22results about How to "Close bite" patented technology

The present invention discloses a device, a sample and a method for detecting the dynamic mechanical properties of materials, and belongs to the field of dynamic mechanical properties test of materials. The middle part of the sample is an electromagnetic force stretching section, and a transition section, a high-speed stretching section and a clamping section are respectively extended outward from both ends of the electromagnetic force stretching section in sequence. The larger width of the electromagnetic force stretching section is transitioned to the smaller width of the high-speed stretching section through the transition section. The device is based on electromagnetic forming technology and online measurement technology. The electromagnetic forming charge and discharge system controls the charge and discharge of the electromagnetic forming coil. During the detection process, the uniform magnetic field formed by the electromagnetic forming coil applies a uniform electromagnetic force to the electromagnetic force stretching section; a high-speed camera is used to collect the deformation of the high-speed stretching section, and a strain collector collects the strain of the transition section. The dynamic mechanical properties of various materials can be measured in real time and directly, and it has the advantages of wide test range, good test stability, high test accuracy, good repeatability, long equipment life, short test cycle and low cost.

The application discloses a biomimetic urchin-shaped asymmetric structure composite phase change chitosan aerogel loaded with TiO2 / rGO heterojunction and a preparation method and application thereof, adopts argon plasma etching GO, step-by-step dropwise adding tetrabutyl titanate to prepare TiO2 / rGO heterojunction; prepares a multi-level structure phase change microcapsule by an interfacial polymerization method; mixes the heterojunction with a chitosan solution, and prepares a biomimetic urchin-shaped asymmetric chitosan aerogel framework through a customized asymmetric mold and a unidirectional freezing process; fixes the phase change microcapsule by a vacuum-assisted impregnation method, and then performs in-situ coating through polydopamine to obtain the biomimetic urchin-shaped asymmetric structure composite phase change chitosan aerogel loaded with TiO2 / rGO heterojunction, the removal rate of VOCs of the biomimetic urchin-shaped asymmetric structure composite phase change chitosan aerogel loaded with TiO2 / rGO heterojunction is greater than or equal to 80% at low temperature, the phase change microcapsule dispersion rate is less than or equal to 3% after 100 cycles, the structural stability and the cycle durability are excellent, and the biomimetic urchin-shaped asymmetric structure composite phase change chitosan aerogel loaded with TiO2 / rGO heterojunction is suitable for efficient purification of VOCs in low-temperature closed scenes such as cold chain workshops and indoor environments in winter.

The utility model provides a mortise and tenon type locking structure and a display screen, the mortise and tenon type locking structure is used for detachable connection of an installation main body and a fixed main body, and the mortise and tenon type locking structure comprises a lock shell, a locking piece, a locking piece, a locking piece and a locking piece, the lock shell is fixed on the fixed main body, and a limiting groove is formed in the lock shell; the acting piece is arranged in the lock shell and can reciprocate in the direction perpendicular to the fixed body, and a first inclined guide face and a first self-locking face connected with the first inclined guide face are arranged on the acting piece; the locking assembly comprises a guiding piece, a first elastic piece connected with the guiding piece and a spring bolt arranged at one end of the guiding piece, the guiding piece is arranged on the limiting groove in a sliding mode, and the other end of the guiding piece is provided with a second inclined guiding face and a second self-locking face which are matched with the first inclined guiding face and the first self-locking face; the display screen mounting structure solves the problem that a display screen mounting structure in the prior art cannot simultaneously meet the stable fixing requirement and the quick assembly and disassembly requirement of a large-size display screen.

This invention discloses a slope reinforcement device for engineering safety, specifically relating to the technical field of slope reinforcement devices. It includes a fixing rod, a sleeve rod fixedly connected to the inner surface of the fixing rod, an injection pipe flush with its upper end fixedly connected to the inner surface of the sleeve rod, an engagement component slidably mounted on the outer surface of the sleeve rod, and a mixing component fixedly mounted at the lower end of the fixing rod. This slope reinforcement device for engineering safety, through its engagement component, can pre-fix the slope surface during half-slope reinforcement. Furthermore, the engagement component can cooperate with the mixing component during fixing, making the overall fixing operation simple and easy. Simultaneously, the mixing component can stir the slurry added during slope reinforcement and disperse air bubbles in the slurry, preventing residual air bubbles from affecting the overall slope reinforcement effect.

The utility model discloses a photovoltaic support accessory is bent and is used positioning device, including bottom plate, be provided with bending assembly on the bottom plate, the bending assembly includes support column and top plate, support column sets up at the place of four corners of bottom plate, top plate sets up on support column, install and be equipped with the placing seat on the bottom plate, set up and place the groove on the placing seat, slidingly connected and equipped with the abutment plate on the placing seat, be equipped with the fixed component on the placing seat and abutment plate, the fixed component includes fixed sleeve and mobile cover, fixed sleeve fixed mounting is on the abutment plate, mobile cover slidingly connects in fixed sleeve, be equipped with the rotary rod with rotation connection on mobile cover, to solve the technical problem that the whole bending of the existing device mentioned in the background art cannot conveniently complete to the hoop in the use process.

The invention discloses a self-locking bolt and nut assembly which comprises a bolt, a nut and a detection mechanism, the bolt and the nut can be in threaded connection and jointly clamp a to-be-fixed part, the detection mechanism comprises a lower substrate, a wire, a detector, a fixed contact and a movable contact, the fixed contact is arranged in the lower substrate and can be installed between the to-be-fixed part and the nut, and the wire is connected with the detector. The movable contact is installed on the nut and can be in contact connection with the fixed contact when the nut is screwed down, the fixed contact and the movable contact are connected into the detector through wires, and the detector can judge whether the fixed contact and the movable contact are in contact connection or not according to whether the energizing loop is kept conducted or not. Whether the nut is loosened or not can be monitored in the first time, the work overhaul frequency of workers can be effectively reduced, and the labor cost is saved.

The utility model discloses an electric vehicle awning windowing device which comprises a front blocking support and a window support, a screw transversely penetrates through a clutch wrench and a fixed part, the tail end of the screw is connected with a movable part, and the first end of the fixed part is provided with two or more sections of rotationally symmetrical fan-shaped slopes A matched with fan-shaped slopes B arranged on the inner side of the clutch wrench. First positioning teeth arranged at the second end of the fixed part are meshed with second positioning teeth arranged on the outer end face of the movable part. The fan-shaped inclined plane A radially slides relative to the fan-shaped inclined plane B to generate axial displacement by rotating the clutch wrench, so that the fixed part and the movable part are quickly separated and jointed, the opening angle of the window is easily adjusted, and the window opening angle adjusting device is simple and quick to operate, stable in structure and good in durability.

The utility model discloses a lathe feeding mechanism, and relates to the technical field of lathe machining. The lathe feeding mechanism comprises a base and a cleaning assembly, a feeding frame is arranged at the top of the base, the cleaning assembly is arranged on the feeding frame, the cleaning assembly comprises two sets of annular pipes and spray heads, the annular pipes are symmetrically distributed, and the spray heads are fixedly installed on the outer walls of the annular pipes. Through the arrangement of the cleaning assembly, the spray heads can effectively clean cuttings, greasy dirt and other impurities generated in the machining process, the impurities are prevented from being attached to the surfaces of the gear and the toothed plate, the subsequent machining or measuring precision is prevented from being affected, the stability of the machining precision is kept, the cuttings can be cleaned in time through synchronous movement of the spray heads, cuttings accumulation is reduced, and the machining efficiency is improved. And abrasion is reduced, meshing between the gear and the toothed plate is tighter, operation is smoother, efficiency is improved, the service life of the gear and the toothed plate is prolonged, meanwhile, time waste caused by manual cleaning is avoided, and the machining process is smoother.

The invention discloses a construction method of a foldable vertical shaft water-resisting layer. The problems that in the prior art, the construction period of a shaft occupied by water-resisting layer construction is long, the high-altitude operation risk is high, and grouting is difficult are mainly solved. The method comprises the following steps: prefabricating a cylindrical rubber membrane water spacing ring on the ground; after a water-resisting layer section shaft is excavated by 1-2 m, the water-resisting layer section shaft is lowered and radially unfolded to form a circular ring, and the circular ring is folded and fixed to the lower portion of the upper section shaft wall; continuously excavating to a complete section height and then loosening and fixing, so that the water spacing ring is vertically unfolded to be attached to the well side; a blade foot formwork and a grouting pipe are installed, reinforcing steel bar binding and sand filling treatment are conducted on a gap between the blade foot formwork and the well side, and the bottom of the water spacing ring is rolled up and embedded; and after the section of well wall concrete is poured, grouting is conducted on the gap between the water spacing ring and the stratum through the pre-buried grouting pipe. According to the method, by means of folding design and segmented construction of the water-resisting ring, the water-resisting layer mounting process and the digging and building process are conducted in parallel, and the construction period is greatly shortened; grouting is independently carried out after concrete pouring, and the filling quality is guaranteed; the construction process is safe, efficient and low in labor intensity.

The invention discloses an inflatable chuck for a coiled material barrel core. The inflatable chuck comprises an outer barrel body, an air bag, a wedge block seat, an inner barrel body, a plurality of wedge blocks, a plurality of key bars and an axial spring. An inflation hole is radially formed in the hole wall corresponding to the rear inner hole of the outer cylinder body; a plurality of key bar insertion holes are uniformly formed in the hole wall of the front inner hole; the air bag is clamped between the air bag seat and the air bag cover plate; the rear air bag seat is mounted in the rear inner hole of the outer cylinder in a manner that the outer port of the air passage is aligned with the inflation hole in the outer cylinder; a plurality of sliding grooves with shallow rear parts and deep front parts are uniformly formed in the outer circumferential surface of the wedge block seat in the circumferential direction; a plurality of wedge block insertion holes are uniformly distributed on the circumference of the cylinder wall of the inner cylinder body; a plurality of wedge blocks are inserted into a plurality of sliding grooves in the wedge block seat and a plurality of wedge block insertion holes in the inner cylinder body in a one-to-one correspondence manner; the plurality of key bars are inserted into the plurality of key bar insertion holes in the outer cylinder body in a one-to-one correspondence manner; and the axial spring is arranged in an inner hole of the wedge block seat. The coiled material cylinder core tensioning device can stably and reliably tension and fix coiled material cylinder cores with different hole diameters.

The utility model discloses a high-altitude construction platform unloading block supporting device, and relates to the technical field of building construction auxiliary equipment. The device comprises a first trapezoidal hollow steel wedge block, wherein a second trapezoidal hollow steel wedge block is arranged at the top end of the first trapezoidal hollow steel wedge block, and the first trapezoidal hollow steel wedge block and the second trapezoidal hollow steel wedge block form a box body; through the arrangement of the finish rolling screw rod and the high-strength bolt, when the high-strength bolt and the finish rolling screw rod are tightened and pulled oppositely, the inclined surfaces on the first trapezoidal hollow steel wedge block and the second trapezoidal hollow steel wedge block slide towards the middle, so that the purpose of adjusting the elevation is achieved, and the first trapezoidal hollow steel wedge block and the second trapezoidal hollow steel wedge block are fixed together; meanwhile, the cross-core rods are inserted into the corresponding round holes, so that the inclined falling blocks are installed on the pier columns more firmly and are meshed tightly, the instability phenomenon is avoided, safety and reliability are achieved, operation is easy, work efficiency is high, turnover utilization is convenient, and cost is saved.

The utility model discloses a blood transfusion apparatus connector structure with a backflow stopping structure, which belongs to the technical field of blood transfusion apparatuses and comprises a connector structure main body, the connector structure main body comprises a first connector and a second connector, a first connecting pipe is fixedly mounted on the outer surface of the first connector, and a second connecting pipe is fixedly mounted on the outer surface of the second connector. A first connecting pipe is fixedly installed on the outer surface of the first connector, a second connecting pipe is fixedly installed on the outer surface of the second connector, the first connecting pipe and the second connecting pipe are used in cooperation, two rotating shafts are rotatably installed on the inner wall of the first connecting pipe, backflow preventing plates are fixedly installed on the outer surfaces of the rotating shafts, and a blocking ring is fixedly installed on the inner wall of the first connector. The anti-backflow plate is arranged to be matched with the rotating shaft for use, the anti-backflow plate can be opened under the blood conveying effect during blood transfusion, the anti-backflow plate can be reversely rotated to be closed when blood return occurs, the effective anti-backflow effect is achieved, a good anti-backflow effect is achieved, meanwhile, the first connecting pipe and the second connecting pipe are matched for use, threaded connection and tight occlusion are achieved, and the anti-backflow effect is good. And loosening and falling cannot easily occur.

The utility model discloses a belt buckle head with double-unlocking and opposite-inserting functions. The belt buckle head comprises a lock head assembly and a lock groove assembly. The lock head assembly comprises a buckle head main body, a pressing unlocking main body arranged on the buckle head main body, and a tooth belt pressing mechanism and a wearing part which are arranged at the bottom of the buckle head main body; the lock groove assembly comprises a lock groove body and a shifting unlocking body arranged at the bottom of the lock groove body. According to the belt buckle head with the double-unlocking and opposite-inserting functions, the two unlocking modes of pressing and shifting are provided, the requirements of different use scenes are met, and the flexibility is high; unlocking by pressing: the key pressing operation is stable; the reset spring ensures that the structure reset spring bolt mechanism is tightly meshed with the lock groove main body, and locking is reliable; the buckle hook mechanism is matched with the pivoting part, the double-unlocking automatic internal penetrating belt buckle head is suitable for various belts, rapid unlocking can be achieved, and the requirements of rapid unlocking, convenience and rapidness under the use condition of consumers are met.

The invention provides a composite pole piece, a preparation method thereof and a lithium ion battery. The preparation method of the composite pole piece comprises the following steps: conveying an electrode pole piece through an electrode pole piece unwinding mechanism, so that the electrode pole piece passes through a gap between a heating mechanism and a shaping roller assembly; a solid electrolyte membrane is conveyed through a solid electrolyte membrane unwinding mechanism located on the side edge of the electrode piece unwinding mechanism, so that the solid electrolyte membrane passes through a gap between the shaping roller assembly and the electrode piece; preheating the electrode plate through a heating mechanism to obtain a preheated plate; and carrying out rolling compounding on the preheating sheet and the solid electrolyte membrane through a shaping roller assembly to prepare the composite pole piece. The composite pole piece prepared by the preparation method disclosed by the invention is good in composite effect, inconsistent in transverse compaction density and poor in transverse thickness consistency.

The invention discloses a yak milk filter vat which comprises a vat body, a cooling water pipe is wound on the outer side of the lower portion of the vat body, the tail end of the cooling water pipe is connected with a water pump, the upper portion of the vat body is fixedly connected with a liquid inlet pipe, and a filter layer is arranged on the lower portion of the liquid inlet pipe. The bottom of the barrel body is fixedly connected with a liquid outlet, and the liquid inlet pipe is fixedly connected with a quick release valve. The yak milk cooling and filtering device can overcome the defects in the prior art, yak milk can be rapidly cooled and filtered, and meanwhile, pipelines are convenient to mount and dismount.

The invention belongs to the technical field of insulators, particularly relates to a direct-current disc-shaped suspension type glass insulator, and aims to solve the problem that an insulator fails due to the fact that an insulator glass disc is easily expanded and cracked by an internal metal core rod of the insulator under the condition of thermal expansion in the prior art. Comprising a hanging rod and a glass disc integrally of an inverted bowl-shaped structure, a ridge protrusion is reserved at the top end of the glass disc, the circumferential outer wall of the ridge protrusion is sleeved with a clamping female head, the whole clamping female head is of a cylindrical structure, a first cylindrical sinking groove is formed in the bottom end of the clamping female head, and a second cylindrical sinking groove is formed in the bottom end of the clamping female head. A protection inner clamping ring is connected to the circumferential inner wall of the first cylindrical sinking groove in a clamped mode and is made of a rubber material. According to the invention, the clamping female head made of a metal material can be prevented from being directly contacted with the glass disc made of a glass material, so that the overall failure of the insulator caused by extrusion cracking of the glass disc due to thermal expansion or cold contraction of different materials can be avoided.

The invention discloses a mechanical sealing element device for a self-lubricating reaction kettle, which comprises a mounting seat fixedly mounted at the top of the reaction kettle, a stirring motor is fixedly mounted on the mounting seat through a mounting frame, an output shaft of the stirring motor is fixedly connected with a stirring shaft, and the bottom end of the stirring shaft rotatably extends into the reaction kettle and is fixedly connected with a stirring paddle; a mechanical sealing bearing is fixedly mounted at the top of the reaction kettle; the stirring shaft is rotationally mounted on the mechanical sealing bearing in a sealing manner. The amount of lubricating oil can be automatically added and regulated according to the real-time working condition of the reaction kettle, the regulated oil supply amount is very stable, the sealing performance of sealing pieces such as mechanical sealing bearings is greatly improved, and the service life of the sealing pieces is greatly prolonged; in this way, the complex and changeable working environment of the reaction kettle can be better adapted, precise control and self-adaptive adjustment of the lubricating oil amount are achieved, the sealing performance and reliability are greatly improved, the maintenance cost is reduced, and the service life is prolonged.

The present invention discloses a method for manufacturing a package substrate and an electroplated copper column thereof, comprising the following steps: providing a copper-clad substrate; depositing a first chemical copper layer and a first electroplated copper layer on the surface of the copper-clad substrate; performing lamination, exposure, development, etching and film stripping based on the copper-clad substrate to obtain a first graphic layer; laminating a solder mask layer on the surface of the first graphic layer; opening the solder mask layer by laser drilling equipment, and depositing a second chemical copper layer on the solder mask layer; obtaining a second graphic layer by using an MSAP process; laminating a solder mask dry film layer on the solder mask layer, and forming an opening on the solder mask dry film layer by a lithography process; forming a third chemical copper layer and a third electroplated copper layer on the solder mask dry film layer; and stripping and etching to obtain an electroplated copper column. The present invention forms a copper column above the solder mask layer to replace the original solder ball, and the electroplated copper column is turned on, having better electrical properties and reliability; the roughening of the solder mask dry film layer makes the solder mask and the electroplated copper bite more tightly, thereby increasing the bonding force between the solder mask and the copper column.

The utility model relates to the technical field of cylindrical part overturning supports, and discloses a large cylindrical part overturning support which comprises a fastening assembly, the fastening assembly comprises a bolt, a nut, a spring and a round block, the bolt penetrates through a semi-ring and a support body, the nut is arranged at the top of the bolt, and the spring and the round block are installed at the bottom of the bolt. The nut is matched with the spring and the round block to conduct threaded fastening on the bolt. Through the arrangement of the fastening assembly and the semi-rings, when round bodies with different calibers are fixed, the clamping distance between the upper semi-ring and the lower semi-ring is adjusted by adjusting the threaded rotation of the nuts and the bolts, so that the round bodies are adapted to different round bodies, the bolts are respectively in threaded connection with the semi-rings and the frame body, and after threaded connection, the clamping distance between the upper semi-ring and the lower semi-ring is adjusted. The upper half ring and the lower half ring clamp the round body, the nut prevents the top of the bolt from loosening, and the spring provides tensile force between the upper surface of the round block and the lower surface of the frame body, so that the round block and the bolt are meshed tightly, a thread gap between the round block and the bolt is made up, and the bottom of the bolt is prevented from loosening.

The utility model belongs to the field of apron board assembly structures, and particularly relates to a stable assembly structure of an assembly type apron board, which comprises a first apron board and a second apron board, the first apron board is in contact with the second apron board, and a locking mechanism is arranged between the first apron board and the second apron board; the locking mechanism comprises a hollow ring, and the interiors of the left side and the right side of the hollow ring are connected with threaded rods through threads. The positioning grooves and the positioning blocks are arranged on the two sides of the water dispersing plates respectively, so that when the two water dispersing plates are assembled, quick positioning can be conducted, the edges are kept flat, in addition, a locking mechanism is jointly arranged between the two water dispersing plates, namely the first water dispersing plate and the second water dispersing plate, and a hollow ring is matched with threads between threaded rods at the two ends of the hollow ring in a matched mode. The two threaded rods can move oppositely, then the clamping blocks at the tail ends of the two threaded rods are buckled into the water dispersing plates to be locked, and then the installation stability between the first water dispersing plate and the second water dispersing plate is improved.