162results about How to "Simplified quantity" patented technology

The invention relates to the technical field of dolls, and provides a head bionic motion structure of a bionic animal doll, the head bionic motion structure comprises a head shell, ear components, a mouth component and eye components, the head shell is provided with windows for displaying the ear components, the mouth component and the eye components, and the head bionic motion structure is arranged in the head shell. The head bionic motion structure comprises a shell, a first plane and a second plane are symmetrically arranged on the outer surface of the shell, a driving assembly is arranged in the shell, and a first transmission assembly and a second transmission assembly are arranged on at least one face of the first plane and / or the second plane; the first transmission component is flattened and is used for driving the ear component and the mouth component to move, and the second transmission component is used for driving the eye component to move; and the driving assembly is used for driving the first transmission assembly and / or the second transmission assembly to move. According to the bionic structure, the integration and miniaturization of the bionic structure are improved, and the space occupation volume is greatly saved.

The utility model relates to the technical field of nitriding furnaces, in particular to an inlet air cooling device of an ultra-deep well type nitriding furnace, which comprises a fan connected to the nitriding furnace and used for cooling inlet air, a butterfly valve for adjusting the inlet air rate is additionally arranged on the fan, and the pipeline joints of the butterfly valve, the nitriding furnace and the fan are all arranged to be of flange structures. A plurality of arc-shaped rings which can stretch out and draw back in the arc direction are installed on the connecting face through bolts, the arc-shaped rings form a closed ring body structure after being stretched, and the outer portion of the ring body structure is sleeved with a sealing ring used for sealing and isolation. The number of parts required for assembly is reduced, and meanwhile, a stable supporting effect on the sealing ring is achieved, so that all joint surfaces of the nitriding furnace are tighter, and air cooling is smooth and free of leakage; by additionally arranging the rotatable L-shaped limiting plate, additional locking and supporting effects are provided for the joint face, and the sealing performance of the flange joint is enhanced.

The invention discloses a high-strength symmetrical structure novel differential mechanism which comprises an outer shell, a plurality of first tooth embedded teeth, a plurality of second tooth embedded teeth and a plurality of lubricating oil holes, the outer shell is of a split symmetrical structure, a mounting cavity is formed in the outer shell after the outer shell is combined, and the first tooth embedded teeth are arranged on the spigot end face in the outer shell; the inner shell is assembled in the mounting cavity, the inner shell is of a hollow annular structure, a plurality of planetary shaft holes are symmetrically formed in the annular surface of the inner shell, second jaw teeth used for being matched with the first jaw teeth are arranged on the end faces of the two sides of the inner shell, and an inner cavity of the inner shell is of a spherical structure so as to be used for being matched with the appearance structure of the planetary gear; the planet shaft is inserted into a planet shaft hole in the inner shell; the elastic pin is used for fixing the planet shaft on the inner shell; the planetary gears are connected to the planetary shaft and located in the inner cavity of the spherical structure; and the plurality of half axle gears are assembled in the mounting cavity and are matched with the planetary gears.

The utility model provides an automobile combination switch structure which comprises a base, a gear handle assembly is connected to the base, a handle rod is arranged at one end of the gear handle assembly, a first magnet is fixedly arranged on the handle rod, a circuit board assembly is arranged at the position, located above the handle rod, in the base, and a second magnet is fixedly arranged on the circuit board assembly. And a group of first Hall sensors are arranged on the circuit board assembly corresponding to the position above the first magnet. The utility model aims to provide an automobile combination switch structure, and solves the problems that an existing automobile combination switch assembly with a Hall sensor is complex in structure and large in occupied internal space size of a product, and the number of parts is large.

The invention relates to the technical field of microbiology devices, in particular to a microalgae amplification culture device and a culture method.The microalgae amplification culture device comprises a culture box body and a cover plate, a reactor body used for culturing microalgae is fixedly installed in the culture box body, and a cleaning assembly used for cleaning the inner wall of the reactor body is arranged outside the reactor body; an adjusting assembly and a positioning assembly are arranged outside the reactor body, the interior of the reactor body is subjected to water supply cleaning through the cleaning assembly, meanwhile, the adjusting assembly is connected with the cleaning assembly in cooperation with the arranged positioning assembly, the adjusting assembly provides upward or downward power for an annular cleaning brush in the cleaning assembly, and the cleaning effect is improved. An electric driving stirring rod is matched to drive an annular cleaning brush to rotate in the reactor main body, and the annular cleaning brush is in rotating contact with the interior of the reactor main body and reciprocates up and down to thoroughly clean algal microorganisms in the reactor main body, so that the effect of ensuring a microalgae culture environment is achieved.

The invention belongs to the technical field of unmanned aerial vehicle positioning, and particularly discloses an unmanned aerial vehicle target positioning system, which comprises an image acquisition module arranged at the bottom of an unmanned aerial vehicle and used for acquiring ground image information; the target identification module is used for identifying a target point in the ground image information; the coordinate conversion module is used for converting the GPS coordinates of the unmanned aerial vehicle into UTM coordinates; converting the projection coordinate of the target point into a geographic coordinate; the parameter calculation module is used for calculating a ground distance corresponding to a unit pixel; and based on the yaw angle of the unmanned aerial vehicle and the position of the target pixel point relative to the image center point, calculating the coordinate of the target point in the projection coordinate system by using the ground distance corresponding to the unit pixel. According to the method, the types and the number of sensors are simplified, only a basic visible light camera needs to be carried, the complexity and the cost of the system are reduced, image data can be rapidly processed through an optimization algorithm and an efficient data processing technology, and rapid recognition and positioning of a target are achieved.

The invention aims to provide a pressure accumulation type sprayer which is easy to recycle materials and provides a pressure accumulation type sprayer capable of improving resource efficiency, so that a contribution is made to a sustainable development target finally. A pressure accumulation type sprayer (X) is composed of components made of polyolefin, and each component comprises: a nozzle part (F); a base section (B) having a sub-cylinder section (B) above and a main cylinder section (B1) below, the base section (B) having a first passage section (P1) leading from the container to the main cylinder section (B1), a second passage section (P2) leading from the main cylinder section (B1) to the sub-cylinder section (B), and a third passage section (P3) leading from the sub-cylinder section (B) to the nozzle section; a piston part which slides in the master cylinder part (B1); a wrench part which rotates around a supporting shaft part (BA) formed on the side surface of the base part (B) in a protruding manner and enables the piston part to slide backwards; a primary valve (FV) provided in the first passage section (P1); a secondary valve structure (A) attached to the sub-cylinder section; an introduction tube (H) through which the liquid in the container is sucked and through which the liquid passes; a cover section (C) that covers the base section (B) from above; a lid (G) to be attached to the container; and a gasket that seals the lid and the base (B).

The present invention relates to the technical field of drilling impactors, and in particular to a pneumatic down-the-hole impactor, comprising a cylinder body, an impact piston and a drill body, and also comprising a spline sleeve attached to the end of the cylinder body, the drill body being matched with the spline sleeve in a manner of passing through the inside of the spline sleeve and forming a spline connection; the pneumatic down-the-hole impactor comprises a bottom-hole slag removal and purge air path, which comprises an internal drill air passage arranged on the drill body, and a transition air passage is formed by means of a spline gap at a spline connection between the drill body and the spline sleeve, so that there is no need or reduction in opening holes on the piston and / or cylinder body, thereby extremely ensuring the structural strength of the piston and / or cylinder body and improving the service life of the impactor as a whole. Moreover, since the transition air passage is formed by means of an existing structure, this also virtually reduces the processing difficulty and manufacturing cost.

The invention discloses an X-ray beam limiting device and an X-ray imaging system.The X-ray beam limiting device comprises a shell, a first motor, a second motor, a first ray shielding assembly, a second ray shielding assembly and a ray shielding sleeve, and the first ray shielding assembly, the second ray shielding assembly and the ray shielding sleeve are sequentially arranged in the X-ray emitting direction; the first ray shielding assembly and the second ray shielding assembly can adjust an irradiation field under the action of the first motor and the second motor, and the ray shielding sleeve can block X-ray scattering; the X-ray beam limiting device can prevent the edge of an irradiation field from being blurred, and can also prevent scattered X-rays from influencing other areas of a human body except for irradiation; and doctors and nurses in close-range operation can be effectively protected.

The utility model discloses a kind of food crushers, including body, crushing bin and inlet-outlet structure, further include: turntable, set in crushing bin;Knife groove, the inside of the turntable is formed with knife groove and penetrates;Knife disc, by joint structure installation in knife groove.In the present application, first, double-end joint structure of axial and circumferential limit is used between knife disc and bracket, and unlocking is completed by exposed handle, without any auxiliary tool, knife disc replacement or cleaning can be completed, to reach the purpose of convenient cleaning, second, oval knife disc with its long axis periodicity sweeps feed inlet, forms shear and shielding alternation, to improve crushing efficiency and fluency, finally, lock point is hidden in the narrowest tail end of knife disc and extends to center opposite side, make joint structure completely avoid shear area, while completing axial close and circumferential positioning when knife disc is pushed into shaft sleeve, both can realize the full use of crushing space, and can simplify the number of parts and assembly step.

The invention relates to the technical field of hydrogen storage devices, in particular to a hydrogen storage tank with a stirring function and a hydrogen storage device. The two gas guide pipes are used in the hydrogen storage tank, and overall stirring of hydrogen storage alloy particles is achieved. Through threaded connection between the threaded rod and the fixed partition plate, the hydrogen storage alloy particles in the threaded rod are stirred up and down by the gas guide pipe and the stirring blade, and stirring plates do not need to be mounted on different layers, so that the space can be saved, the design of the hydrogen storage tank is more compact, and the complexity of the internal structure is reduced; meanwhile, maintenance and replacement are easier, the number of stirring plates needing to be maintained is reduced, and the maintenance cost and complexity are reduced. And through cooperative use of a driving bevel gear and a driven bevel gear, a gas guide pipe and a stirring blade rotate and stir while moving up and down along with a threaded rod, so that the stirring effect is further improved, the hydrogen can fully react with the hydrogen storage alloy particles, and the storage amount of the hydrogen is increased.

The utility model relates to the field of new energy automobiles, and provides a power redundancy control system and a vehicle, and the system comprises a DCDC direct current converter, a power distribution module, a plurality of key loads, and a low-voltage power supply module. The power distribution module comprises a first power distribution unit and a second power distribution unit which can supply power to each key load at the same time and are electrically isolated from each other. The DCDC converter is connected with the first power distribution unit; the low-voltage power supply module is connected with the second power distribution unit. According to the utility model, the DCDC converter, the power distribution module, the low-voltage power supply module and the power supply loop form the power supply redundancy control system of the whole vehicle, so that at least one power supply loop connected to a key load can work normally; the utility model aims to provide a power supply redundancy supply scheme with a high function safety level requirement for a plurality of key loads. The number of parts is reduced, the manufacturing cost of the whole vehicle is reduced, and meanwhile the reliability of a power supply redundancy supply scheme is improved.

This utility model provides a cleaning device, including: a body, a lifting mechanism, a cleaning mechanism, and a shielding component; the lifting mechanism is connected to the body; the cleaning mechanism is connected to the lifting mechanism and moves up and down relative to the body under the drive of the lifting mechanism; the cleaning mechanism includes a cleaning component; the shielding component is rotatably mounted on the cleaning mechanism and partially shields the outer periphery of the cleaning component, the shielding component having a first rotational position that isolates the cleaning component from the surface to be cleaned, and a second rotational position that allows the cleaning component to contact the surface to be cleaned; wherein, the lifting mechanism includes a driving component and a transmission mechanism, the transmission mechanism including a power input end and two power output ends, the driving component drives the two power output ends to move through the power input end, one of the two power output ends drives the cleaning mechanism to move up and down, and the other of the two power output ends drives the shielding component to rotate. This utility model can improve the problem of cleaning equipment easily causing carpet contamination during cleaning operations.

The utility model belongs to the technical field of injection equipment, particularly relates to an elastic component of an injector, and solves the problems that the structure is complicated, and the elastic component cannot adapt to injection barrels of various specifications. The elastic assembly of the injector comprises a damping ring which is arranged between a supporting piece and a syringe, is in a wave shape and is made of an elastic material, and the upper end of the damping ring is connected with the lower end of the supporting piece. The elastic assembly of the injector is simple in structure, capable of absorbing shock and capable of being matched with injection barrels of various specifications.

The application relates to the field of piezoelectric pumps, in particular to a micro-nano piezoelectric air pump with air inlet and outlet on the same surface, which comprises a rack mechanism, an oil tank, an engine, a battery assembly and a silencer which are sequentially installed on a rack body, a moving piece located outside the rack body, a shell piece arranged outside the oil tank, a control piece arranged on the top of the shell piece and a tool box installed on one side of the shell piece. The piezoelectric ceramic prepared by adopting the micro-nano process is combined with the laser welding assembly mode instead of the adhesive assembly mode, so that the reliability risk of the aging of the adhesive layer and the decrease of the bonding force in the high-temperature, high-humidity and low-temperature environment is avoided, the air tightness and long-term consistency between the layers are ensured, and the durability of the product under the harsh working conditions such as vibration and mechanical impact is remarkably improved. Thirdly, the air inlet, the air outlet and the air exhaust are completed on the same structure surface, the flow path layout and the number of parts are simplified, and the assembly complexity and the cost are reduced.

The invention discloses a high-efficiency spinning device for nylon weaving, which belongs to the field of textiles. By improving the original nylon spinning process and streamlining the number of equipment used in the original process, the overall failure rate of the device can be effectively reduced and the operation stability of the device can be improved under the premise of ensuring accurate control of the spinning length. When the last fixed-length spinning is ejected from a stacked spinning assembly, the spinning melt residue originally contained in the micropores of the stacked spinning assembly is carried out through the squeezing effect of the gas, effectively avoiding the possibility that the spinning melt residue solidifies and clogs in the stacked spinning assembly, resulting in the need to clean the micropores of the stacked spinning assembly in advance before each start-up. The in-situ treatment method for the spinning melt residue in the micropores of the stacked spinning assembly does not require the stacked spinning assembly to be disassembled and cleaned, and can effectively improve the operation progress.

The application provides a support and electronic equipment protective shell, the support comprises a support body, a pressurized nozzle, a sealing ring, a fixing part and a compression nut, a containing cavity for containing liquid is formed in the support body, and the support body is provided with a mounting hole in communication with the containing cavity; the pressurized nozzle comprises a nozzle body and a straw extending from the nozzle body, the pressurized nozzle is detachably arranged in the mounting hole, and the straw extends into the containing cavity through the mounting hole; the sealing ring is arranged at the periphery of the mounting hole; the fixing part is fixedly connected to the support body; the compression nut is threadedly connected with the fixing part, and the compression nut applies a compression force to the nozzle body in the direction of the sealing ring, so that the nozzle body is pressed against the sealing ring, the sealing of the mounting hole and the fixation of the pressurized nozzle are realized. The support of the application cooperatively completes the two functions of sealing and fixation in the same threaded assembly action, simplifies the number of parts and the assembly process, and improves the reliability of the sealing.

The invention discloses a method for improving current sampling precision through shunt temperature estimation, and the method comprises the following steps: S1, building a second-order equivalent thermal impedance model through the cavity temperature and loss power of a shunt, and obtaining an actual temperature value of the shunt; s2, obtaining actual resistance values at different resistance temperatures according to a conversion formula of the resistance values at different temperatures; and S3, converting a voltage signal actually acquired by the DSP into an actual current value. The method has the advantages of being simple in principle, convenient to operate, high in metering precision and the like, current precision of the shunt can be improved through thermal simulation and test correction, dependence on divider resistance precision of a hardware sampling circuit is reduced, the number of components in the hardware sampling circuit is reduced, hardware cost is saved, and PCB space is reduced.

The utility model relates to the technical field of locomotive lamps, in particular to a headlamp height adjusting structure which comprises a position lamp, a headlamp, an installation support and an adjusting bolt, a rotating pin shaft is arranged at the upper end of the headlamp, and the front end of the installation support is buckled on the back face of the position lamp in a buckled mode and is detachably and fixedly connected with the position lamp. The position lamp is in an annular shape, the middle of the position lamp is provided with a light through hole allowing light of the headlamp to penetrate through, the adjusting bolt is rotationally arranged on the installation support in a penetrating mode, and the end of the adjusting bolt is in threaded connection fit with the lower end of the headlamp. Therefore, the number of parts is reduced, the machining process is simplified, the assembling efficiency is effectively improved, and the whole structure of the headlamp is tight in connection, high in structural strength and long in service life.

This application relates to a load power failure protection system, comprising: a circuit (110) having a power receiving port (110) and a plurality of load ports (120, 130, 140); one or more sensors (A) disposed on the circuit for detecting real-time values ​​related to electrical parameters at each load port; a controller (200) associated with the one or more sensors to receive the real-time values ​​measured by each sensor and to generate a cut-off signal when the real-time values ​​meet preset conditions; and one or more switches (C) associated with the controller and switching to a cut-off state in response to the cut-off signal to cut off the power supply to the associated load ports, wherein the associated load port of each switch is one or more of the plurality of load ports, and each load port is the associated load port of at least one of the one or more switches. This application also relates to a power distribution unit including this system.

This invention belongs to the field of sensor technology, specifically relating to an eddy current sensor system, including a signal conditioning circuit, a coaxial cable, and a probe-end circuit. The signal conditioning circuit includes a power amplification module for superimposing a DC bias voltage with an AC excitation signal to generate a mixed signal, which is then transmitted to the probe-end circuit via the coaxial cable. The probe-end circuit includes a series capacitor, a filter circuit, and a follower. The series capacitor couples an AC excitation signal from the mixed signal to drive the probe coil. The filter circuit extracts a DC bias voltage from the mixed signal to power the follower. The follower receives the impedance change signal of the probe coil and transmits it back to the signal conditioning circuit via the coaxial cable. This invention eliminates the influence of the distributed parameters of the coaxial cable on the probe characteristics. The length of the coaxial cable can be arbitrarily extended or shortened without re-matching and calibration. It also eliminates the output drift problem caused by bending of the coaxial cable and simplifies the system wiring complexity.

The present disclosure relates to a steering device and a vehicle, the steering device comprising a base body and a steering mechanism, the steering mechanism comprising a sliding seat and a steering wheel assembly rotatably connected to the sliding seat, the steering wheel assembly having a tracking piece, the sliding seat being slidably connected to the base body, wherein the base body has a first track, and the tracking piece is slidably connected to the first track to drive the steering wheel assembly to rotate relative to the sliding seat. The steering device and the vehicle of the present disclosure have a more compact structure, use fewer components, occupy less space, and can significantly improve the running stability and accuracy of the steering wheel assembly during trajectory change. In addition, the steering device can be adapted to vehicles with lower instrument panels, thereby greatly improving the utilization rate of the cockpit space and the user experience.

The present invention relates to a shoulder dislocation repair system, comprising: a working channel device for delivering a graft bone block from the front side of the shoulder joint, a guiding device for establishing a glenoid bone tunnel from the back to the front, and a fixing device for fixing the graft bone block in front of the glenoid. The shoulder dislocation repair system of the present invention simplifies the number of surgical tools and optimizes the structural design of surgical tools, thereby optimizing the surgical process and improving surgical efficiency; the shoulder dislocation repair system can use a posterior approach to establish the glenoid bone marrow, avoiding the dense areas of the arteries, veins, nervous system, and lymphatic system on the front side of the shoulder joint, so that the wound is small, the damage to the human body is small, the requirements for doctors are low, the surgical risk is small, and it is easy to promote; the use of suture steel plate pressure fixation can avoid the complications related to screw fixation; the bone removal site is changed to the ilium, which does not change the original physiological structure of the human body and will not cause unknown risks.

The present invention discloses a multi-color fully automatic rotary mold core automatic assembly welding mechanism, including an upper turntable, a lower turntable, a turntable auxiliary mechanism, a first rotary mold core, a second rotary mold core, a third rotary mold core, a first fixed mold core, a second fixed mold core, an oil cylinder, a suction and blowing device, a mold induction switch, a turntable signal receiver, a push rod, a main gun nozzle, a top gun nozzle, a side gun nozzle, a buckle and a sliding push block mechanism. The multi-color in-mold assembly welding mechanism of the present invention has a precise structure, a short molding cycle, convenient installation, low cost, and strong practicality, and is suitable for the production of most similar products. This mechanism breaks the traditional constraints, and completely subverts the traditional multi-material beer-in-mold and external welding process through in-mold assembly and welding integrated molding. The product has a high yield, no obvious marks on the connection parts, perfect appearance, strong sealing, and excellent structural strength. Compared with traditional processes, the number of mold parts is simplified and the overall molding cycle of the product is shortened.

The utility model discloses a tail plug mobile power supply, which comprises a shell, an upper shell assembly is fixed at the top of the shell, the upper shell assembly comprises an accommodating groove and an elastic support arm arranged at the bottom of the accommodating groove, a turnover plug is rotatably connected in the accommodating groove, and the turnover plug is connected with the elastic support arm. The overturning plug is provided with a first clamping part, a second clamping part and an electric plugging end, when the electric plugging end is overturned to the outside of the accommodating groove, the first clamping part is connected with the elastic support arm in a clamping manner, and when the electric plugging end is overturned to the inside of the accommodating groove, the second clamping part is connected with the elastic support arm in a clamping manner. According to the utility model, the electric plugging end can be extended and hidden, and complicated hinges and limitation are not needed, so that the number of components is reduced, the product cost is reduced, and the electric connector is easy to manufacture and assemble.

The utility model relates to the technical field of handle opening, in particular to a vehicle door lock switch mounting structure, which is characterized by comprising a carrier, a switch body and a base, and the carrier is provided with a connecting part; the switch body is provided with a button triggering part; the base is provided with an installation groove, the switch body is located in the installation groove, one end of the button triggering part penetrates out of an opening of the installation groove, a suspension cavity is further formed in one side of the base, and the connecting part is located in the suspension cavity and fixedly connected with the base. According to the technical scheme, the installation structure which can be suitable for universal installation of multiple vehicle doors, the installation cost is reduced, and the structure is simplified and light is obtained, and the problems that a vehicle door lock switch is complex in installation and high in installation cost are solved.

The invention discloses an elevator micro-motion leveling detection device and method. The problems that an existing elevator micro-motion leveling detection device is large in number of parts and high in cost are solved. The device comprises a leveling sensor and a leveling mark component in a hoistway, the leveling sensor is integrated with a plurality of detection elements for achieving leveling area edge detection, leveling area judgment and micro-motion area judgment, and different electric signals are output when all the elements are shielded and not shielded; the flat layer marking part is provided with an upper micro-motion area, a non-micro-motion area and a lower micro-motion area in the vertical direction, shielding pieces matched with the micro-motion area judging element are arranged on the flat layer marking part, an upper groove and a lower groove which are different in vertical length are formed by the adjacent shielding pieces, and the flat layer marking part is further provided with an edge groove matched with the edge detecting element. Detection parts are simplified, the cost is reduced, the position of the lift car can be accurately recognized, reliable signals are provided for micro-motion leveling, door area edge detection can be achieved, the elevator running safety is improved, and the device is matched with an existing elevator control system.

The invention discloses a method and a device for preparing a Maniyle ring based on a Gigabit-Maniyle placement technology. The method comprises the following steps: preprocessing the Maniyle ring and a Gigabit ring; preparing expanded pellets, and spraying heat-sensitive hydrogel on the surfaces of the expanded pellets; the surface modifier is used for modifying the heat-sensitive hydrogel, so that the expanded globules are not adhered to the muscular layer at the bottom of the uterus; and assembling the Mangyule ring, the Gamstone ring and the small expansion ball to form an integrated structure. The invention provides a method and a device for preparing a Maniyle ring based on Gemnant-Memnant placement, which are characterized in that the Maniyle ring and a Gemnant ring are cut off and pretreated, an expansion ball with a heat-sensitive hydrogel coating is prepared and modified to enhance the anti-blocking property, and finally the Maniyle ring, the Gemnant ring and the expansion ball are assembled into an integrated structure. According to the invention, integration of a Munyle ring fixing mechanism and a Gignette ring fixing mechanism is realized, the operation preparation process is simplified, the stability of the intrauterine device is improved, and the risk and trauma during taking out of the intrauterine device are reduced.

The present invention belongs to the technical field of rotary sprinklers, and specifically refers to a rotary sprinkler, including a rotating shaft, a rotating head, a shell and a connecting nut. A damping ring is provided in the middle of the rotating shaft, an oil seal is provided on the rotating shaft, an inner cavity of the shell forms an oil storage chamber between two oil seals, and the outer wall of the shell is evenly distributed with straightening fins along its circumference. The straightening fins and the shell are an integral structure, and an oil filling hole is provided on the outer wall of the shell, and a plug is connected to the oil filling hole. The present invention directly arranges the straightening fins on the shell, eliminating the straightening device structure, and the straightening fins and the shell are an integral structure and cannot be disassembled, so there is no need to assemble the straightening fins, which effectively simplifies the number of parts and improves assembly efficiency; at the same time, the present invention directly opens an oil filling hole on the shell, which is convenient for filling or replacing the damping oil, which not only reduces the difficulty of assembly operation, but also does not require disassembly for later maintenance.