22results about How to "Avoid fatigue fracture" patented technology

The invention discloses a method, a device and equipment for correcting staggered holes of a flange of a wind turbine generator and a medium, and belongs to the technical field of wind power. The method for correcting the staggered holes of the flanges of the wind turbine generator comprises the steps that under the condition that the wind turbine generator is shut down and an impeller is locked, individual bolts in a plurality of bolts connecting a hub flange and a rotating shaft flange are detached, and the staggered hole directions of the hub flange and the rotating shaft flange are determined according to screw holes corresponding to the detached bolts; the remaining bolts for connecting the hub flange and the rotating shaft flange are loosened, and then preset fastening torque is applied for fastening; and the impeller is controlled to rotate according to the target direction corresponding to the hole staggering direction under the acting force of wind until the hole staggering distance between the hub flange and the screw hole corresponding to the disassembled bolt and the hole staggering distance between the rotating shaft flange and the screw hole corresponding to the disassembled bolt are smaller than the preset error distance. According to the embodiment of the invention, the safety of the wind turbine generator can be improved.

The invention relates to the technical field of medical instruments, and discloses a micro catheter. Wherein the microcatheter is sequentially provided with a lining tube and a high polymer material layer from inside to outside in the radial direction, a variable-diameter section is arranged at the far end of the microcatheter, a small-diameter section is arranged on one side of the far end of the variable-diameter section, and a large-diameter section is arranged on one side of the near end of the variable-diameter section; the high polymer material layer comprises a first hardness area, a second hardness area and a third hardness area which are sequentially arranged from the far end to the near end, the first hardness area is located on a part of the small-diameter section, the second hardness area is located on the other part of the small-diameter section, the variable-diameter section and a part of the large-diameter section, and the third hardness area is located on the other part of the large-diameter section; the hardness of the first hardness area is smaller than that of the second hardness area, the hardness of the second hardness area is smaller than that of the third hardness area, and smooth transition of different hardness materials of the large-diameter section and the small-diameter section of the microcatheter is achieved; the flexural rigidity of the reducing section is reduced, so that the change value of the flexural rigidity is reduced, the stress concentration is reduced, and the reliability of the microcatheter is improved.

The utility model relates to a transverse impedance multidirectional damping steel spring device which comprises a spring outer sleeve (1), a steel spring (5) and a spring inner sleeve, the spring inner sleeve comprises a spring inner sleeve cover (2) and a spring inner sleeve base (6), and a transverse impedance elastic body (3) for transverse limiting is arranged between the spring outer sleeve (1) and the spring inner sleeve base (6). Compared with the prior art, three-direction damping amplification is adopted, besides the main vibration isolation direction, the stability and vibration in the direction perpendicular to the main vibration isolation direction of the spring can be controlled, and meanwhile the problem that the spring is subjected to transverse shearing dynamic load to cause fatigue fracture and failure of the spring is solved; therefore, the transverse stability and reliability are improved, and the service life of parts is prolonged.

The application provides a jacquard needle wire protection structure, and relates to the field of jacquard needles.The jacquard needle body is characterized in that a plurality of FCC wires are connected to one side of the jacquard needle body, a protective net is arranged on the FCC wires, silica gel is filled between the FCC wires and the protective net, a tail wire clamp is arranged on the jacquard needle body, the tail wire clamp covers the protective net, silica gel is filled between the protective net and the tail wire clamp, a rolling belt is connected between the tail wire clamp and the protective net, and a pair of nuts are connected between the jacquard needle body and the tail wire clamp.The application has the following advantages: the structure forms a relatively closed and elastic stress isolation area at the ceramic piece end of the wire, effectively blocks the transmission of external equipment vibration to the wire, avoids internal stress concentration and fatigue fracture of the FCC wire due to resonance, and significantly improves the reliability and service life of the wire in a high-voltage (DC 200V) working environment.

The utility model discloses a self-locking grounding wire clamp for a steel rail, which relates to the technical field of grounding devices and comprises a rod body, a clamping block, a locking nut, a locking mechanism arranged on the clamping block and a locking sleeve matched with the locking mechanism. The locking sleeve is buckled on the outer side of the locking nut and matched with the clamping block, a rotation stopping boss used for clamping a wire nose is arranged on one side, close to the locking nut, of the clamping block, and the wire lug protection shell is arranged on the outer side of the connecting portion of the grounding cable and the wire nose in a covering mode. The clamping block and the locking sleeve are matched to form the wire lug protection shell, the wire lug is clamped on the inner side of the rotation stopping boss, it is ensured that the wire lug does not shake relatively when the nut is screwed or loosened, and fatigue fracture of a cable is avoided; the locking sleeve can completely cover the compression nut, and the nut cannot be loosened in any mode without unlocking, so that the reliability of the grounding wire clamp is greatly improved.

The utility model discloses an electrochemical device and electronic equipment, including electrode subassembly, including electrode main part and the first pole lug and the second pole lug of its same side extension, pole post subassembly is used for leading out the polarity of electrode main part, lower casing includes first casing and second casing and both connections form the step of intercommunication, wherein first casing is used for placing electrode main part, and second casing is used for placing pole lug, electrolyte and pole post subassembly, casing insulating part and pole post insulating part, and the connecting portion of pole lug and electrode main part is located at the step, upper cover plate is used for with lower casing connects and forms sealed structure, casing insulating part and pole post insulating part are located between pole post subassembly and lower casing, are used for the insulation of pole post subassembly and lower casing, the utility model discloses can effectively avoid the fatigue fracture of pole lug bending, and the step structure of setting reduces the heat of bending, improves energy density simultaneously.

The utility model relates to the field of vehicle accessories discloses rear -view mirror assembly and vehicle. Rear -view mirror assembly, include: support, support is used for with vehicle body is linked together, mirror shell, mirror shell is rotatable with support connection, and the lens is installed on mirror shell, wire harness, one end of wire harness is located in mirror shell, and the other end of wire harness is worn out mirror shell, and passes through support, clamp, clamp is linked with support, and clamp is arranged ring structure, and the ring of clamp is arranged on the outside of wire harness, and the circumferential side wall of clamp is equipped with through -going mouth to supply wire harness to go in and out clamp. Clamp mainly realizes fixed through the mode of ring and is wrapped wire harness, and the risk that will not produce like metal tablet compression joint such as concentrated extrusion, fundamentally eliminates the risk that wire harness is damaged because of compression. Meanwhile, the ring structure that clamp sets up and is equipped with through -going mouth on the circumferential side wall, and this structure design makes wire harness conveniently go in and out clamp, and need not powerful compression joint when assembling, reduces the risk of mechanical damage.

The utility model discloses an outdoor unit condenser mounting assembly relates to air conditioner outdoor unit condenser field, the utility model discloses a condenser main part, the below of condenser main part is with air conditioner outdoor unit box body swing joint through mounting assembly, the mounting assembly includes support work piece, installation slide rail, the support work piece is with connecting portion, the joint portion and is composed, two sets of support work piece mirror image installation in the bottom of condenser main part, the utility model discloses a mounting assembly, and the recess - convex block guide structure of installation slide rail and support work piece makes condenser main part along the predetermined path slip, replaces manual alignment bolt hole position operation, when condenser pushes in, and the joint piece of joint portion is under the slope of guiding inclined plate automatic import card slot under the action of slope, simultaneously, and unilateral self -tapping bolt is screwed in installation slide rail through the straight slot of joint portion, and the engagement of joint piece and card slot is combined and forms double -fixed, and the traditional multi -point bolt fastening is simplified as once push -in and single -point locking, and the repeated adjustment process is eliminated.

The utility model relates to the technical field of scroll compressors, in particular to a spring installation structure of a scroll compressor and the scroll compressor, the spring installation structure of the scroll compressor comprises a fixed disc assembly, and the top of the fixed disc assembly is provided with a fixed disc groove; the sealing assembly is arranged right above the groove of the fixed disc, and the sealing assembly can move in the vertical direction; the spring is arranged in the groove of the fixed disc; and the limiting part is arranged between the sealing assembly and the fixed disc groove, and when the sealing assembly moves downwards to a limit position, the limiting part enables a containing space capable of containing the spring to be formed between the fixed disc groove and the sealing assembly. According to the spring mounting structure of the scroll compressor and the scroll compressor, the problem that in an existing scroll compressor, a spring is prone to failure due to overlarge stress borne by the spring can be solved.

The utility model relates to water route structure technical field, and disclose a water route connecting structure for engine is suitable for the pipeline connection between EGR cooler and temperature regulator seat of high horse power natural gas engine, and provides cooling liquid flow passage, specifically includes first water pipe joint, second water pipe joint, connecting pipe, and the opening end of first water pipe joint and second water pipe joint all has the seat hole of centering arrangement, and the both ends of connecting pipe are connected with first water pipe joint and second water pipe joint respectively through seat hole. The utility model discloses through the interference fit of annular protrusion of sealing sleeve both ends and seat hole inner wall, and then through the hard contact occlusion of seat hole inner wall after the thermal expansion of steel pipe lining temperature, improves the stability of connection, and also can make up the elastic attenuation caused by sealing sleeve aging, thereby realizes double seal, prevents cooling liquid leakage, effectively improves the sealing property of engine water route connection, and convenient to dismount, is convenient for the overhauling and maintenance of later period.

The application discloses a floating type marking needle assembly, which comprises a floating needle head base, an electromagnetic valve, a needle cavity core, a printing needle, a needle outlet air inlet connector, a needle cavity sleeve and a needle return air inlet connector. The electromagnetic valve is fixed on the floating needle head base. The needle cavity core is vertically inserted into a vertical inner cavity on the bottom surface of the floating needle head base, and the printing needle is vertically inserted into the inner cavity of the needle cavity core. The upper part of the printing needle separates the inner cavity of the needle cavity core into an upper air cavity and a lower air cavity which are isolated from each other. The needle cavity sleeve is sleeved outside the needle cavity core, and the needle cavity sleeve is connected with the floating needle head base and makes the upper end of the needle cavity core tightly abut on the top surface of the vertical inner cavity. The space between the needle cavity sleeve and the needle cavity core forms a gas storage cavity, the lower air cavity is communicated with the gas storage cavity, and the needle return air inlet connector is communicated with the gas storage cavity. The floating type marking needle assembly has the technical advantages of good flexibility, more accurate control for each needle, high efficiency, energy saving, small gas consumption and small noise.

This utility model discloses a hook assembly and lifting equipment based on anti-disengagement of steel ingot molds, relating to the field of steel ingot mold lifting. The key technical points are: it includes an installation part and an elastic telescopic part located below the installation part. A hook is installed on the telescopic part of the elastic telescopic part. The elastic telescopic part has a high-strength spring and a damper. The effect is that when the hook lifts the steel ingot mold, the shaking and impact forces generated during the lifting process due to starting and stopping inertia and running vibrations are first transmitted to the elastic telescopic part. The high-strength spring in the elastic telescopic part absorbs some energy through its own elastic deformation, reducing the impact force. At the same time, the damper plays a buffering role, effectively dissipating the remaining energy, reducing the vibration amplitude and frequency, thereby reducing the periodic alternating load borne by the connection between the hook and the steel ingot mold, avoiding hook fatigue fracture, preventing relative displacement or disengagement between the steel ingot mold and the hook, and ensuring lifting safety.

The invention provides a preparation method of a temperature and pressure integrated sensor, and the method comprises the steps: providing a temperature sensing module which comprises a temperature sensing probe, and the temperature sensing probe comprises a first pin and a second pin which are sufficient in length; performing film coating treatment on the first pin and the second pin; the first pin and the second pin are packaged to form an L-shaped back-to-back structure, and each of the first pin and the second pin comprises a first part, a second part and a bending part connected with the first part and the second part; a base is provided, the base comprises a first protruding column, a second protruding column and a plurality of PIN penetrating holes, the first protruding column, the second protruding column and the PIN penetrating holes penetrate through the base, and the first protruding column and the second protruding column are electrically connected with the second portion of the first pin and the second portion of the second pin respectively; and providing a pressure sensing module which is formed by silk-screen and sintering on the base and is electrically connected with the plurality of PIN through holes. And the function failure of the temperature and pressure integrated sensor caused by the failure of additional welding spots can be fundamentally avoided.

The application discloses a compressor assembly and an air conditioner. The compressor assembly comprises a compressor, a pipeline connected with the compressor, a buffer assembly and a mounting seat. The buffer assembly is connected with the mounting seat and the compressor and comprises an elastic member. The elastic member is used for buffering the torsion of the compressor around the axis of the compressor. When the buffer assembly is used for buffering the torsion generated by the shutdown of the compressor, the elastic member can generate a reaction force to buffer the torsion of the compressor, thereby, it is beneficial to avoid the swing of the pipeline (the suction pipe and / or the exhaust pipe) connected with the compressor, and further, it is beneficial to avoid the problem that the stress of the pipeline exceeds the standard or even the pipeline is broken due to fatigue. When the buffer assembly is used for buffering the torsion generated by the start of the compressor, the working principle and the role of the buffer assembly are the same as the foregoing, and details are not described herein.

The utility model discloses an anti -deformation's air cooler protection net shell support relates to protection net shell support technical field, including the fixed support of fixed on the wall, the fixed support front side bottom is equipped with the main support, and the air cooler is located the inside top of main support, the fixed support front side with the both sides of main support all are connected through anti -deformation subassembly, is used for reducing the impact force of external force impact main support, plays the buffer protection, the inside of main support is equipped with two adjusting assembly, is used for supporting the air cooler of different size size, the anti -deformation subassembly includes the hinge seat. The utility model passes through the vibration energy of first damping spring and second damping spring self -deformation absorption, significantly reduces the impact force of external force impact the utility model, realizes the buffer protection, avoids the loosening of continuous vibration, deformation or fatigue fracture, thereby guarantees the durability and safety of structure simultaneously, has optimized the stability of air cooler operation.

The application discloses a high-temperature environment wind power torsion-resistant flexible cable and belongs to the technical field of cables.The high-temperature environment wind power torsion-resistant flexible cable comprises an outer sheath, a protection mechanism arranged in the outer sheath, and a buffer mechanism arranged in the protection mechanism.The buffer mechanism comprises a mounting component, buffer elastic blocks and a buffer filling material.The mounting component is arranged in the outer sheath, the buffer elastic blocks are arranged in multiple numbers, the multiple buffer elastic blocks are arranged in the mounting component, the multiple buffer elastic blocks are uniformly distributed, and the buffer filling material is arranged in the mounting component.The high-temperature environment wind power torsion-resistant flexible cable significantly improves the torsion fatigue life, avoids stress concentration, and converts the concentrated torsion force applied from the outside into uniform and orderly deformation and energy dissipation of internal components through the synergistic effect of the buffer elastic blocks and the filling material, thereby avoiding local overload, enabling the cable to withstand long-term alternating torsion cycles that are much higher than those of a conventional structure, and greatly prolonging the service life.

The utility model relates to the technical field of inductors, in particular to an inductor with high heat dissipation performance, which comprises a circuit board, a lower mounting rack, an upper mounting rack, a heat dissipation fin cover, a miniature electric fan, a shielding cover and an inductor body, the top of the circuit board is clamped with the lower mounting rack, and the top of the lower mounting rack is clamped with the upper mounting rack; a heat dissipation fin cover is clamped between the upper mounting frame and the lower mounting frame, a micro electric fan is arranged at the top of the upper mounting frame, a shielding cover is clamped on the inner side of the heat dissipation fin cover, and an inductor body is arranged in the shielding cover. According to the utility model, the dual modes of passive heat dissipation and active air cooling are realized through the synergistic effect of the heat dissipation fin cover and the micro electric fan; a limiting group consisting of a spring and a clamping ball is arranged in the clamping seat, and the clamping ball is embedded into a pin groove to form mechanical occlusion, so that the pin is prevented from loosening or falling off in a vibration environment; the pins are tightly matched with the hole sites of the circuit board, and the bottom end of the clamping seat is flush with the reinforcing guide columns, so that stress is dispersed, and stable contact between the pins and the circuit board is ensured.

This utility model relates to the field of steel metallurgical equipment technology, specifically disclosing a precise control device for the stroke of a hydraulic shear in a billet continuous casting machine. It includes a limiting component located on the upper shear blade seat and a triggering component located on the lower shear blade seat. The limiting component includes a first fixed plate, a limiting body, and a contact head. The first fixed plate is fixedly connected to the upper shear blade seat, the limiting body is mounted on the fixed plate and has an internal mounting cavity, and the contact head is slidably located within the mounting cavity and connected to the hydraulic shear control circuit via an electrical wire. This 45° suspended hydraulic shear limiting device has a simple structure, low cost, and is easy to manufacture. It can operate stably in harsh environments. The contact head relies on self-realignment to ensure reliable signal transmission and effectively avoids fatigue fracture of the piston rod fixing bolts caused by excessive shear stroke of the hydraulic cylinder, extending the service life of the hydraulic cylinder, reducing the frequency of spare parts replacement, saving costs, and reducing the labor intensity of employees.

The utility model discloses a door lock device of an oven. An oven door is hinged to an oven frame. The front end of the pull arm is hinged to the bottom of the box door through a first hinge shaft, and the rear end is provided with a long hole extending in the length direction. Reset springs are hooked on the long holes, and the first reset spring is fixed to a mounting ring at the bottom of the oven frame through a hook; the second reset spring is fixed to the rear side of the oven frame. The included angle alpha formed by the first reset spring and the second reset spring in the free state ranges from 20 degrees to 60 degrees. The mechanical balance in the opening and closing process of the box door is realized through the collaborative layout of the double reset springs and the linkage design of the draw arm long hole. The included angle of 20-60 degrees is formed between the first reset spring and the second reset spring, so that elastic moments are dynamically complemented, reliable locking when the box door is closed is guaranteed, and the door opening operation resistance is reduced. The long hole structure provides an adjustable anchor point for the spring hook, self-adaption to thermal expansion and cold contraction of the box body is achieved, the long-term use stability is improved, meanwhile, the assembly process is simplified, and part abrasion is reduced.

This invention discloses a telescopic fitting for sliding support and current diversion of a busbar, belonging to the field of busbar connector technology. It is assembled between a busbar and an equipment terminal and includes a busbar clamp, an equipment clamp, a support rod assembly, a steering block, and telescopic wires. The busbar clamp is fixedly installed at the end of the busbar, and the equipment clamp is fixedly installed at the end of the equipment terminal. The two ends of multiple telescopic wires are respectively fixedly installed on the busbar clamp and the equipment clamp. The outer end of the equipment clamp is rotatably assembled to one end of the steering block. The support rod assembly is movable and assembled inside the busbar. This invention, through the design of separating mechanical support and electrical current diversion, avoids the phenomenon of excessive current in the support rod causing overheating under special environments due to skin effect, electromagnetic interference, and other factors. Simultaneously, all metal parts of the telescopic fitting can be connected to the charged body, avoiding floating potential and preventing floating discharge under high voltage.

This invention relates to the field of construction waste recycling technology, specifically to a multi-stage anti-clogging vibrating screen for asphalt pavement milling materials. The screen includes a screen box containing a first screening component, a limiting component, and a clearing mechanism. The first screening component includes multiple cantilever screen bars. The limiting component includes a limiting plate with multiple limiting grooves. A clearing mechanism is located beside the limiting component, comprising a drive component and rake teeth. An air outlet is located beside the clearing mechanism. The rake teeth insert into the gaps between the multiple cantilever screen bars to break the mechanical jamming of the material. Simultaneously, the directional airflow from the air outlet continuously cools the core area of ​​frictional heat generation between the rake teeth and the limiting grooves, strictly controlling the contact surface temperature below the asphalt softening point. This physical breaking combined with temperature control fundamentally eliminates the problem of screen clogging caused by asphalt melting and stringing due to frictional heat.