269results about How to "Realize stepless speed change" patented technology

The invention discloses a twin-motor two-planet-row and single clutch driving device of a hybrid vehicle in the technical field of machinery. The device is provided with a front planet row and a back planet row; the front planet row is provided with a front planet row planet wheel and a front planet row sun gear; the back planet row is provided with a back planet row planet wheel and a back planet row sun gear; the front planet row and the back planet row share a gear ring. The output shaft of an engine is connected with the input end of an integrated starter generator; the output end of the integrated starter generator is connected with the driving disk of the clutch; the driven disk of the clutch is connected with the planet wheel of the front planet row through a planet carrier; the sun gear of the front planet row is connected with a drive motor; the planet carrier of the planet wheel of the back planet row is arranged fixedly on a car frame; the sun gear of the back planet row is also connected with the drive motor; the outside gear of the gear ring is normally engaged with a power take-off gear. The twin-motor two-planet-row and single clutch driving device of the hybrid vehicle has the advantages of compact structure, large transmission ratio, large load support capability, stable driving, and high transmission efficiency, thereby realizing power dividing and infinite variable speed at the same time.

The invention relates to a hybrid electric vehicle series-parallel type double-planetary-gear-train dynamic coupling device and method. The dynamic coupling device comprises an engine, a first planetary gear train, a second planetary gear train, a first motor and a second motor. The first planetary gear train is composed of a first sun gear, a first planetary gear carrier, a first gear ring and a planetary gear of the first gear ring. The second planetary gear train is composed of a second sun gear, a second planetary gear carrier, a second gear ring and a planetary gear of the second gear ring. The first motor is connected with the first sun wheel. The second motor is connected with the second sun wheel. The engine is connected with the first gear ring through a clutch. The first gear ring is provided with a brake. The first planetary gear carrier and the second gear ring are fixedly connected together to serve as the power output end. The second gear ring is connected with an outer transmission mechanism through a power output gear. The second planetary gear carrier is fixed to a frame. The dynamic coupling device is simple in structure, easy and convenient to control, and capable of switching various dynamic coupling actions and modes, improving the oil consumption characteristic and the power performance and achieving stepless speed change, and a transmission does not need to be additionally arranged.

The invention discloses a duel-clutch stepless speed change series parallel hybrid power system in the technical field of automobiles, which comprises an engine, a first clutch, a first motor, a second clutch, a second motor, a speed reduction differential gear, a driving axle, a wheel, an energy storing device, a motor control device, an attachment drive transmission gear and a starting motor, wherein a crank shaft output end of the engine is connected with a rotor of the first motor through the first clutch; the rotor of the first motor is also connected with a rotor of the second motor through the second clutch; the rotor of the second motor is connected with the wheel through the speed reduction differential gear and the driving axle; the energy storing device is electrically connected with the motor control device; the attachment drive transmission gear is connected to the rotor of the first motor to provide hybrid drive for attachments for air-conditioning, braking, steering and the like; and the starting motor is connected with the crank shaft output end of the engine through an input end driving disc of the first clutch. The duel-clutch stepless speed change series parallel hybrid power system has the characteristics of entire car stepless speed change series parallel drive, attachment system hybrid drive, low system cost, low development cost, low maintenance cost and the like.

The invention discloses a two-planet-row electromechanical coupling driving device of a hybrid vehicle in the technical field of machinery. The device is provided with a front planet row and a back planet row; each of the two planet rows is provided with a planet wheel, a sun gear and a row gear ring; the two planet row gear rings are connected with each other by a clutch. An engine is connected with the planet wheel of the front planet row; an ISG motor is connected with the sun gear of the front planet row; the gear ring of the front planet row is connected with the driving disk of the clutch; the driven disk of the clutch is connected with the gear ring of the back planet row; the planet carrier of the planet wheel of the back planet row is arranged fixedly on a car frame; the sun gear of the back planet row is connected with a drive motor; the outside gear of the gear ring of the back planet row is normally engaged with a power take-off gear. The two-planet-row electromechanical coupling driving device of the hybrid vehicle has the advantages of compact structure, large transmission ratio, large load support capability, stable driving, and high transmission efficiency, thereby realizing power dividing and infinite variable speed at the same time.

The invention discloses an electronic stepless variable speed parallel type hybrid power driving device which comprises a counter-rotating double-rotor motor, a motor controller, a planetary mechanism, an accumulator set, a control unit ECU and a dead axle gear pair, wherein an input shaft of an engine is respectively connected with a sun wheel of the planetary mechanism and a gear ring by a power transmission mechanism formed by the counter-rotating double-rotor motor and the dead axle gear pair; at least one brake is connected with the sun wheel of the planetary mechanism and the gear ring; and the accumulator set is respectively electrically connected with the motor controller and the control unit ECU, and the motor controller is electrically connected with the counter-rotating double-rotor motor. The device has the advantages of compact structure, few power transmission parts and low transmission loss; the action of the brake determines different working modes, different modes have different speed ratios and torque output, the vehicle can select different modes to work according to actual power requirements, and the speed ratio range is greatly enlarged, therefore, the system can be suitable for various vehicle types with different requirements for speed ratio.

The invention provides an apparatus for testing the fatigue life of a high-speed angular contact ball bearing. The apparatus tests the fatigue life of the angular contact ball bearing under the working condition of various rotary speeds and loads by adoption of a frequency converter to realize infinite variable speed of a high-frequency motor, adoption of a transmission shaft to drive the angular contact ball bearing to rotate at a high speed under certain pretightening force, and adoption of a weight to adjust and load the axial pretightening force. The apparatus overcomes the defects of complex structure, expensive price, trivial operation, large noise and so on of the prior apparatus for testing the fatigue life of the angular contact ball bearing, realizes zero transmission and lever loading, and has the advantages of superior high-speed performance, reliable test results, simple structure and low cost.

The invention relates to a multifunctional electromagnetic stepless torque conversion device, belonging to the field of a speed changer. The device adopts a motor which consists of an inner rotor, an outer rotor, a motor winding, a slip ring, a carbon brush and a carbon brush holder, wherein, the inner rotor, the outer rotor and the motor winding can freely rotate, the slip ring is connected with a winding terminal, and the carbon brush and a carbon brush holder are connected with the slip ring in a sliding way; when in the process of power transmission, any of the two rotors is taken as a power input end, and other one is taken as a power output end; due to the special use, the functions of stepless speed change, clutch, battery cell charge and energy recovery can be realized when the motor is in a power generation mode, and the functions of starting an engine and pure electric driving and combination driving can be realized when the motor is in a power-driven mode; therefore, when being matched with the engine and a gear for use, the stepless torque conversion device can replace a electric generator, a starting engine, the clutch and a flywheel, so as to have positive effects of small volume, low cost, high transmission efficiency, energy conservation, environmental protection, simple structure and convenient operation.

The invention discloses a four-die stepless speed change series-parallel hybrid power driving system, belonging to the technical field of automobile hybrid driving. The system comprises an engine, a clutch, two motors, corresponding transmission chains of the two motors, a power transfer switching device, a planetary gear differential device, a deceleration differential device, an energy storage device and a motor control device. The system provided by the invention has the characteristics of better technical inheritance with existing vehicles, overall dynamic property, fuel economy and low emission, and has functions of four-die driving, stepless speed change and series-parallel system; the problems of insufficient driving power, lack in ramp starting ability, large system volume and high cost of the existing similar technologies and the problems that the stepless speed regulation of the engine cannot be realized and the batch industrialization is difficult as the electromechanical components are difficult to manufacture are solved, and organic combination of high performance, low development cost, low system cost and easy implementation of scale industrialization is realized.

The present invention is one kind of excavator and one kind of sand dredging boat, and relates to underwater sand excavation. The excavator is one sand dredging balance wheel with oscillating hydraulic cylinder to drive one balance wheel and the sand dredging board on the balance wheel to rotate reciprocally and periodically for cutting sand. The sand dredging boat includes one mechanical and hydraulic driving system and one conveying chain belt on the boat, and one sand dredging balance wheel in water. The present invention is superior to available chain-bucket sand dredging boat, and has separated excavating assembly and conveying assembly, hydraulic driving, 5-10 times raised production efficiency and easy control.

The invention discloses an active drive device for a hybrid electric vehicle capable of independently controlling power output of a left wheel and a right wheel, and the active drive device comprises an engine, a generator, two epicyclic gear trains, a left drive motor and a right drive motor; a first epicyclic gear train is used for realizing the power coupling of the engine, the generator and an input component of a second epicyclic gear train; the second epicyclic gear train is used for realizing the power coupling of the left/right drive motor and an output component of the first epicyclic gear train; the output component of the first epicyclic gear train and the input component of the second epicyclic gear train are connected with each other through a spur gear pair or a bevel gear pair in a driving way; and the left/right drive motor is respectively connected with a left wheel side drive shaft and a right wheel side drive shaft in a driving way. The active drive device has the advantages of compactness in structure, multiple running modes, stepless speed changing of the engine and capability of independently controlling the power output of the left and the right wheels.

The invention discloses a liquid piton heat engine which comprises a cold air hydraulic cylinder, a hot air hydraulic cylinder, a cold hydraulic power mechanism, a hot hydraulic power mechanism, a cold liquid medium return system and a hot liquid medium return system, wherein the cold air hydraulic cylinder is communicated with the hot air hydraulic cylinder through an air medium communicating pipeline, a cooler is arranged on the cold air hydraulic cylinder, a heater is arranged on the hot air hydraulic cylinder, a cold liquid medium outlet of the cold air hydraulic cylinder is communicated with a cold liquid medium return hole through the cold hydraulic power mechanism and the cold liquid medium return system, a hot liquid medium of the hot air hydraulic cylinder is communicated with a hot liquid medium return hole through the hot hydraulic power mechanism and the hot liquid medium return system, and the cold hydraulic power mechanism, the cold liquid medium return system, the hot hydraulic power mechanism and the hot liquid medium return system are controlled by a progress control mechanism. According to the invention, a piston crank connecting rod mechanism of an engine is omitted, and a large-power thermomotor with high efficiency and small volume and light weight can be manufactured.

The invention discloses a slipping type all-hydraulic turner, comprising a turner body, wherein the turner body is provided with a drive assembly; a turning mechanism is further arranged at the lower part of the turner body; the turning mechanism comprises a turning cylinder; the drive assembly comprises a hydraulic motor for driving the turning cylinder to rotate; and the turning cylinder is provided with a regulating component which is used for connecting the turning cylinder and the turner body and simultaneously regulating the height of the turning cylinder relative to the turner body. The slipping type all-hydraulic turner is powered by hydraulic pressures, members, such as a clutch and a gear box are cancelled, stepless speed changing is realized, the fault rate is greatly reduced, and the technical problems that the traditional turner has big turning radius, large size, high fault rate, low turning efficiency, poor turning effect and the like are solved.

The invention provides a spherical robot. The spherical robot comprises a head assembly and a spherical body which can rotate relative to the head assembly. The spherical body comprises a ball shell, a connecting part arranged in the central region of the ball shell, and a walking driving mechanism connected between the ball shell and the connecting part. The walking driving mechanism comprises a driving arm which can swing around the connecting part, and a driving wheel which is in contact with the ball shell is arranged at one end of the driving arm; the ball shell is driven to walk through friction force between the driving wheel and the ball shell; the walking speed of the ball shell is changed by changing the swinging position of the driving arm relative to the connecting part; the side, away from the walking driving mechanism, of the connecting part is provided with a head driving assembly, and the head driving assembly drives the head assembly to move on the outer surface of the ball shell.

The invention discloses an inspection and evaluation system for the track geometric irregularity, relates to an inspection and evaluation system, and solves the problems that the inspection efficiency is low and inspection results are inaccurate due to manual influence as a track inspection car is required to be pushed by manpower for inspection in the field of track traffic. A comprehensive inspection vehicle has the problems that the construction cost is expensive, and lines are required to be closed frequently to influence the normal traffic operation; in addition, the inspection result variation caused by looseness of an inspection beam of the track inspection car or the comprehensive inspection vehicle is not easy to find out frequently, and as a result, the problem of inspection result distortion is caused. The inspection and evaluation system comprises a locomotive independently running on a track, as well as an excitation system, a control system, signal acquisition systems, a navigation system, a signal processing system and an energy supply system all placed inside the locomotive. According to the invention, the static irregularity can be obtained without manual measurement, so that plenty of manpower and material resources are saved, and the inspection efficiency and inspection precision are effectively improved. The inspection and evaluation system is used for inspection of the track geometric irregularity.

The invention relates to the technical field of gas turbines, and provides an air inlet structure for a fuel nozzle of a gas turbine. The fuel nozzle comprises a center air channel and a fuel cavity which are communicated with each other, and the center air channel is used for connecting the air into the fuel cavity. A nozzle hanging flange is arranged at one end of the center air channel, and the nozzle hanging flange is provided with air inlet channels used for connecting the air into the center air channel. The nozzle hanging flange is movably sleeved with an adjusting sleeve, and the adjusting sleeve is used for limiting the sizes of openings of the air inlet channels through axial movement. By axially adjusting the adjusting sleeve, the flow of the air entering the center air channel can be adjusted, hence, it is guaranteed that fuel and air have a good pre-mixing effect, tempering can be prevented from happening to a nozzle outlet, and the reliability of the nozzle is improved; in addition, stepless speed change of the gas turbine can be achieved through the adjusting sleeve.

A vehicle power matching system with a hydraulic mechanical continuously-variable transmission can automatically adjust the transmission ratio of the transmission according to driving intentions of drivers and changes of an external load so that a driving system can provide enough power when in a transient state; during the transient state, an engine works at an optimal economical curve, and accordingly the system performance can be optimal. The vehicle power matching system has the advantages that the engine always works under the working conditions of optimal power performance and optimal economy; infinitely variable speeds are achieved rapidly and stably under the conditions of the driving intentions of the drivers and the changes of the external load; during the process, vibration noise is small, the overshoot is small, and offset is eliminated as far as possible; and the vehicle power matching system can meet the transient state power performance requirements and steady state economy requirements when a vehicle runs.

The invention relates to an inclined end surface milling and center hole drilling machine tool, and belongs to the field of numerical control machine tool equipment. The machine tool comprises a machine body, a fixture body, power heads, end numerical control slide tables and a middle numerical control slide table; two end numerical control slide tables are provided, and are symmetrically arranged on two sides of the middle numerical control slide table left and right; the upper surfaces of the end numerical control slide tables and the middle numerical control slide table are aslant arranged; one ends are high, and the other ends are low; the end numerical control slide tables and the middle numerical control slide table are respectively fixed above the machine body; the power heads are symmetrically mounted on the end numerical control slide tables left and right for transverse feeding adjustment; the fixture body is mounted on the middle numerical control slide table for longitudinal feeding adjustment; and each power head is provided with two main shafts respectively used for mounting milling tools and drill bits. The machine tool adopts the inclined numerical control slide tables to achieve better stability, improves the precision, is convenient to remove chips, finishes end surface milling and center hole drilling of shafts through once clamping, and can synchronously machine two surfaces to achieve high working efficiency.