1557 results about "Gear transmission" patented technology

The invention provides an organic waste gas separation and treatment device, which relates to the technical field of waste gas separation and treatment, and comprises a device main body. An activated carbon adsorption tower is arranged at the right end position of the device main body. The activated carbon adsorption tower is provided with an inlet and outlet gas isolation device, comprising four movable cover plates, four rubber pads and eight threaded rods. The activated carbon adsorption tower is isolated by an isolation plate, and has two independent working chambers, only one of which keeps working. When the activated carbon filter plate in one chamber is saturated, a motor is started to drive the rotation, and through a series of gear transmission, the threaded rod is finally rotated synchronously. The rotation of the threaded rod drives the translation block to move, and the translation block drives the movable cover plate and the rubber pad to move. The movable cover plate of the left chamber blocks the rectangular groove, and the movable cover plate of the right chamber leaves the rectangular groove. The waste gas is processed from the right chamber instead, and the left chamber stops processing. This avoids the reduction of the treatment effect caused by the saturation of the activated carbon filter plate, and improves the waste gas treatment function.

The utility model belongs to the technical field of tractors, and particularly relates to a tractor combined motor gearbox assembly which comprises a gearbox body, a generator and a driving motor are coaxially arranged on the side wall of the gearbox body, the outer end of an input shaft of the generator is in transmission connection with the crankshaft output end of an engine, and an input shaft is supported on the gearbox body. The input shaft is a hollow shaft, one end of the PTO shaft axially penetrates through the output shaft of the driving motor and is connected with a spline at the inner end of the input shaft of the generator, the other end of the PTO shaft is supported in an inner hole of the input shaft through a lining, the input shaft is connected with the inner end of the output shaft of the driving motor through a spline sleeve, and the gearbox body supports the output shaft. A gear transmission assembly is arranged between the input shaft and the output shaft. The PTO shaft is directly connected with the output shaft of the engine, the engine provides power for the generator to provide electric energy for the driving motor, then the driving motor provides power for the gearbox assembly, the operation requirement of the tractor is met, and stepless speed change can be achieved.

Provided is a herringbone planetary gear transmission device with a constant meshing characteristics constructed tooth pair, which relates to the technical field of gear transmission. The transmission device includes a sun gear with a constructed tooth pair, a planetary gear with a constructed tooth pair and an internal gear with a constructed tooth pair based on conjugate curves. Normal tooth profiles of the gears with a constructed tooth pair in the present disclosure are all the same combined curve and can be machined by using the same cutter. A common normal at an inflection point or a tangent point of the curve passes through a pitch point of a meshing gear pair, and a sliding ratio of the meshing gear pair is adjusted according to an adjusted position of the inflection point or the tangent point. A contact ratio of the meshing gear pair is designed as an integer.

The invention provides an asymmetric efficiency transmission system design method, which is applied to the technical field of transmission control, and comprises the following steps: S1, constructing a main transmission path model with a first driving side shaft part and a first load side shaft part, S2, constructing a shunt transmission path model with a second driving side shaft part and a second load side shaft part, and S3, constructing a shunt transmission path model with a second driving side shaft part and a second load side shaft part. S3, a parallel node model of the main and shunt transmission paths is constructed, a first load side shaft part and a second load side shaft part are connected through a worm and gear transmission structure, and a second load side shaft with the axial constraint rigidity being # imgabs0 # serves as a worm shaft; according to the design method, the total positive transmission efficiency and the total reverse transmission efficiency of the system and the relational expression between the parameters are obtained, model selection design is conducted on the actual rigidity characteristics and the transmission characteristics of all the models according to the relational expression, the transmission system can have the high positive transmission efficiency and the low reverse transmission efficiency through the design method, and the reverse transmission efficiency is flexible and adjustable.

The invention discloses a face gear planetary transmission system dynamic uniform load test platform and test method, and belongs to the field of gear transmission, and the test platform comprises a rack, a drive motor, a step-up gear box, a face gear planetary transmission system, a magnetic powder brake, a torque sensor, a slip ring, a stress strain test system and the like. The face gear planetary transmission system comprises an input face gear, a planet wheel, a planet carrier, a fixed face gear and the like. According to the dynamic uniform load test, stress values at the tooth root of the face gear and the tooth root of the planetary gear are measured mainly through strain gauges, and the corresponding relation between the tooth root stress and the meshing force at the gear meshing point is obtained through finite element simulation. And calculating the dynamic uniform load coefficient according to the dynamic meshing force root-mean-square values and the average values obtained at the tooth roots of the face gear and the planetary gear. By testing and analyzing the dynamic uniform load coefficient, the load distribution characteristic of the face gear planetary transmission system can be accurately revealed, a scientific basis is provided for structural parameter optimization, meshing performance improvement and reliability design of the face gear planetary transmission system, and then accurate and high-performance design of the transmission system is achieved.

The utility model relates to a periodic modification structure of a reciprocating mechanical transmission gear, which comprises a transmission gear, a non-meshing surface of the transmission gear is modified to form a meshing clearance, and the meshing surface is gapless. The gear backlash on the meshing side of the gear is eliminated to prevent the gear from being knocked in the return stroke due to the alternate change of positive and negative torque, the non-meshing side is shaped to form the backlash to prevent the interference seizure phenomenon in the gear transmission process, and the gear transmission can achieve the states of more stable operation and lower vibration noise after being changed. The transmission gear is especially suitable for transmission gears of piston connecting rod reciprocating motion machines such as Stirling engines and diesel engines.

The invention relates to a tilt actuation system of a tilt-rotor aircraft. The tilt actuation system comprises a tilt actuation unit, an active power input unit and a backup power input unit, the tilting actuation unit comprises a ball screw and a screw nut used in cooperation with the ball screw. The driving power input unit comprises a driving power input unit shell, driving power input equipment, a planetary gear train in transmission connection with an input shaft of the driving power input equipment and a first triple gear in transmission connection with the planetary gear train. The backup power input unit comprises a backup power input unit shell, backup power input equipment, a second triple gear in transmission connection with an input shaft of the backup power input equipment, and a worm and gear mechanism in transmission connection with the second triple gear; the problems that an existing tilting actuation system of the tilting rotor aircraft is poor in operability, low in control efficiency, poor in stability and prone to system failure, and consequently the flight safety cannot be guaranteed are solved.

A first sliding rail and a second sliding rail are arranged in a wheel rim of the steering wheel, a motor and a gear transmission mechanism are arranged in a steering column of the steering wheel, and one end of a first sliding sleeve structure and one end of a second sliding sleeve structure are connected with the output end of the gear transmission mechanism; the tail ends, located in the steering wheel rim, of the first sliding sleeve structure and the second sliding sleeve structure are provided with a first supporting tool and a second supporting tool respectively. The gear transmission mechanism is driven by the motor to rotate, then the first sliding sleeve structure and the second sliding sleeve structure are driven to slide on the first sliding rail and the second sliding rail correspondingly, when sliding to the tail ends of the sliding rails, the first supporting tool and the second supporting tool can be pushed out to a steering wheel rim, and the supporting tools increase an acting point for the palm; and the problem of unstable holding caused by incomplete thumb tail joint and insufficient thumb strength of a driver is solved.

The invention discloses a bevel angle transmission marine gear transmission device, which relates to the technical field of gear transmission, and comprises a box body, an input component, a transmission component and an output component, an ahead running transmission gear is fixed to an input shaft of the input component, and an ahead running driving gear with a clutch and a piston is installed on the input shaft in an empty sleeving mode. And a reversing transmission gear is fixed on a transmission shaft of the transmission part. The invention belongs to the breakthrough of the prior art, and can meet the requirements of inclination of an input shaft, a reversing shaft and an output shaft of a gear box by utilizing the displacement principle of gears with different center distances and the meshing transmission principle of crossed shaft gears. Gears on the three shafts can be mutually meshed and effectively work, the requirement that the high-speed boat inclines relative to the water surface when advancing on the water at a high speed is met, the diesel engine and the gear box are horizontally arranged in the cabin, the output shaft of the gear box outputs at a certain oblique angle, the structure is reliable, the process is easy to implement, and the high-speed boat has the advantages of being reasonable and compact in structural arrangement, high in transmission efficiency, low in cost and the like. And the weight is light.

The invention discloses a lifting device and method for storage and transfer of an airship pod, and relates to the technical field of storage and transfer of airship pods.The lifting device comprises an upper bracket, two lifting driving assemblies, a middle support, a damping spring, a base, four wheels and a traction rod; through the modular truss structure design, the bearing capacity and the lightweight requirement are both considered; a multi-dimensional vibration reduction system is formed by the vibration reduction springs which are arranged horizontally, longitudinally and transversely and the soft rubber buffer cushion, and the structure and function integrity of the pod in the storage and transfer process can be effectively protected by matching with the flexible moving and locking functions of the universal wheels with brakes; the lifting driving assembly adopts worm and gear transmission to achieve stable lifting and + / -15-degree pitch angle adjustment, an operating hand wheel designed in an ergonomic mode is combined, electric drive is matched, and the requirement for precise adjustment and control of pods is met. And the operation efficiency is greatly improved through the quick disassembly and assembly design of the positioning and fixing assembly and the traction rod.

The invention discloses a calculation method and system for dynamic response of a deceleration drive assembly under multi-source excitation, and the method comprises the following steps: building a kinetic equation of a gear transmission system based on an overall stiffness matrix, a mass matrix and a damping matrix of the gear transmission system, and carrying out the calculation to obtain a dynamic flexibility matrix of the gear transmission system; establishing a hub motor deceleration driving assembly shell finite element model, and obtaining a system overall kinetic model based on the assembly shell finite element model and the gear transmission system kinetic equation; calculating the dynamic meshing force of the gear as the mechanical excitation of the system; calculating the radial electromagnetic force of the permanent magnet synchronous motor under the no-load and load working conditions as the electromagnetic excitation of the system; mechanical excitation and electromagnetic excitation are loaded to the gear transmission system, and vibration displacement response, speed response and acceleration response at each node of the system are calculated in combination with the dynamic flexibility matrix. According to the invention, the vibration characteristics of the deceleration driving assembly in the actual operation process can be comprehensively and truly reflected.

The utility model relates to an electric sunshade curtain with a gear box device, which comprises a motor providing a power source, the motor transmits power to a driving wheel through a connecting rod, the driving wheel is meshed with a driven wheel in a gear box to transmit power, and the gear box comprises a box body serving as a shell. A bearing seat for accommodating a first rolling bearing on the synchronizing wheel is arranged on the inner wall of the box body, the synchronizing wheel is provided with a power transmission cavity, the power transmission cavity is connected with a transmission shaft of the driven wheel, the driven wheel is provided with an inner gear and a second step circular surface, and a second rolling bearing is assembled on the second step circular surface; the second rolling bearing is positioned through a bearing supporting ring of an upper cover plate, and the upper cover plate is connected with the box body through screws. According to the novel internal structure of the gearbox, due to the fact that gear transmission is of an internal meshing structure, certain inclusiveness is achieved, even if the internal structure changes greatly, normal rotation can be maintained, the gear penetration depth is high, and the mute performance is good.

The invention discloses a longitudinal tension test load device for a super-tonnage lifting hook and a test method.The longitudinal tension test load device comprises a foundation bearing platform, a load test cabin is arranged on the top face of the foundation bearing platform, and a plurality of lifting lugs used for lifting are fixedly installed on the top face of the load test cabin; a servo driving motor, a precise ball screw, a longitudinal sliding base, a main loading hydraulic cylinder, an adjustable supporting frame, a sliding type bearing frame, a main locking connecting rod, a connecting rod supporting frame, a gear transmission block, a fan-shaped meshing gear, a driven connecting rod mechanism, a self-adaptive clamping module, a lateral mounting flange and a self-locking limiting plate are matched with one another; the position of the adjustable supporting frame on the hook claw can be adjusted for multiple tests, the industrial endoscope can detect cracks on the surface of the hook in the test process, the laser displacement sensor can monitor deformation of the claw, a worker detects flaws of the hook through the ultrasonic flaw detector, and the test effect on the hook is achieved.

The utility model discloses an electromagnetic double clutch type power mechanism, which comprises a motor and an electromagnetic transmission mechanism, the structure of the electromagnetic transmission mechanism comprises a fixing ring, two electromagnetic coils are arranged on the fixing ring in parallel, an armature is fixedly arranged on the outer side of each of two opposite ends in the axial direction of the fixing ring, and a clutch outer core is axially fixed with the fixing ring. A fast-gear clutch assembly and a slow-gear clutch assembly are arranged in the clutch outer core side by side in a circumferential transmission mode, and an inner shifting structure acting on the fast-gear clutch assembly and the slow-gear clutch assembly is arranged in the clutch outer core. A fast gear and slow gear transmission set in transmission connection with the transmission shaft is arranged in the clutch outer core and used for achieving fast gear and slow gear switching transmission. And the electromagnetic force of the two electromagnetic coils realizes the axial sliding of the clutch outer core, so that the fast-gear clutch assembly and the slow-gear clutch assembly are staggered for separation and reunion.

The invention relates to the technical field of tunnel construction equipment, and discloses compact grouting equipment for tunnel construction, which comprises a tunnel vehicle, a storage barrel and a stirring barrel system, by arranging a linkage structure of the distribution part and the stirring driving part, when a screw rod in an auger shell is used for conveying materials, meshing transmission of a main gear and an N ring is synchronously driven, a stirring rod in a storage barrel and a stirring barrel disturbing plate magnetically connected with the stirring rod are driven to conduct bidirectional stirring, and cooperative driving of automatic material matching and conveying and stirring power is achieved. The dredging part is linked with an elastic rod through an electric rod to form an elastic knocking mechanism, and cooperates with an inclined push plate to drive a hammer rod to perform reciprocating impact on the connecting pipe, so that slurry solidification and blockage are effectively prevented. The equipment innovatively adopts a gear transmission and magnetic linkage technology, realizes integration of functions of material delivery, stirring disturbance and pipeline dredging while removing a traditional stirring motor, remarkably reduces the overall height of the equipment, improves the trafficability of a narrow tunnel working condition, and ensures the accuracy of mortar proportioning.

The utility model relates to the field of speed reducers, and discloses a planetary gear speed reducer with lubrication adjustment, which comprises an outer shell, a first-stage planetary transmission pair, a second-stage planetary transmission pair and a third-stage planetary transmission pair are arranged in the outer shell, a first accommodating cavity is arranged between the first-stage planetary transmission pair, the second-stage planetary transmission pair and the third-stage planetary transmission pair and the outer shell, and a second accommodating cavity is arranged between the second-stage planetary transmission pair and the third-stage planetary transmission pair. A second containing cavity is formed between the output gear shaft and the outer shell, the first containing cavity is used for being filled with lubricating oil, and the second containing cavity is used for being filled with lubricating grease. An adjusting oil tank is further included and communicates with the first containing cavity through a pipeline. A separated lubricating structure is adopted, and the bearing of the output gear shaft and the gears of the planet wheel transmission pairs of all stages respectively use different lubricating media, so that different lubricating requirements of the output gear shaft and the gears are met; and the adjusting oil tank is arranged, lubricating oil volume expansion caused by temperature change is compensated, and lubricating oil overflow is avoided.

The utility model discloses a four-direction shuttle vehicle which comprises a vehicle body, an X-direction walking mechanism, a Y-direction walking mechanism, a two-way driving mechanism and a jacking reversing mechanism. The X-direction walking mechanism, the Y-direction walking mechanism, the two-way driving mechanism and the jacking reversing mechanism are arranged in the vehicle body. The X-direction walking mechanism drives the vehicle body to walk in the X direction, the Y-direction walking mechanism drives the vehicle body to walk in the Y direction, the two-way driving mechanism drives the X-direction walking mechanism and the Y-direction walking mechanism to operate at the same time, and the jacking reversing mechanism achieves lifting of the Y-direction walking mechanism so as to switch the X-direction walking mechanism or the Y-direction walking mechanism to make contact with the ground. The X-direction walking mechanism, the Y-direction walking mechanism and the jacking reversing mechanism are all in gear transmission, so that the problems of oil leakage of a hydraulic system and large size of a chain transmission system are effectively avoided; the structure is compact, the weight is light, and energy conservation and environmental protection are achieved.

The invention relates to a compact heavy-load cycloid oscillating tooth joint module which comprises a frameless torque motor, a joint shell, an eccentric shaft, a reverse cycloid wheel, a forward shock wave wheel, a middle connecting shaft, an epicycloid gear transmission system and a hypocycloid oscillating tooth transmission system. The frameless torque motor is installed in the joint shell, the output end of the frameless torque motor transmits torque to the eccentric shaft, the eccentric shaft drives the reverse cycloidal gear to rotate, and the reverse cycloidal gear and the forward shock wave wheel are connected through a middle connecting shaft and rotate in the same direction. Torque generated by the epicycloid gear transmission system is transmitted to the hypocycloid oscillating tooth transmission system, and the hypocycloid oscillating tooth transmission system outputs torque after speed reduction. The invention has the advantages of high precision, high rigidity, high bearing capacity, small volume, small back clearance and the like, can be used for application scenes with small installation space and heavy load requirements, and is particularly suitable for a small-volume heavy-load joint module of a collaborative robot.

The invention relates to a large-torque sealed transmission single-wheel vertical driving wheel which comprises a wheel assembly, a first transmission shaft, a second transmission shaft and a transmission motor. An output end gear of the first transmission shaft is connected with an input end gear of the wheel assembly for bevel gear transmission or staggered shaft bevel gear transmission; an input end gear of the first transmission shaft is connected with an output end gear of the second transmission shaft for straight tooth cylindrical gear transmission, helical tooth cylindrical gear transmission or herringbone tooth gear transmission; and an output end gear of the transmission motor is connected with an input end gear of the second transmission shaft. And through the multi-stage gear transmission design, the torque output capacity of the driving wheel is remarkably improved, and the requirement for heavy-load transportation is met. A sealed space is formed after the wheel disc base shell, the wheel disc middle disc and the wheel disc upper disc are assembled, dust, water and other impurities are effectively prevented from entering the driving wheel, the service life of a gear and a bearing is prolonged, and the reliability of a system is improved.

The utility model relates to a tractor gearbox transmission structure and a new energy tractor. The tractor gearbox transmission structure comprises a walking motor, a power output motor, a rear axle, a transmission first shaft and a transmission second shaft, the walking motor is connected with the transmission first shaft, the transmission first shaft is connected with the transmission second shaft through a planetary gear transmission mechanism, the transmission second shaft is connected with the rear axle, and the power output motor is connected with a third transmission shaft. The third transmission shaft is provided with a hybrid clutch and is connected with a first shaft of the transmission through the hybrid clutch and the power transmission assembly, the third transmission shaft is further connected with a PTO transmission assembly through a PTO clutch, and the PTO transmission assembly is connected with a PTO transmission shaft. The utility model has the advantage that the purpose of flexible use of the walking motor and the power output motor during low-load operation and high-load operation can be achieved.

The utility model discloses a locking device of an actuating system and the actuating system. The locking device of the actuating system comprises a locking part attached to the rotating part and provided with at least one locking protrusion; the driving component comprises a motor, an elastic element and a transmission element driven by the motor; the braking component is arranged between the locking component and the transmission element in a lever form; in the braking state, the transmission element is switched to the locking position, and the braking component keeps stopping of the locking protrusion under the action of the elastic element. In the release state, the transmission element is switched to the unlocking position, and the brake component is pushed by the transmission element to be kept at the position separated from the locking protrusion. The actuating system comprises an actuating motor, a gear transmission mechanism and a rotary output component, and one of the actuating motor, the gear transmission mechanism and the rotary output component is provided with the locking device of any scheme. The phase speed is higher, and the braking or releasing state is kept without continuous power supply.

The utility model relates to the technical field of automobile steering, and discloses a multi-stage gear type all-electric power steering device which comprises a control module and a power steering module. The control module comprises at least two steering control units which are connected with each other through SPI (Serial Peripheral Interface) signals; the power-assisted steering module comprises a power-assisted motor, a gear transmission mechanism, a planetary gear mechanism, a worm and gear mechanism, a shell, an input shaft and an output shaft, the power-assisted motor is arranged on the shell, the gear transmission mechanism, the planetary gear mechanism and the worm and gear mechanism are arranged in the shell, and the power-assisted motor is in transmission connection with the gear transmission mechanism; the planetary gear mechanism is connected with the gear transmission mechanism, and the worm and gear mechanism is connected with the planetary gear mechanism. The multi-stage gear type all-electric power steering device solves the limitation of an existing electric power steering device in the application field of commercial vehicles, and the pure electric steering device which is efficient, energy-saving, light and convenient in steering and good in controllability can be provided for passenger and goods commercial vehicles.

The invention relates to a dynamic response estimation method for a planetary gear system of an automatic transmission, belongs to the technical field of planetary gears of the automatic transmission, and solves the problems that the dynamic response estimation method of the automatic transmission in the prior art is limited in prediction precision and is difficult to accurately simulate the dynamic response in the gear shifting process. Comprising the following steps: acquiring component parameters, bearing parameters and control piece parameters of the planetary gear transmission system; based on the parameters and the state of the control member, constructing a control member dynamic model; and based on the component parameters, the bearing parameters and the control piece parameters, constructing a planetary gear transmission system dynamics model. Within a given time step, when an inner ring and an outer ring of a supporting bearing rotate at the same time, calculating a dynamic load fo and deformation deltao of a planet carrier / bearing seat to the outer ring of the bearing and a dynamic load fi and deformation deltai of a transmission shaft to the inner ring, and calculating a dynamic response of a system at the current moment; and a fourth-order Runge-Kutta numerical iteration algorithm is used to solve the dynamic response in the next time step length, and loop iteration is carried out until dynamic characteristic estimation is completed.

The invention aims to provide a virtual simulation method of a diesel engine movement mechanism considering rotation speed fluctuation. The method comprises the following steps: acquiring structure and material parameters of a valve mechanism, acquiring contact parameters of the valve mechanism, acquiring cam lift data, acquiring rigidity damping parameters and structure parameters of a gear transmission system, and acquiring cylinder pressure data. The output torque of a gas distribution unit, the angular acceleration of a cam shaft and the angular acceleration and torque of each gear are predicted respectively, the load torque state is judged, the crankshaft rotation angular acceleration is predicted, and the crankshaft dynamic angular velocity and the angular velocity fluctuation quantity are calculated. All motion mechanisms of the diesel engine are included, all kinetic parameters of the motion mechanisms of the diesel engine can be predicted, and the prediction result is complete. The influence of crankshaft rotating speed fluctuation caused by the load on the kinetic parameters of the diesel engine movement mechanism is considered, and the prediction result better conforms to engineering practice. Complex mathematical theories are not needed, a common numerical method can be adopted for solving, the calculation scale is small, and the calculation speed is high.

The invention relates to a hybrid speed reduction transmission equatorial telescope based on a crossed roller bearing. The equatorial telescope comprises a shell, a right ascension axis hybrid speed reduction transmission assembly, a declination axis speed reduction transmission assembly, the crossed roller bearing, a laser beam parallelism adjusting mechanism and a base. The right ascension shaft mixed speed reduction transmission assembly comprises a right ascension shaft motor, a right ascension first-stage speed reducer and a right ascension second-stage speed reducer, the right ascension first-stage speed reducer is a harmonic speed reducer, and the right ascension second-stage speed reducer is a worm and gear transmission pair; the declination axis speed reduction transmission assembly comprises a declination axis motor and a declination axis speed reducer; an outer ring of the crossed roller bearing is fixed on the rear shell, one end face of an inner ring is fixed with the output end of the right ascension shaft mixed speed reduction transmission assembly, and the other end face of the inner ring is fixed with the right ascension shaft output seat; and the declination shaft speed reduction transmission assembly is fixed on the right ascension shaft output seat. The equatorial telescope has the advantages of being high in degree of freedom, small in size, light in weight and high in bearing capacity, and the equatorial telescope is high in reduction ratio, stable in tracking, high in tracking precision and low in power consumption.

The invention relates to a heavy-duty commercial vehicle double-motor four-gear AMT electric drive axle which comprises an axle housing assembly, a speed reducer assembly, a wheel edge assembly and a half axle, the speed reducer assembly comprises a front speed reducer assembly and a rear speed reducer assembly, the front speed reducer assembly and the rear speed reducer assembly are fixed to the axle housing assembly, a motor I is arranged on the front speed reducer assembly, and a motor II is arranged on the rear speed reducer assembly. A motor I is arranged on the front reducer assembly, a motor II and a differential assembly are arranged on the rear reducer assembly, the differential assembly is connected with a half shaft, power of the front reducer assembly and the rear reducer assembly converges to output torque, the torque serves as a power torque output wheel end to drive a vehicle, the front reducer assembly is a fixed-speed-ratio reducer, and the rear reducer assembly is a three-gear AMT transmission assembly. A four-gear speed ratio can be formed through the front reducer assembly and the rear reducer assembly. The multi-gear transmission enables the motor to work in a high-efficiency area, has higher vehicle speed, acceleration capability and gradeability, and expands the high-efficiency area of the motor by utilizing speed ratio adjustment.

The embodiment of the invention provides a vehicle demand power prediction method and device, vehicle control equipment and a hybrid vehicle. Relates to the technical field of automobiles. The method comprises the steps that the current gear, the first shaft rotating speed, the second shaft rotating speed, the current accelerator opening degree, the current road slope information and the current vehicle weight information of a target hybrid vehicle are obtained; according to the first shaft rotating speed, the second shaft rotating speed and the gear transmission information of the adopted hybrid power gearbox, the third shaft rotating speed of a driving motor on the target hybrid power vehicle is calculated; according to the first shaft rotating speed of the engine, the second shaft rotating speed of the generator and the third shaft rotating speed of the driving motor, the initial peak value demand power of the target hybrid vehicle is calculated; and according to the current accelerator opening degree, the current road slope information and the current vehicle weight information, the initial peak demanded power is corrected, and the target demanded power of the target hybrid vehicle is obtained. According to the invention, the prediction precision of the demand power is effectively improved, and the optimization target of fuel economy is realized.

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 self-lubricating combined type planetary gear transmission mechanism. The self-lubricating combined type planetary gear transmission mechanism comprises a planet carrier, an eccentric sun gear, a rotating shaft, a planetary gear and a self-lubricating assembly, and the self-lubricating assembly comprises a lubricating part and a control part connected with the rotating shaft; the lubricating part comprises an annular fixing plate, an annular extrusion air bag connected with the inner surface of the annular fixing plate, an annular expansion air bag connected with the outer surface of the annular fixing plate and a lubricating column penetrating through the planet carrier. When the rotating shaft drives the planetary gear to start to work, the control part drives the push plate to move to extrude the annular extrusion air bag, so that air is pressed into the annular expansion air bag and expands, lubricating oil flows out of the oil discharge hole to the meshing part of the planetary gear and the eccentric sun gear, and comprehensive lubrication is achieved. The whole lubricating process is automatically started along with rotation of the rotating shaft, manual inspection or manual lubrication is not needed, it is guaranteed that all parts are fully lubricated, and use is extremely convenient.

The invention discloses an efficient continuous variable geometric compression ratio device suitable for engines of various structure types, and relates to the technical field of engines. Comprising a machine body, a piston, a connecting rod, a crankshaft and an eccentric shaft sleeve, a large-head hole of the connecting rod is rotatably connected with an outer circle of the eccentric shaft sleeve, a crankshaft journal of the crankshaft is rotatably connected with an inner hole of the eccentric shaft sleeve, and at least one end of the eccentric shaft sleeve is fixedly connected with a driven gear. The driven gear is in transmission connection with a driving gear, and a regulation and control unit is arranged between the driving gear and the crankshaft. When the compression ratio of the engine needs to be adjusted, the control unit controls the driving gear to rotate to a target phase relative to the crankshaft; when the compression ratio of the engine does not need to be adjusted, the adjusting and controlling unit controls the driving gear and the crankshaft to rotate synchronously. The problems that an existing VCR device is narrow in application range and the like are solved, the mechanical loss in the operation process of an engine is greatly reduced, and the efficiency of the engine is greatly improved.