21results about How to "Improve stress" patented technology

The application relates to the technical field of zirconium-niobium alloy material processing, in particular to a preparation method of a large-diameter zirconium-niobium alloy pipe for nuclear industry, which comprises the following steps: S1, mixing nuclear-grade sponge zirconium and niobium scraps, or mixing zirconium-niobium alloy, zirconium dioxide and iron; melting the mixture and preparing a zirconium-niobium alloy ingot; S2, sequentially performing large deformation forging in a beta single-phase zone and an alpha+beta two-phase zone; S3, drilling a central hole in the axial direction of a round-forging blank; quenching in the beta single-phase zone; S4, coating an anti-galling agent on the surface of the central hole and heating to prepare a pipe blank in the mode of cross piercing; S5, performing periodic forging and rolling on the pipe blank; S6, annealing the hot-rolled pipe twice; and straightening the hot-rolled pipe after the second-stage annealing. The zirconium-niobium alloy pipe has uniform microstructure, good mechanical properties and corrosion resistance, the production direction of the brittle hydride is nearly parallel to the circumferential direction of the pipe, and brittle damage of the pipe wall thickness caused by the crack propagation of the hydride is avoided.

This utility model provides a windshield screen for rail vehicles, which reduces the gap between the screen and the seat by connecting to the seat. The connection position can be flexibly adjusted during installation, facilitating installation. Its structure includes a windshield screen body and handrails. One end of the handrail is connected to the vehicle body, and the other end is fixedly connected to the windshield screen body. The windshield screen body is fixedly connected to the bottom and side of the seat via connectors. The handrail is connected to the vehicle body via an adjustable connection structure, which includes a handrail connecting seat and a vehicle body connecting seat. The handrail connecting seat has an oblong hole extending along the axis of the corresponding position of the handrail. One end of the vehicle body connecting seat is fixedly connected to the vehicle body, and the other end can be bolted to the oblong hole after the handrail and windshield screen body are in place.

A toilet blank and a toilet bowl are disclosed, comprising a side blank, a main blank, and a connecting blank for the side blank and the main blank; the blank also includes several ribs, each with its two ends connected to the inner wall of the side blank and the first end of the connecting blank, and each rib extending from one side of the inner wall of the side blank to the other side along the first end of the connecting blank. Therefore, during the drying and firing process of the toilet blank, the frictional force and shrinkage force between the blank and the support plate are distributed on the ribs, resulting in stress concentration on the ribs, thereby reducing the forces acting on other parts of the blank, improving the stress condition of the toilet blank during drying and firing, reducing the possibility of blank cracking, and thus lowering production costs.

This utility model discloses a front axle braking assembly, comprising a steering knuckle, a chamber bracket, a chamber, an adjusting arm, a camshaft, a camshaft bracket, and a brake. The chamber bracket, camshaft bracket, and brake are fixed on the steering knuckle, and the chamber is mounted on the chamber bracket. The camshaft is mounted on the camshaft bracket. The adjusting arm comprises a housing, a worm gear, a turbine, and an adjusting mechanism. The housing of the adjusting arm is connected to the chamber, and the turbine of the adjusting arm is connected to the camshaft. Its key feature is that the housing of the adjusting arm has an asymmetrical structure. Through the application of this asymmetrical design, the performance of the adjusting arm is enhanced without affecting the clearance between the adjusting arm and the chamber bracket. The reinforcement of the housing, worm gear, and turbine significantly improves the safety factor of the adjusting arm, ensuring the stable and reliable braking of the entire front axle throughout its entire lifespan.

The application discloses a frame plate, a processing method of a chip packaging structure and a chip electroplating structure. The frame plate has a packaging main body matching part and a side rib matching part. The side rib matching part is used for matching with a packaging body with a reserved side rib and is used for supporting and limiting the side rib. Compared with the prior art, the frame plate of the application is additionally provided with the side rib matching part. The side rib matching part can match with the packaging body with the reserved side rib, and a stable supporting structure is formed between the side rib matching part and the side rib of the packaging body. When processing, the stress condition of the packaging body is better, and the workability can be effectively improved.

This utility model discloses a forklift mast and forklift, including a mast body and a fork carriage. A plurality of first roller groups are provided between the fork carriage and the mast body for relative sliding in a vertical direction. These first roller groups are arranged side-by-side along the left-right direction of the fork carriage. Each first roller group includes multiple rollers disposed on the same side of the fork carriage and distributed vertically. The multiple rollers also include at least two second main rollers located between the first upper main roller and the first lower main roller. Furthermore, the multiple rollers also include at least one second side roller located between the first upper side roller and the first lower side roller. By increasing the number of rollers, this utility model improves the stress distribution on the rollers, thereby reducing the risk of roller failure due to overload and enhancing the overall stability between the fork carriage and the mast body.

The present application relates to the technical field of cylindrical structure transportation shape preserving, more specifically, the present application relates to a kind of shape preserving device, comprising: support piece;First plate body is connected to support piece;Second plate body is connected to support piece, is sleeved in first plate body, wherein, first plate body and second plate body form and place space between, and the part is placed in place space;Operation port is opened in the corresponding position of first plate body and second plate body, for welding equipment welding part is passed into.Such setting, before welding operation, part can always keep shape, need not to be calibrated, improve part production efficiency, reduce labor cost and time cost.

The application discloses a kind of high-strength composite pipe manufacturing method, it is related to composite pipe production technical field, including the following steps: S1, inner ring welding: through front end winding welding seat to inner ring reinforcing warp is arranged guidance, and through spark to inner ring spiral weft is welded to inner ring reinforcing warp outside, to complete the preliminary forming of the structure of composite pipe inner ring, and through center guide horizontal axis to the structure after preliminary forming is guided, S2, mesh belt winding: through middle layer mesh belt winding welding seat with middle layer steel wire mesh belt is covered to inner ring spiral weft outside, and through spark to middle layer steel wire mesh belt is welded to inner ring spiral weft outside, the stability of production equipment operation is improved, and effectively improve the convenience of mesh belt storage roller replacement adjustment, and the tubular product that is formed by warp steel wire and inner and outer weft steel wire is continuously welded into net-like framework, and is once co-extrusion composite with polyethylene plastic, steel-plastic three-dimensional interpenetration, each other inlay and jointly bear work load.

The invention relates to the technical field of hoisting and transporting equipment, and particularly discloses a bridge crane trolley frame structure which comprises a frame, and an adjusting assembly is arranged below the frame; the frame is formed by splicing a plurality of supporting columns, a first supporting plate is jointly fixed to the tops of the supporting columns, and wheels are installed at the bottoms of the supporting columns located on the same side of the frame. The frame is a rectangular frame, and the four lifting assemblies are arranged at the midpoint positions of the four edges of the frame correspondingly. The lifting assembly comprises a U-shaped supporting seat, and the bottom of the supporting seat is connected with the supporting column in a sliding mode. A winding drum is rotationally connected between the inner walls of the supporting seats, and a first steel wire rope is wound around the winding drum. A first mounting groove is formed in the side, away from the frame, of the supporting seat in the length direction, two first guide wheels are symmetrically arranged in the first mounting groove, and the side wall of one side of each first guide wheel is rotationally connected with the inner wall of the first mounting groove; the problem that a traditional bridge crane is low in lifting stability and safety is solved.

The backrest curvature adjusting device comprises a stress base layer, an air bag, an air pump, an electric control valve, a curvature adjustable plate and a pressure measuring module. The stress base layer and the curvature adjustable plate are arranged side by side, and the multiple air bags are located between the stress base layer and the curvature adjustable plate; the air outlet end of the air pump is connected with the air bags through a plurality of pipelines, and electric control valves are installed on the pipelines. A plurality of pressure measuring modules corresponding to the back of the human body are installed on the side, back to the air bag, of the curvature adjustable plate. The curvature of the curvature adjustable plate can be adjusted by controlling the inflation states of different air bags, and the supporting force of different positions on the spine of the back of the human body is adjusted; the pressure measuring module is installed on the side, opposite to the air bag, of the curvature adjustable plate, accurate detection can be achieved, it is guaranteed that the pressure between the curvature adjustable plate and the back of the body is within the set value range, and the stress condition of the spine is effectively improved.

The low-temperature and high-pressure double-layer hydrogen storage bottle comprises an inner container, a bottle opening pipe is arranged at one end of the inner container in the axial direction of the hydrogen storage bottle, and an inner valve seat is arranged at the other end of the inner container; the heat insulation layer is arranged on the outer wall of the inner container; the outer container is provided with a through hole, the outer wall face of the bottle opening pipe is fixedly connected with the through hole, the outer container is provided with an outer valve seat corresponding to the inner valve seat, the outer container is formed in a segmented mode in the axial direction, and a vacuum layer is formed between the inner container and the outer container; one end of the connecting rod is connected with the inner valve seat, the other end of the connecting rod is connected with the outer valve seat, and the relative positions of the inner container and the outer container in the radial direction of the hydrogen storage bottle are fixed; the inner supporting frame is located in the vacuum layer, one axial end of the inner supporting frame is fixedly connected with the bottle opening pipe, the other axial end of the inner supporting frame is provided with a connecting ring, and the connecting ring is located on the periphery of the connecting rod and fixedly connected with the inner wall face of the outer container; the inner valve seat and the connecting ring are elastically connected in the axial direction through the elastic piece, so that the stress condition of the outer container in the low-temperature material adding and discharging process of the hydrogen storage bottle is improved, and the functional stability and safety of the double-layer hydrogen storage bottle are guaranteed.

The utility model relates to glass processing field especially relates to a new type glass kiln horizontal agitator cooling water pipe hanging device, including wall, horizontal pass stand, fixed link, movable joint, connecting rod, iron fastener chain and arc buckle, one side of wall is equipped with horizontal pass stand, one side fixed link has in horizontal pass stand, the end of fixed link is connected with connecting rod through movable joint, both ends of connecting rod all hang and connect with iron fastener chain, the bottom end of iron fastener chain is equipped with the arc buckle for cooperating with cooling water pipe, this new type glass kiln horizontal agitator cooling water pipe hanging device, the device adopts arc buckle cooperation iron fastener chain to hang fixed water pipe, and each junction is free rotating movable structure, makes water pipe can follow horizontal agitator synchronous operation smoothly, greatly improves the stress condition of water pipe joint, effectively solved the service life problem of inlet and outlet water pipe.

The utility model provides a steel strand anchoring end structure which comprises an anchor rod and a tensioning sleeve, one end of the anchor rod is inserted into a rock stratum, the exposed end of the anchor rod is provided with a connecting plate, the connecting plate is provided with a swinging end capable of swinging, the swinging end is provided with a connecting rod part, a steel strand is provided with a steel strand clamping head, and the two ends of the tensioning sleeve are in threaded connection with the connecting rod part and the steel strand clamping head correspondingly. The connecting rod part and the steel strand clamping head are opposite in thread turning direction, a detachable hinge pin is arranged at the joint of the swing end and the connecting plate, and the problem that a short-period temporary engineering anchor rod connecting structure is not easy to disassemble and assemble is solved.

This invention discloses an integrated disassembly and ejection mechanism for tunnel boring machine (TBM) cutterheads, belonging to the technical field of tunnel excavation equipment. It includes a cutterhead holder, a cutterhead fixing mechanism, and a cutterhead ejection mechanism. The cutterhead holder is welded into the cutter box on the TBM cutterhead. The cutterhead fixing mechanism includes a screw, a movable wedge, and a cutterhead pad. The screw is rotatably mounted on the cutterhead and connected to the movable wedge via a thread. The cutterhead pad is fixedly mounted on the cutterhead. The cutterhead ejection mechanism includes a rack, a threaded gear shaft, and a cutterhead ejection block. The rack is fixedly mounted in the groove of the movable wedge. The threaded gear shaft is rotatably mounted on the cutterhead, and the rack meshes with a gear on the threaded gear shaft, which is connected to the cutterhead ejection block via a thread. Rotating the screw enables the linkage between the movable wedge and the cutterhead ejection block. The purpose of this invention is to provide an integrated disassembly and ejection mechanism for TBM cutterheads, addressing the problem of insufficient adaptability of existing mechanisms for robotic cutterhead changing.

This utility model discloses a rattan woven chair with strong bending resistance, relating to the field of rattan woven products. It includes a chair frame body, a rattan seat cushion fixedly connected to the frame body, armrests fixedly connected to both sides of the seat cushion, an adjustable support device slidably connected between the rear ends of the armrests, a rotating frame at the rear end of the seat cushion, and a rattan backrest rotatably connected to the frame. The backrest is located between the armrests and the adjustable support device. A sliding slider is provided on the side of the backrest, and a vertically downward support rod is hinged to the slider. The support rod is slidably connected to the adjustable support device. When in use, the backrest tilts under pressure. Under the action of the slider and the adjustable support device, the support rod moves downward synchronously, eventually contacting the ground to provide support. This improves the stress distribution on the rattan woven chair, effectively avoiding uneven stress distribution and enhancing its bending resistance.

This invention discloses a support column device for a formwork system and its construction and installation method. The support column device for the formwork system includes a combined guide seat, a support frame, a hydraulic cylinder bracket, a drive hydraulic cylinder, an upper reversing box, and a lower reversing box. The combined guide seat includes two oppositely arranged guide seats, each with a guide wheel mechanism and an installation notch. The installation notches of the two guide seats can be inserted into the limiting edges of the support frame from both sides to form a limiting structure. The construction and installation method includes first lifting the hydraulic cylinder bracket to a new working level, then removing the bottom combined guide seat, and then using the drive hydraulic cylinder to lift the support frame to a new working level. Using this invention facilitates the disassembly and installation of the guide seat and the support frame, and improves the lifting sequence between the support frame and the hydraulic cylinder bracket, thereby saving installation space and investment costs.

This utility model discloses a multi-angle mover for conveying equipment, comprising a main load-bearing component, a secondary load-bearing component, and a crowbar assembly. The secondary load-bearing component is detachably mounted from the main load-bearing component. A crowbar assembly is provided at the end of the main load-bearing component away from the secondary load-bearing component, and a crowbar assembly mirroring the crowbar assembly of the main load-bearing component is provided at the end of the secondary load-bearing component away from the main load-bearing component. This utility model also provides a mounting plate on the plane of the crossbar to install casters, which can directly solve the problem of angular turning of the conveying equipment. The directional wheels can prevent interference with the ground when the lever is under force.

This utility model discloses a housing and an air conditioner having the same, relating to the field of air conditioner technology. The housing has a first side and a second side, with a heat exchange air inlet on the second side. The housing is provided with mounting rails for installing a filter. Both the first side and the heat exchange air inlet extend along a first direction. At least three mounting rails are arranged at intervals along the first direction. The two outermost mounting rails are edge rails, and the remaining rails are middle rails. Each mounting rail includes a first section adjacent to the first side. The vertical distance between the first section of the edge rail and the first side is greater than the vertical distance between the first section of the middle rail and the first side. This housing improves the stress and deformation conditions on the filter, achieving dual protection for the heat exchanger.

The application provides a quantum bit electrode, a design method thereof and a quantum bit device. The design method comprises the following steps: growing a silicon-based quantum bit epitaxial structure through an epitaxy technology, and comprehensively characterizing a surface; designing a quantum bit electrode structure and shape which are optimized according to different materials; and further improving overall stress conditions of the quantum bit device, improving temperature variation and strain fluctuation of the quantum bit device through the shape and distribution of the quantum bit electrode, so as to obtain a brand-new quantum bit electrode structure. The silicon-based quantum bit device is prepared by using the optimized quantum bit electrode structure, so that a more stable quantum bit device unit array is provided for large-scale bit expansion, that is, the stress fluctuation of the quantum bit device is improved from a microscopic point of view, which has great significance for the manipulation of the quantum bit.

The utility model relates to a vehicle body structure and a vehicle. The vehicle body structure comprises a battery pack, a front cabin assembly, a rear floor assembly and two threshold beams. The front cabin assembly and the rear floor assembly are provided with two doorsill beams in the front-back direction of the vehicle body structure, the doorsill beams are connected to the front cabin assembly and the rear floor assembly, and the doorsill beams are located on the two sides of the front cabin assembly and the two sides of the rear floor assembly. The two sides, in the left-right direction of the vehicle body structure, of the battery pack are fixedly connected to the two threshold beams, and the two sides, in the front-back direction of the vehicle body structure, of the battery pack are fixedly connected to the front cabin assembly and the rear floor assembly. The utility model aims to solve the technical problems of low integration degree of an energy storage device and a vehicle body, more space waste and increase of the weight of the whole vehicle in the related technology.

The invention relates to the technical field of railway wagons, in particular to a shaft end power generation device contact structure and a preparation method thereof.The shaft end power generation device contact structure comprises a macromolecule wear-resisting contact, the end face of the macromolecule wear-resisting contact is a plane, a guide rod is connected to the lower portion of the macromolecule wear-resisting contact, and a spring is connected to the lower portion of the guide rod; and the spring and the lower part of the guide rod are sleeved in the U-shaped rod. The structure of the contact is optimized, the wear resistance of the contact is enhanced, the friction area is increased, the stress condition of the contact is improved, and the reliability of the contact is greatly improved.