51results about How to "Avoid stress" patented technology

The present application relates to the technical field of metal material chemical cleaning, and discloses an environment-friendly cleaning agent for degumming of a metal surface, comprising: tert-butyl hydrogen peroxide, diethylene glycol monobutyl ether, polyoxyethylene polyoxypropylene copolymer with a multi-branched structure, and deionized water, wherein the diethylene glycol monobutyl ether forms an associated structure with the tert-butyl hydrogen peroxide through hydrogen bonds; after the cleaning agent penetrates into the gap between the oxide film and the gum layer on the metal surface, the Lewis acid center of the oxide film competitively cuts the hydrogen bonds, induces in-situ decomposition of the tert-butyl hydrogen peroxide to release oxygen, and the interface pressure generated by the oxygen converts chemical energy into normal mechanical work, realizes whole peeling of the gum layer from the interface root, suppresses diffusion loss of the solvent in the gum layer body phase, and shortens the cleaning period without damaging the metal matrix.

The utility model relates to the technical field of dies, and particularly discloses a high-precision special-shaped copper strip forging forming die which comprises an upper die, a lower die is placed above the upper die, isolation pads are arranged at the two ends of the upper die and the two ends of the lower die, and positioning grooves are formed in the faces, corresponding to the isolation pads, of the upper die and the lower die. A positioning block is fixedly mounted on the outer portion of each isolation pad, each fixing mechanism comprises a built-in groove, a guide groove, a sliding block, a moving groove and a handle, and before the upper mold and the lower mold are mounted, the positioning blocks on the outer portions of the isolation pads are inserted into the positioning grooves; at the moment, the handle is moved to drive the sliding block to move towards the outside of the guide groove until the sliding block is clamped in the built-in groove, the handle cannot move at the moment, the isolation pad is installed at the moment, the isolation pad avoids local stress concentration and surface damage caused by direct contact of the mold and the pressing block screw rod, and therefore the flatness of the surface of the mold is guaranteed; and the overall precision of the mold is guaranteed.

The invention relates to the technical field of electrochromic materials and glass preparation, in particular to a preparation method of sandwich type all-solid-state inorganic electrochromic glass which is formed by sequentially compounding a tempered glass layer, a film layer and an electrochromic film layer pile. The thickness of the tempered glass layer is 4 mm, and the film layer is a PVB film and is 0.76 mm thick. The electrochromic film layer stack takes sodium-calcium non-tempered glass with the thickness of 3mm as a substrate, and an anti-ion diffusion layer, a first conductive layer, a first resistive layer, a negative electrode color changing layer, a second resistive layer, a positive electrode color changing layer, a third resistive layer, a second conductive layer and an outermost protective layer are sequentially arranged on the surface of the substrate from inside to outside; the anti-ion diffusion layer is a silicon dioxide layer, and the thickness is 200 nm. According to the preparation method of the sandwich type all-solid-state inorganic electrochromic glass provided by the invention, through precise design of each film layer structure of the glass and gradient optimization of a preparation process, the comprehensive performance of a product is synergistically improved, and many problems in the prior art are effectively solved.

This utility model discloses an integrated multifunctional intubation device with flushing, drainage, and drug administration functions. The device includes an intubation tube, a three-way drug administration flushing and drainage device, a connecting tube, and an anti-backflow negative pressure drainage ball. The inner surface of the intubation tube has supporting teeth to prevent compression closure. One end is a connecting section, and the working section's tail end is fish-mouth shaped with staggered flushing holes on its smooth surface. The outer circumference of the intubation tube has an "I"-shaped fixing ring. The three-way valve is connected to the anti-backflow negative pressure drainage ball through the connecting tube, allowing liquid in the intubation tube to flow into the drainage ball, preventing backflow and allowing liquid to flow out through the drain hole. The connections between the connecting tube, the intubation tube, and the three-way valve are all threaded and tightened. This device integrates multiple functions, has a reasonable structural design, and can effectively realize flushing, drainage, and drug administration operations, while also preventing blockage of the intubation tube due to compression and dislodgement due to external force.

This invention discloses a cable chain forging device, belonging to the field of hardware forging technology. It includes a base, with an auxiliary mechanism featuring a processing table mounted on the top of the base. The processing table is fixedly mounted on the top of the base. A flow-dispersing mechanism with a ring frame is located near the top of the base and the ring frame is rotatably mounted on the top of the processing table. A long plate is connected to the surface of the ring frame near the processing table, and multiple air nozzles for blowing and dispersing air onto the cable chain are connected to the surface of the long plate near the processing table. This invention uses a heating box and an air pump to deliver heat to the ring frame and blows air onto the cable chain on the processing table through the air nozzles on the long plate, providing a stable and suitable temperature environment for the cable chain. It can also more accurately maintain the temperature of the cable chain during the forging process, avoiding changes in material properties due to temperature fluctuations, thereby effectively ensuring the quality and precision of the cable chain forging and improving the mechanical properties and stability of the finished cable chain.

The utility model discloses a zero pressure suit version structure belongs to clothing version structure technical field, including front piece, back piece, side piece, sleeve and chest lining, the chest lining is connected on the front piece, the chest lining top is provided with the shoulder pad modeling part, the back piece with front piece, side piece, sleeve sewing connection place all is provided with the gathering area for making scapular region of back piece form three -dimensional volume, back piece with front piece connection place forms shoulder oblique, the angle of shoulder oblique is located 21~23, the utility model breaks through the pain point of traditional suit multiple position compression, around ergonomics, with realizing basic zero pressure body feeling as the core, considers the feeling of each easily oppressed part of human body when wearing suit, improves the wearing comfort degree.

This invention belongs to the field of polymerization reactions and discloses a reaction system and method for the precipitation polymerization of α-olefins with maleic anhydride. The system includes a reaction circulation subsystem and an external circulation temperature control subsystem. The reaction circulation subsystem includes a reaction vessel, a reactor, a reaction circulation pump, and a mixing connection device. The reaction vessel includes a vessel body, a jacket, a stirring device, and a first non-condensable gas outlet. The reactor includes a reaction liquid chamber, an external circulation liquid chamber, and a second non-condensable gas outlet. The external circulation liquid chamber is arranged around the outside of the reaction liquid chamber and is not connected to it. The external circulation temperature control subsystem includes an external circulation buffer tank, an external circulation pump, an external circulation heater, and an external circulation cooler. This invention, through a segmented reaction system, separates the heating and cooling functions of the reaction vessel, meeting the heating and cooling requirements of the precipitation polymerization of α-olefins with maleic anhydride in different solvent systems at different reaction stages.

This invention relates to the field of optical measurement equipment technology, specifically disclosing a mirror fixing device for optical measurement, comprising: a base, wherein a support rod is slidably connected to the base, and a fixing frame is fixedly connected to the support rod; a rotating shaft, rotatably connected to the fixing frame, a connecting frame being fixedly connected to the rotating shaft, and two support shafts being rotatably connected to the connecting frame, with a fixing shell fixedly connected between the two support shafts; two fixing columns, each fixedly connected to both sides of the fixing frame, each fixing column being slidably connected to a sliding rod, and a guide ring being fixedly connected between the two sliding rods; and a connecting shell, fixedly connected to one side of the fixing shell, with a ball-end rod slidably connected to the connecting shell. This invention eliminates the need for easily fatigued springs, employing a fully mechanical threaded sleeve and worm gear transmission mechanism to achieve angle and direction adjustment. This mechanical structure eliminates the problem of elasticity attenuation and has strong resistance to vibration interference.

The utility model discloses a kind of durable corrugated box compression testing device, including bottom plate, the top side of bottom plate is equipped with long slot, long slot is cross-shaped, fixedly installed with placing plate in long slot, through the collaborative design of driving assembly, transmission assembly and clamping assembly, effectively solve the carton side fixed problem, motor as driving source, drive first bidirectional screw rod rotation, through the multistage transmission of first synchronous wheel, synchronous belt, second synchronous wheel, transmission rod, first bevel gear and second bevel gear, make first bidirectional screw rod and second bidirectional screw rod reverse rotation, since the thread rotation direction of two screw rods is opposite, the slider of its outside drives fixed rod and clamping plate synchronous to carton four sides and adhere, after clamping plate and carton side contact, limit the displacement of carton when testing, inclination, ensure that vertical pressure evenly conducts to carton surface, avoid the test force value deviation caused by side no constraint, improve the accuracy and reliability of test data.

This invention relates to the field of vacuum forming machine technology, and proposes a negative pressure integrated vacuum forming machine and method. The machine includes a support platform, a mounting frame fixedly connected to the top of the support platform, a material feeding frame on the inner side of the mounting frame, a lifting mechanism on the inner side of the mounting frame, an infrared heater fixedly connected to the top of the inner side of the mounting frame, and a vacuum forming mechanism below the material feeding frame. The vacuum forming mechanism includes a mold, with an air cavity at the bottom of the inner side of the mold. A three-way pipe communicating with the interior of the air cavity is fixedly connected to the bottom of the mold. One end of the three-way pipe is fixedly connected to an air outlet pipe, and the other end is fixedly connected to an air inlet pipe. A dual-axis motor is fixedly installed inside the support platform. An air extraction component is provided at the outlet end of the air outlet pipe, and an air inlet component is provided at the inlet end of the air inlet pipe. This invention effectively solves the technical defects of traditional vacuum forming machines through uniform negative pressure adsorption in the air cavity, rapid cooling in the annular cavity, non-destructive positive pressure demolding, and integrated power transmission.

The utility model discloses a kind of intelligent circuit breaker combination brake drive mechanism and intelligent circuit breaker, intelligent circuit breaker combination brake drive mechanism includes the casing of operating mechanism installation, and drive source piece and reduction drive assembly are transmissionally connected and installed in casing, further include transmission gear and push rod;Transmission gear is engaged with reduction drive assembly, and part gear one is fixed with on the back of transmission gear coaxially;The push rod is rotatably installed on casing and can be driven operating mechanism by connecting rod brake, and its upper portion extends to casing outside, and its lower portion is fixedly provided with part gear two, part gear two and part gear one tooth profile match, and realize unidirectional intermittent meshing transmission when transmission gear forward rotation;Intelligent circuit breaker includes above-mentioned intelligent circuit breaker combination brake drive mechanism.The utility model has compact structure, reliability is greatly promoted, operation safety is high, manual operation convenience is good, state perception precision and control intelligentization and the like advantages.

This invention relates to the field of printing machinery manufacturing technology and discloses a printing roller rounding machine with machine vision flaw detection. The machine includes a base with a groove on its top. A movable seat is slidably connected to the inner side of the groove. A flaw detection mechanism is located on the top right side of the movable seat. The flaw detection mechanism includes a bracket, which is fixedly connected to the rear end of the top right side of the movable seat. A hydraulic rod is fixedly connected to the inner side of the bracket, and a connecting rod is rotatably connected to the top of the hydraulic rod. An arc-shaped plate is rotatably connected to the front side of the bracket. This invention uses a motor to drive a lead screw to rotate, which in turn moves the movable seat, enabling the flaw detection mechanism and the rounding mechanism to move freely along the printing roller axis. It can perform full-coverage scanning of printing rollers of different lengths and specifications, and uses a polarizing filter in conjunction with a lamp inside a hollow plate to supplement lighting, eliminating specular high-gloss reflections on the surface of the metal printing roller.

This utility model discloses a support system for extending power generation by staggering peak hours of floating photovoltaic power generation at sea, belonging to the field of photovoltaic power generation technology. It includes a float with multiple columns fixedly connected side-by-side on both sides, each column having a hinged inclined beam at its upper end; multiple adjustment mechanisms corresponding to the inclined beams, used to adjust the rotation angle of the inclined beams relative to the columns and maintain a fixed position at a specific angle; multiple purlins arranged parallel to the column arrangement direction and symmetrically fixed to the inclined beams on both sides of the float; and two sets of photovoltaic modules, respectively fixedly installed on the purlins on both sides of the float, facing due east and due west respectively, with their tilt angle changing with the tilt angle of the inclined beams. This utility model can extend power generation time by staggering peak power generation through symmetrical east-west arrangement. Simultaneously, the change in azimuth angle reduces the shadow distance between the front and rear modules, reducing the size of the float and lowering relative costs. Furthermore, the maximum power can be tracked in real time by adjusting the angle, improving power generation efficiency and float area utilization.

The utility model discloses a kind of wound decompression nursing pads, including nursing pad main body, nursing pad main body is equipped with the hollow portion for corresponding with wound and the slot for fixing drainage tube, hollow portion is through the upper and lower surfaces of nursing pad main body, slot is set in the upper surface of nursing pad main body.The nursing pad main body of the utility model is equipped with hollow portion, when using, by the hollow portion and the wound of patient corresponding, avoid the wound of patient in body position change or sick lateral decubitus process to be pressed and rub, to avoid appearing wound pain aggravation, ensure that wound tissue has normal healing environment, solve the problem that body position changes difficultly caused by postoperative pain.In addition, the nursing pad main body of the utility model is also equipped with the slot being communicated with hollow portion, the range of activity of drainage tube can be limited by being placed in slot to drainage tube, prevent pipeline from bending when body position changes, ensure the patency of drainage system.

This invention discloses a slope adjustment device for precast T-beams in bridge engineering, comprising: a slope adjustment base plate with four adjusting seats evenly connected to its top; a slope adjustment top plate positioned above the base plate, with two receiving seats connected to its bottom sides; and a support plate installed within the receiving seats, its bottom end hinged to the tops of the two adjusting seats, with an angle indicator unit at the hinge point of the support plate for displaying the rotation angle of the top of the adjusting seats. This invention transforms the point support of the adjusting seats on the slope adjustment top plate into surface support. The support plate provides stable support for the slope adjustment top plate, improving the uniformity of force distribution on the plate. The angle indicator unit at the hinge point of the adjusting seats allows for direct measurement of the angle adjustment amount of each adjusting seat, ensuring consistent and accurate adjustment, reducing adjustment difficulty, and preventing stress on the slope adjustment top plate during installation due to differences in adjustment amounts, thus maintaining the stability of the slope adjustment top plate.

The utility model relates to metal processing technical field especially is a kind of integrated cryogenic treatment equipment of high speed steel circular saw blade, including mounting bracket, the top of mounting bracket is fixed with ladder workbench, the middle part of ladder workbench upper surface is slidably matched with mobile elastic clamping mechanism, the side of ladder workbench upper surface is provided with mounting groove, the inboard of mounting groove is installed with liquid nitrogen injection mechanism, the other side of ladder workbench upper surface is fixed with resistance heating mechanism;Mobile elastic clamping mechanism includes mobile seat, the top of mobile seat is installed with telescopic link, the telescopic end of telescopic link is hinged with hinged frame, the top of hinged frame is fixed with clamping disc subassembly;Clamping disc subassembly includes support disc, the bottom of support disc is fixed with connecting seat, in the utility model, integrated layout integration cryogenic and tempering, effectively solve the problem that artificial transfer leads to cryogenic effect damage, saw blade performance is not good, improves saw blade processing quality.

This invention discloses a manufacturing equipment and method for hot roughing universal joints used in metallurgical steel rolling. The equipment includes a worktable with four support legs at its bottom and a central control system at its top. It also includes a speed-changing support mechanism mounted on the top of the worktable, with two fixing mechanisms on the mechanism. The two fixing mechanisms respectively fix the universal joint and a flange. This supports the universal joint and the flange, enabling synchronous rotation and position adjustment, providing stable support for subsequent welding, straightening, and other processes. This device significantly improves welding quality by refining grains and dispersing impurities through multi-field coupling; avoiding surface damage through non-contact creep straightening; achieving micron-level straightening through ultrasonic rolling; forming a deep residual compressive stress layer to improve fatigue resistance; reducing human error through automated closed-loop control; adapting to various workpiece specifications; and significantly improving efficiency and reducing costs through integrated processing.

This invention relates to the fields of fine chemicals and polymer materials technology, specifically a method for manufacturing toy adhesives. It includes steps for preparing the adhesive base material, preparing borax solution, and cross-linking molding. Polyvinyl alcohol, guar gum, methylparaben, etc., are prepared as base materials, which are then reacted with borax solution to undergo a cross-linking reaction. The core of this invention is the strict limitation of specific high-temperature ranges and constant-temperature stirring times during the base material preparation process, which promotes the complete extension and entanglement of molecular chains, constructing a dense and uniform three-dimensional network structure. This invention effectively avoids microscopic particle residue and stress concentration, achieving a significant improvement in the tensile strength, elongation at break, and resilience of the toy adhesive.

This invention belongs to the field of fluid machinery and tribology, and discloses a ceramic friction pair thrust disc suitable for high-temperature operation of sealless pumps. The ceramic friction pair thrust disc includes a metal thrust disc base, a ceramic friction ring, a metal bushing, and fastening screws. This invention achieves uniform circumferential stress transmission by setting an integral metal bushing around the ceramic friction ring and using an interference fit determined based on thermal expansion difference and strength verification. This structure effectively avoids the problem of localized stress concentration or cracking of the ceramic ring caused by empirically determined interference fit values ​​in existing technologies. By rationally controlling the interference range, the metal bushing can maintain a pressing effect on the ceramic ring under high-temperature conditions without exceeding the allowable strength of the ceramic material, ensuring that the ceramic end face remains flat for a long time. Compared with the traditional solution that relies solely on large interference fit, this invention can provide a stable and controllable pressing force at high temperatures.

This utility model relates to the field of welding equipment technology, and in particular to an adaptive positioning platform for automated welding equipment. It includes a welding worktable, on which a clamping assembly is mounted. The clamping assembly includes a positioning base, a support plate fixedly connected to the upper end of the positioning base, a protective shell fixedly connected to the upper end of the positioning base, and a locking assembly fixedly connected to the upper end of the protective shell. A cover frame is fixedly connected to the upper end of the locking assembly by bolts, and a sealing plate is fixedly connected to the inner side of the cover frame by adhesive bonding. A telescopic unit is inserted into the inner side of the sealing plate. The locking assembly includes a sandwich plate. In this utility model, during use, the device can find a suitable contact point on the edge of the workpiece and effectively clamp it. By injecting air, the clamping force of the clamping part is finely adjusted, achieving stress dispersion during welding operations and effectively avoiding slight workpiece displacement and localized stress concentration caused by uneven clamping force.

This invention discloses a physiotherapy device for rheumatic and immunological diseases. The device comprises two rotatably connected semi-annular housings. Inside each housing is a first motor and a second motor. The first motor drives an arc-shaped reciprocating plate in linear reciprocating motion via a reciprocating lead screw. The second motor drives first and second arc-shaped racks in reciprocating circular motion along a first semi-annular groove on a track plate via a central gear, and synchronously moves a massage block and massage rod via a second limiting rod. The massage rod achieves periodic extension and retraction under the action of the wave-shaped rack and spring, forming a composite massage trajectory of linear reciprocating motion, circular reciprocating motion, and downward pressure extension and retraction, avoiding damage caused by fixed-point massage and better conforming to the physiological characteristics of joint soft tissues. An external fumigation module is also integrated into the housing, which can heat medicinal liquid to generate steam that is introduced into the housing, achieving synergistic treatment of fumigation and massage. This invention enables dynamic, multi-angle massage combined with hot medicinal fumigation, improving the physiotherapy effect for rheumatic and immunological diseases.

The application provides a wind power tower connecting structure and relates to the technical field of wind power generation. The connecting mechanism comprises an upper connecting mechanism and a lower connecting mechanism. The upper connecting mechanism comprises an upper connecting inner cylinder, and the lower connecting mechanism comprises a lower connecting inner cylinder. The upper connecting inner cylinder is sleeved at the inner upper end position of the lower connecting inner cylinder. A lower top ring is fixedly arranged at the upper end of the lower connecting inner cylinder. A plurality of lifting mechanisms are hingedly arranged on the surface of the lower top ring at equal intervals. Each of the plurality of lifting mechanisms comprises a lever. A supporting plate and a triangular pressing plate are fixedly arranged at the upper end and the lower end of the lever, respectively. A plurality of movable holes are formed in the surface of the lower top ring at equal intervals. The relative soft connection greatly reduces the influence of tower shaking on the connecting position and avoids metal fatigue damage of the tower connecting position caused by repeated shearing force and tension.

A three-branch, six-DOF (degrees of freedom) parallel composite robot includes a carrier body that moves with a planar mobile platform. The carrier body is equipped with a six-DOF attitude adjustment mechanism and an electronic control module. A moving platform module is mounted on top of the six-DOF attitude adjustment mechanism. The six-DOF attitude adjustment mechanism includes three branches, each branch comprising a lateral sliding joint and a vertical sliding joint connected by a cross-slider. The lateral sliding joint is mounted on a first mounting plate and driven by a first lead screw, while the vertical sliding joint is mounted on a second mounting plate and driven by a second lead screw. The second mounting plate is connected to the moving platform module via a ball joint. When the planar mobile platform is locked, the six-DOF attitude adjustment mechanism achieves six-DOF pose adjustment of the moving platform module through the coordinated movement of the lateral and vertical sliding joints of the three branches. This invention features high load capacity, high rigidity, and a large extension ratio, maintaining overall stability while balancing flexibility and workspace.

This invention discloses an in-mold gate cutting device for logo injection molds, relating to the field of injection molding, and solves the problem of deformation and whitening at the shearing opening of symmetrical logo injection molds. The in-mold gate cutting device for logo injection molds includes a support frame, with a force-applying component mounted at the top of the support frame. This force-applying component cuts the logo injection mold. A positioning component is mounted on one side of the force-applying component, and the positioning component is aligned with a positioning template. The force-applying component includes a drive motor, a first clamping plate, and a second clamping plate. The drive motor drives the first and second clamping plates to move relative to each other in the horizontal direction through a transmission structure. The positioning component includes a first positioning template, a second positioning template, and a logo body. The first and second positioning templates are aligned to cut the logo body. In this invention, the force-applying component and the positioning component work together to apply force from both sides of the logo body, preventing the product from deflecting or shifting at the moment of cutting. After cutting, the product automatically falls from the opening.

The optical module disclosed herein includes a circuit board, a substrate, a laser, an optical modulation chip, and a fiber array. The substrate surface is prone to rusting; therefore, a protective layer can be formed on the substrate surface. A first connecting plate is provided between the substrate and the fiber array. A first thermosetting interface layer is formed between the bottom surface of the first connecting plate and the protective layer, and a first photocurable interface layer is formed between the top surface of the first connecting plate and the fiber array. The first thermosetting interface layer increases the interfacial bonding energy between the protective layer and the first connecting plate, thereby increasing the adhesion between the substrate and the first connecting plate. The first photocurable interface layer is formed by low-temperature curing, thereby preventing the fiber array from deforming due to high temperatures. The first photocurable interface layer has a low shrinkage rate, preventing the fiber array from deforming due to stress, thereby reducing the optical path offset of the fiber array. The bottom and top surfaces of the first connecting plate form different interface layers, satisfying both the adhesion between the connecting plate and the protective layer and ensuring that the fiber array has a low optical path offset.

The application discloses an ultrahigh molecular weight polyethylene-acrylonitrile butadiene rubber composite elastic material, which comprises 70wt%-95wt% of ultrahigh molecular weight polyethylene and 5wt%-30wt% of acrylonitrile butadiene rubber powder, has an island-sea structure, wherein the acrylonitrile butadiene rubber powder is a dispersed phase, the ultrahigh molecular weight polyethylene is a continuous phase, and the dispersed phase and the continuous phase are connected by C-C chemical bonds; and the particle size of the acrylonitrile butadiene rubber powder is less than or equal to 0.7mm. By limiting the content of the ultrahigh molecular weight polyethylene and the acrylonitrile butadiene rubber powder, combining the connection between the two phases by C-C chemical bonds and limiting the particle size of the acrylonitrile butadiene rubber powder, the rubber particles in the composite elastic material are first deformed when the composite elastic material is subjected to external force, so that the composite elastic material has good resilience and lower permanent deformation at a smaller strain.

This utility model discloses an automatic weighing and pensing device for livestock and veterinary use, comprising: a pensing frame with cleaning openings on the lower part of its two side surfaces; an electronic platform scale installed inside the lower end of the pensing frame; a weighing instrument installed at the center of one end of the pensing frame; a zeroing button installed on the vertical frame at one end of the pensing frame; a pensing ramp installed at one end of the pensing frame, with guardrails installed at both ends of its upper surface, one of which has an input panel installed; and a retractable gate mechanism located at the four corners inside the pensing frame. This utility model utilizes the retractable gate mechanism to avoid touching livestock and causing stress, while optimizing space design and reducing the occupied area. Furthermore, the automatic zeroing of the weighing when the gate is opened effectively ensures weighing accuracy and reduces errors. The input panel allows for the associated storage of weighing data for refined livestock management.

The utility model relates to the technical field of underwear mould cup, specifically disclose a high underwear mould cup of close degree, including underwear mould cup main part, the inside of underwear mould cup main part is provided with core support area, and is located underwear mould cup main part's lower edge and side edge area, the inside of underwear mould cup main part is provided with flexible close area, and is located underwear mould cup main part's center and upper edge area, the inside of flexible close area is provided with honeycomb gap structure, this honeycomb gap structure non - through underwear mould cup main part's inside and outside surface The utility model through setting up inside non - through honeycomb gap structure, make flexible close area possess local deformation ability, can fill the chest curve gap closely when static wearing, dynamic activity time self -adaptation deformation reduces displacement, simultaneously, the density / thickness difference of core support area and flexible area realizes the accurate distribution of supporting force and close nature, significantly improves the overall close degree and stability.

This invention discloses a low-floor all-aluminum vehicle chassis, consisting of a front axle, a central battery compartment, and a rear axle module connected sequentially. The central section is low, while the sides are higher, with a height difference of 240–250 mm. The load-bearing frame of the central battery compartment connects the crossbeams and longitudinal beams via mortise and tenon joints, forming a grid-like inner frame and three battery compartments, upon which the floor is mounted. The front and rear axle modules are connected to the frame and crossbeams via mortise and tenon joints, supplemented by mechanical reinforcement. This invention employs a three-segment all-aluminum height-difference structure, achieving lightweight, high rigidity, and high battery capacity synergistically for a 6-meter-class Class I low-floor minibus. The grid-like inner frame formed by the central grid-like mortise and tenon joints enhances rigidity and optimizes force transmission, while also forming three battery compartments, increasing battery capacity from 71 kWh to 105 kWh, significantly extending range. The all-aluminum design reduces weight by over 1 / 3, lowering energy consumption. The modular design improves assembly precision and efficiency, overcoming the technical bottleneck of adapting all-aluminum structures to Class I low-floor designs, providing an accessible, low-carbon, and highly reliable microbus chassis solution.

This invention discloses a screw fracture prevention method based on vibration testing of wall-mounted products, comprising: selecting screws that meet predetermined standards; using an accelerometer to monitor the vibration value at the installation point of the wall-mounted equipment in real time; adjusting the input control of the test bench; conducting a pre-test before the formal test, and then tightening the screws a second time after the pre-test; during the formal test, monitoring the root mean square value of acceleration or the peak value of the time-domain signal at the equipment installation point in real time, judging the screw fracture risk based on the root mean square value of acceleration or the peak value of the time-domain signal, and terminating the test when a fracture risk is detected. By adjusting the input control of the test bench, the vibration input level is controlled to prevent overtesting, reducing the risk of screw fracture due to vibration overload from the source. Pre-testing and secondary tightening eliminate preload loss, reduce the risk of stress concentration, and improve the uniformity and stability of preload. This achieves early warning of fracture risk, gaining time for downtime and loss mitigation.