24results about How to "Reduce stress damage" patented technology

The invention discloses a semiconductor structure and a preparation method thereof. The preparation method of the semiconductor structure comprises the following steps: providing a first substrate; forming a compound semiconductor layer on the first substrate; forming an active layer on the compound semiconductor layer; bonding a second substrate on the surface of the active layer; an etching process is adopted to remove the compound semiconductor layer and the first substrate so as to expose the active layer, and the etching selection ratio of the active layer to the compound semiconductor layer is larger than that of the active layer to the first substrate; and forming a metal wiring layer on the surface of the active layer. According to the semiconductor structure preparation method, the stress damage to the wafer in the wafer thinning process can be reduced, so that the product yield can be improved.

The utility model discloses a high-parameter thermal power generating unit depressurization blowpipe temporary system, which belongs to the technical field of unit depressurization blowpipes and comprises a primary steam-water system, a secondary steam system, a target plate device and a silencer which are sequentially connected. The primary steam-water system comprises a separator, a superheater and a main steam pipeline which are connected in sequence, the secondary steam system comprises a hot resteam pipeline, a reheater and a cold resteam pipeline which are connected in sequence, the cold resteam pipeline is provided with a main adjacent blowing door, the main steam pipeline is communicated with the cold resteam pipeline through a high-pressure bypass pipeline, and the reheater is communicated with the high-pressure bypass pipeline. And the high-pressure bypass pipeline is provided with a high-pressure bypass adjacent blowing door. The secondary steam system and the high-pressure bypass system both participate in pipe blowing heat storage, the effective time of pipe blowing each time can be prolonged, the pipe blowing frequency is reduced, high efficiency and energy conservation are achieved, and stress damage to a boiler is relieved.

The invention provides a composite glaze layer, glazed glass, a photovoltaic module and a vehicle, the composite glaze layer is arranged on base material glass and comprises a protective layer and at least one functional layer, the protective layer covers the surface and the side face of the functional layer, and the tail end of the protective layer is in contact with the surface of the base material glass; wherein the proportion of the dense contact area between the protective layer and the surface of the base material glass to the total area of the composite glaze layer is not higher than 25%. In the composite glaze layer, the protective layer mainly plays a role in blocking and protecting the functional layer so as to ensure the reliability of the whole composite glaze layer structure. Meanwhile, the dense connection between the protective layer and the base material glass only exists around the pattern, so that the dense contact area between the composite glaze layer and the base material glass is reduced to the greatest extent, and the design that the glaze layer coverage area is the dense contact area in the prior art is changed; the probability of glass stress damage and load reduction under a dense contact area is reduced, so that the strength and the safety of the glazed glass can be improved.

The invention discloses a hot-melt waterproof adhesive for optical cables and a preparation method thereof, and relates to the technical field of waterproof adhesives, the hot-melt waterproof adhesive is prepared from the following components: rubber, modified rosin resin, polymethyltriethoxysilane, a filler, stearic acid, carbon black, polybutylene adipate, an antioxidant and nanocrystalline cellulose; the waterproof glue with the sealing function is designed for the optical cable, belongs to hot-melt filling waterproof glue, and can play a plurality of functions of water resistance, moisture resistance, insulation, voltage breakdown resistance and the like for the optical cable after being filled into the optical cable.

The utility model provides an elbow pipeline damping support which comprises a supporting base, a lifting device, a vertical elastic damper, a vertical supporting rod, a bearing seat and an elbow pipeline hooping device, the lifting device is arranged on the supporting base, the vertical elastic damper is arranged on the lifting device, the vertical supporting rod is arranged on the vertical elastic damper, and the bearing seat is arranged on the vertical supporting rod. The bearing seat is arranged on the vertical supporting rod, an arc-shaped groove is formed in the upper right portion of the top of the bearing seat from left to right, the arc-shaped groove is used for bearing the bottom of the bent portion of the bent pipeline, and the bent pipeline hooping device is arranged on the groove wall of the arc-shaped groove and used for hooping the bent portion of the bent pipeline. Wherein the bent pipeline is vertically arranged in the left-right direction, one end of the bent pipeline is arranged upwards, and the other end of the bent pipeline is arranged leftwards. According to the utility model, pipeline vibration caused by water flow impact and pressure damage to the pipeline caused by building settlement can be reduced, and the problem of water leakage of the elbow pipeline caused by building settlement can be effectively prevented.

The present invention discloses an intelligent electric cylinder with load peak control, which relates to the technical field of electric cylinders and includes a push rod structure composed of a transfer sleeve and two movable rods. When the push rod structure moves to the left or right direction, the transfer sleeve serves as a structural member for buffering "energy storage" or buffering "energy release" during the movement, and its purpose is to reduce the stress damage to the movable rod caused by the reaction force generated during the load process. On the basis of the above, a corresponding control system is provided, which is specifically manifested in that the pressure values ​​in the front air cavity and the rear air cavity change, and the pressure difference between the two is fed back, which is converted into a load value, and the front position difference, the rear position difference and the equal position value are further calculated according to the pressure difference. The output power in the overall structure is reversely controlled by the above three values, and its purpose is to avoid greater stress damage to the rod caused by excessive difference under the premise of ensuring the normal operation of the overall structure.

The utility model relates to the technical field of semiconductor components, in particular to a bridge rectifier with internal jumper pieces and external terminals, which comprises a plastic package shell, a frame unit group, terminals led out from frame units of the frame unit group, four rectification chips and four jumper pieces for lap joint. The first input terminal and the second input terminal are located on one side of the plastic package shell, and the first output terminal and the second output terminal are located on the other side of the plastic package shell. The upper surfaces of four frame units of the frame unit group are respectively provided with two bonding pads, the upper surfaces of the first frame unit and the second frame unit are respectively provided with a rectification chip, and the upper surface of the fourth frame unit is provided with two rectification chips. All the rectification chips are placed on the upper surfaces of the frame units, lap joint connection is achieved through the jumping pieces, in the welding process of the tunnel furnace, the jumping pieces fall on the surfaces of the rectification chips through natural gravity, and the influence of stress borne by the chips due to frame stretching caused by high and low changes of the furnace temperature is avoided.

This utility model provides an integrated device for crushing and screening iron oxide scale, relating to the field of crushing and screening technology. It includes a machine body, with a trapezoidal cover fixedly connected to the top and one side of the machine body. Inside the trapezoidal cover are two rotating columns, each with a crushing roller fitted and fixedly connected to its surface. A triangular plate is fixedly connected to the bottom of the machine body, with a vertical plate fixedly connected to the top of the triangular plate. A second folding plate is fixedly installed on the top of the vertical plate. Square holes are provided at both the front and rear ends of the machine body, each containing a lifting plate. First folding plates are installed between the top and bottom inner walls of the square holes and the lifting plates. A fixing plate and a connecting plate are fixedly connected between the lifting plates. This utility model allows for quick disassembly of the U-shaped mounting plate, enabling the screen plate to be pulled directly from the outside of the device using a handle, without disassembling the main body of the device. This significantly simplifies cleaning and replacement processes, greatly improves maintenance efficiency, and reduces time and labor costs.

The utility model discloses a suction and hanging dual-purpose lamp convenient to install, relates to the technical field of lighting equipment, and aims to solve the problems that a hanging wire is often twisted and knotted and the installation becomes complicated when a wire is manually taken up in an existing device. The suction and hanging dual-purpose lamp comprises a light-emitting component and a lampshade fixedly connected to the top end of the light-emitting component; the main magnetic attraction piece is arranged at the top end of the lampshade, and the main magnetic attraction piece is used for attracting the dual-purpose lamp on a wall surface; the abutting plates are arranged at the top end of the lampshade. Two rectangular holes are formed in the top end of the lampshade, and the bottom ends of the dustproof boxes are fixedly connected to the top ends of the rectangular holes; and the two clockwise-winding take-up assemblies are both arranged in the dustproof box. The sucking and hanging dual-purpose lamp convenient to install has the technical effects that the hanging wire can return to a storage position in order through clockwise winding and winding, the problems of disordered winding and wire clamping possibly caused by manual wire winding are avoided, distortion, knotting and excessive extrusion during winding of the hanging wire are completely eradicated, the installation is convenient, and the service life of the hanging wire is prolonged.

The application belongs to the technical field of integrated circuit manufacturing, and relates to a circuit board drilling device with a stable clamping structure. The device comprises a shell, the shell is fixedly connected with a connecting frame, the connecting frame is slidably connected with a first electric sliding frame, the first electric sliding frame is slidably connected with a second electric sliding frame, the second electric sliding frame is slidably connected with a third electric sliding frame, the third electric sliding frame is fixedly connected with a shell body, the shell body is rotationally connected with a rotating shaft, the rotating shaft is provided with a drill bit, the rotating shaft is slidably and rotationally connected with a rotating cylinder, the rotating cylinder is rotationally connected with an upper pressing plate, the upper pressing plate is slidably connected with a lower pressing plate, and the lower pressing plate is rotationally connected with a rotating pressing ring. The circuit board is clamped by the rotating pressing ring and the supporting frame. When the circuit board is twisted around the drilling position under stress, the clamping block no longer clamps the circuit board. The circuit board drives the rotating pressing ring to rotate, reduces the stress damage of the circuit board drilling position, and even reduces the probability of deformation of the circuit board, so as to guarantee the accuracy of the circuit board drilling and improve the quality of the circuit board drilling.

The application relates to the field of flame-retardant high polymer materials, and discloses a flame-retardant PC and ABS composite material for automobile interior decoration. By constructing a core-shell flame-retardant structure, the balance between the flame retardancy and the impact toughness of the material is realized by utilizing the elastic buffer of the siloxane shell and the synergistic effect of silicon and phosphorus; by means of physical network coating and chemical grafting crosslinking of the compatilizer, interface bidirectional anchoring is formed, the outward migration of the flame-retardant component is limited, and the surface outgassing whitening under the light and heat environment is effectively reduced; and the optimized proportion makes the material meet the requirements of injection molding processability, high-temperature resistance and light weight.

The invention discloses a multi-source data fusion-based circulating water culture water quality accurate regulation and control method, and belongs to the technical field of aquaculture. The method comprises the following steps: synchronously acquiring water quality parameters, fish school images and water body particulate matter multi-dimensional data through an acquisition system consisting of a water quality sensor, an underwater high-definition camera and a water body particulate matter sensor; a dynamic association model is constructed to fuse multi-source data, a deep learning image recognition algorithm is introduced to quantify the fish school food grabbing intensity and swimming speed, early warning of fish school stress is achieved, meanwhile, a time sequence prediction algorithm is adopted to construct a water quality prediction model, and real-time and historical data and a feeding plan are fused to predict the key water quality parameter change trend in several hours in the future; on the basis of the prediction result and the early warning signal, operating parameters of the aerator and the pH adjusting pump are regulated and controlled in real time, and a feeding strategy is dynamically optimized. Cooperative monitoring and advanced regulation and control of water quality and fish shoal behaviors are achieved, the culture water quality is effectively stabilized, fish shoal stress damage is reduced, and the benefits of circulating water culture are improved.

The utility model discloses a charging pile with solar photovoltaic power generation, which comprises a support frame and a photovoltaic panel, the support frame is mounted on external equipment, the photovoltaic panel is mounted on the support frame, a mounting mechanism is arranged on the support frame, and the photovoltaic panel is mounted on the mounting mechanism. The mounting mechanism comprises a charging rod, a fixing sleeve, a follow-up sleeve, a clamping mechanism, a lateral spring, an abutting strip, a limiting rod, a top sleeve, a limiting sleeve and a fixing mechanism, the charging rod is mounted on the supporting frame, the fixing sleeve is mounted on the charging rod, the follow-up sleeve is rotationally connected to the fixing sleeve, the clamping mechanism is mounted on the follow-up sleeve, and the limiting sleeve is rotationally connected to the top sleeve. According to the structure, stress damage caused by cable movement or temperature change can be reduced while the cable fixity is guaranteed, the multiple limiting holes in the follow-up sleeve are matched with the limiting rods on the top sleeve, the precise limiting function is provided, the stability and safety of the cable in the movement process are guaranteed, and the service life of the cable is prolonged. The design not only facilitates the installation and maintenance of the cable, but also prolongs the service life of the cable.

This utility model relates to the field of lightning rod technology and discloses a lifting lightning rod for protecting photovoltaic systems. It includes a fixed plate, with a first fixed post and a second fixed post fixedly sleeved inside the top of the fixed plate. Through the linkage of a signal receiver, control panel, and motor, this utility model can automatically control the lifting mechanism to raise the lightning rod upon receiving a thunderstorm signal, ensuring timely entry into protective mode before lightning strikes and effectively avoiding protection failure due to delays or negligence caused by manual operation. Simultaneously, a buzzer and warning light automatically activate when the lightning rod is raised to remind personnel in the photovoltaic area to evacuate quickly, significantly improving personnel safety. The double-layer threaded drive lifting mechanism design ensures a smooth and reliable raising and lowering process, and allows for lowering the height during non-thunderstorm weather, reducing bird habitat, debris entanglement, and stress damage in harsh environments, extending equipment lifespan, reducing maintenance costs, and achieving efficient and intelligent protection for photovoltaic equipment.

The invention provides an anti-windage yaw power transmission support and a power transmission tower, and belongs to the technical field of power transmission supports. The anti-windage yaw power transmission support comprises a mounting rod, a supporting seat, two wire clamps and a buffer assembly; the mounting rod is fixedly mounted on a tower in the horizontal direction; the supporting seat is slidably connected to the mounting rod in the axial direction of the mounting rod. The two wire clamps are arranged on the two sides of the supporting base in the vertical direction respectively and used for fixing a cable. The two wire clamps are connected with the supporting seat through connecting components, so that the wire clamps can move towards or back to the supporting seat; the buffering assembly comprises a first buffering component and a second buffering component, and the first buffering component is arranged between the supporting base and the mounting rod so as to buffer the acting force generated when the supporting base moves; and the second buffer component is arranged between the wire clamp and the supporting seat so as to buffer the acting force when the wire clamp moves. According to the windage yaw prevention power transmission support and the power transmission tower, the supporting base slides, the wire clamp can move, and the buffering assembly buffers acting force, so that windage yaw of the cable can be effectively prevented, and the stability is improved.

The utility model relates to the field of internet of things communication technology, specifically disclose a kind of internet of things antenna, including the SMA straight male head of supporting seat, supporting seat is rotatably provided with antenna seat, antenna seat is provided with arc seat, further including the main conductor of arc conductor, arc conductor is active in arc seat, arc conductor is provided with subconductor, and subconductor is connected with antenna seat.The utility model provides an internet of things antenna, by the length of wire is reserved and obtained with arc conductor main conductor, and make arc conductor be in the installation room bulge position in arc seat, promote arc conductor have the length required to exceed wire deformation bending, and then when subconductor follow antenna seat and move, arc conductor is kept stable, effectively reduce the deformation bending of wire, weaken the stress damage caused by external force to wire, guarantee wire communication work.

The utility model discloses a nursing bed traction device which comprises a box body and a fixing frame installed at the lower end of the box body, a ball type retractor is installed in the box body, a braid is wound on the ball type retractor, and one end of the braid penetrates through the box body. The fixing frame comprises a mounting clamping plate and a fixing clamping plate rotationally mounted on one side of the mounting clamping plate, and fixing holes are formed in the lower end of the fixing clamping plate and the lower end of the mounting clamping plate. A guide column is arranged on the inner side of the box body, and the position of the guide column corresponds to the position of the braid. A rotating shaft is fixedly mounted in the middle of the mounting clamping plate; the fixing frame and the box body are designed, the box body is installed and fixed more stably through the fixing frame, the braid is wound through the ball type retractor in the fixing frame in the using process, the braid is slightly pulled out of the box body in the using process, the braid is heavily pulled to be locked through the ball type retractor when a patient sits up, and therefore the patient pulls up through the braid, and the patient can sit up conveniently. And the use is more convenient.

A multifunctional lifting storage bed frame structure comprises a base, a movable bottom frame located above the base and two supporting assemblies located between the base and the movable bottom frame. Each supporting assembly comprises a first connecting rod, a second connecting rod and a plurality of fixed supporting legs arranged on the top face of the base, the lower ends of the first connecting rods and the lower ends of the second connecting rods are hinged to the base, and the upper ends of the first connecting rods and the upper ends of the second connecting rods are hinged to the movable bottom frame. Bracket electric driving devices are arranged on the left side or / and the right side of the top face of the base, and the telescopic end of each bracket electric driving device is connected with the corresponding second connecting rod. The function of synchronous lifting of the movable bottom frame and the supporting bed frame can be achieved, and the storage lifting requirement of a user is met; meanwhile, the movable bottom frame which is reset to the horizontal state is supported by the fixed supporting legs, so that the probability that parts such as the first connecting rod, the second connecting rod and the bracket electric driving device are damaged due to stress is effectively reduced, and the purpose of prolonging the service life of the storage bed is achieved.

The invention provides a foamed aluminum filled profile and a preparation method thereof, and the preparation method comprises the following steps: S1, preparing a metal profile with a cavity, and making foamed aluminum into a shape matched with the cavity of the metal profile; s2, the outer side of the foamed aluminum is wrapped with a layer of fabric soaked with an adhesive, and the friction coefficient of the fabric and the metal profile is smaller than that of the foamed aluminum and the metal profile; s3, thrust is applied to the foamed aluminum, and the cavity of the metal profile is filled with the foamed aluminum; and S4, the metal profile filled with the foamed aluminum is subjected to standing till the adhesive is cured, and the foamed aluminum filled profile is obtained. According to the novel method for mechanically filling the foamed aluminum into the metal profile, the filling pressure needed for pushing the foamed aluminum can be reduced, and it is guaranteed that the position of the filled foamed aluminum is fixed.

The utility model discloses a kind of heat-resistant transport mesh belts suitable for high-temperature environment, including mesh belt body, the bottom of mesh belt body is provided with cooling assembly;The cooling assembly includes base, the top of base is fixedly connected with base column, fixedly connected with support frame between two base columns, the movable end of hydraulic lift rod is fixedly connected with water storage tank, the sidewall top of water storage tank is fixedly connected with extension plate, the outer wall of rotating shaft is fixedly connected with water-absorbing sponge cover, water-absorbing sponge cover and transport mesh belt body are in close contact, the utility model relates to transport equipment technical field;The heat-resistant transport mesh belt suitable for high-temperature environment, water-absorbing sponge cover and mesh belt body are in close contact, by absorbing cooling water in water storage tank, utilize moisture evaporation to take away heat in the process of mesh belt operation, realize the sustained cooling of mesh belt;Compared with traditional air cooling or spraying, this mode cooling is uniform and avoids mesh belt local sudden cooling, reduces stress damage, and cooling effect is more optimal.

The present invention discloses a torsion-resistant, electromagnetic radiation-resistant, low-attenuation, stable-phase signal cable for aviation, including a cable provided with a conductor, and also including an armor ring provided on the outside of the conductor and arranged in a spiral shape, and a compression member provided in the cable, and the compression member is divided into an elastic sheet and a pressure plate according to the function, and the elastic sheet is driven by the bending to cause the pressure plate to move radially and squeeze the outer diameter of the armor ring, so that the inner diameter of the armor ring is reduced to form an inner ring. The torsion-resistant, electromagnetic radiation-resistant, low-attenuation, stable-phase signal cable for aerospace measurement and control systems provided by the present invention drives the armor ring to tighten and curl toward its axis during the bending process of the cable to form an inner ring with a reduced pitch, so that the inner ring has a significantly improved anti-bending ability, and increases the anti-stress effect of the bending position of the cable, and the pressure plate with a deformation effect can also reduce the stress at the inner ring position, greatly reducing the stress damage problem of the conductor, and improving the safety of cable use and communication effect.

The utility model discloses an enhanced zero-point quick-change device. A shell of the quick-change device is composed of an upper shell body, a locking seat, a barrel body and a rear cover. The interior of the quick-change device is divided into an upper chamber and a lower chamber by the locking seat; a blind rivet locking cavity used for locking a blind rivet is formed in the center of the upper shell, a plurality of locking pin holes are formed in the side wall of the upper shell in a surrounding mode, movable locking pins are arranged in the locking pin holes, a first piston is arranged in the upper cavity, and a first spring is arranged between the first piston and the locking base; a second piston is arranged in the lower cavity, and a second spring is arranged between the second piston and the rear cover. A steel ball is arranged on the side wall of the locking seat, and a plurality of air inlet holes are formed in the shell and communicated with the upper cavity and the lower cavity respectively. According to the enhanced zero-point quick-change device, the blind rivet is locked through the two sets of power devices, and the locking stability of the blind rivet is greatly improved.

The invention discloses a convenient-to-clean filter, which belongs to the technical field of gas desulfurization and comprises a mounting shell assembly, an exhaust assembly, an automatic cleaning assembly and a cleaning plate, the exhaust assembly is detachably connected to the top end of the fixed shell, the automatic cleaning assembly is arranged in the fixed shell, and the cleaning plate is in linkage with the automatic cleaning assembly and abuts against the upper surface of the filter screen. After a follow-up gear is meshed with a driving gear, a driving motor drives the cleaning plate to stably move along a guide rod and a limiting rod through a two-way screw, the cleaning plate always abuts against the surface of the filter screen, reciprocating cleaning is achieved through the two-way thread design, the impurity removal rate is increased, and the cleaning efficiency is improved. No cleaning blind area exists; and the cleaning process does not need to be manually disassembled and can be synchronously completed in the filtering process, shutdown cleaning is avoided, the production interruption cost is greatly reduced, and the device is particularly suitable for continuous production scenes.