106results about How to "Uniform deformation" patented technology

The invention discloses a device for inhibiting sloshing of a liquid tank, which comprises a plurality of sloshing inhibiting plates arranged in the liquid tank, the plurality of sloshing inhibiting plates are transversely and longitudinally staggered and are not contacted with each other, and the transverse and longitudinal sloshing inhibiting plates work independently and are not interfered with each other; a plurality of damping holes are evenly formed in the oscillation restraining plate, and the oscillation restraining plate is made of elastic materials. The oscillation restraining plate is made of an elastic material, the oscillation of liquid in the liquid tank can be relieved or restrained through the elastic buffering principle of the oscillation restraining plate, and the oscillation restraining plate cannot be damaged; on the basis of U-shaped elastic deformation of the original oscillation suppression plate and vortex generation of a flow field by the circular damping holes, the special-shaped holes are added, so that the fluid oscillation weakening capability of the device can be effectively enhanced.

The invention relates to a manufacturing method of a small-caliber nickel-copper alloy seamless heat exchange tube. The manufacturing method comprises the steps that S1, a UNS N04400 round steel material is subjected to peeling, PT inspection, shearing, centering, grinding, heating, perforating, water cooling and inspection; s2, a hot-punched blank is only cleaned, and inspection is conducted after point grinding is conducted after internal and external polishing; s3, the obtained pipe blank is subjected to first-pass intermediate product cold rolling, deoiling, straightening, pipe cutting, grinding, inspecting and cleaning; s4, second-pass intermediate product cold rolling, deoiling, heat treatment, straightening, pipe cutting, grinding, inspection and cleaning are conducted; S5, finished product cold rolling is conducted; s6, deoiling a finished product; s7, heat treatment of a finished product; s8, straightening a finished product; s9, performing ultrasonic vortex treatment, water pressure treatment and pipe cutting on a finished product; and S10, finished product surface inspection, size inspection, cleaning, mark spraying and finishing procedures are carried out. The method has the advantages of high one-time inspection qualification rate, yield and dimensional precision of products, good inner and outer surface quality, stable structure performance and high practicability.

The invention discloses a manufacturing method of a UNS N06690 alloy seamless heat exchange tube, which belongs to the technical field of material processing, and comprises the following steps of: (1) performing peeling, PT inspection, shearing, centering, grinding, heating, perforating, water cooling and inspection on a round steel material; (2) carrying out acid pickling on the hot-punched blank, and then carrying out incoming material inspection and inner and outer surface grinding; (3) two-pass intermediate product cold rolling is carried out, and after cold rolling, intermediate product deoiling, intermediate product heat treatment, intermediate product straightening, intermediate product pipe cutting, acid pickling, intermediate product grinding and repairing and intermediate product inspection are carried out; (4) carrying out finished product cold rolling; (5) deoiling a finished product; (6) performing heat treatment on a finished product; (7) straightening a finished product; (8) carrying out finished product ultrasonic eddy current, water pressure and pipe cutting, sampling during pipe cutting, and carrying out physical and chemical tests; and (9) the obtained steel pipe is subjected to the procedures of finished product surface inspection, size inspection, cleaning, mark spraying and finishing and finally packaged and warehoused, and the product produced through the method is high in one-time inspection qualification rate and high in yield.

The invention discloses a forging forming method and die for a large hinge beam die forging for an airplane, and relates to the technical field of forging. According to the specific technical scheme, the method comprises the steps of heating before forging, cast ingot forging changing, machining, blank making heating, forging blank making, saw cutting, polishing damage repairing, first heating number heating of die forging, first heating number forging of die forging, first trimming, first corrosive washing damage repairing, second heating number heating of die forging, second heating number forging of die forging, second trimming, second corrosive washing damage repairing and size detection. According to the forging forming method for the 7050 aluminum alloy large hinge beam forge piece for the airplane, the forge piece which is qualified in size and uniform in structure property is obtained, and the use requirement is met.

The invention discloses a grouting type unbonded prestressed system, belongs to the technical field of unbonded prestressed systems, and solves the problem of unsmooth circulation of an anticorrosive medium of an existing prestressed system. The device comprises a protective cover, an anchor plate, a clamping piece, an anchor bearing plate and an unbonded rib, a sinking table is arranged on the side, close to the anchor bearing plate, of the anchor plate, a plurality of through grooves penetrating to the peripheral face of the anchor plate in the radial direction are formed in the portion, on the outer side of the sinking table, of the anchor plate, each through groove is communicated with a circulation hole, the circulation holes penetrate to the other side of the anchor plate, and the clamping piece is arranged on the other side of the anchor plate. Gaps are formed between the other side face and the peripheral face of the anchor plate and the inner wall of the protective cover, and the anchor plate is provided with an installation structure used for installing a pressure-bearing piece during supplementary tensioning. According to the grouting type unbonded prestress system, an anti-corrosion medium can be quickly and uniformly distributed at each corner of an anchorage device, and long-term effective corrosion prevention is provided. The invention further discloses a construction method and a supplementary tensioning method of the grouting type unbonded prestress system.

The invention provides a TC4 titanium alloy thin-wall slender structure liquid cooling plate brazing method, and belongs to the technical field of micro-channel heat exchange. The problems that according to an existing welding method for the TC4 titanium alloy thin-wall long and thin structure liquid cooling plate, the metal brazing connection performance is not stable, a connection interface has defects, and the flatness of the welded thin-wall liquid cooling plate is poor are solved. The thin-wall liquid cooling plate and the slender structural part are buckled and combined, metal foil type brazing filler metal is clamped between the thin-wall liquid cooling plate and the slender structural part to form a TC4 titanium alloy thin-wall liquid cooling plate and slender structural combined part, a graphite pressing block A and a graphite pressing block B are combined and pressed on the TC4 titanium alloy thin-wall liquid cooling plate and slender structural combined part, and after being assembled, the TC4 titanium alloy thin-wall liquid cooling plate and slender structural combined part are put into a vacuum furnace. According to the method, the one-time welding success rate is increased, meanwhile, the brazing seam quality is better, intermetallic compounds of the welding seam are uniform in welding seam microcosmic metallographic display, and the phenomena that the brazing seam is not resistant to pressure and prone to leakage are greatly reduced.

The utility model discloses a magnetic suspension bearing assembly free of secondary processing and a magnetic suspension motor. The magnetic suspension bearing assembly comprises a shell, a magnetic suspension bearing and a leading-out wire, a mounting groove is formed in the top of the shell in the axial direction of the shell. The magnetic suspension bearing is at least partially arranged in the mounting groove; a groove is formed in the bottom of the magnetic suspension bearing, a wire outlet hole is formed in the bottom of the shell, and the groove and the wire outlet hole are arranged side by side in the axial direction of the shell. The leading-out wire can penetrate through the wire outlet hole and the groove from the outside of the shell and is connected with the magnetic suspension bearing. The magnetic suspension motor comprises a motor barrel, a motor stator and a motor rotor. The motor stator is arranged around the inner wall of the motor barrel; the motor rotor is rotationally arranged in the motor barrel in the axial direction of the motor barrel; the magnetic suspension bearing assemblies free of secondary machining are arranged on the two sides of the motor barrel. Through the arrangement, the machining precision of the magnetic suspension bearing assembly is higher. The magnetic suspension motor reduces processing procedures and is higher in assembly efficiency.

The utility model provides a one-way valve which comprises a valve seat and a guide sleeve located at one end of the valve seat, the valve seat is provided with a valve seat through hole penetrating through the two ends of the valve seat in the axial direction of the valve seat, the guide sleeve is provided with a guide cavity, the cavity wall of the guide cavity is provided with a circulation structure, and the one-way valve further comprises a spherical valve element located in the guide cavity and provided with a conduction position and a cut-off position. When the spherical valve element is located at the conduction position, fluid can circulate between the valve seat through hole and the circulation structure, when the spherical valve element is located at the cut-off position, the spherical valve element blocks an opening of the valve seat through hole, the spherical valve element can move in the axial direction of the valve seat through hole under the action of the pressure difference between the two sides of the spherical valve element, and in the using process of the one-way valve, the fluid can flow through the circulation structure. The value of a gap between the spherical valve element and the guide cavity is A, and A is not smaller than 10% of the diameter of the spherical valve element. According to the utility model, the probability that the valve core is stuck due to the size deviation of the guide sleeve after expansion caused by heat and contraction caused by cold can be reduced.

The present application relates to the technical field of conveying equipment, and discloses a conveying device for heat treatment, which is used to solve the problem of uneven wear or deformation of transmission devices inside and outside the heat treatment equipment. The support shaft fixed on the support plate is changed to be set on a large chain, and the large chain can be driven to rotate by a large flywheel, and a power structure is provided on the power shaft of the large flywheel; when loading, the power structure is pushed by the discharge structure, so that the power shaft drives the large flywheel and the large chain to rotate, thereby driving the support shaft and conveying roller on the large chain to rotate, so that the support shaft and conveying roller can cyclically pass through the heat treatment equipment, and all the support shafts and conveying rollers on the conveying device are in the same time inside and outside the heat treatment equipment, thereby achieving the purpose of uniform wear or uniform deformation of the support shafts and conveying rollers of the conveying device.

The invention discloses a high-strength / strong-cubic-texture metal strip and a preparation method thereof, through alloy component design, a proper amount of W, C, Cr, Mo, Cu, V and other elements are added on the basis of Ni alloy, on the premise of improving ferromagnetism, rolling and heat treatment processes are regulated and controlled, heat treatment atmosphere is reasonably matched, and finally the high-strength strip with the strong cubic texture can be obtained.

The invention relates to the technical field of forging, and discloses a high-speed forging machine which comprises a placing table, a forging casting is placed in the center of the top of the placing table, a forging block is arranged over the forging casting, a connecting plate is fixedly connected to the top of the forging block, and a downward pressing assembly for driving the forging block to conduct forging is arranged above the connecting plate. And overturning assemblies for driving the forged casting to overturn are arranged on the two sides of the connecting plate, and the forged casting can be overturned by 180 degrees through the overturning assemblies in the ascending and resetting process of the forging block, so that when the forging block carries out downward pressing forging next time, the other face of the forged casting can be forged by the forging block, and the forging efficiency is improved. According to the method, how to repeatedly carry out cyclic forging, the two faces of a forged casting can be evenly forged, it is ensured that metal obtains even deformation in the whole forging process, the problems of uneven stress and deformation caused by single-face treatment are solved, and therefore the geometric accuracy and the structural consistency of products are improved.

According to the production method of the hot-rolled extra-thick and ultra-wide double-metal composite plate, S30403 is selected as a stainless steel layer, and the stainless steel layer comprises the following chemical components in percentage by mass: 0.02%-0.029% of C, 0.3%-0.5% of Si, 0.8%-1.0% of Mn, less than or equal to 0.04% of P, less than or equal to 0.005% of S, 18.0%-18.8% of Cr, 8.0%-8.2% of Ni and the balance of Fe and inevitable impurities; the base layer is made of Q355B low-alloy high-strength steel and comprises the following chemical components in percentage by mass: 0.06%-0.12% of C, 0.15%-0.3% of Si, 1.45%-1.6% of Mn, less than or equal to 0.02% of P, less than or equal to 0.005% of S, 0.02%-0.05% of Al, 0.008%-0.02% of Ti and the balance of Fe and inevitable impurities; the key process steps comprise assembling, heating, rolling, cooling and finishing, and industrial preparation of the high-performance bimetal composite plate with the width larger than 3.5 m, the total thickness not smaller than 100 mm, the base material larger than or equal to 90 mm and the stainless steel coating larger than or equal to 10 mm is achieved.

The invention discloses a preparation method of a titanium-aluminum intermetallic compound disc with uniform structure properties, relates to the technical field of preparation of titanium-aluminum intermetallic compounds, and provides a method for preparing the titanium-aluminum intermetallic compound disc by combining hot extrusion and vacuum isothermal forging technologies, so that high-quality forming of the titanium-aluminum intermetallic compound disc can be realized. The titanium-aluminum intermetallic compound disc prepared through the method is uniform and fine in microscopic structure and excellent in mechanical property, can meet the service working conditions of disc components for aerospace engines, and has important commercial value.

The invention discloses a method for determining a uniform extension strain limit diagram of a thin plate, comprising pre-test processing, sample loading, strain identification point positioning, strain identification point strain output, strain-time curve drawing, non-uniform deformation critical moment determination, equivalent plastic strain calculation, true strain ratio fitting, uniform extension strain limit diagram drawing, repeating the steps to obtain (r, ε) of the remaining samples. eq ) and plotted in the FLD diagram; at the same time, the (r, ε eq ) take the average value (r, ε eq ) avg Plotted in the FLD diagram and connected. It conforms to the physical meaning of uniform and non-uniform deformation, rather than relying on experience or phenomenology to approximate, and more accurately characterizes the material properties; this method can evaluate the uniform deformation of the material including the strain path from the (-0.5,1) strain ratio, and the evaluation is more comprehensive, which can reflect the uniform deformation capabilities of different materials under different strain paths.

The invention provides a wood-plastic-based composite material with 3D textures and a preparation process thereof, belongs to the technical field of 3D wood-plastic material preparation, and solves the technical problems that an existing wood-plastic composite material is single in function, material textures cannot be customized and the like. The structure of the wood-plastic based composite material with the 3D textures sequentially comprises a functional protection layer, an additive printing texture layer and a wood-plastic base material layer from the surface to the core, and interlayer compounding is achieved through surface heating melting and interlayer mutual pressing. The preparation process comprises the following steps: extruding to prepare a wood-plastic base material, shaping, performing 3D texture printing, laminating and treating a finished product. The composite material is prepared through the processes of extrusion preparation of the wood-plastic base material, cooling and shaping, 3D texture printing, conveying and positioning, synchronous film releasing, film relaxation and oscillation, hot air circulation preheating, multi-angle dynamic air pressure film covering, cold air circulation cooling, film cutting and heat sealing and finished product treatment, the preparation process is high in efficiency and low in energy consumption, and the prepared composite material is good in structure effect and good in application prospect. The multifunctional requirement is met, and the finished product is more stable.

The utility model relates to battery production technical field discloses a kind of sealing ring assembly mechanism and battery production equipment, the sealing ring assembly mechanism includes sealing ring taking and placing device, sealing ring taking and placing device includes multiple expansion claws, multiple push claws and drive module. Expansion claw is equipped with empty slot, push claw is equipped with first push portion, and first push portion is inserted into empty slot and pushes sealing ring top. When working, sealing ring is nested outside multiple expansion claws, and drive module drives multiple expansion claws to be away from each other along radial, to open sealing ring. After aligning target workpiece, drive module drives multiple push claws to push sealing ring top, to push sealing ring to target workpiece direction. Under the action of push force, sealing ring is separated from each expansion claw and is tightened on target workpiece, and the installation of sealing ring is completed. To guarantee the uniform deformation of sealing ring in multiple directions, and accurately installed on target workpiece, avoid the problems such as skew and kick up, improve the sealing performance of battery, guarantee the assembly accuracy and use reliability of battery.

The invention discloses a preparation method of a BT14 titanium alloy large-specification bar, and aims to solve the problems of non-uniform structure and mismatching of mechanical property strength and toughness caused by temperature and strain difference of each part of a blank in the existing bar forging process. According to the titanium alloy structure evolution rule and the deformation distribution characteristic in the blank forging process, the optimal forging technology is determined, and the deformation uniformity of the titanium alloy is improved by adopting a deformation mode combining upsetting, conventional drawing, reversing drawing, diagonal drawing and inverted octagonal drawing. And the alloy structure and mechanical properties meeting the requirements are obtained through optimized forging process parameters, and the quality of large-specification bars is guaranteed. According to the BT14 titanium alloy large-size bar prepared through the method, the grain size in a microscopic structure is effectively reduced, meanwhile, a macrostructure is uniform, and the mechanical property meets the technical requirements of ocean engineering materials; in addition, the preparation heating number is small, energy consumption in the process is low, and the method is suitable for industrial production of BT14 titanium alloy bars with the diameter phi ranging from 400 mm to 500 mm.

The invention belongs to the technical field of tube plate expanded connection, and discloses a solid particle medium tube plate expanded connection method and device. By means of cooperation of the stud and the nut, when the nut is rotated, the plunger moves upwards, solid particle media are compressed under limiting of the pressing plate, then pressure is applied to the high-pressure-resistant rubber ring wrapped in the pipe blank, the pipe blank is deformed through rubber, the pipe blank is tightly embedded into an annular groove formed in a plate hole, and a firm mechanical lock catch is formed; and the expanded connection process is completed. The invention solves the problems that the pipe wall is easy to damage and the surface quality is poor when the traditional pipe expander is used for connecting; the problem that the low-plasticity metal tube blank is difficult to deform due to expansion joint is solved, and the connection quality of the tube plate and the tube is effectively improved. The solid particle medium is used, and the high-pressure-resistant rubber is sleeved on the inner surface of the pipe blank, so that the wall thickness of the pipe blank is uniformly distributed during plastic deformation, the stress distribution is reasonable, and the connection quality is further improved.

The present invention discloses an adjustable wire drawing machine die frame with automatic die positioning, comprising a first base, a second base, a die pit and a pressure plate which are arranged in sequence; the second base is sleeved inside the first base, the die pit is sleeved inside the second base, and the pressure plate is arranged on the top of the die pit; by fixing the upper parts of the first base and the second base, the second base and the upper part of the die pit with rotating shafts respectively, the bottom is exposed to the outside through adjusting bolts which are arranged diagonally to achieve free adjustment of the angles of the second base and the die pit respectively, and the angle of the contact surface between the inside of the die frame and the die can be easily achieved; it is ensured that during the multi-pass metal wire processing, the key pass metal wire can vertically enter the die, so as to achieve uniform deformation and obtain a steel wire with good linearity; and it is also effective to prevent the die from side wear and damage, thereby increasing the life of the die.

The invention discloses a large-size copper blade machining method which comprises the following steps that S1, a blank is placed in a head upsetting tool to be subjected to head upsetting, and a head upsetting blank is obtained; s2, the pier head blank is placed in a pre-forging tool to be subjected to air entraining cavity size pre-forging forming so as to obtain a pre-forged blade, and the pre-forging tool is designed according to a deformation degree calculation formula of the pre-forged blade so as to guarantee that the deformation degree of the pre-forged blade meets the final forging requirement; and S3, the pre-forged blade is placed in a finish forging tool for air-entraining cavity size finish forging forming so as to obtain a finish-forged blade, the finish forging tool is designed according to a die cavity shrinkage amount calculation formula of the finish-forged blade, and the torsion angle amount is increased on the air-entraining cavity tangent plane, close to the blade tip, of the finish forging tool so as to ensure that the air-entraining cavity compensation allowance of the finish forging tool meets the requirement. Compared with the prior art, the air entraining cavity of the large-size copper blade obtained through machining is small and uniform in deformation and high in percent of pass, the production cost can be greatly reduced, and the method is suitable for wide application and popularization.

The invention discloses a three-dimensional fine color model-based arched top mural orthographic expansion automatic generation method, which comprises the following steps of: constructing a three-dimensional fine color model of an arched top mural, segmenting the three-dimensional fine color model, independently partitioning different reference surfaces, and carrying out geometric fitting on the three-dimensional fine color model to obtain geometric parameters of the three-dimensional fine color model; the three-dimensional fine color model is subjected to line scanning orthographic expansion, in the line scanning orthographic expansion process, the three-dimensional fine color model is subjected to one-time pose transformation every time scanning is conducted, a fringe projection drawing is generated, and pose transformation parameters are related to geometric parameters; and the fringe projection drawings generated by the line scanning orthographic projection are spliced in sequence according to the sequence obtained by line scanning, and an orthographic expanded drawing of the arched top mural is generated. According to the method, the conventional curved surface expansion projection thinking is broken through, and the geometric property of the model is fully utilized to unfold the three-dimensional fine color model, so that the obtained two-dimensional orthographic expansion drawing is smaller in deformation, more uniform and higher in efficiency.

The present invention relates to the technical field of rubber performance testing, and specifically to a finished rubber testing device, comprising a base and a guide rail fixed on the base, and further comprising: a first clamping mechanism, wherein two groups of the first clamping mechanisms are symmetrically arranged on the base, and the two groups of the first clamping mechanisms are respectively used to clamp the ends of the rubber strip to be tested, and two supporting rollers are symmetrically and movably arranged on the base, and the supporting rollers are connected to a height control mechanism installed on the base, and the rubber strip passes over the two supporting rollers to form an inverted "U" shape; a threaded driving mechanism can adjust the spacing between the two groups of second clamping mechanisms before performing a pulling action, so as to achieve the effect that the length of the pulled part of the rubber strip decreases during the testing process, while the pulled length remains constant, that is, the tension on the rubber strip is increased by changing the length of the pulled part of the rubber strip and keeping the pulled length of the rubber strip constant.

The invention provides a high-thermal-conductivity isostatic pressing graphite preparation system and method, and relates to the technical field of press machines. The preparation system comprises a feeding device and an isostatic pressing machine, the isostatic pressing machine comprises a high-pressure container, the interior of the high-pressure container is divided into a plurality of cavities from top to bottom, the cavities are in a cuboid shape, the side portions of the cavities are provided with pressurizing and pressure relief systems for controlling the pressure of the cavities to rise and fall, an inserting plate is arranged between every two vertically-adjacent cavities in a sliding mode, and a pressure equalizing pipe is communicated between every two vertically-adjacent cavities. And a valve, a buffer component and a throttling component are arranged on the pressure equalizing pipe. The preparation method comprises the following steps: crushing and grinding raw materials to obtain powder; filling the powder into an elastic mold and sealing; the elastic mold is put into an isostatic pressing machine for isostatic pressing forming; sequentially carrying out primary roasting, dipping, secondary roasting, graphitization and cooling on the formed material to obtain isostatic pressing graphite; and after graphite is cleaned and dried, graphene coating is sprayed and cured. The production efficiency of isostatic pressing graphite is improved by improving the working efficiency of the isostatic pressing machine.

The invention discloses a method for improving a strip-shaped abnormal structure of a TC1 titanium alloy sheet. The method comprises the following steps: step 1, cogging, heating and rolling above a phase transformation point; 2, plate homogenization treatment is conducted above the phase transformation point; 3, reheating is conducted below the phase transformation point, and rolling operation with the deformation larger than or equal to 50% is executed; 4, recrystallization heat treatment is carried out; and 5, a finish rolling process (cold rolling) with the deformation being larger than or equal to 40% is conducted. By controlling the rolling temperature and the rolling deformation, the strip-shaped abnormal structure of the TC1 thin plate can be effectively improved, and the plate structure tends to be a uniform and fine two-phase region machining structure. The deformation resistance of the material can be effectively reduced by regulating and controlling the rolling temperature, internal stress caused by severe plastic deformation in the rolling process is reduced, and uniform deformation of the material is guaranteed. And by controlling the rolling deformation amount, crystal grains in the plate can be fully crushed, and abnormal structures are eliminated.

The application discloses a PEDOT:PSS pre-fracture conductive network electrode and a preparation method and a capacitive pressure sensor thereof, and belongs to the technical field of flexible sensors.The preparation method of the PEDOT:PSS pre-fracture conductive network electrode comprises the following steps: uniformly mixing a PEDOT:PSS polymer aqueous solution and an elastomer matrix, adding a conductive reinforcing agent, and forming a PEDOT:PSS double-network film embedded in the elastomer matrix through heat annealing treatment; a strain is applied to the PEDOT:PSS double-network film, so that a conductive network of the PEDOT:PSS double-network film is fractured; and after the strain is released, the PEDOT:PSS double-network film is reorganized into the PEDOT:PSS pre-fracture conductive network electrode under the constraint and rebounding action of the elastomer matrix network.

The present application relates to a kind of extruded aluminum-wood double-slot type connection's modular structure system of special section, adopt double-slot type connection to form aluminum-wood combination structure module system, and realize the quick splicing between module by cast aluminum piece insertion.The frame member of the aluminum-wood combination structure module unit adopts aluminum alloy extruded special section.Frame node adopts double-slot type connection node, the node is connected by groove with extruded special section frame column using double-slot card, double-slot card is formed by two grooves and a section of vertical plate extrusion, vertical plate is holed, and is connected with frame beam using stainless steel bolt.Frame beam is connected with double-slot card before, and the slot of identical size with double-slot card vertical plate is opened, double-slot card vertical plate is inserted into frame beam, and double-slot card vertical plate is connected with frame beam by stainless steel bolt.

The present invention relates to the technical field of packaged chips, and discloses a fixture for testing packaged chips, including a fixture seat head, a fixed frame is fixedly installed in the middle of the inner cavity of the fixture seat head, a lower suction piece is fixedly installed at the top edge of the fixed frame, and a receiving cavity is opened at the bottom of the inner wall of the fixed frame. The present invention achieves the clamping and fixing of the non-pin side of the chip by setting a movable clamping block, so that the chip cannot easily shake or shift. At the same time, adaptive fixation is achieved. By setting an auxiliary pressure column, the clamping effect of the movable clamping block on the chip is stronger and the anti-shift effect is better, which effectively avoids the problem of chip misalignment and shifting during the test process, thereby affecting the test results. By setting a lower suction piece and an upper suction piece, the downward pressure given by the sealing cover plate on the top of the chip is uniform when manually closed, avoiding the problem of chip surface damage due to uneven force during the existing manual closing.

The utility model discloses an explosion-proof bending device which is arranged on a base. Comprising a bending mechanism and an edge cutting mechanism. The bending mechanism comprises a positioning block and a forming assembly. The forming assembly is arranged on the support, and the support is fixed to the upper surface of the base. The forming assembly comprises a driving piece, the tail end of the driving piece penetrates through the support, and a sliding block and a pressing plate are fixed to the tail end of the driving piece. A forming upper die is arranged on the inner side of the sliding block, and the pressing plate is located on the outer side of the forming upper die. The trimming mechanism comprises a trimming die, and a cutter equivalent to the outline of the inner wall of the fillet sheet metal part is formed on the trimming die; a wedge-shaped groove matched with the bottom end of the sliding block is formed in the trimming die. The sheet metal part bending device has the advantages that the edges of the sheet metal part are bent on the basis of a common bending machine, the corners of the sheet metal part are warped and not broken, then the corners of the sheet metal part with the edges bent are bent, the sheet metal part is integrated and does not need to be fixed in a welded mode, the sealing performance and the overall structure are stable, and the sheet metal part bending device is convenient to use. And the explosion-proof effect can be achieved.

This utility model discloses a medicine bottle, comprising: a bottle body, wherein the bottle body includes, along its own axial direction, a lower liquid storage section, a middle compression and stretching section, and an upper elongated extrusion section, wherein the liquid storage section, the compression and stretching section, and the elongated extrusion section are integrally connected from bottom to top; wherein, applying pressure in the up-down or left-right directions to the bottle body causes the compression and stretching section to undergo axial compression or radial deformation to change the internal pressure of the bottle body, thereby extruding the liquid medicine in the liquid storage section through the elongated extrusion section. This application, through the compression and stretching section located in the middle, allows the bottle body to change its internal pressure through both axial compression in the up-down direction and radial deformation in the left-right direction, thus achieving liquid medicine extrusion. This multi-directional pressing design significantly improves operational flexibility, making it easy to use for the elderly, children, and users with limited hand mobility, effectively expanding the applicable population.

The invention discloses a foundation pit excavation method and device, and belongs to the technical field of foundation pit construction.The foundation pit excavation method comprises the steps that the soil layer number of a current to-be-excavated layer is determined, a soil layer top area corresponding to the soil layer number is determined, a supporting structure is poured to the soil layer top area, and the to-be-excavated layer is excavated; when excavation reaches a specified depth value, whether the soil layer number reaches a preset layer number or not is judged, and if yes, excavation of the foundation pit is completed; otherwise, the next soil layer number corresponding to the soil layer number is determined, and the to-be-excavated layer corresponding to the next soil layer number is subjected to supporting structure pouring and excavation. The foundation pit excavation device is applied to the foundation pit excavation method and comprises the tower crane and the stand column pile. Through the method of staggered-layer excavation and segmented pouring of the supporting structure, the excavation depth and progress of the foundation pit can be accurately controlled, the construction efficiency is improved, the risk of upheaval deformation of the foundation pit is reduced, and the quality of the foundation pit is guaranteed.