168 results about "Thrust bearing" patented technology

The utility model relates to canning processing large -scale spraying equipment technical field, and disclose a kind of canning processing large -scale spraying equipment, including paint spraying support pedestal, the surface of paint spraying support pedestal is fixedly connected with plane thrust bearing ring, the upper surface of plane thrust bearing ring is fixedly connected with can body positioning rotary disc, the can body positioning rotary disc adopts disc structure, the upper surface of paint spraying support pedestal is fixedly connected with arcuate frame, the outer surface of arcuate frame is provided with first tooth groove, the outer surface of arcuate frame is sleeved with square frame, the inner side surface of square frame is provided with first gear and support wheel, by adopting arcuate frame structure, can make paint spraying assembly around arcuate frame place mobile paint spraying, and bottom is provided with can body positioning rotary disc as the support platform of can body, and can body is set in can body positioning rotary disc place and rotates paint spraying, can be even and not waste paint spraying, can body and can bottom can be together paint spraying, paint spraying comprehensive efficiency is high.

The present invention provides a pump device that can prevent the air venting passage from being blocked by the thrust bearing. [Solution] The pump device 1 has a thrust bearing 13 positioned opposite the second radial bearing 12 at one end L1 in the axial direction of the rotor member 51. The rotor member 51 is provided with a through-hole 7 extending axially between the magnet 52 and the rotating shaft 10. The through-hole 7 communicates with the pump chamber 30 via a one-sided opening 73 that opens at the end face of one side L1 in the axial direction of the rotor member 51. The one-sided opening 73 comprises an inner circumferential portion 73A of the opening that is closed by the thrust bearing 13, and an outer circumferential portion 73B of the opening that opens on the outer side of the outer edge of the thrust bearing 13.

This utility model belongs to the field of transmission technology and relates to a differential coupling speed regulation device for a cone-disc continuously variable transmission (CVT). It includes a first-shaft cone-disc unit, a second-shaft cone-disc unit, an annular transmission component, and a speed regulation system. The speed regulation system consists of a first speed regulation power source, a second speed regulation power source, a rotary thrust unit, and a differential coupling unit. The first speed regulation power source serves as the main driving force source, and the rotary thrust unit converts relative rotational motion into axial movement to drive the moving cone disc and achieve speed regulation. This utility model couples the outputs of the two power sources through the differential coupling unit, reducing the power requirement of the second speed regulation power source and avoiding the drawbacks of needing to adapt the second speed regulation power source to high power. Furthermore, speed regulation is achieved through speed coupling and dynamic coordination of the speed regulation system, avoiding various problems associated with using high-speed thrust bearings.

The present application relates to the field of uranium enrichment equipment, and more particularly to a small electric drive device suitable for vacuum valves. The device comprises: the left and right ends and the lower part of the frame are provided with openings, the screw rod is limited in movement stroke by the left and right top wires, the speed reducer is connected with the motor and the gear set respectively, the gear set is engaged with the screw rod after reversing; the yoke sleeve is coaxially arranged with the screw rod and is limited by the left shaft shoulder, the yoke sleeve is connected with the screw rod through the sliding block, the yoke sleeve is coaxially sleeved on the screw rod in sequence with the thrust bearing, the disc spring and the limiting nut, and is fixed through the rightmost nut; the limiting nut and the bushing are fixed with the frame through the positioning screw; the left end of the frame is sealed through the stop end cover I, the bearing I and the bearing II are fixed with the frame, the right end of the frame is sealed through the stop end cover II, the axial limitation of the right top wire is realized after the locking of the stop end cover II, and the upper part of the frame is visible; the pointer is fixed on the yoke sleeve. The present application has small structure and stronger applicability.

The present application belongs to the technical field of transmission equipment, and particularly relates to a kind of ring rolling machine taper roller transmission structure and method, including taper roller, reduction motor, transmission connection part, taper roller, reduction motor is installed on frame, the spindle of reduction motor is hollow structure, one end of taper roller installs extension section, the spindle of reduction motor is coaxial with the extension section of taper roller through shaft sleeve and is connected by transmission connection part to realize transmission connection;During transmission, two thrust bearings bear the axial force of taper roller, cylindrical bearing supports the extension section of taper roller in radial direction, effectively avoids the axial movement and radial swing of taper roller extension section, ensures accurate torque transmission, transmission is stable;Meanwhile, the connection mode of each component is detachable adaptation, and the maintenance and replacement of single component are facilitated, further reduce equipment failure rate, prolong the overall service life of transmission structure.

This utility model belongs to the technical field of vertical mills and discloses a vertical mill drive system. The vertical mill drive system includes a housing, a main shaft, a stator assembly, a permanent magnet rotor, a transmission assembly, a thrust bearing, and a high-pressure pipeline. The housing has a motor cavity and a mounting cavity. The housing is provided with a lubrication channel communicating with the mounting cavity. The main shaft passes through the motor cavity, and one end of the main shaft extends out of the mounting cavity and is used to connect with the grinding disc. The stator assembly is installed on the inner wall of the motor cavity. The permanent magnet rotor is located inside the stator assembly and is sleeved on the main shaft. The transmission assembly is installed in the motor cavity, and the power input end of the transmission assembly is connected to the permanent magnet rotor, and the power output end is connected to the main shaft. The thrust bearing is sleeved on the main shaft and abuts against the grinding disc. The high-pressure pipeline is installed in the mounting cavity and communicates with the lubrication channel. The high-pressure pipeline is used to spray lubricating oil toward the thrust bearing. This vertical mill drive system has a simple structure, low installation and debugging difficulty, and is very convenient for operation and maintenance.

The present application relates to the technical field of ground test of space liquid engine, and particularly relates to a large-thrust inclined test bench based on flexible leaf spring support and an in-situ calibration method. The test bench comprises a fixed frame platform arranged obliquely and a movable frame supported in the fixed frame gantry through multiple sets of leaf spring assemblies; the leaf spring assemblies constrain the movable frame to move only along the thrust axis direction; the front end of the movable frame is connected to a force measuring assembly through a transition frame, and the rear end is installed with a liquid engine through a adapter frame; the fixed frame is provided with an in-situ calibration assembly and a pre-tightening force assembly acting on the movable frame, and a safety limiting assembly. The in-situ calibration method applies a standard force to the movable frame through the calibration assembly, and simultaneously records the output of the force measuring assembly to establish a calibration relationship. The present application optimizes the super-large thrust bearing path through the oblique leaf spring support structure, has single-degree-of-freedom guiding and high lateral stiffness, and realizes high-precision, high-dynamic and high-reliability measurement of the thrust of the hundred-ton liquid rocket engine under real inclined working conditions in combination with in-situ hydraulic calibration.

The electromechanical integrated parallel composite flexible disc type axial harmonic reducer consists of a moving part composed of a composite flexible disc (18, 35, 80, 120) that integrates a flexible thrust bearing low-speed moving ring raceway and a planar spur gear on both sides and has an integrated variable stiffness connecting part, and two rolling wave generators (12, 21, 41, 54, 78, 82, 119, 126) of the same structural size but with axial concavity and convexity perpendicular to each other in the circumferential direction, which are fixed on the motor rotor (8, 48, 87, 132). The stationary part is composed of two rigid end caps (3, 42, 63, 103) that are fixed to the planar spur bevel gear (16, 19, 39, 53, 79, 81, 118, 124) and the motor stator (5, 50, 65, 105). Due to the circumferential orthogonal axial symmetrical deformation of the shared composite flexible disk (18, 35, 80, 120), half of the motor input torque is generated by two axial harmonic drive components with the same structural parameters (12, 17, 18, 16 and 21, 20, 18, 19; 41, 49, 35, 39 and 54, 52, 35, 53; 69, 76, 78, 80, 79 and 86, 85, 82, 80, 81; 113, 114, 119, 120, 118 and 128, 127). The components 126, 120, and 124 are connected in parallel for synchronous amplification. After being superimposed by the integrated variable stiffness connector on the outer or inner circle of the composite flexible disk (18, 35, 80, 120), the output is sent to the rotating shell (15, 75, 117) or the spindle (31, 32). The total deformation of the flexible components is reduced due to the shared composite flexible disk (18, 35, 80, 120) and the integrated variable stiffness connector. The elastic deformation force cancels each other out in the moving parts and will not be transmitted to the support bearing, thus reducing frictional power consumption.

Torque converter (10) which includes: a rotation axis (A); a stator assembly (26, 226) comprising a side plate (36, 236) with a first radial surface and a thickness (t); a turbine (20) containing a plurality of blades (79); an impeller (18) comprising a plurality of blades (81) and an impeller housing (16) with a second radial surface facing the first radial surface of the side plate (36, 236); a hydrodynamic thrust bearing (50, 250) arranged between the stator side plate (36, 236) and the impeller housing (16) and comprising: a pressure surface (52, 252) facing the first radial surface or the second radial surface, with a fluid channel in between; a bearing surface (54, 254) which is opposite the pressure surface (52, 252) and faces the other radial surface, the first radial surface or the second radial surface; an inner circumferential surface (56, 256) that defines an opening concentric to the axis of rotation (A); an outer circumferential surface (58, 258); and an axial retaining means (60) for attachment to the stator side plate (26, 236) or the impeller (18), comprising at least two elastic tongues (60), each tongue comprising: a bendable section (262); a lockable section (264); and an axial section (266) with a first width (w2) connecting the bendable section (262) and the lockable section (264), wherein the bendable section (264) also serves as a lockable section (264), and wherein the axial section (266) with a width (w2) connects the bendable section (264) to the radial surface (254).

The application relates to a bearing lubrication performance measuring device under outer ring driving, and belongs to the technical field of lubrication experiments. The device comprises an operation platform, a driving device, a loading device, a testing device and a torque acquisition system. The driving device is connected with the testing device through a shaft coupling, drives the testing sleeve to rotate to simulate the driving working condition of the bearing outer ring; the loading device applies and measures the load on the testing bearing through a thrust bearing, a pressure sensor and a butterfly spring; the torque acquisition system acquires torque data in the testing process in real time. The testing main shaft and the loading shaft system are internally provided with oil channels, lubricant can be supplemented in time, and the butterfly spring in the supporting sleeve plays the roles of buffering and keeping the load stable. The device can truly simulate the high-speed rotating working condition of the bearing outer ring, synchronously measure torque, load and rotating speed parameters, the platform level can be adjusted through adjusting screws, the bearing pre-tightening force is adjustable, the testing bearing is convenient to replace, and the device is suitable for the testing and evaluation of the lubrication performance of space bearings.

A propeller excitation measurement system and method taking into account the influence of shafting bending and torsional vibration belong to the field of ship propulsion devices. It includes a propeller, a sealing device, a propeller bearing, a bearing dynamic excitation force sensor, a torque speed instrument rotor, a torque speed instrument stator, a front / rear stern bearing, a diaphragm coupling, a thrust bearing, a counterweight balance disc, a front / rear intermediate bearing, a motor coupling, a driving motor, a frequency conversion controller, a data analysis and acquisition instrument, a test bench base, a rotating shaft, an eddy current displacement sensor, an optical electric speed sensor and a propeller mounting shaft sleeve. It aims to overcome the technical bottleneck of the existing propeller excitation direct measurement method, that is, the difficulty in arranging underwater sensors, high cost and influence on shafting transmission performance. At the same time, it solves the problem that the existing indirect measurement method cannot eliminate mechanical structure excitation interference and the measurement precision is insufficient, so as to realize a propeller hydrodynamic excitation measurement method which can take into account the influence of shafting bending and torsional vibration, has low cost and high precision.

The utility model provides a button cell sealing machine, including casing, middle part mounting panel, top mounting panel, lift drive component, guide component, punch upper die and punch lower die, lift drive component includes rotation drive part, drive screw, bearing installation shell, thrust bearing, tapered roller bearing, lift platform and connecting block, the inside and outside both sides of tapered roller bearing respectively with upper screw outer end surface, bearing installation cavity inner wall contact. The advantage of this design is that: in the process of rotating, thrust bearing and tapered roller bearing bear axial load, make middle part convex ring not to move and can rotate smoothly in vertical direction, and tapered roller bearing also bears radial load, make the axis not to deviate when upper screw rotates, thereby ensure the accuracy of lift platform ascending distance, and ensure that lift platform is always in horizontal position, improve the effect of button cell sealing, improve the qualified rate.

This invention belongs to the field of rotary table technology, specifically disclosing a large-angle, high-precision macro-micro composite rotary table and its control method. The table includes a macro rotation part, a micro rotation part, and an angle measurement part. The macro rotation part includes a base, a connecting plate, a load-bearing plate, a macro rotation motor, and a thrust bearing; the connecting plate is fixed to the base with screws. The micro rotation part includes a micro rotation rotary table base, a micro rotation driver, a circular grating ruler, and a micro rotation rotary table; the micro rotation rotary table base is coaxially fixed to the load-bearing plate with screws. The angle measurement part includes a high-precision angle sensor, a sensor fixing plate, an XY-axis manual displacement platform, bracket a, and bracket b. This invention, employing the above-mentioned large-angle, high-precision macro-micro composite rotary table and its control method, achieves rapid positioning at large angles and high-precision fine-tuning at the micro-nano arc level, with a simple structure, fast response, low cost, and low eddy current loss.

A turbofan engine for an aircraft includes a fan, one or more sensors for providing sensor data indicative of an excitation load, and a fan actuation system. The fan has a plurality of fan blades coupled to a fan shaft having one or more fan bearings. The fan actuation system is disposed within a fan hub and includes one or more actuators for rotating the fan blades about the pitch axis and one or more radial thrust bearings. The fan actuation system is characterized by a fan actuation system length envelope in a range from 8.5 to 24 and given byNFB×DFTLAXIAL×(RTBNFB).NFB is a number of the fan blades, DFT is a fan tip diameter of the fan blades, RTB is a thrust bearing radius of the radial thrust bearings, and LAXIAL is an axial length from a fan hub tip to the fan bearings.

An upper bearing cap for a suspension thrust bearing device includes a radial wall having an upper surface configured to face a retainer seat and an opposite lower surface configured to contact a rolling-element bearing, an axial outer annular skirt extending axially downwards from a radial outer edge of the radial wall and having an axial outer surface and an opposite axially inner surface, and at least one hook section comprising at least one hook configured to interact with a further component of the suspension thrust bearing device. A radially outer portion of the radial wall has a first thickness, and the axial outer annular skirt has a second thickness, and at least a portion of the at least one hook section has a third thickness greater than the first thickness and greater than the second thickness.

The present invention addresses the problem of providing a measurement device for a ship, and a measurement method for a ship, that enable stable calculation of thrust. The problem is solved by detecting, by a detection device, deformation in a structure fixed to a hull of a ship, the detection device detecting deformation due to thrust in a structure of a propulsion engine that is fixed to the hull 1 of the ship and that rotationally drives an output shaft and / or a structure of a thrust bearing. Preferably, the thrust is thrust of a propeller, and the thrust bearing is a bearing that rotatably supports a shaft connecting the output shaft and the propeller.

This invention relates to the field of radial thrust bearing technology, specifically a radial thrust bearing comprising an inner ring, an outer ring, a cage, and balls, and a circulation mechanism. The inner ring is fitted inside the outer ring, and the balls are rolled and embedded between the inner and outer rings. The cage is installed between the inner and outer rings, with the balls located on the cage. The circulation mechanism is installed on both sides of the outer ring. This invention solves the problem that existing bearings still generate high internal temperatures at high speeds. High temperatures reduce the viscosity of the lubricating oil, leading to a thinner oil film, increased friction, and ultimately, accelerated bearing temperature rise. Excessive bearing operating temperature can cause the bearing to seize due to thermal stress. This invention achieves uniform heat transfer from the lubricating oil at high speeds, preventing the bearing from seizing due to excessive operating temperature.

The application relates to an anti-impact supporting mechanism, in particular to an electric cylinder supporting mechanism and electric cylinder, which comprises an inner ring, an outer ring, a rolling pin and retainer assembly, a first thrust cylindrical roller assembly, a second thrust cylindrical roller assembly, a first thrust bearing retainer, a second thrust bearing retainer, a bearing sleeve and an end sleeve. The outer ring is arranged outside the inner ring, the rolling pin and retainer assembly are arranged between the inner ring and the outer ring, the first thrust cylindrical roller assembly and the second thrust cylindrical roller assembly are sleeved on the inner ring, the bearing sleeve is sleeved on the outer ring, one part of the end sleeve is connected to the inner wall of the bearing sleeve, and the other part of the end sleeve extends out of the bearing sleeve. The application can bear radial force and bidirectional axial force, and can meet the special requirements of the transmission shaft and the lead screw when being separated and combined.

A radial eccentric load working condition simulation and measurement device for a permanent magnet thrust bearing belongs to the technical field of permanent magnet thrust bearing detection. A three-way force sensor in the device is connected with a radial sliding platform, a stator base is fixed on the radial sliding platform, the stator base is fixedly connected with a permanent magnet stator, and a permanent magnet rotor is in contact with the permanent magnet stator. The radial sliding platform is fixed on a working platform to drive the permanent magnet stator to move radially. The radial force is measured by the three-way force sensor under the eccentric load condition, and the radial offset distance is recorded by the radial sliding platform. The permanent magnet rotor is connected with a rotor main shaft, both ends of the rotor main shaft are in contact with sliding bearings, and the sliding bearings are fixedly connected with a sliding bearing support. An electric cylinder is in contact with the rotor main shaft in the initial state and is in contact with the rotor main shaft in the working state. The device can simulate the radial eccentric load working condition of the permanent magnet bearing, simultaneously realize the loading of the axial force under the radial eccentric load working condition, measure the axial force and the radial force through the sensor, and quantify the relationship between the axial bearing capacity and the radial eccentric load of the permanent magnet thrust bearing.

This invention relates to a high-pressure module for a 660MW air turbine with high temperature and high pressure and single reheat operation. The invention addresses the problems of low intake efficiency, poor injection adjustment accuracy, axial thrust imbalance, and insufficient operational reliability in existing high-pressure modules. It employs a symmetrical dual-flow structure, with the cylinder and rotor of the flow section symmetrically arranged to achieve axial thrust self-balancing, significantly reducing thrust bearing load and improving unit operational stability and safety. The high-pressure inner cylinder uses a tangential volute + dual-intake structure, combined with a dual-flow + single injection integrated structure. The volute intake significantly reduces intake eddies and total pressure loss, improving flow efficiency. The high-pressure outer cylinder is equipped with a two-stage independent injection system, enabling precise staged injection to adapt to varying flow and pressure requirements. This invention belongs to the field of air turbine technology.

This invention belongs to the technical field of cone crushers, specifically relating to a cone crusher device and control system for dynamically adjusting crushing force. It mainly includes a frame, vibration sensor, damping spring, spring support frame, first drive rack, moving cone assembly, support assembly, vibrator assembly, counterweight, second drive rack, horizontal shaft, pinion, gear, thrust bearing lower plate, key, and thrust bearing upper plate. This invention changes the position of the counterweight via the second drive rack, thereby altering the center of gravity of the vibrator assembly and adjusting the crushing force. Simultaneously, the first drive rack changes the position of the foundation relative to the frame, thus adjusting the magnitude of external forces, improving the vibration level of the equipment, and reducing the impact on the installation foundation.

This invention relates to a vibration isolation device and operating method for a thrust bearing of a submersible under extreme hydrostatic loads, belonging to the technical field of marine propulsion devices. The device consists of two identical semi-circular ring modules assembled into a complete ring. Each module includes a multi-layered stack of semi-circular metal ring plates and clamping bolts. Two rings of bolt holes are circumferentially formed on the metal ring plate stacks, which are rigidly connected to the thrust bearing housing flange and the thrust bearing base flange via hydraulic clamping bolts. The plane of the metal ring plates is perpendicular to the axis of the shaft system. The high stiffness within the metal ring plates provides lateral stability support, while the low stiffness outside the plane provides longitudinal elastic vibration isolation. All metal parts are made of titanium alloy or duplex stainless steel, which is resistant to seawater corrosion and does not exhibit stiffening under deep-sea pressure. The operating method of the device is also disclosed, highlighting its advantages of excellent vibration isolation performance, stable lateral support, high installation accuracy, maintenance-free operation, and good maintainability.

The application discloses a novel downhole hot melting cutting tool and relates to the technical field of well drilling tools.The downhole hot melting cutting tool comprises an anchoring mechanism, a righting mechanism and a jetting mechanism.The anchoring mechanism is composed of an anchoring outer cylinder, an anchoring piston seat, an anchoring locking block, an anchoring long connecting rod, an anchoring short connecting rod and a spring.The righting mechanism is composed of a liquid guide column, a righting piston, a righting outer cylinder, a righting limiting cylinder, a spoke connecting cylinder and spokes.The jetting mechanism is composed of an igniter, a heat insulation ring, a jetting outer cylinder, a nozzle bolt, a nozzle and a thrust bearing.The hot melting cutting tool is provided, the rotating power of the nozzle of which is provided by a jet flow, the structure is simpler than that of a mechanical rotating cutting structure, a hot melting metal jet flow is used as a cutter to cut a metal pipeline, the cutting efficiency is high, and the abrasion problem caused by a traditional cutting cutter is avoided.

The application discloses a kind of plate strip hot rolling mill electric screwdown anti-rotation devices, including rolling mill housing, thrust bearing seat and upper roll bearing seat, upper roll bearing seat is set in the lower side of thrust bearing seat, and protective cover is arranged between thrust bearing seat and rolling mill housing, and the screwdown screw connected with thrust bearing seat is arranged in the lower side of rolling mill housing, one support is respectively arranged in the opposite side surface of two thrust bearing seat, anti-rotation crossbeam is installed between two supports, long hole is symmetrically opened in the side surface both ends of anti-rotation crossbeam, pin hole is opened in the side surface of support corresponding with long hole, and support and anti-rotation crossbeam are fixed by pin, and detection device is arranged on anti-rotation crossbeam.In the thrust bearing seat installation support, the thrust bearing seat of both sides is connected by anti-rotation crossbeam, can play the role of preventing the rotation of thrust bearing seat, effectively avoid the problem that traditional anti-rotation bracket is seriously scratched on the surface of housing window.

The present invention relates to scissors, and more particularly, to a gap adjustment device for scissors, including a fixed portion that penetrates an open portion of a first blade and a second blade to combine the first blade and the second blade, a pair of ball bearings that are inserted into the fixed portion, a thrust bearing that is formed between the ball bearings, a pressurizing rod that is inserted into the first blade side to pressurize the thrust bearing, and a gap between the first blade and the second blade is adjusted by the fixed portion and the pressurizing rod, so that the gap can be easily adjusted even if the gap between the first blade and the second blade changes, thereby minimizing resistance between the blades and maintaining hair cutting performance.

A device for wear testing includes a frame, a rotary actuator, and a linear actuator spaced apart from the rotary actuator along a longitudinal axis of the frame. The device further includes first and second specimen holding units. The first specimen holding unit includes a seat connected to the linear actuator, a plate engaging with the seat, and a first thrust bearing connected to the plate and at least one first diaphragm plate connected to the frame. The second specimen holding unit includes a shaft connected to the rotary actuator and a second thrust bearing connected the frame. The rotary actuator is configured to rotate a second specimen about the longitudinal axis. The linear actuator is configured to move a first specimen along the longitudinal axis, such that the first specimen engages with the second specimen.

The utility model provides a kind of semiconductor equipment that can track wafer motion trajectory in real time, including transmission cavity, transfer cavity, process cavity and wafer motion tracking system;Mechanical arm for transmitting wafer is provided in transmission cavity;Transfer cavity and process cavity are connected with the side of transmission cavity;Wafer motion tracking system includes industrial camera, horizontal rotation mechanism for driving industrial camera to rotate in horizontal plane and vertical rotation mechanism for driving industrial camera to rotate in vertical plane;Horizontal rotation mechanism includes horizontal rotation motor, horizontal drive gear, horizontal rotation gear and thrust bearing, horizontal rotation motor is connected with horizontal drive gear, horizontal rotation gear is horizontally arranged on the top cover of transmission cavity with horizontal drive gear and the both interlock, thrust bearing is fixedly connected with horizontal rotation gear;Vertical rotation mechanism is connected with the horizontal rotation gear of the horizontal rotation mechanism and with industrial camera. The present application helps to improve production yield.

The application provides a laminated welding-free gas dynamic pressure thrust bearing, which comprises a top foil, an elastic support foil and a bearing bottom plate; the side surface of the bearing bottom plate is sequentially provided with the elastic support foil and the top foil in a circumferential array; the top foil is provided with a first positioning block, the elastic support foil is provided with a second positioning block, and the bearing bottom plate is provided with a positioning groove; the top foil is inserted into the positioning groove of the bearing bottom plate through the first positioning block, and the elastic support foil is inserted into the positioning groove of the bearing bottom plate through the second positioning block. The application does not need welding, avoids the problems that the top foil of the traditional welding-type gas dynamic pressure thrust bearing cannot be replaced after wearing and the welding points are easy to be abraded with the rotor due to the protrusion of the welding points.

The utility model discloses a double-fluid water mist spray head which comprises a spray head body, one end of the spray head body is connected with a communicating bin, one end of the communicating bin is connected with an airflow pipe, one side of the communicating bin is connected with a liquid flow pipe, and one end of the airflow pipe and one end of the liquid flow pipe are provided with a speed adjusting device. The speed adjusting device comprises a rotating sleeve, a sliding groove, a sliding block, a sliding plate, a linkage sleeve, a moving rod, a moving sleeve, a matching sleeve and a thrust bearing, the sliding groove is obliquely formed in the liquid flow pipe and the air flow pipe, the sliding block is connected to one side of the sliding plate, the thrust bearing is connected with the linkage sleeve and the matching sleeve, the moving rod is sleeved with the moving sleeve, and the sliding rod is sleeved with the matching sleeve. The outer wall of the matching sleeve is connected with the inner wall of the liquid flow pipe and the inner wall of the air flow pipe through threads, a locking mechanism is arranged on the outer side of the liquid flow pipe and the outer side of the air flow pipe, and the locking mechanism comprises a locking sleeve, a control panel, a control groove, a control hole, a shifting rod, a shifting plate, a locking spring, a locking block and a stop block. The flow velocity adjusting mechanism has flow velocity adjusting flexibility and adjusting mechanism stability.

The utility model discloses a quick lifting stabilizing device for a general fulcrum of an airplane, which belongs to the technical field of aviation auxiliary equipment and comprises a hand wheel positioning nut, a hand wheel support rod, a one-way thrust bearing, a bearing base outer cylinder and the like. A groove is formed in the periphery of the lower part of the hand wheel positioning nut, a groove is formed in the top end of the bearing base outer cylinder, and a semicircular boss is formed on the inner wall of the top end of the groove; the hand wheel positioning nut and the one-way thrust bearing are installed in a groove of the bearing base outer cylinder, a groove of the hand wheel positioning nut and a semi-arc boss of the bearing base outer cylinder are matched for limiting, and the assembly and the lead screw supporting column are assembled to achieve vertical lifting. The lifting device is simple and practical in structure, easy and fast to operate, light, stable, flexible in lifting and capable of rapidly moving to a maintenance site, and heat guarantee maintenance efficiency is improved.