1335 results about "Leaf spring" patented technology

The invention belongs to the technical field of plate spring performance analysis and evaluation, and discloses a high-strength two-stage gradual-change-stiffness plate spring performance analysis and evaluation system and method.The method comprises the steps that plate spring initial mechanical data collection and heterogeneous load response integrated processing are conducted on the basis of a multi-dimensional vehicle-mounted test experiment, and plate spring integrated mechanical response data are generated; performing double-rigidity gradient recognition analysis to generate rigidity transformation critical data; performing critical region stress field deconstruction analysis to generate stress field distribution characteristic data; carrying out local microstructure change characterization to generate structural deformation data; constructing a multi-scale stress transfer link, and generating critical region stress transfer path data; performing fatigue damage accumulative mapping to generate accumulative feature data; constructing a fatigue life prediction model, and generating life prediction data; carrying out comprehensive performance index quantitative evaluation to generate a performance evaluation result; executing plate spring optimization improvement scheme generation and verification; and a scientific basis is provided for performance optimization of the two-stage gradual-change-rigidity plate spring.

The invention relates to the technical field of part detection, and discloses a rapid detection device for automobile parts, which comprises a supporting table assembly, a rotating disc is rotatably connected in the supporting table assembly, and arc-shaped grooves I are formed in the edge of the rotating disc in an array manner and are used for accommodating a steel plate spring to be detected; a feeding assembly is arranged on the front side of the supporting table assembly, pushing assemblies are arranged in the rotating disc in an array mode, a driving assembly is arranged above the pushing assemblies, a detection assembly is arranged on the right side of the supporting table assembly, and a discharging assembly is arranged on the left side of the driving assembly. The steel plate spring is pushed into the detection hopper through the arc-shaped push plate so that the steel plate spring can be attached to the surface of the measuring cloth belt, the first camera shoots the scale, located on the measuring cloth belt, of the end of the steel plate spring so that the length of the steel plate spring can be detected, and meanwhile the second camera shoots from the upper portion so that the arc height of the steel plate spring can be measured. Therefore, the purpose of high steel plate spring detection efficiency is achieved.

The invention relates to the technical field of intelligent unmanned ships, in particular to a wave self-adaptive unmanned ship, a self-adaptive control system and a control method.The wave self-adaptive unmanned ship comprises a main ship body, a front arch, a rear arch, a suspension system, a propelling nacelle, a rigid sliding plate and a buoy, the main ship body is connected with the rear arch and the front arch, and the rigid sliding plate is fixed to the buoy; the propulsion nacelle is installed at the tail of the rigid sliding plate, the rear arch and the rigid sliding plate are installed through two bearings perpendicular to each other, the suspension system comprises a rocker arm, a plate spring and a TPMLM actuator, the rocker arm is connected to the rigid sliding plate, the plate spring and the TPMLM actuator are connected between the rocker arm and the rigid sliding plate and support the rocker arm to be in an upward inclined posture, and the rear arch is connected to the rigid sliding plate. The front arch is connected with the rocker arm, the plate spring and the TPMLM actuator are installed in parallel in the vertical direction, the TPMLM actuator is used for outputting active control force for restraining movement of the ship body, and the unmanned ship, the self-adaptive control system and the self-adaptive control method have the advantages that wave loads can be actively counteracted, and therefore movement restraining is achieved.

The invention discloses an active lubrication brake cylinder for a railway wagon and the railway wagon, and relates to the field of railway wagon control systems.The active lubrication brake cylinder comprises a fixed gear ring arranged at the bottom of a spinning cylinder body, and a piston is arranged in the spinning cylinder body; the matching gear ring and the fixed gear ring are arranged in parallel, and the side, facing the fixed gear ring, of the matching gear ring is a convex tooth surface; the projection of the S-shaped spiral elastic pieces in the axial direction of the piston is in a circular arc shape, one ends of the S-shaped spiral elastic pieces are connected with the side, away from the fixed gear ring, of the matched gear ring, the S-shaped spiral elastic pieces are symmetrically arranged in the circumferential direction of the matched gear ring, and the other ends of the S-shaped spiral elastic pieces are connected with a base of the piston; the brake cylinder structure meets the modification of the existing brake cylinder, is simple in structure and low in modification cost, and also has good manufacturability and maintainability.

The invention provides a loading safety monitoring method and system for a rear-loading vehicle and the vehicle. The method comprises the following steps that the arc height variable quantity of a plate spring of the vehicle in the current loading state is collected; based on the arc height variable quantity, a vehicle total weight estimated value is obtained through calculation; based on the axle load estimation values of the front axle and the rear axle and the axle distance of the vehicle, estimating the current gravity center height of the vehicle, and dynamically compensating the gravity center height according to the dynamic state parameters; and calculating a stability risk coefficient of the vehicle according to the total weight estimated value of the vehicle and the compensated gravity center height so as to carry out early warning. Displacement sensors are arranged on a front plate spring and a rear plate spring of a vehicle to collect arc height variation in real time, an axle load and a vehicle total weight estimated value are calculated based on a pre-calibrated plate spring rigidity coefficient, the gravity center height of the vehicle is estimated to evaluate the stability of the vehicle, and meanwhile the gravity center height is dynamically compensated based on dynamic parameters in the driving process. The evaluation precision under complex working conditions is improved, and the transportation safety is guaranteed.

The invention relates to suspended spindle body integrated automatic assembling equipment which comprises a main machine frame and a circulating conveying line, and each moving table of the circulating conveying line is fixedly connected with a positioning carrier. A supporting piece double-station feeding and assembling mechanism, a support overturning and feeding mechanism, a coaxial deviation rectifying mechanism, a first pin feeding and assembling machine, a first pin in-place installation detection mechanism, a rotor feeding and side inserting mechanism, a second pin feeding and assembling machine, a second pin in-place installation detection mechanism and a leaf spring feeding mechanism are sequentially arranged on the main machine frame around the circulating conveying line. The device comprises a leaf spring pressing mechanism, a leaf spring detection mechanism, a defective product unloading mechanism and a finished product unloading mechanism. The automatic assembling and detecting device has the beneficial effects that the automatic assembling, detecting and discharging device can adapt to automatic assembling, detecting and discharging treatment of supports, supporting pieces, pins, rotors and leaf springs, and the machining efficiency and the machining quality of suspended spindle bodies are improved.

The invention provides a modeling and KC analysis method for a double-front-axle balanced suspension. The modeling method comprises the steps that the structural form of the double-front-axle balanced suspension is determined; constructing a plate spring model of the double-front-axle balanced suspension; under the structural form, hard point coordinates in the double-front-axle balanced suspension are determined; and establishing the hard point coordinates in the plate spring model to obtain a corresponding balance connecting rod model, and assembling the balance connecting rod model to obtain an assembly body model of the double-front-axle balanced suspension. The KC analysis method comprises the following steps: newly adding a first-bridge and second-bridge reverse jumping working condition in a KC analysis project; and performing KC analysis on the assembly model of the double-front-axle balanced suspension on the basis of the first and second axle reverse jumping working condition to obtain a KC performance index of the assembly model under the first and second axle reverse jumping working condition. By means of the method and device, the defects existing in modeling and KC analysis modes of double-front-axle balanced suspensions and vehicle suspensions in the prior art are overcome.

The utility model discloses a gas inlet end plate structure of a fuel cell stack, belongs to the field of fuel cells, and solves the problem of non-uniform distribution of assembly force of the fuel cell stack in the prior art. According to the invention, the electric pile is located between the air inlet end plate and the tail end plate, and the two ends of the electric pile are in tight pressing contact with the air inlet end plate and the tail end plate respectively; a plate spring combined part is arranged between the tail end plate and the end part of the electric pile; the part, facing the electric pile, of the plate spring combined part is a plane part, and the part, facing the tail end plate, of the plate spring combined part is an elastic part; the plane part of the plate spring combined part is attached to the end part of the galvanic pile, and the elastic part of the plate spring combined part is arc-shaped and is in tight pressing contact with the surface, facing the galvanic pile, of the tail end plate. According to the air inlet end plate structure of the fuel cell stack, the distribution uniformity of stack assembling force is effectively improved, and the mass power density and the stack consistency of the fuel cell stack are improved.

The invention discloses a solid rocket engine in-situ heat preservation ignition test run frame which comprises a fixing base, a movable fixing plate, a supporting assembly, a force bearing pier, a first force transmission piece, a second force transmission piece, a force measuring piece, a heat preservation bottom plate and a heat preservation cover. A solid rocket engine to be tested is movably arranged on the movable fixing plate through the two supporting assemblies, and the movable fixing plate is connected to the fixing base through the multiple plate springs. The heat preservation bottom plate is arranged on the lower side of the movable fixing plate, the heat preservation cover is buckled on the heat preservation bottom plate, cold air is conveyed into the heat preservation cover through the cold air connector, the solid rocket engine to be tested can be cooled, and when the temperature of the solid rocket engine to be tested reaches the temperature required by testing conditions, the movable door is opened, and the solid rocket engine to be tested is ignited. And the force measuring piece can obtain thrust data of the solid rocket engine. The solid rocket engine in-situ heat preservation ignition test run rack can accurately simulate the thrust test of the solid rocket engine in an ultralow-temperature working environment.

The invention belongs to the technical field of elastic element manufacturing, and relates to a special-shaped plate spring and a manufacturing process thereof, in particular to a manufacturing process of a spring used in an ultrahigh vacuum environment. The process comprises the following steps: selecting a 07Cr17Ni7Al plate as a raw material; performing laser melting cutting blanking according to the shape and the size of the special-shaped plate spring plate blank; carrying out solution treatment on the blanked plate blank; carrying out punch forming and bending forming; the formed semi-finished product is subjected to aging treatment; and cleaning the surface after polishing. The manufactured special-shaped plate spring is reliable in work, good in temperature resistance, long in service life and capable of being used in an ultrahigh vacuum environment, the temperature resistance of the special-shaped plate spring can reach 250 DEG C, and the service life of the special-shaped plate spring is 600000 times or above.

The invention discloses a relay, which comprises a push rod assembly, a movable contact assembly and an elastic assembly, and is characterized in that the movable contact assembly comprises a movable contact piece; the elastic assembly is connected to the push rod assembly and the movable contact assembly and is used for providing contact pressure for the movable contact piece; the elastic assembly is provided with a first fulcrum and comprises a first leaf spring and a second leaf spring. In the over-travel process, the push rod assembly extrudes the elastic assembly, and the push rod assembly has an over-travel initial position and a first transition position in sequence relative to the position of the movable contact. Before the push rod assembly moves from the over-travel initial position to the first transition position, the first leaf spring deforms with the first fulcrum as the rotating point and is provided with a first force arm. And at the first transition position, the first leaf spring is in contact with the second leaf spring.

The invention relates to the technical field of precise positioning control, in particular to a two-degree-of-freedom large-stroke motion platform applied to wafer detection, which comprises a base platform and a load platform surface, the top surface of the base platform is provided with a linear motion platform and a rotary motion platform which are coaxially arranged, the linear motion platform is used for driving the load platform surface to do lifting motion, and the rotary motion platform is used for driving the load platform surface to do rotating motion. The rotary motion table is used for driving the linear motion table and the load table top to do circular motion, and the linear motion table comprises a linear actuator, an air floatation guide assembly, a first feedback device and a plate spring. The integrated design is adopted, the Z shaft and the Rz shaft are coaxially arranged and share the same air floatation guide assembly, the number of parts is effectively reduced, the axial space is compressed, the structure is more compact, the size of equipment is reduced, the self weight and the assembly difficulty are reduced, non-mechanical-friction guide is achieved, and the influence of friction on precision is avoided; besides, the plate springs distributed in a single layer achieve flexible decoupling through the axial and radial rigidity difference of the plate springs, motion crosstalk is restrained, and the dynamic response speed can be increased without a complex algorithm.

A vibration motor, including a housing with a receiving space, a stator assembly fixed in the housing, a vibrator assembly received in the housing and driven by the stator assembly to vibrate, and a leaf spring connecting the housing and the vibrator assembly. The leaf spring includes an outer fixed portion fixed to the housing, an inner fixed portion fixed to the vibrator assembly, and an elastic arm connecting the outer fixed portion and the inner fixed portion. The elastic arm extends from the inner fixed portion to the outer fixed portion in a manner of rotating around the inner fixed portion. The vibration motor further includes damping glue arranged between two adjacent elastic arms for adjusting vibration damping of the vibrator assembly. The vibration motor of the present disclosure reduces material costs and improves reliability and consistency of a product.

The utility model relates to the technical field of goods lift falling prevention, and discloses a high-strength anti-falling safety device suitable for goods lifts.The high-strength anti-falling safety device suitable for goods lifts.The high-strength anti-falling safety device comprises an elevator shaft, a transverse plate is fixedly connected to the top of the elevator shaft, a traction assembly is arranged on the upper portion of the transverse plate, a lift car is arranged in the middle of the elevator shaft, and an anti-falling assembly is arranged at the top in the lift car; protection assemblies are arranged on the two sides of the interior of the lift car, and an elevator door is installed outside the lift car. The anti-falling assembly comprises a plate spring, the plate spring is fixedly connected to the inner top of the lift car, a U-shaped ring is fixedly connected to the middle of the plate spring, and fixing frames are fixedly connected to the two sides of the inner top of the lift car. According to the elevator traction assembly, when the steel rope of the elevator traction assembly is broken, the bottoms of the two rotating blocks are clamped in the sawtooth grooves formed in the exteriors of the two limiting blocks through the cooperation of the plate springs and the rotating blocks, the steel rope is prevented from falling rapidly, and safety is guaranteed.

A roller spring member for an overrunning clutch is provided. A first bridge connecting portion couples a bridge to a first spring central location of a first leaf spring. A second bridge connecting portion couples the bridge to a second spring central location of a second leaf. The roller spring member further includes at least one of, each of the first bridge connecting portion and the second bridge connecting portion including an undercut radius section, each of the first leaf spring and the second leaf spring being tapering from an associated one of the first spring central location of the first leaf spring and the second leaf spring central location of the second leaf spring to a first end and a second end, and each of the first leaf spring and the second leaf spring including a straight portion proximate the central locations.

A bolt assembly for securing a passive door panel relative to an entryway frame. The bolt assembly has a base to be fixedly mounted relative to the passive door panel, a catch attached to the base with a leaf spring to deflect relative to the base, and a bolt which is able to translate relative to the base between a retracted position and an extended position for securing the passive door panel. The bolt is biased toward the extended position and selectively maintained in the retracted position by the catch.

The invention discloses plate spring machining lug rolling equipment which comprises a machining table, two limiting assemblies, a switching assembly, two lug folding assemblies, two lug rolling mechanisms and two pushing assemblies, and the two limiting assemblies are connected with the switching assembly; the lug folding assembly is arranged on the machining table, the lug winding mechanism comprises a driving assembly, a shaft sleeve, a supporting assembly, a locking sleeve and an abutting assembly, and the shaft sleeve and the locking sleeve are rotationally arranged above the supporting plate through a seat body; the driving component is connected with the shaft sleeve; the supporting assembly is connected with the shaft sleeve, and one end of the supporting assembly is matched with the locking sleeve. The abutting assembly is arranged on the inclined upper portion of the shaft sleeve and the locking sleeve through a connecting rod. The two pushing assemblies are arranged on the two sides of the linkage assembly in a sliding mode correspondingly and connected with the corresponding driving assemblies correspondingly. Therefore, the two carrying tables can be rapidly switched, the steel plates do not need to be frequently transferred, and the steel plate lug rolling efficiency is remarkably improved. And meanwhile, in the lug rolling process, limitation on the steel plate can be automatically relieved, and operation is easier, more convenient and faster.

The invention relates to the field of plate spring processing, in particular to bushing press-fitting equipment for plate spring processing, which comprises a mounting table, a placement seat arranged on the upper side of the left part of the mounting table, a fixed vertical plate arranged on the upper side of the left part of the mounting table, and a baffle plate arranged between the placement seat and the fixed vertical plate, a pressing mechanism is arranged on the upper side of the right portion of the mounting table, and a pressing mechanism is arranged on the upper side of the left portion of the mounting table. Through buffering of the first spring and self-adaptive centering design of the press-fitting column, initial impact is eliminated, coaxial force application is ensured, a mechanically-linked positioning mechanism forcibly positions the plate spring accurately, an anti-deviation mechanism is pressed into a flexible guide bush at the tail section to prevent inclination, the problems of displacement, deviation and damage are thoroughly solved through precise cooperation of multiple mechanisms, and the production efficiency is improved. And the press-fitting coaxiality and the qualified rate of finished products are obviously improved.

The present invention discloses an automatic leaf spring assembly device, comprising: a base positioning module, a leaf spring feeding module, a pre-alignment module, and a rotary shaft pushing module. The base positioning module is used to compress and secure the base, the leaf spring feeding module is used to compress and secure the leaf spring and feed the leaf spring into the base positioning module. The pre-alignment module includes a pre-alignment rod, a pre-alignment spring, a pre-alignment rod pushing mechanism, and a pre-alignment rod reset mechanism. The pre-alignment rod, under the action of the pre-alignment spring, can be partially inserted into the leaf spring and the base. The pre-alignment rod pushing mechanism is used to drive the pre-alignment rod to fully insert into the leaf spring and the base. The pre-alignment rod reset mechanism is used to drive the pre-alignment rod out of a first axial hole in the leaf spring and a second axial hole in the base, thereby compressing the pre-alignment spring. The rotary shaft pushing module is used to push the rotary shaft into the leaf spring and the base. The present invention can achieve automatic and precise assembly of leaf springs, improve production efficiency, and reduce labor costs.

The utility model belongs to the technical field of hoists, and particularly relates to a mine box type hoister which comprises the ground and a connecting frame arranged above the ground, a driving structure is arranged on the left side of the connecting frame, and an emergency stopping mechanism is arranged on the connecting frame. The emergency stopping mechanism comprises a clamping unit and a stopping unit; the braking unit comprises a chain, a guide rail, clamping teeth, a lift car, a connecting rod, a top plate, a connecting rope, a plate spring, a connecting block, a connecting strip and clamping strips, one end of the chain is fixedly connected to the connecting rope, and the connecting rope downwards extends to the bottom of the plate spring through a through hole in the middle of the top plate and is connected with one ends of the two clamping strips; the connecting rods are fixedly connected to the periphery of the lower surface of the top plate. According to the box type elevator for the mine, when the chain is broken and the car falls, the connecting rope falls downwards under the action of gravity, the pressure of the plate spring disappears, and the clamping strips can be rapidly clamped into the clamping teeth on the inner sides of the guide rails, so that the car is effectively prevented from further falling.

The utility model discloses a chassis and a vehicle. The chassis comprises a longitudinal beam; a battery assembly; and the rear axle assembly comprises a rear axle piece, a transmission shaft piece and plate spring pieces, the rear axle piece extends in the left-right direction and is arranged on the front side of the battery assembly at intervals, and the left end and the right end of the rear axle piece are connected with the two plate spring pieces correspondingly. Therefore, on the premise that the suspension spring of the vehicle uses the plate spring piece, the rear axle piece is arranged on the front side of the battery assembly at intervals and connected with the plate spring piece, on the premise that the vibration reduction performance of the vehicle is improved, the situation that the rear axle piece is influenced by arrangement interference of the battery assembly can be prevented, and the rear axle piece does not occupy the installation space of the battery assembly; therefore, the size of the battery assembly can be increased, the battery assembly can be conveniently installed and arranged, the structural layout of the chassis can be optimized, and the overall structure of the chassis is more compact. In addition, the rear axle piece can provide certain protection for the battery assembly, and can buffer and absorb external force borne by the chassis from front to back.

The utility model provides a wheel-side electric drive axle which comprises an axle body and a motor reducer integrated structure, and the axle body is sequentially provided with a plate spring mounting seat and a reduction gearbox connecting seat from the middle to the two sides; the motor and speed reducer integrated structure comprises a shared shell, a motor cavity is formed in one side of the shared shell, a speed reducer cavity is formed in the other side of the shared shell, a speed reducer assembly is arranged in the speed reducer cavity, a motor assembly is arranged in the motor cavity, and a motor shaft of the motor assembly is coaxially connected with an input shaft of the speed reducer assembly; the axle body is connected with the shared shell through the reduction gearbox connecting base, and the plate spring mounting base is located between the two motor reducer integrated structures. The wheels are independently driven through the motor reducer integrated structures at the two ends of the axle body, a transmission half shaft of the axle body is omitted, a transmission chain is shortened, the mechanical transmission structure is greatly simplified, the weight is reduced, the efficiency loss of a mechanical differential mechanism is reduced, and meanwhile the dynamic response to wheel control is improved.

The utility model discloses a vehicle plate spring fatigue testing device, which comprises a bottom plate, two groups of sliding chutes are arranged at the upper end of the bottom plate, sliding seats are connected in the two groups of sliding chutes in a sliding manner, fixed plates are fixedly connected at the upper ends of the sliding seats, a plurality of groups of fixed shafts are fixedly connected on the outer wall of a rotating plate, sliding blocks are connected in the plurality of groups of fixed shafts in a sliding manner, and the sliding blocks are fixed on the rotating plate. An adjusting groove is formed in the upper end face of the sliding block, a clamping block is slidably connected into the adjusting groove, an elastic mechanism enabling the clamping block to reset is installed in the adjusting groove, and the upper end face of the clamping block is obliquely arranged. According to the utility model, through the arrangement of the clamping block and the spring, when the leaf spring eye slides to the fixed shaft, the clamping block can be pushed upwards by using the reset force of the spring to firmly lock the leaf spring eye and prevent the leaf spring eye from displacing or inclining in the test process, so that the problem that the leaf spring cannot be limited in the test in the background technology is effectively solved; and the test stability and accuracy are improved.

A vehicle chassis with a first frame rail and a second frame rail. There is rear suspension with a first leaf spring and a second leaf spring each pivotally connected to the first and second frame rails, respectively. In some embodiments, the rear suspension includes a first shackle assembly connecting the first leaf spring with the first frame rail such that the first shackle straddles the first leaf spring, and a second shackle assembly similarly straddling the second leaf spring.

The invention discloses a waterproof crawling robot. The robot comprises a driving mechanism, a supporting and adjusting mechanism, a camera shooting detection assembly, a slapping communication mechanism, a coupling unit and a control unit. The driving mechanism adopts four-wheel independent driving and differential steering; the supporting adjusting mechanism is of a crossed supporting rod structure. The slapping communication mechanism is composed of an eccentric cam and a firing pin or an electromagnetic releaser and a leaf spring firing pin, and mechanical pulses are transmitted to the pipe wall through an elastic cushion or a thin film resonant cavity of the coupling unit. The control unit carries out coordinated proceeding, detection and communication, a mute time slot is formed before and after slapping, acoustic signals are collected, and communication and echo ranging are achieved. According to the scheme, the strong rhythm pulse is used as a synchronous reference of communication and positioning, self-noise interference is effectively suppressed, stable communication and centimeter-level positioning are achieved in metal, full water and complex pipe networks, and the task completion rate is remarkably increased.

A device 100 for pivotally holding and locking an aggregate of an aerial vehicle (AV) includes a housing 102 fixed to the body of the AV; a cam structure 104 pivotally coupled to the housing 102 for pivotal movement about a pivot axis between a deployed position, in which the aggregate fixed to the cam structure 104 is functional, and a folded position, in which the aggregate is not functional; and a plate spring 106 configured in the housing 102. Cam structure 104 is configured relative to the plate spring 106 such that, when the cam structure 104 is moved between the deployed position and the folded position, the cam structure 104 deflects the plate spring 106 to cause toggling of the aggregate between the deployed position and the folded position. The aggregate can be any of a rotor arm assembly, a landing gear 108, and a sensor.

The invention relates to the technical field of automobile structures, in particular to a main and auxiliary plate spring suspension system, an anti-roll optimization design method thereof and a mobile carrier, and the method comprises the following steps: establishing a simulation model of a whole vehicle and the main and auxiliary plate spring suspension system, carrying out kinematics and dynamics analysis by using simulation software, calculating roll gradient indexes under different working conditions, and calculating the anti-roll optimization design of the main and auxiliary plate spring suspension system. Optimizing the structural parameters and the performance parameters and optimizing the parameters; and performing simulation model comparison test on the optimized whole vehicle and the main and auxiliary leaf spring suspension system and the whole vehicle and the main and auxiliary leaf spring suspension system before optimization, and determining the anti-roll reliability of the optimized whole vehicle and the main and auxiliary leaf spring suspension system. According to the optimization design method, an accurate simulation model is established, simulation software is utilized for analysis, the optimization direction is determined, parameters are optimized, and finally the optimization effect is verified through a comparison test, so that the problems existing in a traditional design method can be effectively solved, and the operation stability and safety of the vehicle can be remarkably improved.

A retrofit kit for replacing an existing leaf spring suspension system, methods of replacing the existing leaf spring suspension systems, and suspension systems may include an upper load beam having a proximal end and a distal end, the distal end being configured to pivotally mount to a vehicle. A lower control arm includes a proximal end, a distal end, and a mounting location positioned between the proximal end distal ends. The distal end of the lower control arm is configured to pivotally engage a leaf spring mounting eye provided on the vehicle. The mounting location on the lower control arm is configured to pivotally receive the proximal end of the upper load beam.

A kind of quasi-zero stiffness vibration isolation device based on negative stiffness generated by rotatable leaf spring, quasi-zero stiffness vibration isolation device includes positive stiffness component, negative stiffness component and height adjustment pad;Positive stiffness component, negative stiffness component and height adjustment pad are all installed in outer sleeve, and the bottom surface of positive stiffness component extends from the bottom of outer sleeve, beyond the bottom surface of outer sleeve, forms height difference on level;Negative stiffness component is located above positive stiffness component, and upper end surface extends the upper end surface of outer sleeve, outer sleeve is installed in floating plate, and moves up and down with floating plate together;The negative stiffness component is the negative stiffness component formed by rotatable leaf spring combination, and negative stiffness is generated by the change of rotatable leaf spring.The rotation or movement of rotatable leaf spring negative stiffness component in the process of vibration isolation forms matching negative stiffness, so that good quasi-zero stiffness low-frequency vibration isolation performance is obtained, and the vibration isolation efficiency of floating bed system is improved;It has the characteristics of simple structure, high reliability and long service life.

The invention provides an ultra-deep well large annulus flexible righting transverse vibration reduction method, which belongs to the technical field of well drilling and drilling, and comprises the following steps of: inputting pre-drilling well drilling engineering information, and calculating a whole well section drill string vibration distribution form based on an established drill string finite element dynamic model; the tripping-in positions and the number of the flexible stabilizers and the layer number and the compression space of plate springs in the flexible stabilizers are designed, and an initial vibration reduction scheme is generated; comparing the real-time vibration data with the predicted vibration distribution pattern, carrying out real-time risk assessment, carrying out dynamic optimization on the initial vibration reduction scheme according to the real-time risk assessment, adjusting the tripping-in position and number of flexible stabilizers, the number of plate spring layers and the compression space, and generating an optimized real-time vibration reduction scheme; a flexible stabilizer is put in the designated position of the drill column; when the drill column transversely vibrates and collides with the well wall, the buffer block of the flexible stabilizer is pressed, the plate spring is driven to generate radial elastic deformation, part of radial impact kinetic energy is converted into elastic potential energy of the plate spring to be stored, and radial vibration reduction is achieved.