164 results about "Solid structure" patented technology

A user support includes a hood structure that is supported by a back frame structure of the user support. The hood structure may comprise a one-piece homogeneous polymer structure that is formed by an additive process. The hood structure may include solid structures and at least one porous lattice matrix that is integrally formed with the solid structures.

The utility model relates to a fermentation box based on food baking, which comprises a double-door box body, the middle part in the box body is equally divided into two separation cavities by a separation plate matched with the middle part, two groups of clamping strip plates are horizontally and symmetrically arranged in the separation cavities up and down respectively, and tray racks are clamped in the two separation cavities along the clamping strip plates; the tray rack is formed by butting two single racks at intervals; each single frame comprises a main frame of a rectangular three-dimensional structure, and a plurality of layered frames of a structure shaped like a Chinese character'mu 'are horizontally and fixedly connected into the main frame at equal intervals in the long edge direction of the main frame. The main frames of the two single body frames are fixedly connected through an upper fixing plate and a lower fixing plate which are located on the same side face, and an empty groove which can be matched with the partition plate in a clamped mode is formed between the two main frames. According to the tray rack in the fermentation box, an operator can take out or put the whole tray rack from or into the box body at a time, so that the operation process is greatly simplified, and the working efficiency is improved.

The utility model discloses a kind of stainless steel bar for facilitating stable transmission, including stainless steel rod body structure, stainless steel rod body structure is set in through crossbar and side rod combination, crossbar, side rod integrated molding, crossbar is cylindrical solid structure, side rod is hollow pipe body structure;Guide structure is used for the transmission guide of stainless steel rod body structure, and the first groove seat, second groove seat in guide structure are adaptively set with side rod, the guide structure includes limit block, support roller and mounting plate block, limit block is fixedly connected on mounting plate block, support roller is positioned on limit block, the side end of mounting plate block is fixedly connected with first groove seat and second groove seat, first groove seat, second groove seat are fixedly connected.The utility model is a kind of stainless steel bar for facilitating stable transmission, by the setting of structure, the purpose of stable transmission is realized.

The utility model discloses a negative pressure dedusting roller screen which comprises a feeding cyclone, a dedusting roller screen and a main auger, one side, close to the feeding cyclone, of the main auger is of a solid structure, and the other part of the main auger is of a hollow structure. The centrifugal fan is connected with the dust receiving lower plate, the auxiliary packing auger is rotatably installed in the dust receiving lower plate, and the dust removal roller screen and the main packing auger are opposite in rotation direction. The dust removal device relates to the technical field of roller screens, negative pressure is formed on the surface of the dust removal roller screen through the centrifugal fan, dust can be rapidly sucked away, the dust removal efficiency is greatly improved, and the dust removal efficiency is improved. The soil content in the straw is effectively reduced, the requirement of forage grass production on the straw quality is met, and the health of livestock is guaranteed; the rotating direction of the dust removal roller screen is opposite to that of the main auger, the problem that screen meshes are blocked by straw is avoided, meanwhile, the area of the straw passing through the roller screen is increased, the defects caused by size limitation of the roller screen are overcome, and the working efficiency of equipment is improved.

The application provides a new type of pin shaft, which comprises a hollow shaft and a core shaft embedded in the hollow shaft. The application is obtained by analyzing the working condition of the pin shaft, comprehensively considering the material selection, structure design, heat treatment process and machining process, and selecting 30CrMnSiA high-strength alloy structural steel to redesign the structure. The original Φ380 integral solid structure is optimized into a combined structure, the hollow shaft is installed with the core shaft, the structure of the core shaft is optimized and the machining process is optimized, different heat treatment processes are adopted for the hollow shaft and the core shaft, the two are cold assembled after machining, the interference fit is realized at room temperature, the mechanical properties of the assembled pin shaft are ensured, the problem that the mechanical properties of the material core cannot be reached is effectively avoided, the overall mechanical properties of the combined pin shaft are greatly improved, the strength and toughness of the material are combined, and the fracture toughness and fatigue strength are obviously improved.

The utility model provides a fork arm device for fixing an antenna forecabin, which comprises two sets of clamping and supporting mechanisms, each set of clamping and supporting mechanism comprises a rotary table connecting plate for supporting a rotary table and a supporting claw fixed with the rotary table connecting plate, and the supporting claw comprises an upper clamping arm and a lower clamping arm which are arranged up and down and are respectively used for fixing the top and the bottom of the antenna forecabin. And the antenna front cabin is clamped between the upper clamping arm and the lower clamping arm. Due to the structural design of the supporting claws, the bending resistance of the whole clamping and supporting mechanism is improved, a key stress area is of a solid structure, a non-stress key area is of a hollowed-out design, the structural reliability of the clamping and supporting mechanism in long-term use is guaranteed, and the design requirement for light weight is met. The clamping table and the clamping groove are matched and positioned, so that the connection stability of the antenna front cabin and the rotary table is ensured, the vibration displacement in a working state is effectively inhibited, and the antenna pointing precision is improved.

The application provides a hollow front axle of a micro-light truck with a shock absorber hole and a manufacturing method thereof, and belongs to the technical field of automobile parts, comprising a hollow axle body, a shock absorber ring, a steering limiting block and a fist end plugging. The hollow axle body comprises a middle beam, a bent neck and a fist. The two ends of the middle beam are provided with the bent necks, the end of the bent neck is provided with the fist, the inside of the fist is provided with a rectangular hole, the rectangular hole is welded solid through the fist end plugging, the fist is provided with a king pin hole for installing a king pin, the king pin hole is provided with a lock pin hole along the axial direction, the rear side of the fist is provided with a limiting block groove, and the limiting block groove is embedded and welded with the steering limiting block. The end of the bent neck is provided with the shock absorber hole, the front and rear sides of the end of the bent neck are provided with blind holes, and the front and rear sides of the blind holes are welded with the shock absorber ring. The shock absorber hole is processed on the solid structure, the strength requirement of installing the shock absorber pin shaft is met, and the inner cavity of the hollow front axle is prevented from being filled with water when the shock absorber pin shaft is assembled, so that the service life is reduced.

This application relates to a method for forming hollow carbon electrodes, a forming module, and a special mandrel for forming. The special mandrel has a solid structure, with a locking groove in the lifting section. The lifting mechanism can cooperate with the locking groove for lifting. The demolding section has a first slope, and the installation positioning section is shaped like a frustum of a cone with a second slope, which is greater than the first slope. The installation positioning section can be inserted and positioned with the installation positioning hole. The special mandrel is made of 40Cr or stainless steel. The special mandrel has a solid structure, high overall bending strength, and is not easily deformed. The 40Cr or stainless steel special mandrel is not easy to rust. The demolding section has a demolding slope for easy demolding. Using the special mandrel as a hole-forming mold for the pre-formed center hole of the hollow carbon electrode makes demolding easy and prevents the hollow carbon electrode from being damaged, avoiding product scrap. Furthermore, the male end of the hollow carbon electrode has high strength, preventing the male end from easily breaking during use and avoiding serious economic losses.

The utility model discloses a kind of corrosion-resistant vacuum pump covers of solid structure, belong to vacuum equipment field technical field, solve the technical problem of complex preparation process of anticorrosion water ring vacuum pump in prior art, and high cost.It includes pump cover main body, including the circular planar plate and circular ring side wall connected with each other, the circular planar plate center of barrel type end cover is equipped with the shaft hole of installation rotating shaft;Multiple chambers are formed by partition in the pump cover main body of open end;It is equipped with intermediate annular partition and is inwardly extended around shaft hole, upper portion between the outer side wall of intermediate annular partition outer side wall and the outer side wall of pump cover main body is equipped with upper portion vertical partition, lower portion between the outer side wall bottom of intermediate annular partition outer side wall and the outer side wall of pump cover main body is equipped with lower portion vertical partition;Lower portion vertical partition is first double-layer partition with gap in middle, second horizontal partition, first double-layer partition, intermediate annular partition, upper portion vertical partition and circular ring side wall are enclosed left and right two air chambers.

The utility model relates to the technical field of sole pressing machines, and discloses a flowing type self-balancing floating bottom cylinder which comprises an oil cylinder body of a cuboid structure, a plurality of independent oil cavities are formed in the oil cylinder body side by side in the length direction, oil cylinder openings are formed in the tops of the oil cavities, and the bottoms of adjacent oil cylinders are communicated through one or more oil guide channels. The side walls of the foremost oil cavity and the last oil cavity are each provided with an oil injection opening. A piston guide piece is installed on an oil cylinder opening, a piston rod penetrates upwards from the bottom of the piston guide piece, a fixing plate is arranged at the top end of the piston rod, the oil cylinder body is arranged to be of solid structures on the two sides of parallel oil cavities, guide rods are fixed to the bottoms of the two ends of the fixing plate respectively, the guide rods are movably inserted into guide holes formed in the solid structures, and reset springs are arranged on the guide rods in a sleeved mode. An accessory hydraulic control system and an external auxiliary software and hardware system in a traditional scheme are omitted, energy consumption and manufacturing cost are greatly reduced, the size is reduced, installation space is saved, and installation is more convenient.

The invention provides a solid fracture calculation method and device based on smoothed particle dynamics. The method comprises the following steps: establishing a smoothed particle dynamics calculation model, setting conditions, and obtaining a stress state between particles; and when the stress state between any particle pair meets the judgment basis, judging that the particle pair is broken and breaking the link bond. And calculating the midpoint position of the fracture particle pair and setting the midpoint position as a base point, and establishing a failure surface by taking the connecting line direction of the two fracture particles as a normal direction. And on the basis of a preset smooth kernel function, in the fracture particle influence domain, according to the position relationship between the particles and the fracture surfaces, dividing the particles in the domain into a fracture surface same-side set and a fracture surface different-side set, keeping same-side links, and disconnecting different-side links. And repeating the steps until the calculation of the fracture process of the solid structure is completed. According to the method, stable construction of the failure surface is realized, the influence of real-time position disturbance is avoided, and the simulation precision and the applicability of the algorithm are improved by controlling the link keys in the complete influence domain in a regional manner.

The invention discloses a FLUENT-based temperature field simulation method for a jet quenching process, belongs to the technical field of heat treatment numerical simulation, and aims to solve the technical problems that the temperature measurement difficulty of an anti-heat transfer method is high and the heat exchange coefficient at an interface is difficult to accurately and reversely deduce in the temperature field research of the quenching process of an existing large-scale variable-cross-section steel pipe. The temperature field simulation method comprises the following steps: S1, establishing a solid structure and an internal fluid geometric model; s2, constructing a solid structure and an internal fluid grid model; s3, setting a solving method; s4, setting calculation boundary conditions; s5, finite element simulation analysis is conducted on the quenching cooling process of the large-scale variable-cross-section steel pipe through Fluent software, and a simulation result is obtained; s6, analyzing a simulation result to obtain a temperature change curve and a temperature distribution cloud chart of the large-scale variable-cross-section steel pipe at different moments; and S7, determining quenching process parameters according to a simulation result. According to the method, more accurate and reliable temperature field data of the large variable-cross-section steel pipe in the inner-spraying and outer-spraying quenching process can be obtained.

This invention provides a method, apparatus, and electronic device for strength verification of hexahedral 3D printed lattice structures, relating to the technical field of 3D printed lattice structure verification. The method includes: acquiring the lattice structure corresponding to the target object and determining hexahedral lattice elements from the three-dimensional model of the lattice structure; determining the homogenized solid structure corresponding to the hexahedral lattice elements based on periodic boundary conditions and equivalent material parameters of the hexahedral lattice elements; and performing strength verification of the lattice structure of the target object based on macroscopic and mesoscopic finite element strength analysis of the homogenized solid structure. This alleviates the technical problem that existing technologies cannot quickly and accurately perform strength verification and lattice parameter optimization of the designed 3D printed lattice product structure.

This invention discloses a rapid interactive and verification method for mold structures based on wireframe preview, applied to a computer-aided design system. The method includes: receiving and loading a parametric 3D structural model of the target mold; parsing the 3D structural model, extracting and registering the driving design parameters, and generating a parameter registry; constructing and displaying a lightweight wireframe preview model representing the structural outline based on the parameter values ​​in the parameter registry; adjusting the design parameters, updating the parameter values ​​in the parameter registry in real time, and driving the wireframe preview model to update synchronously; after confirming that the updated wireframe preview model meets the design intent, driving the computer-aided design system to generate the final 3D solid structure based on the final parameter registry. This invention significantly improves the efficiency of mold structure design by providing real-time preview and rapid adjustment interaction during the design process.

According to the capacitor, a plurality of capacitor cores are welded and fixed together through a strip-shaped supporting busbar, the supporting busbar is provided with a specific electrode terminal structure, that is, a bent strip-shaped solid structure is adopted, welding points are all located on the structure, and the welding points wrap and cover the tail end of a strip-shaped solid. The electrode terminal structure has a considerable degree of elastic deformation and plastic deformation, and the stress of a welding point can be released through deformation; each electrode terminal is provided with at least two spaced strip-shaped entities, so that even if one strip-shaped entity is damaged under the condition of extreme stress, the other strip-shaped entity can ensure the basic function of the capacitor; furthermore, the strip-shaped supporting busbar has certain deformability, and the electrode terminal structure is combined, so that the capacitor can absorb stress and automatically release the stress through the elastic deformation of the supporting busbar, welding points are prevented from cracking, and the anti-fatigue performance is improved.

The utility model discloses a kind of continuous stamping die of fan blade support, comprising: upper die and lower die, the upper die includes upper die holder, upper die plate and pressing plate, the lower die includes lower die holder, lower die plate and feed inlet, the feed inlet is installed in the feed end of the lower die holder, multiple groups of buoyancy guide pins are symmetrically laid on the both sides of the lower die plate;Punch group, plane forming punch, solid forming punch and slitting cutter head are sequentially arranged from front to back on the upper die plate, corresponding punch forming position, plane structure forming position, solid structure forming position and blanking position are one by one arranged on the surface of the lower die plate, cavity is equipped below the lower solid stamping forming position and blanking position, the material ejecting mechanism that can simultaneously eject workpiece on solid stamping forming position and blanking position is installed in the cavity, high-pressure air head is also installed on the blanking position. By the above-mentioned mode, the utility model can integrate multiple stamping dies, improve workpiece production efficiency, and significantly reduce the equipment cost of production line.

The utility model discloses an energy-saving and environment-friendly waste gas purification treatment device, which relates to the field of filler replacement of spray towers, and comprises a spray tower with a square cross section, the input end of the spray tower is provided with a gas inlet pipe, the output end of the spray tower is connected with an exhaust pipe, the inner wall of the spray tower is fixedly provided with two support plates, and the support plates are fixedly connected with the spray tower. Two groups of rotating door structures are rotatably mounted on the outer wall of the spray tower, the bottom ends of the rotating door structures are flush with the top end of the supporting plate, each rotating door structure comprises two rotating doors which are symmetrically opened or closed, the front section part of the supporting plate is of a solid structure, the rear part of the front section part of the supporting plate is of a porous structure, and the supporting plate is of a hollow structure. And a synchronizing mechanism is mounted on the front-section solid structure part of the supporting plate. According to the utility model, the power mechanism, the synchronizing mechanism and the packing layer which is integrally and slidably mounted are arranged, so that the replacement efficiency of the packing can be effectively improved.

1. Name of the design product: hexagonal socket screw. 2. Use of the design product: the design product is used for fastening connection between solid structures. 3. Design points of the design product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The invention discloses a forming method for integrally weaving a flat cone antenna housing, and belongs to the field of fiber preform forming. The method comprises the steps of basic weaving parameter determination, end forming, barrel body forming and tail weaving and demolding. According to the invention, the flat cone antenna housing is disassembled into the end head and the cylinder body, the end head is further decomposed into the solid cylinder and the flat cone profile, and the complex geometry and material distribution problem can be decomposed into controllable process units through numerical weaving analysis of the end head; accurate and compact weaving of a variable-thickness solid structure on any complex curved surface is achieved, meanwhile, yarn connection from the special-shaped solid end to the multi-gradient cylinder body is not interrupted, a whole is formed, the ablation resistance, the impact resistance and the pressure bearing capacity of the multi-gradient cylinder body are greatly improved under the extreme working condition, and the service life of the multi-gradient cylinder body is prolonged. And the risk of damage to the whole structure caused by interface failure is avoided.

The utility model belongs to the technical field of machining cutters, and particularly relates to a cutting and polishing milling cutter which comprises an n-shaped mounting frame, a milling cutter head and a solid grinding head, and further comprises a mounting seat, a milling cutter head and a solid grinding head, the mounting seat is rotatably arranged on the inner side of the n-shaped mounting frame, and the milling cutter head and the solid grinding head are detachably mounted at the two opposite ends of the mounting seat respectively; a plurality of grooves which are distributed at equal intervals in the circumferential direction are machined in the outer wall of the mounting base, the first locking bolts are mounted on the n-shaped mounting frame in a threaded screwing mode, and one ends of the first locking bolts are embedded into the grooves; according to the utility model, the milling cutter head and the solid grinding head are mounted through the mounting seat, the mounting seat is rotationally mounted and is locked by using the first locking bolt, so that the milling cutter head and the solid grinding head can be conveniently switched according to actual machining requirements, machining interference is not generated between the milling cutter head and the solid grinding head, the safety is high, and the solid grinding head is of a solid structure, so that the milling cutter head and the solid grinding head are convenient to use. And the structural strength is high.

The utility model discloses high -voltage area tower crown structure of high -rise building, including top floor, the outer surface fixed connection of top floor has tower crown base, the outer surface of tower crown base is equipped with support frame, the side face of support frame away from tower crown base is equipped with bottom layer partial pressure layer, the side face of bottom layer partial pressure layer away from support frame is equipped with middle layer partial pressure layer. The device is combined through honeycomb aluminum core filling body and light alloy steel frame, the overall weight of equipment is lightened, can effectively reduce the load of building whole, utilizes the cross -shaped reinforcing rib and reinforcing ring of support frame, can realize material efficient distribution while guaranteeing equipment rigidity, and the reduction of equipment structure dead weight can effectively reduce foundation cost, can effectively solve many traditional tower crown and adopt closed solid structure or heavy -duty decorative component, is easy to appear because own weight is too big, thereby increases building whole load, makes the problem of building cost increase.

The invention provides a building joint waterproof test water pressure space and a construction method thereof. The water pressure space is arranged in a splicing joint of two solid structures. A cover plate, a sealing strip and a lateral sealing body which are connected with the solid structure in a sealed mode are arranged on the periphery of the water pressure space, the cover plate and the sealing strip are oppositely arranged, and the lateral sealing body is arranged between the cover plate and the sealing strip and connected with the cover plate and the sealing strip in a sealed mode. According to the method, the water pressure space with good stability and sealing performance can be constructed in the splicing seam of the scale entity, the application range is wide, operation is easy and convenient, rapidness and high efficiency are achieved, control is easy, and the accuracy and reliability of the waterproof performance test result are ensured.

The application discloses an embedded vertical NPR surface wave isolation resonator and isolation barrier, and belongs to the technical field of earthquake protection. The NPR surface wave isolation resonator comprises a top concrete cap, a first NPR frame layer, a steel column, a second NPR frame layer, a bottom concrete cap and a concrete packaging box. The first NPR frame layer and the second NPR frame layer are both spliced from a negative Poisson's ratio solid structure with a negative Poisson's ratio effect of a rubber material and are embedded between the concrete cap and the steel column. The application has the advantages that the traditional earthquake metamaterial isolation barrier can not only realize an ultra-wide and ultra-low frequency band gap but also ensure the durability and strength of the resonator structure as a whole when the resonator as a whole is subjected to stress vibration deformation, and when isolating seismic waves, the negative Poisson's ratio solid structure plays a role in energy absorption and energy dissipation, and the resonator itself has the characteristics of local resonance, thereby being capable of coping with the ultra-low frequency band gap generated by the ultra-low frequency seismic wave.

The utility model belongs to the technical field of vehicle structural members, and discloses a tubular beam and a frame. The tubular beam comprises a tubular beam body, at least two longitudinal connecting parts and at least one transverse connecting part. The cross section of the tubular beam body is of a rectangular structure, the tubular beam body is hollow, and reinforcing ribs are formed on the inner wall of the tubular beam body and located in a hollow cavity of the tubular beam body. The longitudinal connecting parts are formed at the two ends of the tubular beam body correspondingly and used for being connected with longitudinal beams on the two sides correspondingly. The transverse connecting part is formed on the tubular beam body and used for being connected with a cross beam. Blind holes are formed in one or more of the two end walls of the tubular beam body, the longitudinal connecting parts and the transverse connecting parts. The pipe beam body is of a hollow structure, the blind hole design is combined, and the material consumption can be remarkably reduced. In addition, a traditional solid structure is replaced by the blind holes, the overall weight can be reduced on the premise that necessary strength is kept, the automobile lightweight trend is met, and the energy efficiency and the control performance of the automobile are improved.

The application provides a tetrahedron structure and a debris flow volume and density decay rate prediction method, a model construction method and a regulation method, and relates to the technical field of debris flow control. The tetrahedron structure is a regular tetrahedron solid structure, a regular tetrahedron solid frame structure or a regular tetrahedron solid sphere branch structure. The debris flow volume and density decay rate prediction method is calculated through a prediction model. The model construction method is obtained by analyzing the regulation factors of the tetrahedron structure on the volume and density of the debris flow by using the dimensional analysis method. The volume and density regulation method adjusts and optimizes the best throwing interval and arrangement mode of the tetrahedron structure based on the prediction results of the debris flow volume and density decay rate, and then throws the corresponding tetrahedron structure in the target channel by using the numerical simulation method or the debris flow dam break simulation experiment device. The application is flexible in arrangement, can effectively regulate the volume and density of the debris flow, enriches the measures and technical means for regulating the volume and density of the debris flow, and provides key parameter support and technical support for the prevention and control work.

This invention relates to the field of underground engineering and computational geotechnical mechanics numerical simulation technology, and discloses a method for simulating fluid-solid damage coupling in tunnels based on dynamic mapping of solid-structure units. The method first constructs a three-dimensional spatial discrete model, including three-dimensional solid units such as ordinary surrounding rock, consolidated grouting ring or loosened surrounding rock, and lining, as well as internal reinforced structural units, and sets stepped water pressure boundary conditions. It then constructs a non-common-node mapping dictionary based on dual constraints of spatial angle and distance. After performing fluid-solid alternation solutions, it extracts characteristic parameters to calculate the joint damage evolution of the consolidated grouting ring solid unit or the loosened surrounding rock solid unit and the lining solid unit. For the lining solid unit, it performs permeability characteristic reconstruction based on dual control of damage variables and crack opening; for the consolidated grouting ring solid unit or the loosened surrounding rock solid unit, it performs permeability coefficient updates based on effective stress and damage variables, achieving high-precision prediction of the joint disaster evolution of high-pressure water-filled tunnels.

The invention belongs to the technical field of structural design and mechanical property analysis, and particularly discloses a dot matrix entity mixed structure and a design method thereof.The method comprises the following steps that an entity structure model and a cubic structure model are constructed and subjected to topological optimization, and an optimized entity structure and a TOPO lattice are obtained; the TOPO crystal lattice and the BCC or FCC regular crystal lattice are geometrically coupled to form a hybrid crystal lattice; embedding the hybrid lattice into a low-density region in the optimized entity structure, and constructing a lattice entity mixed structure; a finite element model is established on the basis of an explicit dynamics platform, three-point bending boundary conditions are applied, load-displacement response and stress distribution of a hybrid structure are analyzed, and then layout and parameters of hybrid lattices and the shape of an entity structure are adjusted according to analysis results. According to the method, collaborative optimization of the bearing capacity, the bending rigidity and the energy absorption efficiency of the structure can be achieved, a systematic simulation verification process is established, and an efficient design basis is provided for engineering application.

The utility model discloses a positioning tool for a shell of a valve actuator in the field of valve actuator processing, which comprises a bottom plate, a back plate arranged on the back side of the bottom plate, a back positioning structure arranged in the middle of the front side of the back plate, a lower adjusting structure arranged in the middle of the front side of the bottom plate, and side pressing and fixing structures arranged on two sides of the back plate. A lower pressing and fixing structure is arranged at one end of the bottom plate; the shell and the back plate of the actuator are preliminarily positioned through the rear positioning structure, then the shell and the bottom plate are positioned through the lower adjusting structure, so that the shell is successfully positioned, and then the positioned shell is pressed and fixed to the back plate and the bottom plate through the side pressing and fixing structure and the lower pressing and fixing structure; therefore, the front face and the upper face of the shell are completely exposed in the visual field, finish machining of the two faces is facilitated, meanwhile, due to the fact that the shell is fixed, operation is more convenient, and the problem that the shell deviates during operation does not need to be worried about.

The utility model discloses an anti-jamming switching valve which comprises a valve body, a valve element, a coupling, a connecting pin and a valve rod, the valve element is arranged in the valve body, the first end of the coupling is connected with the valve element through the connecting pin, the second end of the coupling is connected with the valve rod, the valve rod is used for adjusting the valve element to achieve the switching function, and the valve element is connected with the coupling through the connecting pin. Wherein the connecting pin is of a solid structure. The connecting pin of the solid structure is adopted, the material distribution of the connecting pin is more uniform and compact through the solid structure, and compared with a hollow connecting pin, the connecting pin can bear larger stress and torque. Therefore, during the switching operation of the oil cooler, the solid connecting pin can better resist the action of various external forces and is not easy to deform or break, so that the reliability of the connection between the coupling and the valve core is ensured. Therefore, the situation that the valve element cannot be lifted due to the fact that the connecting pin is bent or broken is avoided, and the problem of jamming of the switching valve is effectively solved.

A kind of high-current power type thermosensitive chip and its preparation method;Effectively solve the premise of not increasing product volume, significantly improve the current carrying capacity of chip, its technical scheme is as follows:The thermosensitive chip uses composite material, the composite material includes main material and composite additive;The weight percentage of each component in the main material is as follows:Manganese tetroxide Mn₃O₄: 30-70%, zinc oxide ZnO: 10-30%, copper oxide CuO: 8-20%, cobalt tetroxide Co₃O₄: 1-10%;The composite additive accounts for 1-10% of the weight of main material;The beneficial effects of the present application are as follows:Multi-layer ring structure design is adopted, a synergistic heat dissipation mechanism is formed, which is beneficial to heat dissipation in the upward and downward directions simultaneously, avoiding the "thermal bottleneck" effect of heat accumulation in the center area of solid structure;Effectively solve the technical bottleneck of traditional power type thermistor relying on increasing volume to improve current capacity, have outstanding industrial application value, improve thermal stability and durability at the same time.