467 results about "Axial 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 aluminum alloy profile processing, and particularly discloses a super-long thin-wall aluminum alloy profile anti-deformation vertical quenching method which comprises the following steps: S1, determining mechanical parameters, and obtaining the maximum equivalent buckling axial pressure P of a to-be-quenched aluminum alloy profile; s2, determining the maximum constraint length of a single section: further calculating the maximum allowable length of the single constraint section of the to-be-quenched aluminum alloy section; S3, determining a minimum constraint section; S4, carrying out solid solution quenching: equally dividing the to-be-quenched aluminum alloy section according to the minimum constraint section N, and carrying out section marking in the radial direction from the bottom to the top, the adjacent segment marking positions and the top of the sectional material are restrained and fixed; and after fixation, solid solution quenching is carried out, and after solid solution quenching is completed, the profile is taken out. The vertical quenching device is suitable for vertical quenching requirements of various ultra-long thin-wall aluminum alloy profiles with complex sections, and the profiles are effectively prevented from being deformed in the vertical quenching process.

The invention provides a dynamic heat-water-force coupling test device and test method, and relates to the technical field of rock performance test.The device comprises a sample chamber for containing a rock sample; the heat loading assembly, the pore water pressure loading assembly and the force loading assembly are integrally arranged; the heat loading assembly comprises a heating element and a cooling element so as to simulate an environment in a wide temperature range or under a freezing and thawing cycle condition; the pore water pressure loading assembly is communicated with the rock sample to establish pore water seepage loading; an axial pressure loading element of the force loading assembly applies dynamic axial pressure to the rock sample, and a confining pressure loading element of the force loading assembly applies dynamic confining pressure to the rock sample; the sealing sleeve wraps the rock sample so as to isolate the confining pressure medium from the liquid medium. According to the device provided by the invention, three dynamic loads including the dynamic temperature, the dynamic pore water pressure and the dynamic mechanical stress can be synchronously applied and accurately controlled in a single device, so that a rock sample is subjected to a mechanical test in a vivid dynamic multi-field coupling environment.

The application discloses a blowout preventer suspension type pressure testing tool and method, which comprises a cup seal packer, a suspension body and a cup seal packer center body. The cup seal packer is sleeved on the outer wall of the cup seal packer center body and is located below the suspension body. The upper end of the cup seal packer center body is suspended on the suspension body, and the suspension body is provided with an axial pressure transmission channel. The application can make the pressure testing pressure and the weight of the pipe column all act on the suspension body, effectively change the force of the pipe column during the blowout preventer pressure testing, improve the construction safety, and improve the success rate and accuracy of the blowout preventer pressure testing.

The invention relates to the technical field of automatic control, and discloses a pressure-sensing precision mechanical part polishing brush system and method.The system comprises a multi-mode pressure sensing module, an elastic feedback execution module, a self-adaptive trajectory planning module and a closed-loop quality control module; establishing a contact pressure distribution model and analyzing pressure balance, and generating local and global pressure compensation instructions according to the pressure balance; an elastic feedback mechanism is driven to dynamically adjust the axial pressure of the brush, and meanwhile, a self-adaptive polishing path containing a pressure compensation weight is planned by combining the morphology data; the feeding speed and the rotating angle are cooperatively adjusted in the polishing process, and precise machining of the complex curved surface is achieved; and finally, the surface roughness is detected through an optical sensor, and technological parameters are optimized in a closed-loop mode. The problems of surface scratches and contour distortion caused by uneven pressure distribution are solved, and the machining quality and consistency of precision parts are improved.

The utility model discloses a screw type ball lock, including machine screw and circular through -slot, machine screw is fixedly connected with the steel ball on, the utility model discloses, when screwing into machine screw, axial pressure makes the steel ball of machine screw tail radial elastic expansion, closely fits the sphere, forms initial sealing and frictional resistance, thread tooth extrusion circular through -slot, produces additional normal stress and enhances locking effect, and the pre -tightening force makes the static friction force between the connecting piece, offsets external vibration or lateral load, prevents machine screw rotation, when the connecting piece is deformed or the installation exists angle deviation, the sphere adjusts the angle and keeps even pressure tightly, and the continuous radial expansion of ring provides self -compensation pressure tightly, offsets the pre -tightening force attenuation caused by vibration, and the ring can effectively prevent internal lubricating oil from leaking outward, and the ring can synchronously block the invasion of external dust, metal scrapes and other pollutants into the shafting, and the bearing and precision movement parts are protected.

The invention discloses a device and method for preventing fin warping of an end-plate-free stator, and belongs to the technical field of motor installation devices.The device comprises two tool pressing plates and a plurality of annular tensioning belts, adjustable tooth parts are annularly arranged at the inner circles of the tool pressing plates, and the tool pressing plates can adapt to stator iron cores with different inner diameters; the adjustable tooth part is sleeved with the annular tensioning belt, tension is adjusted through the tensioning adjusting device so as to provide uniform axial pressure, the tensioning adjusting device achieves one-way locking and controllable release through a one-way fluted disc and spring structure, and an angle dial is arranged on the base so as to achieve visual tension adjustment. The method comprises the steps of tool mounting, tooth part adjusting, tensioning and pressure maintaining, wire inserting maintaining, dismounting and recycling and the like, and fin warping can be continuously restrained in the wire inserting and transferring process. The device is simple and reliable in structure, high in universality, convenient to operate and suitable for batch production of end-plate-free stators, and the product quality and the production efficiency are effectively improved.

The invention discloses an elastic pin connector based on a double-convex-hull fuzz button contact piece, belongs to the technical field of electric connectors, and aims to solve the problems of high contact resistance, easiness in abrasion, easiness in transient signal interruption and the like caused by point contact of a traditional elastic pin connector. The connector comprises a sleeve with a one-way opening, an elastic piece and a needle head are sequentially assembled in the sleeve from the bottom to the opening, and the head end of the needle head extends out of the sleeve; two symmetrical annular convex hulls are arranged on the periphery and are formed by a plurality of strands of metal wires, and the distance between the convex hulls is larger than half of the axial length. During testing, the needle head is in contact with a tested chip and is compressed by the elastic piece under axial pressure, and the annular convex hull is in contact with the inner wall of the sleeve to form an electric signal conduction path of'contact point-needle head-sleeve '; after testing, the elastic piece rebounds, and the convex hull is separated from the inner wall of the sleeve to reset. The connector improves the contact stability, prolongs the service life, and is suitable for a high-reliability test scene of a chip.

The present application relates to the technical field of tunnel anchor rod, and particularly discloses a tensile grouting anchor rod, which comprises a hollow anchor rod body, the end of the anchor rod body inserted into a borehole is a grout outlet, grout is sprayed from the grout outlet along the axial direction of the anchor rod body, a deformation tensile part is movably arranged at the grout outlet, the deformation tensile part can be separated from the anchor rod body and collide with the inner wall of the borehole to generate extrusion deformation with a larger cross-sectional area under the action of the axial pressure generated by the grout, a rotating tensile part parallel to the axis of the anchor rod body is hinged to the sidewall of the anchor rod body, and the deformation tensile part drives the rotating tensile part to rotate to an inclined state with an included angle with the axis of the anchor rod body when the deformation tensile part is separated along the axial direction of the anchor rod body. The present application can increase the contact area between the anchor rod and the grouting body, thereby improving the tensile capacity, enhancing the anchoring capacity of the anchor rod, and ensuring the safety of the tunnel support project.

The invention discloses a pulse current assisted rapid bonding method for copper soldering paste. Comprising the following steps: coating a to-be-bonded surface of a lower substrate with micro-nano mixed copper soldering paste, and pre-drying to form a soldering paste layer; and placing the upper substrate above the soldering paste layer, in an atmospheric environment, applying an axial pressure of 0-5 MPa to the upper substrate or the lower substrate, synchronously applying a pulse current with a peak current of 0.5-1.8 kA and a duty ratio of 70%-90%, carrying out three pulse periods in total, and carrying out total duration of 1-10 s to complete bonding. According to the method disclosed by the invention, bonding with low time consumption, high bonding strength and low porosity can be realized in an atmospheric environment and under a low-pressure condition, and a high-reliability and low-cost solution is provided for power device packaging.

The invention relates to the field of overflow well pipeline drainage, and discloses an intelligent overflow well pipeline drainage system which comprises a pipe wall vibration monitoring module used for collecting a drainage main pipeline vibration signal, extracting vibration characteristics and generating an abnormal positioning report, and a sensing node response regulation and control module used for generating a pressure regulation and control strategy instruction. The shaft pressure gradient analysis module is used for obtaining time sequence data of a shaft axial pressure probe based on a pressure regulation and control strategy instruction and generating a pressure gradient map, the drainage flow planning module is used for obtaining shaft real-time water level data, calculating the water level change rate and generating a drainage instruction, and the valve scheduling module is used for scheduling the drainage flow according to the drainage instruction. And generating a valve control instruction set. According to the method, three-dimensional anomaly positioning is achieved through association of the pipeline vibration time-frequency characteristics and the sealing ring dielectric parameters, anomaly recognition is enhanced in combination with the pipe network topology and the pressure gradient matrix, the dynamic flow threshold value is generated through self-adaptive regulation and control of the sealing state, and the early warning precision and the regulation and control efficiency are improved.

The invention provides an inspection device for weld strength of a warhead shell formed by sheet roll welding, which comprises a sheet roll welding cylinder with a vertical weld and a liquid cavity buffer layer, and a pressure sensor is arranged between the liquid cavity buffer layer and the sheet roll welding cylinder; the device further comprises a radial circular truncated cone extrusion unit, the radial circular truncated cone extrusion unit comprises a plurality of radial circular truncated cone extrusion bodies, a plurality of annular through holes are formed in each radial circular truncated cone extrusion body, and an opening spring ring is movably installed in every two horizontally-corresponding annular through holes. The device further comprises an upper axial circular truncated cone extrusion body and a lower axial circular truncated cone extrusion body, axial pressure bolts are installed in the upper axial circular truncated cone extrusion body and the lower axial circular truncated cone extrusion body, the upper ends of the axial pressure bolts are sleeved with nuts, and outer flanges are arranged at the lower ends of the axial pressure bolts. By adjusting the internal stress value, the radial extrusion force borne by the weld joint is just equal to the internal stress borne by the weld joint during actual use of the warhead, then whether the weld joint is damaged or not is measured, and the safety of the warhead during launching is guaranteed.

This invention provides a belt conveyor turning device and control method, belonging to the field of mine conveying technology. It includes a steering frame and a redirecting frame. The redirecting frame is equipped with a redirecting roller, and the steering frame is equipped with a steering roller. An angle adjustment component includes an angle sensor, and a diameter adjustment component is installed on the steering roller. Tension data streams from the steering roller are acquired via a tension sensor, and an axial pressure distribution time-series matrix is ​​acquired via a pressure sensor array. Two sets of baffles are slidably mounted on the steering frame. A control module is installed on one side of the steering frame. It acquires the axial pressure distribution time-series matrix via the pressure sensor array and adjusts the roller angle based on the angle sensor data. The roller diameter is adjusted based on the tension sensor data. The material release point is determined according to the pressure field characteristics and the correction angle, and the baffle position is controlled. This solves the problems of belt misalignment and material ejection deviation caused by manual adjustment in traditional turning devices, ensuring stable belt operation.

The utility model relates to the field of hose connection discloses a kind of anti-static chemical gas conveying hose connector, including connecting pipe one and connecting pipe two, connecting pipe one is connected by sealing assembly and connecting pipe two, the surface of connecting pipe two is threadedly connected with threaded sleeve, the inner wall of the threaded sleeve is provided with bevel, the right side of connecting pipe two is fixedly connected with sealing ring, the sealing assembly includes round tube, the round tube is fixedly connected in the left side of connecting pipe one, the sealing ring is set in round tube outer wall, the outside of round tube is provided with elastic sheet, the right side of elastic sheet is fixedly connected with the left side of connecting pipe one. In the utility model, by threaded sleeve rotation drive bevel and protruding block cooperation, rotational torque is converted into axial pressure, prompting elastic sheet deformation and compressing sealing ring. The design does not need special tool, single person can complete installation, and without wrench and other tools can be quickly disassembled, reduce maintenance cost.

The utility model provides a Luer taper testing tool, which comprises an upper mounting assembly and a lower mounting assembly which are respectively and detachably mounted on the testing top surface and the testing bottom surface of a tensile machine, and the upper mounting assembly comprises an upper mounting seat, a connecting piece mounted on the upper mounting seat and an upper fixing clamp detachably connected to the connecting piece; the lower mounting assembly comprises a lower mounting seat, a rotating piece mounted on the mounting seat and a lower fixing clamp mounted on the rotating piece, and the tensile machine is used for applying axial pressure to a to-be-tested sample between the upper fixing clamp and the lower fixing clamp; and the rotating piece is used for driving the lower fixing clamp to drive the sample to be tested to rotate around the axis of the lower fixing clamp, so that the test cost and the cost expenditure in the aspect of equipment maintenance are effectively reduced.

The application relates to the technical field of metal material processing, in particular to a rolling forming process of an aluminum composite plate, which comprises the following steps: S1, surface pretreatment of the aluminum composite plate; S2, accurate clamping and positioning; S3, applying directional pressure and material flow guiding to the aluminum composite plate through a multi-station continuous rolling forming device; S4, multi-pass progressive rolling and local thickening; S5, cooling, shaping, surface finishing and nondestructive testing. The application has the following effects: the multi-station continuous rolling device applies radial and axial pressure, drives directional flow of the material, realizes local accumulation and thickening through multi-pass progressive rolling, realizes the local strengthening effect of on-demand material distribution according to the principle of invariable volume, reduces the waste of the material in the aluminum composite plate processing process, improves the material utilization rate, and reduces the production cost.

This invention relates to the field of pressure testing technology for new material composite pipes, specifically, to a pressure testing device for LLDPE three-layer composite pipes. The device includes a pressure testing body and a pressure output section mounted thereon. The pressure output section includes a first pressure output end and a second pressure output end mounted on the pressure testing body. Both the first and second pressure output ends are equipped with sealing joints. Each sealing joint includes a first compression ring with an output port at its center. Several sets of clamping components are arranged in a circumferential array on the first compression ring. The sealing joint also includes sealing components. This solution utilizes a triple mechanism of radial bidirectional clamping, adaptive gap filling, and axial pressure transfer to construct a highly reliable sealing testing system specifically for multi-layer composite pipe structures. The overall operating logic is clear: first, the pipe body is securely clamped and protected; then, the sealing is strengthened step by step.

The application discloses a negative Poisson's ratio bidirectional energy dissipation cross type energy dissipation component, which is characterized by comprising a frame (5) and a connecting piece (6), the frame (5) is a rectangular frame, the connecting piece (6) is arranged at the center position of the frame (5), and a core unit (2) is movably connected between the connecting piece (6) and four corners of the frame (5), respectively. Negative Poisson's ratio holes are arranged in the middle part of the core unit (2) in a circulating manner, and the negative Poisson's ratio holes are at least two columns of positive-negative orthogonal semi-recessed hexagonal holes. Under the action of an earthquake, the whole frame will move laterally, the lateral displacement of the frame is transmitted to four supports arranged along two diagonal lines through axial force, then two supports on one diagonal line will be subjected to axial tension, two supports on the other diagonal line will be subjected to axial pressure, and the energy dissipation section of the core member in the support is provided with the recessed hexagonal negative Poisson's ratio holes arranged in a circulating manner, so that the energy dissipation section will be deformed.

The invention discloses a friction stir welding surface quality on-line monitoring method, which realizes on-line monitoring of surface defects of friction stir welding seams on the basis of signals of force in a Z-axis direction measured in real time, and has the advantages of low cost, high efficiency and high precision. And the requirement for applying the friction stir welding technology in spaceflight large components and mass products of rail transit can be met.

The invention discloses a diffusion welding method for an electrostatic chuck base and an insulating layer. The diffusion welding method comprises the following steps that (1) the base and the insulating layer are pretreated; (2) the three-layer composite brazing filler metal is subjected to laser cutting according to the size of a to-be-welded area; the cut three-layer composite brazing filler metal is subjected to ultrasonic cleaning, drying and vacuum sealing storage; (3) the base, the three layers of composite brazing filler metal and the insulating layer are stacked and assembled in sequence; (4) the assembly part is put into a vacuum diffusion welding furnace, vacuumizing is conducted till the pressure is smaller than or equal to 2 * 10 <-3 > Pa, the temperature is increased to 500-600 DEG C in a segmented mode, meanwhile, the axial pressure of 2-20 MPa is applied, and after pressure maintaining, the temperature is slowly reduced to the room temperature; and (5) carrying out nondestructive testing on the welding interface by adopting an X-CT and ultrasonic phased array detection system. The welding temperature can be reduced, so that the residual stress of a welding bonding interface can be reduced, the cracking risk in the using process of the electrostatic chuck is reduced, and the service life of the electrostatic chuck is prolonged; meanwhile, it is ensured that the bonding interface has high thermal conductivity, and the temperature uniformity of the wafer can be improved.

A shelter apparatus for an interior of a vehicle. 2.1, a shielding device of the type is known, the shielding device has a flexible flat structure, the flat structure can be wound and unwound on a winding shaft and can move between a rest position wound on the winding shaft and a shielding position unwound from the winding shaft, the winding shaft is embodied as a hollow profile having a non-rotationally symmetrical inner cross-section and is rotatably mounted on the vehicle side in the opposite end-side end region thereof, and wherein a roll spring is arranged in the interior of the winding shaft, which roll spring exerts a continuous torque on the winding shaft in the winding direction, and the roll spring is statically held at one end on the roll shaft bearing and at the other end on a roll spring carrier, which is arranged in a rotationally locked manner with the roll shaft and is arranged in an axially movable manner in a hollow profile of the roll shaft. 2.2 according to the invention, a counter bearing of the winding shaft opposite the winding shaft bearing is provided with an axial pressure device which exerts an axial load on the end face of the winding shaft in the direction of the opposite winding shaft bearing. And 2.3, a use scheme for shielding the side window of the passenger car is provided.

The deep rock fracture toughness test system and method provided by the embodiment of the present application, wherein the system comprises a test sample, a vacuum pressure chamber and a host computer; the vacuum pressure chamber is provided with a confining pressure loading device, an axial pressure loading device, an electric resistance testing device and a camera device; the host computer is used to control the confining pressure loading device and the axial pressure loading device to load pressure on the test sample, so that the initial crack on the test sample is expanded; the host computer is also used to acquire the electric resistance change of the test sample and the expansion image of the initial crack when the initial crack on the test sample is expanded, and determine the fracture toughness of the test sample according to the electric resistance change of the test sample and the expansion image of the initial crack. The small change of the crack of the test sample is detected by monitoring the electric resistance change of the test sample, and the accurate crack change data is obtained by combining the image in the crack expansion process, so that the detection accuracy of the crack is improved, and the calculation accuracy of the rock fracture toughness is ensured.

The utility model relates to motor dustproof technical field, and disclose a dustproof motor for engineering instrument, including motor body, the bearing end cover of setting in the output end of motor body and the motor shaft of wearing in the bearing end cover, the shaft end outside of motor shaft is equipped with the shaft end double -sealed structure of self -compensation. The dustproof motor for engineering instrument, the outer dustproof ring is blocked dust initially through conical flow guide surface, the inner layer elastic sealing assembly is tightly combined through lip structure and motor shaft, forms double dustproof barrier, dust invasion amount reduces more than 90% than existing motor, the continuous axial pressure of annular wave spring can offset the sealing gap change caused by vibration, the lip structure can adapt to the slight deviation of motor shaft, the sealing reliability keeps stable under the high vibration working condition, the sealing cavity pressure relief hole and one -way air permeable membrane cooperation, can discharge the high pressure air in the sealing cavity, avoid the deformation of rubber sealing pad caused by excessively high air pressure, prolong the service life of sealing element.

The application discloses a rotary-straight conversion piezoelectric type wind energy collector, which comprises a non-powered wind cap, a central shaft, a cylindrical cam, a push rod with a ball head, a spring, a spring base, a spring end, a piezoelectric sheet and a supporting and fixing assembly. The wind cap drives the central shaft and the cylindrical cam to rotate synchronously, the cam surface groove drives the push rod to vertically reciprocate along the guide hole through the ball head, the push rod drives the spring to stretch and contract through the spring end, the spring applies axial pressure along the polarization direction of the piezoelectric sheet to the piezoelectric sheet through the spring base, so that the piezoelectric sheet is pressed in the d 33 Mode to convert mechanical energy into electrical energy. The application converts rotary motion into reciprocating pressure in the axial direction of the piezoelectric sheet, the stress is uniform and there is no stress concentration, the starting wind speed is low, the fatigue resistance is strong, and the application is suitable for continuously supplying power for low-power Internet of Things nodes in urban micro-wind environment.

The invention provides a belt conveyor turning device and a control method, and belongs to the technical field of mine conveying, the belt conveyor turning device comprises a steering rack and a turnabout rack, the turnabout rack is provided with a turnabout drum, the steering rack is provided with a steering drum, an angle adjusting assembly comprises an angle sensor, and a diameter adjusting assembly is installed on the steering drum. Tension data flow of the steering roller is obtained through a tension sensor, and an axial pressure distribution time sequence matrix is obtained through a pressure sensor array; the two groups of striker plates are mounted on the steering rack in a sliding manner; the control module is installed on one side of the steering rack, obtains an axial pressure distribution time sequence matrix through the pressure sensor array and adjusts the angle of the roller in combination with data of the angle sensor. Adjusting the drum diameter based on tension sensor data; the material separation point is determined according to the pressure field characteristics and the correction angle, the position of the striker plate is controlled, the problems of belt deviation and material casting deviation caused by manual adjustment of a traditional turning device are solved, and stable operation of the belt is guaranteed.

This invention relates to the field of disc spring testing technology, and provides a disc spring testing device and method, comprising a frame; a pressure platform mounted on the frame for placing the disc spring to be tested; a pressure member mounted on the frame, positioned above the pressure platform, for applying axial pressure to the disc spring, the pressure member having a mounting groove with an opening facing the pressure platform; and an inner support mechanism disposed within the mounting groove, extending beyond the pressure member, capable of penetrating the inner hole of the disc spring under the influence of the pressure member, for centering support within the inner hole of the disc spring. This invention achieves coaxial positioning of the disc spring and the pressure member through the coaxial arrangement of the inner support mechanism and the centering support of the inner support member on the disc spring, solving the technical problem of positioning deviation of the positioning cylinder due to wear after long-term use in the prior art where the positioning cylinder is used to position the spring.

The invention discloses an end tooth connection structure shaft local axial rigidity measuring device, which comprises a first support, a convex tooth drum, a concave tooth drum, a switching assembly, a force sensor and an adjusting assembly, and is characterized in that one end of the convex tooth drum is connected with the first support, and the other end of the convex tooth drum is connected with an end tooth at one end of the concave tooth drum; the other end of the concave tooth drum is connected with one end of the switching assembly, and the other end of the switching assembly is connected with the adjusting assembly through the force sensor so as to load axial tension or axial pressure through the adjusting assembly; through the combination of the switching assembly, the force sensor and the adjusting assembly, loading of the axial force is achieved, complex electromechanical equipment is not needed, the structure is simple, the axial force is conveniently applied, adjustment of the axial tension and pressure of the end teeth is achieved, the tension load and the pressure load are considered, and the axial force direction is very convenient to adjust.

This invention relates to the field of pressure resistance testing of water-jet loom parts, specifically to a pressure resistance testing device for ceramic plungers in water-jet looms. It includes a testing platform with a water tank on one side. A lifting frame that can slide vertically back and forth is located above the testing platform. A pressure testing head for applying axial pressure to the ceramic plunger is located in the middle of the lifting frame. High-speed cameras for capturing the entire deformation and fracture process of the ceramic plunger are symmetrically arranged on both sides of the pressure testing head. A pneumatic slide is located on the upper surface of the testing platform, and an electric clamp is located in the middle of the pneumatic slide. A transparent water bath tube is coaxially located above the electric clamp, and the clamping end of the electric clamp extends into the transparent water bath tube. The lifting frame also includes a rinsing and water replenishment mechanism, including a corrugated pipe connected to the water tank, a liquid storage box, and a sliding dropper. The liquid storage box stores a fluorescent penetrant. This device can simulate the actual working environment of the ceramic plunger, observe the microcrack propagation process in real time, and significantly improve the accuracy and reliability of the test results.

The invention relates to the field of trusses, and discloses an automatic truss feeding and discharging device on an automatic numerical control punch press, which comprises a truss, and a mounting frame is connected to the execution tail end of the Z axis of the truss; the grabbing tables are arranged on the mounting frame; the connecting pipes are arranged at the bottom of the grabbing table, and suckers are arranged in the connecting pipes; according to the spraying device, before the suction cup is about to be attached to a workpiece, the spraying component is started, liquid is poured into the rubber pipe firstly, meanwhile, the pushing piece is linked to apply axial pressure to the inwards-concave structure at the tail end of the rubber pipe, the inwards-concave structure is deformed and unfolded from the folded state, and therefore the spraying nozzles are driven to synchronously diverge in the direction, and a spraying area annularly expanding from the center to the outside is constructed. According to the spraying process, floating dust and electrostatic particles in the adsorption area are effectively dispersed in the mode that the central area is preferentially wetted and continuously diffused towards the edge, clean and flat attaching conditions are created for vacuum adsorption, and the adsorption success rate and the attaching sealing performance are remarkably improved.

The invention discloses an anisotropic large-size artificial rock core preparation device and method. The device comprises a forming system used for providing a rock core forming environment, an axial pressure loading system used for simulating rock core stratum axial pressure, a confining pressure loading system used for simulating rock core stratum confining pressure, a pore pressure loading system used for simulating rock core stratum pore pressure and a heating system used for simulating rock core stratum temperature. The collecting and metering system is used for collecting discharged pore pressure fluid and respectively metering a gas phase and a liquid phase, the data acquisition system can acquire various information during preparation, and the control system is used for controlling the systems to work according to data fed back by the data acquisition system so as to simulate the diagenesis process of natural rock and recording and analyzing the data. According to the invention, a coupling environment of a real rock diagenesis process can be simulated, and anisotropy and reservoir heterogeneity can be simulated.