230results about How to "Reduce stress levels" patented technology

The invention belongs to the field of wind power generation, in particular to a damping composite type variable rigidity vibration attenuating support for a gearbox of a wind powered generator. The support mainly comprises an upper yoke (1), a lower yoke (3), four hollow vertical columns (2), an upper elastic body (4), a lower elastic body (4), an upper base (5) and a lower base (5), wherein the upper yoke (1), the lower yoke (3) and the four hollow vertical columns (2) form a combined type main frame of the vibration attenuating support; a viscoelastic damping vibration attenuating layer (11) is compounded on the main frame; after being respectively combined with the upper base (5) and the lower base (5), the upper elastic body (4) and the lower elastic body (4) are respectively fixed on the upper yoke (1) and the lower yoke (3); the vibration attenuating support is connected to the main machine frame (6), and a gearbox torque arm (9) is arranged between the upper elastic body and the lower elastic body. The invention has the characteristics of light dead weight and low cost, the rigidity of the vibration attenuating support can form a non-linear change along with the increase of loads, and the vibration attenuating support has damping attenuation capability and further reduces the transfer of the vibration and the noise of a system to a lower foundation.

The invention discloses a steel-fiber concrete combined bridge deck structure with reinforced joints. The steel-fiber concrete combined bridge deck structure is mainly formed by assembling a plurality of steel plate-fiber concrete combined components, each component comprises a steel bridge deck plate and a prefabricated fiber concrete element cast on the steel bridge deck plate, reinforced joint structures are arranged in butt joint regions of two adjacent components and comprise cast-in-situ concrete elements and steel plate reinforcing components, the steel plate reinforcing components are covered by prefabricated fiber concrete elements and cast-in-situ fiber concrete elements, the steel plate reinforcing components and the prefabricated concrete elements are connected in a tongue-and-groove engaging mode for forming an integral fiber concrete layer, and the adjacent steel bridge deck plates are welded into an integral steel bridge deck plate layer. A construction method provided by the invention comprises the following steps that the steel-fiber concrete combined components are firstly manufactured, then, the combination and split joint is carried out, and next, the repeated sequential assembly is carried out. The steel-fiber concrete combined bridge deck structure and the construction method have the advantages that the tensile strength and the rigidity of local parts of the combined bridge deck structure can be improved, the joint seam stress is reduced, and the generation of cracks of paving layers is prevented.

The invention discloses a semiconductor packaging method of wafer level silicon-based through hole, belonging to the field of semiconductor packaging. The packaging method substantially comprises the following steps: 1, making a cavity structure on a cover plate; 2, bonding the front surface of the cover plate with the front surface of a wafer through a bonding machine; 3, grinding the rear surface of the wafer by a grinder, and implementing a stress plasma etching on the rear surface of the wafer; 4, removing all silicon belonging to a scribe line region starting from the rear surface of the wafer; 5, etching the rear surface of the wafer in order to form silicon through holes, and exposing a bonding pad; 6, making passivation layers, metal layers and solder mask layers sequentially in the rear surface of the wafer and the silicon through holes, so as to compose a redistributed circuit layer, thereby conducting the solder pad to a designated solder ball position on the rear surface of the wafer; 7, making solder balls and cutting along the scribe line. By the implementation of the semiconductor packaging method of wafer level silicon-based through hole, the yield rate of wafer cutting technique is increased, the stress level in package structure is reduced, and the boundary dimension of the package structure is decreased.

A method for forming shallow groove isolation in semi-conductor device comprises that: a mask film layer is formed on the underlayer of the semi-conductor; the mask film layer is made into a design to expose the underlayer of semi-conductor opposite to the position of the groove; the underlayer is corroded to form a groove and a padding oxidizing layer in the groove; a first insulating medium and a second insulating medium are deposited in turn until the groove is filled fully; a quick flash annealing process is carried out onto the underlayer of the semi-conductor; the insulating mediums are made flat to form a shallow groove isolation structure. The shallow groove isolation structure of the invention comprises the underlayer of the semi-conductor and the grooved formed in the underlayer. The groove is filled with insulating mediums, comprising the first insulating medium and the second insulating medium. The first insulating medium and the second insulating medium are piled against each other, forming a stack structure. The invention effectively controls the stress of the shallow groove isolation structure, thus improving the properties of semi-conductor devices.

The invention discloses a fibrous-composite-wound pressure container with a thin-walled metal lining and a manufacturing process thereof. The pressure container is characterized in that a lining barrel body section is of a thin-walled metal tube structure, and the wall face of the lining barrel body section is corrugated; the pressure container further comprises an elastic material filling layer wrapped outside the lining barrel body section; a fibrous composite winding layer is wrapped outside the elastic material filling layer and a lining end closure section. The manufacturing process of the pressure container includes the steps of S1, manufacturing the lining through a thin-walled metal material, S2, wrapping elastic materials outside the lining barrel body section and S3, winding fibrous composites varnished in resin on the outer surface of the elastic material filling layer in a layered mode and carrying out curing molding. According to the pressure container and the manufacturing process thereof, the lining, the fibrous composite winding layer and the adjacent layers are not prone to debonding or failures.

The invention discloses a bed-parallel drilling slot pressure relief permeability increase method which includes the steps: (1) performing construction on bed-parallel gas extraction drilling by the aid of a high-pressure hydraulic slotting device to form a drilled hole according to bed-parallel gas extraction drilling design requirements; (2) leading high-pressure water into the high-pressure hydraulic slotting device without withdrawing a drill to rotatably and circumferentially cut coal to form a disc-shaped slot; (3) withdrawing the drill after the disc-shaped slot is formed, and radiallycutting the coal without rotating a drill bit and a drill rod to form a radial slot; (4) repeating the step (2) and the step (3), and forming a plurality of disc-shaped slots and a plurality of radialslots in the same drilled hole; (5) repeating the step (1) to the step (4), and performing drilling and slotting on the other bed-parallel drilled holes. According to the method, horizontal and vertical stress of a coal layer is reduced, drilling gas extraction concentration and flow is improved, the bed-parallel drilling number of a working surface is decreased, and the method is simple and convenient to operate.

The invention discloses a flat specimen high-temperature tension-compression fatigue test clamp and method. The clamp and method implement clamping on the flat specimen in a high-temperature test, so that the flat specimen can be subjected to the tension-compression test under high-temperature conditions. A fatigue machine hydraulic clamping head clamps an optical rod end of a central shaft and is connected with a connecting rod through a sleeve, and the central shaft is provided with a fixing nut which is used for restricting the downward displacement of the sleeve; the connecting rod is fixed with the sleeve through a screw; the connecting rod is connected with a wedge clamp body through threads; the central shaft penetrates through a through hole in the middle of the connecting rod, and the shaft end is connected with a guide table; the guide table is positioned in a groove between two wedge clamping bodies, and used for guiding the wedge clamping blocks to move up and down; the specimen is clamped by the wedge clamping blocks in the wedge clamp body, the bottoms of the wedge clamping blocks are abutted by the top end of the guide table, and both ends contact the wedge surface inside the wedge clamp body so as to restrict the upward displacement of the clamping blocks; and the top ends of locking threads extending from threaded holes on both sides of the wedge clamp body contact the square clamping blocks, so that the square clamping blocks abut against both sides of the clamp blocks, thereby restricting the downward displacement of the wedge clamping blocks.

The invention discloses a preparation method of a wide-forbidden-band semiconductor flexible substrate, in particular to a preparation method of a GaN, AlN and SiC monocrystal flexible substrate, belonging to the technical field of microelectronics. The theory of the flexible substrate is introduced into the preparation process of a wide-forbidden-band semiconductor homoepitaxial substrate, the flexible substrate consists of a wide-forbidden-band semiconductor flexible function layer and a supporting substrate, and the thickness of the flexible function layer is 20-50nm. By using the flexible substrate, the defect density and the stress level of epitaxial materials are reduced and the crystal quality of the epitaxial materials is greatly improved; and the wide-forbidden-band semiconductor flexible substrate prepared by adopting the method has the advantages of large size and easiness in industrialization.

The invention discloses a fabricated combined bridge deck structure provided with a grid type connector and a construction method thereof. The combined bridge deck structure is formed by assembling at least two steel plate-fiber concrete combined type components. Each steel plate-fiber concrete combined type component comprises a steel bridge deck slab located on the lower portion and prefabricated fiber concrete pieces poured on the steel bridge deck slab. One grid type connector is arranged in the butt joint area of every two adjacent steel plate-fiber concrete combined type components. The grid type connector comprises cast-in-place fiber concrete pieces and grid reinforcement components fixedly connected to the corresponding steel bridge deck. The grid reinforcement components is completely covered with the prefabricated fiber concrete pieces located on the two sides of the butt joint area and the cast-in-place fiber concrete pieces located in the butt joint area. The prefabricated fiber concrete pieces and the cast-in-place fiber concrete pieces are connected through the grid reinforcement components, so that an integrated fiber concrete layer is formed. The two adjacent steel bridge deck slabs are fixedly connected to form an integrated steel bridge deck slab layer.

The invention relates to a tire having a radial casing reinforcement, consisting of at least one layer of metal reinforcement elements, said tire including a top reinforcement (5), itself radially covered with a tread (6), said tread being joined to two beads (3) via two sidewalls. According to the invention, the metal reinforcement elements of at least one layer of the casing reinforcement (2) are non-reinforced cables having, in the so-called perviousness test, a displacement of less than 20 cm3 / mn, and in a radial plane, at least on a portion of the meridional profile of the tire, the rubber mixture thickness (E) between the inner surface of the tire cavity and the point of a metal reinforcement element of the casing reinforcement nearest to said inner surface of the cavity is less than or equal to 3.5 mm, and the rubber mixture thickness ratio between the inner surface of the tire cavity and the point of a metal reinforcement element of the casing reinforcement nearest said inner surface of the cavity of two separate portions of the tire is greater than 1.15.

The invention discloses a flexible connector arranged between ultra-large offshore floating platform modules and a butt joint method. The flexible connector comprises a slide column, a supporting seat, spring steel plates, slide blocks and a fixing seat; the front end of the slide column is provided with a hinge head, the supporting seat is connected to the rear end of the slide column, the springsteel plates are vertically connected to the supporting seat in pairs, and the slide blocks are connected to the two ends of the spring steel plates; the outer wall of the slide column is sleeved with a slide sleeve, the slide sleeve is closely sleeved with a rubber sleeve, and the rubber sleeve is embedded in a through hole formed in the fixing seat; the flexible connector is installed in an inner cavity of the platform module through the fixing seat, and the slide blocks make contact with the top surface and the bottom surface of the inner cavity of the platform module; the adjacent platform modules are connected through a hinge joint and a pin shaft of the flexible connector, and the slide column drives the slide blocks to move when moves along the slide sleeve. When transverse or vertical shearing force is applied to the hinge joint, the rubber sleeve is extruded to be deformed, and the transverse rigidity and the vertical rigidity of the connector are ensured. When the hinge joint is stretched or compressed, small rigidity in the longitudinal direction is achieved through the spring steel plates, and the stability of a floating body is ensured while the load of the connectoris decreased.

The invention relates to a strengthening method for an armoured concrete slab. In the method, a permanent mechanical anchor device is adopted to install a cable in a pulled area of a strengthened armoured concrete slab; after anchoring, the strengthened armoured concrete slab is used as a counter-force device to transversely stretch the cable, apply prestress to the cable and fix the cable, and polymer mortar is coated to cover the whole anchor device and the cable. The method has the advantages that the cable is in a tensioning state, is solid and firm after being subjected to stretching and prestress by the easy permanent mechanical anchoring without any auxiliary anchoring components and complex structures; a transverse stretching method is adopted to apply prestress to the cable, thereby not only overcoming the problem of lagged stress of high-strength materials but also being convenient to realize in the strengthening site and achieving the advantages of simple and convenient operation and low cost; the method has two-way prestress effect, thereby being particularly suitable for a condition that longitudinal crack occurs to a prestress cored slab in a strengthening bridge structure, and effectively solving the problem of longitudinal crack strengthening of the prestress cored slab in bridge engineering.

Provided is an bainite austempering process of GCr15 steel bearing rings, which firstly heats GCr15 steel bearing rings to the temperature of 870 DEG C, then the GCr15 steel bearing rings are placed in the 50% KNO3+50%NaNo2 nitrate solution to be isothermal and is taken out after four hours of isothermal time. The bearing rings treated by the technology have high tenacity and long fatigue life. In particular, the service life of the working bearings under heavy load and impulse can be prolonged and the operation reliability of the bearings can be increased.

The invention provides a storage box with a large-concentrated-force integrated diffusion structure. The storage box comprises a wave distribution radial short shell, a reinforced bending-resistant Y-shaped ring and a triangular grid radial barrel segment. The middle of a wave-shaped base of the wave distribution radial short shell is a wave-shaped structure with the middle being sunken and the two sides being protruded, and the two sides of the wave-shaped base are conventional arc bases. Component force of all radial diagonal ribs in the action direction of the concentrated force is the same. Trapezoid transition ring ribs are located on transition regions of the radial diagonal ribs and uniform grids, and the uniform grids are located on the two sides of a radial rib region. The outer surface of the reinforced bending-resistant Y-shaped ring is provided with a plurality of reinforced grids, and the inner surface of the Y-shaped ring is additionally provided with an arc bending-resistant groove. The triangular grid radial barrel segment is formed by welding four identical radial triangular grid wall plates. By means of the storage box, pressure stress on a concentrated load action line can be effectively lowered, and influences of the concentrated load on an internal pressure thin wall oxygen tank are weakened through matching and coordination of all structures and step-by-step diffusion.

The invention discloses a design method of shape optimization of a tee, which is carried out according to the following steps: first, a finite element analysis model and a corresponding mathematical expression of static structural analysis are built, then the displacement vector, strain vector and stress vector of a node are calculated; the total correction value and the component at the normal direction at the node are calculated; according to the determined total correction value and the component at the normal direction at the node, the node coordinate is corrected; the structure after correction is carried out stress calculation and test. The design method of shape optimization corrects the existing tee structure design, bases on finite element model, moves a high stress node along the direction of the outer normal on the structure surface by proportion, moves a low stress node along the opposite direction of the outer normal on the structure surface by proportion, and finally obtains a tee structure with a more suitable geometric shape and effective reduction of structure stress concentration.

The invention discloses a tuned mass damper for controlling vertical high-frequency vibration of floor slabs and a manufacturing method thereof. The tuned mass damper mainly comprises a gantry rigid frame, a weight and damping units; the gantry rigid frame is composed of pillars and a horizontal steel beam; the weight fixed on the horizontal steel beam is driven by vertical bending deformation of the horizontal steel beam to linearly reciprocate in the vertical direction; the weight is in a variable section form, thus the weight is centrally stressed on the horizontal steel beam, and height of the weight is reduced; eddy current damping units are used as damping elements, including two sets, used to keep balanced lateral stress; the whole damper is mounted inside a floor slab through a bottom steel plate, and partial rigidity of the floor slab is enhanced by the bottom steel plate. The tuned mass damper and the manufacturing method thereof have the advantages that high frequency required by the tuned massage damper for use in damping vertical vibration of floor slabs of industrial workshops is achieved, height of the damper is effectively reduced, and embedding the damper into the floor slab is facilitated.

The invention provides a strength theory based welding design method, and belongs to the technical field of welding. The welding design method comprises steps as follows: (1), actual measurement; (2), CAE (computer-aided engineering) analysis on a welding simulation part; (3) CAE analysis on a whole welding workpiece; and (4), improvement of an established welding method for a corresponding welding seam to reduce the maximum stress sigma max till the minimum safety factor N of the welding seam falls into the corresponding safety factor range of the welding seam. The welding design method can pointedly reduce stress levels of some welding seams and improve the safety factor, so that the welding debugging process is simple, and load-carrying property of the welding seams are effectively and integrally improved.

The invention discloses a thickness optimization design method for thermal barrier coatings (TBCs) of a turbine blade, and belongs to the technical field of surface coating protection. Representative nodes uniformly distributed on the turbine blade are selected, the states of local regions are reflected by temperatures and stress results of representative node positions, and TBCs thickness analysis of a complex blade is equivalent to thickness optimization design of a finite number of representative node positions, so that the analysis calculation amount is reduced; a mathematic formula is established for reflecting design objectives of high heat insulation performance, low stress level and low preparation cost, calculation is performed by introducing a multi-objective optimization algorithm to obtain optimal ceramic layer thickness of each representative node position, and a total objective function value is taken as a TBCs thickness optimization design and evaluation parameter of the blade, so that the advantages and disadvantages of a TBCs thickness distribution scheme can be quantitatively evaluated and the shortcoming that an existing method only can perform qualitative evaluation is overcome; and the method can ensure the service safety of the coatings and improve the usage efficiency of the coatings.

The invention relates to a tenon connection structure design method for a turbine rotor of a long-service-life small turbofan engine, and relates to the technical field of turbofan engines. Accordingto the tenon connection structure design method for a turbine rotor of a long-service-life small turbofan engine, in order to reduce the average load of tenon teeth, a four-pair-tooth structure is adopted, the area of a tenon and mortise working face bearing face is increased, the bottom of a mortise is changed into large fillet transition, mortise stress concentration is reduced, the stress levelof a key position is effectively reduced, and the bearing capacity of the tenon and mortise is effectively improved. And through the optimal design of the characteristic size of the tenon connectionstructure, the stress concentration of the key positions of the tenon and mortise strength is reduced, the stress level of the key positions is further reduced, and the bearing capacity of the structure is improved.

The invention relates to a processing technology of a slice medium, especially to a detection apparatus for detecting thickness of a slice type valuable document in a financial self-service device. The detection apparatus comprises a module frame, a driving shaft, at least one driven wheel assembly, and an inductor. The module frame is used for installing and carrying parts. The two ends of the driving shaft are installed on the module frame by a bearing. The driven wheel assembly contains a driven wheel and an elastic support; one end of the elastic support is fixedly installed on the module frame and the driven wheel is assembled to the other end in a rotating mode to form a free end; an arc spring plate is arranged at the module frame by corresponding to the driven wheel assembly; the part, opposite to the driven wheel, of the free end of the elastic support is in contact with the arc spring plate for assembling; and a detection block is fixedly installed at one side, opposite to the driven wheel, of the elastic support. The inductor is fixedly installed on the module frame by being opposite to the detection block and is used for detecting a displacement value of the detection block in a non-contact mode.

The invention provides a shaft-type part multi-arc chamfer designing method. The method comprises the steps that (1) a shaft-type part is provided, and three-dimensional drawing software is used for conducting three-dimensional CAD modeling on the shaft-type part; (2) multi-arc parametric modeling is conducted at the positions of two perpendicular edges at the shaft step position of a small-diameter section and the shaft step position of a large-diameter section. When the multi-arc chamfer designing method is applied to step chamfer structural design of a general industrial shaft-type part, the stress level at the position of a step chamfer of the shaft-type part is lowered; the service life of the shaft-type part is prolonged; the service efficiency of materials of the shaft-type part is improved.

The invention relates to a 66kV burst short circuit transformer. A three-phase three-limb iron core is arranged in a lower fuel-saving box of the transformer. The iron core is sleeved with a low-voltage coil and a high-voltage coil. Wires are led out from the head end of the high-voltage coil and the head end and tail end of the low-voltage coil in the axial direction, and are led into a sleeve through cables. The high-voltage coil is of a fully continuous structure, wherein every two of three composite conductors are wound in parallel in the radial direction. A subsidiary pressing plate on the high voltage side and a subsidiary pressing plate on the low voltage side are respectively of a fan shape as a whole, and the fan-shaped subsidiary pressing plate on the high voltage side and the fan-shaped subsidiary pressing plate on the low voltage side share the same center of a circle and are placed in a symmetric mode. The subsidiary pressing plates and a pressing plate are provided with positioning holes and are connected through an insulating screw rod. According to the 66kV burst short circuit transformer, the insulation structures of the coils are optimized, ampere-turn balance of the coils is improved, horizontal eddy current loss of the coils is lowered on the premise that insulation reliability is guaranteed, the stress level of the coils is lowered substantially at the time of a short circuit, the capability in resistance to the short circuit of a product is enhanced, and a basis is provided for further optimization of a product design.

The invention discloses a brick wall reinforcing structure. The brick wall reinforcing structure is characterized in that rebar hoops are arranged at mortar joints of a brick wall, the rebar hoops in different rows are arranged in a staggered manner, rebars of the rebar hoops penetrate horizontal mortar joints of the brick wall to form a closed hoop, horizontal rebars are arranged on the surface of the brick wall, and after the horizontal rebars are fixed by anchoring ribs, sectional prestressed tensioning is performed on the horizontal rebars, length of sectional prestressed tensioning is equal to a distance between two adjacent rebar hoop in a same row, the horizontal rebars after being tensioned become broken-line rebars, and the broken-line rebars at positions with maximum tensioning length of adjacent rows are welded and fixed by adopting rebar braces, the rebar braces are welded with the anchoring ribs reserved in the brick wall, diameter of the anchoring ribs is 8-10 mm, and the anchoring ribs extend into reserved holes in the brick wall; plastering is performed after prestressed tensioning is completed to form a protecting layer, thickness of a cement mortar surface layer is 25-30 mm, and a rebar net is hung on the outer sides of the broken-line rebars.

The invention discloses an actuator cylinder support structure. The actuator cylinder support structure is fastened to an installing base of a fore exerting cylinder and used for being connected withan actuator cylinder. The actuator cylinder support structure comprises a concave opening portion, an installing base comprises a convex portion, and the concave opening portion is in interference fitwith the convex portion; and in addition, the actuator cylinder support structure comprises an X-shaped pulling rod, and the X-shaped pulling rod is used for dispersing and transmitting loads exertedby the actuator cylinder to the fore exerting cylinder. According to the actuator cylinder support structure, the stress level of an actuator cylinder support and the fore exerting cylinder can be significantly reduced.

A system for generating and matching profiles of people for ride sharing comprises a processor to process physiological data of users collected by sensors in the vehicles, driving data collected by sensors in the vehicles, and lifestyle data of the users. The processor generates user profiles based on the physiological, driving, and lifestyle data. The user profiles include correlations between the data and stress levels of the users during the use of the vehicles. A network interface receives the physiological, driving, and lifestyle data from the vehicles; receives a request from a first user to share a ride in a vehicle; receives information from the processor about a second user having a user profile compatible to the first user; and sends a response to the first user including the information about the second user to allow the first user to share the ride in the vehicle with the second user.

The invention provides a semisubmersible supporting platform. The semisubmersible supporting platform comprises a lower floating body, stand columns supported on the lower floating body, and a deck box supported by the stand columns, wherein an utility area module is arranged on the deck box, and is supported above a main deck of the deck box through supports; and a height interval is formed between the bottom of the utility area module and the main deck of the deck box. According to the semisubmersible supporting platform disclosed by the invention, the whole main deck of the semisubmersible supporting platform can be used for storing goods, so that the effective goods storing area of the deck is increased; the supporting capacity of the platform is high, so that the supply cycle of a supply ship can be reduced, and the cost is reduced; and a connecting manner of the utility area module and the deck box adopts support connection, so that the load effect of the deforming of the deck box to the utility area module is directly released, the stress condition of the utility area module is changed, especially, the fatigue strength performance of a joint structure of the utility area and the deck box is improved, and the reliability of the structure is improved.

The invention relates to a thermal barrier coating with a composite double-ceramic-layer structure and a preparation method thereof, and belongs to the technical field of thermal barrier coating preparation. The thermal barrier coating sequentially comprises a thermal barrier coating bonding layer, a YSZ ceramic layer and a composite ceramic layer from a base body to the top; the composite ceramic layer is composed of a high-toughness ceramic material and a high-rare-earth-content doped zirconium oxide material according to the volume ratio of (1 to 4): (4 to 1); the high-toughness ceramic material is a ceramic material with the fracture toughness being greater than 5MPa. M < 1 / 2 >; and in the high-rare-earth-content doped zirconium oxide material, the sum of the mole fractions of the doped rare earth elements is 16 percent to 30 percent. According to the thermal barrier coating, the thermal barrier coating bonding layer, the YSZ ceramic layer and the composite ceramic layer are sequentially prepared from the base body to the top through a spraying method. The thermal barrier coating can be prevented from cracking in the thermal cycle process, and the service life is long; and cracks are uniformly distributed, the anti-stripping capability is high, and the heat insulation performance is high.

The invention discloses a high temperature tensile fatigue test fixture for a panel test piece and a method. The clamping for the panel test piece in a high temperature test is realized, so that the tensile fatigue test for the panel test piece can be performed under a high temperature condition. A hydraulic chuck of a fatigue machine is used for clamping an optical rod end of a central shaft and is connected with a connecting rod through a sleeve; a fixing nut is arranged on the central shaft; the fixing nut is used for limiting the downward movement of the sleeve; the connecting rod is fixed with the sleeve through a screw; the connecting rod is in threaded connection with a wedge-shaped chuck body; the central shaft passes through a through hole in the middle of the connecting rod; a shaft end is connected with a guiding platform; the guiding platform is located in a groove between two wedge-shaped clamp blocks and is used for guiding the wedge-shaped clamp blocks to move up and down; the test piece is clamped by the wedge-shaped clamp blocks in the wedge-shaped chuck body; the bottoms of the wedge-shaped clamp blocks are propped by the top end of the guiding platform; the two sides are in contact with the wedge-shaped plane in the wedge-shaped chuck body; the upwards movement of the wedge-shaped clamp blocks is limited. The high temperature tensile fatigue test fixture can meet the requirement for stably clamping the panel test pieces in various sizes and can realize the single-shaft tensile fatigue under the high temperature condition.