13329results about "Vibration suppression adjustments" patented technology

The invention relates to the technical field of maritime work cranes and discloses an anti-rolling and anti-seismic maritime work crane which is characterized in that a rack swing wall is arranged at the upper end of a rack column, a winch is arranged on the end side of the rack swing wall, and a main traction rope is arranged in the winch; the lower end of the main traction rope is fixedly connected with a top plate, and the lower side of the edge end of the top plate is fixedly connected with a fixing plate. According to the anti-shaking and anti-seismic maritime work crane, when the device drives a heavy object to move upwards and the heavy object shakes and deviates, an extrusion plate on the side can be extruded, at the moment, the distance between the extrusion plate and a side plate is changed, the moving distance of the heavy object can be judged through a distance sensor, and when the moving distance of the heavy object is large, data can be transmitted to a controller; and therefore, a worker is reminded that the heavy object deviates, potential safety hazards exist, the traction and pulling state of the auxiliary traction rope on the fixing plate is stressed outwards, the shaking performance of the single main traction rope during hoisting operation of the heavy object is reduced, and the stabilization effect is good.

The present invention relates to a flywheel (1) for a drive train of a motor vehicle, comprising a main flywheel mass (4) forming an input side (2) which can be screwed to a crankshaft of an internal combustion engine through a plurality of screw holes (5) distributed in the circumferential direction (U) of the flywheel (1), a slip clutch (6) arranged downstream of the main flywheel mass (4) in a torque transmission path emanating from the input side (2), and a torsional vibration damper (7) arranged downstream of the slip clutch (6) in the torque transmission path and which has both an output flange (11) and a hub (8) forming an output side (3), which is connected in a rotationally fixed manner to the output flange (11), with through holes (10) distributed in the circumferential direction (U), wherein the torsional vibration damper (7) has a disassembly device (12) which can be removed by rotation and which is designedto remove the non-rotatable connection of the hub (8) to the output flange (11) so that the through holes (10) can be aligned with the screw holes (5).

The invention relates to the technical field of electric control cabinets, and discloses an electric control cabinet and a using method and application thereof in crane construction, the electric control cabinet comprises a shell assembly, the shell assembly comprises a cabinet body and a mounting assembly arranged in the cabinet body, one side of the mounting assembly is provided with a heat dissipation adjusting assembly, and the heat dissipation adjusting assembly is arranged on the other side of the cabinet body. The installation assembly comprises a fixing frame, the fixing frame is connected with the inner wall of the cabinet body, damping springs are arranged at the four corners of the surface of the fixing frame, and an installation frame is arranged at the end, away from the damping springs, of the fixing frame. Through cooperation of the mounting assembly and the heat dissipation adjusting assembly, the interval between every two adjacent heat dissipation fins is adjusted in real time according to different temperatures of different positions, the ventilation quantity between an adjusting plate and a ventilation groove is adjusted, and therefore rapid heat dissipation is achieved, the vibration amplitude of the mounting frame is reduced when external wind power is too large, and normal operation of electrical elements is ensured.

The invention relates to the technical field of automobile air suspensions, and discloses an air suspension system and a vehicle, and the air suspension system comprises a mechanical module and an electronic central control module. The mechanical module comprises a valve body, an air path, an air supply unit, a pressure sensor and a drying chamber assembly, the air supply unit is connected with the valve body through the air path, and the valve body is provided with various valves and is connected with the filtering chamber assembly. The electronic central control module comprises a central control upper cover, a central control base, a central control PCBA circuit board and a switching electromagnetic valve coil. An electromagnetic valve driving circuit on the circuit board is used for controlling opening and closing of an electromagnetic valve. Air compressed and filtered by the air supply unit enters the valve body through the drying cavity assembly, and then the switching electromagnetic valve set is controlled by the electronic central control module to conduct air supply switching. The system is further provided with an inflation pump, an inflation motor, a plurality of sets of switching electromagnetic valves and an air electromagnetic valve which are used for controlling air supply and air exhaust of different air paths. According to the system, efficient and safe operation of the air suspension is achieved through air path design and electronic control.

The utility model discloses an electrical circuit installation hanging bracket, and particularly relates to the technical field of electrical circuit installation, which comprises a bottom plate, when a wall surface connecting plate needs to be fixed on an uneven top end wall surface, the length of an outer column can be adjusted according to needs, so that the device can be connected with the wall surface more firmly, and the installation is more convenient. When the wall surface connecting plate needs to be fixed to the inclined top end wall surface, the fastening bolt can be loosened, then the wall surface connecting plate is rotated to be parallel to the top end wall surface, then the fastening bolt is tightened again, the spherical hinge is prevented from rotating, then the wall surface connecting plate is fixed, and the device can be connected with the wall surface more firmly; according to the utility model, the cable can be placed between the clamping ring I and the clamping ring II, the cable can be clamped and prevented from shaking, and the damping spring shock absorber I and the damping spring shock absorber II can reduce vibration, increase stability and protect the cable.

The invention discloses a three-degree-of-freedom parallel vibration isolation platform with a zero-stiffness characteristic. The three-degree-of-freedom parallel vibration isolation platform comprises a static platform, a movable platform and three PRRR branches, the PRRR branch comprises a supporting frame, a sliding frame, a first connecting rod and a second connecting rod, the lower end of the supporting frame is fixed to the static platform through a base, the base is provided with a vertical spring, the upper end of the supporting frame is sleeved with the sliding frame, the sliding frame is slidably connected with the supporting frame, and the lower end and the upper end of the vertical spring are fixed to the base and the sliding frame respectively; the carriage, the first connecting rod, the second connecting rod and the static platform form a first revolute pair, a second revolute pair and a third revolute pair which are parallel to one another; a horizontal spring is arranged in the sliding frame, one end of the horizontal spring is in sliding connection with the supporting frame through a sliding block, and the other end of the horizontal spring is fixed to the sliding frame. The three-degree-of-freedom vibration isolation mechanism has the flexible motion characteristic, meets the space three-degree-of-freedom vibration isolation requirement, and can achieve the zero-rigidity characteristic in the X direction, the Y direction and the Z direction.

The invention discloses a chemical heat exchanger with energy-saving improved structural design, which comprises a heat exchange tank body, a connecting disc is fixedly mounted at the end part of the heat exchange tank body, a tank cover is arranged on one side, far away from the heat exchange tank body, of the connecting disc, and a processing assembly is arranged on the inner side of the tank cover. When the heat exchanger is used, dirt generated by liquid can adhere to the interior of the heat exchange tank body and needs to be cleaned, at the moment, a waterproof motor is started, a rotating rod fixedly installed at the output end of the waterproof motor starts to rotate, and a limiting ring fixedly installed at the end of the rotating rod drives a reciprocating lead screw to rotate along with the reciprocating lead screw; the rotating reciprocating lead screw drives the sleeve plate arranged on the outer wall of the reciprocating lead screw in a sleeving mode to move in a reciprocating mode, the sleeve plate drives the scraping ring to slide on the outer wall of the heat exchange pipe through the extrusion rod, and due to the fact that the scraping ring is attached to the outer wall of the heat exchange pipe to slide, dirt attached to the outer wall of the heat exchange pipe can be cleaned.

The utility model relates to the technical field of rail travelling cranes, and discloses travelling crane rail cleaning equipment which comprises a rail body and a support arranged on a travelling crane, a scraper bucket used for cleaning the rail body is arranged on the support, the scraper bucket is in contact with the rail body, and the travelling crane rail cleaning equipment further comprises a shell arranged on the scraper bucket and used for cleaning the rail body. A mounting area is arranged on the surface of one side close to the track body; the rack is arranged in the mounting area on the shell; the rotary driving assemblies are arranged on the rack, and the two rotary driving assemblies are arranged side by side; the vibrating mechanism is arranged on the rack and connected with the rotation driving assembly; and the driving assembly is arranged in the mounting area on the shell and is connected with the rotation driving assembly. According to the travelling crane rail cleaning equipment, the cleaning efficiency and quality are improved, the abrasion and energy consumption of the equipment are reduced, and a powerful guarantee is provided for safe and efficient running of travelling cranes.

The invention discloses a port wheel type electro-hydraulic material grabbing machine with a self-adaptive clamp, and relates to the technical field of material grabbing machines, the port wheel type electro-hydraulic material grabbing machine comprises a frame, an anti-toppling unit, a cleaning unit and a buffer unit, and the frame is used for installing and fixing the anti-toppling unit, the cleaning unit and the buffer unit; the anti-toppling unit is used for preventing the grabbing machine from toppling and shifting when the grabbing machine works to grab heavy objects, the cleaning unit is used for self-cleaning of a clamp, the buffering unit is used for preventing the clamp from damaging the objects due to too large impact force when the clamp clamps the objects, and when the frame runs to a port to work, in the heavy object clamping process, the buffering unit is used for buffering the impact force. The anti-toppling unit avoids the phenomenon that the grabbing machine deviates and topples over due to the fact that objects are too heavy, the clamp is cleaned through the self-cleaning unit during underwater sludge treatment, the situation that sludge is accumulated on the clamp after long-term work is avoided, the clamping size is reduced, and the working efficiency is affected is avoided. And meanwhile, in the material taking process, damage to the objects caused by too large clamping force of the clamp is avoided through the buffer unit.

The invention provides a steel box girder hoisting device for building construction, and relates to the technical field of building construction, slings are arranged at the tail parts of a main hook and an auxiliary hook, and during hoisting, under the action of the gravity of a hoisted steel box girder, the slings move from the tail parts of the main hook and the auxiliary hook to the middle parts to drive the auxiliary hook to rotate relative to the main hook; the middle part of the auxiliary hook is gradually close to the middle part of the main hook, namely the auxiliary hook is gradually changed from a state of being separated from the main hook to a state of being combined with the main hook. The auxiliary hook is limited by the damping mechanism in the rotating process, the speed of the lifting appliance moving from the tails of the main hook and the auxiliary hook to the middle is reduced, and the damping effect is achieved, that is, the damping mechanism absorbs impact stress generated between the auxiliary hook and the lifting appliance when the lifting appliance is subjected to instantaneous impact force at the moment of lifting load; and when the lifting appliance moves from the tail parts of the main hook and the auxiliary hook to the middle part, the auxiliary hook provides lateral support and limit for the lifting appliance, so that the unstable shaking of the lifting appliance is reduced, and the influence on the lifting stability and the construction safety of the steel box girder is reduced.

The utility model relates to the technical field of vibration damping devices, in particular to a wind driven generator tower tuning inerter vibration damping device which comprises a sliding support, the sliding support is mounted on a rest platform, and a mass block is slidably arranged on the sliding support in the horizontal direction; the counter-force frame assembly is fixedly connected to the rest platform, and an adjustable spring assembly and a liquid inerter damper assembly are connected between the counter-force frame assembly and the mass block; wherein the adjustable spring assembly and the liquid inerter damper assembly can rotate in the horizontal direction relative to the mass block and the reaction frame assembly, the adjustable spring assembly is used for buffering movement of the mass block in the horizontal direction, and the liquid inerter damper assembly is used for absorbing vibration of the mass block. According to the device, the damping effect of the device is improved through the amplification effect of inertial damping, the damping device can achieve balance of strong vibration energy with the small mass size, all the components of the device are supported to be disassembled and assembled, and installation and transportation are convenient.

The invention relates to the technical field of fixing devices, and discloses a solar photovoltaic power generation panel fixing device which comprises a T-shaped frame, a rotating shaft is rotatably connected to the inner wall of the T-shaped frame, a supporting table is fixedly connected to the rear portion of the T-shaped frame, a motor is fixedly connected to the top of the supporting table, and a belt pulley set is fixedly connected to the output end of the motor. The photovoltaic panel can change according to the movement position of the sun, so that the photovoltaic panel can receive the highest sunlight intensity all the time, the sunlight conversion efficiency of the photovoltaic panel can be maximized, meanwhile, installation of the photovoltaic panel can be rapidly completed, the installation time of workers can be saved, and the installation efficiency of the workers is improved. The photovoltaic panel installation device can be installed on a roof quickly, can be installed according to photovoltaic panels of different sizes, avoids the problem that the photovoltaic panels are not matched during installation, and can improve the installation diversity of the photovoltaic panels.

The invention relates to the technical field of stackers, in particular to a rigid anti-swing device of a stacker for an automatic stereoscopic warehouse, which comprises the stacker, a first-stage moving platform and a second-stage moving platform arranged on one side of the stacker, an objective table arranged above the second-stage moving platform, a scissor-fork type connecting rod mechanism, a buffer mechanism and a protection mechanism, the scissors fork type connecting rod mechanism is connected between the first-stage moving platform and the second-stage moving platform of the stacking machine. The shear fork type connecting rod mechanism is additionally arranged between the first-stage moving platform and the second-stage moving platform, the relative motion between the two platforms is forced to be single and determined linear motion, the connecting rigidity in the transverse direction and the vertical direction is greatly enhanced, and therefore basic shaking caused by sudden acceleration change and structural elastic deformation is restrained.

The utility model relates to a flexible photovoltaic support with a vibration reducing function, which comprises end part stand columns and a middle stand column, the middle stand column is arranged between the end part stand columns, the top of each end part stand column is fixedly connected with an installation cable, and two installation cables are arranged in pairs in parallel in a group. A triangular support is fixedly connected to the mounting cables arranged in pairs, a spring is fixedly connected to the bottom of the triangular support, a limiting piece used for limiting straightening of the spring is installed on the spring, a balancing weight is fixedly connected to the bottom of the spring through a first steel wire rope, and a ground pile is fixedly connected to the bottom of the balancing weight through a second steel wire rope. Various guarantees are provided, the vibration amplitude of the flexible photovoltaic support is effectively reduced, the structural safety is improved, meanwhile, the vibration reduction assembly can be effectively protected, and structural failure is avoided.

The invention relates to the technical field of ship cranes, in particular to a ship crane hoisting assembly which comprises a ship crane, a sling connecting and fixing assembly is arranged below the ship crane, a hoisting frame assembly is arranged below the sling connecting and fixing assembly, and an object fixing frame is arranged below the hoisting frame assembly. The container lifting device has the beneficial effects that the lifting frame assembly is designed to be matched with the gravity center adjusting assembly and the auxiliary buffer frame assembly, and the first position sensor and the second position sensor are carried on the two sides of the object fixing frame, so that when a container is initially lifted, the gravity center adjusting assembly and the auxiliary buffer frame assembly are matched, and the gravity center adjusting assembly and the auxiliary buffer frame assembly are matched; whether the gravity center of the container deviates excessively or not is fed back, the independent sling winding roller set I and the sling winding roller set II are used for controlling the connecting sling to achieve winding or loosening of the winding roller adjusting sliding rail in the displacement process, the gravity center of the container is adjusted in the direction opposite to the deviation direction, and the stability of the container in the lifting process is guaranteed.

The invention relates to the technical field of smashing devices, in particular to a smashing device for a graphite lithium battery negative electrode material, which comprises a shell, the interior of the shell is divided into a smashing cavity and a storage cavity, and a storage part with a hollow structure is arranged in the storage cavity; the crushing and conveying mechanism is used for conveying external graphite particles to the crushing cavity and carrying out coarse crushing on the graphite particles in the conveying process; the crushing mechanism is used for crushing the graphite particles; the driving mechanism is used for transmitting power to the crushing mechanism, and meanwhile, the air and the graphite particles in the crushing cavity are conveyed into the storage part in the power transmitting process; and the screening plate is installed in the storage part, an outlet is formed in the storage part, and the storage part communicates with the crushing cavity through a circulating pipe. Graphite particles are conveyed into the crushing cavity through the crushing and conveying mechanism, then the driving mechanism is used for driving the crushing mechanism to crush the graphite particles, and finally the graphite particles are screened through the screening plate, so that the crushing efficiency of the graphite particles and the uniformity of the crushing granularity are improved.

The three-degree-of-freedom parallel vibration isolation platform with the quasi-zero stiffness characteristic comprises a static platform, a movable platform and a plurality of sets of branch chains, and each branch chain comprises a supporting column, a vertical spring, an L-shaped supporting frame, an upper connecting rod, a lower connecting rod and a horizontal spring; the lower end of the supporting column is fixed to the static platform, and the upper end of the supporting column is connected with the lower end of the vertical spring through a first adjusting mechanism. The upper end of the vertical spring is fixed below the movable platform; the lower end of the L-shaped supporting frame is fixed to the static platform, the horizontal spring is installed on the L-shaped supporting frame through the spring seat, and the spring seat, the lower connecting rod, the upper connecting rod and the movable platform form a first rotating pair, a second rotating pair and a third rotating pair which are parallel to one another. The three-degree-of-freedom vibration isolator has the flexible motion characteristic, the space three-translation-degree-of-freedom vibration isolation requirement is met, and by adjusting the pre-compression amount of the springs, the approximate zero-rigidity characteristic can be achieved in the X direction and the Y direction, and the zero-rigidity characteristic can be achieved in the Z direction.

The invention provides an electric wheelchair damping suspension control method and device, and relates to the technical field of electric wheelchair control, and the technical scheme is characterized in that road surface information collected based on electric wheelchair front wheel mechanical response is obtained, and the road condition about to be encountered by rear wheels is predicted based on the road surface information and the distance between the front wheels and the rear wheels of an electric wheelchair; according to the predicted road condition, the optimal position of a movable heavy object below a seat of the electric wheelchair and the optimal parameters of a rear wheel damper are calculated and controlled, adjustment of the movable heavy object is used for optimizing distribution of the gravity center of the wheelchair, and adjustment of the rear wheel damper is completed before rear wheels make contact with the uneven road surface; the posture of the wheelchair and the comfort degree of a user are monitored in real time, and the position of the movable heavy object and parameters of a rear wheel damper are dynamically adjusted according to the monitoring result. The electric wheelchair damping suspension control method and device have the advantage that the comfort and stability of the electric wheelchair when the electric wheelchair runs on an uneven road surface are improved.

Provided is an intelligent control-based dosing and stirring device for sediment pollution control, including a support underframe, a support frame, a chemical cartridge, and a stirring assembly which works through intelligent control. A support ring positioned in a middle position is fixed into the support underframe by multiple support rods, and an anti-shaking mechanism is arranged in the support ring, and mounted in the support ring by multiple shock-absorbing assemblies. The shock-absorbing assemblies are used for shock absorption, thus preventing the chemical cartridge from shaking. The anti-shaking mechanism includes a circular support block, and an annular groove is formed in the circular support block. The intelligent control-based dosing and stirring device for sediment pollution control relates to the technical field of dosing and stirring devices.

The invention discloses a valve detection device, and relates to the technical field of valve detection. Comprising a detection host, a pool, a base plate, an electric rotating rod and a detection assembly, an adjusting motor is used for driving a fly shaft protection end to rotate, then the fly shaft protection end is used for driving a valve shaft to rotate, the detection device can automatically adjust opening and closing of a valve plate according to different detection requirements, manual opening and closing are avoided, and the detection accuracy and efficiency are improved. The impact force generated when the valve shaft flies out is transmitted to the force unloading spring through the shaft flying prevention assembly, the force unloading spring converts the impact force by compressing the force unloading spring, the purpose of absorbing the impact force is achieved, and the situation that the valve shaft directly flies out, and consequently people are injured is prevented. When the force unloading plate slides to the position of the alarm, the alarm is triggered through the first contact block, the second piezoelectric ceramic in the alarm is pressed and generates an electric signal, and after the electric signal is transmitted to the control system, the control system gives an alarm to a worker, so that the purpose of preventing shaft flying is achieved.

The present disclosure relates to a torque limiter including a flywheel; a first axial bearing part; the second axial bearing part and the first axial bearing part are relatively fixed in the axial direction, and a certain distance is formed between the second axial bearing part and the first axial bearing part; the torque input disc is fixed relative to the flywheel in the radial direction and drives the flywheel to integrally rotate around the rotation axis; and the driven disc is used for outputting torque. The torque input disc and the driven disc are axially disposed between the first and second axial load bearing portions, the torque input disc being closer to the first axial load bearing portion and the driven disc being closer to the second axial load bearing portion. The torque input disc and the driven disc abut against each other with a certain axial force, and the driven disc is driven to rotate around the rotation axis through the friction force between the torque input disc and the driven disc. The present disclosure also relates to a transmission assembly including such a torque limiter and a vehicle including the transmission assembly.

The invention relates to the technical field of railway line flaw detection, in particular to railway line automatic comprehensive flaw detection equipment which comprises two steel rails and a flaw detection car and further comprises a C-shaped mounting plate, a buffer assembly, a waist detection mechanism and a bottom detection mechanism. A first fixing rod is transversely arranged in the C-shaped mounting plate, fixing sleeves are slidably connected to the two ends of the first fixing rod correspondingly, and balance assemblies are arranged at the ends, away from each other, of the two fixing sleeves correspondingly. The device has the advantages that different detection assemblies are arranged for different detection areas, so that steel rail detection of different parts is more efficient and accurate, it is ensured that different types of defects can be detected, the detection period is shortened, the balance assembly and the buffer assembly cooperate with each other to enable the head detection assembly to keep a dynamic balance state, and the detection efficiency is improved. The probe is effectively protected from vibration damage, and the adaptability of the probe to the change of the steel rail and the detection stability of the probe are improved.

A water conservancy pipeline measuring device belongs to the technical field of pipeline measurement and comprises a pipeline and further comprises a bottom plate, a supporting unit is arranged on the bottom plate, a driving unit, a graduated scale, a measuring unit and an inner supporting unit are arranged on the supporting unit, the measuring unit is used for measuring the inner diameter, the outer diameter and the thickness of the pipeline, and the inner supporting unit is used for inner supporting positioning of the pipeline. The driving unit drives the measuring unit and the inner supporting unit to play a role at the same time. According to the invention, the same measuring device is adopted, and a single measuring step is utilized, so that the detection of three linear dimensions of the inner diameter, the outer diameter and the thickness of the pipeline can be simultaneously met, and compared with the traditional equipment which can only meet the measurement of the inner diameter of the pipeline at a single time, the comprehensive requirement on the measurement of the pipeline dimension during actual measurement can be more efficiently and comprehensively met; and the whole measurement process is carried out based on a stable and uniform reference point, so that errors caused by inconsistent reference points are fundamentally eliminated.

A dynamic wind-resistant flexible photovoltaic power generation mount system, in which multiple photovoltaic panels are mounted astride a same load-bearing cable and connected in series to form a flat-plate-type photovoltaic power generation suspension cable. Each photovoltaic panel can sway with the wind around the load-bearing cable. The present application overcomes the defects of existing static wind-resistant technologies, pioneers a new dynamic wind-resistant approach, reduces wind resistance, and achieves an exceptionally strong wind-resistant effect. The present application allows for an increased span, reduces the number of pile foundations, and minimally interferes with large-scale agricultural machinery operation. The movement speed of shadows is rapid, so that crop photosynthesis is not affected, and instead, crop growth is stimulated and agricultural yield and income are increased.

The invention discloses a closed multifunctional integrated air supply unit and a suspension system, and the air supply unit comprises a compressor which comprises a motor and a compression pump in transmission connection with the motor; the distribution valve assembly is provided with a distribution gas channel used for guiding gas sent out by the compression pump to needed components. The dryer comprises a dryer shell and a drying agent arranged in the dryer shell, and the dryer is used for drying the gas sent out by the compression pump; the dryer shell is arranged on the motor in a sleeving mode, a drying bin is formed between the dryer shell and the motor shell, and the drying agent is arranged in the drying bin. When the drying agent needs to be regenerated, as the drying bin is formed on the outer side of the shell of the motor, the drying agent can absorb heat generated by rotation of the motor, and the regeneration efficiency of the drying agent can be greatly improved.

The invention discloses a gas-liquid low-temperature two-phase flow precise monitoring and metering test system, which comprises a segmented sensing acquisition module, a high-speed signal analysis module, a pulsation resonance identification module, an active damping control module, a phase change intelligent identification module and a monitoring metering output module, a plurality of groups of separated fluid dynamic response sensors are arranged in a low-temperature two-phase flow pipeline and are respectively positioned at a two-phase mixing inlet section, a middle stable section and an outlet section, so that segmented data acquisition is realized. The method has the advantages that the resonance risk caused by gas-liquid phase change can be accurately identified, a damping structure is regulated and controlled in real time, and system resonance and sensor damage are effectively avoided; meanwhile, through multi-point flow velocity fusion and gas phase molar fraction dynamic correction, high-precision measurement of the two-phase fluid volume flow is achieved, the measurement stability and the system safety are improved, and the device is widely suitable for low-temperature gas-liquid mixed transportation scenes.

The invention relates to the field of unmanned aerial vehicles, and discloses a high-wind-resistance multi-rotor unmanned aerial vehicle which comprises a vehicle body and vehicle arm supports arrayed on the side face of the vehicle body, a first motor is arranged at the tail end of each vehicle arm support, a propeller part is installed on an output shaft of each first motor, and the propeller parts are driven by steering engines to change the inclination angle; when the unmanned aerial vehicle encounters strong crosswind, the resistance of the unmanned aerial vehicle to the crosswind is improved by changing the rotation angles of the corresponding propellers and the propeller parts, so that the stability of the unmanned aerial vehicle encountering the strong crosswind in the flying process is improved, the thrust vector direction is changed, and the compensation force opposite to the wind pressure direction is generated. According to the dynamic adjustment mechanism, the unmanned aerial vehicle can keep the flight path stable under the strong crosswind condition, and the problem of flight path deviation caused by the fixed thrust direction of a traditional unmanned aerial vehicle is effectively avoided.

The invention provides a novel shock absorber which comprises a top plate, a bottom plate, a main shock absorption device and a complete machine horizontal shock absorption adjusting mechanism, the complete machine horizontal shock absorption adjusting mechanism is arranged around the main shock absorption device, and the complete machine horizontal shock absorption adjusting mechanism comprises a tension spring fixing block, a shock absorption adjusting tension spring and a shock absorption adjusting fixing block. The tension spring fixing block is located on the side, close to the bottom plate, of the top plate and fixedly connected with the top plate, the vibration reduction adjusting fixing block is perpendicular to the bottom plate and fixed to the vertex angle position of the bottom plate, one end of the vibration reduction adjusting tension spring is fixedly connected with the tension spring fixing block, and the other end of the vibration reduction adjusting tension spring is connected with the vibration reduction adjusting fixing block through the vibration reduction steel wire. According to the shock absorber, the complete machine horizontal shock absorption adjusting mechanism which is arranged around the spring shock absorption assembly and fixedly connected with the top plate is additionally arranged, the deviation problem of the shock absorber is adjusted through the shock absorption adjusting tension spring and the shock absorption steel wire, and adjustment is easy and convenient to achieve.

A diagnostic method localizes technical faults in a motion system that includes a base adapted to receive a motion stage for equipment, a machine frame resting on the floor, dampers adapted to support the base, and an active isolation system arranged between the base and the machine frame. The active isolation system and the base form a mechanical system. The active isolation system includes actuators, adapted to impart six degree-of-freedom (DOF) motion to the base in a reference frame, and inertial sensors adapted to provide a six DOF measurement of the base's motion. The method includes: i) applying a control signal for actuating or contributing to the actuation of the actuators of the active isolation system to impart a motion to the base; ii) obtaining, with the inertial sensors, a six DOF measurement of the base's motion relative to a reference point; iii) creating a measured process sensitivity matrix of the mechanical system using the six DOF measurement; and iv) determining, based on the measured process sensitivity matrix, whether all the actuators and sensors of the active isolation system are working as expected and / or whether there is a pivot point impeding the movement of the base.