1305 results about "Axial displacement" patented technology

The invention belongs to the field of equipment coupling monitoring, and particularly relates to a dynamic coupling compensation method for thermal expansion and axial displacement, which comprises the following steps of: calculating a first characteristic value for representing reference dynamic offset of a sensor based on a three-dimensional thermal-structure coupling model by acquiring a thermal expansion parameter and axial displacement parameter sequence of a casing; calculating a second characteristic value representing the real position change of the rotor in combination with a rotor-casing axial thermodynamic model, establishing a piecewise coupling function considering a nonlinear effect, working condition self-adaption and cross interference, and eliminating the mechanical thermal inertia and measurement system lag influence through a dynamic delay compensation mechanism; an accurate axial displacement measurement total error compensation index is generated, and grading compensation actions are intelligently triggered according to error grades; the problem of measurement distortion caused by dynamic coupling of thermal expansion and axial displacement is effectively solved, and the accuracy and reliability of state monitoring of the rotating machine are remarkably improved.

The invention provides an air tightness detection device of a pressure balance type plug valve, and relates to the technical field of valve air tightness detection. An air tightness detection device of a pressure balance type plug valve comprises a water pool, an adjusting mechanism, two clamping mechanisms and an end sealing mechanism, the end sealing mechanism comprises two groups of positioning assemblies and two groups of sealing assemblies, and the positioning assemblies and the sealing assemblies are communicated and used for enabling the sealing assemblies to generate axial displacement. The sealing assembly is coaxially arranged in multiple layers, the structures of all the layers of the sealing assembly are the same, the sealing assembly is used for being inserted into an inlet and an outlet of a plug valve to be detected, and by means of the multi-layer design of the sealing assembly and the design that the positioning assembly enables each layer of the sealing assembly to generate independent axial displacement, the plug valve to be detected can be detected. The sealing assembly is adapted to plug valves to be detected with different calibers; the sealing assembly has the action of expansion under the action of air source pressure, so that the part inserted into the plug valve to be detected is in sealed connection with the plug valve, and the sealing performance is ensured.

The invention discloses a laser radar windscreen wiper mechanism which comprises a track part and a moving assembly, and the moving assembly is provided with a transmission part coupled with the track part. The pivot shaft is connected to the transmission part in a circumferential rotation mode, the windscreen wiper assembly comprises a windscreen wiper base and a windscreen wiper strip fixed to the windscreen wiper base, and the windscreen wiper base is switched between an unfolding position and a containing position along with rotation of the pivot shaft; when the windscreen wiper base is located at the unfolding position and the moving assembly moves, the windscreen wiper strip can make contact with the surface of the laser radar window and form sliding fit with the surface of the laser radar window, meanwhile, the transmission part travels along the track part, the curvature change of the track part is converted into axial displacement of the pivotal shaft, and the pivotal shaft is driven by the transmission part. The laser radar window surface cleaning device has the advantages that the laser radar window surface cleaning effect is good, the structure is simple, the service life is long, and the laser radar window surface cleaning device is good in laser radar window surface cleaning effect, and the laser radar window surface cleaning device is simple in structure and long in service life.

A fastening device for releasable connection to a perforated rail of an aircraft and a method of assembly for such a fastening device. The fastening device comprises a housing having at least one locking head portion fixedly connected to the housing, at least one shear pin and an actuating pin. The locking head portion is insertable into a rail hole of the perforated rail and slidable along the longitudinal direction of the perforated rail to a locking position in which the locking head portion engages a slot portion of the perforated rail. The shear pin can be engaged with a rail hole of the perforated rail by axial displacement. The actuating pin is rotatably arranged relative to the housing and connected to the shear pin in such a way that a rotation of the actuating pin causes an axial displacement of the shear pin relative to the housing.

The invention discloses a high-pressure gas cylinder pressure stabilizing device used in a continuous high-temperature curing furnace. The high-pressure gas cylinder pressure stabilizing device comprises a mounting bracket, a pressing module and an inflation butt joint module, the pressing module comprises a top mounting seat and a pressing block; the top mounting seat is mounted on the mounting bracket through a top displacement adjusting mechanism; the pressing block can be mounted on the top mounting seat through a vertical displacement adjusting mechanism; the inflation butt joint module comprises a side mounting seat and an air tap male head; the side mounting seat is mounted on the mounting bracket through a side displacement adjusting mechanism; the air tap male head is mounted on the side mounting seat through an axial displacement adjusting mechanism; a tail inflation rod is fixed to the tail of the air tap male head, and a rotary connector capable of being connected with the air inlet end of the inflation air path is installed at the tail of the tail inflation rod. The device has the advantages of being convenient to use, simple and compact in structure, capable of being accurately in butt joint with the inflation nozzle on the gas cylinder and the like.

The invention relates to the technical field of industrial water treatment equipment, and discloses an intelligent flushing self-cleaning filter system for industrial water treatment. A dynamic suspended matter monitoring module of the system collects three-dimensional distribution data of deposits on the surface of a filtering medium in real time, and mixed deposition characteristics of suspended solids and oil stains are recognized through a multispectral imaging technology; the differential pressure trigger control module establishes a mapping relation between sediment thickness and fluid resistance according to the three-dimensional distribution data, and generates a cleaning trigger instruction when the real-time differential pressure data reaches a dynamic threshold interval; the spiral trajectory planning module analyzes the cleaning trigger instruction, and generates a composite motion trajectory containing a rotation angular velocity and an axial displacement rate in combination with the current position of a suction nozzle and a filter screen topological structure; the multi-mode flushing execution module synchronously adjusts torque output of a hydraulic motor and linear displacement of a piston cylinder based on the composite motion trail, so that a suction nozzle covers the whole effective filtering area of a filter screen along a spiral path.

The invention relates to a composite percussion drilling speed increasing tool, and belongs to the technical field of drilling tools. The reciprocating hammering unit comprises a hammer body and an impact hammer, the hammer body is axially and slidably connected into the sleeve, the impact hammer is rotatably connected into the hammer body, a reversing sleeve is rotatably connected into the impact hammer, a reversing cabin is arranged on the reversing sleeve, and a reversing runner hole is formed in the hammer body; the flow channel switch unit comprises a baffle ring arranged on the surface of the hammer body and a transmission mechanism connected between the sleeve and the baffle ring, and the transmission mechanism is used for converting axial motion of the baffle ring into rotary motion so as to open or close the reversing flow channel hole. When the drilling tool is lifted, the axial movement of the baffle ring can be converted into rotary movement, so that the baffle ring rotates relative to the hammer body while axially displacing along with the hammer body, a reversing flow channel hole is shielded, and high-pressure drilling fluid cannot flow into a reversing cabin, so that high-frequency composite impact is stopped, vibration and abrasion caused by idling are avoided, and the service life of the drilling tool is prolonged. And the service life and the safety of the tool are improved.

The invention relates to the field of wind power tower construction, in particular to a wind power tower self-climbing crane which comprises a frame unit, a variable-diameter clamping unit and a crane unit. The frame unit comprises a main frame and a movable frame which are in sliding connection, and the main frame and the movable frame are connected through a hydraulic driving mechanism. The crane unit is arranged on the top of the main frame. The variable-diameter clamping unit comprises a first variable-diameter clamping mechanism and a second variable-diameter clamping mechanism which are arranged around the wind power tower drum, the first variable-diameter clamping mechanism is connected with the main frame, and the second variable-diameter clamping mechanism is connected with the movable frame. The first variable-diameter clamping mechanism and the second variable-diameter clamping mechanism alternately clamp the wind power tower, and the main frame and the movable frame are alternately pushed and pulled through the hydraulic driving mechanism to ascend and descend so as to drive the crane unit to move in the axial direction of the wind power tower. The problems that existing wind power hoisting equipment is difficult to enter a site, the hoisting height is limited, transition is inconvenient, and the installation efficiency is low are solved.

The application provides a downhole hydraulic back-off tool, characterized in that the back-off tool comprises a hydraulic anchor, a hydraulic back-off device and a telescopic compensation mechanism, and the power part is composed of a driving cylinder, a driving pin, an anti-rotation cylinder, a rotating cylinder, a third spring, a central shaft, an inner ratchet mechanism, a driving shaft and an outer ratchet mechanism; the one-way left-rotation part of the hydraulic back-off device comprises the inner ratchet mechanism and a second spring, and the anti-rebound right-rotation part comprises the outer ratchet mechanism and a first spring. The application makes all the torques of the workover operation be transmitted to the fishing tool through the relative movement of the inner ratchet mechanism and the outer ratchet mechanism from the hydraulic back-off device, and the working string does not need to transmit the torque to the downhole through the surface wellhead rotary table or the top drive, the hydraulic anchor is anchored and unanchored through the pressure in the string, and the anchor provides a fulcrum function for the timely cooperation of the power torque output of the hydraulic back-off device; the telescopic compensation mechanism is used for compensating the axial displacement of the back-off tool.

The invention relates to the technical field of pipe bending machines, and discloses petroleum pipeline thick-wall hot pipe bending equipment with a medium-frequency induction heating device. The petroleum pipeline thick-wall hot pipe bending equipment comprises a core rod body, the core rod body comprises a guide rod connected with a rack and a guide column arranged at the tail end of the guide rod, and the tail end of the guide column is provided with at least two supporting joints which are in spherical hinge joint; elastic edges are arranged on the edges of the supporting joints and filled with hydraulic oil. According to the device, through coaxial and synchronous rotation matching of the wheel die and the clamping die, the guiding and limiting effects of the guiding die and the internal supporting design of the core rod body, a cooperative machining mechanism of external fixing, external guiding and internal supporting is formed, and the problems of axial displacement and radial deviation in the bending process of the thick-wall petroleum pipeline are effectively avoided. In the core supporting structure, multiple sets of supporting joints capable of flexibly rotating can be attached to the inner wall in a self-adaptive mode along with the bending radian of the pipeline, and a dynamic supporting system composed of elastic edges and hydraulic oil can dynamically adjust the supporting force according to the bending angle.

The invention discloses a magnetic suspension bearing displacement detection method and device, a magnetic suspension bearing system, a storage medium and a computer program product, an axial displacement detection area of a magnetic suspension bearing is provided with four displacement detection probes used for detecting axial displacement of a rotor, and the four probes are divided into two groups; the first group of two probes are installed along a first symmetrical direction, the second group of two probes are installed along a second symmetrical direction orthogonal to the first symmetrical direction, the design parameters of the same group of probes are consistent, and the design parameters of the different groups of probes are not consistent; the method comprises the following steps: carrying out mean value and difference operation on signals acquired by four probes to eliminate radial coupling interference; and filtering the signal subjected to mean value operation and differential operation by adopting same-frequency notch processing so as to filter radial coupling interference. According to the scheme, high-precision stable operation of magnetic suspension axial displacement is realized.

The invention provides a lining-free composite material storage box umbrella-shaped telescopic forming mold and a forming method. The lining-free composite material storage box umbrella-shaped telescopic forming mold comprises an umbrella-shaped supporting framework, a split type outer mold assembly, an adjusting screw rod and an outer mold locking device. The umbrella-shaped supporting framework comprises a front end socket radial telescopic connecting rod, a rear end socket radial telescopic connecting rod, a cylinder section radial telescopic connecting rod, a threaded sleeve, an adjusting sliding block, a quick release type sliding block locking device and a quick release device fixing pin. The threaded sleeve is guided to generate axial displacement through rotation of the adjusting screw rod, and unfolding and folding of the umbrella-shaped supporting framework are achieved. The split type outer die assembly is formed by splicing a plurality of light high-rigidity interlayer composite materials, Z-shaped splicing steps are arranged on the side faces of the die assembly, and block disengaging type locking devices are installed at the splicing positions of the side faces of splicing blocks. The outer mold locking device is mainly formed by combining a lock head pin and a lock body pin, the outer splicing blocks are reliably positioned, and the outer splicing blocks can be rapidly disengaged. The tool adopts modular design, has good supporting rigidity, is convenient to disassemble and assemble and high in reset precision, and remarkably improves the forming precision and efficiency of the composite material storage box.

The utility model relates to the technical field of planetary roller screws, in particular to a gearless planetary roller screw, which comprises a nut, a screw and a plurality of rollers. Assembling sections are arranged on the pin rollers; when the lead screw is a driving part, one of the assembling section and the nut is provided with annular teeth, the other one of the assembling section and the nut is provided with an annular groove, and the annular groove is matched with the annular teeth in a meshed mode so that no relative axial displacement exists between the pin rollers and the nut. When the nut is a driving part, one of the assembling section and the lead screw is provided with annular teeth, the other one of the assembling section and the lead screw is provided with annular grooves, and the annular grooves are matched with the annular teeth in a meshed mode so that no relative axial displacement exists between the pin rollers and the lead screw. Aiming at the defects of the existing planetary roller screw, a gear structure is eliminated, burrs generated by gear machining are eliminated, the cleanliness level of the roller is improved, the influence of the burrs on thread meshing is reduced, and the overall service life of the planetary roller screw is prolonged; impact and noise caused by gear meshing are avoided, and the overall NVH level of the planetary roller screw is improved.

The invention belongs to the technical field related to tunnel anti-seismic analysis, and discloses a green function analytical method and equipment for rayleigh wave dynamic coupling response of an interval tunnel in an inclined field. The method comprises the steps that S1, soil deformation and displacement in the x direction and the y direction caused by Rayleigh wave propagation are converted into tunnel equivalent seismic loads in the x direction and the y direction through a viscoelastic geobasic structure model; s2, a Timoshenko beam model on a viscoelastic Pasternak foundation is adopted to establish a partial differential equation set for controlling axial and transverse dynamic displacement responses of longitudinal discrete units of the interval tunnel; s3, deducing four Green functions representing the bidirectional dynamic coupling response of the tunnel in combination with a Green function method and an artificial spring boundary; and S4, performing integral operation on the Green function by using a superposition principle, and introducing an exponential function term containing time t to obtain axial displacement and transverse displacement of the tunnel and corresponding axial and transverse dynamic coupling response coefficients. According to the invention, the solving efficiency is improved.

The invention relates to the technical field of ship shafting measurement, and discloses a polar region ship shafting comprehensive measurement system and method, and the system comprises a data collection module, a preprocessing module, a data processing module, and an evaluation module. The data acquisition module acquires a strain signal, a vibration acceleration signal, a temperature signal, an axial displacement signal and a radial displacement signal of a shaft system through a sensor group, and the preprocessing module performs wavelet packet decomposition and adaptive threshold denoising, mean filtering and triple standard deviation criterion abnormal value elimination processing on the signals. The data processing module fuses the data of the same physical quantity based on an improved Kalman filtering algorithm and dynamically adjusts the weight of the fused data to obtain final optimized data, and the improved Kalman filtering algorithm comprises the step of introducing a temperature drift compensation factor into a state transition equation, and the evaluation module predicts potential fault types and development trends through an operation state evaluation model based on the optimization data.

The invention relates to the technical field of cable manufacturing, and particularly discloses a tension adjusting device for a cable wrapping machine, which comprises a hollow main shaft as a static base; the unwinding drum is rotationally mounted on the hollow main shaft; the hysteresis braking assembly comprises an induction disc fixed to the unwinding drum and a magnetic base arranged on the hollow main shaft in a sliding mode. The tension assembly comprises a tensioning rod rotationally connected to the axis mounting rod and a thickness measuring rod sliding in the radial direction. The spiral driving assembly converts the radial movement of the thickness measuring rod into the axial displacement of the magnetic seat; the locking assembly comprises a gear ring and a pawl. The thickness measuring rod is used for detecting the diameter of a strip coil in real time, the spiral driving assembly is used for automatically adjusting the air gap between the permanent magnet and the induction disc, non-contact hysteresis constant tension control is achieved, and the problems of heat attenuation and tension fluctuation of traditional friction braking are solved; and the adjusting assembly drives the pawl to lock the unwinding drum when the tape is broken or the tape coil is used up, so that galloping and wire disorder are prevented, and the safety of wrapping operation is improved.

A rigid locking binder for mechanically securing large, heavy loads and tie-down chains used for securing loads. The variable length binder comprises a rigid, threaded rod coaxially coupled within an elongated sleeve, such that relative axial displacements of the rod relative to the sleeve or vice-versa results in lengthwise expansion or contraction. The binder has chain hooks at opposite ends, that are pivotally associated with remote ends of the rod and sleeve for coupling to loads or anchor points. An assembly for selectively locking the sleeve and rod together establishing a selected binder length comprises a rigid lever pivotally mounted to the sleeve that controls a thread locking mechanism. The lever is pivoted between parallel pin plates secured to the sleeve. The thread locking mechanism comprises a threaded half nut that selectively engages or disengages rod thread portions that are exposed through an access window defined in the sleeve.

The invention discloses an anti-magnetic suspension accelerometer device based on a quasi-zero stiffness structure and a measurement method, and belongs to the field of precise instruments and meters. The device comprises a support, an axial displacement platform, magnetic conductive soft iron, an upper-layer pyrolytic graphite sheet, a lower-layer thin bismuth wafer, a capacitance displacement sensor and a permanent magnet array, wherein an anti-magnetic suspension system, a magnetic rigidity regulation and control system and a displacement detection system are arranged in the support; the anti-magnetic suspension system is composed of an upper-layer pyrolytic graphite sheet, a lower-layer thin bismuth wafer and a permanent magnet array, the magnetization directions of an inner ring and an outer ring of the permanent magnet array are opposite, a suspension element is suspended by virtue of anti-magnetic force and gravity balance, and quasi-zero stiffness is realized through positive and negative stiffness offset; according to the regulation and control mode, the magnetic field of the air gap where the suspension element is located is adjusted by adjusting the distance between the magnetic conductive soft iron and the permanent magnet, and the magnitude and gradient of magnetic induction intensity in all directions are changed, so that the magnetic rigidity is regulated and controlled, and efficient and accurate regulation and control of the sensitivity and the measuring range of the anti-magnetic suspension accelerometer are achieved. Therefore, the application range of the anti-magnetic suspension accelerometer is expanded.

The invention relates to a metal machining milling machine tool, and relates to the technical field of machining. The machine tool comprises a supporting base, a fixed portal frame, a displacement supporting frame, a displacement clamping piece, a rotary clamping piece, an up-down displacement assembly, an electric spindle and a rotary driving assembly, the displacement clamping piece allows a rotating shaft piece to axially displace, the rotary clamping piece allows the rotating shaft piece to rotate, and the rotary clamping piece and the displacement clamping piece conduct clamping at the same time to achieve rotating shaft locking. The two cooperate to realize rotation shaft fixation and motion control. The problems of vibration and machining errors caused by single-side clamping in the milling process of long-shaft parts can be solved.

The invention relates to the technical field of bearing machining, in particular to bearing outer surface grinding equipment for bearing machining and a using method, the bearing outer surface grinding equipment comprises a machine table serving as a mounting base, and a supporting plate is arranged on the machine table. According to the bearing outer surface grinding equipment for bearing machining and the using method, through the collaborative design of the bimetallic strip and the offset bush, heat transfer triggers the bimetallic strip to be heated and unfolded, the guide wheel is pushed to axially displace along the conical offset bush and achieve radial offset, the displacement amount for enlarging the grinding gap is in direct proportion to temperature rise, and the grinding efficiency is improved. By means of thermal induction linkage of the temperature guide pin, the thermosensitive liquid and the cylinder sleeve, the temperature guide pin is heated to promote the thermosensitive liquid to expand during thermal expansion of the workpiece, the supporting plate is pushed to automatically lift, so that a contact point of the workpiece moves upwards, an effective grinding gap is expanded in a disguised mode, and dual adjustment is formed with radial deviation of the guide wheel. The thermal expansion change of the workpiece is further adapted, and the grinding resistance and the workpiece damage risk are reduced.

The utility model discloses a demisting and spraying device for a desulfurizing tower of a thermal power plant, and relates to the technical field of desulfurizing towers of thermal power plants. The device comprises a barrel, a uniform spraying assembly and a cleaning assembly, the bottom of the barrel is communicated with a base, the bottom of the base is fixedly connected with an equipment box, a demister is fixedly connected to the top between the two sides of an inner cavity of the barrel, the uniform spraying assembly comprises a motor, and the top of the output end of the motor is fixedly connected with a conveying pipe. According to the utility model, the motor drives the conveying pipe to drive the hollow frame and the cleaning ring to rotate through the uniform spraying assembly, so that the atomizing nozzle sprays desulfurization slurry circumferentially around the axis of the cylinder body, and the top plate is extruded by the corrugated ring to push the turntable to move up and down, so that the conveying pipe synchronously generates axial displacement during rotation; the spraying track of the atomizing nozzle forms a spiral coverage area, so that a spraying blind area caused by low-speed vortex at the edge of the barrel is eliminated, the slurry is ensured to uniformly cover a flue gas flow channel, and the desulfurization efficiency is improved.

The invention relates to the technical field of satellites, in particular to a three-super platform actuator eddy current sensor fault autonomous reconstruction method. Comprising the following steps: according to a parallel mechanism kinematics relationship of each actuator, determining a first relationship between axial displacement measured by an actuator eddy current sensor and a load relative to a six-degree-of-freedom pose of a satellite platform; determining a parallel mechanism kinematics relationship of the fault-free eddy current sensor, and determining a second relationship between the axial displacement and the load measured by the fault-free eddy current sensor and the six-degree-of-freedom pose of the satellite platform; according to the first relation and the second relation, matrix reconstruction is carried out on the remaining fault-free actuator eddy current sensors, and an autonomous reconstruction matrix is obtained; and according to the autonomous reconstruction matrix and the measurement of the fault-free actuator eddy current sensor, obtaining all actuator eddy current measurement values of the actuator where the fault eddy current sensor is located. According to the method, when the eddy current sensor has a fault, the eddy current sensor distribution array is reconstructed, and three-super control is recovered.

Disclosed herein are slew drive components and systems. In some cases, a slew drive system can comprise a sensor configured to measure deformation in a deformation element of a sensor carrier component, which can result from axial displacement of a worm gear of the slew drive system. In some cases, measured deformation of a deformation element can be used to determine torque applied to a worm gear by a slew drive worm wheel, as described herein. As such, the sensor can be a torque sensor.

The invention discloses a pressing clamp for automobile half axle machining, and relates to the technical field of automobile half axle machining, the pressing clamp comprises moving seats which are arranged in a bilateral symmetry mode, the moving seats are used for being installed on a machine tool and can move towards or away from each other along a guide rail of the machine tool, and clamping mechanisms are installed on the moving seats through first driving mechanisms; and a bearing mechanism is mounted on the moving seat through a second driving mechanism. The device has the advantages that the process integration of positioning, machining and online deburring is realized; the adjusting unit drives the cleaning ring to axially move, the deflection seat drives the cleaning ring to circumferentially deviate, the cleaning ring is matched with the inner limiting ring, the cleaning ring and the inner limiting ring are matched in a staggered mode before milling groove machining operation so as to circumferentially wrap and press the spline end, rigid clamping without circumferential sliding is provided during machining, and the angular precision of milling grooves is guaranteed. And after the clamp spring notch is milled in the spline end, burrs at the joint of the spline end tooth groove and the clamp spring notch and burrs on the inner wall of the clamp spring notch are scraped off, and the fatigue resistance and reliability of the automobile half shaft piece are improved.

The invention belongs to the technical field of motor assembly detection, and particularly provides a motor stator center deviation measurement device and method, and the device comprises a stator adjustment table, and a first measurement assembly and a second measurement assembly which are symmetrically arranged along the stator adjustment table. The stator adjusting table is used for placing a to-be-detected motor stator; each of the first measuring assembly and the second measuring assembly comprises a supporting frame, a fixed underframe, an axial displacement driving assembly, a ruler group mounting rack, a first measuring ruler group, a second measuring ruler group and a third measuring ruler group; the fixed underframe is arranged on the supporting frame; the axial displacement driving assembly is connected with the fixed bottom frame and the ruler group mounting frame; the first measuring scale group, the second measuring scale group and the third measuring scale group are all mounted on the scale group mounting frame and are matched with one another, so that a plurality of point positions on the inner hole of the motor stator are measured in a three-point circle measuring manner. According to the invention, manual operation is replaced by electrically-driven automatic adjustment, and high speed and high consistency of measurement are realized.

The invention relates to the technical field of tea leaf processing, and discloses a fermentation device for tea leaf processing, the fermentation device comprises a base, the top of the base is fixedly connected with a fermentation tank, the fermentation tank is internally provided with a water inlet pipe and extends outwards, the fermentation tank is internally provided with a stirring mechanism, the stirring mechanism comprises a motor, and the motor is connected with the water inlet pipe. The motor is fixedly connected to the side face of the fermentation tank, the output end of the motor is fixedly connected with a rotating shaft through a coupler, a rectangular sleeve and a stirring plate are driven to rotate through the rotating shaft, meanwhile, a first abutting rod and an abutting ball interact, the stirring plate generates axial displacement in the rotating process, then stirring dead angles can be broken, and the stirring range is widened. Furthermore, a movable plate is telescopic under the action of a second spring, and is matched with contact between a first propping plate and a convex block, so that periodic up-and-down movement of a stirring rod is realized, and the stirring uniformity and adaptability are further enhanced, so that more comprehensive temperature and humidity contact is realized, and the fermentation consistency and the finished product quality are improved.

The invention belongs to the technical field of refrigeration and heating equipment, and particularly relates to a reversing valve and an air conditioner heat pump system. Comprising a pressure driving assembly and a channel adjusting assembly. The channel adjusting assembly comprises a plurality of fluid channels, and each fluid channel comprises at least one fluid medium inlet and a fluid medium outlet; the fluid channels are separated by blocking elements; the pressure driving assembly comprises at least two cavities and a moving element used for blocking the two cavities, connectors serving as pressure driving channels are arranged in the two cavities respectively and used for generating pressure difference to drive the moving element to move, and the moving element is used for driving the blocking element to move so as to change the path of the fluid channel. According to the multi-way valve, the pressure difference serves as driving force, the valve element generates axial displacement or rotary motion, automatic switching of the working modes of the multi-way valve is achieved, and the working modes of a system are switched by switching the flow direction of fluid. And an automatic reversing function can be realized without extra electric energy or mechanical power input.

A sealing device for hydraulic equipment according to the invention includes an outer member having an annular shape, an inner member inserted into the outer member, and a seal ring housed in an annular groove disposed in the outer circumference of the inner member and abutting on the outer member to prevent a liquid from passing through a gap between the outer member and the inner member. The annular groove of the inner member has a bottom portion including a recess for restraining axial displacement of the seal ring relative to the annular groove.

A multi-directional loading spin forming method for improving the wall thickness uniformity of corrugated pipes includes: mounting the fixed end of the pipe blank on a mandrel, with the free end of the pipe blank contacting the end face of a thrust plate; assuming that the wall thickness of the pipe blank remains constant during the spin forming process, with only the shape changing, the pipe blank is discretized into n micro-elements along the axial direction, maintaining the volume of each micro-element after deformation equal to that before deformation; based on the length difference of each micro-element before and after deformation, the specific displacement of the thrust plate when the spinning wheel moves to different waveform regions during the spin forming process can be obtained, and the axial displacement curve of the thrust plate is plotted to obtain the tail axial loading path; rotating the mandrel so that the spinning wheel contacts the pipe blank radially, the spinning wheel feeds according to the target waveform curve of the corrugated pipe, and simultaneously the thrust plate feeds according to the tail axial loading path, obtaining a corrugated pipe with better wall thickness uniformity. Compared with the spin forming results of the prior art, the maximum wall thickness difference of the corrugated pipe formed by the process of this invention is reduced by 25%.

The invention discloses a dismounting and mounting device for an output rudder of an aircraft, and aims to solve the problems of low dismounting and mounting efficiency of the output rudder and high equipment production and maintenance cost caused by complex dismounting and mounting structure and tedious dismounting and mounting steps of an existing device. The dismounting and mounting device comprises a connecting assembly, a locking assembly and a limiting assembly. The steering engine is connected with a rudder shaft of the output rudder through a connecting assembly, and the connecting assembly is configured to be capable of being driven by the steering engine and driving the rudder shaft to rotate; the locking assembly is arranged on the connecting assembly, and the locking assembly is configured to be capable of achieving locking of the connecting assembly so that the rudder shaft can be connected with the steering engine; the limiting assembly is matched with the locking assembly, and the limiting assembly is configured to be capable of controlling the locking state and the unlocking state of the locking assembly and limiting the axial displacement of the output rudder; the locking assembly can be switched from the locking state to the unlocking state under the action of external force, at the moment, the rudder shaft is allowed to be inserted into or pulled out of the connecting assembly, and when the external force is removed, the locking assembly recovers to the locking state so that the rudder shaft can be connected with the steering engine.