate, a scraper removes dirt from the surface of the grading filter plate, preventing clogging. Furthermore, the drainage area of ​​the drainage channel can be increased by adjusting the water flow, increasing the water pressure and the impact force on the turbulence impeller, thus increasing the thrust on the scraper and improving the cleaning effect.

The present application relates to the technical field of grading machine, propose a kind of carbon powder special grading machine, including grading cylinder, the outer surface of the grading cylinder is sequentially installed with exhaust port and air inlet from top to bottom, and tangential with the outer surface of the grading cylinder, the front of the air inlet is installed with fan, the top of the grading cylinder is fixedly installed with support cylinder, the side of the support cylinder is installed with feed inlet, the top of the support cylinder is installed with motor.The device can produce up and down vibration when the distribution disc rotates, the material in the "distribution area" is vibrated and scattered, the material with smaller quality is gradually moved to the upper layer, and the material moved to the upper layer can be horizontally moved to the outside of the distribution disc through the support plate and the vertical plate, while the material with larger quality is directly vertically downward through the discharge port, increasing the gap between the two materials, so that the material with smaller quality can be quickly separated, thereby realizing the function of improving the grading efficiency of the device.

The utility model discloses a novel rear coal pushing mechanism of a coal mine top coal caving hydraulic support, which relates to the technical field of coal mining and comprises a top coal caving support, a fixed cylinder is fixedly connected to the bottom position behind the top coal caving support, and pushing jacks are arranged on the left side and the right side in the fixed cylinder. A connecting plate is connected to the power output end of the pushing jack in the height direction, a first pushing plate is fixedly connected to the rear portion of the connecting plate, the connecting plate and the first pushing plate are pushed through the pushing jack in the fixing cylinder, large pushing force can be generated, coal behind the top coal caving support can be effectively pushed forwards, the coal pushing efficiency is improved, and the coal pushing efficiency is improved. And a driving motor rotates to drive a gear to rotate, so that a connecting rod I and a connecting rod II are driven to rotate, and a conical crushing hammer I and a conical crushing hammer II are driven to crush the coal. And therefore, large coal blocks can be crushed into small blocks, subsequent transportation and treatment are facilitated, and meanwhile, the coal can be prevented from blocking the coal pushing channel.

The application relates to a rotating detonation engine and relates to an axisymmetric adjustable nozzle suitable for rotating detonation spiral shock characteristics. The nozzle is composed of a fixed section, an air reservoir, a push rod, a connecting ring, a tractor, a contraction plate, an expansion inner plate, an expansion outer plate, a hook connecting piece and a thermoelectric conversion cover. The fixed section is a frame for the transition from a combustion chamber to a nozzle, and a hinged frame is arranged outside the fixed section for supporting the air reservoir. The air reservoir and the push rod adopt a structure similar to that of an injector. The air reservoir is hinged to the fixed section, and the push rod is hinged to the connecting ring. One end of the tractor is hinged to the connecting ring, and the other end of the tractor is hinged to the expansion outer plate, which is used for dragging the expansion outer plate to move. The expansion inner plate is hinged to the contraction plate. The thermoelectric conversion cover is a conical silicon-germanium alloy cover, which is used for absorbing waste heat of the nozzle and converting the waste heat into electric energy to provide energy for the whole adjustable nozzle. The relative airflow angle in front of the shock wave can be controlled within a proper range under various working conditions in a wide speed range, so that the shock wave angle can be controlled, and the oblique shock energy loss in the rotating detonation engine can be reduced.

This invention relates to an extruder, and more particularly to a high-efficiency automatic dry powder forming hydraulic press driven by a three-axis CNC bidirectional pump servo. The invention provides a high-efficiency automatic dry powder forming hydraulic press driven by a three-axis CNC bidirectional pump servo, comprising a cabinet, a table, a lower power assembly, and an upper power assembly. The table is bolted to the cabinet. The lower power assembly is mounted on the table and provides an upward thrust for dry powder forming. The upper power assembly is mounted on the upper part of the cabinet. The top cylinder of this invention is fixed with a flange, which is directly connected to the table, eliminating the need for large nuts for tightening. This results in a simple structure and easy disassembly. Furthermore, this invention indirectly transmits the extrusion thrust through air cushion blocks, allowing for a shorter stroke of the top cylinder, reducing the overall height of the equipment, and making the structure more compact.

The utility model provides an underwater brushless motor. The underwater brushless motor comprises a stator assembly and a rotor assembly. The motor is characterized in that the stator assembly comprises a shell and a stator winding arranged on the inner side of the shell, and sealant wrapping the stator winding in a sealed mode is arranged in the shell; the rotor assembly comprises a rotor cylinder and a magnetic ring arranged on the side wall of the rotor cylinder in a sealed mode. A plurality of integrally formed paddles are arranged on the inner side of the rotor cylinder; at least two ceramic bearings are connected between the stator assembly and the rotor assembly, and the rotor assembly is rotatably connected with the stator assembly through the ceramic bearings. The motor adopts a non-central-spindle and non-support design, and the blades and the rotor cylinder are directly integrally formed, so that water flow and sundries can freely pass through the interior of the motor and are not easily wound by foreign matters such as silk threads, motor faults caused by jamming are reduced, and the system stability is improved.

The utility model discloses a linear motor, which relates to the technical field of motor manufacture, and comprises a shell, a stator and a mover, the stator comprises a winding, the winding comprises a plurality of coils which are sequentially stacked and nested, the outer circumferential wall of the outermost coil of the coils is abutted against the inner circumferential wall of the shell, and the outer circumferential wall of the outermost coil of the coils is abutted against the inner circumferential wall of the shell. The innermost coil in the coils and the shell are enclosed to form a motion cavity; the mover is located in the movement cavity and is in sliding connection with the inner circumferential wall of the innermost coil in the coils. In the technical scheme of the utility model, the plurality of laminated and nested coils form the winding, and the magnetic fields generated by the plurality of coils jointly act on the rotor after being electrified, so that the rotor can be subjected to the superposition effect of push-pull forces generated by the plurality of coils at the same time, thereby increasing the thrust output by the linear motor.

The utility model provides a riverway salvage device belongs to salvage technical field, including main cable, a plurality of vice cables are fixed on the main cable, the top of a plurality of vice cables all is connected with the floating disc, be equipped with the paddle on the floating disc, still be equipped with the float ball on the vice cable. The utility model solves the existing traditional single direction always in flowing riverway's garbage management mainly relies on manual salvage or large -scale machinery cleaning, but the salvage process of wide riverway is complex, and time -consuming and labor -intensive, and there is low efficiency, high cost, the problem such as operation range is limited.

The utility model provides a kind of silicon core pipe stretching clamp, including the pull rod being equipped with clamping hole, the clamping core being used for inserting the inner diameter of silicon core pipe and being arranged in the front end of pull rod, the clamping cylinder being used for matching the appearance of clamping core and the driving component for driving clamping cylinder clamping silicon core pipe to clamping core are sleeved on pull rod, the clamping core is cylindrical structure, chamfer is equipped in clamping core front side, self-tapping thread is equipped in clamping core middle part surface, fastening bevel opposite to chamfer direction is equipped in clamping core back side, like this when silicon core pipe needs to be stretched, silicon core pipe inner diameter needs to be aligned with the chamfer 71 of clamping core and is pushed into clamping core middle part position, then silicon core pipe is screwed, silicon core pipe is driven by the outer surface self-tapping thread of clamping core and is pushed forward, just can push silicon core pipe forward to fastening bevel, like this can convert part of original design thrust into rotary force, reach the purpose of reducing the large thrust of original design.

The application discloses a terahertz continuous wave wind power blade defect imaging method based on a UAV platform, relates to the technical field of blade defect imaging, and solves the problems that, in the prior art, a crawling robot as a contact type mobile platform is used for detecting a wind power blade, the detection process is complicated, time-consuming and has safety risks, and the method provides an efficient and flexible non-contact detection mode: by using a UAV as an aerial autonomous bearing platform, the contact dependence on the surface of the blade is overcome, the rapid deployment of the detection equipment, long-distance maneuvering and flexible arrival are realized, and the detection operation efficiency and safety of the high-altitude and in-service wind power blade are greatly improved; and a split type terahertz transmission imaging method which can be integrated with the UAV platform is provided, the penetration characteristics of terahertz waves on composite materials are utilized, the defects such as bubbles and delamination in the blade are directly and high-resolution imaged, and the deficiency of the prior art in the detection capability of internal defects is made up.

This invention provides a fiber-reinforced composite ceramic material and its preparation method, as well as a piezoelectric ceramic bilayer and its preparation method. The preparation method of the fiber-reinforced composite ceramic material includes: preparing a predetermined amount of piezoelectric ceramic slurry; doping the piezoelectric ceramic slurry with a fiber-reinforced material to obtain the fiber-reinforced composite ceramic material; wherein the weight ratio of the fiber-reinforced material to the piezoelectric ceramic slurry is 1% to 10%; and the length of the fiber-reinforced material is less than or equal to 15 μm. The fiber-reinforced composite ceramic material of this application is used to prepare a fiber-reinforced composite ceramic film for the driving layer of a piezoelectric ceramic bilayer. By adding fiber-reinforced material to the driving layers on both sides of the piezoelectric ceramic bilayer, the toughness and bending strength of the driving layers on both sides are enhanced.

The utility model discloses a cylinder for needle valve hot runner, including cylinder body, first cylinder barrel, second cylinder barrel, partition, piston and piston gasket. The cylinder for needle valve hot runner is through first cylinder barrel, second cylinder barrel, partition, piston, piston gasket and the cooperation of piston sheet on piston, and first piston cavity and second piston cavity are divided into first cavity, second cavity, third cavity and fourth cavity, are equipped with first gas exchange channel and second gas exchange channel in the piston, first gas exchange channel links first cavity and third cavity, and second gas exchange channel links second cavity and fourth cavity, forms double cylinder structure, realizes double cylinder pushing under the condition that one gas exchange hole admits air, and another gas exchange hole discharges air, obtains greater thrust than ordinary cylinder under the same volume, and the practicality is strong, and production cost is reduced.

The utility model belongs to the technical field of swimming pool cleaning equipment, and discloses a wall-climbing swimming pool machine capable of increasing thrust, which comprises a wall-climbing cleaning robot body, and front walking wheels and rear walking wheels driven by a walking motor are arranged at the bottom of the wall-climbing cleaning robot body; and the tail pushing fan is arranged in the middle of the tail end of the wall-climbing cleaning robot body. When the cleaning robot walks to a wall surface and needs to climb to clean a vertical wall surface, due to the fact that the gravity of the robot is concentrated on the tail portion, the robot raises slightly, the fan on the tail portion is started, thrust of the cleaning robot is increased, and the cleaning robot climbs to clean the wall surface rapidly. Therefore, the tail pushing fan is additionally arranged on the tail portion of the swimming pool machine, advancing of the cleaning robot can be accelerated, additional pushing force can be provided when the cleaning robot climbs the wall, the problems that in the prior art, due to the gravity effect, the power of the swimming pool cleaning robot is insufficient, and the swimming pool cleaning robot cannot climb the wall are effectively solved, and stable cleaning of the side wall of a swimming pool is achieved.

The utility model relates to the technical field of automobiles, and discloses an automobile front bumper upper mask fixing support which comprises an upper mask and a support body, a reinforcing rib is fixedly connected to the back face of the support body, a plurality of threaded through holes are formed in the support body, and a fixing assembly used for fixing the upper mask is arranged on the support body. The front face of the support body is fixedly connected with a positioning column, and the upper mask is provided with a positioning hole matched with the positioning column. According to the fixing support for the upper face cover of the front bumper of the automobile, the support body is fixed to the automobile metal plate, the upper face cover is installed, the positioning columns penetrate through the positioning holes, the upper face cover is pre-installed through the fixing assembly, then the threaded caps are installed on the positioning columns and screwed tightly, and therefore the upper face cover can be installed; when the upper face cover is installed, the threaded cap is detached firstly, then the limiting assembly is removed, and the upper face cover can be detached, so that the stability of the upper face cover is higher after the upper face cover is installed, and the upper face cover can be detached more conveniently.

The invention relates to the technical field of valves, in particular to a power-level two-way hydraulic control main valve which comprises a main valve body, a valve sleeve is arranged in the main valve body, a valve element is arranged in the valve sleeve, the valve element is connected with a two-way hydraulic control device, the two-way hydraulic control device controls the valve element to act, the valve is controlled through high-pressure oil, and the valve is stable in state and good in anti-seismic effect. The action speed of the valve can be controlled, the valve is driven to act through high-pressure oil under the small driving power of the electromagnetic valve, then the driving force of the valve is increased, and the corresponding speed of the valve is increased.

This utility model discloses a high-flow, anti-clogging sewage pump, relating to the field of sewage pump technology. It includes a pump casing, inside which a drive assembly is installed. A first impeller is mounted on the drive assembly. A second impeller is coaxially mounted on the first impeller. The outer blades of the first impeller are arc-shaped, and the angle between the outer blades of the first impeller and the axis of the first impeller is greater than the angle between the outer blades of the second impeller and the axis of the second impeller. In operation, the drive assembly is powered via a cable, causing the first and second impellers to rotate at high speed. The cooperation of the first and second impellers causes sludge to rapidly flow from a low-pressure area to a high-pressure area. The second impeller generates greater thrust on the sludge, resulting in a larger flow rate and head. This bottom-suction, top-discharge direct-supply sewage pump effectively solves the problem of easy clogging.

The utility model discloses a novel ball valve core filter device belongs to ball valve device technical field, including valve body, the valve body inside is provided with ball valve core and valve seat in matching, the top joint of ball valve core has the valve rod inlaying in valve body, be provided with the filter screen of horizontal intercept in ball valve core, the bottom of filter screen is provided with the valve bottom cover of activity fixed on valve body. The utility model discloses a novel ball valve core filter device, does not need to dismount whole valve body to be opened bottom cover fast, realizes the taking out, cleaning or replacement of filter screen, and the maintenance time is greatly shortened, and the system shutdown cost is reduced, can also make filter screen under high pressure water flow impact not easy to dislocation or deformation, can bear greater thrust, ensure long -term stable filtration.

The utility model discloses a stable new energy automobile charging seat with euro standard electronic lock. Adopted technical scheme includes: casing, be located in the motor in casing, with the motor connection's PCB board, the telescopic of being located in the lock rod of casing front end and the emergency unlocking assembly of being located in the one side of casing, lock rack is equipped with in lock rod rear end, the lock confirmation microswitch and the unlocking confirmation microswitch are equipped with on the PCB board, and the motor passes through the telescopic of lock rod drive of speed change gear box assembly. Advantages are as follows: the speed change gear structure assembly design makes the product appearance volume small, and the stability is good.

The application provides a cutting device for fire-fighting clothes production and a cutting process thereof. The cutting device comprises a base, two material receiving mechanisms connected to the upper surface of the base, a cutting mechanism provided outside the two material receiving mechanisms and connected to the upper surface of the base. The material receiving mechanism comprises a first linear module installed on the upper surface of the base, a rotating frame connected to the execution end of the first linear module, a material receiving frame rotatably connected to the rotating frame, and a tensioning assembly connected to the material receiving frame. The cutting mechanism comprises a second linear module installed on the upper surface of the base at both ends, a smoothing assembly connected between the two second linear modules, a third linear module connected to the execution end of the two second linear modules, and a cutting head connected to the execution end of the third linear module. The application can quickly separate the fire-fighting clothes fabric from the corner scraps, so as to improve the cutting efficiency of the fire-fighting clothes.