106results about How to "With self-resetting function" patented technology

The invention relates to a small scale micro sound wall climbing robot based on vacuum absorption principle, comprising the vacuum generator installed on the displacement structure, and the sucker on the displacement structure, the said vacuum generator composed of drive generator single post plug pump and the film pump connected with it, and the two position three way valve. The said displacement structure is six leg walking structure, with each leg's drive joint made of the generator, harmonic decelerator installed at both ends of the generator and the planetary reducer connected to it and they are forming into a module with the umbrella gear connected to the planetary reducer, with both ends of the module linked with the passive pole through the joint with the machine, the sucker installed on the passive pole through the passive joint and connected to the two position three way valves. It is small in size, low in noise, free from cables. It has extensive applications.

The invention discloses a three-dimensional composite friction pendulum vibration isolator based on a nonlinear energy trap. Structural vibration frequency is staggered away from seismic oscillation dominant frequency and a large amount of seismic oscillation input energy is absorbed by using the characteristics of attenuation and absorption of vibration energy, absorption of vibration frequency bandwidth and the like existing in the nonlinear energy trap as well as a vertical vibration isolation disk-shaped spring, so that the multi-dimensional seismic response of a structure is reduced, and seismic hazards of building structures are prevented. The three-dimensional composite friction pendulum vibration isolator comprises a metal sliding sleeve, a disk-shaped spring, a polytetrafluoroethylene sliding joint, a nonlinear energy trap and pile caps, wherein the disk-shaped spring is arranged in the metal sliding sleeve; the polytetrafluoroethylene sliding joint is arranged on the disk-shaped spring; the polytetrafluoroethylene sliding joint is in relative sliding contact with an upper pile cap through a polytetrafluoroethylene coating; the side face of the nonlinear energy trap is connected with the disk-shaped spring through a rigid spring; the nonlinear energy trap is in rolling contact with a lower pile cap through a rolling shaft; sliding surfaces of the upper and lower pile caps are spherical surfaces. The three-dimensional composite friction pendulum vibration isolator is used for resisting possible violent earthquakes.

The invention discloses a method and a device for precisely positioning a large part of an airplane in place. The device is arranged in a transition part of connecting a positioner and the large part of the airplane; the positioner is a modularized unit which can realize motion in three mutual vertical directions and has high positioning precision and reliable work; through certain configuration, effective support and posture adjustment on the large part of the airplane can be formed. The device for precisely positioning the large part of the airplane in place has a positioner supporting plate; the bottom of the positioner supporting plate is provided with a sensor fixing bracket; the sensor fixing bracket is provided with four liner displacement sensors; the upper part of the positioner supporting plate is provided with a pressing plate; the top part of the pressing plate is provided with an emitter bracket; the emitter bracket is provided with a plurality of laser emitters; the inside of the positioner supporting plate is provided with a ball strut which is in interference fit and connection with an inner hole of the positioner supporting plate; the outer side of the positioner supporting plate is provided with a plurality of cylinders; and a piston rod of each cylinder is connected with a locking square cotter. The method and the device have simple operation, high positioning precision, good safety and reliable positioning algorithm.

The invention discloses a fabricated self-resetting prestressed concrete frame friction energy dissipation node which comprises a prefabricated reinforced concrete column, a prefabricated reinforced concrete beam, a column end pre-embedded steel plate, friction plates, beam end pre-embedded steel plates, non-boning prestressed steel stranded wires and prestressed steel stranded wire hole channels;the column end pre-embedded steel plate is welded with end plate anchoring steel bars and friction rail steel plates; the beam end pre-embedded steel plates are welded with shear bolt nails; bolt hole channels are reserved in the prefabricated reinforced concrete beam; high-strength bolts pass through the bolt hole channels in the upper end of the prefabricated reinforced concrete beam, connect the friction plates and the friction rail steel plates located at the top and the bottom of the prefabricated reinforced concrete beam with the column end pre-embedded steel plates together, and tighten the high-strength bolts to apply pressure. According to the invention, through the friction energy dissipation and the replaceable friction plates, a prefabricated fabricated concrete frame structure is endowed with excellent anti-seismic performance and self-reset capability under high-intensity earthquakes.

The invention discloses a non-stick overvoltage and under-voltage protector with a leakage protection function. The non-stick overvoltage and under-voltage protector comprises a box body and a control unit, wherein the control unit comprises a power circuit (1), a current sampling circuit (2), a voltage sampling circuit (3), a microprocessor (4), a key processing circuit (5), a working state indicating circuit (6), a magnetic relay driving circuit (7), a magnetic latching relay (8), a leakage mutual inductor (9), an energy-storage capacitor (10) and a chip peripheral circuit (11). According to the non-stick overvoltage and under-voltage protector with the leakage protection function provided by the invention, a power supply is switched on automatically when the power voltage restores to a normal voltage range after an under-voltage protection action is taken, so that the continuity of power supply is ensured, and the power supply quality is ensured; and after a leakage protection action is taken, the power supply is switched on automatically after a fault is cleared and a manual key is pressed for confirming, the power supply continuity is ensured, and personal safety is protected.

The invention discloses a support-free self-restoring earthquake-resistant and damping cast-in-place bridge. Each pier column is mainly composed of a double interface swing pier, a replaceable energy consumption device, a cohesive-prestress-free steel cable and an anti-shearing device, wherein the upper structure of the double interface swing pier is separated from the lower structure of the double interface swing pier. Each double interface swing pier comprises a concrete pier column body and local structure measures arranged at the pier bottom and the pier top of the pier column body and on the top surface of a bearing table. Each replaceable energy consumption device comprises an energy consumption steel bar, a pier column pre-buried steel bar, a bearing table pre-buried steel bar, a steel bar connecting sleeve and an anti-buckling steel sleeve. Each cohesive-prestress-free steel cable comprises a cohesive-prestress-free steel cable body, a fixed end anchorage unit, a stretching end anchorage unit and an attaching pier bottom overhauling channel. Each anti-shearing device comprises an anti-shearing anchor bolt, an anchor bar and a corresponding steel plate hoop. According to the support-free self-restoring earthquake-resistant and damping cast-in-place bridge, when an earthquake comes, bridge upper structure translation can be effectively limited, and the girder falling risk can be avoided; and meanwhile, the structural earthquake damage is reduced, the structural damage degree is relieved, the bridge structural property after a large earthquake is ensured to enable a bridge subjected to the earthquake can be quickly restored.

Provided in the invention is a prefabricated friction-energy-consuming self-resetting baffle communication node comprising node-domain rectangular steel tube concrete columns. A first baffle plate anda second baffle plate are arranged at the upper ends and the lower ends of the node-domain rectangular steel tube concrete columns respectively; and extending arms are arranged around the first baffle plate and the second baffle plate; H-shaped steel beams are arranged between the extending arms arranged in parallel between the first baffle plate and the second baffle plate; rubber gaskets are arranged between upper and lower flanges of the H-shaped steel beams and the extending arms; and the H-shaped steel beams and the node-domain rectangular steel tube concrete columns that are arranged inopposite are connected by high-strength prestressed steel strands with cables. The flange-included node-domain rectangular steel tube concrete columns are arranged at the top of the first baffle plate and the bottom of the second baffle plate. According to the prefabricated friction-energy-consuming self-resetting baffle communication node, the installation error is reduced; the prefabrication ofthe factory is realized; the node quality is improved; the node has the self-resetting function; the post-earthquake maintenance costs are lowered; and the anti-seismic capacity is enhanced.

The invention discloses an anti-pulling three-dimensional rubber friction-pendulum earthquake-isolation support. The anti-pulling three-dimensional rubber friction-pendulum earthquake-isolation support comprises two concave-surface discs correspondingly arranged up and down, a rubber interlayer pad arranged between the two concave-surface discs and two earthquake-isolation discs arranged on the upper side of the concave-surface disc at the upper portion and arranged on the lower side of the concave-surface disc at the lower portion respectively; the upper side and the lower side, in contact with the two concave-surface discs, of the rubber interlayer pad are each provided with a friction slice, vertical belleville springs are connected between the concave-surface discs and the earthquake-isolation discs, first pulling cables are connected between the opposite inner sides of the two concave-surface discs, and second pulling cables are connected between the opposite inner sides of the two earthquake-isolation discs. The anti-pulling three-dimensional rubber friction-pendulum earthquake-isolation support is combined with the advantages of a rubber support and a friction-pendulum support, and the curvature of the rubber interlayer pad and the friction coefficient of a friction pendulum are designed respectively to achieve the advantages of multistage fortifying earthquake isolation; the pulling cables can provide vertical pull for improving the anti-pulling performance of the support, the vertical earthquake-isolation discs can isolate vertical earthquake motion to meet the three-dimensional earthquake-isolation requirement, and the anti-pulling three-dimensional rubber friction-pendulum earthquake-isolation support is more suitable for practical engineering and is convenient to apply and popularize.

The invention provides a double-tuned liquid column damper, and belongs to the technical field of damping and vibration isolation of structural works. The double-tuned liquid column damper comprises horizontal sliding devices (1), a lower-layer horizontal spring (2), a U-shaped water tank (3), a water tank damping hole (4) and liquid (5) inside the U-shaped water tank (3). The U-shaped water tank (3) oscillates back and forth in the main vibration direction of a structure and is hung or supported at the maximum structural vibration displacement position of the building through the horizontal sliding devices (1), and returns through the lower-layer horizontal spring (2) connecting the U-shaped water tank (3) and the building structure. The water tank damping hole (4) is formed in the bottom of the U-shaped water tank (3), and the liquid (5) inside the U-shaped water tank (3) generates damping through the water tank damping hole (4) to consume vibration energy of the structure. The double-tuned liquid column damper can be used for both vibration control over a newly built building structure and reinforcing maintenance of existing works, and can produce high economic benefit and social benefit.

The invention discloses a variable-damping variable-rigidity viscoelasticity-friction composite damping device. The variable-damping variable-rigidity viscoelasticity-friction composite damping devicecomprises two symmetric cylinder type viscoelasticity damping device units and two cylinder type friction damping device units, the friction damping device units sleeve the outer sides of the cylinder type viscoelasticity damping device units, the cylinder type viscoelasticity damping device units sequentially comprise annular inner steel cylinders, annular viscoelasticity material layers and annular middle steel cylinders from inside to outside, elastic elements are sleeved with the middles of the annular inner steel cylinders, closed steel plates are mounted on two ends of the annular innersteel cylinders, cylinder viscoelasticity materials are mounted on inner sides of two ends of the annular middle steel cylinders, connecting anchorage steel plates are mounted on two ends of the annular middle steel cylinders, the friction damping device units sequentially comprise annular middle steel cylinders, annular friction pieces, annular friction plates and annular outer steel cylinders from inside to outside, the annular friction plates comprise first annular friction plates and second annular friction plates, and each annular outer steel cylinder is formed through connecting of an upper half annular outer steel cylinder and a lower half annular outer steel cylinder through bolt assembling.

The invention discloses an energy dissipation self-reset anti-seismic retaining block structure for a bridge. The structure comprises a cap beam and a beam body, seismic mitigation and absorption supports are arranged on the top surface of the cap beam, the beam body is supported on the seismic mitigation and absorption supports, and retaining blocks are arranged at two ends of the cap beam respectively. A flat end of a concave steel plate with a projection portion having a through hole in the width direction is fixedly embedded into each retaining block, a hinge dowel penetrates holes of each concave steel plate and a corresponding turnover steel plate to connect the two to form a movable hinge, a projection portion of each turnover steel plate is provided with the through hole, and a flat end of each turnover steel plate is provided with a slope. A steel plate with a suspension arm end identical to the corresponding turnover steel plate in slope angle is welded to a beam body embedded part, a plurality of springs are arranged at the end of each turnover steel plate, and each turnover steel plate and the cap beam are connected together through the springs. Under seismic action, seismic energy dissipation and self reset of the beam body can be realized by the movable hinges and the springs, beam falling accidents are reduced, and seismic performance of a bridge structure is improved.

The invention discloses a shape memory alloy self-restoration rubber damper which comprises an upper main plate and a lower main plate paired with the upper main plate. The upper main plate and the lower main plate are symmetrically distributed up and down. The upper main plate is connected with a pair of upper auxiliary plates, and the lower main plate is connected with a pair of lower auxiliary plates. The upper auxiliary plates and the lower auxiliary plates are connected in an inserted mode. Two rubber plates are arranged between the upper auxiliary plates and the lower auxiliary plates. The inner sides of the upper auxiliary plates are provided with a hyperelastic shape memory alloy wire. A pair of drums is separately connected with the left side and the right side of the lower portion of the upper main plate, and a pair of pistons sleeved with the pair of drums is separately connected with the left side and the right side of the upper portion of the lower main plate and reciprocates in the drums. By adoption of the shape memory alloy self-restoration rubber damper, the problems that a building or a structure inclines and collapses due to the fact that dynamic response is caused by earthquake action or a wind load are solved; the shape memory alloy self-restoration rubber damper is simple in structure, convenient to construct, economical, practical and capable of effectively reduce structural dynamic response; self restoration can be achieved, the purpose of reinforcement is achieved, and the resistance capacity of civil engineering under earthquake action and dynamic loads such as the strong wind load is improved; and the shape memory alloy self-restoration rubber damper is high in energy dissipation capacity.

The invention relates to an energy dissipation and seismic mitigation type landslide pile-anchor supporting system suitable for a strong earthquake area. The energy dissipation and seismic mitigationtype landslide pile-anchor supporting system suitable for the strong earthquake area comprises an anchor cable anti-slide pile; the anchor cable anti-slide pile is composed of an anti-slide pile body,an anchor cable free section and an anchor cable anchoring section; and the anti-slide piles are anchored in a stable rock-soil body; the energy dissipation and seismic mitigation type landslide pile-anchor supporting system suitable for the strong earthquake area further comprises an energy dissipation and seismic mitigation device and a seismic mitigation material layer; the anchor cable free section and the pile top of the anti-slide pile are connected together through an energy dissipation and seismic mitigation device; the seismic mitigation material layer is arranged between the anti-slide pile and a slide body, and the anchor cable anchoring section and the deep stable rock-soil body are bonded into a whole through a drill hole. Compared with the prior art, the energy dissipation and seismic mitigation type landslide pile-anchor supporting system suitable for the strong earthquake area has the advantages that under the earthquake action, through reciprocating deformation of a high-strength compression spring and high-strength U-shaped steel, the energy of earthquake motion is consumed, the allowable deformation of the anchor cable free section is improved, the stress concentration of the anchor head part can be effectively reduced, the anchor head is prevented from losing efficacy, and the rock-soil body and the anchor cable are allowed to deform greatly under the earthquake load.

The invention relates to the technical field of steel-concrete composite structure in construction engineering, in particular to a replaceable self-resetting fabricated connecting joint and a construction method. The connecting joint comprises a prefabricated steel pipe concrete column and two prefabricated beams. The prefabricated beams are positioned on two sides of the prefabricated steel pipeconcrete column. Terminal plates are in contact with the prefabricated steel pipe concrete column. The prefabricated beams are provided with the terminal plates, steel sleeves and reinforced ribs. Rigidity of the beam ends of the prefabricated beams is improved; the condition of brittle fracture caused by plastic hinge generating at the beam end joint position under the action of an earthquake iseffectively prevented; beam columns adopt energy consumption rebars and prestressing tendons for connection, the energy consumption rebars can consume and dissipate energy during the earthquake, quickreplacement can be achieved after the earthquake; and repairing efficiency is improved; the prestressing tendons keep elasticity in the rare earthquake, and play a role of self-resetting after the earthquake. The replaceable self-resetting fabricated connecting joint and construction method achieve building industrialization, is free of welding and wet work on the construction site, and has the advantages of being excellent in earthquake resistance, environmentally friendly, excellent in component quality, convenient to construct, little in damage after the earthquake, replaceable and self-resetting.

The invention provides an assembly type self-resetting concrete frame low-damage joint with a modularized energy dissipation part. The assembly type self-resetting concrete frame low-damage joint comprises a prefabricated reinforced concrete column, a prefabricated reinforced concrete beam, a column end pre-embedded steel plate, a beam end pre-embedded profile steel sleeve, a soft steel damper, anunbonded prestressed steel strand, a prestressed steel strand pore channel and high-strength reamed hole bolts, wherein one side of the column end pre-embedded steel plate is an anchoring end and theother side of the column end pre-embedded steel plate is a column end butt joint plate; a shear key is welded on an inner wall of the beam end pre-embedded profile steel sleeve; a beam end butt jointplate is arranged at a beam end profile steel web. The soft steel damper is arranged at the beam end profile steel web and is fastened at two sides of the web through the high-strength reamed hole bolts; and beam column components are connected through the prestressed steel strand.

The invention relates to an orthogonal plywood shear wall-concrete core tube mixed lateral-load-resistance system. The system includes an orthogonal plywood shear wall, a concrete core tube, replaceable energy-dissipation connectors, a concrete foundation, prestressing swing supports, a first post-tensioned unbonded prestressing bar, a second post-tensioned unbonded prestressing bar, a first steelshim and a second steel shim. The orthogonal plywood shear wall is connected with the concrete core tube through the several replaceable energy-dissipation connectors, the concrete core tube is connected with the concrete foundation through the first steel shim, the second steel shim and the several prestressing swing support, the first post-tensioned unbonded prestressing bar runs through the concrete core tube longitudinally and is fixed by an anchorage device, and the first post-tensioned unbonded prestressing bar runs through the orthogonal plywood shear wall longitudinally and is fixed by an anchorage device and the second post-tensioned unbonded prestressing bar runs through the concrete core tube longitudinally and is fixed by an anchorage device. Compared with the prior art, the system can effectively reduce the damage of orthogonal plywood wallboards and concrete shear walls in an earthquake, energy-dissipation components are easily replaced, and the difficulty and cost of post-earthquake repair can be reduced.

The invention provides an electric valve actuator and a control method. The electric valve actuator comprises an electric valve actuator and a control device, wherein the control device comprises a single-chip microcomputer, a control input module, a control interface module, a power supply module, a self-reset power supply module, a driving module, a stepping motor, a digital-to-analogue conversion module, and an RS485 communication module; the single-chip microcomputer is used for acquiring temperature signals, current input signals, voltage input signals, pressure transmitter signals and reset control signals; the control interface module is used for displaying the valve state and outputting user control signals to the single-chip microcomputer; the single-chip microcomputer outputs control instructions to the driving module according to the received signals, and outputs the current output signals and the voltage output signals to the digital-to-analogue conversion module; the control instructions include control driving instructions and reset instructions; and the power supply module is used for supplying electricity to the single-chip microcomputer and the driving module. According to the electric valve actuator disclosed by the invention, the route switch of the electric valve actuator is changed along with the change of input voltages, current, temperature and voltages, so that the electric valve actuator has a self reset function.

The invention discloses a frame structure with a self resetting function. The frame structure comprises two I-shaped columns, a T-shaped upper rod, a T-shaped lower rod and at least one energy-consuming connection piece. The two I-shaped columns are vertically placed on a concrete foundation; each stiffened rib plate is connected with the concrete foundation through a prestressed bar; the T-shaped upper rod is hinged to the two I-shaped columns through upper lug plates of upper end plates of the two ends of the T-shaped upper rod; the T-shaped lower rod is hinged to the two I-shaped columns through lower lug plates of lower end plates of the two ends of the T-shaped lower rod; the T-shaped upper rod and the T-shaped lower rod are arranged in up-down parallel in a spaced mode; and an upper web of the T-shaped upper rod and a lower web of the T-shaped lower rod are connected through the at least one energy-consuming connection piece. Compared with a traditional steel frame, the frame structure has the self resetting function.

The invention belongs to the field of shield tunnel shock absorption, and particularly discloses a self-resetting energy dissipation device for shield tunnel shock absorption. The device comprises steel core outer rings, waterproof gaskets, rubber gaskets and shape memory alloy rings, wherein the inner sides of the steel core outer rings are provided with inclination angles, and the outer sides ofthe steel core outer rings are provided with grooves; the waterproof gaskets are fixed in the grooves in the outer sides of the steel core outer rings, and the rubber gaskets attach to the outer sides of the waterproof gaskets and the steel core outer rings; the shape memory alloy rings are installed between the two steel core outer rings, and the surfaces of the shape memory alloy rings attach to the inclination angles at the inner sides of the steel core outer rings; and when external force is applied, the distance between the two steel core outer rings is compressed, the shape memory alloyrings deform due to extrusion of the steel core outer rings, expand outwards and generate restoring force at the same time, so that energy is dissipated, and the structure of the device is enabled toreset. The device has a good buffering effect, can dissipate energy, can also provide the restoring force, and plays a role in self-resetting after an earthquake, and thus the maintenance and replacement cost of a tunnel is reduced.

The invention discloses a bridge main cable saddle with a self-returning function. The bridge main cable saddle with the self-returning function comprises a base and a saddle main body, wherein the bottom of the saddle main body is connected with a rotating seat; the rotating seat is in sliding fit with the base; and the fitting surfaces of the rotating seat and the base are arc surfaces. The invention is advantaged in that the saddle realizes a certain longitudinal slip capacity; when the difference between main span loads on the two sides is large, the stress is redistributed through relative slip between a main saddle and a middle tower so that the anti-slip safety of a main cable satisfies standard requirements; and meanwhile, the requirements on the structural rigidity of the middle tower are reduced so that it is possible to design the middle tower according to a reinforced concrete main tower; and for a multi-span suspension bridge, the construction cost can be saved and the later-stage maintenance amount can be reduced.

Disclosed is a beam end controllable energy dissipation plastic hinge. The beam end controllable energy dissipation plastic hinge comprises a mechanical hinge; disc spring self-resetting devices are arranged on the inner sides of the upper end and the lower end of the mechanical hinge; and friction energy dissipation devices are arranged on the front end face and the rear end face of the mechanical hinge. The structure can be induced to form a reasonable damage mechanism under the earthquake action, the anti-seismic performance of a fabricated concrete frame structure is improved, passive control over the structure under the earthquake action is achieved, the purpose that the structure function can be recovered is achieved, and rapid development of the fabricated concrete frame structure is promoted.

The invention discloses a space amphibious vector propeller, belongs to the technical field of space amphibious vehicles, and aims to solve the problems existing in the prior art. The space amphibiousvector propeller comprises a supporting machine frame, a shaft-less underwater propeller, a vector propulsion control device, an air propulsion device, a propulsion conversion device, a propeller fixing device and a waterproof connector, wherein a spherical groove formed by the shaft-less underwater propeller and the supporting machine frame forms a spherical surface pair; the vector propulsion control device drives the shaft-less underwater propeller to rotate; the air propulsion device comprises an air propeller arranged in an upper machine frame, a propeller shaft with one end connected with the air propeller in a threaded mode, and a limiting block fixedly connected to the other end, penetrating through the shaft-less underwater propeller, of the propeller shaft; the propulsion conversion device is arranged in the upper machine frame, and the conversion of air and underwater propulsion is achieved through the propulsion conversion device; the propeller fixing device is arranged inthe upper machine frame, and fixing or loosening of the air propeller retracted in the upper machine frame is conducted through the propeller fixing device; and the waterproof connector is arranged in a lower machine frame, and the transmission of propeller signal and energy is achieved through the waterproof connector.