464 results about "Gear system" patented technology

A seat adjustment mechanism includes a first component and a second component movable relative to the first component. A drive mechanism is drivingly connected to the second component for moving the second component relative to the first component. The drive mechanism includes a drive motor drivingly connected to a first gear member having conical involute teeth. A second gear member includes conical involute teeth in meshing engagement with the conical involute teeth of the first gear member. The conical involute teeth have a tapered tooth thickness, a tapered root and a tapered outside diameter.

The invention relates to the technical field of furnace shell welding, in particular to a gas industrial furnace shell welding device which integrates a radial circular seam and an axial longitudinal seam, a servo motor drives a planetary gear train through an intermittent sheave, a rotating shell drives a clamped furnace shell to rotate, and radial welding is completed; after a bottom clamping jaw instantly locks a shell, power is switched to a planet carrier, an outer mounting arm drives a driven scraping arm to grind the inner wall while axially moving, welding and grinding synchronization is achieved, a bidirectional pushing seat crank sliding block mechanism continuously rotates in a one-way mode to push and pull the furnace shell in a two-way mode, whole-circle accurate grinding is achieved during resetting, and six sets of air cylinder lead screw adjustable clamping jaws conduct internal and external synchronous supporting. The outer supporting cylinder is prevented from deformation, secondary clamping is not needed in the whole process, butt joint of multiple sections of furnace shells is completed at a time, continuous filling of a longitudinal weld bead can be completed when a circular seam is still in a high-temperature plastic stage through instantaneous switching of clamping and stopping, and the welding quality of a T-shaped connector area is improved.

The invention relates to the technical field of mechanical transmission, in particular to a reinforcement learning compensation method and system for gear multi-body dynamics constraint, and the method comprises the steps: building a multi-body dynamics digital twinborn model containing bearing rigidity and gear meshing force; constructing an adaptive reward function based on nonlinear manifold mapping, and dividing a system state space into a small deviation domain and a large deviation domain according to an angle deviation threshold value; training the multi-body dynamic model based on a depth deterministic strategy gradient algorithm to obtain a compensation strategy; the obtained compensation strategy is applied to a multi-body dynamic model, and an optimal compensation signal is obtained through self-adaptive fusion of static compensation and dynamic compensation, so that the training efficiency of a reinforcement learning algorithm in a complex nonlinear system is improved, the adaptability of the system to working condition changes is enhanced, the vibration of a gear system is remarkably reduced, and the reliability of the system is improved. The angle control precision is improved, and the service life of equipment is prolonged.

The invention provides a drilling rig for geological exploration, and relates to the technical field of drilling, the drilling rig comprises a motor mounted on a lifting frame, the extending end of the motor is connected to an inner rod, an outer wheel is coaxially arranged outside the inner rod, a plurality of fixing rods are arranged at the upper end of the outer wheel at equal intervals, and the fixing rods are connected to the inner rod. The drilling device has the most prominent advantage that the drilling device has a unique anti-jamming protection mechanism, when a sampling pipe is jammed by a hard stratum or foreign matters in the drilling process, the sampling pipe can be prevented from being blocked by the anti-jamming protection mechanism, and the sampling pipe can be prevented from being blocked by the anti-jamming protection mechanism, so that the sampling pipe can be prevented from being blocked by the anti-jamming protection mechanism. Power transmission between the motor and the sampling pipe is not rigid connection any more, controlled separation is achieved through a designed combination of a gear system and a friction disc, the motor continues to operate, but not all torque is directly transmitted to the clamped sampling pipe, part of energy is converted into surrounding motion through a rotating wheel system, and therefore the sampling pipe can be separated. And the risk of burnout of the motor due to overload is effectively avoided.

An easily transportable exercise assembly has a platform housing that can support a user during an exercise. The exercise assembly has at least one gear system that has comprises a first face gear having a first plurality of concentric gear rings and a second face gear having a second plurality of concentric gear rings. There is a resistance mechanism within the platform housing. A first cable is operatively coupled with the first face gear and the resistance mechanism. A second cable is operatively coupled with the second face gear. The user of the exercise assembly manipulates an end of the second cable to experience a resistance in the second cable imparted from the resistance mechanism through the at least one gear system subassembly.

The invention belongs to the technical field of gear transmission system fault diagnosis, and particularly relates to a gear pitting kinetic model solving method based on microscopic surface topography. Comprising the following steps: establishing a tooth surface morphology and pitting defect model; the tooth surface morphology of the selected gear is sampled, and nonlinear excitation parameters in a gear transmission system are collected; a gear tooth surface morphology mathematical model based on the fractal dimension D and the fractal roughness G is established, and a mixed elastohydrodynamic lubrication coupling analysis mathematical model of the pitted gear under the rough surface is established based on the relation that the curvature radius, the dynamic load, the oil film entrainment speed and the like change along with the change of the meshing position under different surface roughness. And solving the non-linear dynamic mathematical model of the gear with the rough surface. According to the method, the influence of the surface roughness on the rigidity attenuation and pitting extension of the gear can be accurately quantified, the nonlinear dynamic behavior of the gear system under the complex lubrication condition is disclosed, and an analysis method support is provided for the pitting resistance design and life prediction of the gear.

The utility model relates to the technical field of transmission, in particular to a double-motor stepless speed change electric drive system. The double-motor stepless speed change electric drive system comprises a first motor, a second motor, a planetary gear train, a pedal crankshaft, a sun wheel overrun clutch and a gear ring overrun clutch. The sun gear and / or the gear ring are / is set as power input, and the planet carrier is set as power output; a rotor of the first motor can be connected with the sun gear, and a rotor of the second motor can be connected with the gear ring through the gear ring overrunning clutch. The gear ring is locked by the gear ring overrun clutch and can only rotate in the forward direction. The pedal crank shaft is connected with the sun gear through the sun gear overrun clutch so that torque can only be transmitted from the pedal crank shaft to the sun gear. Therefore, the double motors can cooperate with the planetary gear train to jointly meet the speed change requirement.

This is a lightweight and portable sit-to-stand lift that can be easily assembled. It comes with components that can be stowed on a transport wheelchair. The lift is designed with a grab bar in the handicap bathroom, which supports the wheelchair user and eliminates the need for a heavy base as part of the lift. It features a low-cost, non-backdrivable gear system and is driven forward and reversed by the hand-held flexible ratchet, contributing to greater portability.

This technology provides an advantage in reducing manufacturing costs when incorporating pin bodies into eccentric oscillating gear systems. [Solution] The system comprises a crankshaft 14 having an eccentric portion 12, a rocking member 16 that is rocked by the eccentric portion 12, an external gear group 18 that rocks together with the rocking member 16, an internal gear 20 that meshes with the external gear group 18, a first lateral member 22 positioned on one axial side with respect to the rocking member 16, and a pin body 46 that synchronizes the rotational component of the rocking member 16 with the first lateral member 22, with contact being made with a first recess 50 provided in the rocking member 16 and a second recess 52 provided in the first lateral member 22, respectively, wherein the pin body 46 is rotatably provided inside the first recess 50 and the second recess 52, respectively.

The invention discloses a planetary gear dynamic characteristic prediction method. Comprising the following steps: carrying out a planetary gear dynamic transmission test on a real planetary gear test bed, carrying out dynamic modeling on a healthy planetary gear, describing the vibration of a planetary gear system by adopting a fixed coordinate system fixed on a gear ring, providing a dynamic characteristic type, responding to signal analysis, and carrying out dynamic transmission. Comparing and judging the result obtained by analyzing the response signal obtained by the test with the result obtained by analyzing the response signal, and establishing a planetary gear dynamic fault knowledge base system, so as to form digital-analog combination in the field of planetary gear transmission, which is beneficial for identifying the dynamic characteristics of planetary gear transmission. The prediction efficiency of the dynamic characteristics of the planet gear and the prediction precision in the field of fault identification are improved, and the accuracy of dynamic characteristic identification is improved through continuous test and model interaction. And a planetary gear transmission dynamic characteristic knowledge base system is established to realize rapid and accurate analysis of vibration signals captured in tests and projects.

An activation system having a fixed protective plate (10) in which there are fixed drive means based on a reset coil (1) and a holding coil (2) and release means arranged in alignment, a mobile wedging means activated by the drive means, and wherein these mobile wedging means are arranged in parallel with respect to the drive means, one or two wedging rollers (6) according to if said roller is for a one-way safety gear system or for a two-way safety gear system, respectively. A compact system that can be adapted to the existing safety gear is achieved, wherein electromechanical drive is executed vertically, which saves in additional levers, susceptibility to failure is lower and the reset and holding coils are smaller.

The utility model discloses a mechanical gripper for mechanical automation equipment, which belongs to the field of mechanical grippers, comprises a fixed block, and is characterized in that a clamping device is arranged on the fixed block, a clamping jaw is hinged to the front surface of the fixed block through a rotating shaft, and a half gear is fixedly connected to the inner wall of the clamping jaw; the half gear is rotationally connected to the front face of the fixing block through a third rotating rod. The first motor drives the clamping jaw to move towards the right side, objects are clamped, direct abrasion is reduced through gear transmission, the service life of the mechanical jaw is prolonged, and the improved clamping device can provide more stable and reliable clamping force and positioning capacity. The precise transmission of the gear system can ensure that the clamping jaw moves more stably and the clamping force is more uniform, so that the stability and accuracy of clamped objects are improved, and the problems that in the background technology, due to the fact that a mechanical jaw is prone to abrasion in the long-time use process, a traditional mechanical jaw is inconvenient to replace, and the clamping efficiency is high are solved. And the clamping and positioning capability is low.

The invention belongs to the technical field of ships, and discloses a steering engine system installation method which comprises the following steps that a steering engine room is inverted, a steering engine platform is located above an operation area, and a rudder hole is perpendicular to the operation area; hoisting the rudder stock and loading the rudder stock into the rudder hole; the steering engine is placed on a rest stand above the steering engine base and located above the rudderstock; the rudderstock is moved until the lower end of the rudderstock is located below the upper rudder twist and above the lower rudder twist, and then the rudder blade is installed at the lower end of the rudderstock; the steering engine is lifted upwards and leaves the rest stand, after the rest stand is removed, the steering engine is downwards placed on the steering engine base and assembled with the rudderstock, the steering engine and the rudderstock are smoothly installed by adjusting and optimizing the installation sequence of the steering engine system and through a space and time dislocation method, and normal press-fitting operation can be conducted under the condition that the deck layer height is insufficient. In addition, the installation method avoids forming process holes in the hull structure, avoids damaging the hull structure and the strength, and also reduces the workload of field installation.

The disclosure relates to a transmission system for a human powered vehicle, or light electric vehicle, comprising a crank housing, a crank axle, a front sprocket mounted to an output shaft concentric with the crank axle, and a transmission having an input connected to the crank axle and an output connected to the output shaft. The transmission comprises a planetary gear system, configured to be operated according one of a plurality of different selectable transmission ratios, mounted on a lay shaft which is offset and parallel to the crank axle, and an input transmission stage for transmitting torque from the crank axle to an input of the planetary gear system, wherein the input transmission stage has a speed increasing transmission ratio.

The invention discloses an anti-backlash control method and device for a dual-motor driving gear system, and relates to the technical field of servo control, and the method comprises the steps: obtaining the information of the dual-motor driving gear system, obtaining the reference position information of a large gear and the actual position information of the large gear based on the dual-motor driving gear system, and according to the reference position information and the actual position information of the bull gear, based on torque coupling compensation, obtaining a backlash-canceling bias current. Through cooperative control of the two motors, torque deviation is compensated in real time, the return difference problem in gear transmission can be effectively eliminated, a torque coupling compensation control algorithm based on speed deviation can quickly respond to load change and motion state switching, it is ensured that the system is still kept stable under the high-dynamic condition, and the stability of the system is improved. And a torque balance mechanism of dual-motor cooperative work improves the stability and anti-interference capability of the system, and meets the precision transmission requirements under complex working conditions.

The invention discloses a combinable multi-way valve adopting a double-valve-element structure, and relates to the technical field of new energy automobile heat pump heat management systems, the combinable multi-way valve comprises a valve body, a first valve element, a second valve element, a valve element driving unit and a plurality of water pipe connectors; according to the combinable multi-way valve adopting the double-valve-element structure, the two independent valve cavities are formed in the single valve body, and the first valve element and the second valve element which are controlled by the valve element driving unit through a synchronous and asynchronous gear system are arranged; through cooperation of a middle sealing ring used for isolating a valve cavity and a connector sealing ring used for guaranteeing external sealing, cooperative and non-cooperative accurate rotation control over the two cylindrical valve elements can be achieved through a single motor driving system, and therefore the purpose that the two cylindrical valve elements can be accurately rotated and controlled on the premise that reliable sealing and independent action of the valve elements are guaranteed is achieved. The complexity of a mechanical structure and an electric control system controlled by multiple channels is remarkably simplified, and a solid structural foundation is laid for further realizing multifunctional integration.

The utility model relates to the technical field of bridge construction, and discloses a driving wheel set mechanism of a steel box girder pushing system, which comprises a base, stand columns are arranged at four corners of the top of the base, a hydraulic oil cylinder is arranged at the top of the base, and a lifting shell is arranged at one end of a piston rod of the hydraulic oil cylinder. A plurality of driving rollers are movably installed in the lifting shell, a driving motor is installed on the outer wall of one side of the lifting shell, the lifting shell is pushed through the hydraulic oil cylinder, tight contact between the driving rollers and the bottom of the steel box girder is achieved, and the steel box girder is effectively driven to move horizontally through the driving motor and a gear system. In the pushing driving process, the limiting wheel is in close contact with the side edge of the steel box girder by adjusting the position of the movable seat, the steel box girder can be limited, deviation of the steel box girder is prevented, the stability and safety in the pushing process are improved, the pushing accuracy is effectively guaranteed, construction errors caused by deviation are reduced, and the construction efficiency is improved. And the overall construction efficiency and precision are improved.

A reel system includes a fishing reel including a spool, an electrical module, and a multi-gear system. The electrical module is coupled to the fishing reel. The electrical module includes a motor configured to turn the spool. A first position in the multi-gear system is configured to turn the spool via the motor.

The invention relates to a working condition following gear wear monitoring and predicting method based on a vibration signal, belongs to the technical field of gear transmission, and solves the problem that influence of different working conditions and different wear states of different positions of a gear cannot be considered in gear wear monitoring and prediction in the prior art. Comprising the following steps: S1, establishing a working condition Map graph based on dynamic working condition division of multi-source sensor fusion, and updating the working condition Map graph in real time; s2, establishing an Archard wear correction model, and calculating the wear extent of the gear; s3, establishing a gear nonlinear vibration model considering wear and clearance influence, and solving a vibration signal of a gear system; s4, a CNN-LSTM mixed wear diagnosis model is established, and training is carried out; and S5, acquiring and processing in real time to obtain a vibration signal of the gear system, and inputting the vibration signal into the CNN-LSTM mixed wear diagnosis model to obtain the current wear state probability distribution of the gear and the wear development trend prediction of the gear.

An operable implant adapted for implantation into a patient's body. The operable implant comprises an operating device and a body-engaging portion, the operating device comprising an electric motor including a stationary part containing a plurality of coils and a movable part containing a plurality of magnets, such that sequential energization of the coils magnetically propels the magnets and, thereby, the movable part. The operating device further comprises an encapsulation adapted to hermetically encapsulate the coils of the stationary part, thereby forming a seal between the stationary part and the movable part, which is propelled by the contained magnets, such that the coils of the stationary part are sealed from bodily fluids when implanted.

A fan drive gear system for a turbine engine includes a gear system with a plurality of compound intermediate gears that each include a first gear portion and a second gear portion. The second gear portion includes a forward gear portion and an aft gear portion and a ring gear assembly includes a forward ring gear that is engaged to the forward gear portion and an aft ring gear that is engaged to the aft gear portion. A carrier supports rotation of the plurality of intermediate gears with a plurality of corresponding journal bearing assemblies.

Systems for activating and deactivating an emergency landing gear system in an aircraft include a rotary toggle mechanism that actuates a switch. When the switch is actuated, the emergency landing gear system is activated and the operation of one or more other aircraft systems may be modified accordingly. The rotary toggle mechanism may be placed in three different states: a ready state, an active state, and a reset state. In the ready state, the switch is not actuated and the emergency landing gear system is not activated. In the active state the switch is actuated and the emergency landing gear system is activated. While the mechanism is in the active state the mechanism cannot be returned to the ready state without first passing through the reset state.

A compact gear reduction unit (1) of the type applying a transmission shaft subjected to radial loads, comprising a substantially box-like body (2) inside which a gear system (3) is housed for the transmission of the rotary motion from a drive shaft (4) to a transmission shaft (5), provided with an output reduction stage (7) of the planetary type. The output reduction stage (7) comprises a driving sun gear (8) rotating about a main axis (A) and an annular gear (9) associated integrally with the substantially box-like body (2), between which a plurality of planet gears (10) is engaged, supported by a transmission carrier (11) for the rotation about a respective longitudinal axis parallel to the main axis (A), which in turn rotates about the main axis and is associated so as to rotate integrally with the transmission shaft (5) at a connection region (12). The reduction unit (1) is further provided with a rolling device (14) adapted to support the radial loads associated with the transmission shaft (5) for the rotary guidance of the transmission shaft. The rolling device (14) comprises a first radial bearing (15) interposed between the substantially box-like body (2) and the carrier (11) in the radial direction and a second radial bearing (16) interposed radially between the body and the transmission shaft (5), the first and second bearings (15, 16) being arranged axially on opposite sides of the connection region (12).

A harmonic gear system, having: a housing; an input shaft having an aft end within the housing that defines a wave generator; a wave generator bearing; first and second nested cup-shaped flex splines that are grounded to the housing, the first and second flex splines are biased by the wave generator via the wave generator bearing; an output shaft having a forward end that is within the housing, and a radial flange at the forward end; first and second nested circular splined shafts within the housing, the first and second circular splined shafts are connected to the radial flange of the output shaft and are driven by ones of the first and second flex splines, to thereby drive the output shaft; and a bearing between the first and second circular splined shafts.

Landing gear system (5) for an aircraft (1), the landing gear system comprising a nose landing gear (2) and at least one tail landing gear, the tail landing gear being a bogie balancer and comprising at least two wheels, the landing gear system being further equipped with a hybrid braking system comprising at least one friction brake and at least one auxiliary brake providing energy dissipation by means other than friction, at least one of the wheels of the tail landing gear being equipped only with one or more auxiliary brakes and at least one of the wheels of the tail landing gear being equipped only with one or more friction brakes, all the wheels of the tail landing gear being equipped with at least one auxiliary brake or one friction brake. Aircraft equipped with such a landing gear system. FIGURE OF THE ABSTRACT: Fig.1

The present invention relates to a carrier structure including a plate-stacked carrier housing, and a reduction gear set and a differential gear set using a planetary gear system are provided in the plate-stacked carrier housing. The carrier structure including the plate-stacked carrier housing according to the present invention can include a plate-stacked carrier for accommodating a reduction gear set and a differential gear set composed of a planetary gear system, an input shaft provided at one side of the carrier to receive power from a motor and formed with a gear at an outer side, the reduction gear set to receive power from the input shaft, the differential gear set to receive power from the reduction gear set, and left and right output shafts provided through the carrier and formed with gears at outer sides to receive power from the differential gear set. The present invention can achieve compactness by providing the reduction gear set and the differential gear set in the carrier, and a reduction ratio can be selected by forming a fixed gear with an internal gear or an external gear.

This invention discloses a multi-objective optimization method for modifying the rear gear system of an engine using an attention-integrated mechanism, relating to the fields of engine NVH control and transmission system design technology. The method first constructs a multibody dynamics model of the engine's rear gear system, including idle speed, rated power point, and common operating speed conditions. The common operating speed conditions are selected as the global optimization benchmark, and a genetic algorithm is used to obtain the initial modification parameter combination. Then, an attention-integrated mechanism is introduced, dynamically and iteratively adjusting the weight coefficients of each operating condition based on the positive or negative state of the error improvement value, and performing a secondary verification of the initial modification parameters. If the weighted total improvement value after iteration is less than zero, negative screening is performed to eliminate the affected components. Finally, the optimization effect is verified by establishing a "dynamic force-vibration-noise" simulation chain. This invention effectively resolves the physical conflict between idling knocking and high-speed whistling by constructing a nonlinear decision model of "dynamic weight allocation + negative screening of operating conditions," achieving robust improvement in the NVH performance of the engine gear system across the entire operating range.

The invention discloses a washing machine clutch movement automatic oil injection and spin riveting detection all-in-one machine which comprises a brake wheel and reduction gear train conveying device, a first material moving device, an oil injection device, a clutch shaft and input shaft conveying and material moving device, a second material moving device, a rotary riveting device, a turnover device, a detection device and a controller. The control device is electrically connected with the brake wheel and reduction gear train conveying device, the first material moving device, the oil injection device, the clutch shaft and input shaft conveying and material moving device, the rotary riveting device, the second material moving device, the turnover device and the detection device. The automatic riveting machine has the following advantages that under the control of the controller, the brake wheel and reduction gear train conveying device, the first material moving device, the oil injection device, the clutch shaft and input shaft conveying and material moving device, the rotary riveting device, the second material moving device, the turnover device and the detection device are matched to automatically complete oil injection, spin riveting and detection of the clutch core.

The utility model belongs to the technical field of dog cabin air conditioner installation, and discloses a dog cabin air conditioner outdoor unit installation fixing structure and a dog cabin thereof.The dog cabin air conditioner outdoor unit installation fixing structure comprises a [-shaped frame, two hole plates are fixedly installed on the inner wall of the bottom of the [-shaped frame, and two installation frames are installed on the outer wall of the [-shaped frame in a sliding mode; fixing mechanisms are respectively arranged in the two mounting frames; the fixing mechanism comprises a rectangular groove formed in the mounting frame, one side of the rectangular groove penetrates through the mounting frame, two second rotating rods are rotationally mounted on the side, close to the mounting frame, of the rectangular groove, and a bevel gear system is driven by rotating the first rotating rods, so that a moving block moves in the axis direction of the second rotating rods; according to the device, compared with an air conditioner frame above the device, the device is quicker, simpler and more convenient to disassemble, the installation and adjustment time is greatly saved, damage to the outer wall of the dog cabin caused by frequent disassembly and assembly is avoided, and the service life of the dog cabin is prolonged.

The invention discloses a dynamic management and control system and method for energy of a power transmission system of a heavy commercial vehicle, and belongs to the technical field of energy recovery of heavy trucks, and the dynamic management and control system comprises a power takeoff which is used for extracting rotary power from a gear train of a transmission as required and providing mechanical energy input for a generator; the electromagnetic valve is used for receiving the electric signal instruction of the control unit and driving the clutch action of the power takeoff by controlling a gas circuit, so that the power takeoff is connected with or separated from a power output gear of the transmission; the generator converts the mechanical energy input by the power takeoff into electric energy and sends the electric energy to the energy storage device; and the control unit is used for acquiring state parameters of the heavy commercial vehicle in real time, judging the current operation condition of the vehicle and the intention of a driver based on the state parameters, and generating a decision instruction based on the operation condition and the intention of the driver. The defects that in the prior art, the energy recovery function and the auxiliary braking function are separated, efficiency is not high, and control is not precise are successfully overcome.