2979results about How to "Effectively fixed" patented technology

The invention discloses a water pump shell drilling tool, and relates to the technical field of water pump shell production equipment, the water pump shell drilling tool comprises a workbench and a drill bit arranged on the workbench and used for drilling, and further comprises a hole distance adjusting assembly arranged above the workbench and used for adjusting the hole distance. Comprising a transmission gear ring rotationally connected, a plurality of connecting gears connected to the transmission gear ring in a meshed mode and a transmission rack connected with the connecting gears in a meshed mode to drive a drill bit to adjust the drilling interval. The sub-control assembly is arranged in the hole distance adjusting assembly and comprises a plurality of magnetic plates, and the magnetic plates are connected to the connecting gears; the meshing state of the connecting gear and the transmission rack is controlled by selectively starting the sub-control assembly, so that the distance between the multiple drill bits is accurately adjusted, a user only enables part of the drill bits to work according to actual needs, meanwhile, the other drill bits are kept static, different drilling requirements are met, and the drilling efficiency is improved. The distance between the drill bits can be conveniently adjusted, and drilling of holes with different distances is achieved.

The utility model relates to the technical field of Bailey truss machining, and discloses a building Bailey truss supporting device which comprises a bearing frame, a set of fixing pieces are symmetrically installed at the top of the bearing frame, a supporting frame is fixedly arranged on the fixing pieces, a pushing and clamping mechanism is arranged on the supporting frame, and the pushing and clamping mechanism comprises a pushing rod arranged in the supporting frame and springs distributed on the two sides of the pushing rod. A plurality of rollers are arranged in the middle of the top end of the bearing frame at equal intervals. The rollers are arranged on the bearing frame, so that the bottom of the bailey truss can be supported, the sliding resistance of the building bailey truss can be reduced, the position of the bailey truss can be conveniently and rapidly moved during machining, and the machining efficiency is improved; the clamping distance of the positioning plate to the building bailey truss is adjusted by extruding the spring through the push rod to stretch out and draw back, the device can adapt to bailey trusses of different sizes and shapes, the construction efficiency is improved, meanwhile, the bailey truss can be effectively fixed, and the safety of the construction process is guaranteed.

The invention discloses a preparation process of a silicon dioxide aerogel integrated ball-milling and vacuum adsorption phase-change material, relates to the technical field of phase-change materials, and aims to solve the problems of complicated operation, low efficiency and poor practicability due to the adoption of a conventional dipping-adsorption method during preparation of the phase-change material in the prior art. The method comprises the following steps: step 1, pretreatment: silicon dioxide aerogel felt is fed into a treatment tower through a raw material feed opening, and raw materials enter a crushing chamber for crushing treatment; 2, ball-milling treatment is conducted, specifically, a coarse material enters a ball-milling chamber through a coarse material discharging opening and a ball-milling feeding opening, and coarse material ball-milling is started; step 3, sieving treatment: after ball milling is finished, sieving the silicon dioxide aerogel micro powder layer by layer; and step 4, loading treatment: inputting the silicon dioxide aerogel micro powder into a vacuum adsorption device, inputting octadecane liquid, carrying out vacuum loading in a vacuum chamber of the vacuum adsorption device, and after loading is finished, enabling a product to flow into a loaded product storage tank through a loaded product outlet to be stored.

The invention belongs to the field of electrochemistry, and relates to a method for modifying a zinc-bromine battery positive electrode material by an ionic liquid bromine complexing agent, which innovates the use mode of the ionic liquid bromine complexing agent as an electrolyte additive in a zinc-bromine battery and performs surface modification on an original carbon electrode. The method comprises the following steps: firstly, treating an electrode to improve the surface hydrophilicity and improve the internal pore structure type of the material; then, the ionic liquid is uniformly distributed on the surface of the electrode and in the internal pore diameter in a dipping-ultrasonic-spraying combined mode, uniform modification of an electrode material is realized, and finally, a total battery is assembled to evaluate the practicability of the experimental strategy. Ionic liquid which can have strong interaction with polybromine species is optimized, the defects that the ionic liquid serving as an electrolyte additive and bromine species generate out-of-phase complexation products to be dispersed in an electrolyte, the utilization rate of active substances is low, reaction kinetics is slow and the like are overcome, and by means of effective attachment of the ionic liquid on the surface of an electrode, the reaction efficiency is improved. Effective fixation of bromine species on the surface of the electrode is achieved, and battery capacity loss caused by the shuttle effect of the bromine species is relieved. The method comprises an original electrode pretreatment method, an electrode material modification method and ionic liquid selection. The zinc-bromine battery prepared by the invention has the advantages of high charge-discharge efficiency, low battery self-discharge rate, fast reaction kinetics and the like.

The invention discloses a high-toughness flame-retardant foaming type PVC wood-plastic plate and a preparation method thereof, and belongs to the technical field of building materials. The high-toughness flame-retardant foaming type PVC wood-plastic plate comprises the following components in percentage by mass: 30%-50% of PVC resin, 20%-40% of a polyurethane prepolymer, 5%-30% of wood fibers, 2%-10% of a nano filler, 2%-10% of a flame retardant, 1%-5% of a plasticizer, 0.5%-2% of a foaming agent and 0-1% of other auxiliaries, and the PVC resin and the polyurethane prepolymer form an interpenetrating network structure. According to the invention, the PVC resin and the polyurethane prepolymer are mixed according to a certain proportion to form a PVC / polyurethane interpenetrating network structure, which not only enhances the mechanical strength of the material, but also greatly improves the toughness and impact resistance of the material; the introduction of the nanofiller further enhances the interface bonding force and stress dispersion capability of the material.

A cable descending type unmanned aerial vehicle distribution and delivery device comprises an unmanned aerial vehicle body, an outer protection box is installed at the bottom of the unmanned aerial vehicle body, the bottom of the outer protection box is open, an electric cable descending winch is installed at the top of the outer protection box, the electric cable descending winch is provided with two ropes, and a cable descending box is arranged in the outer protection box; four supporting legs are installed on the lower portion of the cable descending box, and the outer protection box and the cable descending box can be placed on the ground through the four supporting legs. In conclusion, the invention belongs to the technical field of unmanned aerial vehicle cargo distribution, and provides a new thought and direction for the development of the logistics unmanned aerial vehicle technology.

The invention discloses a preparation method of a self-humidifying membrane electrode of a proton exchange membrane fuel cell, relates to a preparation method of a membrane electrode, and aims to solve the technical problem of poor performance of the conventional self-humidifying membrane electrode. The method comprises the following steps: 1, synthesizing a COFs material by using 2, 4, 6-triformyl phloroglucinol and 2, 5-diaminobenzene sulfonic acid through a two-phase method; 2, preparing slurry a by using a Pt / C catalyst and a perfluorosulfonic acid ionomer solution; preparing self-humidifying catalyst layer slurry b from a COFs material, a Pt / C catalyst and a perfluorosulfonic acid ionomer solution; and 3, coating the slurry a on the anode surface of the proton exchange membrane, and coating the slurry b on the cathode surface to obtain the self-humidifying membrane electrode. According to the electrode, H2 / O2 is used as fuel, and the power density is 756.3 mW / cm < 2 > under the relative humidity of 20%; h2 / air is used as fuel, the power density is 437.8-879.7 mW / cm < 2 > under the relative humidity of 50%, and the material can be applied to the field of fuel cells.

The invention discloses a hardware mechanical and electrical product production workbench and relates to the technical field of workbenches, the hardware mechanical and electrical product production workbench comprises a fixing table and a collecting box, toothed bars and sliding rails are arranged at the two ends of the fixing table, an auxiliary assembly is arranged on the left side of the fixing table, and a cutting assembly is arranged on the right side of the fixing table; and the cutting assembly is used for cutting the metal pipe fitting. According to the hardware mechanical and electrical product production workbench, the arc-shaped plate and the supporting frame are ingeniously combined, a metal pipe fitting can be effectively fixed, the stability of the metal pipe fitting in the cutting process is ensured, the metal pipe fitting can be effectively prevented from deforming at the position of a cutting end opening, the deformation prevention measure is crucial to the cutting quality of the metal pipe fitting, and the production efficiency is improved. Therefore, due to the combined use of the arc-shaped plate and the supporting frame, not only is the accuracy of the cutting process improved, but also the overall quality and the use performance of the metal pipe fitting are ensured, and a reliable guarantee is provided for subsequent assembly and use.

The invention discloses a meat strip equally-dividing slitting machine for fresh meat processing, and relates to the technical field of fresh meat processing.The meat strip equally-dividing slitting machine comprises a rotating shaft, the rotating shaft is fixedly connected with a transmission part, the rotating shaft is in transmission with the output end of a motor through the transmission part, the outer side of the rotating shaft is fixedly connected with a cutting part, and the side, close to the rotating shaft, of a protection assembly is rotationally connected with a rotating rod; the cutting piece comprises a rotating disc, the rotating disc is fixedly connected with the rotating shaft, an inclined groove is formed in the edge of the outer side of the rotating disc, a blade is fixedly connected into the inclined groove, a fixing rod is fixedly connected to the outer side, close to the blade, of the rotating disc, and the rotating disc is fixedly connected with the blade through the fixing rod. According to the meat strip equally-dividing slitting machine for fresh meat processing, the blades are obliquely arranged, so that when fresh meat is cut, due to the angle problem of contact between the blades and the fresh meat, the fresh meat can be more easily guided to be cut open in the direction of the blades, notches are smoother, and the quality of produced products is improved.

The invention relates to the field of production of basalt fiber composite rib meshes, in particular to automatic overturning equipment and method for basalt fiber composite rib mesh production. Comprising a turnover table composed of a front supporting plate, a rear supporting plate and a supporting frame, a turnover unit is arranged between the upper ends of the front supporting plate and the rear supporting plate, and a workbench is arranged on the left side of the turnover table. According to the device, the uniformly distributed fixing assemblies synchronously press and fix the mesh in a multi-point and uniformly-dispersed manner, the fixing efficiency is improved, meanwhile, the fixing assemblies are matched with reinforcing steel bar sections on the periphery of the corresponding meshes in a clamping and pressing manner through the clamping groove plates distributed in the circumferential direction, stable and powerful pressing and limiting are carried out on the mesh, and the fixing efficiency is improved. According to the mesh overturning device, the mesh can be effectively prevented from shaking or bending in the subsequent overturning process, the stability of the mesh is improved, the mesh can be fixed, and the mesh is prevented from being deformed or damaged in the overturning process.

The utility model provides an anchoring device for preventing landslide geological disasters, and relates to the technical field of anchoring equipment, the anchoring device comprises an anchor rod assembly, a transmission assembly is arranged in the anchor rod assembly, the transmission assembly comprises a lead screw rotationally connected to the inner wall of the anchor rod assembly, and the upper end of the lead screw penetrates through the top surface of the anchor rod assembly. According to the anchoring device for preventing the landslide geological disaster, a sliding block and a first trapezoidal block can be driven to extrude a second trapezoidal block through rotation of a lead screw, and then the second trapezoidal block drives a push plate and a spine block to move towards the outer side of an anchor rod body till the push plate and the spine block are inserted into soil; the firmness of the device is effectively improved by inserting the push plate and the spine blocks into soil, the anchoring capacity is improved, the device can rapidly anchor the protective net and the protective plate, the anchoring effect is good, and practicability is high.

The utility model provides an industrial explosive composite packaging barrel for a special operation environment, and mainly relates to the field of explosive packaging. An industrial explosive composite packaging barrel used in a special operation environment comprises a shell and a cap body, an opening is formed in the top of the shell, an internal thread part is arranged at the top of the shell, the diameter of the internal thread part is larger than that of the bottom of the shell, an embedding groove is formed below the internal thread part, an external thread part is arranged at the bottom of the shell, and an inserting end is arranged at the bottom of the cap body. A clamping block is arranged on the edge of the outer side of the cap body and matched with the embedding groove, a containing channel penetrating through the cap body is formed in the top of the inserting end, and a wire passing hole is formed in the outer wall between the internal thread part and the embedding groove. The emulsion explosive connecting device has the advantages that stable connection and use of emulsion explosives can be rapidly completed.

The utility model discloses a connecting piece for a truss reinforced concrete laminated slab. The connecting piece comprises an outer box, a first through hole is formed in the center of a top plate of the outer box; a second through hole is formed in the center of a bottom plate; the moving block comprises a horizontal part and a vertical part, the horizontal part is arranged above the top plate of the outer box, and the vertical part is vertically and movably inserted into the first through hole; the two first connecting plates are symmetrically arranged on the two sides of the lower end of the vertical part. The middle of the first rotary extrusion mechanism is rotationally connected with the inner wall of the end plate of the outer box, one end of the first rotary extrusion mechanism is rotationally connected with the extending end of the first connecting plate, and the other end of the first rotary extrusion mechanism penetrates through the side plate of the outer box and then abuts against the side wall of the prefabricated plate body; the threaded rod is vertically and movably inserted into the second through hole; the fixing nut is matched and sleeved on the outer side of the lower end extension part of the threaded rod; according to the utility model, the effect of limiting the prefabricated slab body in the horizontal direction is achieved, the situation that the horizontal position of the laminated slab deviates in the pouring process is effectively avoided, and the positioning precision of the laminated slab is effectively improved.

The utility model discloses a device for double-sided grinding, which comprises a base, wherein a workbench is arranged on the upper end surface of the base; the fixing ring is arranged at the center position of the upper end face of the workbench, a lower grinding disc is fixedly installed on the bottom face of a circular concave hole of the fixing ring, a plurality of first clamping columns which are annularly distributed at equal intervals are arranged on the outer ring of the circular concave hole of the fixing ring, a driving disc is installed at the center position of the fixing ring, and the driving disc is rotationally matched with the fixing ring; a plurality of third movable rings which are annularly distributed at equal intervals are arranged on the outer ring of the upper end face of the driving disc. The movable disc is arranged between the first clamping column and the third movable ring, a plurality of annularly distributed second movable rings are arranged on the outer wall of the movable disc, and the second movable rings are engaged with the first clamping column and the third movable ring correspondingly; and the pressing disc is arranged above the fixing ring, an upper grinding disc is installed at the bottom of the pressing disc, and the grinding quality is improved on the premise that batch grinding of workpieces is achieved.

The invention relates to the technical field of welding fixing equipment, in particular to a corrugated pipe welding device which comprises a rack, a corrugated pipe fixing mechanism and a flange plate fixing mechanism, the corrugated pipe fixing mechanism is used for fixing a corrugated pipe and comprises a mounting base, an air pump, a heater, an air bag and a plurality of fixing rods, the mounting base is fixedly connected with the rack, the fixing rods are slidably connected with the mounting base, the fixing rods are distributed at intervals in the circumferential direction of the mounting base, an air duct is formed in the center of the mounting base, and the air bag is fixedly connected with the mounting base; through an inner fixing structure of the air bag and the fixing rod, the corrugated pipe can be effectively fixed and prevented from shaking in the welding process, and therefore the welding stability and the welding quality are improved; and hot air is introduced into the air bag to preheat the corrugated pipe, so that the welding stress can be eliminated.

The invention discloses an automobile shock absorber technology, and aims to provide a mistake proofing device for spring plate spiral lift point position height and a control method thereof. The technical scheme is that the mistake proofing device comprises a base used for bearing all mechanisms, a rotating table mechanism is arranged on the base, and a liquid storage barrel placing rod is installed on the rotating table mechanism; an expansion head mechanism for expanding and fixing the liquid storage cylinder is arranged at the top of the placing rod; the pressing mechanism is arranged on the rear side of the base and used for pressing and fixing the spring plate; the positioning mechanism is arranged on the base and used for positioning and supporting the spring plate; the detection mechanism is arranged at the bottom of the positioning mechanism and used for precise detection; the control system is connected with all the mechanisms through a PLC and used for controlling all the mechanisms; the control system can also remotely control the welding robot to facilitate subsequent welding work; through a plurality of components such as the base, the pressing mechanism and the positioning mechanism, the accuracy of the mounting, pressing, positioning and detecting processes is ensured; the invention is suitable for the technical field of automobile shock absorbers.

The invention discloses a construction method and application of a ratio-dependent electrochemical luminescence (ECL) biosensor based on an antifouling red cell membrane, and belongs to the technical fields of photoelectric analysis, biosensing and interface antifouling. In the invention, the erythrocyte membrane with super-hydrophilicity and low membrane protein content is used as an efficient antifouling interface, and the good biocompatibility of the erythrocyte membrane avoids the influence of a chemical antifouling coating on the biological activity of the ECL sensor. Meanwhile, the electropolymerized polyaniline nanowire is embedded into the antifouling erythrocyte membrane, so that the chemical stability and the conductivity of the antifouling erythrocyte membrane are enhanced, and the application of the antifouling erythrocyte membrane in ECL analysis is expanded. C3N4 is introduced as an interior label for eliminating background signals and external interference, so that the detection precision of the biosensor is improved. On the basis, the constructed ECL antifouling biosensor realizes ultra-sensitive detection of human breast cancer cells MCF-7 in human serum, and the detection limit is as low as 3 cells / mL.

The utility model relates to the technical field of bridge support machining equipment, in particular to a bridge support machining device. Comprising a workbench, a pressing structure is installed on the workbench, the pressing structure comprises a pressing base slidably connected to the workbench, a supporting spring is installed between the pressing base and the workbench, two pressing blocks sliding relatively are arranged on the pressing base, and pushing shafts are fixedly connected to the two sides of the bottom of each pressing block; a sliding groove matched with the pushing shaft is formed in the pressing base, control plates are connected to the two sides of the pressing base in a sliding mode, compression springs are installed between the control plates and the workbench, and two obliquely-formed driving grooves are symmetrically formed in the control plates; the problems that after a steel pipe is fixed to a workbench, only the upper end face can be welded, the steel pipe needs to be manually detached and turned over, then the lower surface can be welded, and operation is inconvenient are effectively solved. And operation is convenient, the steel pipe needing to be welded can be effectively fixed, and fixed welding is conducted according to the marked size.

The invention relates to the technical field of soil improvement materials, and provides a soil heavy metal pollution repairing agent based on biomass power plant ash, which mainly comprises surface modified porous biomass power plant ash, polymer modified bentonite, a soil modified repairing agent and clay minerals. The surface modified porous biomass power plant ash is obtained through gamma-aminopropyltriethoxysilane and humic acid modified porous biomass power plant ash clustering, and the polymer modified bentonite is bentonite modified by acrylic acid and sodium carboxymethyl cellulose through a polymerization reaction. The preparation method comprises the steps of pretreatment of biomass power plant ash, liquid nitrogen freezing, freeze drying, porous structure formation, surface modification and the like. The components are mixed, granulated and molded, so that the obtained remediation agent can effectively reduce the bio-availability of heavy metals in soil, reduce the heavy metal absorption of crops and improve the soil environment quality.

The utility model discloses a patch welding device for circuit board processing, which comprises a bearing plate, a mechanical arm is fixedly arranged on the top of the left side of the bearing plate, and a placing plate is arranged on the upper side of the middle part of the bearing plate. The circuit board is accurately clamped and moved through the mechanical arm, the circuit board can be effectively fixed through the fixing mechanism composed of the driving motor, the lead screw, the movable block, the sliding block, the fixing plate and the like, the problem of welding dislocation caused by movement of the circuit board in the circuit board patch welding process is solved, and the circuit board patch welding efficiency is improved. Therefore, the welding precision and reliability are obviously improved; a double-end motor drives a threaded rod, a sliding rod, a second movable plate, a connecting rod, a rotating frame and other mechanisms, so that a containing plate can incline forwards or backwards, qualified circuit boards and unqualified circuit boards slide to different conveying belts correspondingly, automatic classification treatment of the welding quality of the circuit boards is achieved, the production process is optimized, and efficiency is improved.

The invention discloses a sludge carbon loaded Schwertmannite immobilized iron-sulfur reducing bacteria composite material as well as a preparation method and application thereof. The method comprises the following steps: performing high-temperature pyrolysis on sludge to obtain sludge carbon; mixing the sludge carbon with a ferrous sulfate solution, then adding a hydrogen peroxide solution to carry out oxidation reaction, and carrying out solid-liquid separation to obtain a sludge carbon loaded Schwertmannite material; and adding the sludge carbon-loaded Schwertmannite material into a culture medium containing iron-sulfur reducing bacteria, carrying out bacterial culture until the culture medium is black, and carrying out solid-liquid separation to obtain the sludge carbon-loaded Schwertmannite material. The obtained mineral microorganism composite material is excellent in adsorption performance, large in adsorption capacity and high in stability, can efficiently remove heavy metal ions such as Sb (V), Cd (II) and Pb (II), and is particularly suitable for repairing heavy metal pollution in mining areas.

The invention belongs to the technical field of heavy slurry pumps, and particularly relates to a heavy slurry pump shell adopting a replaceable structure, the heavy slurry pump shell comprises a base and a rotating mechanism, the rotating mechanism is arranged above the base and comprises a connector, a rotating bearing, a rotating ring and a pump shaft, and the output end of the pump shaft is provided with a pressure reducing sleeve and an impeller; the pump further comprises a pump shell assembly and a protection assembly, the pump shell assembly comprises a pump body and a pump cover which are detachably connected through a locking mechanism, and the protection assembly comprises a rear protection plate and a front protection plate which are detachably connected through a fastener. The pressure reduction sleeve is connected with the pump body and the rear protection plate in a clamped mode, the protection assembly and the pump shell assembly are fixed through the locking mechanism and the fastener, the internal structure can be rapidly disassembled and assembled, the internal structure can be conveniently and independently replaced, the maintenance cost can be effectively reduced, and the working efficiency can be effectively improved. And meanwhile, by replacing the internal structure, the aging of the equipment can be effectively delayed.

The invention relates to a QSFP-DD packaging 400G optical module structure, and belongs to the technical field of optical modules. Comprising a module upper cover, a module base and a pull ring, the module upper cover and the module base form a containing cavity, an MPO optical fiber adapter and a module circuit board assembly are arranged in the containing cavity, and first cooling fins and second cooling fins are arranged on the module upper cover and the module base respectively; the module circuit board assembly comprises a PCB, a heat dissipation block is arranged on the PCB, and a heat dissipation table is arranged on the module upper cover. A module upper cover and a rubber coating area are arranged on the inner side of the pull ring, a pull ring handle is arranged at one end of the pull ring, and the pull ring handle is flush with the bottom of the module base. According to the QSFP-DD packaging 400G optical module structure provided by the invention, the heat dissipation efficiency is remarkably improved, the MPO jumper wire insertion space is optimized, more internal space of the PCB is provided, the signal loss is reduced, the connection stability of the light-transmitting assembly and the silicon optical assembly is enhanced, and the optical signal loss is reduced.

The utility model relates to the technical field of circuit board burning, and provides a clamping device for circuit board burning, which comprises a control box, a burning clamping base, a transition plate assembly, a driving assembly, a vertical displacement adjusting assembly, a burner and a burning probe assembly, the transition plate assembly is arranged above the burning clamping base, the burning probe assembly is arranged on the lower side of the transition plate assembly, the driving assembly is arranged on the vertical displacement adjusting assembly, the vertical displacement adjusting assembly is arranged on the control box, the transition plate assembly is arranged at the output end of the driving assembly, and the burner is arranged on the vertical displacement adjusting assembly. According to the clamping seat, the clamping structure is simplified, the production cost is reduced, the position of the circuit board can be effectively fixed through the matching of the limiting surfaces, the interference between the circuit board and the clamping seat body can be prevented through the arrangement of the electronic element empty slot, and the clamping seat is convenient to use.

The present invention relates to the technical field of fiber bundle fixed-length cutting, and discloses a yarn shearing device for chemical fiber yarn production, including: a yarn winding shearing machine, a winding box is provided on the front of the yarn winding shearing machine, and a group of rubbing and cutting mechanisms and a wire management mechanism are provided in the yarn penetration area of ​​the winding box. When the amount of yarn wound on the winding paper drum reaches a specified value, the wire management mechanism is embedded in the rubbing and cutting mechanism to cut the yarn, and tighten the yarn head away from one end of the winding paper drum. When the present invention is winding, the chemical fiber yarn is tightened, and once the yarn is cut, it will rebound, and then the staff needs to re-manage and thread the wire, so the wire pushing main board, the wire pushing auxiliary board, the wire passing board and the wire pressing middle board can clamp the yarn, which can effectively fix the yarn and prevent the yarn away from one end of the winding paper drum from rebounding.

The present invention discloses a lightweight, high-strength, heat-insulating foam brick prepared by utilizing tailings solid waste resources, belonging to the technical field of foam bricks, including a foam brick, wherein a plurality of limit grooves are provided on one side of the foam brick, a plurality of limit columns are fixedly connected to a side of the foam brick away from the limit grooves, the plurality of limit grooves are adapted to the plurality of limit columns, and two plug rods symmetrically arranged up and down are fixedly connected to one side of the foam brick. In the present invention, by setting a positioning mechanism, when four foam bricks are spliced ​​together, the top block is pulled to drive the pull rod to move upward, the pull rod drives the connecting block to move upward, and one end of the pull ropes is pulled upward at the same time, and under the action of the guide wheel, the pull rope can pull the positioning block to move, and the positioning block moves and retracts into the through hole, so that the positioning block can be inserted into the positioning groove, so that the plurality of positioning blocks can fix the plurality of foam bricks at the same time, and the foam bricks are more stable after being fixed, and will not warp.

The invention discloses a full-size wind tunnel high-load blade, which relates to the technical field of wind tunnel equipment and comprises a metal blade root, a hollow main beam and a blade body, a main beam connecting section is arranged at one end of the metal blade root, and the side wall of the main beam connecting section is a first conical side wall surface; the large opening end of the first conical side wall face is closer to the end, provided with the main beam connecting section, of the metal blade root than the small opening end of the first conical side wall face. The hollow main beam is formed by wrapping a carbon fiber cloth layer; a blade root connecting section is arranged at one end of the hollow main beam and fixedly arranged on the main beam connecting section in a sleeving mode. The inner side wall of the blade root connecting section is a second conical side wall face, and the second conical side wall face is attached to the first conical side wall face. The blade body is made of a carbon fiber material; and the blade body is fixedly arranged on the hollow main beam. The lightweight design degree of the blade is improved, and the lightweight effect of the blade structure is achieved.

The invention relates to the technical field of cloth cutting, in particular to a public security raincoat production cloth cutting device which comprises a cutting table installed at one end of the top of a processing table and a conveying belt fixedly installed at one end of the cutting table. The cutting mechanism comprises a supporting frame arranged on the cutting table and a cutting knife installed on the inner side of the supporting frame, a servo air cylinder is fixedly installed at the top of the supporting frame, a driving transverse plate is detachably arranged on an output shaft of the servo air cylinder, and the cutting knife is detachably fixed to the driving transverse plate. The situation that the cloth is mechanically stretched or deformed in the cutting process to affect the size accuracy of the cut cloth can be prevented, the edge of the cut cloth is smooth and tidy, the cutting quality is guaranteed, the cloth cutting precision and the production efficiency are improved, meanwhile, cloth waste is reduced, the raincoat production process can be optimized, and the production cost is reduced. And the quality of finished products can be improved.

The utility model relates to the technical field of semiconductor manufacturing, and provides a wafer bonding jig and bonding equipment, and the wafer bonding jig comprises a jig body and an isolation unit. The jig body is provided with a bearing area; the isolation unit comprises an isolation base and an isolation piece; the isolation piece is arranged on the isolation base, the isolation base is movably arranged on the isolation base in the direction parallel to the bearing area, the isolation base is provided with a matching face, and the matching face faces the bearing area in the direction parallel to the bearing area. According to the utility model, the structure of the isolation unit is improved, so that the pressing head is linked with the isolation piece in the downward pressing process, and the downward pressing process of the pressing head and the pulling-out process of the isolation piece are kept synchronous.

The invention relates to cream-to-powder oil-control makeup-fixing cream. The cream is prepared from the following raw materials: silica powder, polydimethylsiloxane, a filling agent, a thickening agent, a skin conditioner, petrolatum and microcrystalline wax. The method has the characteristic of unique texture conversion. At a low temperature, because the components comprise petrolatum and microcrystalline wax, the product is kept in a pasty state, and is soft, glutinous and moist when being touched; when the makeup fixing cream is smeared to make contact with the skin, the makeup fixing cream product is heated through the temperature of the skin, petrolatum and microcrystalline wax in the makeup fixing cream product are melted and softened, meanwhile silica starts to absorb grease and form a powdery covering layer, and then the makeup fixing cream is smeared on the surface of the skin continuously in a looping mode and can be converted into fine powder magically. Due to the texture conversion characteristic, the make-up paste has the moistening and fitness of paste and the refreshing and oil control of powder. When in use, the powder can be smoothly smeared like a paste product, and has the refreshing makeup feeling of loose powder, so that the advantages of the two textures are combined.