62results about How to "Reduce stiffness" patented technology

The application is suitable for the technical field of cleaning equipment, and provides a tire, a walking wheel, a cleaning equipment and a cleaning system. The tire is used for at least the cleaning equipment. A plurality of protruding parts are arranged on the outer peripheral side wall of the tire. The plurality of protruding parts are arranged at intervals along the circumferential direction of the tire. At least one side of the tire in the axial direction is concavely provided with a blind groove structure. The number of the blind groove structures is the same as that of the protruding parts and is arranged one by one. Any one of the blind groove structures comprises at least two hollowed-out grooves arranged along the circumferential direction of the tire. The tire provided by the application has the advantage of good walking stability.

The present application relates to the technical field of tire overall preparation, and proposes a variable stiffness tire and a tire overall preparation device, which can adapt to various driving conditions and realize the collaborative optimization of comfort and control performance, and the structure can effectively disperse flexural stress, and is not prone to heat accumulation, bulging and cracking, thereby significantly improving high-speed durability and load capacity, and the matching tire overall preparation device can adapt to the molding process of the tire body, effectively improve tire production efficiency and manufacturing precision, and comprises a tire body and a triangular rubber ring, wherein the tire body comprises a tread, a sidewall and an inner tire ring, the sidewall is divided into a shoulder section, a sidewall middle section and a bead section in the radial direction, the stiffness of the bead section, the shoulder section and the sidewall middle section decreases in turn, the sidewall middle section is a main flexible deformation area, the shoulder section provides lateral restraint, the bead section provides high stiffness support, the tread is fixedly connected with the shoulder section, and the inner tire ring is fixedly connected with the triangular rubber ring.

The present application relates to a kind of helical progressive large space steel-concrete hybrid structure forming method, comprising: helical progressive large space steel-concrete hybrid structure, the structure includes central body structure, helical progressive ramp, large span roof, cantilever large space and roof vertical truss;Central body structure is located in middle zone, helical progressive ramp is located in the outer circle of central body structure, large span roof is located in the roof of internal multiple local large space area, cantilever large space is located in the high end of helical progressive large ramp, and roof vertical truss is rigidly supported on the roof of central body structure and large span roof.The beneficial effects of the present application are: central body structure is core support frame, external helical progressive ramp arrangement, multi-region large space roof structure is realized by helical progressive ramp, large span roof, and overall stress model is formed by cantilever large space, roof vertical truss, lateral stiffness is controlled, and multi-region large space, helical progressive building modeling and function are realized.

The invention relates to the technical field of elastic bushings, in particular to a magneto-rheological elastomer bushing for an automobile suspension and a vehicle suspension system. The magneto-rheological elastomer bushing comprises an inner sleeve and an outer sleeve which are coaxially arranged; the magnetorheological elastomer layer is filled between the inner sleeve and the outer sleeve, and the magnetorheological elastomer layer serves as a main bearing and rigidity adjusting component; the magnet exciting coil is arranged on the inner sleeve or the outer sleeve, and the magnet exciting coil applies a magnetic field to the magnetorheological elastomer layer to adjust the radial rigidity of the magnetorheological elastomer layer; the magneto-rheological elastomer composite material further comprises at least one magnetic conductive reinforcing piece which is arranged in the magneto-rheological elastomer layer in the radial direction, and the magneto-rheological elastomer layer is divided into at least two sub-layers in the radial direction by the magnetic conductive reinforcing piece. The rigidity of the vehicle can be instantly improved to enhance the control stability when high supporting performance is needed, the rigidity can be instantly reduced to optimize the riding comfort when high vibration filtering performance (such as a bumpy road surface) is needed, and dynamic intelligent balance between the two is achieved.

This utility model discloses a tiered energy-dissipating anti-ship collision system based on metamaterial structures, including an ultra-high performance concrete panel, a tiered energy-dissipating anti-collision layer, a rubber fender, bridge piers, bridge abutments, and bridge pile foundations. The tiered energy-dissipating anti-collision layer includes variable stiffness units, lightweight energy-dissipating materials, vertical steel plates, an upper top plate, and a lower bottom plate. The variable stiffness unit is composed of multiple concave hexagonal units connected by transverse and longitudinal steel plates, with the hollow structure in the middle filled with lightweight energy-dissipating materials such as polyurethane foam, ceramsite, and rubber granules that can absorb and disperse impact energy. The variable stiffness units are welded to the steel plates to form a whole, and the protective device is connected to the protected bridge pier through the rubber fender. The overall stiffness of the protective device increases with structural deformation upon impact, thus this utility model has a variable stiffness tiered energy-dissipating anti-collision effect, effectively prolonging the collision time between the ship and the bridge and reducing the impact force of the ship, achieving two-way protection for both the ship and the bridge.

The application provides a kind of based on energy-preserving matrix perturbation method's tension integral module dynamic behavior analysis, and the existing modeling method for tension integral structure is different from the method that rope and bar are simulated as not bending stiffness bar or both are regarded as beam, the method is based on energy-preserving matrix perturbation method, string element is used to model rope, and the actual vibration condition of structure can be reflected.Taking three-bar tension integral structure module unit as an example, first, the dynamic stiffness matrix with prestress is established for the rope and bar in the structure respectively;Then the W-W algorithm is used to solve the established dynamic stiffness matrix, and the structure frequency is obtained;Finally, the structure response is obtained under the existing frequency and verified, and from the verification result, it can be seen that the method has good calculation efficiency under the premise of ensuring accuracy.

The invention provides a tensegrity module dynamic behavior analysis method based on an energy-preserving matrix perturbation method, which is different from an existing modeling method aiming at a tensegrity structure that a rope and a rod piece are simulated into a rod without considering bending rigidity or both the rope and the rod piece are regarded as beams. The string units are adopted to model the rope, and the actual vibration condition of the structure can be reflected. Taking a three-rod tensegrity structure module unit as an example, firstly, dynamic stiffness matrixes with prestress are established for ropes and rod pieces in the structure respectively; solving the established dynamic stiffness matrix by adopting a W-W algorithm to obtain a structure frequency; and finally, structural response is obtained and verified under the condition of existing frequency, and verification results show that the method has good calculation efficiency on the premise of ensuring accuracy.

This invention discloses a locking and release device for a 4D-printed small satellite based on SMA (Super-Magnetic Atomizing) technology, belonging to the fields of aerospace and biomimetic 4D printing technology. The device consists of a main supporting shell 1, a launch platform 2, an auxiliary drive device 3, a locking lever 4, a locking and release spring assembly 5, and an energy storage spring assembly 6. The auxiliary drive device 3 controls the downward movement of the locking mechanism through temperature changes of the inner and outer springs, thereby compressing the energy storage spring assembly 6 and heating it to achieve autonomous energy storage. The launch platform 2 supports the satellite at its upper end and is tightly connected to the energy storage springs at its lower end. The locking and release spring assembly 5 is used to lock the satellite and drive its release. In summary, this invention provides a locking and release device for a 4D-printed small satellite based on SMA, making the failure modes of the satellite launch device effectively controllable and improving the device's adaptability to the extreme environment of space.

The application belongs to the technical field of mechanical dynamics, and discloses a six-degree-of-freedom large-load low-frequency excitation platform based on an air spring, which comprises an exciter, wherein the exciter comprises an upper end plate, a base and a horizontal swing mechanism, the horizontal swing mechanism is partially arranged in the base, and the upper end plate is connected to the base; the base and the horizontal swing mechanism jointly form an air spring, and the air spring is arranged opposite to the upper end plate; the upper end plate is used for connecting a load; the excitation platform makes the air spring deform by introducing air into the air spring to float the upper end plate, and then floats the load. The application overcomes the influence of the target load gravity on excitation through the air spring, reduces the stiffness in the vertical direction, makes the motor provide the excitation force of full frequency band and controllable size for the load, and has good low-frequency excitation effect.

The utility model relates to a curtain wall suspension structure belongs to curtain wall installation technical field. The upper end of wall fixed part is bent and forms lower layer horizontal supporting plate, and lower layer horizontal supporting plate is connected with curtain wall suspension supporting plate through damping seat, curtain wall suspension supporting plate, wall fixed part and lower layer horizontal supporting plate are all aluminium alloy components, and the suspension part of curtain wall suspension supporting plate has upwards upper hook and downwards lower hook. The utility model has the advantages that: wall fixed part, lower layer horizontal supporting plate and curtain wall suspension supporting plate of aluminium alloy material form integral rigid frame, are anchored with wall body through expansion bolts, are suitable for high -rise building curtain wall installation, and the tensile and shearing capacity is improved obviously. Through the damping seat between the newly added lower layer horizontal supporting plate and curtain wall suspension supporting plate, the low stiffness and high flexibility of rubber make it can block the transmission path of vibration, increase the connection stability and the damping effect between curtain wall suspension supporting plate and lower layer horizontal supporting plate, prolong the service life of building.

The utility model discloses an assembly-based building wall rapid self-locking mechanism, which comprises a first wall plate, a second wall plate, insertion blocks and insertion grooves, the second wall plate is arranged on one side of the first wall plate, the insertion blocks and the insertion grooves are uniformly arranged on two sides of the first wall plate and the second wall plate respectively, the insertion blocks are inserted into the insertion grooves correspondingly, and the insertion blocks are inserted into the insertion grooves correspondingly. And limiting grooves are formed in the two ends of each insertion block correspondingly, grooves are formed in the positions, at the two ends of each insertion groove, of the first wall plate and the second wall plate correspondingly, movable plates are arranged in the grooves through reset springs correspondingly, and limiting blocks are arranged at the ends, close to the insertion grooves, of the movable plates correspondingly. By installing the first wall plate, the second wall plate, the inserting block, the limiting groove, the inserting groove, the groove, the reset spring, the movable plate and the limiting block, preliminary positioning is achieved through rapid inserting connection of the inserting block and the inserting groove, automatic locking of the reset spring and the limiting block is matched, it is not needed to wait for curing of a binding material or repeatedly tighten a bolt, and the assembling time of a wall is shortened.

The application provides a sealing device, relates to the technical field of sealing, and aims to solve the technical problem of the failure risk of a spring energy storage sealing ring under extremely high and low temperatures. The sealing device comprises a sealing piece and an elastic assembly. A first sealed body is sleeved on the outside of a second sealed body and forms an annular cavity. The sealing piece is arranged in the annular cavity, and the sealing piece is in contact with a first sealing surface of the first sealed body and a second sealing surface of the second sealed body. The radial distance between the first sealing surface and the second sealing surface can be adjusted in a first direction. The elastic assembly is arranged at the bottom of the sealing piece. The elastic assembly is configured to provide elastic force to the sealing piece when the temperature changes, so that the sealing piece moves in the first direction. The sealing device provided by the application can reduce the failure risk of the sealing piece under extremely high and low temperatures.

The utility model belongs to the technical field of medical apparatus and instruments, concretely relates to a score structure and score balloon, score structure includes the score silk at the surface of balloon and is provided with the fixing piece at the both ends of score silk, the fixing piece is annular hollow structure, the one end away from score silk on the fixing piece is provided with the fixed ring, the utility model has high connecting strength, is not easy to fall off, further improves the overbending capacity, reduces the operation risk, improves the security.

The application provides an air conditioner indoor unit base and an air conditioner, and relates to the technical field of air conditioners, to solve the problem of insufficient support stiffness of two cross-flow fan wheel assemblies at the connection position. The air conditioner indoor unit base comprises an air outlet frame part, an air duct part and a water duct part, the water duct part comprises a front water duct part and a rear water duct part, the inner side of the air duct part is provided with a support seat for supporting the cross-flow fan wheel assembly, the air duct part is connected to the lower side of the rear water duct part, the air duct part extends downward from the rear water duct part, the lower end of the air duct part is located on the front side of the rear water duct part, the air outlet frame part is connected to the lower end of the air duct part, the front water duct part is connected to the upper side of the air outlet frame part, the rear end of the support seat extends and is connected to the inner side of the air duct part, the upper end of the support seat is connected to the rear water duct part, the front lower end of the support seat is connected to the air outlet frame part, and the front upper end of the support seat is connected to the front water duct part; the support seat is integrally formed with the rear water duct part, the air duct part, the air outlet frame part and the front water duct part. The air conditioner indoor unit base provided by the application can improve the support stiffness of the cross-flow fan wheel assembly.

This application provides a roadbed construction method applicable to existing highway widening and reconstruction projects, relating to the field of highway widening and reconstruction. It includes: stepped excavation treatment: excavating in stages along the widening side of the existing roadbed to form a stepped connection zone, and laying an interface geogrid on the stepped surface; layered reverse-wrapping reinforced filling: compacting the fill material, folding the interface geogrid back into the fill body to form an inner reverse-wrapping reinforced fill body; assembling the outer segmented wall: hoisting and vertically splicing the prefabricated outer segmented wall; laying a composite drainage system; assembling the top capping components; installing the top tension restraint structure: laying a top tension geogrid, connecting the two ends to the outer segmented wall via adjustable connecting components; pre-tensioning and locking the top tension geogrid, pouring and shaping the top surface of the roadbed, connecting to the existing pavement, and removing construction auxiliary components to complete the construction. This application has the effect of reducing the risk of differential settlement and shear slippage.

According to the positioning unit and the steel rail fastener, the through positioning hole is formed in the middle of the positioning unit, and the elastic unit can be arranged according to the height difference between the positioning unit and the steel rail and the depth of the positioning hole, so that the thickness of the elastic unit can be obviously increased in the limited height between a sleeper and the steel rail; and the rigidity is correspondingly reduced, so that the fastener has better vibration reduction performance. Moreover, when a train passes through a steel rail on the steel rail fastener, the elastic unit plays a role in vertical bearing, and the buckling and pressing unit and the positioning unit play roles in transverse and longitudinal bearing, so that effective separation of vertical bearing and longitudinal and transverse bearing of the steel rail fastener is innovatively realized through the arrangement of the through positioning holes, a force transmission path is optimized, and the reliability of the steel rail fastener is improved. The vertical force basically does not act on the positioning unit, so that the problem that the positioning unit is bent, deformed and even broken due to the fact that the positioning unit frequently bears large vertical force for a long time can be solved, the continuous service life of the fastener is longer, and the reliability is higher.

This invention relates to a computer-aided medical system and its control method. The computer-aided medical system includes a flexible, elongated instrument. The flexible, elongated instrument includes multiple wires extending from a proximal end of the instrument to a distal end. Each of the multiple wires can be used to guide the distal end. The system also includes a control system coupled to the flexible, elongated instrument. The control system is configured to monitor movement of the flexible, elongated instrument along a longitudinal central axis and, based on this monitoring, determine the degree of movement of the flexible, elongated instrument along the longitudinal central axis in a first direction. The control system is also configured to change the stiffness of the flexible, elongated instrument by adjusting one or more forces applied to the distal end of the flexible, elongated instrument by the multiple wires, based on a stiffness profile relative to the degree of movement.

The application discloses a kind of magnetic control negative stiffness adjusting methods, comprising the following steps: two magneto-rheological elastomer units are respectively arranged, and rigid member is connected between two magneto-rheological elastomer units;Pre-compression force perpendicular to two magneto-rheological elastomer units is applied to rigid member, so that deformation is generated in the direction of two magneto-rheological elastomer unit connecting line respectively and pre-shear force is generated, while negative stiffness force is generated in the direction perpendicular to two magneto-rheological elastomer unit connecting line;The same adjustable magnetic field of size is arranged on two magneto-rheological elastomer units respectively, and the size of magnetic field is controlled, so that the negative stiffness force value generated by two magneto-rheological elastomers can be controlled;The application can solve the current magneto-rheological elastomer vibration isolation mechanism stiffness value is higher and can only be positively regulated, it is difficult to carry out stiffness negative regulation, and then it is difficult to simultaneously exist for the equipment of direct disturbance and external disturbance, realize the technical problem of efficient vibration isolation and stability.

The utility model discloses a buffer block with variable rigidity, and belongs to the technical field of automobiles. The problem that in the prior art, the rigidity of a buffer block is fixed is solved. The buffer block mainly comprises a buffer block body, an oil cavity is formed in the buffer block body, a top plate is installed at the top of the buffer block body, an oil hole is formed in the top of the oil cavity, the oil hole is connected with the lower end of a middle oil pipe, the upper end of the middle oil pipe penetrates through the top plate and is connected with the bottom of an oil tank, and a top oil pipe is installed at the top of the oil tank. The top oil pipe extends downwards into the lower side in the oil tank, a first electric valve is mounted on the top oil pipe on the upper side of the oil tank, a liquid level pipe is further mounted at the top of the oil tank, a second electric valve is mounted at the bottom of the liquid level pipe, and a breather valve and a liquid level meter are mounted on the liquid level pipe on the upper side of the second electric valve respectively.

This invention relates to the field of vibration isolation device technology, specifically to a parallel vibration isolation device based on a cosine-shaped curved beam with positive and negative stiffness, comprising: a laminated rubber bearing, including an upper connecting plate and a lower connecting plate, with a rubber layer and a steel plate layer between the upper and lower connecting plates, and located at the center of the upper and lower connecting plates; a fixing structure, disposed on the upper and lower connecting plates and arranged in parallel on the outer periphery of the rubber layer and the steel plate layer; a laminated cosine curved beam, having multiple pieces, disposed on the fixing structure, with a joint on the laminated cosine curved beam, the joint being connected to the upper connecting plate; and a limiting post, disposed on the lower connecting plate, the limiting post being located at the bottom of the laminated cosine curved beam. This parallel vibration isolation device based on a cosine-shaped curved beam has a simple structure, and by arranging the laminated cosine curved beam in parallel on the outer periphery of the laminated rubber bearing, it improves the vertical vibration isolation capability without affecting the horizontal vibration isolation performance.

The invention discloses a small-size low-rigidity iron-gallium magnetostriction driving module and an underwater acoustic transducer. The iron-gallium magnetostriction driving module comprises an iron-gallium bent beam, a driving coil, a permanent magnet and a high-permeability transition block, the iron-gallium bent beam comprises a main beam, an auxiliary beam and fixed end blocks which are integrated, the main beam and the auxiliary beam are arranged in parallel, the two ends of the main beam and the two ends of the auxiliary beam are connected through the fixed end blocks, the fixed end blocks downwards extend out of beam feet, and the beam feet exceed the lower edge of the auxiliary beam and serve as the open end and the tail end of a magnetic induction line of a conduction bias magnetic field. A boss is upwards arranged in the middle of the main beam, and a connecting hole is reserved in the middle of the boss; the driving coil comprises main beam coils and auxiliary beam coils, the main beam coils are wound on the main beams on the two sides of the boss respectively, and the auxiliary beam coils are wound on the auxiliary beams. According to the driving module, through the low-rigidity bending mode design and the dynamic and static separated magnetic circuit design, the double breakthrough that the resonant frequency of the underwater acoustic transducer driving part body is greatly reduced and the height size is synchronously reduced is achieved.

The application provides an elastic sealing device, relates to the technical field of sealing, and aims to solve the technical problem that spring energy storage sealing rings have failure risks at extremely high and low temperatures. The elastic sealing device comprises a flexible sealing sleeve and a deformation assembly. The flexible sealing sleeve is annular, and comprises a body. The body is provided with a receiving groove, and a first sealing edge and a second sealing edge are formed on both sides of the body. The deformation assembly comprises at least a first elastic member and a second elastic member that are stacked together. The first elastic member and the second elastic member have different thermal expansion coefficients. The deformation assembly is arranged on the body and at least contacts part of the first sealing edge and part of the second sealing edge. The deformation assembly is configured to provide a tension or a contraction force to the body, so as to adjust the sealing force between the first sealing edge, the second sealing edge and a sealed body. The application provides the elastic sealing device for sealing a rotating shaft and a sealing seat.

The utility model discloses a concrete wall for hanging heavy objects, which comprises a reinforced concrete beam, a square groove is arranged at the center of the reinforced concrete beam, masonry filling walls are symmetrically arranged at the square groove of the reinforced concrete beam, and the masonry filling walls are vertically and symmetrically arranged. And the two sides of the cast-in-place infilled wall are attached to the side walls of the masonry infilled wall. An original light masonry wall is changed into a cast-in-place infilled wall, the purposes of being safe, reliable, convenient to construct, capable of guaranteeing the building function and attractiveness and saving the construction cost are achieved through assistance of a suspension structure, the upper portion and the lower portion of the wall are separated through the extruded sheets, the construction cost can be saved, and the wall is separated from the upper concrete beam and the lower concrete beam. The rigidity of a main body structure caused by a cast-in-place infilled wall is reduced, meanwhile, the effect of the infilled wall is achieved, harm caused by increasing the rigidity of the main body structure is avoided, a masonry wall is improved, the cast-in-place infilled wall replaces a masonry partition wall, and the strength and safety of installation and fixation of the water heater are guaranteed.

The present application relates to the technical field of ships, and provides a variable stiffness gradient type multilayer composite sea-going flexible pipe, the flexible pipe body comprising, from inside to outside, a rubber inner lining layer, a variable stiffness metal bellows framework layer, a damping constraint layer and a protective layer; the stiffness of the variable stiffness metal bellows framework layer gradually increases from the middle region to the two end regions. The flexible pipe body is composed of multiple layers of structure layers with different functions, the structural parameters of the variable stiffness metal bellows framework layer change along the axial direction in sections, so that the overall stiffness of the flexible pipe body gradually decreases from the two end connecting flanges to the middle part, forming a gradient stiffness distribution with high stiffness at the two ends and low stiffness in the middle. Under normal working conditions, the middle low stiffness section is responsible for absorbing small deformation and vibration; under extreme working conditions, the two high stiffness sections automatically intervene to provide limiting protection, so that the same flexible pipe presents different mechanical response characteristics under different working conditions, and self-adaptive compensation can be realized without additional configuration of limiting pull rods.

The invention discloses a flexible micro electrical stimulator capable of being wound and adhered to peripheral nerve tracts and a preparation method and application thereof, and relates to the technical field of crossing of neural engineering, bioelectronics and medical instruments. A first insulation layer, a first friction electrode layer, a middle isolation layer, a second friction electrode layer and a second insulation layer are assembled layer by layer; the first insulation layer and the second insulation layer are self-adhesion polyurethane layers, and the first friction electrode layer, the middle isolation layer and the second friction electrode layer are packaged in the first insulation layer and the second insulation layer; the first friction electrode layer is a gold foil, and the surface of the gold foil is electroplated with a PEDOT: PSS plating layer formed by a 3, 4-ethylenedioxythiophene monomer and polystyrene sulfonate; the second friction electrode layer is gold foil or aluminum foil. According to the invention, macro-scale contact-separation type friction power generation is realized through ultrasonic driving, and the device has good output performance, long-term stability and nerve stimulation effect.

The application provides a MEMS capacitive pressure sensor and a preparation and use method thereof, and relates to the technical field of sensors.The structure of the MEMS capacitive pressure sensor provided by the application mainly comprises a force-sensitive nanofilm, a temperature-sensitive nanofilm, a substrate and a base plate, the substrate and the base plate are separated into two independent sealed cavities, and the surface of the base plate opposite to the force-sensitive nanofilm is etched with a ladder-shaped structure.The application optimizes the capacitive-pressure response characteristics (when the external pressure acts, the force-sensitive nanofilm is deformed, and the linear coupling is generated by the change of the effective overlapping area and the interval between the force-sensitive nanofilm and the ladder-shaped structure), and combines with the in-situ temperature compensation of graphene, so that the MEMS capacitive pressure sensor provided by the application can realize high linearity of pressure measurement in a wide temperature range, and the technical problems of traditional devices, such as serious temperature crosstalk and narrow linear interval, are solved, thereby providing a new solution for high-precision and high-reliability pressure measurement.

This invention discloses a lightweight structure for a laser-radio integrated communication payload for microsatellites, belonging to the field of satellite payload lightweighting technology. The invention includes a mirror body and a substrate. Multiple honeycomb holes are evenly distributed on the back of the mirror body, and triangular ribs are provided at the intersections of these holes. A support ring is fitted to the outer edge of the mirror body, and three positioning holes and nine mounting holes are evenly distributed on the outer surface of the support ring. By evenly distributing hexagonal honeycomb holes on the back of the mirror body, the weight of the mirror body is significantly reduced. By using novel lightweight materials for the mirror body, substrate, and support, the thermal stability of the primary mirror structure is improved while maintaining structural rigidity. This reduces surface distortion while significantly compressing the weight of the primary mirror structure, achieving further optimization compared to traditional lightweighting solutions. This results in the optimization of the satellite payload structure for extreme lightweighting, ultra-stable thermal performance, and high dynamic rigidity.

The application discloses a kind of outdoor adaptive X-ray photographing system and method based on mobile carrier, four-legged robot dog is used as mobile bearing platform, and flat pose recognition is realized by relying on multi-modal perception unit, patient position reconstruction and body thickness acquisition, two-stage alignment strategy of chassis coarse adjustment, mechanical arm fine adjustment is used to eliminate image geometric distortion.Meanwhile, macro-micro decoupling dual-channel control architecture is used, and high and low frequency disturbance in the field is suppressed layer by layer, combined with photographing timing to realize mechanical arm variable stiffness regulation, and fault tolerance and exposure stability are considered.The application constructs the dual-domain quality control mechanism of frequency spectrum steepness analysis and spatial gradient variance detection, realizes real-time image defect discrimination and re-shooting guidance.The application aims to solve the technical pain points of poor terrain adaptability, high artificial dependence, low alignment accuracy, weak anti-interference ability and no on-site intelligent quality control of traditional field photographing equipment.

The present application relates to butterfly valve technical field, specifically to a kind of butterfly valve.The butterfly valve, including: valve body, valve body includes medium passage, rotatable butterfly plate is in medium passage;Anti-corrosion structure, anti-corrosion structure covers the inner wall of medium passage, anti-corrosion structure has the first sealing portion protruding towards butterfly plate, the first sealing portion has elasticity, the first sealing portion is in contact with butterfly plate, annular elastic member is set in the first sealing portion, elastic member is provided with multiple interval setting cut groove, adjacent cut groove is structured as spring piece, spring piece provides elastic driving force for the first sealing portion.The first sealing portion has better elasticity, can be more effectively in contact with butterfly plate, improve sealing performance, at the same time, since elastic member is divided into multiple spring pieces, reduce overall stiffness, improve elasticity, ensure that good rebound effect can be maintained after long time use, avoid the sealing leakage problem caused by rubber long time under pressure and unable to rebound.