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32results about How to "Reduce local stress" patented technology

Detachable guitar

ActiveCN224177095UReduce local stressimprove integrityGuitarsNoiseMechanical engineering
The utility model discloses a detachable guitar, and relates to the technical field of guitar structures, and the detachable guitar comprises a guitar body and two handrails. The first ends of the two handrails are connected with the guitar body, and the second ends of the two handrails are directly connected to form a closed frame structure, so that on one hand, vibration can be more smoothly conducted to the guitar body through the continuous frame structure to improve the tone consistency, and on the other hand, resonance at a specific frequency can be inhibited, noise is reduced, the tone is purer, and the tone quality is improved. The closed frame structure can effectively disperse external force, reduce local stress of the guitar body and reduce the deformation risk, on the other hand, the second ends of the two handrails are connected to the lower end of the guitar body through the threaded connecting piece after being stacked, compared with the mode that the two handrails are independently connected to the guitar body, the stacking design can reduce the number of open holes, and the number of the open holes is reduced. The completeness of the guitar body is protected.
Owner:CHANGSHA GANYIN TECHNOLOGY CO LTD

An impact-resistant, damage-preventing ceramic liner configuration

The utility model relates to coking equipment technical field more specifically, relate to a kind of impact-resistant anti-damage ceramic lining plate configuration, comprising: lining plate body and the multiple tapered ceramic columns embedded in multiple positioning holes of lining plate body;Tapered ceramic column and positioning hole between filling have the adhesive curing fluid for forming sealing interface. In the utility model, multiple tapered ceramic columns are embedded in the positioning hole of lining plate body, when being impacted, tapered ceramic column can disperse impact force to the larger area of lining plate body, avoid impact force to concentrate in local area, to effectively reduce local stress, reduce the risk of damage due to stress concentration of lining plate;Tapered ceramic column and the adhesive fluid of aluminium dihydrogen phosphate filled between positioning hole, can form sealing interface, prevent material, dust and the like into the inside of positioning hole, avoid to cause damage to lining plate structure.
Owner:HEBEI LIBIN GENERAL EQUIP CO LTD

Automobile bumper with layered energy absorption structure

This utility model provides a car bumper with a layered energy-absorbing structure, relating to the field of automotive parts technology. Its features include a fixed bracket, a protective plate fixedly mounted on the front side of the fixed bracket, and connecting ear plates symmetrically arranged on both sides of the fixed bracket. The fixed bracket is a bent bracket, and a groove is provided between the upper part of the fixed bracket and the protective plate. The groove is filled with buffer rubber. A hydraulic damper is fixedly mounted between the connecting ear plates and the protective plate. A license plate frame is fixedly mounted at the middle of the front side of the protective plate. The end of the license plate frame is U-shaped, protruding to the front side of the protective plate, and the width of the front side of the license plate frame is greater than the width of the rear side. This utility model, through the bent structure of the fixed bracket, the buffer rubber in the groove, and the hydraulic damper, forms a multi-stage energy-absorbing system, effectively absorbing collision energy, improving safety, adapting to collision loads at different angles, and improving energy absorption efficiency.
Owner:CHANGZHOU HENGDA VEHICLE ACCESSORIES CO LTD

Translation type elevator for ceramic tile conveying

ActiveCN224226174UGuaranteed translationAchieve translational improvement
The utility model relates to the technical field of ceramic tile transmission, and discloses a translation type elevator for ceramic tile transmission, which comprises a rack, a guide plate, an annular transmission component and a plurality of moving components, an annular rail is arranged on the vertical face of the rack, and an annular conveying assembly is installed in the annular rail and used for driving the multiple moving assemblies to move circularly along the annular rail. The guide plate is mounted on the rack and is provided with a guide rail; the guide rail is positioned behind the annular rail; the moving assembly comprises a fixing frame, a bracket, a first supporting part and at least three second supporting parts. The problems that when a conventional lifting device which moves in a reciprocating mode is used, the reciprocating speed is increased to improve the conveying efficiency, meanwhile, shaking of the device is inevitably large, the ceramic tile quality is affected, and the conveying efficiency is limited by inertia force and is difficult to further improve are solved.
Owner:FOSHAN DONGPENG CERAMIC +3

Plastic pipe fitting with sealing accessory

The utility model relates to the technical field of plastic pipe fitting sealing, and provides a plastic pipe fitting with a sealing accessory, which comprises a sealing piece, a fixing groove is fixedly arranged in the sealing piece, an extension pipe is fixedly arranged on the inner wall of the fixing groove, and limiting lines are fixedly arranged in the extension pipe. The device ring is fixedly installed at the outer end of the sealing piece, adjusting grooves are fixedly formed in the two sides of the interior of the device ring, and the problems that when an original plastic pipe is installed, a sealing structure needs to be used for connecting two sections of plastic pipes, the interior of the plastic pipe is prevented from leaking, and the original plastic pipe is sealed through flange connection or adhesive tape winding; the technical problems that the plastic pipe sealing piece is aged after being used for a long time, the sealing piece is aged and falls off to cause leakage at the joint of the plastic pipe, and when the sealing piece is aged and falls off, the joint of the plastic pipe cannot be subjected to secondary sealing quickly, so that liquid in the plastic pipe leaks, and follow-up use is affected are solved.
Owner:HEBEI AIQING MINING MASCH EQUIP CO LTD

Optical fiber and method of making an optical fiber

ActiveCN118795593BUniform stressreduce local stress
The application provides an optical fiber and a preparation method thereof, and relates to the field of optical fibers.The optical fiber provided by the application comprises a fiber core, a cladding, a stress layer and a coating layer, the cladding is coated outside the fiber core, the stress layer is embedded in the cladding, the stress layer has two, the two stress layers are uniformly arranged around the periphery of the fiber core, and the coating layer is coated outside the cladding;the radius a of the fiber core is 2.75-3.25 mu m, the relative refractive index difference Delta n1 of the fiber core is 0.5-1%;the radius b of the cladding is 39-41 mu m, the cladding comprises a plurality of annular doped regions in a concentric circle structure in the radial direction of the cladding, the annular doped regions comprise a first annular region, the first annular region surrounds the fiber core outside, the relative refractive index difference Delta n2 of the first annular region is-0.1-0.3%, and the outer radius r2 of the first annular region and the outer diameter r1 of the inner circle of the first annular region satisfy the following relationship: (r2-r1) <= 3 mu m.The application provides an optical fiber and a preparation method thereof, and the coating layer of the optical fiber is not easy to fall off.
Owner:ZHONGTIAN TECH FIBER OPTICS +2

Wafer thinning methods

ActiveCN120480671Bstable supportreduce stress
This invention relates to the field of semiconductor manufacturing technology, and more particularly to a wafer thinning method. The wafer thinning method includes the following steps: S1: halving the front side of the wafer; S2: applying a protective film to the front side of the wafer, the thickness of which is greater than or equal to 215 μm; S3: loading the wafer onto the grinding station of a thinning machine, where the thinning machine grinds the back side of the wafer, and the spindle speed of the thinning machine is 3500 rpm to 4500 rpm. The DBG process is used to thin ultra-thin wafers. By applying a protective film with a thickness greater than or equal to 215 μm to the front side of the halved wafer, the support effect on the wafer is improved, reducing stress release and wafer warping during the thinning process. By increasing the spindle speed of the thinning machine, the grinding force during the thinning process is increased, improving grinding efficiency, further reducing local stress, avoiding defects such as wafer breakage and fragmentation, and improving the product yield of the wafer.
Owner:JIANGSU JCA ELECTRONICS TECH CO LTD

GH4169 alloy extra-large turbine disk skin structure and design method thereof

PendingCN122280659AEffectively disperse stress concentrationReduce fatigue damageFatigue damageStress concentration
This invention discloses a GH4169 alloy extra-large turbine disk skin structure and its design method, belonging to the field of metal material forming. The skin structure, with its forging surface radially along the center hole of the rough-machined turbine disk delivery part, includes a skin center section, a second transition section, and a first transition section connected sequentially from the inside to the outside. Both the first and second transition sections are conical surfaces, with rounded corners at their intersection. The angle between the generatrix of the first transition section and the vertical direction is θ1, and the angle between the generatrix of the second transition section and the vertical direction is θ2, where θ1 > θ2. The two-stage transition section design of the forging surface of the skin structure effectively disperses stress concentration in the central area of ​​the die during forging, significantly reducing local stress at the contact point between the die punch and the blank. The stress value can be controlled below 320 MPa, avoiding punch deformation or damage; reducing fatigue damage to the die under high stress, extending die service life, and reducing production costs.
Owner:CHINA NAT ERZHONG GRP DEYANG WANHANG DIE FORGING CO LTD

Cooking appliance

The utility model discloses a kind of cooking utensils, it includes pot body, lug, pot cover and push button, the lug is located at the outer periphery of the pot body, the lug is integrally formed with the pot body, the lug is equipped with sliding slot, the pot cover is equipped in the upper end of the pot body, the sliding slot is opened to the side of the pot cover and is arranged, the push button has elasticity to be installed in the sliding slot, the push button is movable relative to the lug along the direction towards the pot cover and away from the pot cover to have unlocking position and lock position, in the lock position, the push button is located on the top surface of the pot cover, in the unlocking position, the push button is away from the pot cover. The connecting structure of the pot body and the pot cover of the cooking utensil of the utility model embodiment is simple, and assembly efficiency is improved.
Owner:ZHEJIANG SUPOR ELECTRICAL APPLIANCES MFG CO LTD

A double-sided planing groove plate turnover device

The utility model provides a kind of double-sided planing groove board material turnover device, it is related to plate processing technical field, and it includes: hoisting mechanism, the traction end of hoisting mechanism connects clamping assembly;Clamping assembly includes U-shaped strip and the U-shaped outer groove of being set in the outside of U-shaped strip;The U-shaped opening direction of U-shaped strip and U-shaped outer groove is identical;U-shaped outer groove includes first outer side wall, second outer side wall and outer top wall;U-shaped strip includes the first inner side wall, second inner side wall and inner top wall for surrounding board piece clamping area, and the inner wall surface of second inner side wall and second outer side wall is fixedly connected;First outer side wall is provided with threaded hole along thickness direction, and threaded hole is towards first inner side wall;Adjusting bolt is threadedly connected with threaded hole, and the end of adjusting bolt is provided with pressing plate, and the axial displacement interval of adjusting bolt includes the locking position of making pressing plate and first inner side wall abutting tightly, reduce the damage degree when planing groove gypsum board turnover, provide support for planing groove processing, realize the quick low-damage overturning of planing groove gypsum board.
Owner:HUNAN MAIHAUS CONSTR TECH CO LTD

Wafer thinning ceramic-based diamond grinding wheel and preparation method and application thereof

The application discloses a ceramic-based diamond grinding wheel for wafer thinning and a preparation method and application thereof, and comprises ceramic grinding blocks arranged on an aluminum alloy base; the ceramic grinding blocks comprise 20-40% of ceramic binder, 20-40% of diamond micro powder and 30-50% of pore-forming agents in percentage by mass; the ceramic binder comprises 25-50% of silicon oxide, 20-40% of boron oxide, 6-15% of sodium oxide, 6-10% of aluminum oxide, 5-7% of zinc oxide, 4-6% of zirconium oxide, 3-5% of calcium oxide, 1-3% of magnesium oxide, 1-3% of potassium oxide and 0.5-4% of lithium oxide in percentage by mass. The application introduces lithium oxide and zirconium oxide, reduces the local stress of the ceramic binder and diamond compound, and improves the binding force; sodium oxide and potassium oxide are used in cooperation to reduce the ceramic sintering temperature, and the application effectively improves the service performance of the grinding wheel and the production yield.
Owner:SHAANXI COAL & CHEM TECH INST

Tire pattern structure for resisting puncture and actively discharging stones

ActiveCN121777602BExpand bite gapAvoid the problem of fast agingTyre tread bands/patternsStructural engineeringRoad surface
The application discloses a tire pattern structure with anti-puncture and active stone discharge for gravel pavement, and relates to the technical field of tires.The technical scheme is as follows: a pattern block is arranged on a tread, pattern grooves are arranged between the pattern blocks, the groove bottoms of the pattern grooves are provided with elastic protection teeth in a zip fastener shape and engaged with each other in the circumferential direction of the tire, the elastic protection teeth are provided with an engagement gap therebetween for discharging stones, and the groove bottoms of the pattern grooves are provided with a gradient hardness buffer layer below the elastic protection teeth, wherein the Shore hardness of the gradient hardness buffer layer gradually changes from 75HA to 65HA from a surface layer in contact with the elastic protection teeth to an inner layer away from the elastic protection teeth.The application realizes the organic combination of stone discharge and anti-puncture through the synergistic effect of multiple structures, greatly reduces the early damage probability of the tire when driving on the gravel pavement, effectively prolongs the actual service life of the tire, improves the safety of the tire when driving on the gravel pavement, and has significant technical advantages and practical value compared with the prior art.
Owner:SHANDONG XINGDA TYRE CO LTD +2

Low-noise motorcycle engine cylinder head

ActiveCN224396590UReduce leakage noiseAddressing the Deficiency of Insufficient InhibitionCylinder headsCylindersLow noiseCylinder head
The utility model discloses a low -noise motorcycle engine cylinder cover belongs to cylinder cover technical field, it includes cylinder cover body, the inside wall of cylinder cover body is equipped with the noise reduction structure, the inside wall center place of cylinder cover body is equipped with cooling structure, the inside center upper place of cylinder cover body is equipped with support structure, the cooling structure includes cavity, the inside wall center place of cylinder cover body is equipped with the cavity, the inside center upper place of cavity is equipped with cooling pipe, in addition, the utility model discloses, can be targeted to attenuate valve knock, gas turbulence etc. high frequency noise, and the noise reduction amount reaches 10 15dB, solve the problem that high frequency noise penetrability is strong, simultaneously, absorb the vibration energy that cylinder body resonance and component low frequency impact produced, and the barrier efficiency improves 20 30%, solved the defect that low frequency noise suppression is insufficient, and, reduce gas leakage noise 8 12dB, also through the rigid vibration transmission of elastic contact reduction cylinder cover and cylinder, avoid resonance and produce additional noise.
Owner:GUANGDONG RUIZHEN TECH CO LTD

Temporary support device for stress conversion of existing structure

The utility model relates to the field of building improvement, and aims to provide a temporary support device for stress conversion of an existing structure, which comprises an existing bottom plate, an existing underpinning part positioned above the existing bottom plate and a temporary support for bearing the load of the existing underpinning part, a plurality of steel cushion blocks are arranged on the steel cushion plate at intervals in the left-right direction, and the temporary support is erected on the top sides of the steel cushion blocks; the steel base plate is further provided with a plurality of hydraulic synchronous jacks used for synchronously jacking the temporary support. The device is wide in application range, high in integrity and stability, high in safety and reliability and capable of being widely applied to projects such as existing building maintenance, transformation and construction.
Owner:ARCHITECTURAL DESIGN INST FUKIEN PROV +1

Bagging device for sludge filling

ActiveCN224090561UReduce direct forceavoid tearingSolid materialSludgeStructural engineering
The utility model relates to the technical field of sludge treatment, in particular to a bagging device for filling sludge, which comprises a platform and a collecting bag, a bagging mechanism is arranged on the platform and is used for filling the collecting bag with sludge, the bagging mechanism comprises a main body component, a bag opening component and a bag opening component, the main body component comprises a bracket fixed at the top of the platform, and an adjusting frame is arranged below the bracket; first air cylinders are installed at the four corners of the top of the bracket correspondingly, the output ends of the first air cylinders are fixed to the top of an adjusting frame, and extending frames are fixed to the four corners of the adjusting frame correspondingly. The feeding assembly is arranged above the bracket and is used for feeding sludge; the bag hanging assembly comprises a mounting frame mounted on the extension frame, a supporting arm is pivoted to the lower end in the mounting frame, and a hook is fixed to the lower end of the supporting arm; the weight of a bag opening is partially transferred to a bag hanging structure through the bag hanging assembly, direct stress of the bag opening is reduced, and tearing is prevented; in addition, it is guaranteed that the hanging rope cannot loosen in the filling process, and stability is improved.
Owner:SHAANXI NEW WORLD SOLID WASTE COMPREHENSIVE DISPOSAL

Novel stopwatch seat

The utility model relates to a novel stopwatch seat, and belongs to the technical field of carbon fiber bicycle accessories. The stopwatch seat main body comprises a connecting plate and an annular seat, the connecting plate comprises an upper plane part and a lower supporting part, the supporting part is arched, and the plane part and the supporting part are of hollow structures. According to the stopwatch base arch bridge structure, vertical loads are converted into pressure stress dispersed along the arch through the arc, and local stress is reduced. The overall rigidity is kept while the weight is reduced. The geometric shape of the arch bridge resists external force deformation, the arch base or the clamping structure of the stopwatch seat can reduce displacement caused by riding bumping, and the stopwatch is ensured to be stable. The design of the arch bridge streamline stopwatch seat adopted by the utility model accords with the fluid mechanics design principle, and the riding wind resistance can be effectively reduced.
Owner:SHANDONG TAISHAN RUIBAO COMPOSITE MATERIAL CO LTD

A protective film assembly structure with a buffer reinforcing layer

The utility model relates to the technical field of protection film, disclose a kind of protection film combination structure with buffer reinforcing layer, including protection film body, four positioning rings and release film, two two of four positioning rings are diagonally opposite and are fixedly provided with positioning angle on one side, four positioning angle lower end and four positioning ring are fixedly provided with removable glue on the side of positioning angle upper side, the middle part of both sides of the release film is fixedly provided with release ear, the protection film body includes surface layer, the surface layer lower end is fixedly provided with decorative layer, the decorative layer lower end is fixedly provided with buffer layer, the buffer layer upper side is provided with multiple annular grooves of different sizes, multiple annular grooves are fixedly provided with reinforcing ring inside, the buffer layer lower end is fixedly provided with base layer, and the base layer lower end is fixedly provided with laminating layer. In the utility model, the accuracy and efficiency when laminating of protection film body are improved, and the use effect of protection film body is improved.
Owner:YANTAI JIANXIN ELECTRONICS CO LTD

A temperature cycle resistant silicon carbide power chip and assembly of a double layer dielectric

ActiveCN224722297UImproved temperature cycle reliabilityreduce local stress
The utility model provides a kind of temperature cycle resistant double-layer medium silicon carbide power chip and assembly, it is related to silicon carbide chip technical field.The chip includes from bottom to top sequentially includes: silicon carbide substrate layer, silicon carbide epitaxial layer and metal electrode layer;Metal electrode layer includes multiple mutually isolated metal electrodes;Each metal electrode is filled with first dielectric layer;The thickness of first dielectric layer is same with the thickness of metal electrode;Metal electrode and first dielectric layer are covered with second dielectric layer above;Polyimide film layer is covered with second dielectric layer above.The utility model can effectively block water vapor intrusion, finally improve chip temperature cycle resistant reliability.
Owner:北京国联万众半导体科技有限公司

Automatic rotary polishing equipment for high-precision stainless steel pipe surface treatment

The application relates to the technical field of steel pipe grinding, and discloses automatic rotary polishing equipment for high-precision stainless steel pipe surface treatment, which comprises a polisher main body and a clamping mechanism arranged on the top of the polisher main body. The clamping mechanism comprises a supporting plate arranged on the top of the polisher main body, a circular groove arranged on the top of the supporting plate, a rotating drum arranged on one side of the supporting plate close to the circular groove, one side of the rotating drum close to the supporting plate being rotationally connected with the circular groove, an annular groove arranged on one side of the rotating drum close to the circular groove, a driving ring arranged in the annular groove, a worm arranged on the rotating drum close to the driving ring, three annular arrayed special-shaped holes arranged on one side of the rotating drum away from the circular groove, a sleeve arranged on the inner wall of one side of the special-shaped hole away from the circular groove, and a driving groove arranged on the inner wall of the sleeve. The clamping mechanism can meet the clamping requirements of the inner wall and the outer wall of the stainless steel pipe, and the contact points between the clamping mechanism and the stainless steel pipe are increased to enhance the clamping stability.
Owner:GANYEAH HLDG GRP CO LTD

Battery cell, battery, and electric device

ActiveCN224417986Uhigh strengthreduce weight
The application provides a battery monomer, a battery and a power utilization device. The battery monomer comprises: a shell (10) comprising a first wall; an electrode assembly (4) arranged in the shell (10), the electrode assembly (4) comprising an electrode main body (41) and a tab, and the tab being led out from the electrode main body (41); and a terminal assembly (3) comprising a connecting piece (31) and at least two terminals (30), the at least two terminals (30) are arranged on the first wall, the connecting piece (31) is arranged at least partially around the at least two terminals (30), the terminal (30) is arranged at least partially between the connecting piece (31) and the first wall along the thickness direction of the first wall, the connecting piece (31) is connected with the first wall, and the terminal (30) is electrically connected with the corresponding tab.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD

A close-packed control device

ActiveCN224741843Ureduce local stressavoid damage
The utility model discloses a closely joint control device, including T type pull rod and two superimposed board, the T type pull rod on slidingly covers and sets up back lath, back lath is fixedly connected with the support frame on, support frame is fixedly connected with the connecting column on, be provided with the clamping assembly on the connecting column, still be provided with locking assembly on the T type pull rod. Through setting up locking assembly drive back lath to move locking, simultaneously link clamping assembly and the ratchet structure automatic clamping on the T type pull rod, form double locking mechanism, when the pouring concrete produces huge thrust to back lath, the thrust is passed to clamping assembly through support frame and connecting column, and is effectively decomposed and bears by the bite effect of ratchet block and ratchet tooth, the local stress that greatly alleviated the locking assembly bears, the device not only effectively prevented the damage of thread because of overload, significantly improved the reliability and durability of the tensioning effect, promoted construction quality and security.
Owner:安徽金鹏建设集团股份有限公司

Prestressed tensioning system and construction method thereof

ActiveCN121535843BIncrease the force areareduce local stressAuxillary shaping apparatusPre stressArchitectural engineering
The application relates to a prestress tension system and a construction method thereof, and relates to the technical field of a prefabricated beam tension pedestal. The system comprises a base and end crossbeams. Two end crossbeams are symmetrically and fixedly installed on the base. A plurality of steel strands are arranged. The two ends of the steel strands are respectively arranged on the two end crossbeams. A plurality of groups of embedded parts are symmetrically embedded on the two end crossbeams. The steel strands are arranged in the embedded parts. A stress diffusion part comprises a stress plate. A plurality of stress holes are arranged on the stress plate. The steel strands are correspondingly arranged in the stress holes. A plurality of reinforcing plates are arranged. The reinforcing plates are fixedly installed on the stress plate. The reinforcing plates are connected with the embedded parts. A bottom plate is fixedly installed at the bottom of the stress plate. The bottom plate is fixedly connected with the reinforcing plates. The prestress steel strands can reduce the local stress generated on the end crossbeams, and the prestress steel strands can avoid damaging the end crossbeams.
Owner:SHANXI ERJIAN GRP CO LTD

Antibody detection kit with automatic covering mechanism

The utility model relates to the technical field of detection kits, in particular to an antibody detection kit with an automatic covering mechanism, which comprises a bottom plate, a cover plate, a pressing block, a power component and an overturning component, the power component is arranged below the bottom plate and is used for reversing and transmitting pressure applied to the pressing block by a user, and the overturning component is used for overturning the pressing block. The power assembly is arranged below the bottom plate and used for transmitting force applied by a user to the turnover assembly, and the turnover assembly is arranged below the bottom plate and used for bearing kinetic energy generated by the power assembly and acting the kinetic energy on the cover plate to cover and open the cover plate. Compared with the prior art, the problem that an existing antibody detection kit is poor in operation convenience is solved.
Owner:JIANGSU BIO-HYKON BIOLOGICAL TECH CO LTD

A material collecting mechanism for a dye grinding apparatus

ActiveCN224542594UContinuous and efficient cleaningSolve concentrated stressSlurryPhysics
The utility model provides a kind of material collecting mechanism for dye grinding equipment, including collecting barrel, first cleaning mechanism, second cleaning mechanism, annular support, driving mechanism, positioning assembly, transmission mechanism, fixed support and rotating structure;Collecting barrel is located in the barrel body inside of grinding equipment;First cleaning mechanism, second cleaning mechanism, annular support are all with the inside of collecting barrel, and the upper end surface of annular support is fixedly connected with the bottom of first cleaning mechanism.The material collecting mechanism for dye grinding equipment of the utility model solves the problem that the collection container in the related art lacks an anti-adhesion structure, resulting in continuous deposition of high-viscosity dye slurry on the inner wall of the container.
Owner:TIANJIN HONGHUA DIGITAL NEW MATERIALS CO LTD +1

Cantilever beam connection reinforcing device based on flange structure optimization

ActiveCN224214504UReduce local stressgood synergyPinsNutsCantilevered beamScrew thread
The utility model discloses a cantilever beam connecting and reinforcing device based on flange structure optimization, which relates to the technical field of flange structure optimization and comprises a cantilever beam pipe and limiting discs fixedly connected to two ends of the cantilever beam pipe, two flanges are welded on the outer wall of the cantilever beam pipe, and a plurality of first threaded holes are formed in the flanges at equal intervals. Five rib plates are welded to the side walls of the outer rings of the two flanges at equal intervals, and second threaded holes are formed in the rib plates. By means of the arrangement of the rib plates, loads can be effectively dispersed, and local stress of the flanges is reduced; through the arrangement of the bolt protection sleeve, the bolt can be effectively isolated from the external environment, and performance reduction caused by corrosion and abrasion of the bolt is reduced; through the arrangement of the anti-skid teeth, the anti-loosening performance of the nut can be remarkably improved, the fastening performance of bolt connection is ensured, the stability of the connection part can be kept even under the action of a severe environment and a complex load, and the problems that a traditional nut is poor in anti-skid effect and prone to loosening in a vibration environment, and consequently connection of a cantilever beam fails are solved.
Owner:SDIC ZHONGMEI TONGMEI JINGTANG PORT CO LTD

Spray painting fixtures and spray painting systems

This application relates to a painting fixture and painting system, belonging to the field of painting technology. The painting fixture includes a positioning component and a support component. The positioning component extends along a first direction, and the support component is disposed on one side of the positioning component and connected to it. The support component extends along a second direction. The positioning component and the support component are used to cooperate in supporting the plastic tailgate during the painting process; wherein, the first direction and the second direction intersect. The positioning component of this application is used to position the plastic tailgate, and the support component is used to support the plastic tailgate. By setting the positioning component and the support component to intersect, it is possible to achieve both large-scale positioning of the plastic tailgate along the first direction and large-scale support along the second direction, thereby achieving multi-point support for the plastic tailgate, reducing local stress, and thus effectively reducing the possibility of deformation of the plastic tailgate in high-temperature environments, improving the yield rate of the plastic tailgate.
Owner:ZHEJIANG LEAPMOTOR TECH CO LTD

A valve cover blank casting

The utility model relates to rough casting technical field discloses a valve cover rough casting, including base, the inside of base is provided with first reserved hole, the material of base is cast iron, the top of first reserved hole is fixedly connected with arc shell, the top of arc shell is fixedly connected with intercommunication shell, the utility model discloses a first reserved hole and second reserved hole processing thread line on base and connecting plate, and utilize first reserved hole to carry out device fixed, second reserved hole carries out the structure operation of whole and other components connection, drives the stable installation of whole device and the effective connection with other components, simultaneously, the intercommunication between arc shell, intercommunication shell and transmission channel can make the better flowability of substance in the inside, thereby realized the stability of device installation and the reliability of other components connection, ensure that whole device does not appear loose, leakage etc. problem because of unstable connection in the working process, guarantees the leakproofness.
Owner:BINHAI XINXIN CASTING CO LTD

A connecting structure of prefabricated shield segment

This invention relates to the field of precast tunnel segment technology, and provides a connection structure for precast tunnel segments, including a segment body with connection mechanisms fixed on both sides. The invention utilizes these connection mechanisms, where a tenon moves a waterstop strip into a groove, achieving rapid alignment and preventing misalignment during assembly. The engagement of the tenon and groove transmits shear force at the joint, reducing the shear burden on the segment bolts and improving overall rigidity. Under the action of the segment bolts and nuts, two sets of segment bodies are connected and fixed together. The flat washer ensures a more durable and stable connection. The sealing gasket forms the first waterproof barrier, preventing groundwater infiltration. The waterstop strip expands upon contact with water, further filling the joint gaps as a second waterproof line, improving waterproof reliability. The sealing gasket and waterstop strip also buffer vibrations and reduce joint loosening, indirectly improving long-term connection stability.
Owner:CCCC FIRST HIGHWAY ENG BUREAU GANGFA (JIANGSU) CONSTR TECH CO LTD

A reaction kettle for resin production

ActiveCN224271209Uwell mixedreduce adhesion
This utility model relates to a reaction device, a reaction vessel for resin production, including a stirring shaft and a vessel body. The lower end of the stirring shaft extends into the vessel body along the upper end and is connected to stirring blades and a trigger rod. The upper end of the stirring shaft is connected to a drive motor. The trigger rod includes a rod body perpendicular to the stirring shaft. A groove is formed along the axial direction of the end of the rod body away from the stirring shaft. Limiting grooves are formed on opposite sides of the inner wall of the groove, consistent with the direction of the groove. An alloy contact is provided in the groove. With the cooperation of a spring and a guide block, the alloy contact of this utility model can stably contact the spherical protrusion during stirring, generating regular vibration. This vibration can effectively drive the flow of reactants near the side wall in the vessel body, making the reactants more thoroughly mixed. At the same time, the vibration can reduce the adhesion of reactants to the side wall of the vessel body, significantly improving reaction efficiency, reducing material waste and equipment cleaning difficulty.
Owner:宝鸡鑫源科达现代精细化工有限公司