272 results about "Compressive deformation" patented technology

The invention provides a macroscopic finite element simulation analysis method and device for a sealing element considering plastic deformation, and belongs to the field of sealing element design. The method comprises the following steps: acquiring an engineering stress-strain curve of a plastic material in a compression state; converting the engineering stress-strain curve into a real stress-strain curve; determining a yield limit, and taking a strain point corresponding to the yield limit as a demarcation point of elasticity and plastic deformation; an elastic section of a real stress-strain curve is extracted, the elastic modulus is calculated, and the Poisson's ratio is obtained through axial and transverse strain measurement in a uniaxial compression test; a true stress-strain curve plastic section is extracted, and a multi-linear isotropic hardening model is established; constructing a complete elastic-plastic constitutive model covering the elastic deformation area and the plastic deformation area; the stress distribution, the strain response and the contact performance of the plastic sealing element in a compression deformation state are simulated. According to the method and the device provided by the invention, the problem that the result does not conform to the reality due to the fact that only elastic modulus and Poisson's ratio are used in existing sealing element simulation can be solved.

To provide a pipe joint that has strong pipe withdrawal resistance, is excellent in durability, and has a home base-shape recessed groove.SOLUTION: A home base-shape recessed groove 9 formed in a compressive deformable sleeve 7 has a large straddle angle θ, where a deep part tip 9A has a round shape with a specified large radius R1.SELECTED DRAWING: Figure 5

A nuclear main pump double-cone sealing leakage detection method based on a bolt load and a sealing contact model relates to the technical field of double-cone sealing leakage detection.The method comprises the steps that firstly, the bolt load is substituted into a mapping model of the bolt load and gasket sealing surface contact pressure, and the sealing surface contact pressure is obtained; dividing calculation units for the sealing contact surface, and completing the construction of a gasket sealing rough contact surface model of a single calculation unit; a finite element simulation method is used for obtaining a sealing contact surface entity after compression deformation; the deformed sealing contact surface entity is subjected to micro fluid leakage calculation in Fluent fluid simulation software, and the leakage rate of a single calculation unit is obtained; finally, the leakage rate of the whole double-cone sealing structure is obtained according to division of the calculation units. By acquiring the king bolt load and the sealing contact model, tiny leakage detection of the double-cone sealing structure is achieved, and the method has the advantages of being high in accuracy, simple in test, high in environmental adaptability and the like.

The invention discloses an intelligent laser cutting device for a cabinet plate of a switch cabinet, and relates to the technical field of laser cutting. Due to the fact that the thickness of a cabinet door plate is small, when the cabinet door plate is positioned and clamped, the clamping position of the plate is warped due to clamping pressure, the planeness of the plate is affected after warpage, and the edge of the cut plate is bent, the bottom of the plate is supported through cooperation of an angle pressing plate and a bottom supporting plate and cooperation of the bottom supporting plate and a supporting mechanism when the plate is positioned; meanwhile, through contact pressure between the cambered surface of the corner pressing plate and the top of the plate, the corner pressing plate slides and moves upwards under the limitation of the sliding column, the rubber cushion block deforms to generate elastic force, the elastic force is transmitted to the clamping corner of the top of the plate through the corner pressing plate, clamping compression deformation of the corner of the plate is limited during clamping and positioning, warping of the plate is avoided, and the machining precision of the plate is improved. And meanwhile, the flatness of the plate is affected after warping, and the edge of the cut plate is bent.

The utility model relates to a probe cleaning piece with an elastic buffer, which is mainly used for cleaning foreign matters on the surface of a probe and comprises a subbase layer, the middle layer is stacked on the top surface of the subbase layer, and the outer surface of the middle layer is subjected to surface processing treatment; the grinding layer is stacked on the top face of the middle layer, the grinding layer is formed by mixing a second material piece and a plurality of first grinding particles, the surface of the middle layer is tightly connected with the grinding layer after surface machining treatment, and the ductility of the second material piece in the grinding layer is larger than that of the first material piece in the middle layer; the release layer is movably attached to and torn from the top surface of the grinding layer; under the condition that the grinding layer has high elastic deformation and the middle layer has the compression characteristic, when the probe is inserted to apply force, the grinding layer can be elastically stretched downwards according to the characteristic of the second material piece, and a plurality of first grinding particles are in contact with foreign matters on the surface of the probe, so that the foreign matters can be separated from the surface of the probe; therefore, the grinding layer is driven to really coat the probe, so that the foreign matters on the probe can be completely removed.

The invention discloses a multi-scale simulation method for a thermal compression deformation behavior of TC4 titanium alloy, and belongs to the field of metal material processing simulation. Comprising the following steps: 1, carrying out thermal compression experiments at different temperatures to obtain a deformed sample; 2, analyzing the grain orientation, orientation difference angle and texture evolution of the sample by using an electron back scattering diffraction technology; 3, constructing a crystal plasticity finite element model, and simulating a polycrystalline deformation process; 4, constructing a molecular dynamics model, and simulating phase change and dislocation evolution in thermal compression and cooling processes; and 5, based on a multi-scale simulation result, hot working parameters are optimized, dynamic recrystallization and a beta-to-alpha phase change path are regulated and controlled, and grain refinement and performance homogenization are achieved. The invention discloses a correlation mechanism of the microstructure and the mechanical property in TC4 titanium alloy thermal compression deformation, and provides a theoretical basis for optimization of a thermal processing technology of a high-performance titanium alloy component in the aerospace field.

The invention discloses a method for lifting and repairing a pipeline and a pipe gallery slab staggering under soft soil, and aims to meet the requirement of grouting pressure design in a slab staggering differential settlement repairing project of an underground large-diameter pipeline and a small-section pipe gallery and improve the grouting repairing effect. According to the method, a mechanical model is established based on a mechanical mechanism existing in a staggered slab pipe joint and a surrounding soil body, and the grouting pressure range of grout is determined; based on the grouting pressure range, a theoretical model of settlement deformation of the soft soil layer below the pipe joint after grouting and compression deformation after solidification of the high polymer grout is established; calculating the slurry height required for lifting the error table pipe joint to a certain height per linear meter; and finally, lifting and repairing of the slab staggering pipe gallery are carried out by adopting a method that a bag is arranged below the pipe joint, high polymer polyurethane is injected inwards for lifting and repairing, and lightweight concrete is filled outwards for reinforcement, so that grouting lifting and repairing of the slab staggering pipe joint in the soft soil area under the condition that the underground pipeline and the underlying foundation soil of the pipe gallery bear safely are achieved. The construction is fast, the economic benefit is high, and the like.

The invention provides a copper foil thickness analysis method and device. The copper foil thickness analysis method comprises the steps that tension values of all layer number positions and thickness measurement results of the corresponding layer number positions in the copper foil winding process are obtained; analyzing a deformation mechanism by combining the obtained interlayer relative displacement and torsion angle according to the compression deformation analysis result to obtain stress distribution mode data; compensating thickness measurement data based on the stress distribution mode data to obtain compensated thickness measurement data; setting a normal thickness range and an anomaly judgment threshold based on the compensated thickness measurement data, and determining a sensitivity identification threshold parameter of thickness anomaly detection; judging a thickness anomaly state according to the sensitivity identification threshold parameter of the thickness anomaly detection to obtain a thickness anomaly detection result; and in combination with the thickness anomaly detection result and historical winding process thickness measurement data, thickness anomaly detection combination parameters are determined.

The invention belongs to the technical field of engineering materials, and particularly discloses an anti-impact sheath for a carbon fiber composite cable. The sheath comprises an outer protective layer and an inner protective layer; the inner protective layer has a porous structure; the inner protective layer is made of at least one of polyurethane resin, silicone rubber, polylactic resin, fiber reinforced polyurethane resin and fiber reinforced silicone rubber; the porous structure has at least one pore structure selected from a regular pore structure, a disordered pore structure, a bionic pore structure and a gradient pore structure. The sheath has the advantages of being large in compression deformation, high in energy absorption capacity, good in impact resistance and protection effect, light in weight, high in designability and the like, when the sheath is applied to the carbon fiber composite cable, the transverse impact resistance of the carbon fiber composite cable can be remarkably improved, and the service life of the carbon fiber composite cable is prolonged. And the dead weight of the carbon fiber composite cable is reduced, and the bearing efficiency of the cable is improved.

The utility model relates to the technical field of expansion joints, in particular to a deformed steel-elastic body combined seamless expansion joint structure and a bridge, the expansion joint structure increases the coupling action area and the coupling force of an elastic body and deformed steel through the combined structural design of a deformed plate, the deformed steel, the elastic body and a covering layer, so that the expansion joint structure is more flexible and reliable. The phenomenon that weak connecting surfaces are easy to debond too early is improved, the service life of the structure is prolonged, and the durability of the structure is improved; the deformation direction of the elastic body is controllable, the road surface is prevented from bulging, and the driving safety problems such as bumping are completely eradicated; the covering layer in the expansion joint area can cooperate with the elastic material for tension and compression deformation, meanwhile, it is guaranteed that the rigidity transition from the asphalt concrete layer in the non-expansion area to the covering layer is smooth, and the vicious circle that the bumping phenomenon is caused by the unsmooth road surface, and the local damage of the road surface is more serious due to the impact load under the bumping phenomenon is prevented.

The invention belongs to the technical field of bridge engineering, and particularly relates to an analysis method for intelligently sensing a hanging basket of a corrugated steel web box girder bridge, a terminal and a storage medium, and the method comprises the steps: obtaining deformation data of a plurality of measurement points installed on the hanging basket of the corrugated steel web box girder bridge in an actual asynchronous method construction process; establishing an initial finite element model based on the geometric information of the hanging basket structure, and setting an elastic constraint condition at each support position of the initial finite element model; according to the invention, the static level gauge, the inclinometer and the strain gauge are arranged at the key positions of the hanging basket to construct a multi-source sensing monitoring network, so that the cooperative sensing of the vertical displacement, the inclination attitude and the structural strain is realized, and the comprehensiveness and accuracy of the state sensing in the construction process are effectively improved. Secondly, a vertical spring unit is introduced into the finite element model to serve as elastic constraint, the vertical compression deformation behavior of the corrugated steel web under the load effect is truly simulated, and the physical authenticity of boundary conditions is remarkably improved.

The invention belongs to the technical field of mechanical simulation and prediction of woven fabrics, and particularly discloses a modeling method and system for simulating wrinkles of a multi-layer woven fabric, and the method comprises the steps: building a numerical model considering the characteristics of the multi-layer woven fabric, and enabling the multi-layer woven fabric to be formed by stacking single-layer woven fabrics according to a target layering sequence; determining a numerical value implementation method of the numerical value model in the finite element framework, wherein the numerical value implementation method is implemented through a subprogram interface; simulating the wrinkle defect generated in the deformation process of the two-dimensional woven fabric by adopting the finite element framework according to the numerical model through the numerical implementation method; wherein the numerical model is established by simulating tensile deformation, shear deformation and bending deformation of a single-layer fabric through shell units of the multi-layer woven fabric and indirectly simulating compression deformation and interlayer slippage behaviors through contact interaction among the shell units. According to the invention, the accuracy of wrinkle defect simulation of the multi-layer woven fabric can be improved.

The invention relates to the technical field of compressed air energy storage, in particular to a gas storage cavern surrounding rock compression deformation simulation design method, equipment, a medium and a device. According to the invention, the bearing layer and the deformation layer form the simulation surrounding rock deformation, and the controllable deformation value generated by the simulation lining layer is converted into the measurable deformation value of the deformation layer, so that the specified deformation of the surrounding rock under the action of internal pressure can be conveniently simulated by adjusting the opening parameters of the deformation layer; during design, a given lining target deformation amount is used as a control target, and a deformation layer opening type capable of achieving the lining target deformation amount is preliminarily screened out by judging the error of the opening rate or the error of the actual maximum compression deformation amount; then, whether the holes in the deformation layer are basically closed or not under the action of self weight and the action of the maximum internal pressure P is checked, the hole type finally meeting the design requirement is screened out, the simulation test device simulates the pressure-bearing deformation capacity of the surrounding rock under the given condition, and the screening adjustment amount is small.

The invention provides a plate tension-compression buckling-restrained clamping device and a working method, relates to the field of tension-compression tests, and aims to solve the problem that data errors are easy to introduce by adopting a buckling-restrained structure during compression of a plate in a tension-compression cycle test. The elastic piece acts on the lower clamping plate through elastic force, so that the working area continuously restrains the parallel section of the sample, buckling instability of the parallel section in the thickness direction during compression is prevented, it is guaranteed that deformation is in-plane deformation all the time, the sample slides relative to the working area during tension and compression circulation, and sliding friction force can be reduced through the antifriction layer at the contact position of the lower clamping plate. The constraint force transmitted by the elastic piece is measured by the force sensor in real time, and the data can reflect the constraint strength and potential friction influence, so that subsequent correction of compression deformation data is facilitated, and errors are reduced.

The invention provides a device and a method for testing the shearing and compression performance of a helicopter engine damping part. The shearing performance testing device comprises a base (1), a fixed support (3), a stress application lead screw (4), a tension sensor (5), a dynamometer (6), a double-fork (7), an arc-shaped pulling plate (8), a mounting support (10), a dial indicator (11) and a magnetic base (12). The compression performance testing device comprises a base (1), a fixed support (3), a stress application lead screw (4), a tension sensor (5), a dynamometer (6), a mounting support (10), a dial indicator (11), a magnetic base (12), a single lug (13) and a square loading frame (14). Measurement of shear and compression deformation displacement of the engine damping member is realized, shear and compression performance of the engine damping member is verified, and the installed damping member is ensured to effectively prevent transmission of vibration waves and weaken harm of inertial impact to an engine. And the situation that the installation of the damping piece with substandard static performance affects the flight safety is avoided. The test cost is low, the operation is simple, the test efficiency is high, and the deformation displacement of the damping member can be visually reflected.

The utility model discloses a multi-degree-of-freedom deformation monitoring and maintaining device for a bridge support. The multi-degree-of-freedom deformation monitoring and maintaining device comprises a support displacement sensor, a contact type displacement sensor, a laser sensor and a laser target, the support displacement sensor is vertically arranged on the padstone, and a measuring rod of the support displacement sensor is connected with the main beam; the contact type displacement sensor is horizontally installed on an abutment through a support, and the contact end of the contact type displacement sensor makes contact with the outer side face of a main beam. The laser sensor is arranged on the support. A support displacement sensor and a laser sensor form a support compression deformation measurement system, the overall compression deformation and deflection angle of the support can be accurately represented, and the support void phenomenon can be found in time; and the relative shearing displacement of the main beam and the abutment is detected through the contact type displacement sensors and the laser sensors on the adjacent edges. The device has better anti-interference capability, can provide measurement data with high reliability in real time, and can strictly control the jacking of the bridge when the bridge is replaced.

This invention relates to the field of titanium alloy material preparation technology, and particularly to a multi-pass forming process for TC11 titanium alloy, comprising the following steps: Step 1, preparing titanium alloy bars; Step 2, heating the titanium alloy bars to 950℃ at a heating rate of 5℃ / s; Step 3, after reaching the set temperature, holding the titanium alloy bars at that temperature for 300 s to fully eliminate the temperature gradient inside the sample; Step 4, performing three compression deformations on the titanium alloy bars using a press, with a strain rate of 10 s. ‑1 The maximum deformation is 70%; a 10-second isothermal interval is set between each two compression passes; in step five, after deformation, rapid cooling is immediately achieved using water quenching. This invention achieves the technical goal of optimizing the hot forming process of titanium alloys and producing high-performance titanium alloy products.

The invention relates to the technical field of test benches, and discloses a new material filter material on-line test bench, which comprises a base, the top of the base is fixedly connected with an L-shaped frame, the inner wall of the L-shaped frame is slidably connected with a sliding rod, the bottom of the sliding rod is fixedly connected with a gas hood, the top of the base is fixedly connected with a hollow frame, and the hollow frame is fixedly connected with an air cylinder. The top of the base is slidably connected with a sliding frame, the top of the sliding frame is provided with a test box, the inner wall of the hollow frame is fixedly connected with a fixed rod, the inner wall of the hollow frame is rotatably connected with a threaded rod, the circumferential surface of the threaded rod is in threaded connection with a U-shaped plate, and the inner wall of the test box is slidably connected with a permeable plate. According to the invention, an actual use scene can be simulated, stable and controllable pressure extrusion is applied, the compressive deformation resistance and interlayer bonding strength of the filter material are evaluated, the optimal clamping force during installation of the filter material is determined, and pore blockage and filter channel deformation caused by extrusion in actual application are avoided.

The utility model discloses a scraper loader discharge port connecting member, and relates to the technical field of loader connecting pieces, the scraper loader discharge port connecting member comprises a guide hopper, a first fixing mechanism and a second fixing mechanism, the first fixing mechanism and the second fixing mechanism respectively comprise a movable plate and a fixed plate, and the surface of the fixed plate is fixedly connected with symmetrically distributed limiting rods; threaded rods distributed at equal intervals are fixedly connected to the surface of the fixed plate, sliding holes slidably connected with the limiting rods are formed in the front face of the movable plate, and connecting holes distributed at equal intervals are formed in the surface of the movable plate. According to the utility model, the side wall of the discharge port of the scraper loader is inserted between the movable plate and the fixed plate, and then the fixing nut is arranged on the threaded rod and is screwed down, so that the movable plate and the fixed plate are tightened, the non-slip mat is compressed and deformed, and the non-slip capability between the movable plate and the fixed plate is improved; and the movable plate and the fixed plate are fixed on the discharge hole of the scraper loader.

The invention relates to a display module and a display device, and the display module comprises a display panel which is located in a bending region and a non-bending region; the supporting structure is arranged on one side, in the thickness direction, of the display panel, the supporting structure comprises a first supporting layer and a second supporting layer, and the first supporting layer and the second supporting layer are adjacently arranged in the first direction; at least part of the first supporting layer is located in the bending area, and at least part of the second supporting layer is located in the non-bending area. According to the display module, at least part of the first supporting layer with high elastic modulus corresponds to the bending area, so that local reinforced support with high deformation resistance is provided for the bending area which is prone to collapse when the display module is in the unfolded state; and at least part of the second supporting layer with low elastic modulus corresponds to the non-bending area, so that a flexible buffer area easy to compress and deform is provided for the non-bending area needing to absorb material redundancy when the display module is in the bending state.

The utility model discloses a leakproof type sealing preservation box which comprises a glass box body, an outer convex edge is arranged at the top end of the glass box body, a box cover is arranged at the top end of the outer convex edge, sealing buckles are arranged on the two sides of the box cover, a center boss is arranged at the center position of the top end of the box cover, and an opening is formed in the center boss. An exhaust window is arranged at the top end of the center boss, and a top groove is formed in the top end of the box cover. Through the arrangement of the box cover, the baffle, the first sealing strip, the O-shaped groove, the second sealing strip and the thin sheet, effective sealing of the box body is achieved, the O-shaped groove in the first sealing strip facilitates compression deformation of the first sealing strip, the first sealing strip can be better attached to the outwards-protruding edge, the first sealing strip and the second sealing strip are distributed in an L shape, and the sealing effect is good. According to the anti-leakage preservation box disclosed by the utility model, the anti-leakage part is perfectly attached to the edge of the glass box body, and is matched with the two groups of sheets to form multiple blocking, so that the sealing property of the preservation box is effectively improved, and the leakage phenomenon is prevented, and therefore, the preservation box has an anti-leakage function.

Method for connecting a sensor arrangement (20) to a measurement object (2), the method comprising the steps (100) Provide - of a measured object (2), - a sensor arrangement (20) comprising a strain gauge (1) which is at least configured to detect tensile and compressive deformations of a measurement object (2), and an electronic module (19), - a first connecting foil (10a) and a second connecting foil (10b), each containing metallic materials (11, 12) which react exothermically when activated, (200) Placing the first connecting foil (10a) between the strain gauge (1) and the electronic module (19), (300) Activating the metallic materials (11, 12) of the first connecting foil (10a) such that the first connecting foil (10a) heats up in such a way that a metallurgical connection is created between the strain gauge (1) and the electronic module (19), wherein after activating the metallic materials (11, 12) of the first connecting foil (10a) an electronic connection exists between the strain gauge (1) and the electronic module (19), (400) Place the second connecting foil (10b) between the strain gauge (1) and the object being measured (2), and (500) Activating the metallic materials (11, 12) of the second connecting foil (10b) so that the second connecting foil (10b) heats up in such a way that a metallurgical bond is created between the strain gauge (1) and the object being measured (2).

An optical lens, a transmitting module, a probe apparatus, and a terminal device, relating to the technical field of optics and serving to reduce the compressive deformation of lens pieces caused by lens barrels under high-temperature working conditions. The optical lens comprises: a lens barrel, a lens piece, and a spacer ring assembly; the edge of the lens is in local contact with an inner wall surface of the lens barrel; the spacer ring assembly comprises a first spacer ring and a second spacer ring, the first spacer ring and the second spacer ring being respectively in contact with two surfaces of the lens piece in the axial direction; in the radial direction of the lens piece, there is a first distance between the contact position of the first spacer ring and the center-of-gravity position of the lens piece, and there is a second distance between the contact position of the second spacer ring and the center-of-gravity position of the lens piece, the first distance being different from the second distance. On the basis of such structure, a combination of two forces applied by the two spacer rings to the lens piece will generate a certain moment on the lens piece. The moment can be used to reduce or offset the moment generated by a compressive force of the lens barrel on the lens piece under high-temperature working conditions, so as to reduce or eliminate the deformation of the lens piece caused by the compressive force of the lens barrel on the lens piece.

The utility model discloses a soft upholstered furniture splicing corner structure capable of reducing deformation error, which belongs to the field of furniture and comprises a first splicing frame and a second splicing frame, one end of the first splicing frame is in butt joint with one end of the second splicing frame, and the first splicing frame is sequentially wrapped by a first splicing corner inner supporting layer and a first flexible outer layer from inside to outside. The second splicing frame is sequentially wrapped with a second splicing angle inner supporting layer and a second flexible outer layer from inside to outside. The first splicing corner inner supporting layer and the second splicing corner inner supporting layer are soft rubber layers, and the first flexible outer layer and the second flexible outer layer are sponge layers, so that the softness of the furniture can be ensured, and the splicing corner between the first splicing frame and the second splicing frame can be supported through the inner soft rubber layers, and therefore, the compression deformation at the splicing corner can be reduced, and the service life of the furniture can be prolonged. The size of the opening can be reduced; meanwhile, compared with an existing mode of reducing the opening through the technology, the requirement for the technology is simpler, and the production difficulty of furniture can be reduced.

A flexible reactor includes a lower insulating plate, a coil assembly, a buffer assembly, and an upper insulating plate. The coil assembly includes a coil, an elastic filler, and a fiber tape. The elastic filler absorbs impact energy through elastic deformation under the action of electrodynamic force, the stress of the wire is reduced, and the deformation energy absorption effect can be achieved. The multiple buffer assemblies are arranged on the inner side and the outer side of the coil in a staggered mode. The buffering assembly comprises a kidney-shaped hole, a fixing column, a buffering column and a pressing nut. The extension direction of the kidney-shaped holes is parallel to the diameter direction of the coil, and two buffer columns are arranged in each kidney-shaped hole and located on the two sides of the screw joint column respectively. When the electric shock absorber is subjected to the action of electric power, impact energy can be directly transmitted to a buffer column in the buffer assembly from a coil, the buffer column is matched with a kidney-shaped hole, so that the buffer column absorbs the impact energy through compression deformation, and mechanical impact is converted into compression potential energy.

The invention relates to the technical field of fabric testing, in particular to a testing device for high-elasticity blended fabric. The device comprises a tensile strength testing machine, a lifting device is arranged on a workbench of the tensile strength testing machine, two clamp heads are symmetrically arranged on the lifting device, two fastening assemblies are symmetrically arranged in each clamp head, clamping blocks are fixedly connected to the ends of the fastening assemblies, and the two opposite clamping blocks jointly form a clamping face used for clamping the high-elastic fabric; each clamping block is of an elastic composite structure, a plurality of holes are formed in each clamping block, when the two clamping blocks move in the opposite directions and are pressed on the high-elasticity blended fabric, elastic clamping block bodies are pressed to deform, local negative pressure is generated at hole openings of the holes in the elastic clamping blocks under the action of compression deformation, the corresponding portions of the fabric are slightly adsorbed and slightly bulged towards the interiors of the holes, and therefore the fabric is formed. A plurality of micro anchor points are formed, and flexible adsorption contact replaces traditional rigid tooth top meshing.

The invention relates to the field of laminated slab construction, in particular to a first laminated slab and aluminum mold combined construction method. The method comprises the following steps that S1, a mounting groove is formed in the upper working face of the internal corner of the aluminum alloy formwork; and S2, manufacturing an elastic leakage-proof strip. And S3, the leakage-proof strip is placed in the mounting groove. And S4, an anti-skid groove is machined in the upper working face of the aluminum alloy formwork. And S5, the aluminum alloy formwork system is installed and positioned, and beam steel bar binding is completed. And S6, the prefabricated laminated slab is hoisted to the mounting position of the upper working face of the aluminum alloy formwork. And S7, concrete is poured, and component gaps are filled through compression deformation of the leakage-proof strips. And S8, concrete curing and form removal are conducted, and construction of the current-layer structure is completed. The problem of slurry leakage caused by insufficient component matching precision in the traditional process is effectively solved; compression deformation generated by the leakage-proof strips during concrete pouring can fill gaps of components in a self-adaptive mode, repeated construction of temporary plugging materials is avoided through the integrated design of the leakage-proof strips and the aluminum formwork, and the formwork turnover efficiency is improved.

The utility model relates to the related technical field of door edge covering, in particular to an edge covering structure with a deformation preventing function and a door, and the edge covering structure with the deformation preventing function comprises two attaching plates attached to the two sides of a door plate; the side frame is formed by connecting four side frames end to end and is of a frame-shaped structure, the side frame wraps the four edges of the door plate, the two attaching plates are clamped and fixed, each side frame comprises an inserting beam, clamping grooves allowing the side ends of the attaching plates to be inserted are formed in the two ends, in the thickness direction of the door plate, of each side frame, and the attaching plates can be bonded to the surfaces of the inserting beams after being inserted into the clamping grooves. The four edges of the door plate are wrapped, compared with an existing mode that the four edges of the door plate are directly attached to the side ends of the door plate, the stability is higher, the problem that the side frames fall off can be effectively prevented, meanwhile, the two faces of the door plate are wrapped by the two attaching plates, assembling is convenient, and the stability of the side frames after installation is kept; the compressive strength of the side frame can be effectively improved, and the situation of compressive deformation is prevented.

The invention provides a closing holding device for a vacuum arc-extinguishing chamber and a vacuum circuit breaker, and belongs to the technical field of switch equipment. The switch-on holding device comprises a spring cylinder, a guide block is installed in the spring cylinder, a switch-on holding spring is installed between the guide block and the cylinder bottom in a pressing mode, the spring cylinder comprises a guide inner circumferential face used for guiding the switch-on holding spring, a lining cylinder is fixedly arranged in the spring cylinder, and the lining cylinder is sleeved with the switch-on holding spring. The lining cylinder comprises a guiding outer peripheral surface, wherein the outer diameter of the guiding outer peripheral surface is matched with the inner diameter of the closing retaining spring so as to guide the compression deformation of the closing retaining spring. According to the invention, the guide outer circumferential surface of the lining cylinder is utilized to guide the compression deformation of the closing retaining spring, and the guide inner circumferential surface of the spring cylinder is combined to realize the inner and outer guide functions of the closing retaining spring, so that the stable output of the magnitude and direction of closing retaining force is ensured, and the good centering effect and stable contact of the moving and static contacts are ensured; and the performance stability and the service life prolonging of the vacuum arc-extinguishing chamber are facilitated.

The application discloses a process method for improving the hardness of 5A06 aluminum magnesium alloy, and comprises the following steps: step 1, cutting processing is performed on the 5A06 aluminum alloy rod to form a plurality of cylindrical short samples; step 2, the sample is subjected to deformation treatment: the sample is compressed once, and the deformation amount is 16%-32%; step 3, the sample subjected to the deformation treatment is directly immersed in liquid nitrogen for cryogenic treatment, is placed in air to be warmed to room temperature, and the hardness of the sample is measured. The application solves the problems that it is difficult to improve the hardness of the aluminum magnesium alloy and difficult to prolong the service life at present, the cryogenic treatment time has a significant influence on the structure of the 5A06 aluminum alloy, the number of Al3Mg2 phases in the structure is obviously increased with the prolonging of the cryogenic treatment time, the hardness of the alloy can be further improved by adopting the process of deformation superposition and cryogenic treatment, so that the wear resistance is improved, and the service life of the alloy is prolonged.