2123 results about "Sliding contact" patented technology

The present invention mainly relates to the technical field of cable stripping. Disclosed are a cable stripping device and a stripping method. The cable stripping device comprises a sleeve and a first rotary disk, the first rotary disk being radially provided with several support rods, each support rod being rotatably connected to a roller in rolling contact with the side surface of a cable, and to a cutting blade used in cooperation with a cable sheath. The cable stripping device further comprises a second rotary disk, the second rotary disk being provided with arc-shaped grooves in sliding contact with the support rods. One end of the first rotary disk is provided with a center shaft rotatably connected to the sleeve, and protrusions are symmetrically provided at one end of the center shaft; a base is provided with an annular groove in a circumferential direction and a helical groove in communication with the annular groove; and the protrusions sequentially slide on the annular groove and the helical groove, thus respectively driving the cutting blades to move on the surface of the cable in a circumferential direction and helically in an axis direction. The beneficial effects of the present invention lie in: solving the problem of inconvenient stripping in existing stripping devices, and improving the cable stripping efficiency and effect.

A vacuum pump, which is connectable to an external system and configured to evacuate material from the external system, includes a main housing defining a motor housing, a pump housing, and a partition wall that separates the motor housing and the pump housing. The pump housing is sealed relative to the motor housing to form a compression chamber that holds a lubrication fluid. The vacuum pump further includes a motor assembly that is positioned within the motor housing and a pump assembly that is positioned within the compression chamber. The pump assembly is driven by the motor assembly and is in fluid communication with the compression chamber. The pump assembly includes a pump chamber, a rotor having vanes that is driven within the pump chamber, and a seal that is in sliding contact with the rotor. The seal is moveable relative to the rotor.

A top toy being is provided. The top toy is used together with a field including a step part and an acceleration rail being configured on the step part. The top toy includes a rotating shaft extending in an axial direction, a rotor being concentric with the rotating shaft, and a ride-over part being configured on the rotating shaft above the rotor. The rotating shaft includes a landing part on a bottom end thereof. The rotor is configured to engage with the acceleration rail. The ride-over part includes an axially symmetrical sliding contact surface. The sliding contact surface has a diameter increasing as extending upwardly in the axial direction.

The utility model relates to the field of circuit breakers, in particular to an electromagnetic locking molded case circuit breaker. Comprising a housing including a mounting seat and a cover plate; an electromagnet is arranged in the first side wall of the mounting seat and is electrically connected with the contact system; the cover plate comprises a front panel and a second side wall; a magnetic attraction sliding part sliding front and back is installed in the second side wall, a first sliding abutting part is arranged at the front end of the magnetic attraction sliding part, and a first inclined face is arranged on the first sliding abutting part. A locking rod is arranged in the front panel, a reset spring is arranged on the locking rod, a second sliding abutting portion abutting against the first inclined face is arranged on the rear side of the locking rod, a second inclined face is arranged on the second sliding abutting portion, and the second inclined face abuts against the first inclined face. The operating mechanism comprises a release handle, and a locking hole matched with the locking rod is formed in the release handle; the locking rod prevents the release handle from rotating when external force is received, and the electromagnet attracts the magnetic attraction sliding part to achieve reinforced fixation between the installation base and the cover plate.

A quantitative glue dispensing device for an end surface of a cigarette paper tube of a granular heated cigarette, comprising: a drum (2) which receives cigarette paper tubes (1) by using cigarette slots (21), a glue pool (3) encircling a drum body and comprising built-in glue dispensing head assemblies (4) being provided at a position above the cigarette slots (21), and filter tip ends of the cigarette paper tubes (1) being exposed upward and always located directly below glue transfer rods (43) in a corresponding set of glue dispensing head assemblies (4); and a cam (6), a circular groove (61) that is concave upward and coaxial with the drum (2) being formed on a bottom end surface of the cam (6) to come into sliding contact with the tops of the glue transfer rods (43), such that the glue transfer rods (43) rotate synchronously with the drum (2) and repeatedly switch between a glue replenishing position (611), a "0" position (612), a glue dispensing position (613), and a transition position (614) in sequence, thereby implementing quantitative glue dispensing, automatic cleaning after glue dispensing, and automatic glue replenishment after cleaning of the cigarette paper tubes (1). The device can implement annular-patterned glue discharge with an adjustable glue dispensing volume, can be automatically sealed after glue dispensing, can implement quantitative glue dispensing and the like, thereby improving the product quality and production efficiency.

A toy for figure play includes: a base member including an annular cam; a rotation shaft erected on the base member such that a first axis of the rotation shaft is positioned on an inner side of the annular cam; and a seesaw member provided on the rotation shaft so as to be rotatable around a second axis perpendicular to the first axis of the rotation shaft. The seesaw member includes: a cam follower part configured to be in sliding contact with the annular cam; and a figure accommodation part configured to accommodate a figure.

The present invention belongs to the technical field of oil extraction and provides a sand fracturing wellhead device, comprising a main pipe, a branch pipe connected to the side of the main pipe, a mounting ring slidably installed in the branch pipe, and a second telescopic member fixedly installed in the branch pipe to drive the mounting ring to move, the mounting ring and the branch pipe are coaxially arranged and the outer side of the mounting ring is in sliding contact with the inside of the branch pipe, a first filter is fixedly installed in the mounting ring, and a temporary storage box is provided on the branch pipe, the temporary storage box is located on the outside of the branch pipe and a storage box and a connecting groove are fixedly installed at both ends of the temporary storage box, and the connecting groove is connected to the branch pipe. Compared with the prior art, the beneficial effects of the present invention are as follows: impurities on the first filter screen will fall off the first filter screen due to speed reasons, and at the same time, the oil flowing into the connecting groove will drive the impurities that have fallen off the first filter screen into the temporary storage box, thereby achieving the cleaning of impurities on the first filter screen, and the cleaning of the first filter screen can be achieved without stopping the transportation of oil.

The invention relates to the technical field of laser welding, and provides welding equipment for tricycle battery processing and production, the welding equipment comprises a rack, a welding module, a lifting module and a parallel adjusting module, a laser welding end in the welding module is fixedly arranged at one end of a moving frame, and a spring is connected between the moving frame and a vacuum suction nozzle; the lifting module comprises a lifting frame, a telescopic piece and a pressure applying protrusion, the moving frame penetrates through the lifting frame, the parallel adjusting module comprises a welding position adjusting part, a feeding driving part and a horizontal feeding part, the other end of the moving frame can make contact with an L-shaped frame, a transmission gear in the feeding driving part is fixedly connected with a sleeve, and the L-shaped frame is arranged on the surface of the sleeve in a sleeving mode. The surface of the driving shaft is movably sleeved with the sleeve, the transmission gear can be in transmission connection with the horizontal feeding part, the lower portion of the discharging shell makes sliding contact with the upper surface of the horizontal feeding part, an inclined rail, a Z-direction rail and a swing guide piece are arranged on the side face of the jig, and the welding device has the beneficial effects that the welding quality is good, and manual intervention is reduced.

A bridge crane comprises a guide rail, a trolley, a current collector, a sliding contact line, a lifting component and a cleaning component, the trolley is movably assembled on the guide rail, the sliding contact line is connected with the trolley through the current collector, the current collector is assembled on the sliding contact line in a sliding mode, and the lifting component is connected with the trolley through the lifting component. The lifting component and the cleaning component are assembled on the trolley, and the cleaning component is used for cleaning the sliding contact line. The bridge crane has the technical effects that stains and dust accumulated on the sliding contact line can be cleaned in time in the working process, accidents are avoided, and the production efficiency and convenience are improved.

The utility model relates to the field of cutting equipment, and discloses a slide rail assembly for a cutting machine, which comprises a rail piece and a slide block piece, rail parts are arranged on two sides of an inner groove of the rail piece, the slide block piece is in sliding fit with the rail parts, the slide block piece comprises a base and a movable block, and matching surfaces clamped with the rail parts are arranged on the outer sides of the base and the movable block. The rail piece and the sliding block piece are in sliding fit through the matching faces, a sliding layer used for contact fit is arranged on the matching faces, an adjusting block is arranged between the base and the movable block and used for adjusting the distance between the matching faces on the two sides of the base and the matching faces on the two sides of the movable block, and the rail piece and the sliding block piece are in sliding fit through the matching faces to obtain a large sliding contact face, so that sliding fit is more stable; on the basis, sliding fit is smoother through the self-lubricating sliding layers on the fit surfaces, meanwhile, the distance between the fit surfaces is allowed to be adjusted through an adjusting block through the design of the sliding block piece, it is ensured that the sliding block piece can be accurately installed in the rail piece, and the fit clearance can be adjusted during follow-up maintenance.

The utility model relates to the field of mobile phone production equipment, in particular to mobile phone frame automatic grabbing equipment which comprises a transplanting mechanism and a grabbing mechanism, the transplanting mechanism comprises a rack, a transverse moving assembly arranged on the rack and a vertical moving assembly arranged on the transverse moving assembly; the grabbing mechanism comprises two sets of gas claws arranged at intervals and clamping claw assemblies correspondingly arranged on the gas claws. The clamping jaw assembly comprises two groups of mounting seats, mounting grooves formed in the mounting seats, rotating rods which are rotationally mounted on the mounting grooves in a front-back symmetrical manner, abutting rods which are arranged on the side surfaces of the rotating rods and can abut against the mobile phone frame, and limiting assemblies which are arranged in the mounting grooves and limit the rotation of the rotating rods; the end parts of the rotating rods are in sliding contact with the mobile phone frame; during material grabbing, the end of the rotating rod makes contact with the mobile phone frame and moves on the mobile phone frame, then the abutting rod abuts against the area where the rotating rod passes through, then the mobile phone frame is clamped, and the technical problem that in the prior art, the grabbing precision and the quality of the mobile phone frame are affected by sweeps is solved.

The invention belongs to the technical field of oil exploitation, and provides a sand-prevention fracturing wellhead device which comprises a main pipe, the side face of the main pipe communicates with a branch pipe, a mounting ring is slidably mounted in the branch pipe, and a second telescopic part for driving the mounting ring to move is fixedly mounted in the branch pipe. The installation ring and the branch pipe are coaxially arranged, the outer side face of the installation ring is in sliding contact with the interior of the branch pipe, a first filter screen is fixedly installed in the installation ring, a temporary storage box is arranged on the branch pipe and located on the outer side of the branch pipe, a storage box and a communicating groove are fixedly installed at the two ends of the temporary storage box respectively, and the communicating groove communicates with the branch pipe. Compared with the prior art, the device has the following beneficial effects that impurities on the first filter screen can be separated from the first filter screen due to the speed, meanwhile, petroleum flowing into the communicating groove can drive the impurities separated from the first filter screen to enter the temporary storage box, and cleaning of the impurities on the first filter screen is achieved; and the first filter screen can be cleaned without stopping petroleum conveying.

The invention discloses a metro equipment mounting system, and relates to the technical field of metro equipment, the metro equipment mounting system comprises a collector shoe mounted on a metro vehicle chassis and a contact rail mounted beside a metro rail, a shoe body of the collector shoe is in sliding contact with the contact rail, and the collector shoe comprises a supporting seat and a swing arm arranged on the supporting seat; a spring mechanism is further arranged between the swing arm and the supporting seat, a shoe body is arranged at the end, away from the supporting seat, of the swing arm, the swing arm is connected with the shoe body through a base plate, and the base plate is arranged on the swing arm in a swing mode. In the jumping stroke of the shoe body, the base plate drives the shoe body to swing; the shoe body is arranged on the base plate capable of swinging, when the shoe body jumps, swinging of the base drives the shoe body to swing together, the inclination angle is gradually increased, and in the process that the shoe body is away from the contact rail, one side of the shoe body can basically keep in the state of making contact with the contact rail in the direction perpendicular to the advancing direction of a subway.

A hub is provided for a human-powered vehicle. The hub includes a hub axle, a first rotating body, a second rotating body, a first ratchet member, a second ratchet member and a slider. The first rotating body and the second rotating body are rotatably mounted on the hub axle. The first ratchet member rotates with the first rotating body. The second ratchet member rotates with the second rotating body. The slider rotates with the first rotating body and slide with respect to the second rotating body in a circumferential direction. The slider has a first contact surface in sliding contact with an axially facing surface of the second ratchet member. The slider has a second contact surface in sliding contact with a radially facing surface of the second ratchet member.

The invention relates to the technical field of curtains, in particular to a sectional type transmission rack for an electric curtain, each transmission unit comprises a rack body and a conductive assembly, and the rack body is provided with a first positioning mechanism; a second positioning mechanism used for preliminarily positioning the rack body and the curtain frame and a locking mechanism used for locking the rack body and the curtain frame are arranged between the rack body and the curtain frame, the conductive assembly comprises a sliding contact line clamped in the rack body, and the end of the sliding contact line is provided with a conductive connector used for being in conductive contact with the sliding contact line of the adjacent transmission unit; the rack bodies of the adjacent transmission units are inserted and positioned through the first positioning mechanism to complete splicing, the adjacent sliding contact lines are conducted through the conductive connectors, and therefore transmission racks of different length specifications are formed through splicing, and the transmission racks and the curtain frame are fixed through the second positioning mechanism and the locking mechanism to form curtain rails of different length specifications. The traditional processes of field measurement, cutting, secondary assembly and the like are omitted, and the transportation cost is reduced.

The invention relates to a transporting device capable of being used for transporting mushroom charging baskets, and solves the technical problems that when an existing agaricus bisporus collecting device is used for collecting picked agaricus bisporus, manpower is consumed, efficiency is low, and the collecting quantity is small. First walking bottom wheels are connected to the bottom of the first frame, the first walking bottom wheels and the first guide rails roll in a matched mode, a first walking motor used for driving the first walking bottom wheels to rotate is connected to the first frame, a sliding contact line is arranged on the outer side of the first guide rails, and a carbon brush and a first displacement assembly driving the carbon brush to make electrical contact with the sliding contact line are arranged on the first frame. The mushroom collecting efficiency and the automation level are improved, and the higher intelligent operation requirement is met.

The invention belongs to the technical field of natural gas pipelines, and particularly relates to a self-compensation device for a metal sealing ring of a high-pressure natural gas pipeline. An outer connecting sleeve is fixedly connected to the exterior of a first pipeline, and a wear-resistant mechanism is mounted between a first inner connecting sleeve and a second inner connecting sleeve; the space between the first sealing ring and the packing sealing plate and the space between the second sealing ring and the packing sealing plate are filled with rigid packing, and the space between the first sealing ring and the second sealing ring is filled with flexible packing; a first toothed plate is fixedly connected to the exterior of the inserting plate, a sliding rod is slidably connected to the inner side of the translation groove, a clamping mechanism is installed at one end of the sliding rod, and a positioning mechanism is installed at the other end of the sliding rod; according to the device, rolling friction of balls is adopted to replace sliding contact, high-pressure vibration abrasion is greatly reduced, rigid-flexible double-filler combination elastically responds to deformation, continuous pressing of a sealing face is maintained, internal pressure impact is resisted through the right-angle toothed plate meshing self-locking design, and zero-leakage stable connection under the extreme working condition is achieved in combination with three-stage insertion rod positioning and bolt fastening.

The invention discloses an automatic numbering machine and a complement printing system, and the automatic numbering machine comprises a core shaft which is connected to a base; the character wheel is rotationally connected to the outer portion of the mandrel, a plurality of printing numbers are arranged on the outer side of the character wheel, and a plurality of locking grooves opposite to the printing numbers in the radial direction are formed in the inner side face of the character wheel; the axial positioning lock is positioned in the mandrel and is provided with a top lock wedge capable of axially moving and an ejector pin in sliding contact with the top lock wedge; and when the top lock wedge is driven to axially move, the ejector pin radially extends out of the mandrel and is clamped in the lock groove or radially retracts and retreats from the lock groove. According to the invention, the problem of irregular printing numbers in the process of complementing and printing small banknotes by a large-piece complementing machine can be solved.

A slip ring arrangement according to the invention for an electric machine comprises a first slip ring having a radial inner surface and a radial outer surface, a first contact pin forming an electrically conductive sliding contact with the first slip ring, a first conductor extending axially from the first slip ring and electrically connected to the first slip ring, and a substantially hollow cylindrical first support element having a radial inner surface and a radial outer surface. The first slip ring is arranged with its radial outer surface against the radial inner surface of the first support element. The first conductor is enclosed between the radial inner surface and the radial outer surface of the first support element.The first contact pin is guided radially displaceably within a second support element and is subjected to, or can be subjected to, force in a first radial direction. The second support element is arranged in a volume defined radially by the radial inner surface of the first slip ring, and the second support element is rotatably arranged relative to the first support element. Furthermore, the first contact pin can be subjected to force by a fluid on the side radially opposite the sliding contact. The invention further comprises a rotor of a separately excited synchronous machine.

The invention relates to the technical field of stamping dies, in particular to an automatic deburring stamping die. Comprising an upper die; the lower die is arranged under the upper die; the mounting frame is connected into the lower die; the first sliding frame is slidably connected into the mounting frame; and the second sliding frame is slidably connected to the interior of the mounting frame, the second sliding frame is in sliding contact with the first sliding frame, and cavities and sliding grooves are symmetrically formed in the second sliding frame and the first sliding frame. The crankshaft is driven by the first driving motor, the first sliding frame and the second sliding frame can be driven to do reciprocating motion, so that the grinding plate connected to the first sliding frame and the second sliding frame can automatically grind and deburr the side face of a punched and formed workpiece, and meanwhile, the chamfering assembly can grind and deburr the edge of a round hole in the workpiece; in this way, the deburring work can be automatically completed in the discharging process of the workpieces, manual or special equipment does not need to be additionally arranged, the whole production period is shortened, and the overall production efficiency is improved.

The invention discloses a sliding contact line power supply mechanism applied to a vertical walking RGV, and relates to the technical field of sliding contact line power supply mechanisms, the sliding contact line power supply mechanism comprises an equipment main body and a sliding contact line, the equipment main body is provided with a guide mechanism, the sliding contact line is slidably provided with a current collector, the current collector is matched with the guide mechanism, the current collector is provided with a plurality of carbon brushes, and the carbon brushes are matched with the guide mechanism. The current collector is provided with a position adjusting assembly and a voltage adjusting assembly which are used for automatically adjusting the contact pressure between the carbon brush and the sliding contact line in a matched mode. The device has the advantages that the contact pressure between the carbon brush and the sliding contact line can be automatically adaptively and accurately adjusted before equipment operation, and the stability of providing electric energy for follow-up equipment main body movement through cooperation of the carbon brush and the sliding contact line can be improved; the contact pressure between the carbon brush and the sliding contact line can be further automatically adjusted in time, and the stability of electric energy provided for the equipment main body through cooperation of the carbon brush and the sliding contact line can be further ensured.

The invention belongs to the technical field of valve executing parts, and discloses an executing mechanism driven by shape memory alloy, which comprises a supporting disc and a guide cylinder, a first binding post, a second binding post and a plurality of groups of positioning columns are arranged on the top surface of the supporting disc, the plurality of groups of positioning columns are spirally distributed, and a memory alloy wire is arranged on the top surface of the supporting disc. One end of a memory alloy wire is connected with the second binding post, the memory alloy wire is in sliding contact with the surface of the positioning column, and finally the memory alloy wire is in contact with the surface of the first binding post and then penetrates through a through hole in the center of the supporting disc to penetrate into a guide cylinder, and a connecting cylinder at the top end of the guide cylinder penetrates into the through hole in the center of the supporting disc; a positioning spring and a sliding block are arranged in the guide cylinder in a penetrating mode, the sliding block is connected with the tail end of the memory alloy wire, and a mandrel is arranged at the bottom end of the sliding block. The memory alloy wire is arranged in a spiral mode and occupies a smaller space, when the memory alloy wire is heated and integrally contracts, the memory alloy wire pulls the sliding block to move, longer linear displacement is achieved, and the executing mechanism is more compact in structure.

The utility model discloses a knitting machine broken line monitoring shutdown device which comprises a supporting assembly, a mounting plate, a plurality of monitoring assemblies, a warning assembly and a controller, the mounting plate is arranged on the supporting assembly, and a mounting frame is arranged on the mounting plate; the monitoring assembly is arranged on the mounting frame and comprises an adjusting part, a fixed frame, a telescopic tensioning part, a rotating roller, a first metal sheet and a second metal sheet, and the adjusting part is arranged on the mounting frame; the fixing frames are respectively arranged on the adjusting pieces; the telescopic tensioning pieces are arranged in the fixing frame. The end part of the rotating roller is rotationally arranged at the extending end of the telescopic tensioning piece; the first metal sheet is connected with the extending end of the telescopic tensioning piece and located below the rotating roller. The second metal sheet is arranged on the fixing frame and slidably abuts against the first metal sheet; the warning assembly is arranged on the mounting frame; and the controller is arranged on the mounting plate. Therefore, yarn breakage detection can be performed on the yarn in the knitting machine, so that the product quality is ensured, and the production efficiency is improved.

The invention provides a circulating moving power supply device and a power supply method for moving equipment on a production line. The power supply device comprises a rack, an annular circulating moving mechanism arranged on the rack and an annular sliding contact line fixedly arranged on the rack. The annular slide wire is connected with a power supply and is arranged on the periphery of a moving path of the annular circulating moving mechanism; a plurality of current collectors are arranged at the moving end of the annular circulating moving mechanism, and an electric brush on each current collector is in sliding contact with the annular sliding contact line and outputs stable voltage for supplying power to a load; the target test equipment does not need to be moved away from the production line, the equipment on the production line can be synchronously and movably supplied with power for testing, and the test efficiency is greatly improved.

The utility model relates to the technical field of solid powder feeding, in particular to a quantitative feeding device for solid powder processing, which comprises a fixing plate, a feeding pipe is fixedly arranged on the fixing plate in a penetrating manner, and a quantitative pipe which can rotate to the position right below the feeding pipe and is communicated with the feeding pipe in a sealing manner is arranged below the feeding pipe. The top of the quantitative pipe is connected with a sealing plate capable of sealing the bottom of the feeding pipe, one side of the feeding pipe is provided with a wall scraping and pushing mechanism which is located in the rotating face of the quantitative pipe and makes vertical sliding contact with the inner wall of the quantitative pipe, and a blocking sliding plate which can stretch into the quantitative pipe under the feeding pipe from the bottom to rotate into the quantitative pipe under the feeding pipe is arranged under the feeding pipe. According to the quantitative feeding device, the quantitative feeding precision is high, and the problem that adding and metering are affected due to the fact that fixed powder is hardened is solved.

The invention discloses an automatic wharf for water conservancy informatization and water conservancy projects, mainly relates to the technical field of wharf docking, and comprises a wharf main body, and a limiting assembly and a ship locking assembly are mounted on the wharf main body; the limiting assembly connecting rods drive the annular air bags to freely swing around the hinge shafts, the multiple annular air bags get away from or get close to each other and make sliding contact with the prows of the ships, and docking limiting is provided for the ships with the prows in different shapes. The ship locking assembly is provided with an air spring and a rotating swing arm, the air spring stretches out and draws back to drive the rotating swing arm to clamp the ship side of the ship, a rotating roller is installed at the executing end of the rotating swing arm, a servo motor and a speed reducer in the rotating roller rotate and lock to drive the ship to enter, exit and berth, and therefore the ships of different shapes and different sizes can be stably and accurately berthed.

An improved perforating gun with novel endplates is disclosed along with a corresponding method of assembly. The endplate may include a base with first end separated from a second end separated by a curved sidewall centered around a longitudinal axis and a set of tube tabs flexibly coupled to the base and extending from the second end. The endplate may include a carrier tab with an integrated alignment pin. Selected embodiments may also include a zero-tension connector with a sliding contact mounted within a cavity of a housing, a through-wire connected to the sliding contact. The novel endplate reduces the cost and complexity of manufacture and installation.

The connection device for connecting two electric units, including a case in which are arranged: an electric wire to be linked to the first unit and including a conductive core encircled by an insulating sheath and a conductive tab to be linked to the second unit and secured with the stripped end of the conductive core, all of which being immersed in a sealing material filling the case and bonded to the insulating sheath, the device including an intermediate envelope partially coating the insulating sheath, so that it is in contact with the sealing material only over a reduced portion, where the intermediate envelope is in sliding contact with the sealing material and / or the insulating sheath.

The present invention relates to a flat profile clamp (10) in which one or both contact surfaces (25, 45) of the upper and lower circumferential end sections (2, 3) have a non-flat and preferably complementary cross-sectional shape in the width direction of the strip material (1). The sliding contact of the upper contact surface (45) on the lower contact surface (25) results in a self-centering effect of the strip end sections (2, 3) during a strip closing process.

The invention discloses a material fatigue damage measuring device and method based on Ampere force loading. The device comprises a base support; the circular magnetic field generating device is fixed on a top plate of the base bracket and is connected to the magnetic field controller through a first lead to adjust parameters of a magnetic field; the two sliding contact clamps are installed on the baffles on the two sides of the base support respectively. A to-be-tested material is fixed between the two sliding contact clamps, and the sliding contact clamps clamp the to-be-tested material through a sliding contact structure; the constant current source is connected to the two ends of the to-be-tested material through a second wire to form a closed loop, and ampere force is generated when current passes through the to-be-tested material; the constant current source provides constant current for the to-be-tested material and has an overcurrent protection function; according to the method, the stress and fatigue damage of the material under the action of the Ampere force can be accurately calculated through accurate current and magnetic field control in combination with the calculation formula of the Ampere force.