115 results about "Beryllium copper" patented technology

The utility model discloses a flat opening type threshold-free electric shielding door, and relates to the technical field of shielding doors. Comprising a main door body connected with a door frame through hinges, and a first driving mechanism used for driving the main door body to rotate is arranged on the main door body; the auxiliary door body is mounted on the main door body and is in sliding fit with the main door body in the vertical direction; the movable shielding body is mounted on the auxiliary door body and is in sliding fit with the auxiliary door body in the horizontal direction; the second driving mechanism is mounted on the auxiliary door body and is used for driving the auxiliary door body to lift and driving the movable shielding body to translate; the guide rail is arranged in a door groove in the front side of the door frame; and the moving trolley is in sliding fit with the guide rail, and in the door opening state, the moving trolley slides to the front of the door frame to fill and level up the door groove. The requirement for transferring large equipment is met through the threshold-free design, and meanwhile the beryllium copper reeds can be prevented from being damaged.

The invention discloses a high-frequency transformer sound pressure calculation method, and relates to the technical field of circuits, and the method comprises the steps: obtaining a microstructure parameter of a gap beryllium copper reed to generate a microstructure feature vector; on the basis of the microstructure feature vector, calculating magnetostriction strain of microstructure regulation and control to determine coupling field distribution description of microstructure regulation and control magnetostriction; on the basis of the coupling field distribution description, performing finite element grid division on an air domain around the high-frequency transformer to generate an air domain finite element grid; enabling a gap beryllium copper reed to be equivalent to an acoustic impedance boundary condition, and defining a pseudo-density variable in an air domain finite element grid to determine the optimal sound wave propagation path tracking in the air domain; and calculating the sound pressure of the high-frequency transformer based on the tracked sound wave propagation path. According to the method, the feature vectors are generated by obtaining the structure parameters, the magnetostrictive strain is accurately calculated, grid division is optimized, the calculation precision is improved based on boundary condition processing and multi-link cooperation, and a reliable basis is provided for product design.

The invention relates to a copper-aluminum-based anti-electromagnetic interference cable conductor with a multilayer composite shielding structure, which comprises a conductor core layer, and is characterized in that the conductor core layer comprises a central bearing core and an inner conductor, the central bearing core is formed by twisting aramid fibers and galvanized steel wires, the inner conductor sleeves the outer side of the central bearing core, and the inner conductor comprises three layers of aluminum alloy wires; the three layers of aluminum alloy wires are alternately and reversely twisted, the sliding nesting layer is arranged on the outer side of the inner-layer conductor in a sleeving mode, six copper-aluminum composite half pipes are spliced to form a complete circular ring, T-shaped sliding grooves are formed in the splicing positions of the adjacent copper-aluminum composite half pipes, two conductive sliding blocks are arranged in the T-shaped sliding grooves, the conductive sliding blocks are made of beryllium copper elastomer materials, and the heads of the conductive sliding blocks are provided with gold-plated heads. And the outer conductor sleeves the outer side of the sliding nesting layer and is formed by bunch-stranding annealed soft copper wires in the same direction. According to the invention, excellent bending resistance of the cable is realized, wire breakage of the conductor can be avoided under a repeated bending condition, a conductive path of the conductor core layer is kept continuous and stable in the whole process, and interruption of electric energy or signal transmission caused by bending is prevented.

The invention discloses a small-diameter beryllium copper microwire for an aviation electric connector and a preparation method of the small-diameter beryllium copper microwire, and belongs to the technical field of beryllium copper alloy. The small-diameter beryllium copper microwire is manufactured through the working procedures of homogenizing annealing, extrusion, hot rolling, annealing, primary acid pickling, stretching, secondary acid pickling, bright continuous solid solution, multi-mode stretching and the like, an oxidation film on the surface of the beryllium copper microwire is eliminated through the acid pickling and bright continuous solid solution working procedures, and the surface quality of the beryllium copper microwire is remarkably improved; the beryllium copper microwire subjected to finished product stretching is bright in surface, free of cracks, scratches and other surface defects and stable in mechanical property, the hard tensile strength of the beryllium copper microwire can reach 1100 MPa or above, and the product consistency is good.

The utility model provides a double-layer large-ring injection mold, which relates to the field of injection molding and comprises a front mold structure and a rear mold structure which form an integral injection mold and are used for demolding a product, the lower mold insert consists of a head rubber position and an iron part and is used for rapidly cooling a product; the rear mold thread structure is arranged between the front mold structure and the rear mold structure, so that the product can be left in the rear mold structure; and a parting surface assembly. The opening sequence of the parting surfaces is controlled through the nylon opening and closing device of the parting surface IV, the parting surface I is firstly opened to separate the runner part from the product, and then the parting surface II is opened to separate the front mold insert from the product, so that the wrapping force of the front mold on the product and the deformation of the product are reduced. When the rear mold is demolded, the beryllium copper material at the head glue position of the lower mold insert can quickly cool a product, so that the strength of the product during demolding is enhanced, the problem of ejection deformation caused by incomplete cooling of the product is reduced, and the dimensional accuracy and the appearance quality of the product are effectively ensured.

The utility model discloses a beryllium copper reed with a positioning function, and relates to the field of beryllium copper reeds, the beryllium copper reed comprises a fixing plate, an arc angle, a positioning hook, a limiting plate, a positioning hook and a limiting plate, an elastic plate is of a structure shaped like a Chinese character'chang ', the top of the elastic plate is parallel to the fixing plate in an initial state, the positioning hook is slidably arranged in a limiting groove, and the limiting plate is arranged in the arc angle. One end of the elastic plate is pressed to deform, so that the positioning hook slides up and down in the limiting position, and positioning of the elastic plate is achieved. The positioning hook and the limiting plate are arranged at one end of the elastic plate and one end of the fixing plate respectively, the positioning hook is in sliding connection with the limiting groove formed in the limiting plate, and therefore the positioning hook is limited in the limiting groove, and one end of the elastic plate deforms along with the movement path of the positioning hook. And the elastic plate and the fixed plate are always in an up-and-down correspondence relationship, so that position deviation caused by deformation of the elastic plate is effectively avoided, the elastic plate reaches a preset position when not or elastically reset, and the stability of the reed is greatly improved.

The present invention provides a docking device for an insulator zero value tester, belonging to the technical field of insulator zero value testers. A main unit and an insulating rod, and the insulating rod and the main unit are connected via a docking piece; the docking piece includes a docking platform fixedly connected to the bottom of the main unit, a docking column screwed to the insulating rod, and a groove reserved on the docking platform. The docking piece also includes: a pair of stop platforms movably arranged in groove A; a traction platform 1 movably arranged in groove B; a fastening unit further includes a restraining rod, a right-angle piece, and a spiral beryllium copper wire B, the right-angle piece including a vertical end and a horizontal end. The present invention solves the problem that the main unit and the insulating rod of the existing insulator zero value tester are connected by bolts, and the bolts need to be repeatedly twisted during assembly and disassembly, which is time-consuming and labor-intensive, reduces detection efficiency, and the repeated twisting may cause the bolts to slip, thereby causing the tester to be unable to be used normally, greatly reducing its service life.

The utility model relates to the technical field of reed switches, in particular to a stable and reliable high-voltage-resistant high-power multi-point contact type reed switch. The stable and reliable high-voltage-resistant high-power multi-point contact type reed switch comprises a glass tube, a moving plate fixing rod, a beryllium copper straight elastic piece, a silver contact point, a riveting bolt, a contact point contact piece, a contact lower straight elastic piece and a fixing piece, the glass tube serves as a main body of the reed switch and is of a tubular structure, the glass tube is in a closed state, and the moving plate fixing rod and the silver contact point are fixed through the fixing piece. The glass tube is filled with inert gas, one end of the moving plate fixing rod is fixed to the left side in the glass tube, the fixing plate is fixedly installed on the right side in the glass tube, and the copper-plated straight elastic piece is installed at the right end of the moving plate fixing rod through a riveting bolt. The multi-point contact design of the silver contact point and the contact lower straight elastic sheet and the contact point contact sheet and the fixed sheet is adopted, a stable conduction circuit is formed under the action of a magnetic field, the contact reliability of the reed switch under various working conditions is greatly improved, and the risk of poor contact or open circuit is reduced.

The invention discloses an electrolyte containing ammonium hydrogen fluoride, which takes pure water as a solvent, and each liter of the electrolyte contains 6.1 to 10.3 g of ammonium hydrogen fluoride, 2.2 to 4.2 g of ammonium fluoride, 2.9 to 4.9 g of sodium fluoride and 0.22 to 0.42 g of 2, 5, 8, 11-tetramethyl-6-dodecyne-5, 8-diol; the method is used for treating the beryllium copper surface and comprises the following steps: (1) putting the electrolyte containing ammonium hydrogen fluoride into an electrolytic bath of electrolysis equipment; (2) putting a beryllium copper piece to be treated into the electrolyte in the step (1) as an anode, taking a stainless steel plate as a cathode, and electrolyzing under the action of direct current; (3) the beryllium copper piece subjected to electrolysis treatment is washed with pure water, and then the beryllium copper piece is placed in electroplating liquid for nickel plating; and (4) the beryllium copper piece subjected to nickel plating treatment is washed with pure water and dried to remove surface moisture, and the beryllium copper piece subjected to surface treatment is obtained. The method is safe and reliable to operate, clean and environment-friendly.

The utility model discloses a projection welding device for a nut plate and a plate electrode, which belongs to the technical field of projection welding electrodes, and comprises a nut electrode holder and a nut electrode cover, and a conical compression spring and a KCF positioning pin are arranged in the nut electrode holder and the nut electrode cover. According to the utility model, through differentiated electrode structure design, one side of a thinner welding workpiece is contacted by a smaller electrode, and one side of a thicker welding workpiece is contacted by a larger electrode, so that current can be concentrated on the thin plate side as required, accurate deviation of nuggets is realized, the welding precision is improved, and the production efficiency is improved. Meanwhile, the depth of fusion and nugget at the projection welding spot of the workpiece are obviously increased due to the increase of the current density and the concentration of heat, and the welding strength and reliability are enhanced; the electrode material is changed on the basis of changing the electrode structure, and the beryllium copper electrode with larger resistance is adopted on one side of the thin plate, so that the welding heat on the side of the thin plate is increased.

The utility model discloses a loudspeaker single body with a beryllium copper elastic sheet, which comprises a basin frame, U iron is arranged on the basin frame, a magnet is arranged on the U iron, a washer is arranged on the magnet, a voice coil is arranged outside the magnet and the washer, the voice coil is positioned in the basin frame, a vibrating diaphragm is arranged at the top of the basin frame, and the vibrating diaphragm is positioned in the basin frame. The bottom of the voice coil is provided with a metal elastic sheet, and the metal elastic sheet is made of beryllium copper alloy. According to the loudspeaker monomer with the beryllium copper elastic sheet, the conductivity and the rigidity of the metal elastic sheet can be ensured, and the acoustic quality of the loudspeaker monomer cannot be influenced.

A fluid material analysis and detection device comprises a Brinell fluid detector body, and a calibration beryllium copper spring of the Brinell fluid detector body is sleeved with a corrugated pipe; auxiliary fixing structures are uniformly arranged in the middle of the stabilizing bracket; a positioning clamping block is arranged on the outer wall of a main shaft of the rotor, the rotor is one of a common rotor and a Newtonian fluid test rotor, and clamping grooves matched with the positioning clamping block are formed in the tops of the inner walls of the common rotor and the Newtonian fluid test rotor; and the positioning clamping block is fixedly connected with the clamping groove of the common rotor or the clamping groove of the Newtonian fluid test rotor through a vertically arranged fixing bolt. The problem that in the prior art, when a fluid material analysis and detection device is used for detecting non-Newtonian fluid, the detection error is large is solved.

The utility model discloses an electromagnetic shielding special door, and relates to the technical field of special doors. The electromagnetic shielding special door comprises a bearing type lower threshold, a door frame is fixedly connected to the upper end of the bearing type lower threshold, two door leaves are arranged on the front side of the door frame, an electromagnetic shielding assembly comprises an electromagnetic shielding strip, and electromagnetic shielding beryllium copper spring pieces are fixed to the periphery of the door frame through rivets; monel wire sealing strips are fixedly connected to the upper sides and the lower sides of the two door leaves and the corresponding sides, close to the door frame, of the two door leaves, slotting tool type folded edges are arranged on the peripheries of the door leaves, and electromagnetic shielding strips, electromagnetic shielding beryllium copper spring pieces, the monel wire sealing strips, the door frame and the shielding chamber are fixed through electric welding. After being fixed, the electromagnetic shielding strip covers the gap between the outdoor side door frame and the shielding room steel stand column, the graphite conductive adhesive is filled in the indoor side gap, and through the design of multiple electromagnetic shielding structures, the electromagnetic energy is effectively shielded, and the electromagnetic environment safety of places such as a cabinet and a shielding room is ensured.

The application provides an extremely low temperature regulating needle valve, and belongs to the technical field of low temperature valves. The extremely low temperature regulating needle valve comprises a needle valve, a transport channel one reserved on the needle valve, a connecting block connected to the transport channel one, a pair of ring blocks movably arranged in the connecting block, helical beryllium copper wires fixed to two ends of the ring blocks, a through hole reserved on the ring blocks, a receiving opening reserved at one end of the ring blocks close to the outside of the connecting block, and a flow guide channel one arranged at the upper end of the receiving opening. The application solves the problem that the existing extremely low temperature regulating needle valve is easy to cause the volume of the transport channel two to increase or decrease due to temperature factors during the stage of connecting the transport channel two to transport fluid, so that a gap is generated between the transport channel two and the receiving opening, and the fluid transport efficiency of the extremely low temperature regulating needle valve and the transport channel two is reduced.

The invention discloses a cushion block composite layer for a semiconductor, a preparation method and a cushion block, the cushion block composite layer sequentially comprises a composite coating and a surface microstructure from a substrate close to beryllium copper to a position far away from the substrate, and the composite coating sequentially comprises a chromium transition layer, an alpha-diamond-like carbon layer and a self-lubricating layer doped with tungsten disulfide from a position close to the substrate to a position far away from the substrate. Hard metal carbide reinforced phase crystal grains are uniformly distributed in the alpha-diamond-like carbon layer; the surface micro-texture comprises a plurality of pits, and each pit is filled with a nano-particle solid lubricant; through the structure, the cushion block is compatible with the high process temperature, an additional cooling device is not needed, and the interface shear stress of the composite layer is reduced, so that the copper powder falling amount is greatly reduced, the hardness, the wear-resisting life, the wear-resisting particle penetrability and the high recognition accuracy of the cushion block are greatly improved, and the low friction coefficient of the surface is maintained; and the roughness is still kept at a lower level after the lead frame is carried for multiple times.

The alternating current and direct current two-gear adjustable miniature pressure switch disclosed by the invention can work in a state that direct current is 75V and 2A or alternating current is 240V and 15A. The steam cup comprises a steam cup, a sealing ring, a film sheet, a high-voltage elastic sheet, an elastic sheet butterfly ring, a low-voltage elastic sheet, an elastic sheet combination seat, a push rod, a static contact insertion sheet, a movable contact insertion sheet, a beryllium copper sheet, a magnet, an insertion sheet combination seat, an insertion sheet seat gland, a knob, a knob seat, a knob handle and a torsion spring. Two-gear pressure adjustment can be achieved.

The invention provides a detection device for carbon dioxide leakage, and belongs to the technical field of carbon dioxide detection, the detection device comprises a main channel, a detector main body and a connection unit, the main channel is communicated with a gas inlet channel, the upper end of the gas inlet channel is fixedly connected with an assembly disc I, and the detector main body is provided with an assembly disc II connected with the assembly disc I; the connecting unit comprises a transverse opening reserved in the first assembly disc in a mirroring mode, a first spiral beryllium copper wire is arranged between a transverse strip and the transverse opening, a vertical opening communicated with the transverse opening is reserved in the first assembly disc, a vertical strip movably connected with the vertical opening is fixedly connected to the second assembly disc, a wedge-shaped table is arranged in a movable opening, and the upper wall face of the wedge-shaped table is an inclined wall. A stop opening cooperating with the wedge-shaped table is reserved in the vertical strip, and a closing unit is arranged in the air inlet channel. The problems that an existing detection device for carbon dioxide leakage is not convenient to maintain, the detection device which cannot work is not convenient to replace, and the use convenience is low are solved.

This invention proposes an indirect steam heating device resistant to strong acid corrosion, belonging to the field of steam heating technology for strong acid corrosion resistance. Addressing the technical problems of existing strong acid environment heating technologies, such as acid concentration dilution, poor corrosion resistance of ordinary materials, low heating efficiency of plastic materials, and small heat exchange area, this invention provides an indirect steam heating device resistant to strong acid corrosion in strong acid environments. It achieves the technical goals of not diluting the acid concentration, long-term resistance to strong acid corrosion, and efficient increase in the temperature of strong acid solutions. Furthermore, by optimizing the pipeline layout to increase the heat exchange area, it further improves heating efficiency, meeting the requirements for efficient oxide layer removal in beryllium copper strip production.

The invention discloses a PCB flying probe testing device which comprises a left elastic sheet baffle and a right elastic sheet baffle, a left metal auxiliary seat is arranged on the outer side of the lower portion of the left elastic sheet baffle, and a right metal auxiliary seat is arranged on the side, close to the left metal auxiliary seat, of the right elastic sheet baffle in the same direction. And a left mounting mechanism is arranged between the left metal auxiliary seat and the top end of the left elastic sheet baffle plate and comprises a third metal elastic sheet, a fourth metal elastic sheet and a left probe. Compared with plastic, the metal is more stable, not prone to deformation caused by temperature influence and beneficial to long-time storage and long-distance transportation, the high elasticity of the metal is utilized, the elasticity more excellent than that of the plastic can be shown without high-grade metal, the upgrading space is larger, high-end engineering plastics such as PEEK and PAI are used for the plastic at present, and the application range is wide. And the metal elastic sheet only needs to use common elastic metal such as spring steel or beryllium copper, so that the manufacturing cost can be saved.

The utility model discloses a new energy automobile camera shell relates to new energy vehicle -mounted equipment field. The device includes the shell main part, and the shell main part includes spring, ground pin and connecting assembly, and spring fixed connection is established in the shell main part outside, and ground pin fixed connection is established on one end of spring, and ground pin is opposite with the car body, and connecting assembly includes the car body connecting plate and sliding beryllium copper column, and the car body connecting plate is used for fixed connection in on the car body, and sliding beryllium copper column fixed connection is established on the car body connecting plate, and sliding beryllium copper column sliding connection is established on the shell main part, and spring sliding connection is established outside sliding beryllium copper column, and spring is used for absorbing the kinetic energy between car body and shell main part. The device is through setting up spring and magnetic seal gasket combination and carries out the vibration prevention of certain degree, in addition through the cooperation of magnetic seal gasket and ground pin to the electromagnetic protection of shell main part, prevents the electromagnetic interference of outside to the work of camera.

This invention provides a signal transmission line and a product with signal transmission function, including a transmission line, a heat insulation structure, and a connector. The port of the transmission line is connected to the heat insulation structure. The heat insulation structure has at least three solder pads for soldering and through holes with beryllium copper cladding on the inner wall. Each solder pad communicates with at least one through hole. The connector is soldered to the solder pads and communicates with the transmission line through the through holes. The signal transmission line provided by this invention significantly improves heat leakage of the signal transmission line by adding a heat insulation structure between the connector and the transmission line and connecting the connector and the transmission line through the solder pads and through holes on the heat insulation structure, with minimal impact on signal transmission performance. It also features a simple structure and low cost.

The invention discloses a wall thickness difference cupronickel and beryllium copper foil transition welding method for a CT bulb tube. The method comprises the following steps that S1, materials are pretreated; s2, assembling is conducted, specifically, a copper foil sheet is placed at a ray window in the side wall of the cupronickel tube shell, the inner side and the outer side of the copper foil sheet are both coated with welding flux, a beryllium sheet is placed on the outer side of the copper foil sheet, the beryllium sheet and the copper foil sheet are the same in size and radian, a welding tool is placed on the outer side of the beryllium sheet to fasten the copper foil sheet and the beryllium sheet, and assembling of a to-be-welded assembly is completed; and S3, welding. Through high thermal conductivity and low yield strength of the copper foil, uniform distribution of heat and stress buffering are realized, on one hand, excessive heat gathered by thin-wall cupronickel can be quickly conducted to thick-wall cupronickel, and overall heat distribution is balanced through the heat storage capacity of the thick wall; and on the other hand, the uniform thermal conductivity of the copper foil can reduce the local temperature difference of a welding seam area, micro cracks or air holes generated due to uneven thermal expansion and cold contraction are avoided, and the welding air tightness is improved fundamentally.

A servo actuator comprising an EMI seal positioned between the output shaft and the housing. The EMI seal forms a ring around the output shaft and comprises a plurality of finger springs intermittently positioned around the ring. The finger springs are formed from an electrically conductive material such as beryllium copper.

The utility model relates to the technical field of injection mold accessories, in particular to a rear mold insert capable of reducing the attraction force of a magnet. The rear mold insert is provided with a beryllium copper insert, and the rear mold insert and the beryllium copper insert can define a mounting groove used for mounting a magnet. The utility model further provides an electric wind comb rear cover magnet sleeve injection mold. Compared with the prior art, the beryllium copper insert is arranged on the rear mold insert, and the mounting groove for mounting the magnet can be defined; due to the fact that attraction force cannot be generated between the magnet and the beryllium copper insert, after the magnet is fed to the installation groove, the attraction force of the magnet can be reduced, and the problem that the magnet deviates due to the too large attraction force can be avoided; operators do not need to correct the positions of the magnets subsequently, time and labor are saved, and the production efficiency can be further improved; meanwhile, the attraction force of the magnet is greatly reduced, the magnet can be prevented from cracking when the position is corrected, the magnet can be prevented from cracking when demolding is conducted, and therefore the production reliability and the production yield are further improved.

The present invention relates to a contactor (2) for high-current connection, comprising an elastic support member (6) made of an electrically conductive and elastic alloy material such as beryllium copper, the elastic support member (6) comprising an elastic tab matrix assembly (14) configured by arranging elastic tabs (10) in a matrix on the entire contact bottom side, the elastic connection piece (10) has elastic durability after heat treatment, and is provided with: an elastic leg section (10a) formed by integrally extending from a base section (8) in an inclined direction or in a # imgabs0 # form by matrix X-axis and Y-axis processing on the entire contact section side; and an elastic contact foot part (10b) at the front end of the elastic leg part (10a).

The utility model discloses beryllium copper band heat treatment quenching device, including quenching pool, the quenching pool is divided into three quenching grooves, the both sides middle part symmetrical fixed mounting of quenching pool has the fixed frame, and the corresponding two fixed frame between symmetrical fixed mounting has the limiting rod, and the symmetrical sliding installation of two limiting rods has the positioning frame, and through three quenching grooves in turn to the beryllium copper band after heat treatment cooling, the quenching medium in the quenching groove that beryllium copper band first enters heats up fastest, but the high temperature quenching medium in this quenching groove will not emit to other quenching grooves, and through the high temperature quenching medium in three quenching grooves to the beryllium copper band cooling in turn, improve the cooling effect to beryllium copper band, and through two positioning frames to the beryllium copper band of conveying positioning, prevent beryllium copper band from deflecting, when quenching cooling to the beryllium copper band of different specification width, through the distance between two positioning frames and adjust, realize quenching cooling to the beryllium copper band of different specification width.

The application belongs to the technical field of connection of metal materials, and discloses a diffusion welding method of beryllium copper and tool steel. ‑3 The application discloses a diffusion welding method of beryllium copper and tool steel, which comprises the following steps: (1) polishing and polishing the welding surface of the beryllium copper and the tool steel, and then cleaning; (2) assembling the beryllium copper and the tool steel in a package; (3) sending the assembled package into a vacuum degassing furnace, setting the temperature to 300-350 DEG C, and performing vacuumization on the package in the process, until the vacuum degree reaches 1*10 ‑3 Pa; (4) assembling the degassed package into a hot isostatic pressing device, and then performing hot isostatic pressing, using a protective gas as a pressure medium, setting the hot pressing temperature to 600-650 DEG C, setting the pressure to 100-130 Mpa, and setting the holding and pressure maintaining time to 2-4 h; (5) after the hot isostatic pressing is completed, furnace cooling is performed, then the package is cut open, and the beryllium copper-tool steel diffusion welding finished product is obtained. The beryllium copper-tool steel diffusion welding finished product prepared by the application has a high welding surface bonding rate and good tensile strength.

The shielding structure comprises a door frame, a left door plate and a right door plate are hinged to the two sides of the door frame respectively, a door handle is fixedly connected to the left side of the right door plate, a plurality of sets of air cylinder clamping mechanisms are fixedly connected to the upper side and the lower side of the door frame respectively, and each air cylinder clamping mechanism comprises an air cylinder. The air cylinders are fixed to the upper side and the lower side of the door frame, connecting rods are hinged to the output ends of the air cylinders, pressing plates are hinged to the other ends of the connecting rods, auxiliary blocks are hinged to the middles of the connecting rods, and the bottoms of the auxiliary blocks are fixedly connected with the door frame. The push-pull clamping mechanism comprises a push-pull base, the push-pull base is fixed to the middle of the left door plate, and a mounting base is fixedly arranged at the top of the outer surface of the push-pull base. The utility model has the characteristics that the beryllium copper reed abrasion can be solved, and the shielding function is perfected.

The invention discloses a method for preparing a mother alloy for beryllium bronze from beryllium copper residues, and belongs to the technical field of beryllium bronze preparation. The method comprises the following steps: crushing a filter screen bonding material and a furnace bonding material, and screening to obtain particles; the screened particles of the binding material and the binding furnace material are pressed, and blocky beryllium copper residual materials are obtained; the preparation method comprises the following steps: preparing blocky beryllium copper residual materials and electrolytic copper according to a beryllium copper master alloy to be prepared, and then drying; the dried blocky beryllium copper residues and electrolytic copper are put into a crucible of a vacuum induction melting furnace, gradient heating melting is carried out in a vacuum state, and molten metal is obtained; the molten metal is heated, refined and fully stirred, then protective gas is inflated into the vacuum induction melting furnace to reach the atmospheric pressure, and after standing is conducted, dross on the surface of the molten metal is removed; and the molten metal with the scum removed from the surface is cast into a mold, demolding is conducted after natural cooling, and the beryllium-copper master alloy is obtained. The beryllium content of the mother alloy for beryllium bronze is high, and the preparation requirement of the high-beryllium beryllium copper alloy can be met.

The utility model discloses a battery test probe, which comprises a probe mounting seat, a probe assembly and a probe mounting seat, the probe assembly comprises a probe rod main body and a probe head, the probe rod main body is arranged in the probe base in a penetrating manner, a mounting groove is formed in the probe head, the probe rod main body is embedded in the mounting groove, and the probe head is used for being in contact with a tab of a battery to be detected for detection; the probe rod main body is provided with a buckling part, the probe head is provided with a buckling part which can be matched with the buckling part, and the probe rod main body and the probe head are clamped through the buckling part and the buckling part; wherein the probe rod main body is made of beryllium copper, and the probe head is made of brass. The battery test probe is simple in processing technology, the probe rod main body and the probe head are formed in a split manner, the probe rod main body is made of beryllium copper, the probe head is made of brass, and the brass is low in price, so that the production cost of the battery test probe is greatly reduced.