72results about How to "Realize energy consumption" patented technology

The invention relates to a drum-type omni-directional turned mass damper, belonging to the technical field of vibration resistance and absorption in structural engineering, and comprising a top cover,an outer-wall sleeve connected with the top cover, a sleeve-type structure arranged inside the outer-wall sleeve, an internal horizontal baffle and an external horizontal baffle. The sleeve-type structure comprises an inner-ring core cylinder, an outer-ring core cylinder, a steel ball holder and a steel ball, wherein the inner-ring core cylinder is arranged in the outer-ring core cylinder, the outer surface of the inner-ring core cylinder is fixed with the steel ball holder that is internally equipped with the steel ball. A viscous damper is connected between the outer-ring core cylinder andthe outer-wall sleeve, the lower end faces of the inner-ring core cylinder and the outer-ring core cylinder are both connected with the internal horizontal baffle via a universal rolling spherical hinge, and a spring is connected between the internal horizontal baffle and the external horizontal baffle which is further fixedly connected with a substructure. The damper can be operable for turning energy consumption and vibration damping in all directions of the structure, namely, two horizontal directions, vertical direction, and two directions of reversing and swinging.

The invention discloses a replaceable transversely-arranged prestressing tendon self-resetting energy dissipation bridge pier, and belongs to the field of structural engineering earthquake resistance and reduction. The replaceable transversely-arranged prestressing tendon self-resetting energy dissipation bridge pier comprises a prestressing steel bar concrete column, a longitudinal prestressing tendon, common stirrups, a rubber layer, reinforcing stirrups, transverse prestressing tendons, anchorage devices and a foundation. The transverse prestressing tendons of the bridge pier provide elastic restoring force, meanwhile, the rubber layer dissipates energy of the earthquake under the action of the earthquake, the self-resetting energy dissipation function of the bridge pier under the action of normal loads and the earthquake can be achieved, and finally the energy dissipation and earthquake disaster reduction functions of the whole bridge pier are achieved. The replaceable transversely-arranged prestressing tendon self-resetting energy dissipation bridge pier has the advantages of being capable of conducting self-resetting, being replaceable, reducing the earthquake disaster, dissipating the energy and the like.

The invention discloses a multi-dimensional collision energy consumption mass pendulum damper which consists of a mass ball, a steel cable, a metal cylinder and a viscose elastic material layer, wherein the metal cylinder is an inverted cylinder opening vertically downward; the mass ball, the steel cable and the viscose elastic material layer are all located in the metal cylinder; the mass ball and the steel cable are located in the middle of the metal cylinder; the upper end of the steel cable is fixedly connected with a cylinder bottom plate of the metal cylinder; the lower end of the steel cable is fixedly connected with the mass ball; the mass ball is suspended in the metal cylinder; the viscose elastic material layer is attached to the inner wall of the metal cylinder; and the viscose elastic material layer is arranged in a position capable of enabling collision with the mass ball when the mass ball swings in the metal cylinder so as to realize energy absorption, energy consumption and shock absorption. The damper disclosed by the invention can reduce the vibration reaction of the structure and solve the problem of the structure in seismic resistance and wind resistance.

The invention relates to an energy-dissipation self-resetting bridge pier column structure, which belongs to the field of earthquake resistance and shock absorption of structural engineering. The energy-dissipation self-resetting bridge pier column structure comprises a reinforcement concrete column, a stay cable, a damping energy dissipation device, a foundation, a longitudinal bar, a hoop bar, a curved reinforcing steel bar, a rubber layer, a stay cable anchor tool, an anchor rod and an anchor rod anchor tool, wherein the damping energy dissipation device comprises a spring, a liquid viscous damper and a gear. The damping energy dissipation device is cable-stayed to the top end of the reinforcement concrete column through the stay cable, the self-resetting function of a pier column is realized through the spring in the damping energy dissipation device, and the energy dissipation of the pier column in the reciprocating movement in the earthquake can be realized through the liquid viscous damper in the damping energy dissipation device. In addition, the energy dissipation function under the effect of the earthquake can be realized through the rubber layer between the reinforcement concrete column and the foundation, so that the self-resetting energy dissipation function of the bridge pier column system is realized, and the energy-dissipation shock absorption of the bridge can be realized.

A bridge damping blocking tenon device can satisfy the horizontal lateral-pushing resisting rigidity of a bridge body under normal service condition of vertical direction, crosswise direction and longitudinal direction under normal impact load, and further can consume energy in the vertical direction, so as to effectively improve the earthquake resistance of a bridge. The bridge damping blocking tenon device comprises a sleeve, elastic steel plates and a damping blocking tenon; the damping blocking tenon comprises a lower conical column structure section and an upper rectangular structure section; the upper parts of the upper rectangular structure section and the lower conical column structure section are arranged in the rectangular inner cavity of the sleeve; the semi-lunar elastic steel plates are arranged on two sides of the upper part of the lower conical column structure section in the transverse direction of the bridge, the upper ends of the elastic steel plates are blocked in the intersection part of the upper rectangular structure section and the lower conical column structure section, and the lower ends of the elastic steel plates are blocked between the bottom surface of the rectangular inner cavity of the sleeve and the lower conical column structure section. The side wall of the sleeve is fixedly connected to a base plate and is connected with the transverse side wall of the bridge body by high-strength bolt assemblies. The lower end of the lower conical column structure section is fixedly connected with a mounting base and is fixedly connected with a pier stud by high-strength bolt assemblies.

The invention belongs to the technical field of building structure vibration attenuation, and particularly relates to a tuned mass damping device utilizing eddy current for providing damping. The tuned mass damping device comprises a conductor plate and a permanent magnet, and is characterized by also comprising a main shaft, a spring and an eccentric mass block, wherein the eccentric mass block is fixedly arranged on the main shaft, or a rotating bearing is arranged between the eccentric mass block and the main shaft, one end of the spring is connected with the eccentric mass block, the conductor plate is fixedly arranged at one side of the eccentric mass block in a direction vertical to an axle line of the main shaft, the permanent magnet is positioned between the conductor plate and the eccentric mass block and is fixedly arranged on the eccentric mass block, a gap is formed between the conductor plate and the permanent magnet, and the conductor plate, the permanent magnet, the main shaft, the spring and the eccentric mass block jointly form a group of eddy current tuned mass damping structures. The eccentric eddy current tuned mass damping device has the advantages that the structure is simple, the practicability is high, safety and reliability are realized, the cost performance is higher, the tuned mass damping device can be widely applied to structure vibration control of various high-rise and super high-rise buildings, drawn-up structures or long-span buildings, and the market application prospects are very wide.

The invention relates to a particle-group idler wheel synergistic tuned damper comprising an external cavity unit, limiting springs, a nested-type particle group, an internal cavity unit, metal partition plates, a damping particle group, a damping hole, viscous liquid and a buffering material. Each of the internal cavity unit and the external cavity unit of the damper is a cylinder, the external cavity unit is filled with the viscous liquid, the internal cavity unit is controlled in the external cavity unit through the limiting springs, and by taking the nested-type particle group as idler wheels, the internal cavity unit moves back and forth in the any horizontal direction along with continuous sloshing of the viscous liquid; the interior of the internal cavity unit is divided into a plurality of subspaces through the metal partition plates, damping holes are formed in the vertical metal partition plates, and the subspaces are composed of air, the particle groups and the viscous liquid; back-forth sloshing of the viscous liquid drives the internal cavity unit to move back and forth for vibration reduce; and energy is consumed through friction between the viscous liquid and dampingholes. According to the particle-group idler wheel synergistic tuned damper, the advantages of various dampers are combined, the vibration-reducing frequency band is widen, multi-directional vibration-reducing and energy dissipation are achieved, the efficiency is high, and typical practicability in the field of civil structure vibration control is achieved.

The invention belongs to the technical field of vibration attenuation of electrical equipment and power transmission circuits, and relates to a collision energy-dissipation spacing rod. The collision energy-dissipation spacing rod is composed of a mass ball, a spring, a metal hollow ball, a metal circuit tube, a spacing rod frame, a wire clamp and a viscoelastic material layer. The invention aims to solve the problems of being single in function and limited in vibration attenuation effect in the existing spacing rod. When the external environment load is relatively low, the vibration attenuation effect is realized with the help of swinging of the mass ball; when the external environment load is relatively high, the swinging amplitude of the mass ball is increased; the mass ball is collided with a viscoelastic material on the inner wall of the metal hollow ball; the viscoelastic material can absorb a part of energy in the collision process, such that the energy dissipation effect is realized; because the mass ball can swing in a space in any direction and can be collided with the viscoelastic material on the inner wall of the metal hollow ball, the collision energy-dissipation spacing rod has the multi-dimensional vibration attenuation characteristics; and furthermore, the collision energy-dissipation spacing rod is simple to design and manufacture and can be widely applied in the technical field of vibration attenuation of electrical equipment and power transmission circuits.

The invention discloses a fabricated steel structure beam and column joint capable of consuming energy in an earthquake. The fabricated steel structure beam and column joint comprises a column with asleeve, a steel beam, cross-shaped bolt sliding grooves formed in the connecting face of the sleeve and the steel beam, a high-strength bolt for connecting the steel beam with the column, and rubber damping pads arranged in the sleeve. The column with the sleeve and the beam end are connected together through the high-strength bolt; the rubber damping pads are arranged in the sleeve and located onthe contact surface of the beam end and the column, the beam end impacts the rubber damping pads in the earthquake, and thus damage of impact between components to the structure is reduced; and the column with the sleeve is prefabricated through a factory, the bolt sliding grooves can be formed in the top face, the bottom face, the front face and the rear face of the sleeve according to beam andcolumn connection needs, under the earthquake effects of different directions, the bolt can slide in the different directions of the cross-shaped sliding grooves, and thus the purpose that the joint can consume the energy under the earthquake effects of the different directions is achieved.

The invention relates to a self-resetting swing reinforced concrete column based on a shape memory alloy. The self-resetting swing reinforced concrete column comprises a concrete foundation (2), a prefabricated reinforced concrete column body (1) arranged on the concrete foundation (2), and super-elastic shape memory alloy screw rods (3) distributed around the concrete foundation (2) and the prefabricated reinforced concrete column body (1) and connecting the concrete foundation (2) with the prefabricated reinforced concrete column body (1), wherein a foundation top face steel plate (5) and a column bottom steel plate (4) are pre-embedded in the contact faces of the concrete foundation (2) and the prefabricated reinforced concrete column body (1) correspondingly, and a shear resistant element (7) is further arranged between the foundation top face steel plate (5) and the column bottom steel plate (4). Compared with the prior art, the self-resetting swing reinforced concrete column is simple in structure and flexible in design; the reinforced concrete column adopts prefabricating and assembling modes, so that construction is convenient; and it can be guaranteed that the using function of the reinforced concrete column is not interrupted after an earthquake through structural self-resetting capacity, so that significant repairing and reinforcing costs after the earthquake in a traditional reinforced concrete structure are effectively avoided.

The invention relates to a self-resetting three-way limiting rubber support which comprises an upper support plate (3), a lower support plate (14), rubber laminated layers and shape memory alloy stranded wires (8), wherein the rubber laminated layers are placed between the upper support plate (3) and the lower support plate (14), the shape memory alloy stranded wires (8) are arranged around the rubber laminated layers, and the two ends of the shape memory alloy stranded wires (8) are connected with the upper support plate (3) and the lower support plate (14). Compared with the prior art, the self-resetting three-way limiting rubber support has great shock absorption and limiting capacity under the effect of horizontal and vertical earthquakes, falling-off damage of bridges is prevented, meanwhile, self-resetting of the bridges during earthquakes can be accelerated, in addition, the energy-dissipating capacity is achieved, damage of piers is reduced to the greatest extent, and the restorability of the bridges is improved.

The invention provides a fabricated self-resetting beam column joint and a construction method thereof. The joint is connected with a beam column component through wedge-shaped connecting pieces, beamflanges are provided with corresponding slopes matched with the wedge-shaped connecting pieces, and the beam flanges and the wedge-shaped connecting pieces are combined to form friction pairs. SMA bolts are adopted for connecting and pressing the steel beam flanges and the wedge-shaped connecting pieces, and it is guaranteed that the friction pairs are always kept tightly attached in the slidingprocess. Kidney-shaped bolt holes are formed in the beam flanges to achieve relative sliding between the beam flanges and the wedge-shaped connecting pieces, SMA bolt deformation is increased in the sliding process, so that the self-resetting capacity is excited, meanwhile, friction force between the friction pairs is increased, and the energy dissipation capacity of the joint is improved. On theother hand, SMA cables are adopted to connect additional extending flanges of the wedge-shaped connecting pieces with additional connecting plates on a steel beam, so that multi-assembly energy dissipation and self-resetting capacity of the joint under larger deformation are achieved. Therefore, the joint well realizes the balance between the self-resetting performance and the energy dissipation capacity, and solves the problem that the energy dissipation characteristic and the self-resetting characteristic of existing joints are difficult to combine at the same time.

The invention discloses a multi-stage buffered type bottom movement supporting device for object transportation. The multi-stage buffered type bottom movement supporting device for object transportation comprises a middle installation block. The multi-stage buffered type bottom movement supporting device for object transportation can be installed on the bottom part of a transportation plate, and can play a role in cushioning when moving at the same time; in addition, the cushioning is divided into compressed spring type cushioning, air flow type cushioning and a steel plate energy consumptiontype, and the three cushioning modes are combined, so that a cushioning effect is remarkable, the impact on the transported objects due to vibration is reduced, and the adaptability is high; in addition, the device is provided with spiral spring elastic telescopic type part connecting cushioning mechanisms, an elastic telescopic support function is realized by utilizing the elasticity of spiral springs; meanwhile, rolling wheels have the effects on resisting a rugged pavement; in addition, the device is provided with a spiral spring elasticity and air flow speed control type cushioning mechanism, so that a cushioning effect can be controlled by utilizing the spiral springs and the air flowing speed; and in addition, the device is provided with an annular steel plate rigidity bending friction energy consumption type cushioning mechanism, so that energy consumption is realized when an annular steel plate is bent.

The invention discloses a prefabricated assembly type self-resetting frame integral structure which comprises foundations, steel columns, cross beams, floor slabs, prefabricated filling wallboards andU-shaped clamps. The steel columns and the foundations form self-resetting column base structures; the steel columns and the cross beams connected with two sides thereof form self-resetting joint structures; when an earthquake comes, the self-resetting joint structures located at the beam-column joints dissipate earthquake energy firstly, and the horizontal bearing capacity of the structure is improved; secondly, the floor slabs and the prefabricated filling wallboards are not in direct contact with the steel columns; certain distances are reserved between the prefabricated filling wallboardsand the bottoms of the U-shaped clamps on the upper portion and the two sides, when the overall structure has the tendency of lateral overturning, the floor slabs and the prefabricated filling wallboards keep a normal stable state, it is guaranteed that the gravity center of the overall structure does not deviate substantially along with the earthquake action, and the overall structure has the self-resetting capacity after an earthquake. And finally, the self-resetting joint structures and the self-resetting column base structures play a role to jointly ensure that joints and column bases arenot greatly damaged, so that the energy consumption and the self-resetting function of the structure are realized.

The invention discloses a self-return energy-dissipating joint for beams and a column. The self-return energy-dissipating joint comprises the steel column, the middle beam, the short beam, connectingplates, a friction plate, a limiting device, a hinged support base and a high-strength anchor rod, wherein the steel column is vertically arranged, and the middle beam is transversely arranged; one end of the short beam is fixedly connected to the steel column, and a gap is formed between the other end of the short beam and the middle beam; the two connecting plates are separately positioned at the two sides of a web of the short beam and a web of the middle beam; the friction plate is cushioned between the web of the short beam and the connecting plates; the limiting device is a barrel body or a rack body which is fixed to the bottom surface of the lower wing edge of the middle beam, and is provided with through holes in two sides; the hinged support base is fixed on the steel column; oneend of the high-strength anchor rod is hinged with the hinged support base, and the other end of the high-strength anchor rod passes through the through holes of the limiting device; and a disc-shaped spring group sleeves the high-strength anchor rod, and the two ends of the high-strength anchor rod are symmetrically provided with the limiting steel plate and the high-strength nut in a sleeved mode. Pre-pressing force is applied to the disc-shaped spring group, so that the beam and the column have self-return ability; during a strong earthquake, the short beam is hinged with the middle beam to rotate and rub to dissipate energy; and the disc-shaped spring group under the beam column joint realizes self-return.

The invention discloses a space-limited viscous damping wall which comprises a rack, a first gear assembly, a second gear assembly, a connecting frame, a middle plate and two outer side plates, the middle plate ise arranged between the outer side plates, and viscous liquid is packed between the outer side plates. Horizontal plates are vertically arranged on two sides of the middle plate, and rolling wheels are arranged on the lower sides of the horizontal plates. A groove is formed in the top end of each outer side plate, and the rolling wheels are matched with the grooves. The distance between a first rotating rod and the center of the first gear assembly is r, and the length of the strip-shaped groove exceeds 2r. The distance between the ends, in the beam length direction, of the outer side plates is larger than the sum of the length of an inner plate in the beam length direction and 2r. The rack is installed at the lower end of an upper beam, and the outer side plates, the first gear assembly and the second gear assembly are fixed to a lower beam. The invention aims to provide the space-limited viscous damping wall so as to solve the problem of how to install and design the viscous damping wall when the space is limited.

The invention discloses a power cabinet mounting base for safety protection of electronic equipment. The power cabinet mounting base comprises a bottom mounting base plate. According to the power cabinet mounting base, the power cabinet mounting base is installed on the ground through cement, and the horizontal angle adjusting effect can be realized through a three-point positioning technology, sothat the device can achieve a certain bending effect when being impacted by the outside, and is high in anti-interference performance; meanwhile, the device has a buffering function and is high in anti-vibration effect; moreover, the device is provided with a thread and spiral three-point positioning horizontal angle adjusting mechanism, the horizontal angle of the device can be effectively controlled by utilizing the thread structure and the spiral blades, and meanwhile, the device has an effect of resisting transverse external force; in addition, the device is provided with an annular steelplate accumulation incremental type friction energy consumption conversion mechanism, so that the vibration effect can be converted into friction, the heat energy is generated, and the energy consumption effect is realized; and in addition, the device is provided with a spiral spring telescopic buffering effective damping mechanism and can achieve a certain anti-vibration effect under the actionof a spiral spring.

The invention discloses a fabricated steel structure beam-column energy dissipation connector. The connector comprises a first connecting steel beam, a second connecting steel beam and two energy dissipation plates, wherein the first connecting steel beam and the second connecting steel beam are horizontally arranged between a steel column member and a steel beam member, one end of the first connecting steel beam is fixed to the steel column member, the other end of the first connecting steel beam is hinged to one end of the second connecting steel beam, the other end of the second connectingsteel beam is fixed to the steel beam member, hinge shafts of the first connecting steel beam and the second connecting steel beam are horizontally arranged, the two energy dissipation plates are symmetrically arranged on the upper side and the lower side of the first connecting steel beam and the second connecting steel beam, and the two ends of the energy dissipation plates are detachably fixedto the first connecting steel beam and the second connecting steel beam correspondingly. According to the connector, by means of the mutually hinged connecting steel beams, a relatively weak area is formed at the beam end of a steel frame beam-column joint area, the controllability of a beam end shaping hinge is achieved, the energy dissipation plates can effectively absorb earthquake capacity, damage to a beam-column joint of a steel structure is avoided, the overall anti-seismic property of the structure is improved, post-earthquake repair is facilitated, and the repair and reinforcement cost is obviously reduced.

The invention discloses a schizophrenia screening method based on portable EEG equipment. The method comprises an electroencephalogram signal collection and discrimination step. The electroencephalogram signal collection and discrimination step comprises the following steps: 1, carrying out signal induction through 1-4 lead high-sensitivity electrode slices, carrying out collection of original electroencephalogram signals, and carrying out signal stability test on the original signals through an impedance test module. According to the invention, the original electroencephalogram signals are collected in a portable manner through electroencephalogram, synchronization signal amplification is carried out, the electroencephalogram signals are transmitted through wireless transmission, electroencephalogram signals are received at the mobile terminal, and the received signals communicate with the cloud for storage. Through an electroencephalogram preprocessing algorithm, an electroencephalogram signal identification algorithm and a corresponding electroencephalogram machine learning algorithm and a deep learning algorithm, brain function and the schizophrenia disorder are measured and evaluated by analyzing and calculating acquired data of brain signals of people under different types and states and comparing electroencephalogram signals of confirmed schizophrenia patients.

The invention discloses a rotary damper. The rotary damper comprises a mounting structure and an energy consumption structure, wherein the mounting structure comprises a first mounting part and a second mounting part which are spaced from each other; the energy consumption structure is arranged between the first mounting part and the second mounting part and comprises an energy consumption pipe assembly, a first connecting assembly and a second connecting assembly; the first connecting assembly is connected with the first mounting part and the energy consumption pipe assembly; the second connecting assembly is connected with the second mounting part and the energy consumption pipe assembly; and the first mounting part and the second mounting part move relatively to drive the energy consumption pipe assembly to be subjected to torsional deformation. The rotary damper is based on a torsional energy consumption mechanism, energy consumption can be realized by fully utilizing excellent plastic deformation performance of a metal material when the energy consumption pipe assembly is subjected to torsional deformation, the energy consumption pipe assembly is in a pure torsional stress state during working, a uniform shear stress field exists in the energy consumption pipe assembly, the situation that the bearing capacity and the fatigue performance are affected due to local buckling is not prone to occur, and the working stability and reliability are guaranteed.

The invention provides a shear wall frame. The shear wall frame is characterized in that the shear wall frame comprises a corrugated plate, a frame and shear pieces. The corrugated plate is arranged on the inner periphery of the frame, and the edges of the corrugated plate are connected with the frame. Concave parts and convex parts which are alternately arranged are arranged on any surface of the corrugated plate. The multiple shear pieces are distributed on the two sides of the corrugated plate, and all the shear pieces are connected with the corrugated plate and arranged in the different concave parts. The corrugated plate and the frame form a main body structure of the shear wall frame, when the shear wall is vibrated, the surface of the corrugated plate obliquely intersects with vibration perpendicular to the central plane of the corrugated plate, the wave crest firstly encounters vibration force, the oblique crossing angle of the vibration force of the wave crest of the corrugated plate perpendicular to the central plane of the corrugated plate is small, and the bearing capacity of the shear wall is improved.

The invention relates to a torsional electromagnetic damping power line anti-galloping device. The device mainly comprises a stator electromagnetic structure and a rotor electromagnetic structure. Thestator and the rotor are disc-shaped excitation parts or induction parts, the electromagnetic damping anti-galloping device is fixedly installed on a multi-split sub spacer clamped on a power line atpresent and is configured to absorb the galloping energy of the power line to generate damping to prevent the power line from galloping. The torsional electromagnetic damping anti-galloping device issimple in structure, easy to install, safe and reliable, low in cost and good in damping anti-galloping effect.

The invention discloses a damping spring vibration isolator device with expansion sleeves. The device comprises an upper bearing plate component, wherein the upper bearing plate component and a lower bearing plate component are connected with an upper sleeve and a lower sleeve for mounting a damper component; the upper and lower ends of the damper component are connected into the upper sleeve and the lower sleeve through the expansion sleeves respectively; the bottom of the lower bearing plate component is connected with a height adjusting component. A mounting and adjusting construction method of the damping spring vibration isolator device with the expansion sleeves comprises the following steps: assembling the damping spring vibration isolator device with the expansion sleeves; arranging the damping spring vibration isolator device with the expansion sleeves at an equipment foundation; adjusting height, releasing pre-compression of the spring and adjusting the height again. The damping spring vibration isolator device with the expansion sleeves can be locked after the upper and lower bearing plate components and the spring are assembled and the pre-compression is applied, and is convenient to assemble and reliable to connect; the length of the damper and the height of the vibration isolator are rational; the damping spring vibration isolator device with the expansion sleeves is adjustable in height; the mounting and adjusting construction method is simple and convenient; the precision is guaranteed; the construction efficiency is favorably improved; the construction period is shortened.

The invention discloses a buckling restrained brace with a tension and compression function and a design method thereof. The buckling restrained brace comprises an SMA rod, a buckling restrained member and a filling member. The design method comprises the following steps of determining a required SMA rod displacement stroke; determining a maximum strain and a maximum stress; determining a length of the SMA rod; determining a contact coefficient gamma between the SMA rod and the buckling restrained member rigidity; determining a minimum bending stiffness; and determining the bending stiffness of the buckling restrained member and the filling member. According to the buckling restrained brace, energy dissipation and self-resetting functions are realized by utilizing the SMA rod, and bucklingof the core SMA rod is restrained by utilizing the buckling restrained member, so that the tensile energy dissipation capability and the compression energy dissipation capacity of the SMA rod are fully utilized, and the construction cost of the structure is lower; and meanwhile, the length of the buckling restrained brace is large, which can adapt to the large displacement requirement of a seismic isolation system, the structure energy consumption capability is favorably increased, the excessive displacement is limited, the structure can automatically restore deformation after an earthquake,and the interruption time of the structure is reduced or even eliminated.

The invention relates to a clearance seal structure capable of sealing liquid and solid phases, and particularly relates to a clearance structure which realizes the sealing of liquid and solid mediums aiming at a high-speed grinding main shaft. Cooling liquid and solid particle impurities such as sand grains and the like, generated by grinding, exist at the outer end part of a grinding wheel main shaft during the processing of a high-speed grinding machine tool, and the clearance structure forms a sealing structure which prevents the cooling liquid and the solid particle impurities from entering the main shaft at the outer end part of the main shaft. In the structure, a sealing structure formed by a throttling chamber and a labyrinth clearance is formed based on the energy consumption theory of labyrinth clearance sealing and the force analysis conclusion of cooling liquid in the structure, thus the sealing is realized when the main shaft is still and rotating. The structure is assembled by a shaft sleeve, a bearing end cover with a plurality of circumferential throttling grooves and a bearing base, wherein the shaft sleeve is sheathed on the main shaft, the bearing end cover is arranged on the shaft sleeve, and the bearing base is fixed on a wall surface, thereby forming the throttling chamber and the labyrinth clearance; and the structure can be used for the sealing of the main shaft of a high-speed or super-speed grinding machine tool.

The invention relates to an asymmetric U-shaped belt corrugated perforated steel plate damper, and belongs to the technical field of civil engineering energy dissipation and shock absorption. The metal damper comprises two U-shaped energy dissipation parts which are horizontally and oppositely arranged, two perforated steel plates, an upper cover plate, and a lower cover plate. According to the asymmetric U-shaped belt corrugated perforated steel plate damper, based on the design concepts that multiple safety mechanisms are adopted, energy consumption elements can be replaced, the shear bearing capacity is improved, out-of-plane buckling is restrained, and multiple shear energy consumption mechanisms work cooperatively, the limitation of a traditional metal damper is broken through. The asymmetric design of the U-shaped energy dissipation parts is combined with the perforated steel plates to form the multiple safety mechanisms, so that the problem that the damper is not prone to generating plastic energy dissipation and needs to consume energy of a main body structure in a small vibration is solved. Therefore, the perforated steel plates can yield at multiple positions, the damperis stable in energy consumption performance, the shear capacity is improved, only energy consumption components need to be replaced after a vibration to recover the function, and economic benefits areobvious. The asymmetric U-shaped belt corrugated perforated steel plate damper develops towards the assembling direction, replacement is easy and convenient, arrangement modes are various, and the number of the energy consumption components can be flexibly increased or decreased according to actual conditions.

The invention discloses a connecting mode and structure of reinforced concrete hollow pipe pier joints based on steel plate connection. The connecting structure is mainly composed of a prefabricated pier segment, a steel plate, dampers, SMA rebars and SMA bolts; the prefabricated pier segment is a high-strength concrete pipe pier, and the vertical and horizontal bearing capacity of a connecting steel plate section is not lower than the corresponding bearing capacity of a pier segment section; a plurality of dampers are annularly arranged between the top surface of a bearing platform and the bottom surface of the steel plate; under the action of earthquake, a plastic hinge area is formed at the bottom of the pier, an upper connecting steep plate and a lower connecting steel plate can be opened and closed, a local swinging mechanism is formed by utilizing self-reset of the SMA bolts, and the energy consumption capacity is achieved; the dampers are stimulated to play a role, part of the earthquake energy is absorbed, the SMA bolts and the dampers are convenient for maintenance and replacement after the earthquake, under the action of the SMA rebars, the pier structure system has the function of self reset, and the damage of the plastic hinge area of the pier after the earthquake is reduced.

The invention discloses a double-layer reticulated shell structure with a circumferential-direction elbow-joint type composite vibration reduction support. The double-layer reticulated shell structureis mainly composed of dampers, elbow-joint type supports and circumferential-direction multi-segment restrained braces, and is suitable for a building structure with a large span. The dampers are combined with the elbow-joint type supports, the motion energy is dissipated by amplifying the displacement deformation by means of the elbow-joint type supports and good own energy dissipation and vibration reduction characteristics; and the restrained braces provide stiffness for a three-dimensional space structure. Under wind loads and earthquake excitations, the elbow-joint type dampers interactwith the multi-segment restrained braces to give play to separate advantages and realize full energy dissipation capacity, and the effective structural vibration reduction control technology is adopted to obviously reduce the damage degree of a large span space structure under the corresponding external excitation.

The invention discloses a stepped viscous-friction damper. The stepped viscous-friction damper comprises a top plate and a bottom plate, wherein a first end plate and a second end plate are vertically arranged between the top plate and the bottom plate at intervals; one end of a first friction assembly is fixedly connected with the first end plate, and the other end of the first friction assembly is embedded with one end of a second friction assembly in a crossed mode and fixedly connected with the second friction assembly through a fastener; the other end of the second friction assembly is fixedly connected with the second end plate; and a viscous assembly is arranged between the first friction assembly and the second friction assembly, one end of the viscous assembly penetrates through the first end plate, and the other end of the viscous assembly penetrates through the second end plate. According to the stepped viscous-friction damper, under a small load, the viscous assembly plays an energy dissipation role, can be reused and plays a role in the whole life cycle of the structure; under a large load, the friction assemblies and the viscous assembly jointly dissipate energy, and the energy dissipation effect of the damper is effectively improved; and under different magnitudes of seismic energy, energy consumption is achieved step by step, the purposes of shock absorption, buffering and energy dissipation are achieved, and the safety of the structure is ensured.

The invention discloses a suspension type composite tuning vibration reduction device and method, and belongs to the technical field of vibration reduction. According to the technical scheme, the suspension type composite tuning vibration reduction device comprises a frame body and a suspension mechanism which is arranged in the center of the frame body and can rotate relative to the frame body, and a mass ball is installed at the tail end of the suspension mechanism; a plurality of energy consumption units which are arranged at intervals in the circumferential direction of the suspension mechanism are fixed on the frame body; and each energy consumption unit comprises a damping cavity and a stirring mechanism arranged in the damping cavity, the stirring mechanisms are connected with the suspension mechanism through traction ropes, and the suspension mechanism can drive the stirring mechanisms to stir magnetorheological fluid filled in the damping cavities when swinging. According to the suspension type composite tuning vibration reduction device and method, the vibration response of a power transmission tower structure in all directions under the action of external force can be reduced, and the purposes of energy consumption and vibration reduction are achieved; and the natural vibration period of a mass pendulum can be adjusted.