61results about How to "Protect structure security" patented technology

The invention relates to a friction-mild steel composite damper. The friction-mild steel composite damper comprises a shear energy dissipation steel plate, steel angles and a friction plate, wherein the steel angles are installed on the two sides of one end of the shear energy dissipation steel plate respectively, the friction plates are installed between one edge, in the vertical direction, of each steel angle and the shear energy dissipation steel plate, and the shear energy dissipation steel plate, the steel angles and the friction plates are connected and subjected to pretightening force adjustment through a connecting and adjusting mechanism so as to change the sliding friction force between the friction plates and the shear energy dissipation steel plate. The friction-mild steel composite damper is self-adaptive to the uncertainty of earthquake action, can achieve phased operation, is mainly used for energy dissipation and seismic mitigation of civil engineering structures, and can reduce dynamic response and damage accumulation of the engineering structures under earthquake action. When the friction-mild steel composite damper is installed between building structural layers or between a bridge structure box girder and a pier, the friction-mild steel composite damper can automatically select and execute a proper work mode under earthquake action with different intensity levels, so that the earthquake response of the structures is controlled and the safety of the structures is guaranteed.

The invention belongs to the field of buildings and relates to a laminated rubber support seat. The laminated rubber support seat comprises an upper connecting member (1) and a lower connecting plate (2), wherein the upper connecting member (1) is positioned above the lower connecting plate (2); a stressed rubber gasket layer (4) is arranged in the upper connecting member (1); a shear press rubber gasket layer (5) is arranged between the upper connecting member (1) and the lower connecting plate (2); and the stressed rubber gasket layer (4) is fixedly connected with the shear press rubber gasket layer (5) through pulling and tying a steel stranded wire (7). When earthquake occurs, the shear press rubber gasket layer can generate vertical and horizontal deformation to bear an upper structure load and a vertical earthquake pressure; and the stressed rubber gasket layer bears the vertical earthquake tensile force generated at the support seat, so that the seismic isolation effect of a seismic isolation support seat can be achieved and the rubber support seat is prevented from being damaged when the support seat generates the tensile force.

An ocean platform crane comprises a foundation pillar (3), a slewing bearing (4) and a rotary table (5). The foundation pillar (3) is of a hollow structure with two ends open, the bottom of the foundation pillar (3) is fixed onto a platform (1), a through hole is arranged in the middle of the rotary table (5), the rotary table (5) is rotatably matched with the foundation pillar (3) through the slewing bearing (4), the inner diameter of the through hole of the rotary table (5) and the inner diameter of the foundation pillar (3) are larger than the outer diameter of a pile leg (2), the lower portion of the pile leg (2) penetrates through the rotary table (5) and the foundation pillar (3), and safety gaps are reserved between the pile leg (2) and the inner wall of the rotary table (5) and between the pile leg (2) and the inner wall of the foundation pillar (3). The foundation pillar is of the hollow structure with the inner diameter larger than the outer diameter of the pile leg, and the pile leg is arranged in the foundation pillar, so that valuable space of the platform is saved, structural arrangement on the platform is facilitated, a boom cannot contact with the pile leg when the crane slews, normal operation of the crane is guaranteed, and structural safety of the crane and the pile leg is protected.

The invention discloses a ship unloading method of a bridge crane at a shallow water wharf. Ship unloading track beams are used for compensating for the height difference between the shallow water wharf and a transport chip; bridge crossing track beams are mounted between the ship unloading track beams and the transport ship; ro-ro trolleys are mounted at the position where a cart walking mechanism is demounted; a winch and a pulley set are used for controlling movement of the bridge crane on the ship unloading track beams, and the bridge crane shifts in place; vertical movement of anchoring brackets on the side face of a lower cross beam is controlled by jacking devices; the jacking devices achieve jacking up, the ro-ro trolleys and wharf tracks are demounted, and the cart walking mechanism is mounted and restored; the jacking devices descend till walking wheels of a cart fall into the wharf tracks; and after the jacking devices are moved away, the whole ship unloading work is completed. According to the ship unloading method, the stability of the bridge crane in the horizontal and vertical movement process during ship unloading can be kept, the structure stability and reliability during height decrease can be guaranteed, the bearing requirement of the shallow water wharf can be met, and gravity loads of the bridge crane are transmitted to wharf pile foundations and other stress structures through ship unloading tracks.

The invention discloses a damper with an assembled structure. The damper comprises a first clamping plate module, a second clamping plate module, a damping bar module and a pin module, the first clamping plate module comprises a first connecting plate and a plurality of first clamping plates, the first clamping plates are fixed on one side of the first connecting plate at intervals, the other side of the first connecting plate is used for fixedly connecting with a beam structure, the second clamping plate module comprises a second connecting plate and a plurality of second clamping plates, the second clamping plates are fixed on one side of the second connecting plate at intervals, the other side of the second connecting plate is used for fixedly connecting with a column or a wall, the damping bar module is fixed on the first clamping plates and the second clamping plates in a penetrating manner, the pin module is fixed on the first clamping plates and the second clamping plates in a penetrating manner, and at least one first clamping plate is fixed between two adjacent second clamping plates. The damper with the assembled structure is small in volume, cost is saved, elastic rigid connection of joints under small seism can be ensured, plastic varying rigid connection of the joints under large seism can be ensured, energy consumption actions of the damper are achieved, seismic force applied to the structure is decreased, and safety of the main structure is protected.

The invention relates to the technical field of ship fittings, in particular to an anti-collision device for a stem of a park yacht based on non-Newtonian fluid. The anti-collision device solves the problem that an existing anti-collision device for a stem of a yacht is not high in protection. The anti-collision device comprises a fixing frame, wherein the fixing frame is in an arc shape, a positioning pin is fixedly connected to the middle portion of the inner side of the fixing frame, an anti-skid pad is fixedly connected to the inner side of the fixing frame, a protective bag is fixedly connected to the outer side of the fixing frame, and the inner portion of the protective bag is filled with the non-Newtonian fluid. According to the anti-collision device, when the stem of the yacht isimpacted, the non-Newtonian liquid shows the characteristics of being as strong as steel under the instant impact, the anti-collision performance of the anti-collision device is maintained, a certaindegree of protection is brought to the personal safety of the yacht, and the damage to the stem caused by the impact is reduced.

The invention belongs to the field of bridge vibration control in civil engineering, and particularly relates to a laminated magneto-rheological high damping elastomer single core support. The supportcomprises an upper steel disc, a lower steel disc, a laminated supporting mechanism and a lead core arranged at the upper steel plate, and an excitation mechanism arranged at the lower steel disc. The laminated supporting mechanism is cylindrical, and a round hole used for the lead core to penetrate is formed in the center of the laminated supporting mechanism. The laminated supporting mechanismis formed alternate vulcanization of the magneto-rheological elastomer and a steel plate. The excitation mechanism comprises an excitation coil, a reeling bracket and an iron core. The excitation coilis wound to the iron core by the reeling bracket. A round hole is formed in the middle of the iron core, and is used for positioning the lead core. The the lead core is fixed to the middle of the laminated supporting mechanism and the iron core, and therefore the positioning accuracy of the whole structure is guaranteed, and firmness of connection is improved. When shearing deformation of the support occurs, shearing deformation of the whole lead core occurs forced by the laminated supporting mechanism and the iron core, and therefore energy dissipation is achieved, and damping and rigidity of the support is improved overall.

A series acceleration inert energy dissipation device comprises a rotating unit, an eddy current unit and an additional mass unit. Operation of the rotating unit promotes synchronous operation of the eddy current unit. The rotating unit comprises a left outer cylinder, the outer cylinder comprises a left ball screw, an external thread of the left ball screw is connected with an internal thread in the left outer cylinder, and axial movement is achieved. The two-node mass unit absorbs energy, the eddy current unit dissipates the energy, the series acceleration inert energy dissipation device has better frequency domain applicability, can be serially connected with an elastic unit, has a certain tuning function and is free from sealing requirements, high in energy dissipation efficiency and excellent in energy dissipation performance, structural safety can be more effectively protected, and vibration energy of an earthquake, wind vibration, human-induced excitation and the like can be dissipated. The left outer cylinder and a right outer cylinder are serially connected and contact with each other through a rotary friction surface, and additional two-node mass efficiency increase is obvious. Compared with a traditional eddy current damper, the series acceleration inert energy dissipation device is higher in efficiency by the aid of the friction surface and eddy current energy dissipation.

The invention belongs to the technical field of smoke energy recovery, and relates to a novel smoke gas turbine power generating device, in particular to a device for directly converting smoke gas energy into electric energy. The novel smoke gas turbine power generating device specifically comprises a smoke gas turbine system, a power generator system, a pressure changing system and a pressure stabilizing system. The smoke gas turbine system is provided with a high-temperature pressurized wet smoke gas inlet pipeline and a smoke gas outlet pipeline. The smoke gas turbine system is connected with the power generator system. The power generator system is connected with the pressure changing system. The pressure changing system is connected with the pressure stabilizing system. According to the novel smoke gas turbine power generating device, a turbine can be directly driven by high-temperature pressurized wet smoke gas, the power generating device is driven to generate electric energy for industrial production and life, and therefore the problems of the technological state and structure of an existing power generating device are solved, and the miniaturization and integration of thesmoke turbine power generating device are realized.

The invention discloses a double side air bearing load reducing environment-friendly sound barrier. The double side air bearing load reducing environment-friendly sound barrier solves the problems that a sound barrier in the prior art is insufficient in noise lowering effect and the service life of the sound barrier is shortened due to air loads, and has the effects that sound insulating and noiselowering can be achieved on the two sides of a road, meanwhile, self-adaptive load reducing for double side incoming air is achieved, and the safety of a barrier body is guaranteed. According to thetechnical scheme of the sound barrier, a plurality of layers of first unit plates are included; a plurality of first unit plates are arranged in each layer; the front sides and the back sides of everytwo adjacent first unit plates are installed in a staggered manner; the first unit plates are rotationally connected with a supporting framework; when side air comes for attack, the first unit platesinstalled downwind can rotate around the supporting framework and an unloading channel is opened, and strong air unloading is achieved; and the first unit plates installed against the wind can be kept in the vertical state, and the sound insulating and noise lowering effect is guaranteed.

The invention relates to a bridge pier-ship collision monitoring system, and belongs to the field of bridge monitoring and protection. The bridge pier-ship collision monitoring system comprises a plurality of self-sensing rubber fenders mounted on piers and a monitoring main box; and each self-sensing rubber fender is composed of rubber and a rubber-based collision sensor fixed thereto, wherein the body of the rubber-based collision sensor is an electrode assembly composed of an upper electrode, a lower electrode and a rubber-based quantum tunneling effect composite material therebetween. Thesystem analyzes the area where the sensor electrical signal is different from the normal value when accidents occur by partition arrangement of the self-sensing rubber fenders around the piers, can accurately locate the ship-bridge collision, judge the damage condition of the bridge pier, and provide convenience for the follow-up work of the accident. During the working, the self-sensing rubber fenders can buffer the energy of the bridge-ship collision and protect the structure of the piers. When not in operation, the system is in an open-circuit state, thereby having the advantage of energy saving.

The invention relates to a high-efficiency condenser for industrial heat exchange. The high-efficiency condenser comprises a barrel body; a barrel cover is installed on the barrel body; a circulationinlet is reserved in the top of the barrel cover; an opening cover is installed at the outer side of the circulation inlet; a clamping rod penetrates through the inner side of the opening cover; a rear plate is fixed to the outer wall of the circulation inlet; the bottom of the rear plate is provided with a limiting groove; a circulating barrel is arranged inside the barrel body; the upper part ofthe circulating barrel is provided with a cooling water outlet; the lower portion of the cooling water outlet communicates with the circulating barrel; the side surface of the circulating barrel communicates with a cooling liquid inlet; and a circulation outlet is reversed in the lower portion of the middle position of the barrel body. Compared with an existing high-efficiency condenser for industrial heat exchange, the high-efficiency condenser for industrial heat exchange provided by the invention can prevent the phenomenon of relatively large shake caused by gravity or external force influences during running of the barrel body, can realize closed management of the barrel body, effectively prevents dust from entering the barrel body and protects the structural safety of the opening cover.

Provided is a pipeline seismic mitigation and absorption device. The device comprises a structural hoop, an upper pipe support, a lower connecting part and an energy-consuming assembly, wherein the upper pipe support is connected with the structural hoop and fixes a pipeline through the structural hoop, the lower connecting part is fixed with a pipeline support, a longitudinal side and a lateral side which are adjacent to the pipeline seismic mitigation and absorption device are provided with a displacement scale and an intelligent displacement acquisition system respectively, a laser displacement sensor is connected with a collector, and the collector is connected to a monitoring center in a wire mode or a wireless mode. The pipeline seismic mitigation and absorption device has a wide application range and is suitable for installation of horizontal and sloped pipelines; the upper pipe support is firmly connected with the pipeline, and the energy-consuming assembly has certain rigidity, yielding force, flexible energy consumption, resetting and carrying capacity, can achieve various ductile deformations and reduce the seismic response of an upper pipeline, have an obvious seismic mitigation effect, and can remotely observe and monitor the pipeline; the structure is simple, the installation and disassembly are convenient, the construction method is operated easily and conveniently, and the implement is easy.

The invention provides a noise detection device and a noise detection method. The device comprises a protective casing, a first clamping rod and a detection block. Baffles are installed on the two sides of the protective casing. Springs are mounted on the outer walls of the baffles. A telescopic plate is fixed on the right side of the outer wall of each spring. The first clamping rod is located inthe middle of the protective casing. A movable plate is installed below the first clamping rod. A first clamping block is installed in the middle of the movable plate. First sliding blocks are installed on the two sides of the movable plate. The detection block is located on the inner side of the protective casing. According to the noise detection device and the noise detection method, which areprovided by the invention, the device is simple in structure, convenient for users to carry and higher in practicability; the device is provided with a structure for preventing the device from being impacted by external force; the device can be prevented from being impacted and damaged by the external force; the service life of the device can be prolonged through double-structure heat dissipation;mounting and dismounting are easy and convenient; dust can be prevented from entering the device; the sound receiving effect of the device is improved; and the noise detection effect of the device isbetter.

The invention discloses a method for calculating vertical earth pressure and deformation of high-filled steel bellows culvert. Based on the consideration of vertical convergence deformation of steel bellows, the calculation method of vertical earth pressure of steel bellows culvert without load relief technique and the calculation method of vertical convergence deformation of steel bellows culvertwith load relief technique are proposed from the settlement of soil column in the plane of pipe top. The calculation method of vertical earth pressure of steel bellows culvert and the calculation method of vertical convergence deformation of pipe culvert with load relief technique are presented. The present invention can provide earth pressure calculation method for steel bellows pipe culvert design after conventional filling or load reduction measures under high fill, and also provides calculation method for vertical convergence deformation of pipe culvert. The earth pressure and deformationcalculation result are consistent with the actual situation, and the calculation method fills in the blank in the field at home and abroad. The load reduction design method provided by the inventioncan effectively reduce the vertical earth pressure on the culvert top, prevent the pipe culvert structure from producing large deformation, and simultaneously protect the safety and stability of the culvert structure.

The invention provides a shearing type steel truss connection beam with a friction damper for quick recovery after an earthquake. The shearing type steel truss connection beam comprises chord rods, diagonal web members and a friction damper. On the basis of a common steel truss connection beam, the friction damper is used for consuming energy, and comprises a friction main plate, a friction piece,a cover plate and friction-type bolts; the structure is simple, and construction is easy. Under a small earthquake, the shearing type steel truss connection beam with the friction damper does not slip, and is equivalent to the common steel truss connection beam, and lateral rigidity is provided for the structure; and under an medium earthquake, after reaching a starting-sliding load, the frictiondamper slips, the energy is consumed by friction, and most of the energy in the earthquake is consumed by the friction damper. According to the shearing type steel truss connection beam with the friction damper for the quick recovery after the earthquake, under the function of the earthquake, strength does not degrade, damage does not occur, the friction piece of the friction damper only needs checking and replacing after the earthquake, the shearing type steel truss connection beam has the advantages of low costs and timely use after the earthquake.

The invention discloses a variable-force viscous damper which comprises a main cylinder, sealing devices, a piston, a piston rod and damping media. The sealing devices are respectively mounted at two ends of the main cylinder, and an inner sealed cavity of the main cylinder is formed by the sealing devices; the piston capable of axially moving is arranged in the main cylinder; the piston rod penetrates the piston and the sealing devices and is fixedly connected with the piston; the sealed cavity is filled with the damping media; damping through holes are formed in the piston; damping long shafts are mounted in the damping through holes, and elongated slots are formed in the side walls of the damping long shafts; the elongated slots are divided into main elongated slots, first auxiliary elongated slots and second auxiliary elongated slots, and each first auxiliary elongated slot and the corresponding second auxiliary elongated slot are respectively formed in two ends of the corresponding damping long shaft; the depths of the two auxiliary elongated slots of each elongated slot are different from the depth of the main elongated slot of the elongated slot. The variable-force viscous damper has the advantages that external controllers and sensors can be omitted, generated force can be increased or reduced when the variable-force viscous damper moves to set positions according to requirements of working conditions, and building protecting effects still can be realized when vibration of the damper due to hazards such as earthquake or strong wind is over or under ranges specified by design specifications.

The invention discloses a process for jacking a continuous box girder incapable of releasing constraints at two ends at the same time. The process comprises the following steps: 1, releasing constraint at one end of the continuous box girder and setting a plurality of jacking points at the lower part of the continuous box girder; 2, arranging a jacking mechanism capable of performing jacking separately at each jacking point; 3, calculating and determining the jacking height of each jacking point, wherein the jacking heights H1, H2, H3, Hn-1 and Hn of the jacking points form a proportional linear relationship; 4, starting the jacking mechanisms, wherein the jacking points at the lower part of one end, with constraint, of the continuous box girder are not jacked and the other jacking points are correspondingly jacked to the heights H1, H2, H3, Hn-1 and Hn; 5, replacing or maintaining half or more of supporting seats close to one end, without constraint, of the continuous box girder and then resetting the jacking mechanisms and the continuous box girder; and 6, releasing constraint at the other end of the continuous box girder and repeating the steps. According to the process, the continuous box girder incapable of releasing the constraints at the two ends at the same time can be jacked and the supporting seats can be maintained or replaced, so that the safety of a continuous box girder structure is effectively protected.

The invention discloses a steel corrugated culvert pipe structure with an EPS (Expandable Polystyrene) load reducing plate, which comprises a foundation, a sand gravel cushion layer is paved on the foundation, a steel corrugated culvert pipe is arranged on the sand gravel cushion layer, a transverse EPS load reducing body is arranged on the upper end face of the steel corrugated culvert pipe, and soil filling layers are arranged on two sides and the upper end of the steel corrugated culvert pipe and the upper end of the transverse EPS load reducing body. The transverse EPS load reducing body comprises a plurality of stacked EPS veneers, the width of the EPS veneer on the lowest layer is larger than the maximum outer diameter of the steel corrugated culvert pipe, the EPS veneers are connected through a row of fixing long nails in the centers of the EPS veneers, and the lower ends of the fixing long nails are connected with the steel corrugated culvert pipe. The transverse EPS load-reducing body is arranged at the top of the steel corrugated culvert pipe and used for increasing the settlement deformation space of filling soil on the pipe top, the vertical EPS load-reducing bodies are arranged on the two sides of the steel corrugated culvert pipe, the transverse EPS load-reducing body and the vertical EPS load-reducing bodies conduct convergence deformation cooperative work, load reduction is conducted on the whole steel corrugated culvert pipe, the service life of the culvert pipe can be prolonged, and the service life of the steel corrugated culvert pipe is prolonged. The structural safety of the culvert pipe is protected.