327 results about "Radial deformation" patented technology

The invention relates to the technical field of deformation detection, in particular to a method for measuring the deformation of a rotary body part, which comprises the following steps of: arranging measuring points on a target rotary body part, and performing dotting measurement by using a three-coordinate measuring instrument to obtain dotting data which are three-dimensional coordinates; based on the dotting data, calculation is carried out, and deformation information of the target rotary body part is obtained, the calculation comprises the steps of determining a data source, normalizing coordinates, converting a coordinate form, sequencing path measuring points, compensating a measuring head, calculating a position-error function, calculating all-directional axial deformation and radial deformation, speculating all-position deformation, and performing any combination calculation in multi-coordinate system data integration. According to the invention, the deformation of the rotary part can be measured conveniently, quickly and efficiently.

The invention discloses a biaxial test device, comprising: a bracket, a container, a sample setting assembly and a press, etc. Before use, the sample is installed between two limit plates. On the basis of applying confining pressure, the press is started, and the pressure rod moves vertically downward and applies a vertical downward load to the sample. When the sample is subjected to the vertical downward load, axial compression and radial deformation will occur. At this time, the radial deformation of the sample on both sides of the limit plates is limited, and expansion occurs on both sides without the limit plates. Subsequently, under the joint action of the confining pressure and the limit plates, the sample undergoes plane strain. Since the container and the limit plates are both in a transparent state, the side section state of the sample when plane strain occurs can be well observed. At the same time, the multiphase mixed fluid in the mixing container penetrates into the rock sample inside the sample and flows out through an output pipeline and is tested and analyzed by external equipment, so that the potential influence of multiphase seepage on the mechanical behavior of rock mass can be studied under plane strain conditions.

The invention relates to the technical field of numerical control machine tool machining, and discloses a dynamic optimization method for metal joint machining parameters of a numerical control machine tool. The method comprises the following steps: acquiring initial characteristic data of a metal joint blank in a numerical control machine tool processing area in real time, wherein the initial characteristic data comprises surface topology distribution data, material hardness gradient data and thermal expansion coefficient data; according to the stage identification code of the current machining procedure, a dynamic constraint rule set bound with the stage identification code is called, and the dynamic constraint rule set comprises an axial cutting force threshold value, a radial deformation tolerance range and a temperature drift compensation coefficient; and finally, based on the initial feature data and the dynamic constraint rule set, an initial machining parameter vector corresponding to a multi-objective optimization function is generated, and the initial machining parameter vector comprises a main shaft rotating speed reference value, a feeding rate weighting factor and a cooling liquid flow proportionality coefficient.

The utility model discloses an internal locking mechanism and a telescopic rod, the internal locking mechanism comprises a screw rod assembly, a wedge-shaped forcing block and a locking assembly, the screw rod assembly is configured to be connected with an inner rod, and the screw rod assembly comprises a screw rod part; the wedge-shaped forcing block is connected with the screw rod assembly; the locking assembly comprises a threaded sleeve and a locking sleeve, the locking sleeve is connected with the threaded sleeve, at least part of the locking sleeve is arranged on the periphery of the wedge-shaped forcing block in a sleeving mode, and the threaded sleeve is in threaded fit with the screw rod part and used for converting rotation of the screw rod part into axial movement along the inner locking mechanism and driving the wedge-shaped forcing block to drive the locking sleeve to deform in the radial direction of the inner locking mechanism so as to lock and unlock the outer rod. According to the internal locking mechanism of the telescopic rod, stable locking of the inner rod and the outer rod of the telescopic rod can be achieved, and the structure of the internal locking mechanism is simplified.

The invention relates to a supporting and fixing structure of a long-furnace-tube reactor, belongs to the technical field of waste resource recycling, and solves the problem that a long-furnace-tube reactor in the prior art is prone to permanent deformation in the axial direction and the radial direction. A supporting and fixing structure of a long-furnace-tube reactor comprises a supporting frame arranged outside a furnace tube of the long-furnace-tube reactor in a sleeving mode, one end of the furnace tube is fixedly connected with the supporting frame, and the other end of the furnace tube is a free end capable of axially sliding; the supporting and fixing structure further comprises a sliding supporting unit arranged on the supporting frame on the lower side of the free end of the furnace tube and a sliding hanging unit arranged in the middle of the furnace tube. The sliding supporting unit is of a bearing structure capable of sliding in the axial direction and allows the furnace tube to generate axial displacement when the furnace tube is heated and expanded. And the sliding hanging unit allows the furnace tube to generate axial and radial composite displacement when the furnace tube is heated and expanded. And furnace tube deformation under the high-temperature working condition is avoided.

The embodiment of the invention discloses a multi-sensor monitoring and compensating method for machining deformation of a large annular part. According to the embodiment of the invention, the feed-forward compensation amount can be generated on the basis of the predicted radial deformation amount of the stress abrupt change area in the surface radial deformation appearing time when the large annular part is machined, and then the feedback compensation amount is generated according to the deviation between the expected machining contour and the actual radial position data of the large annular part; and generating a total compensation amount according to the feedback compensation amount and the feed-forward compensation amount, and adjusting the motion trail of a cutter on the machine tool according to the total compensation amount, and the expected machining contour, the shape tolerance and the position tolerance of the large annular piece. Therefore, according to the embodiment of the invention, deformation caused by stress release can be compensated in real time in the machining process of the large annular part, and the compensation efficiency is improved.

The invention relates to a strain wave gear mechanism comprising: a wave generator which is rotatably mounted relative to a flexspline about an axis of rotation; and a gear which meshes with the flexspline. The problem is solved by a strain wave gear mechanism which is characterised by: at least one deformation measurement sensor which measures a deformation, in particular a radial deformation, of the gear and / or of a transmission component which is connected to the gear or to the flexspline, said deformation being caused by the shape of the wave generator; and an evaluation device which receives measurement signals from the at least one deformation measurement sensor and, on the basis of the measurement signals, determines the rotational position and / or the rotational speed and / or the direction of rotation of the wave generator and / or of a transmission element rotating in accordance with the reduction ratio of the strain wave gear mechanism, in particular of the flexspline, in particular relative to the gear or relative to the flexspline.

To reduce deformation of a stator in an upper-lower direction. A vacuum pump includes a rotor housed in a housing and rotationally driven, plural stages of rotor blades provided in the rotor, and plural stages of stators, each of which is disposed between adjacent ones of the plural stages of rotor blades. The stator has an inner peripheral rib, an outer peripheral rib, and a stator blade connecting the inner peripheral rib and the outer peripheral rib, and is housed in the housing in a state of the outer peripheral rib being sandwiched between spacers. At least part of the outer peripheral rib of the stator is provided with a deformable portion configured to allow deformation of the inner peripheral rib and / or the stator blade in a radial direction.

The invention discloses a rotor blade tip gap design method based on cold and hot state transformation and an aero-engine. The design method comprises the steps that the design working condition of cold and hot state transformation of a fan rotor is determined; performing pneumatic calculation on fan components; designing the structure of the hot-state blade S1; reversely solving the hot-state blade S1 to obtain a cold-state blade S2; designing a cold-state blade structure; performing forward solution on the cold-state blade to obtain a hot-state blade S3; forward solving is carried out on the fan rotor cold-state blade S2 to obtain a corresponding hot-state blade S3; performing error analysis on the thermal-state blade S3 and the thermal-state blade S1; blade tip models of the cold-state blade S2 and the hot-state blade S1 are compared and analyzed, and the front edge radial deformation delta q and the tail edge radial deformation delta h of the fan rotor are obtained; and according to the designed thermal state gap value delta r, the front edge gap Sq and the tail edge gap Sh of the blade tip of the fan rotor blade are obtained.

The invention discloses a casing centralizer with a pipe diameter adjusting function, and relates to the technical field of petroleum and natural gas drilling engineering equipment, the casing centralizer comprises two fixing rings which are symmetrically distributed left and right, the outer surface of each fixing ring is provided with a plurality of fixing seats at equal intervals in the circumferential direction, and each fixing seat is rotatably connected with a connecting plate; an elastic plate is arranged between the left connecting plate and the right connecting plate in the horizontal direction, and the two ends of each elastic plate are rotationally connected with the two adjacent connecting plates respectively. By rotating the adjusting bolt, the driving screw rod and the fixing pipe are in threaded transmission, and the distance between the two fixing rings is accurately controlled, so that the annular supporting frame formed by the connecting plate and the elastic plate generates controllable radial deformation; stepless adjustment of the supporting outer diameter is achieved, different borehole sizes are accurately matched, the problem that a centralizer with a fixed size is insufficient in supporting or difficult to descend is solved, it is ensured that a casing pipe is efficiently centered, and a foundation is laid for forming a uniform cement sheath.

The invention discloses a power turbine rotor structure design method, which belongs to the technical field of aero-engines, and comprises the following steps: arranging an oil film damper according to strain energy distribution and vibration mode; performing structure optimization on the power turbine rotor according to the radial deformation condition of the connection interface; designing the sectional wall thickness of the power turbine shaft; a balance boss is arranged on the outer wall of the maximum displacement position in each order of vibration mode power turbine shaft; and the gap between the central pull rod of the power turbine rotor and the power turbine disc is designed according to the maximum vibration displacement of the power turbine disc. According to the invention, the oil film dampers are arranged at reasonable positions, so that the rotor has good vibration reduction; connection interface deformation coordination calculation is carried out, a connection structure is optimized, and the connection interface is not damaged under long-term work; and designing and optimizing the segmented shaft wall thickness, optimizing and designing the critical rotating speed margin, considering the influence of the limit unbalance on the gap, and realizing a good dynamic balance characteristic.

The invention relates to a device and a method for measuring radial strain and micro-deformation of pyrolysis of oil-rich coal. The device comprises a pressure chamber, and a pressure chamber inner cylinder is arranged in an inner cavity of the pressure chamber; a gas confining pressure chamber is formed between the outer wall of the pressure chamber inner cylinder and the inner wall of the pressure chamber; the annular heating sleeve sleeves the outer side of the pressure chamber; the displacement measuring structures are arranged on one side of the annular heating sleeve, and each displacement measuring structure corresponds to one protruding structure and is connected with the corresponding protruding structure; the stress applying structure is arranged at the lower end of the other side of the annular heating sleeve and is communicated with the gas confining pressure chamber; the temperature sensor is communicated with the gas confining pressure chamber; and the axial load loading mechanism is positioned above the pressure chamber. The radial strain capacity of the coal rock can be conveniently measured under the conditions of high temperature and triaxial stress loading, meanwhile, the radial micro-deformation of the coal rock is monitored, and the problem that the radial deformation is difficult to measure in the stress loading process of the coal rock under the high temperature condition is solved.

The invention relates to the technical field of planet wheel single-station forging, in particular to a planet wheel single-station forging forming method and device.The method comprises the steps that whether radial deformation of an upset blank is uniform or not is determined based on a radial deformation characterization value, and under the condition that it is determined that the radial deformation of the upset blank is not uniform, the upset blank is subjected to single-station forging forming; determining the total pressure of the adjusting punch or the descending speed of the adjusting punch based on the expansion rate; whether the axial deformation of the upset blank is uniform or not is determined based on the second axial deformation characterization value, and under the condition that it is determined that the axial deformation is not uniform, the pressure maintaining duration of the last stage is adjusted based on the axial deformation difference value, and a punched blank is obtained; optimizing a pressure regulation coefficient or a speed regulation coefficient according to the batch fluctuation value of the defect characterization parameter; the device comprises a mechanical arm, a punching mechanism, a data acquisition module and a punching control module. The machining quality of the single station of the planet gear is improved.

The invention provides a flexible gear structure capable of reducing assembly stress of a hat-shaped flexible gear and a harmonic reducer, and relates to the field of harmonic reducer structures, the flexible gear structure comprises a flexible gear base, and the flexible gear base is provided with a plurality of round-head cylindrical long-strip grooves in the radial direction of an inner hole; the connecting edge of the flexible gear ring barrel radially extends outwards to form a plurality of bosses, the bosses are arranged in the radial direction of the inner hole, and the number and the position of the bosses correspond to the number and the position of the round-head cylindrical long-strip-shaped grooves; a boss is arranged on the side wall of the flexible gear tooth ring cylinder, a flange is arranged on the boss of the flexible gear tooth ring cylinder, extends into the round-head cylindrical long-strip-shaped groove and slides in the round-head cylindrical long-strip-shaped groove, and the flexible gear is of a split combined structure. The breakthrough improvement of accurate meshing of the rigid gear and the flexible gear is achieved while the torque is effectively transmitted through floating connection of the output end. When the flexible gear is subjected to assembly deformation, the flexible gear sliding block can guide the tail end of the side wall to generate radial deformation, and compared with a traditional integrated structure, the design enables the assembly deformation stress peak value to be greatly reduced.

The utility model discloses a quick positioning tool for preventing radial deformation during machining of an axial thin-walled workpiece, which belongs to the technical field of machining of thin-walled workpieces and comprises a chuck body, a plurality of sliding chutes are uniformly distributed on the chuck body along the circumferential direction and are arranged along the radius direction of the chuck body, and clamping components for clamping workpieces are arranged in the sliding chutes. The clamping component comprises a positioning clamping jaw, a tool clamp and a connecting bolt, the tool clamp is connected with the positioning clamping jaw through the connecting bolt, and an adjusting component used for adjusting the positioning clamping jaw is arranged in the chuck body. According to the clamping tool, the thin-wall part can be rapidly positioned and clamped by combining the clamping component with the adjusting component, and the problems that an existing clamping tool for machining the axial thin-wall part is prone to causing non-uniform deformation of the part due to the stress relation, and the machined part cannot be rapidly positioned and clamped are effectively solved; the machining efficiency is low; and meanwhile, the percent of pass of machined parts is easily reduced.

A method for the fine adjustment of the rate of a mechanical oscillator with an oscillating inertial mass, equipped, in a first step, with an actuator made of material suitable for irreversible local micro-expansion under the action of laser fires, to impart to an inertia-block a radial travel during suitable laser fires on a writing zone of the actuator, in a second step, the initial rate of the oscillator is set and measured, in a third step, the direction and the value of the deviation required to achieve a predetermined rate range, and of the travel to be imparted to inertia-blocks are calculated, in a fourth step, a writing zone is subjected to femtosecond laser fires to create expansion lines by local molecular expansion to radially deform the actuator, in a fifth step the rate is measured and the third step and fourth step are repeated if required.

The application discloses a kind of sensor calibration device and method for rotating curved surface radial deformation measurement, comprising: rack, motor and frequency converter are provided on rack, coaxially fixed with to be calibrated gullet on the output shaft of motor, and frequency converter is used to adjust the rotating speed of motor;Displacement calibration combination device, including fixed on rack X direction guide rail, fixed on the slider of X direction guide rail Z direction guide rail and fixed on the slider of Z direction guide rail accurate displacement adjusting mechanism;Reflective optical fiber displacement sensor is arranged on the moving end of accurate displacement adjusting mechanism, and the probe of reflective optical fiber displacement sensor is arranged along X direction;With the following points: the calibrated surface is rotated by motor, and the obtained calibration curve considers the influence of rotating calibrated surface on sensor, without secondary correction;Calibrated surface rotating speed can be adjusted, multiple continuous calibration of calibrated surface at different rotating speeds can be realized, and calibration efficiency is improved.

A catheter tube (102) includes an inner conduit (108) and a reinforcement structure (112). The reinforcement structure includes a coiled wire (118) surrounding the inner conduit and a braided wire assembly (120) surrounding the coiled wire. The reinforcement structure is configured to cause the inner conduit to resist radial deformation as a medical device is moved through the inner conduit. A medical intervention system includes the example catheter and an example medical device that can be deployed and implanted using the catheter (100).

The invention discloses a multi-layer weft steel skeleton and a pipeline thereof, and relates to the technical field of steel skeleton pipelines, the multi-layer weft steel skeleton comprises internal supporting warps, external spiral wefts are spirally welded outside the internal supporting warps, the internal supporting warps are formed by arranging a plurality of independent warps in the circumferential direction, and the external spiral wefts are spirally welded outside the internal supporting warps. According to the steel skeleton composite plastic pipeline, by means of the unique triangular arrangement structure design of the external spiral wefts, the stress condition of the steel skeleton composite plastic pipeline in the using process is improved, radial deformation of the pipe wall is effectively restrained, and the service life of the steel skeleton composite plastic pipeline is prolonged. And meanwhile, the internal supporting longitude lines cooperatively provide axial rigid support, the overall pressure bearing capacity and impact resistance of the pipeline are remarkably improved through the combined action of the internal supporting longitude lines and the external supporting longitude lines, the phenomenon that the pipeline is exploded in the using process of the steel skeleton composite plastic pipeline is effectively prevented, and then the overall service life of the steel skeleton composite plastic pipeline is effectively prolonged.

A strain wave gear device (1) is provided with: a first flange (8) that supports an input shaft (6) via a first support bearing (7); and a second flange (10) that supports the input shaft (6) via a second support bearing (9). The external gear (3) is fastened and fixed to the first flange (8) by means of a first fastening bolt (11), and the internal gear (2) is fastened and fixed to the second flange (10) by means of a second fastening bolt (12). The fastening strength in the radial direction between the externally toothed gear (3) and the first flange (8) by the first fastening bolt (11) is set to a degree equal to or greater than the fastening strength between the internally toothed gear (2) and the second flange (10) by the second fastening bolt (12). As a result, eccentricity between the wave generator (4) and the first and second support bearings (7, 9) caused by radial deformation of the first and second flanges (8, 10) due to a radial load acting from the load side can be suppressed, and excessive radial force can be prevented from acting on the wave generator.

The invention discloses a two-stage magnetic coupling hydraulic impact forming device and method. The two-stage magnetic coupling hydraulic impact forming device comprises a forming assembly, a first magnetic coupling assembly, a second magnetic coupling assembly and a control system. The forming assembly comprises a female die, a hydraulic cylinder filled with a liquid medium and a plunger part arranged in a sliding mode. One end of the hydraulic cylinder is in butt joint with the female die and a blank is placed. The first magnetic coupling assembly is arranged at the end, away from the female die, of the hydraulic cylinder and drives the plunger part to push the liquid medium through a coupling magnetic field to apply axial extrusion force to the blank. The second magnetic coupling assembly is arranged at the end, close to the female die, of the hydraulic cylinder and drives the blank to generate controllable radial deformation through a coupling magnetic field. The control system is in communication connection with the two magnetic coupling assemblies to achieve synchronous work. Through the synergistic effect of the axial extrusion force and the radial electromagnetic force, the blank is evenly stressed, excessive reduction of the wall thickness is restrained, the defects of stress concentration, cracking and the like are reduced, and the size precision of a formed part and the yield of finished products are remarkably improved.

This invention provides a heliostat main beam positioning and vibration damping assembly and a heliostat main beam drilling device. The heliostat main beam positioning and vibration damping assembly includes a positioning clamping structure and a vibration damping structure. The positioning clamping structure includes an axial limiting part and a radial fixing part. The axial limiting part is configured to cooperate with the main beam mounting component to axially limit the heliostat main beam. The radial fixing part is configured to support the heliostat main beam and radially limit its movement. The vibration damping structure includes a mating part, an elastic component, and a fixed base. The mating part is directly or indirectly slidably disposed on the fixed base and is configured to clamp or connect to the main beam mounting component. The elastic component is disposed on the fixed base and is configured to directly or indirectly act on the mating part. This invention solves the problems of existing heliostat main beam positioning devices, which cannot effectively control vibration during processing and cause large radial deformation of the main beam, making it suitable for large-scale application.

An exhaust system and a method for joining components of an exhaust system comprise obtaining an outer sleeve, a first pipe with a first end, and a second pipe with a second end. The method includes inserting the first end of the first pipe inside the outer sleeve to define a first overlap, inserting the second end of the second pipe inside the outer sleeve to define a second overlap, and radially deforming the outer sleeve and the first pipe inward at the first overlap. At the second overlap, the outer sleeve and the second pipe are radially deformed inward. The outer sleeve and the first pipe, as well as the outer sleeve and the second pipe, are pressed into engagement along the length of the first and second overlaps to define a pipe joint.

An end-fitting of a flexible pipe for transporting fluid, that includes at least one sealing assembly with at least one crimping ring comprising at least one bulge inserted radially into a polymer sheath of the flexible pipe,the end-fitting including an annular seal, disposed in contact with the polymer sheath at a distance from the crimping ring,the annular seal having an annular central region that is deformable radially towards the polymer sheath, and two stiffened annular peripheral regions that are situated on either side of the central region along a central axis of the flexible pipe, the peripheral annular regions being movable towards one other to activate radial deformation of the central region towards the polymer sheath from a rest configuration to an active sealing configuration around the polymer sheath.

The present invention relates to a reinforced bulging tank of a launch vehicle and a manufacturing method therefor. The tank is made of metal material with good plasticity. Firstly, the tank is manufactured by welding annealed plastic metal materials, wherein internal longitudinal reinforcing ribs and internal annular frames / annular plates of barrel sections are welded with a barrel section shell by a low energy laser welding method, and tank bottoms are progressively welded by a plurality of conical sections. Weldments are strengthened and formed through internal pressure bulging under the constraint of external tooling. The outer walls of the barrel sections are not radially deformed under the constraint of a plurality of small width metal rings, and the metal rings are not connected to each other axially. The strength of the materials can be greatly improved by a deep cooling bulging technology.

The application discloses a battery monomer, which comprises a shell, an array of winding cores, the shell comprises a cylindrical side wall, a first end wall and a second end wall, the array of winding cores comprises at least one row of cylindrical winding cores, the cylindrical winding cores of each row are arranged in sequence along a second direction, and the axis of each cylindrical winding core extends along a third direction, at least one cylindrical space extending along the third direction is enclosed between the outer side surfaces of the cylindrical winding cores and / or between the outer side surfaces of the cylindrical winding cores and the inner side surface of the cylindrical side wall, a cylindrical support is arranged in the at least one cylindrical space, the cross section of the cylindrical support is matched with the cross section of the cylindrical space where the cylindrical support is located, the outer side surface of the cylindrical support is attached to the outer side surface of the cylindrical winding core and / or the inner side surface of the cylindrical side wall, the cylindrical support can limit the radial deformation of the cylindrical winding core and can adaptively absorb, store and release electrolyte. While ensuring the stability of the structure of the cylindrical winding core, the application improves the defects of uneven distribution and insufficient storage of electrolyte.

The invention relates to the field of sensors, in particular to a torque sensor. The torque sensor comprises a flange, a middle shaft, a transition piece and an induction module. The flange is provided with a containing cavity, the middle shaft is located in the containing cavity, and one end of the middle shaft is integrally connected with the flange. The sensing module comprises a sensing body, the sensing body is installed in the containing cavity, and the sensing body is located at the other end of the middle shaft; the transition piece is arranged between the inductor and the middle shaft so as to absorb deformation at the joint. According to the torque sensor provided by the invention, one end of the middle shaft is arranged to be integrally formed and connected with the flange, so that assembly uncertainty caused by thread fastening and residual stress introduced by mechanical pre-tightening force are avoided; the other end of the center shaft is connected with the inductor through the transition piece, the transition piece can absorb axial and radial deformation caused by uneven thermal expansion in the welding process, welding thermal stress can be buffered to be transmitted to a sensitive sensing area, and therefore interference on strain measurement accuracy of the inductor is reduced, and long-term stability is guaranteed.

The invention discloses a catheter fixing device, and relates to the technical field of medical instrument production. The device comprises a fixing cylinder, a placing disc is fixedly installed in the fixing cylinder, a plurality of clamping plates are fixedly installed above the placing disc, the multiple clamping plates are designed to be in a trapezoid shape with the wide upper portion and the narrow lower portion and have radial deformation force, and the upper portions of the clamping plates are wrapped by a sleeve; the sleeve is fixedly installed on the rotating disc and is in threaded connection with the fixed cylinder, the fixed cylinder, the sleeve and the placing disc coaxially penetrate through the guide pipe, the fixed cylinder is movably installed on the fixed base frame, and the fixed base frame is connected with the fixing piece through the rotating mechanism. The trapezoidal clamping plates are arranged in the fixing cylinder, radial deformation force exists, the clamping force is controlled by means of the screwing-in depth of the sleeve, and firm fixing is achieved. The fixed cylinder is connected with the fixing piece through the movable base frame and the rotating mechanism, accurate transmission and self-locking are achieved through a worm and gear mechanism, the angle of the catheter can be accurately adjusted and stably kept, different clinical use requirements are met, and it is ensured that the catheter is stably fixed.