25results about How to "Reduce fatigue strength" patented technology

The present invention belongs to the field of bored cast-in-place piles, specifically, an efficient slurry discharge device for bored cast-in-place piles, including a guide barrel, the outer wall of the guide barrel is sleeved with a collar, the lower side of the collar is installed with an annular plate, the annular plate and the collar are fixedly connected by a connecting rod, the four sides of the surface of the collar are fixedly installed with transverse plates, the bottom of the transverse plate is installed with a first hydraulic cylinder, and the tail end of the first hydraulic cylinder is fixedly installed with a moving wheel. The present invention can drive the limiting slider to slide in the limiting slide groove through the second hydraulic cylinder, so that the position of the guide barrel can be fine-tuned, so that when docking with the grouting hole, there is no need to manually push it after hoisting for alignment, the operation is quick and convenient, and manpower is saved, the fatigue strength of the staff is effectively reduced, and the efficiency is improved. Moreover, the annular plate is supported on the ground, so that the device is firmly supported after alignment and connection, and tilting is effectively avoided.

The utility model relates to the technical field of box turnover tools, in particular to a pneumatic balance-based special box turnover tool which comprises a fixing frame, two rotating plates, a rotating frame, a first cross beam, a second cross beam, two connecting rods, a connecting beam, a bearing frame, a box body, a power assembly, a connecting assembly, a first clamping assembly and a second clamping assembly, the box body is pushed to rotate in a frame formed by the connecting assembly, the first cross beam and the second cross beam; when the box body is lifted upwards, the power assembly is started, the abutting connecting rods move upwards, the first cross beam and the second cross beam rotate anticlockwise between the two connecting rods, and the connecting beam rotates clockwise around the first cross beam and the second cross beam; and when the box body needs to be overturned, the first clamping assembly and the second clamping assembly can provide a basis for rotation of the box body, in this way, a worker can conveniently move, overturn and lift the box body, and the box body loading and unloading efficiency and quality are effectively improved.

The invention discloses an auxiliary system for ultrasonic examination, which comprises a movable mechanical arm, and the movable mechanical arm comprises a first arm section, a second arm section, a third arm section, a fourth arm section, a fifth arm section and a sixth arm section which are rotationally connected in sequence; a plurality of mounting holes are formed in the head end of the first arm section, a switching disc is hinged to the tail end of the sixth arm section, and a hand support is mounted on the switching disc. According to the invention, the movable mechanical arm can be controlled to quickly and accurately move the hand support to the examination part by holding the ultrasonic probe with the gyroscope by hand, and the arm is supported by the hand support in the moving process, so that the arm muscle fatigue of an ultrasonic doctor is greatly relieved, the ultrasonic examination efficiency is improved, the operation stability is kept, and the ultrasonic image quality is ensured.

The utility model discloses excavator chain rail joint production mould cleaning device, including cleaning device body, cleaning device body includes work table, filter module and cleaning subassembly, the work table is fixed with the fixed frame through bolt, and filter module has first filter module, second filter module and water storage tank in proper order from top to bottom, and cleaning subassembly is connected to water storage tank through pipeline, and is equipped with pressurized water pump, and cleaning subassembly includes spray module and removes the spray module. Realized semi -automatic cleaning, and operating personnel only need to place the mould on the fixed frame, and set up the parameter, and personnel can complete the cleaning process according to the demand, and greatly reduce the labor intensity, reduce the manual cost, and water storage tank can effectively recycle and handle the cleaning wastewater, reduce the pollution to the environment.

The present invention relates to an automatic drilling self-locking device for a rotary drilling rig, a drilling control system and a control method, comprising a handle, a pressure plate, a power head motor, a main valve, a self-locking pilot valve, an annular self-locking electromagnet, a pressurizing solenoid valve, a main pump, an auxiliary valve, a floating solenoid valve, a winch motor and a pressurizing oil cylinder. The device can not only realize the drilling self-locking function of the power head, but also realize the intelligent operation of automatic drilling through system control of pressurizing linkage, reduce the fatigue intensity of operators and improve construction efficiency.

The utility model provides a sealing device suitable for an angle valve, and belongs to the technical field of angle valve sealing auxiliary devices. Comprising a lantern ring, an integrally-formed baffle ring is arranged at the top of the lantern ring, an integrally-formed L-shaped supporting ring is arranged at the bottom of the lantern ring, a first sealing ring is arranged on one side of the L-shaped supporting ring, and a second sealing ring is arranged on the other side of the L-shaped supporting ring. A second sealing ring is arranged on the other side of the L-shaped supporting ring. Through the sealing assembly, water flow can be prevented from seeping from gaps between the inner wall of the external water pipe and the outer wall of the water outlet end and the outer wall of the water inlet end, the first sealing ring and the second sealing ring can seal the side walls of ports of the water outlet end and the water inlet end, the baffle ring can seal the side wall of a pipe opening of the external water pipe, and the sealing waterproof effect is further improved; and compared with a traditional sealing and waterproof mode adopting thread seal tape winding, time and labor are saved, the fatigue strength of workers is reduced, and the sealing and waterproof effect is better.

The utility model relates to the technical field of vehicle transportation, in particular to a parking plate of a vehicle transportation semitrailer, which comprises a parking plate body, a baffle, a support and an overturning assembly, the overturning assembly comprises two track plates, a moving plate, a driving motor, a threaded rod, a first base, a second base and a supporting rod, the driving motor is started to drive the threaded rod to rotate, and the supporting rod is driven to rotate. The movable plate can be driven to move leftwards between the track plates due to the characteristic of threads, at the moment, one end of the supporting rod rotates clockwise in the first base, and the other end of the supporting rod rotates anticlockwise in the second base, so that the baffle is turned over to make contact with the outer side wall of an automobile tire, and the automobile tire is protected. In this way, the convenience of fixing the automobile by workers is improved, the fatigue strength of the workers can be effectively reduced, and the efficiency and quality of fixing the automobile are improved.

This utility model discloses a gauge for testing exhaust pipes, including a fixing component. The fixing component includes a base, and a fixing clamp for fixing the exhaust pipe is installed on the top end face of the base. A support component is installed on one side wall of the fixing component, and a test component is slidably connected to the inner wall of the support component. Limiting components matching the test component are installed on both sides of the inner wall of the support component. A control component is threadedly connected to the bottom end of each set of limiting components. The limiting component includes a pair of hollow shells, and several sets of guide blocks are slidably connected to one side wall of the hollow shells. Compared with the prior art, this utility model's gauge for testing exhaust pipes eliminates the need for staff to frequently raise the impact blocks in impact testing laboratories. Furthermore, the height of the impact blocks can be adjusted according to actual testing needs to obtain different test results, greatly reducing staff fatigue and increasing the accuracy of experimental results.

The utility model discloses a handle for electronic thoracoscope and laparoscope, including casing, interface, signal board, mainboard and rotating component, the front end outside of casing is provided with locking device, and locking device inside hollow, the interface, signal board and mainboard all are located in the casing, the interface is located locking device terminal, signal board and mainboard are connected through FPC between, and signal board and mainboard are rigidly connected between, rotating component includes angle knob, gear and connecting rod, angle knob is located the outside of casing, and angle knob is set up in the outer peripheral surface of gear, and both synchronous rotation, the front end of gear is fixedly connected with mainboard through connecting rod. The utility model discloses still a kind of electronic thoracoscope and laparoscope. The utility model has the beneficial effect that: the utility model restricts the rotation angle of human wrist, improves the convenience of surgical operation, so that doctors can more conveniently and efficiently obtain different visual angle surgical field of view, ensure the accuracy of surgical operation.

The utility model relates to the technical field of antigen detection, in particular to a pathogen elution test tube, a cotton swab head can be scraped with the inner sides of a plurality of first annular scraping blades only by shifting a cotton swab up and down, so that sample pathogens on the cotton swab head are eluted, the use is more convenient, the elution effect of the pathogens is improved, and the detection efficiency is improved. The first flexible ring is used for blocking, liquid is prevented from being splashed out from the tube wall when the cotton swab is stirred, the cotton swab head can be effectively blocked, the cotton swab head is prevented from being disengaged from the tube body when the cotton swab is stirred up and down, the first flexible ring is used for stirring and guiding the cotton swab, and the cotton swab is prevented from being disengaged from the tube body. The swab swab can be inserted into the middle of the inner side of the first annular scraping blade in an accurate stroke, by arranging the first flow guide hole, when the swab swab is stirred, an extracting solution can flow up and down through the first flow guide hole, the pressure relief effect is achieved, the mixing effect of the extracting solution and a sample can be improved, the sample can be mixed in the solution more evenly and fully, and the sample quality is improved. And the detection precision is improved.

The invention belongs to the technical field of titanium alloy forming, and relates to a titanium alloy sheet bending forming method which comprises the following steps: (1) spraying: cleaning the surface of a sheet, spraying a protective coating until the film thickness is 0.2-0.3 mm, and drying the film in the shade; (2) annealing is conducted, specifically, the thin plate obtained after spraying in the step (1) is annealed, and the annealing temperature ranges from 700 DEG C to 925 DEG C; (3) bending is conducted, specifically, after annealing and heat preservation are finished, bending is conducted, and after bending forming is conducted, natural cooling is conducted to the room temperature; and (4) the step (2) and the step (3) are repeated, and bending forming of the whole product is completed. By the adoption of the method, bending forming of titanium alloy parts of different thicknesses and different materials can be achieved, the utilization rate of raw materials of products is increased, and the machining cost is reduced.

The present invention relates to a steel material comprising, in mass%, 0.30%≤C≤0.45%, 0.10%≤Si≤1.00%, 0.60%≤Mn≤1.20%, 0.20%≤Cr≤0.70%, 0.30%≤V≤0.47%, Ti≤0.015%, P≤0.100%, and S≤0.080%, the balance being Fe and unavoidable impurities, and having a P0 value defined by P0=P0'×V / P1, satisfying P0≥0.30, where P0'=Mn+0.49Cu+0.89Ni+0.40Cr-0.30Si, and P1=C+0.07Si+0.16Mn+0.61P+0.19Cu+0.17Ni+0.2Cr+V, in the formula, each element symbol represents the content of each element in mass%.

The invention relates to the technical field of harmful gas detection and emergency underground rescue, in particular to a valve well rescue device which comprises a folding herringbone ladder, a cross linear sliding table, a detection rod assembly and a winding drum lifting assembly. The winding drum lifting assembly is provided with a winding drum mounting bottom plate, a lifting motor, a lifting winding drum, a safety rope and a lifting hook, a gas detector assembly is mounted on the lifting hook, and the winding drum mounting bottom plate is fixedly connected with a sliding block of the cross-shaped linear sliding table which is horizontally arranged; the cross-shaped linear sliding table is fixedly installed at the lower end of a middle platform of the folding herringbone ladder, and the detection rod assembly comprises an electric telescopic rod connected with the winding drum installation bottom plate and a monocular vision sensor and / or an infrared sensor arranged at the front end of the electric telescopic rod. The invention provides a device capable of detecting harmful gas and automatically rescuing, so that the safety of constructors is guaranteed, and casualties and economic loss are reduced.

The utility model relates to the technical field of medical instruments, in particular to a tumor patient thermal therapy device which comprises a bed board, a first sliding rail is fixed to one side wall of the bed board, a matched first electric sliding block is arranged on the outer wall of the first sliding rail in a sleeved mode, a first adjusting plate is fixedly connected to the outer wall of the first electric sliding block, and a second adjusting plate is connected to one side wall of the first adjusting plate. The bottom of the second adjusting plate is connected with a servo motor, the outer end of a transmission shaft of the servo motor is fixedly connected with a connecting plate, and the tail end of the connecting plate is fixedly connected with a thermal therapy instrument body. The first adjusting plate can drive the second adjusting plate to ascend and descend, meanwhile, the second adjusting plate can drive the servo motor to transversely adjust, the servo motor can drive the thermal therapy instrument body to rotate, and therefore the thermal therapy instrument body can be adjusted in all directions. Therefore, thermal therapy operation can be carried out on different parts of a patient through rapid transposition.

The utility model relates to the technical field of steel pipe rolling and cooling equipment, in particular to a seamless steel pipe rolling and cooling device, which comprises a cooling box body, a box cover, a main pipe, a cold water tank, a spray pipe and a lifting component, and the lifting component comprises a hollow column, a sealing ring, a hydraulic cylinder, a base, a fixed inner frame, a movable plate, two baffles and a water outlet frame. Seamless steel pipes are sequentially placed in the arc-shaped grooves to be stacked, the two baffles can limit movement of the steel pipes, the hydraulic cylinder is started to contract till the movable plate makes contact with the fixed inner frame and the sealing ring, the water outlet frame can discharge cooling water into the cooling box body from the fixed inner frame, and after cooling is completed, the box cover is opened, and the cooling box body is closed. The hydraulic cylinder is started to abut against the movable plate to move upwards, workers can collect the seamless steel pipes in the cooling box body conveniently, the fatigue strength of the workers can be effectively reduced, and the working efficiency of the cooling box body is improved.

This utility model discloses a rebound hammer for non-destructive testing of UHPC compressive strength, belonging to the field of concrete engineering testing technology. It includes a hollow shell, an impact rod, an impact hammer, an impact spring, a guide rod, a hook assembly, and a switch. The impact rod is telescopically connected to one end of the shell. One end of the impact spring is fixed, and the other end is connected to the impact hammer. Both the impact hammer and the hook assembly are slidably connected to the guide rod. The hook assembly can slide along the guide rod and engage with the impact hammer. The switch controls the release of the impact hammer by the hook assembly. The free length of the impact spring is 134.4±0.5mm, and the impact length after stretching is 140.0±0.5mm. The wire diameter of the impact spring is greater than 1.5mm. The UHPC compressive strength regression equation is: ; the value of c ranges from -0.001 to -0.004, where is the average rebound value of the test area or specimen, is the average carbonation depth of the test area, and is the converted value of concrete strength in MPa. This enables non-destructive testing of the compressive strength of UHPC.

The utility model relates to the technical field of ultrafine pulverizers, in particular to a hammer and sieve gap adjusting mechanism of a hammer pulverizer, which comprises a pulverizing box, a hammer sieve, a mounting frame, a self-locking motor, a rotating shaft, a gear, a rack column, a rotating seat, a feeding component, a pulverizing component and a clamping component, the rack column is fixedly connected with the hammer sieve, and the feeding component is arranged above the pulverizing box; the crushing assembly is arranged on the inner side wall of the crushing box, the clamping assembly is arranged above the mounting frame, materials are put into the crushing box through the feeding assembly, a self-locking motor is started, a rotating shaft rotates, a rotating seat supports the rotating shaft to rotate, at the moment, a gear drives a rack column to slide in a corresponding rack hole, the distance between a hammer screen and the crushing assembly is adjusted, and the crushing effect is improved. And then the clamping assembly is used for fixing the gear to prevent the gear from rotating, the size of the crushed particles is controlled in this way, crushing of different requirements is achieved, and the fatigue strength of workers is reduced.

The utility model discloses a kind of breathable comfortable driving shoes, including shoe sole and vamp, vamp is breathable vamp, the convex edge is set to the bulge edge of shoe sole outer side edge corresponding fifth metatarsal bone position, convex edge is attached on vamp towards shoe outer side, shoe sole heel extends to corresponding heel, and is attached on vamp, so that shoe heel forms camber surface, the waist piece for being used to support foot is embedded on shoe sole on corresponding arch area, and breathable hole is set on waist piece, and the vent hole that communicates with breathable hole is set up on big bottom.The utility model is in the corresponding area of fifth metatarsal bone when wearing, and when collision, lateral impact energy is dispersed, foot peak stress is reduced, and wearing is more comfortable, shoe heel and shoe sole plane are smoothly connected, transition is smooth, reduce the contact distance of heel and vehicle ground, set waist piece, and set breathable hole, cooperate the vent hole of shoe sole and breathable vamp can realize the directional airflow circulation of "shoe sole→in shoe→vamp", improve ventilation efficiency, while maintaining lateral torsional stiffness.

This utility model relates to the field of quenching technology for high-elasticity spring production, specifically a rapid quenching device for stainless steel bars used in high-elasticity spring production. The device includes a base column and a worktable. An induction control box is fixedly connected to the upper surface of the worktable. Three induction copper tubes, all arc-shaped, are provided on one side of the control box. A clamping device is provided on the upper surface of the worktable, comprising a sliding groove. The groove is formed on the upper surface of the worktable, and a first screw is rotatably connected to the inner wall of the groove. A slider is slidably connected to the inner wall of the groove, and the slider is threadedly connected to the first screw. This utility model solves the problem that existing quenching equipment requires manual clamping of the bars using special tools, which easily leads to burns to operators during quenching and significantly increases labor costs due to prolonged clamping.

The utility model relates to the technical field of car couplers, and discloses a self-locking coupler knuckle capable of improving fatigue strength, which comprises a coupler knuckle main body, a coupler knuckle pin hole is arranged in the coupler knuckle main body in a penetrating manner, and a ventilation mechanism is arranged in a heat dissipation hole; the spiral flow guide groove is formed in the coupler knuckle protruding block, the spiral flow guide groove is used for forcing airflow to rotate to form vortex, the heat dissipation efficiency and the structural performance are remarkably improved, the spiral flow guide groove guides airflow to do spiral motion along the hole wall, the thickness of a boundary layer is damaged, and the heat conduction mode is converted into efficient turbulent mixing from low-efficiency molecular diffusion. The spiral track enables the actual flowing path of air flow in the hole to be prolonged by 30%-50%, the heat exchange time is prolonged, the coupler knuckle is particularly suitable for continuous heat dissipation in a low-heat-flux scene, the heat dissipation effect of the coupler knuckle is better, the situation that the fatigue strength is reduced due to long-time friction of the coupler knuckle protruding block is avoided, and therefore the practicability of the coupler knuckle in the using process is greatly improved.

The application provides a post-weld heat treatment method of an aluminum electrolysis cell shell, 1) installing a graphite anode and a graphite cathode on a heat treatment pool; 2) then loading resistance material and the shell into the heat treatment pool, and controlling the resistance material to completely bury, surround and cover the shell inside and outside and up and down and left and right; 3) connecting direct current, the direct current output by the graphite anode and the graphite cathode is transmitted to the resistance material, the resistance material generates heat when the direct current passes through the resistance material, the heat generated by the resistance material heats the shell to 500-700 DEG C and performs tempering treatment with heat preservation, and then naturally cools down after the tempering treatment is finished; 4) then moving part of the resistance material and the shell out; the welding residual stress is eliminated, the shape and size of the shell are stabilized, the distortion is reduced, the performance of base material and a welding joint is improved, the plasticity of the welding seam metal is improved, the hardness of a heat affected zone is reduced, the fracture toughness is improved, the fatigue strength is improved, the yield strength is recovered or improved, and harmful gas in the welding seam metal is released.

This application provides a ureteroscopic robot, relating to the field of medical device technology, comprising: a base; a lifting mechanism fixedly connected to the base for driving the lifting and lowering movement of the ureteroscopic endoscope; a horizontal feeding mechanism connected to the lifting end of the lifting mechanism for driving the horizontal forward and backward movement of the ureteroscopic endoscope; a rotating mechanism connected to the horizontal feeding mechanism, wherein the ureteroscopic endoscope is mounted on the rotating mechanism, and the rotating mechanism drives the ureteroscopic endoscope to rotate; a bending mechanism connected to the rotating mechanism for driving the ureteroscopic endoscope to bend; and a fiber optic delivery mechanism connected to the robot body and positioned close to the ureteroscopic endoscope for delivering optical fibers into the fiber optic channel of the ureteroscopic endoscope. This application achieves precise lifting, forward and backward movement, rotation, and bending of the ureteroscopic endoscope, as well as stable delivery of optical fibers, improving control precision, reducing the difficulty of surgical operations, and enhancing the stability of the overall machine operation, thereby effectively ensuring clinical operational efficiency and reliability.

This utility model provides a novel double-headed edge banding strip winding device, comprising a housing, a winding drive motor, an electrical control device, and an edge banding strip winding mechanism. The housing is equipped with a rotating worktable. The winding drive motor is electrically connected to the electrical control device, and its power output end is connected to the rotating worktable. The edge banding strip winding mechanism includes a transverse cylinder and a lifting cylinder. The transverse cylinder is connected to the electrical control device and an external air source via a solenoid valve, and its power output end is equipped with a pair of lifting cylinders. Each lifting cylinder is connected to the electrical control device and an external air source via a solenoid valve, and its power output end is detachably mounted with a winding chuck via a lifting mounting frame. An edge banding strip clamp is mounted on one side of the winding chuck. A positioning sensor is provided on one side of the lifting mounting frame. The positioning sensor is electrically connected to the electrical control device. This utility model has a compact structure, low manufacturing cost, and can efficiently achieve alternating continuous winding of multiple types of edge banding strips, improving edge banding strip winding efficiency and reducing edge banding strip production costs.

The invention relates to the technical field of threaded rods, and discloses a low-temperature-resistant high-toughness threaded rod surface treatment method which comprises the following steps: S1, burdening: selecting materials, and blanking according to a given specification and length; s2, material cutting is conducted, specifically, the blanked metal rod is cut into metal rods with the required specified length; s3, heat treatment is conducted, specifically, the metal rod obtained in the S2 is subjected to heat treatment to form a threaded rod rough blank; s4, thread rolling is conducted, specifically, the quenched threaded rod rough blank is subjected to machining and thread rolling, and a threaded rod main body is obtained; s5, surface treatment: carrying out surface treatment on the threaded rod rough blank; s6, ammoniation is conducted, specifically, the threaded rod body is placed in a gas nitriding furnace to be subjected to nitriding treatment; s7, electroplating is conducted, specifically, the nitrided threaded rod body is electroplated to obtain the low-temperature high-toughness threaded rod, the toughness of the threaded rod is improved through the nitriding technology, residual compressive stress generated on the surface after nitriding can offset part of tensile stress under fatigue loads, and therefore the fatigue strength is reduced, and the threaded rod can also be used in a high-load state.

The utility model relates to the field of solar energy, concretely relates to an energy storage power assisting device and photovoltaic equipment. First, an energy storage power assisting device includes pedestal, cam group, first traction piece, first elastic part, guide wheel and circular ring chain. The cam group rotatably sets up on the pedestal, and the cam group includes the first cam and the output wheel of fixed connection, and the first cam and the output wheel are sequentially arranged along the direction of cam group rotation axis, one end of first traction piece is fixedly connected with the first cam, the other end of first traction piece is fixedly connected with first elastic part, the guide wheel is fixedly set up on the pedestal, and the guide wheel axis is not parallel with the rotation axis of cam group, one end of circular ring chain is fixedly connected with the output wheel, and the other end is fixedly connected with external component through the guidance of guide wheel. Secondly, a photovoltaic equipment is provided.