340 results about "Radial pressure" patented technology

The invention relates to the technical field of spinning machines, in particular to a spinning machine precision control method suitable for a high-temperature working condition, and the method comprises the following steps: collecting multi-source information; establishing a mapping relation between the thermal error and the temperature field to obtain a thermal error prediction model, training and correcting the thermal error prediction model, and outputting a real-time thermal error prediction value; generating a comprehensive position compensation instruction and performing position compensation; the pressure feedback value collected in real time is compared with a corresponding preset threshold value, if the pressure feedback value collected in real time is larger than or equal to the corresponding preset threshold value, the comprehensive position compensation instruction is converted into a force control instruction, and if the actual axial pressure feedback value or the actual radial pressure feedback value is smaller than the corresponding preset threshold value in the force control process, the comprehensive position compensation instruction is converted into the force control instruction. If yes, returning to the position compensation mode. According to the method provided by the invention, comprehensive compensation and active inhibition of thermally induced errors can be realized, and the forming precision of high-temperature spinning and the surface smoothness of a workpiece are remarkably improved.

The invention relates to the technical field of injection molding pressure control, in particular to a multi-stage pressure closed-loop compensation system and method for high-precision double-color injection molding, and the system comprises an interface gradient positioning module, a flow resistance state recognition module, a fitting function reconstruction module, a time sequence deviation triggering module and a gain reverse correction module. According to the method, the high-density measuring point data is collected, the interface radial pressure gradient change is extracted through the finite difference method, the stably-arranged nodes at the material intersection can be accurately locked, and the flow resistance state of the flow channel is judged according to the slope difference value of the screw speed and the pressure intensity change. A linear boosting or index slow increasing strategy is automatically switched to reconstruct a pressure function form, local high-pressure accumulation characteristics of a product sensitive area are accurately matched, the coincidence degree of a time window drift trend and a slope sudden change window is monitored, historical displacement and pressure errors are converted into backstepping factors through an iterative learning model, and the backstepping factors are calculated. And a driving gain curve is initialized and revised, so that forming deviation caused by thermal drift of equipment is eliminated.

The invention relates to the technical field of oil product detection, in particular to a full-automatic condensation point determinator and a determination method.The full-automatic condensation point determinator comprises a base and a test tube, the top of the base is fixedly connected with a mounting base, the surface of the base and the surface of the mounting base are provided with a test bath mechanism and a supporting mechanism, and the test bath mechanism enables a motor to drive a test bath to rotate; the rotation angle of the motor is controlled through a preset program, precise positioning is achieved, the tedious operation of hole-by-hole adjustment of the original structure is avoided, the rotating shaft is locked through mechanical clamping, angle deviation in the testing process is prevented, then manual adjustment is replaced by the motor and the electric push rod, and the test efficiency is improved. The double locking effect is achieved, accidental displacement can be prevented, and precision and efficiency are improved; according to the clamping mechanism, the four arc-shaped clamping plates apply uniform radial pressure through the first springs to clamp the outer wall of the test tube, the inner diameters of the clamping plates are gradually increased from top to bottom, and the clamping mechanism is compatible with test tubes with different outer diameters.

A surrounding rock deformation and failure test system with a rotatable stress main shaft in a three-dimensional crustal stress field is characterized in that a press machine upper pressure head and a press machine base are oppositely distributed up and down, and a loading hydraulic cylinder is connected with the press machine upper pressure head; the surrounding rock sample is vertically arranged in the axial loading space, and a simulation roadway is formed in the axis part of the surrounding rock sample; annular upper and lower end plates are fixedly connected in the upper and lower ends of the confining pressure cylinder respectively; the confining pressure cylinder sleeves the outer side of the axial loading space; a plurality of groups of mounting holes are uniformly formed in the circumferential directions of the annular upper and lower end plates; the radial pressurizing assembly comprises a supporting steel pipe and an elastic capsule. The main supporting section is sleeved with the elastic capsule, and a plurality of through holes are formed in the main supporting section. A plurality of strain bricks are pre-buried in the surrounding rock sample; the track is fixedly mounted in the simulated roadway; the micro camera is assembled on the track through the electric control trolley; and the strain gauge II and the acoustic emission probe are arranged in the simulated roadway. According to the system, the working condition that the direction of a stress field changes can be simulated in a three-dimensional true triaxial stress environment.

The sealing device comprises a first sealing assembly and a second sealing assembly, the first sealing assembly is arranged at the end, away from a gun head, of an inner cavity, the first sealing assembly comprises a sealing lantern ring, a first pressing plate and a first sealing ring, the sealing lantern ring is embedded in the inner cavity, and the first pressing plate is arranged on the first sealing ring. The first pressing plate is partially embedded in the inner cavity and abuts against the sealing lantern ring, the sealing lantern ring is in interference fit with the outer diameter of the piston rod, and the first sealing ring is arranged on the outer wall of the sealing lantern ring in a sleeving mode so as to apply radial pressing force to the sealing lantern ring; the second sealing assembly is arranged at the joint of the cylinder body and the gun head and comprises a second sealing ring, a second pressing plate and a push plate, the gun head is sleeved with the second sealing ring, the second pressing plate is embedded in the cylinder body and presses the gun head, and the push plate is connected to the cylinder body so as to press the second pressing plate. According to the technical scheme, the sealing effect and durability of the pipettor are improved.

The invention relates to the field of in-situ leaching mine production, and provides a horizontal well washing simulation experiment device which comprises an ore bed simulation system used for simulating an ore bed environment and comprising a box body, the top of the box body is of an open structure, the box body is filled with ore bed rock powder to construct a simulation rock stratum, and a plurality of injection connectors are formed in the side wall of the box body; the impact force testing system is buried in the simulated rock stratum and comprises a self-advancing force and axial pressure testing device, a radial pressure testing device and a bent connecting pipe, the self-advancing force and axial pressure testing device and the radial pressure testing device are connected through a screen pipe, and the first end of the bent connecting pipe extends into the rock stratum to be connected with the jet radial pressure testing device; the second end penetrates out of the open structure of the box body; and the sand washing well washing system is detachably arranged in the bent pipe in a penetrating manner and is used for being connected with the well washing impact force testing system so as to carry out jet flow well washing, air well washing and liquid pumping simulation experiments. The in-situ leaching uranium mining production environment can be reduced, and evaluation of various well washing tools is achieved.

The application belongs to the technical field of power aviation, and particularly relates to a connecting-separating device structure for a rocket-boosted glider, which comprises a connecting piece I, a connecting piece II and a sliding assembly. The connecting piece I is provided with a fixed limiting plate. The sliding assembly comprises a sliding limiting plate, a bolt and a driving assembly. The connecting piece II is provided with a connecting plate. The connecting plate is provided with a insertion hole. The axis of the bolt and the insertion hole is perpendicular to the axis of the rocket. The fixed limiting plate and the sliding limiting plate can be relatively close to each other, the connecting plate can be prevented from moving along the axis of the bolt, the two can provide clamping force to limit and fix the connecting plate, the radial pressure between the bolt and the insertion hole is reduced, and the possibility of being stuck or even self-locked is reduced. When being separated, the sliding limiting plate is away from the fixed limiting plate, the moving range of the connecting plate during separation is enlarged, the possibility of the connecting plate colliding with the connecting piece I and the sliding assembly during separation is reduced, and the success rate of separation is improved.

The application relates to the technical field of oil product detection, in particular to a full-automatic condensation point tester and a determination method, which comprises a base and a test tube, the top of the base is fixedly connected with a mounting seat, the surface of the base and the mounting seat is provided with a test bath mechanism and a supporting mechanism, the test bath mechanism enables the test tube placed in the test bath mechanism to be adjusted at multiple angles by rotating the test bath driven by a motor, replaces the original manual bolt structure, controls the rotating angle of the motor through a preset program, realizes accurate positioning, avoids the complicated operation of adjusting each hole in the original structure, prevents the angle from deviating during the test by mechanically clamping and locking the rotating shaft, and then the motor and the electric push rod replace manual adjustment, realize double locking effect, can prevent accidental displacement, and improve the accuracy and efficiency; the clamping mechanism enables four arc-shaped clamping plates to exert uniform radial pressure on the outer wall of the test tube through the first spring, the inner diameter of the clamping plate is designed to gradually increase from top to bottom, and different outer diameter test tubes are compatible.

The invention discloses a sighting telescope shell die-casting mold and a method thereof, and belongs to the technical field of metal die-casting molds, the sighting telescope shell die-casting mold comprises a base, a lower mold and an upper mold are arranged in the base, a mandrel is further arranged in the base, a motor and an air cylinder are arranged on the side wall of the base, and the output end of the motor is fixedly connected with one end of the mandrel; the other end of the mandrel is connected with the telescopic end of the air cylinder, and a vibration mechanism is arranged in the mandrel. During die casting, centrifugal force generated by rotation of the mandrel drives the stroke radial pressure gradient of the molten metal, bubbles are promoted to be gathered towards the center of the mandrel and discharged through a vacuum system, the porosity is reduced, meanwhile, shearing force generated by rotation of the mandrel and the molten metal can reduce the interdendritic crystal shrinkage porosity defect, and the yield is improved. And therefore, internal pores caused by insufficient feeding of the inner wall area are reduced, the problem of insufficient casting of the far end caused by overlong flow in traditional die casting is solved, the product forming is more complete and uniform, and the overall die casting quality is improved.

The utility model discloses a pressure-resistant sealing assembly of a bridge plug, and particularly relates to the technical field of bridge plug sealing. The protection part comprises an outer rubber barrel arranged outside the bridge plug in a sleeving mode and two fixing barrels, the two fixing barrels are arranged at the top end and the bottom end of the outer rubber barrel correspondingly, and multiple sets of positioning parts used for enhancing stability are arranged on the sides, close to the outer rubber barrel, of the fixing barrels; each group of positioning pieces comprises a positioning hole, the positioning hole is formed in one side, close to the outer rubber barrel, of the fixing barrel, and a touch plate is rotationally connected into the positioning hole. According to the utility model, the contact plate is rotationally connected with the fixed cylinder, so that when the contact plate and the outer top ring do relative motion, the contact plate drives the pressing plate to be in contact with the outer rubber cylinder, the pressing plate can apply an extrusion force from outside to inside to the outer rubber cylinder, and the outer rubber cylinder can be synchronously subjected to radial pressure and longitudinal pressure by virtue of fixed limiting of the limiting ring seat; therefore, the stability and the sealing performance of the outer rubber sleeve are enhanced.

The invention discloses a motor rotor magnetic shoe surface mounting tool and a surface mounting method thereof and a motor assembly production line, and the tool comprises a rotor housing mold ring, the inner side wall of which is provided with a magnetic shoe supporting structure in a matched manner, so as to form a plurality of magnetic shoe mounting positions for mounting magnetic shoes in the inner circumferential direction of the rotor housing mold ring, the limiting piece of the magnetic shoe supporting structure is arranged between the adjacent magnetic shoe mounting positions; the magnetic shoe auxiliary pressure maintaining device is configured to be detachably mounted in the rotor shell mold ring through a rotating shaft of the rotor shell mold ring; the edge of the magnetic shoe auxiliary pressure-maintaining device is circumferentially provided with a pressure-maintaining assembly corresponding to the installation position of the magnetic shoe, and the pressure-maintaining assembly is used for applying radial pressure to the magnetic shoe, so that the magnetic shoe is tightly attached to the inner side wall of the rotor housing die ring through a bonding layer between the magnetic shoe and the pressure-maintaining assembly. Therefore, the uniform gap between the adjacent magnetic shoes is standardized through the limiting piece and the pressure maintaining assembly, displacement caused by magnetism in the surface mounting process of the magnetic shoes is avoided, the magnetic shoe gap is stably maintained, the consistency of the magnetic shoe gap is guaranteed, and the adjacent magnetic shoes are prevented from being attracted and collided due to magnetism.

The utility model discloses a lens bearing turntable, and relates to the technical field of lens processing. The lens bearing turntable comprises a base and a turntable body, a control motor is arranged in the middle of the interior of the base, a rotating shaft is arranged at the top of the control motor, an electromagnetic chuck is fixedly connected to the top end of the rotating shaft, a magnetic plate is fixedly connected to the lower surface of the turntable body, and a positioning part is arranged in the middle of the lower surface of the turntable body; according to the utility model, the electromagnetic adsorption technology is used for replacing mechanical fixation, so that the disassembly and assembly process is simplified, the maintenance time is obviously shortened, the manual operation intensity is reduced, the labor intensity is reduced, the production efficiency is improved, and the production cost is reduced. And through the adaptive structure of the balls and the annular guide grooves, when the electromagnetic chuck rotates, the balls roll along the guide grooves to form multi-point support, and the radial pressure borne by the rotating shaft is greatly dispersed.

The invention relates to the technical field of laser cutting, in particular to a cutting device for instrument manufacturing, which comprises a mounting frame, a portal frame erected in the middle of the mounting frame and a laser cutting device arranged on the portal frame, and an inner fixing assembly is arranged at one end of the mounting frame; the inner fixing assembly comprises a rotary installation part, a telescopic rod and a plurality of inner supporting strips, the rotary installation part is fixedly installed on the installation frame, the telescopic rod is fixedly connected to the rotary installation part, the telescopic rod is divided into a telescopic section and a fixed section, and the inner supporting strips are annularly and fixedly connected between the telescopic section and the fixed section; an inner supporting assembly is arranged at the front end of the telescopic rod and is in an umbrella shape, and the outer edge of the inner supporting assembly is used for supporting the machined pipe fitting from the interior. Concentrated clamping force is converted into evenly-distributed radial pressure, the problems of indentation, ovalization deformation and the like caused by traditional outer clamping are fundamentally solved, and the clamping device is particularly suitable for machining of thin-wall and precise pipe fittings.

This invention provides a pressure testing device for vanadium redox flow batteries, relating to the field of flow energy storage testing equipment. It employs a push-pull sleeve and a threaded gas delivery pipe, with a compression ring and an expansion sleeve installed between the ends of the sleeve and the pipe. Rotating the push-pull sleeve causes it to move axially along the gas delivery pipe, driving a retaining ring to push the compression ring towards the expansion sleeve. The conical surface of the compression ring penetrates the expansion sleeve, applying radial pressure to cause it to expand outwards and tightly adhere to the inner wall of the tested pipe, forming a sealed structure. This eliminates the need for complex connections such as threads or plugs, achieving rapid sealing through mechanical deformation. A quick-connect fitting connects to a gas source, a control valve regulates the pressure, and a pressure gauge monitors the pressure inside the pipe, enabling sealing tests. Sectional testing can be performed without fully installing the pipeline system, avoiding the need for segmented troubleshooting after a leak and shortening testing time.

The utility model discloses a non-equal-pitch periodic alternating thread connection pair which is composed of a plurality of minimum period connection pair structures. The minimum period connecting pair structure is composed of a standard thread side and a non-equidistant periodic alternating thread side; by means of the thread pitch structure which changes alternately, radial pressure between threads is increased statically, and the anti-loosening capacity of a thread pair is improved. And an energy transfer path is more efficiently interfered under a dynamic load, and energy dispersion and offset are realized, so that a loosening mechanism is more thoroughly blocked.

The utility model provides a conical roller transmission system of an axial and radial ring rolling mill, which relates to the technical field of ring rolling mills and comprises a main body mechanism, a lower conical roller mechanism and an upper conical roller mechanism are arranged in the main body mechanism, the main body mechanism comprises a side block, a mounting plate is arranged at the top end of the side block, and a conical roller is arranged on the mounting plate. Fixing plates are fixedly mounted on the inner walls of the side blocks, the adjusting precision and operation stability of the conical rollers are improved, axial fine adjustment of the lower conical roller is achieved through the linkage design of a hydraulic cylinder A and a threaded rod, and the axial displacement deviation of the conical rollers can be effectively controlled in combination with guide constraint of a limiting rod and a sliding groove; a hydraulic cylinder B is adopted for driving a linkage locking mechanism of a convex block B and a clamping rod to be matched with the buffering design of a soft cushion B, so that uniform application of radial pressure is guaranteed, rigid impact among components is reduced, the disassembly and assembly process of the conical rollers is simplified through sliding fit of a limiting block and a limiting plate and modular design of a baffle and a pull block, and the maintenance difficulty is reduced.

The invention discloses a cable straightening device which comprises at least one straightening unit, and the straightening unit comprises a fixed support used for sleeving and fixing a to-be-straightened area of a cable; the straightening assembly is located in the fixed support and comprises at least one straightening plate, and the straightening plates can abut against the periphery of the cable and apply radial pressure to the cable; one end of the jacking assembly is connected with the straightening plate, and the jacking assembly is used for driving the straightening plate to move in the radial direction so as to press or release the cable. According to the technical scheme, the to-be-straightened area of the cable is sleeved with the fixing support, the jacking assembly is arranged to drive the straightening assembly to press or release the cable, the device aims at modularized and controllable micro-processing of local and slight deformation of the cable, the slight deformation can be straightened quickly and efficiently, and the straightening efficiency is improved. And long-time secondary heating straightening is avoided, and the cable straightening precision and straightening efficiency in the scenes of submarine cable flexible joint manufacturing or engineering field repair and the like are improved.

This invention discloses a testing device for a sealing device with multi-level testing functions, relating to the technical field of testing devices. The sealing device under test is installed outside the bushing. A medium is input into the testing chamber through a circulation mechanism. Then, different speeds are tested through a speed adjustment mechanism. At the same time, a loading mechanism applies radial pressure to the sealing device under test to simulate the radial force experienced by the sealing device in actual operation. A heating tube is installed to heat the medium in the testing chamber. The output end of a second motor is connected to the drive shaft to drive the drive shaft to rotate. A stirring paddle is connected to the drive shaft to rotate, making the medium distribution in the testing chamber more uniform. When the stirring paddle rotates at low speed, turbulence is generated in the medium in the testing chamber, thereby more accurately simulating the complex flow characteristics of the medium under actual working conditions.

The invention relates to a machining method for improving the fatigue performance of a TA18 titanium alloy pipe, and belongs to the technical field of titanium alloy machining. The method comprises the following steps: firstly, preparing a TA18 titanium alloy bar in manners of cast ingot smelting, cogging and forging; then, a TA18 titanium alloy pipe blank is prepared in a machining or extruding mode, and the TA18 titanium alloy pipe is obtained after the pipe blank is rolled; then, the TA18 titanium alloy pipe is loaded into a memory alloy pipe, the memory alloy pipe passes through a drawing die, the memory alloy pipe is heated at the front end of the drawing die, shape recovery occurs in the process that the memory alloy pipe passes through the drawing die, uniform radial pressure is generated on the outer surface of the TA18 titanium alloy pipe, and micro-plastic deformation occurs on the outer surface of the TA18 titanium alloy pipe; and a pressure stress strengthening layer is formed, so that the TA18 titanium alloy pipe with the strengthened outer surface is obtained. A pressure stress strengthening layer is formed on the outer surface of the TA18 titanium alloy pipe by using the memory alloy pipe, so that the fatigue strength is improved.

The application discloses a tunnel full-face surrounding rock deformation testing method and system, and relates to the technical field of geotechnical engineering, and comprises the following steps: driving a force sensor on a pre-constructed annular guide rail to rotate and position a target test point pair, and applying radial pressure to both ends of the force sensor, wherein the force sensor is arranged radially along the annular guide rail, and error compensation learning is further included after the rotation and positioning; collecting deformation data of the target test point pair, and obtaining a deformation modulus of the target test point pair through data analysis; testing each test point pair on the annular guide rail, constructing a deformation modulus distribution field according to a test result, obtaining a deformation modulus spatial distribution map through optimization correction, and determining a supplementary measurement position. The application is used to solve the problems of low efficiency and insufficient self-adaptation of a traditional tunnel surrounding rock deformation modulus testing method.

The application discloses an integrated joint quick buckling connection assembly method and system with improved efficiency, which comprises a support rack, wherein the support rack is a rectangular frame, a linear conveyor is arranged on the support rack, a pair of feeding structures is symmetrically arranged on the two sides of the linear conveyor, and a pair of buckling structures is arranged on the two sides of the linear conveyor and located downstream of the pair of feeding structures; the application relates to the technical field of integrated joint processing, and the integrated joint quick buckling connection assembly system and method can realize accurate matching between pipe clamp supply and workpiece conveying through mechanical hard synchronization, eliminate manual alignment deviation through a double-stage guide mechanism, convert axial thrust into uniform radial pressure through taper surface meshing design, ensure buckling quality consistency, reduce manual intervention through full-process automatic integration, greatly shorten the single-piece operation beat compared with the traditional method, and significantly improve production efficiency and product qualification rate.

The invention provides a supporting device and a supporting device design method.The supporting device comprises a steel arch frame which comprises a plurality of steel arch frame sections, and the steel arch frame sections are sequentially spliced to form an arch frame body; the first buffering part comprises a plurality of first buffering pads and is arranged at the joint of every two adjacent steel arch segments; wherein under the condition that the borne pressure exceeds the yield strength of the first buffer cushion, the first buffer cushion generates annular yielding deformation; the second buffering part comprises at least one second buffering cushion, is arranged on the back face, close to the surrounding rock, of the steel arch, is continuously arranged in the circumferential direction of the steel arch and basically covers the back face of the steel arch; under the condition that the pressure exceeds the yield strength of the second buffer cushion, the second buffer cushion generates radial yielding deformation; and under the condition that the steel arch bears pressure, the second buffer part is configured to generate yielding deformation after the first buffer part, so that graded yielding is realized.

The invention discloses a tunnel excavation face blast hole sealing automatic monitoring device which comprises a rotary compaction head, one end of the rotary compaction head is fixedly connected with a hole sealing rod, and the hole sealing rod is provided with a monitoring unit used for collecting radial pressure data and drill rod vibration errors. According to the tunnel excavation face blast hole sealing automatic monitoring device, the rotating compaction head is connected with the universal joint and the linear propelling module to serve as an executing mechanism of the device, the rotating compaction head is connected with the linear propelling module, and the monitoring unit and the hole sealing rod are connected through the linear propelling module. Radial pressure distribution data are collected in real time, vibration errors of the drill rod are compensated, hole sealing quality and sensing precision are effectively improved, whole-process automation of the hole sealing process is achieved, single-hole operation time is shortened, radial and axial position locking of the monitoring unit is achieved through the deflection angle locking mechanism, and operation efficiency is improved. And deviation of the drill rod due to vibration caused by single threaded connection is avoided, and the acquisition precision of the monitoring unit is guaranteed.

The application relates to the technical field of power engineering cable installation, and discloses an optical and electrical combined cable integrated laying and protection system for complex working conditions, which comprises: a rigid base configured to be anchored at a turning node; and a self-adaptive bearing assembly rotatably installed on the rigid base; the bearing assembly comprises elastic split units arranged in an axial direction; each unit is converted from an open state to a holding state of wrapping the side wall of the cable under radial pressure; and the inner surface of the unit is provided with a partitioned friction structure, which comprises a bottom high-friction rolling driving surface and two side wing low-friction sliding decoupling surfaces; through the cooperation of the tribological anisotropic structure and the self-adaptive geometric deformation, the tangential shear wear in the deep envelope state is eliminated, and the physical damage problem of the cable sheath and the optical unit in high-tension laying is solved.

Provided is a fixture for concentrically aligning and assembling a Ceramic Stack Assembly transducer during manufacturing. The CSA fixture comprises a base, a top compression cap, a central rod and a fastener, one or more alignment posts, and a driving wedge. The base further includes a groove to accept and align a transducer rear-centering ring at a central axis of the fixture. The transducer rear-centering ring supports one or more copper foil or ceramic rings during assembly. The alignment posts and driving wedge apply radial pressure to the copper foil or ceramic rings during assembly to force concentric alignment. The top compression cap, central rod, and fastener compress and stress the CSA Ceramic once assembled. The fixture simultaneously provides concentric alignment, foil alignment and provides a mechanism for stressing the CSA. A method of use is also provided.

A mechanical property testing instrument for soil under wet-dry or freeze-thaw cycles includes a test frame, a container, a water tank assembly, an upper loading component, a lower loading component, a circumferential loading component, a shear component, a displacement detection component, and a control device. The test frame is equipped with a base plate and several grooves. The bottom of the container is detachably sealed to the base plate. The water tank assembly is used to inject solution. The upper loading component compacts the sample in the container or applies axial loading. The lower loading component adjusts the axial position of the sample. The circumferential loading component applies radial pressure to the sample. The shear component shears and destroys the sample. The displacement detection component is mounted on the upper loading component, the circumferential loading component, and the shear component. The control device is connected to the upper loading component, the lower loading component, the circumferential loading component, the shear component, and the displacement detection component. This invention enables continuous testing of mechanical properties of a single sample and a single device without removing the sample, greatly simplifying the corresponding operation steps and equipment.