59results about How to "Small driving force" patented technology

The invention belongs to flow industry pressure coupling devices, and discloses a switching valve with a pressure pre-balancing function and a pressure coupling device.The switching valve comprises a valve body with a plurality of connecting ports, the valve body is provided with a driving end valve component, and the driving end valve component comprises a driving end valve deck, a driving rod, a driving end valve plate, a driving end valve seat and a nut; a basic unit of the pressure coupling device is at least two single-cylinder devices arranged side by side, and each single-cylinder device is mainly composed of a driving end module, a response end module and a pressure exchange cylinder connected between the driving end module and the response end module. Wherein the driving end module comprises a four-way switching valve and a three-way switching valve which are provided with driving end valve components, and the response end module comprises a four-way check valve and a three-way check valve which are provided with response end valve components. The device has the characteristics of simple pressure pre-balancing structure, low driving energy consumption, good pressure difference self-tightening sealing effect, compact overall structure, convenience in installation and maintenance and the like.

The invention belongs to the technical field of high-temperature alloy heat treatment, and relates to a method for inhibiting abnormal growth of GH6783 alloy grains. The method comprises the following steps: step 1, determining the non-growth temperature of GH6783 alloy grains; 2, after the temperature of the heat treatment furnace reaches the non-growth temperature, the GH6783 alloy bar is placed in the furnace, timing is started after the temperature in the furnace reaches the non-growth temperature again, and heat preservation is conducted for the appointed time A; and 3, the GH6783 alloy bar is slowly cooled to the beta-phase aging temperature along with the furnace and then subjected to heat preservation for 8-10 h, and after heat preservation is finished, the GH6783 alloy bar is discharged out of the furnace and subjected to air cooling. According to the method, the abnormal growth phenomenon of crystal grains after solution heat treatment of the GH6783 alloy bar can be remarkably inhibited, and the structure uniformity of the GH6783 alloy is improved.

A method for manufacturing high-strength, hydrogen-embrittlement-resistant bolts based on microsphere shot peening, and the bolts themselves, are disclosed. The manufacturing method includes: S1, cold heading and thread rolling of alloy structural steel billets to obtain bolt forming parts; S2, surface cleaning of the bolt forming parts, followed by overall surface peening with microspheres driven by high-pressure air; after overall peening, targeted strengthening peening treatment is performed on stress concentration areas such as thread roots, undercut grooves, and flange transition corners to obtain reinforced bolt parts; S3, the reinforced bolt parts are cleaned, dried, and phosphated to obtain finished bolt parts. This design, through a "overall + targeted" composite microsphere shot peening strategy, introduces a uniform residual compressive stress field and a micron-level fine-grained plastic deformation layer on the bolt surface, forming a thicker strengthening layer in stress concentration areas, significantly improving the fatigue strength and delayed fracture resistance of high-strength bolts, while ensuring uniform surface roughness and stable assembly friction coefficient.

This invention relates to the field of polishing machines, specifically disclosing a concrete polishing machine with protective functions. It includes a base with a hand handle, a mounting plate on the base, a polishing assembly on the base, a drive assembly connected to the polishing assembly on the base, a push assembly on the base, a brake assembly between the push assembly and the polishing assembly, and an inflation assembly on the mounting plate. This invention provides primary buffering, secondary buffering, braking, and support functions. When the hand is released, it effectively counteracts the polishing machine's continuous spinning and irregular movements, providing effective protection against abnormal movements from multiple angles. This ensures the polishing machine quickly stops working after an malfunction, reducing collision damage and preventing malfunctions, minimizing threats to surrounding workers, improving work efficiency, and accelerating construction progress.

The application relates to the technical field of sealing joints, in particular to a sealing joint for a high-pressure hydrogen gas conveying pipeline, which comprises a male connector seat, a female connector seat and a valve core group, the joint ends of the male connector seat and the female connector seat are respectively provided with lock plates and flange joint plates, the outer periphery of the flange joint plate is provided with wedge locking blocks and screw rods, the opposite surfaces of the lock plate and the flange joint plate are respectively provided with first sealing ring groups and second sealing ring groups, the surface of the lock plate is provided with a sealing gasket, the valve core group comprises a core shaft, a spring, a valve sleeve and a guide head, and a gradually tapered section, a throat section and a gradually expanded section flow channel structure are formed between the valve sleeve and a flow channel. The male connector seat and the female connector seat are quickly locked and connected through the wedge locking blocks, a composite sealing structure is formed through labyrinth sealing and elastic sealing, the static pressure of a joint jointing area is reduced through the Venturi effect, the hydrogen gas leakage driving force is reduced, a multilayer leakage prevention mechanism is formed, and the sealing joint has the advantages of good sealing performance, high connection stability and suitability for high-pressure hydrogen gas conveying working conditions.

The invention relates to an automatic brick overturning mechanism which comprises a vehicle body, a suction cup overturning module and an overturning driving mechanism. The suction cup overturning module comprises a rotating shaft rotationally connected to the vehicle body, a pair of semicircular sectors fixedly connected to the two ends of the same side of the rotating shaft and rotationally matched with the vehicle body correspondingly, and a first butt joint structure located between the pair of semicircular sectors and fixedly connected to the rotating shaft, and the first butt joint structure is detachably connected with the suction cup butt joint module. The overturning driving mechanism comprises a pair of winding drum modules installed on the vehicle body and a driving module located between the pair of winding drum modules and used for driving the pair of winding drum modules to synchronously rotate in a reciprocating mode, pull ropes are wound around the pair of winding drum modules in the opposite directions respectively, and the two pull ropes extend and are connected to the pair of semicircular sectors respectively; the semicircular sector is provided with arc grooves along the arc edges, the pull ropes rotate along with the semicircular sector to be partially embedded and wound in the arc grooves, and the two arc grooves serve as connecting points of the two pull ropes at the first end and the second end respectively. According to the brick overturning device, automatic overturning of large bricks can be achieved through a small-specification motor.

The utility model discloses an exposure scanning shaft drive mechanism, exposure scanning shaft drive mechanism adopts the mode of linear motor module drive, eliminates mechanical transmission gap, improves the scanning speed of exposure scanning shaft, improves the positioning accuracy of vertical exposure equipment, satisfies the high accuracy requirement of exposure machine field. The counterweight of the present application is connected with the mounting base, and the counterweight offsets the weight of the lens module, which can reduce the driving force when the linear motor module is driven, so that the exposure scanning shaft drive mechanism is suitable for heavy load occasions. At the same time, the problem of the lens module falling due to its own weight after the linear motor module is powered off can be avoided, and the adaptability of the exposure scanning shaft drive mechanism is improved. In addition, the exposure scanning shaft drive mechanism of the present application has simple and reliable structure, low noise and low wear, which greatly reduces the maintenance cost in the later period.

The present invention belongs to the technical field of pressure regulating and reducing valves, and specifically relates to a large-caliber high-pressure hydraulic pressure regulating and reducing valve for wind tunnel test equipment, wherein the valve body is provided with an inflow channel, an outflow channel and a pressure regulating and reducing cavity, the valve seat is fixed on the opening of the inflow channel and the pressure regulating and reducing cavity, the lower end of the noise reduction sleeve is fixedly connected to the valve seat, and the upper end is butted with the valve cover, a plurality of outflow holes are provided on the noise reduction sleeve, the cavity between the outer wall of the noise reduction sleeve and the inner wall of the pressure regulating and reducing cavity is connected with the outflow channel, the valve flap is fixedly installed on the valve flap cover, a through hole is provided on the valve flap, a plurality of balancing holes are provided on the upper wall of the valve flap cover, the valve flap cover is movably installed in the valve cover, the valve cover is fixed on the through hole between the pressure regulating and reducing cavity and the outside, the upper end of the valve flap cover is connected to the valve stem, and the valve stem passes through the valve cover and is connected to the piston rod of the hydraulic cylinder. The present invention can reduce the driving force of the opening and closing process, improve the adjustment accuracy; is beneficial to the on-site pipeline layout; plays the role of reducing noise and stabilizing airflow; and realizes the role of reducing noise and stabilizing airflow.

The utility model discloses a kind of contact mechanism, load switch and electric meter, it is related to low-voltage electrical apparatus technical field.The contact mechanism includes shell and the moving contact, static contact and elastic member being set in shell, the one end of moving contact is connected with elastic member, the other end is used to be combined with static contact and be opened and closed, both ends of moving contact can be movable relative to static contact, elastic member is used to apply elastic force to moving contact in the opened and closed state to assist closing, elastic member is also used to apply elastic force to moving contact in the closed state to increase contact pressure.The contact mechanism can solve the problem that closing driving force is larger in prior art, energy consumption is higher, economic benefit is poorer, and contact pressure is smaller, reliability is poorer.

The invention discloses a flexure member, comprising a support portion including a first support end and a second support end; the connecting part is arranged between the first supporting end and the second supporting end to connect the first supporting end and the second supporting end, the length of the connecting part is larger than the width of the connecting part, and the minimum width of the connecting part is larger than the thickness of the connecting part; the connecting part comprises at least one section part extending linearly and at least two bent bending parts, and each bending part is arranged between two adjacent section parts and between the section part and the supporting part, so that the extending direction of each section part can be changed. The bending parts are arranged on the connecting part, so that the two supporting ends of the bending part can relatively move in a large range, the borne resistance is small, the local rigidity of the connecting part is further reduced by arranging the narrowing part, and the bending part is softer.

This invention relates to the field of construction machinery technology, providing a paver control method, a paver travel system, a paver, and electronic equipment. The paver control method includes acquiring the current discharge pressure of the travel pump; determining that the current discharge pressure of the travel pump is greater than a preset pressure, where the preset pressure is less than the design discharge pressure of the travel pump; and controlling at least one of the speed and acceleration of the paver's travel mechanism to decrease until the current discharge pressure of the travel pump is determined to be less than or equal to the preset pressure. The paver control method provided by this invention addresses the defect in existing technologies where sudden stop of the travel mechanism leads to rollover. By controlling the discharge pressure of the travel pump, it ensures that the travel pump operates stably, providing stable driving force to the travel mechanism, thus achieving controllable paver movement.

The application relates to the technical field of relays, in particular to a novel magnetic latching relay which comprises a shell, a contact mechanism fixedly installed in the shell, the contact mechanism comprising a first static foot and a second static foot, the first static foot and the second static foot being fixedly installed on one side in the shell, a first static contact being fixedly installed on the first static foot, a second static contact being fixedly installed on the second static foot, a rotating mechanism being rotatably connected to one side in the shell and located between the first static foot and the second static foot, two dynamic contacts being fixedly installed on the rotating mechanism and used for cooperating with the first static contact and the second static contact to realize circuit on-off, a pushing assembly being fixedly installed in the shell and used for driving the rotating mechanism to rotate, and an electromagnetic assembly being fixedly installed in the shell and used for driving the pushing assembly, through rotation of the rotating mechanism, the two dynamic contacts on the rotating mechanism are respectively attached to the first static contact and the second static contact, the single-contact stroke is shortened, and the working efficiency of the device is improved.

The utility model discloses a computer dust adsorbing and removing assembly, and relates to the technical field of dust removing assemblies, the computer dust adsorbing and removing assembly comprises a middle layer plate, an upper cover plate and a bottom cover plate, the four corners of the middle layer plate are all rotatably connected with rotating shafts in an inserted mode, and each rotating shaft comprises three first rotating shafts and a second rotating shaft; a first transmission chain wheel and a second transmission chain wheel are fixedly connected to the shaft wall, located below the middle-layer plate, of the three first rotating shafts and the shaft wall, located below the middle-layer plate, of the second rotating shaft in a sleeving mode correspondingly, and the first transmission chain wheel and the second transmission chain wheel are in transmission connection through a transmission chain belt. The masking paper feeding device has the advantages that masking paper is discharged through the unwinding roller, the masking paper is guided by the rubber guide roller to move close to the surface of a computer, and dust is effectively adsorbed and removed. The adhesive force between the masking paper and dust is strong, and no adhesive residue is left, so that the thoroughness and safety of dust removal are ensured.

This utility model relates to a locking mechanism for a multi-point lock, a door lock, and a door lock suitable for wide cabinet doors. The locking mechanism includes a locking base, a steel bolt, a drive shaft component, and a shaft drive assembly. The drive shaft component is rotatably mounted on the locking base. The shaft drive assembly includes a driven member mounted on the input shaft of the drive shaft component and an active member located to the side of the drive shaft component and sliding linearly. The driven member is a rocker arm, which includes a mounting portion fixed to the input shaft. The mounting portion is connected to a rocker arm extension extending radially along the input shaft. The active member has a drive connection end connected to the rocker arm extension, which is movable relative to the rocker arm extension along the length of the rocker arm extension. It has the advantages of high transmission efficiency and labor-saving operation.

The present invention discloses a vortex ring generating device, an air conditioner indoor unit and an air conditioner, wherein the vortex ring generating device comprises a shell and a vortex ring generating part; the shell comprises a wind tube and a current collecting part, the wind tube has an air outlet, the current collecting part is installed at the air outlet, an air supply port connected to the wind tube is formed on the current collecting part, and the air flow area of ​​the air supply port is smaller than the air flow area of ​​the air outlet; the vortex ring generating part comprises a push plate assembly and a driving device, the push plate assembly is arranged in the shell, the push plate assembly comprises a flexible part and a push plate connected to the flexible part, the flexible part is connected to the peripheral wall surface of the shell, the push plate is arranged toward the air supply port, and the driving device drives the push plate to reciprocate in the shell to periodically drive the air flow to be blown out from the air supply port. The vortex ring generating part of the vortex ring generating device of the present invention has a simple structure, strong sealing performance, high reliability and low cost.

Provided is a test device provided with an auxiliary support device that is provided together with a telescopic device that moves with multiple degrees of freedom, and that has a mechanism that receives a static load within an allowable eccentric deflection angle. The test device is provided with six sets of actuators (10) which extend and retract between a base (101) and a support table (103), the relative postures of the six sets of actuators (10) are changed at the separation intervals of the six sets of actuators (10) to excite vibration, an auxiliary support device (50) is arranged in parallel at the center of the base and the center of the support table, and the auxiliary support device is provided with a spline joint (60) connected with the base through a cross joint (51); an upper connection base (80) connected to the support table via a cross joint (53) and a second universal joint (84) of a rotation mechanism (85); a ball spline joint (70) which is connected between the spline joint and the upper connection base so as to be telescopic and slidable; a connection intermediate member (83) fixed to the lower part of the upper connection base and positioned between the base and the support table; and an air spring (90) having both ends fixed between the connection intermediate member and the base.

This application discloses a feeding device for a coagulation analyzer, comprising: a mounting cavity, a reagent dispensing head, a dust cover, a spring assembly, a through hole, a test tube rack, a lifting mechanism, a lifting block, and a lever amplification mechanism, all disposed within the coagulation analyzer. When the lifting mechanism drives the test tube rack to rise, the lifting block contacts and pushes the second end of the lever arm upward. The lever arm rotates around its fulcrum axis, causing the first end to move downward and abut against the inner wall of the mounting cavity. Simultaneously, the second end lifts the dust cover, overcoming the preload of the spring assembly and allowing the outlet end of the reagent dispensing head to pass through the through hole. This invention amplifies the lifting force of the lifting block through the lever amplification mechanism, enabling a smaller lifting force to overcome the preload of the spring assembly on the dust cover. This significantly reduces the driving force required for the electric push rod, thereby reducing the system load. The rotational movement of the lever arm is smoother than direct pushing, effectively reducing impact vibration and avoiding interference with the reagent dispensing head and sample test tubes.

The invention discloses a demolding mechanism for centrifugal casting. The demolding mechanism is characterized in that a lower mold comprises an outer mold part and an inner mold part which are arranged in a split mode; the inner die part comprises a lower die mounting base plate and an inner die mounted on the lower die mounting base plate; the demolding mechanism is used for automatically demolding between the iron core and the inner mold when the lower mold and the lower mold fixing seat are reset, and comprises a floating transition plate arranged between the outer mold part and the inner mold part in a floating manner; the other ends of the ejector rods penetrate through the inner die part and the lower die fixing seat; and the bosses are arranged at one ends of the ejector rods. The lower mold is arranged in a split mode and is divided into the outer mold part and the inner mold part, so that outer mold demolding and inner mold demolding are achieved during demolding, secondary demolding is formed between the iron core and the lower mold, driving force needed during demolding is reduced, meanwhile, the phenomenon that the iron core is galled due to powerful demolding is avoided, and the demolding quality is improved. The problem of inconvenient demolding is solved, and meanwhile the iron core casting quality is ensured.

The present invention discloses an upper load-bearing lifting device, including a lifting guide rail, a hanging rail, a lifting bearing assembly, a lifting auxiliary block, a lifting transmission assembly, and a driving component; the lifting transmission assembly includes a first connecting rod connected to the driving component, a rotating triangle plate connected to the first connecting rod, a latch for fixing the rotating triangle plate to the hanging rail, and a second connecting rod connected to the rotating triangle plate, and the other end of the second connecting rod is connected to the lifting bearing assembly; the lifting bearing assembly includes a first bearing seat and a second bearing seat arranged on both sides of the hanging rail, and a connecting shaft connecting the first bearing seat and the second bearing seat; the lifting auxiliary block is provided with an inclined groove, and the first bearing seat can be driven to slide along the inclined groove to drive the hanging rail to move. Correspondingly, the present invention also discloses a sliding window. The implementation of the present invention can improve the sealing of the sliding window and reduce the thickness of the window sash.

The utility model relates to the field of honing processing equipment, in particular to a honing machine driving device which comprises a machine frame, a rotating transmission box is installed on the machine frame, a honing machine main shaft is installed at the output end of the rotating transmission box, and the rotating transmission box is connected with the machine frame in a sliding mode. A first driving module used for driving the transmission module to move on the rack and a second driving module used for providing power for the rotary transmission box are arranged at the end of the rack, and the first driving module and the second driving module are matched to provide power for the rotary transmission box and drive the rotary transmission box to reciprocate on the rack at the same time. Compared with an existing honing machine, the honing machine has the advantages that driving force needed by the main shaft of the honing machine in the displacement process is reduced through improvement of the driving device under the condition that the power of the honing machine is not affected, meanwhile, abrasion of equipment in the operation process is reduced, and the service life of the equipment is prolonged.

The utility model relates to the technical field of wrapping machines, in particular to a tape leading and placing wrapping machine which comprises a machine table, a main shaft, a wrapping shaft, a tape guide plate, a plurality of tape guide rollers, a fixing sleeve, a sliding sleeve, a tape reel, a sliding seat, a tension mechanism, a locking piece, a wrapping rotation driving mechanism, a wrapping seat, a leading wheel set, a leading rotation driving mechanism, a wrapping arm and a wrapping guide wheel. A wire passing hole is formed in the axial direction of the main shaft, the wrapping shaft is rotationally connected with the fixing sleeve, a belt passing hole is formed in the axial direction of the wrapping shaft, a belt inlet of the belt passing hole is rotationally connected with a belt inlet wheel, and a belt outlet of the belt passing hole is rotationally connected with a belt outlet wheel. The wrapping head and the tape releasing structure are located at the two ends of the wrapping shaft respectively and are of a split type design, the structures of the wrapping head and the tape releasing structure can be simplified, wrapping tape roll materials on a tape reel can be replaced conveniently, the problem that loads on the wrapping shaft are excessively concentrated on the local part is solved, the needed driving force for driving the wrapping shaft to rotate is reduced, and the wrapping efficiency is improved. Therefore, the rotation of the wrapping shaft is more stable, and the wrapping quality is good.

The invention relates to the technical field of picking operators, and in particular to a hybrid stable platform mechanism with complete motion decoupling, comprising a planar low-pair four-bar mechanism and a planar five-bar mechanism; the planar low-pair four-bar mechanism is composed of a rotating pair five, a rotating pair six, a rotating pair seven and a rotating pair eight whose axes are parallel to each other and connected in series in sequence; the planar five-bar mechanism is composed of a moving pair one, a rotating pair one, a rotating pair two, a rotating pair three and a rotating pair four connected in series in sequence; the base point of the hybrid stable platform mechanism has a one-dimensional movement amount compensation along the moving direction of the moving pair one, and two rotation amount compensations around the axes of the rotating pair one and the rotating pair five, wherein the planar five-bar mechanism can simultaneously control the compensation of the one-dimensional movement amount of the base point of the output moving platform along the moving direction of the moving pair one, and the compensation amount of rotation around the axis of the rotating pair one, thereby reducing the cumulative error of the compensation amount, improving the accuracy of position compensation control, and reducing the driving force required for position compensation changes, and the motion is fully decoupled.

The utility model discloses a height difference torque vector distribution device which comprises a differential mechanism, a left half shaft is connected to one end of the differential mechanism, and a right half shaft is connected to the other end of the differential mechanism; a motor is arranged on one side of the left half shaft, a first-stage speed reduction assembly is arranged on the motor, a third-stage speed reduction assembly is arranged on the left half shaft, and the third-stage speed reduction assembly is in transmission connection with the first-stage speed reduction assembly through a second-stage speed reduction assembly; the three-stage speed reduction assembly transmits received power to the planetary gear assembly, and a first gear ring and a second gear ring on the planetary gear assembly transmit the power to a shell and a left half shaft of the differential mechanism respectively. The beneficial effects of the utility model are mainly reflected in that the arrangement has a torque distribution function, and gives consideration to the energy consumption problem and driving experience in yaw dynamics control; and the energy consumption problem and the driving experience in yaw dynamics control are considered.

The invention discloses a variable fulcrum type transfer device, and belongs to the technical field of projectile body carrying, the variable fulcrum type transfer device comprises a transfer trolley, a supporting stand column, a lever component, a variable fulcrum mechanism and a driving mechanism, the bottom of the supporting stand column is connected with the transfer trolley, and the top of the supporting stand column is hinged to the lever component. The weight of the heavy object is converted into rolling friction force through the wheels at the bottom of the transfer vehicle, and the driving force of operators during transfer is reduced; through the arrangement of the variable fulcrum structure, the driving force for hoisting the heavy object is further greatly weakened, and the driving mechanism is arranged for the variable fulcrum structure, so that the arrangement of the variable fulcrum structure does not influence the up-and-down rotary motion of the lever component and the hoisting of the heavy object, and the driving mechanism is simple to control and can be operated only by pulling a driving rope. The variable fulcrum type transfer device is easy to operate and control, driving force of operators during transfer is greatly reduced, physical strength is greatly saved, and transfer can be achieved only by one person.

A method for preparing high-strength, high-elongation seamless magnesium alloy tubes and its application are disclosed, belonging to the field of magnesium alloy technology. The preparation method includes the following steps: material preparation—melting—preparation of alloy billet—pre-extrusion—piercing needle extrusion—double-stage aging heat treatment—annealing heat treatment, to obtain high-strength, high-elongation Mg-Zn-Nd-Y-Zr seamless magnesium alloy tubes; and the application of high-strength, high-elongation Mg-Zn-Nd-Y-Zr seamless magnesium alloy tubes prepared by the above method in the preparation of oxygen storage cylinders is also disclosed. This invention adopts a micro-alloying design, introducing trace amounts of rare earth elements Y and Nd into ordinary Mg-Zn-Zr alloys. Through the melt purification of rare earth elements Y and Nd, the synergistic strengthening and refining effect of forming dispersed LPSO with Zn elements, high-quality ingots are prepared, thereby realizing the forming of seamless magnesium alloy tubes. This solves the problem of extrusion bar head bending during traditional extrusion and improves material utilization.

The utility model discloses plunger assembling equipment which comprises a plunger rod clamping assembly, a positioning assembly, a first driving assembly and a flattening assembly. The positioning assembly is arranged on one side of the plunger rod clamping assembly; the flattening assembly comprises two pressing blocks, the two pressing blocks are each provided with a guide groove, the two guide grooves are oppositely and obliquely formed, a guide rod is arranged in each guide groove, a second driving assembly is arranged on one side of each guide rod, and the two guide rods are both connected with the second driving assembly. The two guide rods are driven by the second driving assembly to move along the guide grooves, so that the two pressing blocks are relatively close to or away from each other, and one end of the plunger rod is flattened. The plunger rod, the spring and the shell can be automatically assembled together, automation is achieved, the working efficiency is improved, and the consistency of products is improved. The guide groove obliquely formed in the pressing block can increase the clamping force of the pressing block, the solid iron rod can be flattened through small force, and driving force is saved.

This invention provides a heat treatment process for the weld seam of a wind turbine tower frame, relating to the field of metal material heat treatment technology, including the following steps: S1: Pre-treatment of the fillet weld seam area of ​​the wind turbine tower frame; S2: Gradient heating treatment at the same heating rate: first heating the fillet weld seam area to 280±20°C for a first heat preservation, then continuing heating to 450°C±20°C for a second heat preservation, and finally continuing heating to 580°C±20°C for a third heat preservation; S3: After the heat preservation is completed, the workpiece is cooled. This invention can not only eliminate welding residual stress and prevent the initiation of delayed cracks and fatigue cracks, but also significantly improve the microstructure of the weld metal, increasing its low-temperature impact toughness by more than double, thereby greatly improving the operational reliability of wind turbine towers and solving the problem of tower frame cracking in winter.