414results about How to "Low input cost" patented technology

The invention discloses a coated titanium anode and an embedding preparation method thereof, and belongs to the technical field of coated titanium anodes, metal salt powder, an organic additive and inert filler are fully mixed to form embedding agent powder, the mass fraction of metal salt is 45-59%, the mass fraction of the organic additive is 1-5%, and the mass fraction of the inert filler is 40-50%; the sintering treatment is as follows: the pretreated titanium substrate is completely immersed in the embedding agent powder, the sintering temperature is 400-600 DEG C, the sintering time is 1-3 hours, and the heating rate is 5-10 DEG C / min. According to the method, low-temperature sintering is realized by precisely regulating and controlling the components and the proportion of the embedding medium and combining process parameters such as low-temperature sintering, and the damage to a titanium substrate is avoided; and meanwhile, the coating binding force of the titanium anode is improved, the service life of the titanium anode is prolonged, and technical innovation and industrial value are achieved.

The invention relates to the technical field of assembling tools, and discloses a push rod assembly assembling tool which comprises a tool containing base, a mounting groove is formed in the surface of the tool containing base and used for being clamped into a table, the tool adopts a three-in-one integrated design, a push rod assembly is divided into three parts of assembling procedures, the assembling procedures are completed on the same tool containing base in a centralized mode, and the assembling efficiency is improved. The first assembling part is arranged along the Y axis and can synchronously complete pretreatment assembling of multiple sets of guide rod assemblies, the second assembling part arranged along the X axis is matched with the extrusion assembly to achieve pressing-in operation of a plastic cover, the third assembling part is arranged along the Z axis, assembling of a gear and a cover body assembly in a push rod shell assembly is achieved, the transfer time between procedures is greatly shortened, and the connection cost is greatly reduced. And through integrated layout, precise positioning and convenient operation design, the production efficiency is remarkably improved, the product quality is effectively guaranteed, and the labor and equipment investment cost is reduced.

The invention relates to the technical field of optical detection instruments, in particular to a wafer edge multi-surface synchronous optical detection lens system and method, and the system comprises an optical lens which is internally provided with a second reflector; an image acquisition unit; the second lens cone is connected to the optical lens along the emergent light path direction of the second reflector, a main imaging lens group is arranged in the second lens cone and is used for converging and imaging the light received from the second reflector, and the light is acquired by the image acquisition unit; the two reflecting mirror groups are symmetrically arranged on the optical lens and are configured to guide light rays from the upper surface and the lower surface of the wafer to the second reflecting mirror respectively; and the central view field imaging unit is arranged on the optical lens. The wafer edge multi-surface synchronous optical detection lens system solves the problems that in the prior art, due to the fact that a plurality of lenses are used for detecting the upper surface, the lower surface and the side face of a wafer, cost is high, and an optical path is difficult to calibrate.

The utility model discloses a stainless steel pot trimming equipment, including machine table, rotation device, hold-down gear and cutting device, rotation device includes first frame, driving spindle, driven spindle and first drive mechanism, first frame is fixed connection on machine table, driving spindle is horizontally arranged and rotatablely connected on first frame, driven spindle is fixed on first drive mechanism. One end of the driving rotating shaft is fixedly connected with a first flange plate, the first driving mechanism is connected with the other end of the driving rotating shaft and can drive the driving rotating shaft to rotate, and the driven rotating shafts are used for sleeving stainless steel kettles and have different specifications; the first flange plate and the second flange plate are detachably and fixedly connected through bolts; the pressing device is used for pressing the stainless steel kettle onto the driven rotating shaft; the cutting device is used for cutting stainless steel kettles. The embodiment of the utility model can quickly adapt to the machining requirements of workpieces with different sizes.

This application discloses an integrated method and system for the co-production of MTO methanol and refined methanol, belonging to the field of chemical technology. The co-production method provided by this application includes: feeding crude methanol into a light-duty removal distillation column for pre-distillation treatment to obtain a pre-distillation column bottom component; dividing the pre-distillation column bottom component into two streams, one as the output of MTO methanol and the other as a reprocessed component of the pre-distillation column bottom; feeding the reprocessed component of the pre-distillation column bottom into a refined methanol distillation column for distillation treatment to obtain a distillation column top component and a distillation column bottom component; at least a portion of the distillation column top component is output as refined methanol, and the distillation column bottom component is returned to the light-duty removal distillation column. This application achieves the co-production of refined methanol using only two columns, eliminating the need for additional independent equipment, significantly reducing equipment investment costs, and enabling flexible adjustment of both MTO methanol and refined methanol products, thus possessing broad application prospects in the industrial-grade MTO methanol field.

This invention discloses silicon carbide particles and their preparation method, relating to the field of semiconductor technology. Silicon carbide particles with controllable particle size are prepared using a reaction system including a fluidized bed, with an average particle size of 3mm-11mm. The fluidized bed includes nozzles on the inner side of a cone wall, and the focusing point and flow rate of the fluid ejected from the nozzles are set. By controlling the flow rate of the fluid ejected from the nozzles, the particle size of the finished product is precisely controlled, reducing the defect rate caused by substandard particle size and achieving a high particle size yield. The product has controllable particle size and high purity, avoiding the risks introduced by crushing and screening. Furthermore, the production process does not require the disassembly and assembly of a single furnace, enabling continuous production, simplifying the production process, reducing input costs, ensuring product quality, and improving production efficiency, providing a new approach for future industrialization.

The utility model discloses a new type of plugging device of mine anchor cable, including base, the middle part of base is equipped with steel strand channel, the upper end part grouting pipe in steel strand channel, the outer sleeve of grouting pipe is equipped with the plugging pipe, and is equipped with the clearance channel for the slurry through between the outer wall of grouting pipe and the inner wall of plugging pipe, and the upper end part of plugging pipe is provided with the sealing ring outward, the inner wall of sealing ring is equipped with a section of inner recess cavity, and the inner recess cavity and plugging pipe constitute the plugging chamber between, the lower end part of base is equipped with the grouting channel that communicates with steel strand channel, and the upper end part of grouting channel is equipped with one -way channel, and the lower end end portion in steel strand channel is installed with the plugging sealing ring. The utility model has the comprehensive technology of grouting and plugging function, installs with the grouting function together with anchor cable under the condition of not changing the structural property of anchor cable, can reduce cost and has higher economic value, the modelling is exquisite, and the operation process is simplified, and the labor intensity of operating personnel is reduced.

The utility model discloses a washing pump double-water-outlet device which comprises a pump body and a water outlet piece, a pump cavity is arranged in the pump body, an impeller is installed in the pump cavity, a left water outlet guide column and a right water outlet guide column which are communicated with the pump cavity are arranged on the pump body, a water outlet cavity is arranged in the water outlet piece, and a movable valve plate is arranged in the water outlet piece. The movable valve plate divides the water outlet cavity into a left cavity and a right cavity, the water outlet piece is provided with a left butt joint sleeve and a left water outlet which are communicated with the left cavity and a right butt joint sleeve and a right water outlet which are communicated with the right cavity, the left water outlet guide column is matched with the left butt joint sleeve in an inserted connection mode, and the right water outlet guide column is matched with the right butt joint sleeve in an inserted connection mode. When water flows out of the right water outlet guide column, the movable valve plate blocks the right water outlet under the action of water pressure to enable the left water outlet to be communicated, and when water flows out of the right water outlet guide column, the movable valve plate blocks the left water outlet under the action of water pressure to enable the right water outlet to be communicated. The two-way water outlet device can meet the requirement of customers for two-way water outlet of the high-power washing pump, the mold investment cost is saved, and the production efficiency is improved.

This invention relates to the field of automated warehousing technology and discloses an automated storage and retrieval system (AS / RS) based on a heavy-duty stacking robot. A material storage area is located on one side of the material entry / exit area, and a preparation and charging area is located on the other side. An import / export docking area is located inside the material entry / exit area, and a lifting and transferring machine is also included within the import / export docking area. An automated storage and retrieval system with a three-dimensional racking mechanism is located inside the material storage area. This AS / RS based on a heavy-duty stacking robot, through its modular architecture and intelligent collaborative design, effectively solves the problems of low space utilization, high cost, and poor flexibility in traditional AS / RS. It achieves precise and efficient handling of heavy-duty goods, eliminates the need for dedicated tracks, reduces modification costs, and significantly improves the overall automation level, space utilization, and operational stability of warehousing operations. It caters to both new construction and renovation needs, providing enterprises with a low-cost, highly adaptable heavy-duty warehousing solution.

The invention discloses a lipstick raw material mixing system, and relates to the technical field of cosmetic production, the lipstick raw material mixing system comprises a tank body, a cover body, a first motor and a stirring paddle, the stirring paddle penetrates through the cover body and is fixedly connected with the first motor; a grinding seat is fixedly arranged at the inner bottom of the tank body, an inverted-cone-shaped grinding cavity is formed in the grinding seat, an inverted-cone-shaped grinding block is rotationally arranged in the grinding seat, and a supporting column is fixedly arranged at the small end of the inverted-cone-shaped grinding block; a second motor is fixedly arranged at the outer bottom of the tank body and is fixedly connected with the supporting column; at least one circulating device is fixedly arranged on the outer side of the tank body and comprises a circulating main pipe, a first branch pipe, an electric push rod, a second branch pipe and a piston, the circulating main pipe communicates with the inverted-cone-shaped grinding cavity based on the first branch pipe and communicates with the middle space of the tank body based on the second branch pipe, and the output end of the electric push rod is fixedly connected with the upper end of the piston. By integrating the stirring structure, the grinding structure and the circulating device, grinding and stirring collaboration is achieved, the process is simplified, and the mixing uniformity is improved.

The utility model discloses a cooling water system convenient to move, disassemble and assemble, which comprises a water tank, a cooling tower, an integrated pump set, a control cabinet and a container, the integrated pump set and the control cabinet are arranged in the container, and a container door is arranged on the container; water inlet connectors and water outlet connectors of the integrated pump set, the water tank and the cooling tower are quick-assembly flanges, and the integrated pump set, the water tank and the cooling tower are connected through the quick-assembly flanges and external pipelines. The control cabinet is electrically connected with the integrated pump set and the cooling tower. The modularized structural design is adopted, the integrated pump set and the control cabinet are arranged in the container, the integrated pump set and the control cabinet do not need to be independently installed and debugged, during installation, the integrated pump set is connected with the cooling tower and the water tank through an external pipeline, and the integrated pump set is electrically connected with the cooling tower through the control cabinet; reliability and stability of equipment are guaranteed, earlier-stage investment cost of customers is reduced, later-stage extension requirements are met, the installation period is short, and disassembly and migration are flexible and simple.

This application belongs to the field of carbon fiber tube manufacturing technology, and discloses a carbon fiber tube centrifugal forming manufacturing system and process. The carbon fiber tube centrifugal forming manufacturing system includes a mold assembly and a centrifugal drive assembly. The mold assembly includes a module frame, individual frames, and mold components. The module frame is detachably connected to several individual frames, and the individual frames are detachably connected to several mold components. The mold components include a tubular mold with external hexagonal sleeves at both ends and detachably connected plugs at the ends. The centrifugal drive assembly includes a housing, a motor, and a platform. The housing and motor are mounted on the platform. A gear set inside the housing enables the motor to drive the external internal hexagonal sleeve to rotate. The internal hexagonal sleeve and the external hexagonal sleeve are inserted and engaged to drive the tubular mold to rotate and achieve centrifugal forming. This application solves the pain points of existing equipment and processes, such as poor versatility, cumbersome operation, low forming accuracy, and limited efficiency, through synergistic optimization of structure and process.

The utility model relates to the technical field of electric vehicle performance detection, and discloses an open-phase test tool which is used for being installed between a whole vehicle end charging port of a vehicle and an electric control integrated assembly so as to carry out an open-phase test of the electric control integrated assembly. The control chip module is arranged in the shell; the first high-voltage plug-in female head module is arranged on the shell; the first high-voltage plug-in male head module is arranged on the shell and is conducted with the first high-voltage plug-in female head module; the relay module is arranged on the shell, the relay module is located on a line between the first high-voltage plug-in female head module and the first high-voltage plug-in male head module, and the relay module controls the line of the first high-voltage plug-in female head module and the line of the first high-voltage plug-in male head module to be disconnected through the control chip module. Through the mode, the problem of working condition distortion when a traditional rack is used for testing can be solved, and meanwhile, an actual charging pile does not need to be damaged or a high-cost three-phase power supply simulation system does not need to be built.

The utility model relates to an arc-angle drill bit, which comprises a supporting seat, an arc-angle drill bit and an arc-angle drill bit, the multiple arc angle drill bits are arranged on the circumference and are all fixed to the supporting base, and cutting edge parts of the arc angle drill bits are arranged to be in a wave shape; and the multiple discharging holes are formed in the end face of the supporting base. According to the drill bit, the arc-angle drill bit is arranged, and the arc cutting edge of the arc-angle drill bit can disperse cutting stress and reduce the risk of edge tip cracking during drilling, so that the service life of the drill bit can be prolonged, the number of times of drill bit replacement can be reduced, burrs and microcracks on the edge of a drilled hole can be reduced, and the hole wall roughness can be reduced. The supporting seat and the arc-angle drill bit are made of steel, so that the impact resistance is high during drilling, tipping is not easy to occur under intermittent cutting, the price is lower than that of a sintered drill bit, and the practicability is improved.

The utility model belongs to automobile battery pack blanking device technical field, especially including conveying assembly, first detection subassembly, turnover subassembly, second detection subassembly, transfer subassembly and handling assembly. The stamping housing made by stamping device is conveyed to the transfer subassembly with conveying assembly, a plurality of stamping housings are placed in the storage frame with the second mechanical arm and the second end pick-up, and finally the storage frame with the stamping housing is driven away from the stamping processing area by the AVG forklift to realize automatic blanking. The application saves the action of artificial loading and unloading in the detection assembly, is favorable for reducing the investment cost of personnel, realizes the turning and transfer of stamping housing with the mechanical arm, and is favorable for reducing the security risk in the working process and improving the operation efficiency.

The present application provides a kind of nitromethane tail gas treatment method, comprising the following steps: sodium hydroxide or potassium hydroxide aqueous solution and low-grade fatty diol and organic base miscible to form mixed solution after preheating, then nitromethane tail gas is passed into mixed solution and reacts, reaction end product is separated and purified to obtain corresponding sodium nitrite or potassium nitrite product.The present application also provides a kind of nitromethane production method, including the sodium nitrite or hydrogen potassium obtained above as raw material to recycle production nitromethane.The method of the present application solves the problem of nitromethane tail gas treatment, also can turn waste into treasure, reduce production cost, conducive to nitromethane production and environmental protection.

The invention provides a double-layer jacquard fabric interlayer weaving process and a double-vision artistic effect realization method, and the method comprises the following steps: providing warp yarns, weft yarns and interlayer connecting yarns which are adaptive to double-layer jacquard, and the breaking strength of the interlayer connecting yarns is not less than 3.2 cN / dtex; the method comprises the following steps: importing surface layer jacquard pattern data and inner layer jacquard pattern data into a pattern weaving CAD system, presetting a yarn interweaving threshold value and pattern edge transition parameters of an interlayer connection area, generating a collaborative weaving data table of surface and inner layer jacquard and interlayer connection, marking corresponding interweaving areas of surface layer patterns and inner layer patterns, and carrying out collaborative weaving; the collaborative weaving data table comprises intervention opportunities and interweaving frequency parameters of connecting yarns in each region; according to the invention, by switching the connecting structure in different periods, adapting to the characteristics of the jacquard area and combining the parameters of the connecting yarn and the limitation of the interweaving depth, the complete concealment of the connecting points, the accurate alignment of mirror image jacquard of the surface and inner layers, the control of the dislocation amount within 0.15 mm and the complete and non-split double-visual effect are realized, and the visual requirements of high-end fabrics are met.

The utility model relates to the technical field of assembly equipment, and provides a pin piece outer chain piece downward pressing assembly device which comprises a rack, a main bottom plate fixedly installed on the upper portion of the rack, a main material channel arranged on the upper portion of the main bottom plate in an upward protruding mode, and an installation groove formed in the top of the main material channel and used for containing a chain. A pneumatic displacement assembly for driving the positioning plate to slide leftwards or rightwards is arranged at the bottom of the positioning plate and comprises a thrust cylinder and a buffer, the thrust cylinder is arranged on the edge of the upper portion of the main bottom plate, the buffer is arranged on the side wall of the baffle, one end of the buffer is fixedly connected with the baffle, and the other end of the buffer is fixedly connected with the positioning plate. Under the thrust action of the buffer, the side wall of the connecting plate abuts against the push shaft in the thrust air cylinder all the time. The outer chain piece assembling device is easy to operate, can quickly assemble outer chain pieces, and does not need to be manually assembled through tools.

The invention belongs to the field of water pollution monitoring, and particularly relates to an online measurement method for petroleum in water, which comprises the following steps: step 1, water sampling: a trigger unit transmits the detected fluorescence intensity of the water surface to a control unit, and the control unit controls the water sampling frequency of a sampling pump in the water sampling unit according to the fluorescence intensity detected by the trigger unit; step 2, extraction: sending the water sample extracted by the sampling pump into a sample storage container, and extracting oil substances into an extraction reagent; step 3, separation: conveying into a separation container through a conveying pump; and 4, measuring, namely feeding the extraction reagent into a cuvette of a measuring unit for measuring the content of the oil substances. According to the design, a method of combining water surface early warning measurement and underwater quantitative measurement is adopted, pollution occurrence can be judged in time, and the content of underwater oil substances can be measured online, so that pollution sources can be conveniently fed back and controlled in time, and the timeliness of online water environment monitoring is guaranteed.

This invention discloses a medium carbon steel for steering screws in new energy vehicles and its production method. The chemical composition of the medium carbon steel, by mass percentage, is as follows: C: 0.45%~0.70%, Si: 0.25%~0.55%, Mn: 0.45%~1.05%, Cr: ≤0.40%, Mo≤0.40%, Ni≤0.40%, P≤0.035%, S: 0.015%~0.035%, O≤0.0012%, with the balance being Fe and unavoidable impurities. The production method includes a complete process: molten iron pretreatment – ​​converter smelting – LF refining – RH furnace vacuum degassing – continuous casting – rolling – quenching and tempering – finishing – sub-critical quenching – low-temperature tempering. By controlling the composition to reduce the addition of expensive alloying elements, and through a composite heat treatment of "quenching and tempering + sub-critical quenching + low-temperature tempering," a hardness gradient of ≥60HRC on the surface and 22~28HRC in the core is achieved, with no decarburized layer on the surface. Simultaneously, strict control of non-metallic inclusions enhances the purity of the steel. This invention's product is compatible with cyclone milling processes, exhibits minimal quenching deformation, and can be straightened, meeting the high precision and long service life requirements of steering screws in new energy vehicles.

The application discloses a coating die flow field simulation analysis method and system, the method comprises the following steps: constructing a three-dimensional model of a coating quality control system, importing the three-dimensional model into a fluid simulation software, and extracting a fluid region through Boolean operation; segmenting and assigning regions to the extracted fluid domain; obtaining actual process parameters as boundary conditions, inputting the simulation model, dividing the grid of the fluid region, and calculating to obtain the flow field result; post-processing the flow field result to obtain the flow field simulation result, which at least includes the pressure difference distribution and the flow field velocity distribution in the slurry cavity; based on the flow field velocity distribution, determining whether the velocity difference between the center and the edge of the fluid domain exceeds the preset threshold value, if it exceeds, adjusting the coating die structure or the process parameters and re-simulating until the uniformity requirement is met; the application reduces the rectification cost, shortens the optimization cycle, and significantly improves the coating uniformity and the edge quality.

The utility model provides a kind of mixing device of arterial blood collector, including rotating shaft and the mixing assembly being fixed in its outside, and the side plate of polygon is respectively arranged in the two sides of rotating shaft and multiple bearing plates are fixed on side plate, the detachable blood gas needle loading plate is equipped on the bearing plate, and multiple detachable blood gas needle mounting clips are equipped on the blood gas needle loading plate;The blood gas needle mounting clip is detachably set on the bearing plate.By blood gas needle mounting clip detachably set on blood gas needle loading plate, and blood gas needle loading plate itself also detachably install in the design of bearing plate, effectively solve the core pain point of poor versatility of traditional mixing device.

The invention relates to the technical field of heat preservation pipes, in particular to a polyurethane heat preservation pipe heat preservation layer manufacturing process which comprises the following steps that S1, a conveying pipe penetrates through a protection pipe, the two ends of the protection pipe are connected with the conveying pipe through a support, and the protection pipe and the two ends of the conveying pipe are in a concentric state; the material injection opening is formed in the protection pipe, and then the fixing frame is arranged on the conveying pipe. The outer wall of the protection pipe is fixed after pipe penetrating, so that the problem that the thickness of a manufactured heat preservation layer is not uniform due to the fact that the protection pipe is eccentric due to the fact that the protection pipe collapses under the action of gravity is avoided, and therefore on the premise that the use of a wood block support is reduced, the concentricity of the protection pipe and the conveying pipe can still be guaranteed, and the uniformity of the heat preservation layer is guaranteed; in this way, the service life of the polyurethane thermal insulation pipe is prolonged, use of wood block supports is reduced, pipe penetrating can be more convenient, and the manufacturing efficiency of a thermal insulation layer of the polyurethane thermal insulation pipe is effectively improved.

A stepped spraying protection method for tunnel arch changing construction relates to the technical field of tunnel arch changing construction, and comprises the following steps: cutting a steel arch frame position in an arch changing area by using a cutting assembly of a tunnel arch changing construction device; a hole array is formed in the surface of the cut concrete through a hole forming assembly of the tunnel arch changing construction device; the hole array is used for breaking and removing the concrete, and the internal steel arch frame is exposed and replaced; after the replacement operation of the steel arch is completed, a drilling execution unit in the trepanning assembly is detached and replaced with a concrete spraying nozzle connected with a concrete pump; at least two different spraying step positions are formed in the axial direction of a tunnel by controlling a concrete spraying nozzle, filling spraying on the back of the steel arch and covering spraying on the surface of the steel arch are completed in sequence, integrated continuous operation of cutting and spraying supporting can be achieved, the construction precision and efficiency are improved, and the construction cost is reduced. The manual operation intensity and the safety risk are reduced, and meanwhile, the device adapts to different steel arch frame widths and tunnel outlines.

The utility model relates to a kind of natural gas hydrogen-oxygen gas negative pressure mixer structure, including fixed seat, ignition device, gas pipe, hydrogen-oxygen gas pipe and combustion air duct, the gas pipe and hydrogen-oxygen gas pipe are located in combustion air duct inside, combustion air duct front end is provided flame outlet, hydrogen-oxygen gas pipe front end is connected with gas pipeline middle section by jet mixer, gas pipe front end is closed and has gas hole around, gas pipe front end stretches to flame outlet place.The utility model natural gas hydrogen-oxygen gas negative pressure mixer structure structure is novel, reasonable in design, using internal mixing structure, hydrogen-oxygen gas and gas are mixed in burner, avoid the security risk that hydrogen-oxygen gas exists in external premixing, improve safety, and mixed by jet mixer, utilize venturi effect, by the negative pressure formed active suction hydrogen-oxygen gas generated, ensure that mixing is uniform, improve combustion efficiency, reduce energy loss.

The present application relates to plate part processing equipment technical field, disclose a kind of plate reversing processing device and its processing method, to solve the problem of existing technology in the process of taking and placing special-shaped plate, cannot be compatible with standardization magazine, poor feeding continuity and high equipment cost.The device includes machining center, magazine, turnover mechanism, rotary reversing mechanism and feeding mechanism;Turnover mechanism realizes the attitude conversion of plate vertical and horizontal, with opposite direction of taking and placing;Rotary reversing mechanism is used to adjust the angle of plate horizontal;Feeding mechanism realizes the transfer of plate between components.The processing method includes preparation, attitude conversion, angle adjustment, processing, material replacement, angle reset, back box and cycle processing steps.The present application does not need to customize special magazine, can be compatible with existing standardization magazine, solve the problem of special-shaped plate back box misplacement, improve feeding continuity and processing efficiency, reduce equipment investment and production cost, suitable for batch processing of various special-shaped plate.

This invention provides a quick-change mechanism for laser welding pressure heads suitable for different soft-pack batteries, including a welding pressure head base and a welding pressure head. A pressure head connecting part is installed at the front end of the welding pressure head base. The welding pressure head base is movably connected to the welding pressure head through the pressure head connecting part and a connecting mechanism. The connecting mechanism includes a pressure head stop block, two spring pillars, two springs, a pressure head stop fixing block, and two pressure head stop fixing screws. This invention allows welding of the tabs of different soft-pack batteries by changing different types of welding pressure heads; it can improve the utilization rate of welding equipment and reduce the investment cost of welding equipment; the welding pressure head does not require fasteners such as screws for fixation, improving the pressure head replacement efficiency; the welding pressure head can be quickly replaced and is easy to operate.

The application aims to provide a generation method and system of a fiber reinforced recycled concrete three-dimensional mesoscopic model based on Boolean operation, mainly considering the influence of the gradation, shape, replacement rate and old mortar content of recycled coarse aggregate and the influence of the shape, characteristic parameter and unit type of fiber. Meanwhile, the Boolean operation is used to perform collision test on the aggregate and fiber, to quickly generate a fiber reinforced recycled concrete three-dimensional mesoscopic random aggregate model, which can be effectively used to simulate the real damage characteristics of recycled concrete. The method comprises the following steps: step 1, generating a matrix under a given shape; step 2, generating coarse aggregate under a random shape and a given gradation; step 3, generating old mortar on the surface of the coarse aggregate to form recycled coarse aggregate; and step 4, generating fiber under a given shape, characteristic parameter and unit type.

The utility model discloses a safety plugging assembly special for charging and discharging of a new energy automobile, which comprises a charging gun plug, the charging gun plug is respectively provided with a three-pin plugging sheet I and two cylindrical grooves, and probes are fixed in the cylindrical grooves; a slot matched with the charging gun plug is formed in one side of the conversion plug, the charging gun plug is connected with the slot in a pluggable mode, a three-pin jack matched with the first three-pin insertion piece and two protruding columns connected with the two cylindrical grooves in a pluggable mode one by one are arranged in the slot, spring needles are fixed in the protruding columns, and the spring needles are connected with the two cylindrical grooves in a pluggable mode. The other side corresponding to the conversion plug is an external plugging area, a resistor and ground wire hardware are fixed in the conversion plug, two ends of the ground wire hardware are respectively in one-to-one correspondence with the ground wire hole site on the three-pin jack and the external plugging area, one end of the spring needle is in contact conduction with the corresponding probe, and the other end of the spring needle is electrically connected with the ground wire hardware through the resistor. The utility model has the beneficial effect that the purpose of improving the use convenience is achieved.

This utility model provides a modular tooling fixture mechanism for machining triple eccentric butterfly valve bodies, belonging to the technical field of fixture mechanisms. This modular tooling fixture mechanism for machining triple eccentric butterfly valve bodies includes a floating clamping module and a quick-change flange positioning base plate. The floating clamping module is disposed above the quick-change flange positioning base plate and is used to float and clamp the triple eccentric butterfly valve body placed on the quick-change flange positioning base plate. The quick-change flange positioning base plate is used to position the triple eccentric butterfly valve body and realize overall transfer between multiple processes. The floating clamping module includes a main frame and a pneumatic auxiliary locking assembly. The main frame adopts a three-way eccentric adjustment mechanism, which has a built-in adjustable wedge block, and the adjustable wedge block is connected to a screw. This solves the problems of eccentric deformation, cumulative positioning errors in multiple processes, and poor tooling versatility in the machining of triple eccentric butterfly valve bodies, eliminates repeated clamping errors, and improves accuracy and efficiency.