32results about How to "Consistent stiffness" patented technology

The invention discloses an elastic supporting and vibration isolating device of a ship pipeline system. The device comprises three functional components including a pipe clamp vulcanization component,two low-frequency vibration isolating components and a limiting component; the pipe clamp vulcanization component comprises an upper hoop-type pipe clamp and a lower hoop-type pipe clamp; an upper lining is arranged on the inner wall of the upper pipe clamp; a lower lining is arranged on the inner wall of the lower pipe clamp; the two low-frequency vibration isolating components are fixedly mounted on two sides of the lower pipe clamp in a lifting manner; and each low-frequency vibration isolating component comprises a middle connecting arc plate, a low-frequency vibration absorbing rubber block, a vibration absorber base and a protecting cover. The device adopts the double-layer vibration isolating structure, the low-frequency vibration isolating components adopt 30-60-degree cut vibration absorbing rubber, the rigidity in the vertical direction, the transvers direction and the longitudinal direction is reduced, the three-dimensional equal rigidity is realized, and the vibration isolating effect is good. The whole vibration isolating device is compact in structure and is convenient and easy to mount and maintain. The device is particularly applicable to application occasions of ships having relatively high noise and environmental adaptation requirements.

The invention provides a rack for testing the anti-sinking rigidity of the side surface of a vehicle body. The rack comprises a chassis, and a vertical frame and an upright post which are fixedly connected with the chassis, wherein transverse beam mounting plates are connected with the vertical frame; two ends of a transverse beam are connected with the vertical frame through the transverse beam mounting plates; an actuator mounting seat is connected with the transverse beam in manner of adjusting the relative position; the actuator mounting seat comprises a fixing seat, a movable seat and a hinge pin; the fixing seat is fixedly connected with the transverse beam; the fixing seat is hinged with one end of the movable seat and can be fixedly connected with the movable seat; the other end of the movable seat is fixedly connected with an actuator; the actuator is connected with a test head; a force sensor is arranged between the test head and the actuator; and a transverse beam transformation displacement sensor is arranged between the upright post and the transverse beam and is used for testing the deformation of the transverse beam during a rigidity test. The rack is simple in structure, easy to operate, high in adaptability and low in cost, and can effectively test the anti-sinking rigidity of the side surface of the vehicle body.

The invention discloses a conversion type friction pendulous shock absorption and isolation support, and relates to the technical field of bridges. The support comprises a hyperboloid body, a spherical wear-resistant sliding plate I and a spherical wear-resistant sliding plate II are connected to the upper curved surface and the lower curved surface of the hyperboloid body respectively, an upper pendulum and a lower pendulum are arranged on the upper portion and the lower portion of the hyperboloid body respectively, a plane wear-resistant sliding plate is connected to the upper surface of the upper pendulum, a plane steel plate is arranged on the upper portion of the upper pendulum, a downwards arranged steel baffle is arranged at the end of the plane steel plate, a steel baffle ring which locks the upper pendulum is arranged on the lower pendulum, the steel baffle ring is fixed on the lower pendulum through an anti-shear pin, and an elastic body is arranged between the upper pendulum and the steel baffle; a bridge cannot be lifted, the bridge structure reciprocating lifting problem is solved, no relative movement is generated between all components under the normal working condition, and the problem that due to the fact that the spherical war-resistant plate is subjected to friction for a long time, the service life is greatly shortened is solved; the anti-shear pin is cut off under the E2 seismic working condition, relative movement can be generated between the components, and friction pendulous movement is formed.

The invention discloses a temporary reinforcement method for transverse partitioning construction of a steel box girder bridge. The temporary reinforcement method particularly includes the following steps that after transverse partitioning of steel box girders, the two sides of each girder block web are each provided with a diagonal bridging at the interval of one longitudinal reinforcement rib, and the girder block webs are arranged in the cutting positions of the steel box girders; and the fulcrums of the diagonal bridgings are arranged at the joints of transverse partitioning plates and top and bottom plates. After the diagonal bridgings are added, the longitudinal flexural rigidity and transverse torsional rigidity of each girder block basically keep consistent, so that the safety in the hoisting process is guaranteed. After the girder blocks are hoisted to a temporary support, the displacements of the girder blocks are basically consistent, and the displacement difference in the longitudinal welding position and the post-welding residual stress are reduced. The top and bottom plates are welded in a staggered mode, the fatigue stress of a welding seam is increased, and the construction safety of the structure is facilitated.

The invention discloses a detachable assembly type column and foundation ductile joint connection mode. A reinforced concrete column and a foundation, a steel structural connection piece with good ductility and hexagonal high-strength bolts are included. The steel structural connection piece is a hoop-shaped component which is manufactured by a steel mold, and vertical reinforcing ribs are weldedto the outer portion of the steel structural connection piece. The steel structural connection piece wraps a concrete block to form a square steel pipe concrete structure, holes corresponding to the positions of longitudinal ribs are formed in an upper end plate and a lower end plate of the square steel pipe concrete structure, and energy-consumable rubber threaded pipes are screwed into the holes; the tail ends of a column longitudinal rib and a column longitudinal rib in the foundation are subjected to tapping treatment, and are screwed into internal thread steel pipes and internal thread steel pipes with end plates arranged at the tail ends; and the three main components are connected through hexagonal screw rods. The joint connection mode is simple and convenient, dismounting is easy,industrialized production of the components can be achieved, the ductility and the energy consumption ability of the structure can be improved, the anti-shear ability of columns can be improved effectively as well, and the anti-seismic bearing ability of the columns is improved accordingly. The joint connection mode has the good disaster resistant ability, and the ideas of environmental protection, duration and sustainable development are reflected as well.

The invention belongs to an automobile safety protection device, in particular to an anti-collision beam buffering structure with a stiffness compensation function. The anti-collision beam buffering structure comprises an existing anti-collision beam and buffering devices connected with the existing collision beam through a first fastening buckle, a second fastening buckle, a third fastening buckle and a fourth fastening buckle. The buffering devices each comprise an upper connecting layer, a connecting layer with the buckles for connection, and a lower connecting layer sequentially from top to bottom. The connecting layers with the buckles are constituted by filling layers, and the number of the filling layers is determined by the size of an actual car type anti-collision beam. The connecting layers with the buckles comprise the filling layers with the corresponding number sequentially from top to bottom. The anti-collision beam buffering structure with the stiffness compensation function is simple in structure, convenient to mount, high in applicability and capable of effectively reducing collision impact force, and the problems that as for an existing safety protection structureon the front portion of a car, the anti-impact performance is poor, stiffness is inconsistent, and an anti-collision beam is prone to being damaged are solved.

The invention relates to a transverse stop for a rail train. The transverse stop comprises a top cover, a rubber part and a base; the top cover comprises a wearing plate and a mandrel coaxially arranged on the wearing plate, one end of the mandrel is fixed to the lower surface of the wearing plate, the other end of the mandrel is embedded to the top end of the rubber part, the outer wall of the upper portion of the rubber part contracts gradually from bottom to top, and an included angle is preset between the upper outer wall and the lower surface of the wearing plate; the bottom of the rubberpart is fixedly connected with the base, a groove is formed in the center of the bottom wall, a cavity is formed between the rubber part and the base in a defined mode, and an exhaust hole communicated with the cavity is formed in the base. The transverse stop for the rail train is capable of ensuring uniform rigidity of all turning angles when the train passes a small curve rail path and prolonging the service life of the train while ensuring comfort of the train.

The invention relates to a high-strength bamboo composite material movable house. The high-strength bamboo composite material movable house comprises a movable house frame and a cover layer laid on the movable house frame. The movable house frame is composed of a plurality of single frames arranged side by side, and cross beams connecting the neighboring single frame together; every single frame is composed of two vertical beams and two stand pillars, the upper ends of the two vertical beams are hinged through the corresponding cross beam, and the lower ends of the two vertical beams are hinged to the upper ends of the two vertical stand pillars through the corresponding cross beam; the cross beams, the vertical beams and the stand pillars are all rods made of bamboo composite materials. Compared with the prior art, the cross beams, the vertical beams and the stand pillars of the high-strength bamboo composite material movable house are the rods made of the bamboo composite materials, both ends of every cross beam are provided with threads, the bamboo composite material rods replace diagonal bracings and walls to form a structural anti-tilting system, and threaded connection at the ends of the cross beams replaces bolt connection, so that the material utilization rate can be improved, and low structural weight, uniform integral rigidity and high stability can be obtained.

The invention relates to a method for splicing a horizontal tip-hidden type long point rail and a horizontal tip-hidden type short point rail. The rail body of the long point rail 1 and the rail body of the short point rail 2 are connected through a bolt; the position of the long point rail clinging to the short point rail is cut for 2 to 5 millimeters according to inner obliquity of 1:3 to 1:5; in the range of the long point rail clinging to the short point rail, the working side of a railhead of the long point rail forms a chamfer angle of 45 DEG C; a clinging side of the short point rail has outer obliquity of 1:3 to 1:5 and clings to the long point rail; and the width of the tip of the short point rail is about between 3 and 5 millimeters. The method has the following advantages: the horizontal hidden tip of the short point rail is favorable for the robustness of the short point rail structure and shortens the unsmoothness of the geometric vertical direction of the turnout on the horizontal hidden tip; at the same time, the rigidity on two sides of the long and the short point rail components tends to be consistent, which is favorable for the operation of an electrical service switching system.

The invention discloses a locomotive side bearing finite element analogue simulation method and a simulation model, and the method comprises the steps: dispersing a side bearing contact surface into a plurality of side bearing contact surface finite element units through finite element simulation, and dispersing a rubber side bearing into a plurality of spring finite element units through finite element simulation, and each finite element unit node among the plurality of side bearing contact surface finite element units being connected with an independent spring finite element unit. The method solves the problems that in the prior art, stress near the contact position of the side bearing is inconvenient to accurately calculate, torque is inconvenient to transmit, and setting is complex.

The invention provides a monomer cylindrical multi-directional constant-stiffness all-metal vibration absorber which comprises a mounting shaft, an axial lower end limiting stopper, an axial upper end limiting stopper, an axial vibration reduction medium, a first shell, a second shell, a radial limiting stopper and a radial vibration reduction medium, wherein the axial and radial vibration reduction components are of mutually independent structures; the axial vibration reduction component is cylindrical; the radial vibration reduction component is annular; the axial vibration reduction component is arranged in the radial vibration reduction component. By virtue of the unique design method of the vibration reduction components, multi-directional constant stiffness can be realized, the purpose of ensuring mutually-independent axial and radial stiffness regulation can be achieved, and the axial and radial resonant frequency intercoupling problem is radically solved; by virtue of controlling the densities of the vibration reduction media in the vibration reduction components, the resonant frequency points can be accurately controlled, the difference between the axial resonant frequency and the radial resonant frequency is controlled within + / -0.5Hz, and the usage requirements of vehicles, ships, airplanes and rockets in various occasions and the requirements for the multi-directional constant-stiffness vibration isolation and long-term storage of various instruments are met.

The invention discloses a modular construction and assembly method of a boxcar bottom plate. The boxcar bottom plate comprises a floor, a front cross beam, a rear cross beam and side plates. Wherein the two ends of the front cross beam are connected with the two ends of the rear cross beam through side plates respectively, and the tops of the front cross beam, the rear cross beam and the two frames are fixedly connected with the bottom edge of the floor respectively. According to the method, the to-be-produced boxcar bottom plate is formed by combining the pre-produced modules with different sizes, so that the serialization production of the boxcar bottom plates with different sizes is conveniently realized, the mounting process can be simplified, and the production cost is reduced.

The invention belongs to the technical field of aircraft structure design, and particularly relates to a lateral rigidity design method for an aircraft large-opening structure. The method is realizedthrough the following steps: simplifying an airplane large-opening structure model; calculating the lateral bending rigidity EIz of the large opening structure of the aircraft; the lateral bending stiffness ratio of the aircraft non-opening structure is shown in the specification; the lateral bending stiffness ratio of the aircraft non-opening structure is shown in the specification; the lateral bending stiffness ratio of the aircraft non-opening structure to the lateral bending stiffness ratio of the aircraft non-opening structure to the lateral bending stiffness ratio is shown in the specification; and how to reinforce the structure under the condition of meeting the lateral stiffness requirement can be determined according to the expression of the lateral bending stiffness ratio.

The invention relates to the technical field of automobile manufacturing, and particularly discloses a steering gear impact test bed. The impact test bed comprises a drop hammer impact device, a sample piece fixing device and a pull rod holding device, wherein the sample piece fixing device is arranged below the drop hammer impact device, the sample piece fixing device can fix a steering gear sample piece according to a real vehicle state, and the rigidity of the sample piece fixing device is adjustable, so that the rigidity of the sample piece fixing device is consistent with that of a real vehicle front auxiliary frame system; the pull rod holding device is arranged on the sample piece fixing device, and the pull rod holding device is used for clamping a pull rod of the steering gear sample piece, so that accurate positioning of the pull rod during mounting of the steering gear sample piece can be realized, the positioning precision of the pull rod can be kept before impact, disconnection during impact can be realized to quickly release the pull rod, and free movement of the pull rod when the steering gear sample piece is impacted is realized. According to the steering gear impact test bed, the pull rod of the steering gear sample piece can be fixed at the same position during each impact test, so that the test scientificity and the test precision are ensured.

The invention provides a monomer cylindrical multi-directional constant-stiffness all-metal vibration absorber which comprises a mounting shaft, an axial lower end limiting stopper, an axial upper end limiting stopper, an axial vibration reduction medium, a first shell, a second shell, a radial limiting stopper and a radial vibration reduction medium, wherein the axial and radial vibration reduction components are of mutually independent structures; the axial vibration reduction component is cylindrical; the radial vibration reduction component is annular; the axial vibration reduction component is arranged in the radial vibration reduction component. By virtue of the unique design method of the vibration reduction components, multi-directional constant stiffness can be realized, the purpose of ensuring mutually-independent axial and radial stiffness regulation can be achieved, and the axial and radial resonant frequency intercoupling problem is radically solved; by virtue of controlling the densities of the vibration reduction media in the vibration reduction components, the resonant frequency points can be accurately controlled, the difference between the axial resonant frequency and the radial resonant frequency is controlled within + / -0.5Hz, and the usage requirements of vehicles, ships, airplanes and rockets in various occasions and the requirements for the multi-directional constant-stiffness vibration isolation and long-term storage of various instruments are met.

The invention provides a statical indetermination radar / antenna support dynamic leveling method which comprises the followings steps of a step S1 of setting a first gradienter and a second gradienter with indication directions which are mutually vertical on a rotary table; a step S2 of adjusting the indication directions of a radar / antenna on the rotary table to be horizontal; a step S3 of controlling the rotary table to rotate around an azimuth axis to enable the radar / antenna to direct to a plurality of positions, and respectively adjusting supporting legs on end portions of four horizontal landing legs to enable indication of the first gradienter to be horizontal when the radar / antenna directs to the plurality of positions; and a step S4 of continuously controlling the rotary table to rotate around the azimuth axis to enable the radar / antenna to direct to a plurality of positions, maintaining the indication of the first gradienter to be horizontal, and adjusting supporting legs on end portions of four horizontal landing legs to enable indication reading at each position of the second gradienter to be unanimous. The statical indetermination radar / antenna support dynamic leveling method enables the rotary table to be adjusted to be in a horizontal state under biggest gravitational torque, and then enables stiffness of each horizontal supporting leg to be adjusted to enable stress of each supporting leg to be unanimous.

The invention discloses a flange disc spring, a flange disc spring forming tool and a forming method. The flanging disc spring forming tool comprises an upper die fixing plate, an upper die plate, a lower die plate, a lower die fixing plate, a pressing plate and a guide plate. The upper die fixing plate is connected with the upper die plate in a welding mode. The upper die plate and the guide plate are connected up and down through screws. The lower die fixing plate is connected with the lower die plate in a welding mode. An inner blanking die, a positioning punch, an outer blanking die, a die spring and an upper forming die plate are fixed to the upper die plate. A limiting clamping shaft, a blanking female die and a lower forming die plate are arranged on the lower die plate. A spring mounting hole is formed in the lower die plate. A female die spring is arranged in the spring mounting hole, is arranged at the bottom of a blanking female die and has a blanking female die supporting and resetting effect. The blanking female die and the outer blanking die are opposite to each other up and down, and the lower forming die plate and the upper forming die plate correspond to each other up and down, so that the disc spring is formed at one time, flanging machining of the disc spring can be completed, and disc spring supporting is stable.

The invention discloses a detachable assembly type column and foundation ductile joint connection mode. A reinforced concrete column and a foundation, a steel structural connection piece with good ductility and hexagonal high-strength bolts are included. The steel structural connection piece is a hoop-shaped component which is manufactured by a steel mold, and vertical reinforcing ribs are weldedto the outer portion of the steel structural connection piece. The steel structural connection piece wraps a concrete block to form a square steel pipe concrete structure, holes corresponding to the positions of longitudinal ribs are formed in an upper end plate and a lower end plate of the square steel pipe concrete structure, and energy-consumable rubber threaded pipes are screwed into the holes; the tail ends of a column longitudinal rib and a column longitudinal rib in the foundation are subjected to tapping treatment, and are screwed into internal thread steel pipes and internal thread steel pipes with end plates arranged at the tail ends; and the three main components are connected through hexagonal screw rods. The joint connection mode is simple and convenient, dismounting is easy,industrialized production of the components can be achieved, the ductility and the energy consumption ability of the structure can be improved, the anti-shear ability of columns can be improved effectively as well, and the anti-seismic bearing ability of the columns is improved accordingly. The joint connection mode has the good disaster resistant ability, and the ideas of environmental protection, duration and sustainable development are reflected as well.

The invention discloses a transformer temperature controller with external heating elements, which comprises a sensing guide tube (1) and a copper body (2) connected with the sensing guide tube (1), wherein, the other end of the copper body (2) is provided with a push rod (3); heating tubes (4) are connected on the sensing guide tube (1) in series; and electric heating elements (5) are arranged on the heating tubes (4). In the invention, a temperature-sensing medium is heated outside the copper body to avoid a local overheating atmosphere of the copper body and maintain consistent rigidity and hardness of the push rod under different load conditions, and displacement of the push rod is only related to swelling capacity of the temperature-sensing medium, thus guaranteeing high precision ofthe temperature controller. The transformer temperature controller has simple structure but solves the technical problem which is always expected to be solved but is not successful.

The invention relates to a deep well outburst simulation experiment method and a rigidity regulation and control device and belongs to the technical field of coal and gas outburst simulation experiments. The method comprises steps of determining rigidity of a theoretical loading system of an outburst simulation experiment and designing a rigidity regulation and control device according to rigidityof the theoretical loading system and rigidity of an actual loading system; rigidity of the actual loading system is regulated and controlled through the rigidity regulation and control device to beconsistent with rigidity of the theoretical loading system, and distribution of the force loaded on a coal body by the actual loading system is regulated and controlled to be consistent with mining-induced stress distribution of a deep well coal seam roof through the rigidity regulation and control device. The method is advantaged in that by arranging the rigidity regulation and control device, the simulation test loading boundary is consistent with the actual engineering boundary, and accuracy of the test result is improved.

The invention discloses an application method of single body entry type ceramic wood. During ceramic wood preparing, sodium phenylacetate and chloropropene prepared through the reaction of phenylacetic acid and sodium hydroxide enters wood, allyl phenylacetate is generated, then, a high-molecular polymer is generated, and a net-shaped structure is formed by the high-molecular polymer and wood fiber. The interior-exterior structure, rigidity and strength of the ceramic wood can be consistent, and the interior and exterior waterproof performance, corrosion resisting performance, mothproof performance, anti-mold performance, safety performance and size stability of the ceramic wood are guaranteed, and therefore the ceramic wood can be directly used on the premise that coating of a coat is notconducted; and when the surface of the ceramic wood is old-fashioned, the performance of the ceramic wood is not influenced after grinding.

The invention provides a statical indetermination radar / antenna support dynamic leveling method which comprises the followings steps of a step S1 of setting a first gradienter and a second gradienter with indication directions which are mutually vertical on a rotary table; a step S2 of adjusting the indication directions of a radar / antenna on the rotary table to be horizontal; a step S3 of controlling the rotary table to rotate around an azimuth axis to enable the radar / antenna to direct to a plurality of positions, and respectively adjusting supporting legs on end portions of four horizontal landing legs to enable indication of the first gradienter to be horizontal when the radar / antenna directs to the plurality of positions; and a step S4 of continuously controlling the rotary table to rotate around the azimuth axis to enable the radar / antenna to direct to a plurality of positions, maintaining the indication of the first gradienter to be horizontal, and adjusting supporting legs on end portions of four horizontal landing legs to enable indication reading at each position of the second gradienter to be unanimous. The statical indetermination radar / antenna support dynamic leveling method enables the rotary table to be adjusted to be in a horizontal state under biggest gravitational torque, and then enables stiffness of each horizontal supporting leg to be adjusted to enable stress of each supporting leg to be unanimous.

The invention belongs to the field of aviation structure design, and particularly relates to a method for determining vertical rigidity of a large-opening structure of a rectangular fuselage cabin. The method comprises the steps of: setting a rigidity ratio of the rectangular fuselage with the large-opening structure to a rectangular fuselage without a large-opening structure, and setting the length, width and wall thickness of a rectangular section of the rectangular fuselage, wherein the two rectangular machine bodies are the same in structure except for the large opening structure; and taking the rigidity ratio and the length, width and height of the rectangular section as parameters, taking the minimum upper boundary beam area and the minimum lower boundary beam area as constraint conditions, and solving an expression of the upper boundary beam area and an expression of the lower boundary beam area.

The invention discloses an application method of single body entry type ceramic wood. During ceramic wood preparing, sodium phenylacetate and chloropropene prepared through the reaction of phenylacetic acid and sodium hydroxide enters wood, allyl phenylacetate is generated, then, a high-molecular polymer is generated, and a net-shaped structure is formed by the high-molecular polymer and wood fiber. The interior-exterior structure, rigidity and strength of the ceramic wood can be consistent, and the interior and exterior waterproof performance, corrosion resisting performance, mothproof performance, anti-mold performance, safety performance and size stability of the ceramic wood are guaranteed, and therefore the ceramic wood can be directly used on the premise that coating of a coat is notconducted; and when the surface of the ceramic wood is old-fashioned, the performance of the ceramic wood is not influenced after grinding.

The invention relates to a polyurethane foam sandwiched plastic steel composite cable duct. The polyurethane foam sandwiched plastic steel composite cable duct comprises an inner duct, wherein an external thread groove is continuously formed in the outer surface of the inner duct along the axial direction of the inner duct, a polyurethane foam layer is arranged in the external thread groove, and a thermo-setting glass steel tube is arranged on the outer surface of the polyurethane foam layer and the outer side of the inner duct. The structure design is reasonable, the external thread groove is filled and leveled up by the polyurethane foam layer to form a bumped three-dimensional stressed surface, then the glass steel tube is arranged on the outer side face of the polyurethane foam layer and the outer side face of the inner duct, and the polyurethane foam layer is light, so that the weight of the whole cable duct is reduced; as the polyurethane foam layer has strong bonding force when bonded with the glass steel, the glass steel tube and the inner duct can be closely combined into one body, the friction force between the inner duct and the glass steel tube is increased greatly, the inner duct and the outer duct can be prevented from slippage; and besides, the surface of the outer duct is in cylindrical smooth arrangement, and the outer duct has uniform thickness and consistent strength, so that the rigidity is enhanced greatly and the service life is prolonged.