2092 results about "Transaxle" patented technology

A multi-mode electric transaxle for a work vehicle includes a transaxle housing and wheel end units coupled to the transaxle housing and have hubs rotatable about a wheel axis. An electric machine and a transmission are supported within the transaxle housing. The transmission receives rotational power from the electric machine and is configured to effect multiple gear ratios at a range gear. A drive gear is mounted within the transaxle housing to rotate about the wheel axis and has multiple gear mesh locations, including a first gear mesh location at an outer circumference of the drive gear where the range gear engages the drive gear and a second gear mesh location at an annular face of the drive gear. An output shaft has an inner end mounting an output gear within the transaxle housing to engage the drive gear at the second gear mesh location. The output shaft extends outside the transaxle housing. A transaxle gear assembly couples the drive gear to rotatable the hubs of the wheel end units.

A work vehicle has a chassis supported off the ground by ground-engaging wheels or tracks and two transaxles carried by the chassis. The first transaxle has first wheel end units rotatable about a first wheel axis via a first transaxle gear set to rotate a first set of the ground-engaging wheels or tracks. The second transaxle has second wheel end units rotatable about a second wheel axis via a second transaxle gear set to rotate a second set of the ground-engaging wheels or tracks. The second transaxle includes an electric machine having a shaft rotating about a machine axis, a transmission rotated by the electric machine shaft and configured to effect multiple gear ratios at a range gear, and a drive gear rotatable about the second wheel axis by the range gear of the transmission. A transfer shaft has a first end coupled to an input arrangement that engages the first transaxle gear set and has a second end coupled to an output gear that engages the drive gear to transfer power from the second transaxle to the first transaxle via the transfer shaft.

The invention discloses a trailer device based on a new energy electric drive technology and a control method of the trailer device. The trailer device comprises a trailer, an electric drive axle, a power battery box, a battery control system, a trailer controller, an external charger and a data acquisition module. The electric drive axle is a drive axle assembly integrating an auxiliary drive system, a motor controller, a motor, a heat dissipation system, a speed reduction device and a drive device, is installed at the axle installation position of the trailer and is used for replacing an original axle of the trailer. The system meets the requirements of various working conditions, can be flexibly combined with a stock tractor, realizes the functions of a hybrid vehicle, and realizes the purposes of reducing the energy consumption of the vehicle, reducing the serious emission of air pollutants and improving the driving safety performance at low cost.

The utility model provides a longitudinal front-drive hybrid drive system and a vehicle. The drive system comprises a transmission, a first electric drive system, a second electric drive system, an internal combustion engine drive system and a drive axle, and the transmission comprises an input shaft, a first output shaft and a clutch device; the first electric driving system comprises a first motor and a first transmission shaft, the first motor is connected with the first transmission shaft, and the first transmission shaft is in transmission connection with the input shaft; the second electric driving system comprises a second motor and a second transmission shaft, the second motor is arranged on one end side of the input shaft and connected with the second transmission shaft, and the second transmission shaft is in transmission connection with the first output shaft; the internal combustion engine driving system comprises a longitudinal internal combustion engine which is located on the other end side, opposite to the second motor, of the input shaft, and a rotating shaft of the internal combustion engine is in transmission connection with the input shaft. The input end of the drive axle is in transmission connection with the first output shaft. According to the utility model, the power transmission link of the hybrid power driving system can be shortened, and the driving efficiency of the hybrid electric vehicle is improved.

The invention relates to a single-double-axle switching control method and system for double drive axles with different powers. The method comprises the steps that a double-axle drive mode is initialized after starting; vehicle operation parameters and driver operation intention are obtained, and the driving mode is re-evaluated; determining a current road condition and / or a vehicle load according to the vehicle operation parameters, judging whether to switch to a single-axle driving mode or not at least based on the current road condition or the vehicle load, and determining a main driving axle in the single-axle driving mode; determining an accelerator pedal opening degree and / or a braking energy recovery gear according to the operation intention of the driver, and triggering to switch to a double-axle driving mode when the accelerator pedal opening degree and / or the braking energy recovery gear exceed respective preset thresholds; based on the driving mode needing to be switched, target driving torque and a torque adjusting strategy needed by the driving axle are determined; and in the switching process of the driving modes, the driving torque is dynamically adjusted based on the torque adjustment strategy, so that the driving torque is gradually converged to the target driving torque.

A work vehicle has two transaxles carried by a chassis each having wheel end units rotatable to drive ground-engaging members about wheel axes and having electric machines powering transmission configured to effect multiple gear ratios. The electric transaxles are operationally mechanically uncoupled. One or more sensors detect speed, heading, and loading characteristics of the work vehicle. A controller, having memory and processing architecture, is configured to process control to: receive from the one or more sensors input of the speed, heading, and loading characteristics of the work vehicle. The controller determines a shift pair sequence for shifting the first transmission and the second transmission based on the received input of the speed, heading, and loading characteristics of the work vehicle. The shift pair sequence defines a shift time (tS1) for shifting the first transmission and a shift time (tS2) for shifting the second transmission in which the shift time tS1 is the same or different than the shift time tS2. The controller generates a first shift command to shift the first transmission at the shift time tS1 while the second electric transaxle drives the work vehicle and generate a second shift command to shift the second transmission at the shift time tS2 while the first electric transaxle drives the work vehicle.

An off-highway recreational includes a frame, a prime mover, a transmission, an intermediate shaft and a main shaft. The transmission is mechanically coupled to receive power from the prime mover and to provide mechanical power at a transaxle output shaft. The intermediate drive shaft is mechanically coupled to the transaxle output shaft, wherein the intermediate drive shaft has a first diameter. The main drive shaft is mechanically coupled to the intermediate drive shaft, wherein the main drive shaft has a second diameter that is greater than the first diameter.

The invention discloses a strict safety trajectory optimization control method and system for an under-actuated bridge crane. The method comprises the following steps: constructing a variable rope length kinetic equation model of the bridge crane; setting an end point constraint, a speed constraint and an acceleration constraint for a given initial trolley and rope length expected running track; respectively optimizing a trolley reference speed and a rope length reference speed based on the end point constraint, the speed constraint and the acceleration constraint; performing angle constraint by using a first control obstacle function, and setting an upper bound and a lower bound of a swing angle state variable; performing obstacle avoidance constraint by using a second control obstacle function; obtaining a cost function according to the first control barrier function and the second control barrier function; and solving the QP problem to obtain the corrected control input mu meeting the angle constraint and the obstacle avoidance constraint. According to the strict safe trajectory optimization control method and system for the under-actuated bridge crane, the moving trajectory is optimized, meanwhile, obstacles can be effectively avoided, and swing of the load is reduced.

The retractable tonneau cover for truck bed vehicles and similar, object of the present invention, comprises a mechanism box (100) provided with a winding stress shaft (10), and in the electric model, a drive axle (20) driven by an electric motor that enable the movement of opening and closing a retractable tonneau cover mat. The mechanism box is provided with an embodiment that improves the drainage system in order to prevent the accumulation of water inside it. In addition to the electrical model, the box (100) has a relief on its face that receives the control module with access from the outer portion, which improves accessibility and avoids the need to open the entire set, in case it needs maintenance, further having a management and activation system via Bluetooth and radio frequency.

The present disclosures relate to methods and systems for a hybrid powertrain. The hybrid powertrain system includes an integrated axle configured to provide mechanical power to a first pair of wheels, the integrated axle comprising a first motor-generator and a first drive axle such that the first motor-generator and at least a portion of the first drive axle are mechanically coupled to a common housing. The system also includes a second motor-generator configured to be mechanically coupled with an engine via a first clutch and mechanically coupled with a second drive axle via a second clutch, the second drive axle mechanically coupled with a second pair of wheels. A controller is electrically coupled with the first and second motor-generators, the engine, and the first and second clutches, the controller configured to enable a fully electric mode, a series hybrid mode, a parallel hybrid mode, and a regenerative mode of operation.

A fixed time anti-interference sliding mode tracking control method for an under-actuated bridge crane comprises the following steps: firstly, designing a disturbance observer which can converge in fixed time and is used for accurately estimating disturbance in a system so as to provide effective disturbance compensation information for a subsequent control strategy; secondly, in combination with the fixed time disturbance observer, a sliding mode controller is provided to ensure that the crane can accurately track a given trajectory and enable a tracking error to converge to a sliding mode surface within a fixed time. According to the invention, accurate positioning of the trolley can be realized, and load swing can be effectively inhibited in a complex environment. According to the method, the control precision and robustness of the under-actuated bridge crane in a disturbed environment can be remarkably improved, and an effective solution is provided for crane control under complex working conditions.

The invention discloses a bridge end fault processing method and device, equipment and a medium, and relates to the field of drive axles, and the method comprises the steps: obtaining fault levels corresponding to gearboxes and motors in all drive axles; judging whether a target fault level greater than or equal to a preset fault level exists in only one drive axle or not; if the two drive axles both have the target fault levels, the fault levels are uploaded to a whole vehicle fault processing module; if only one drive axle has the target fault level, judging whether a fault corresponding to the target fault level is a driving forbidding fault or not; if the fault corresponding to the target fault level is a driving forbidding fault, the fault level is uploaded to a whole vehicle fault processing module; and if the fault corresponding to the target fault level is not the driving forbidding fault, the fault level corresponding to the target fault is reduced by one level and then uploaded to a whole vehicle fault processing module, and the target drive axle with the target fault level is isolated. Therefore, the power of the vehicle can still be maintained when a single axle has a serious fault.

The invention relates to the technical field of suspension systems of vehicles, in particular to an air suspension system of a vehicle. The air suspension system comprises a guide arm assembly, the guide arm assembly is provided with an upper plate and a lower plate which are arranged in a stacked mode, and the upper plate is shorter than the lower plate and extends to the middle of the lower plate from one end of the lower plate; the air spring is arranged at the other end of the lower plate; wherein the two guide arm assemblies are symmetrically arranged at the two ends of the drive axle, a cross beam parallel to the drive axle is installed at the other end of the lower plate, and the air spring is fixed to the cross beam. According to the invention, one end of the guide arm assembly is composed of the upper plate and the lower plate, so that the guide arm assembly has the reliability of a plate spring suspension; the cross beam is arranged to connect the other ends of the two guide arm assemblies and fix the air spring on the cross beam, so that the air suspension system has the characteristic of variable rigidity, the weight of the air suspension system is reduced, the size of the air suspension system is reduced, and the air suspension system can be suitable for more types of vehicles.

A method for operating a drive axle, a control unit for carrying out the method, a drive axle, and a motor vehicle. In the method, a driving state variable is detected which characterizes the current driving situation. A coupling probability value K is ascertained on the basis of the driving state variable, and if the coupling probability value K is greater than a threshold G, the rotational speed of the transmission output element is adapted to a wheel driveshaft rotational speed via an electric traction machine. The process of adapting the rotational speed is carried out in a predictive manner, i.e. regardless of whether a coupling process is subsequently initiated in which the transmission output element and the wheel driveshaft are rotationally fixed to each other.

To provide a transaxle which can achieve reduction of vibration and noise and effectively protect an electric power device while achieving reduction of the number of components and downsizing.SOLUTION: A transaxle of the disclosure has an electric motor, a gear mechanism connected to the electric motor and an engine, and a case which houses the electric motor and the gear mechanism and is mounted on a vehicle. A case of the transaxle includes: a first case which has a height lower than that of the engine, is fixed to the engine, and houses the gear mechanism; a second case which has a height lower than that of the engine and higher than that of the first case and houses the electric motor and an electric power device for driving the electric motor; and a stiffener which is fixed at one end to the first case and fixed at the other end to a portion of the second case which protrudes farther than the first case in a height direction.SELECTED DRAWING: Figure 2

An electrically driven axle assembly is disclosed. In various embodiments, the electrically driven axle assembly includes a main housing; a differential plate configured for mounting within the main housing; a differential assembly, the differential assembly disposed adjacent the differential plate and having a bearing configured for mounting within a plate orifice that extends within the differential plate; a first drive shaft having a first inboard end connected to the differential assembly and a first outboard end configured to receive a first wheel; a first electric machine configured to drive the differential assembly; and a first gear assembly configured to operably couple the first electric machine to the differential assembly.

The invention relates to the technical field of dynamic balance testing, and discloses a steering drive axle torque detection testing device which comprises a base, a first motor is fixedly connected to the outer wall of the base, a supporting table is fixedly connected to the surface of the base, a hydraulic cylinder is fixedly connected to the top of the supporting table, and a second motor is fixedly connected to the inner wall of the supporting table. The output end of the second motor is fixedly connected with a detection block, a limiting mechanism is arranged in the supporting table, a positioning groove is formed in the inner wall of the supporting table, a bridge body is placed in the positioning groove, and the detection block is connected with the detection end of the bridge body in a sleeved mode. The drive axle is limited through the anti-deviation mechanism, the drive axle is prevented from deviating due to vibration in the dynamic torque test process, the torque test result is prevented from being affected, the stability of measured data in the torque test process is improved, and the test data can more accurately reflect the real torque performance condition of the drive axle.

The utility model provides a steering system of a vehicle. The steering system comprises a steering control device, a steering driving device and a steering execution device. The steering driving device comprises a power output module, a power driving module, a first driving circuit and a second driving circuit, the power output module is connected to the steering execution device and used for driving the steering execution device, the first driving circuit is used for being connected with a first power source of the vehicle, and the second driving circuit is used for being connected with a second power source of the vehicle. The power driving module is used for controlling the first driving circuit or the second driving circuit to be connected to the power output module; the first driving circuit comprises two first driving bridge circuits which are connected in parallel and / or the second driving circuit comprises two second driving bridge circuits which are connected in parallel; the steering control device is connected to the power output module and used for controlling the power output module to operate. According to the steering system of the vehicle, the driving safety of the vehicle can be effectively improved.

A drive axle for a motor vehicle includes two vehicle wheels, a first shaft by which a first of the vehicle wheels can be driven and a second shaft by which the second vehicle wheel can be driven. The drive axle also includes a first electric motor having a first stator and a first rotor, a differential gear by which the shafts can be driven and, via the shafts, the vehicle wheels can be driven by the first rotor of the first electric motor, and a second electric motor having a second stator and a second rotor. Only one of the shafts is assigned a clutch, by means of which the one shaft can be connected to the second rotor in a torque-transmitting manner, bypassing the other shaft and the differential gear.

The embodiment of the invention provides a parameter test method and device for a hybrid power system, and the method comprises the steps: obtaining test parameters of a to-be-tested vehicle when the to-be-tested vehicle is in different working modes, determining an efficiency parameter corresponding to the to-be-tested vehicle according to the test parameters, and determining the efficiency parameter of the to-be-tested vehicle according to the efficiency parameter. The efficiency parameters at least comprise the comprehensive efficiency of the hybrid power system, the efficiency of a real vehicle motor body, the efficiency of a real vehicle generator body and the transmission efficiency of the hybrid power transmission, and the efficiency test method and device can carry out efficiency test on the dual-motor hybrid power system, test key efficiency parameters such as the comprehensive efficiency of the hybrid power system, the efficiency of the real vehicle motor body and the transmission efficiency of the hybrid power transmission. The test can be completed through one-time test, the test speed is high, and data results are accurate; the rack equipment is simple in arrangement form, convenient to switch, convenient to operate and use and high in equipment universality, and other types of products such as transmissions, speed reducers and drive axles can be tested.

The invention discloses a double-motor hydraulic mechanical stepless speed change transmission system and method, and relates to the technical field of stepless speed change transmission. The output end of an input shaft module is connected with the input end of a power output shaft module and the input end of a hydraulic pump shaft module, and a motor shaft driven gear is meshed with the output end of the input shaft module; the motor shaft driven gear is coaxially connected with the two hydraulic motors, the output end of the hydraulic pump shaft module is connected with the two hydraulic motors, the two hydraulic motors are connected with the input end of the motor shaft sun gear, and the motor shaft sun gear is meshed with the forward planet assembly and the backward planet assembly. The motor shaft driving gear is connected with the forward planet assembly and the backward planet assembly, the forward clutch is connected with the forward planet assembly, the backward clutch is connected with the backward planet assembly, the motor shaft driving gear is further meshed with the output shaft module, and the output end of the output shaft module is used for being connected with a front drive axle and a rear drive axle. The transmission efficiency, the control performance and the working efficiency can be improved.

This invention relates to the field of rear drive axle assembly technology, and more particularly to an assembly fixture for a wire retaining ring for a rear drive axle half-shaft. The fixture includes an assembly sleeve containing a cylindrical wire retaining ring placement groove and a cylindrical clearance groove, the latter communicating with the bottom surface of the placement groove. During assembly, the wire retaining ring is first placed in the placement groove. Then, the assembly fixture with the wire retaining ring is aligned with the half-shaft end face. Next, the second end of the assembly sleeve is pressed or struck, causing the wire retaining ring and the assembly sleeve to expand outwards by the half-shaft. Finally, after the wire retaining ring moves into the half-shaft groove, it retracts and returns to its original position. Using this assembly fixture, the wire retaining ring only needs to expand to the outer diameter of the half-shaft to complete the assembly, effectively reducing the possibility of the wire retaining ring failing to retract and return to its original position, thus improving the assembly quality stability of the wire retaining ring.

The invention relates to the technical field of engineering machinery transmission parts, in particular to an engineering machinery drive axle main transmission assembly which comprises a differential shell, a driving spiral bevel gear and a large spiral bevel gear, the driving spiral bevel gear and the large spiral bevel gear are meshed with each other, the large spiral bevel gear is connected with the differential shell, and force is transmitted to the large spiral bevel gear through the driving spiral bevel gear. The large spiral bevel gear changes the transmission direction of force and drives wheels to operate, the driving spiral bevel gear is provided with a main spiral bearing and an oil seal, the main spiral bearing and the oil seal are assembled on the main transmission shell, the main transmission shell is provided with an oil groove set for lubricating the main spiral bearing and the oil seal, a flexible spacer bush is arranged between inner rings of the main spiral bearing, and the flexible spacer bush is connected with the main spiral bevel gear. A differential assembly with a locking function is arranged in the differential shell. According to the scheme, the whole machine trafficability under complex road conditions can be improved, the manufacturability in the assembly process is optimized, and the assembly cost and the part cost are reduced.

The utility model belongs to the technical field of drive axle assembly, and particularly relates to horizontal C-shaped press-fitting equipment and a press-fitting system for a forklift drive axle. The press-fitting device comprises two press-fitting mechanisms symmetrically arranged on the two sides of a line body rail and a connecting rod used for fixedly connecting the two press-fitting mechanisms. The press-fitting mechanism comprises a rack, an L-shaped press-fitting support installed on the rack in a sliding mode through a horizontal moving sliding table, a gas-liquid pressure cylinder with the fixed end fixedly installed on the L-shaped press-fitting support and a pressure head assembly installed on the L-shaped press-fitting support in a sliding mode through a first sliding assembly. At the initial position, the distances between the corresponding L-shaped press-fitting supports on the two sides of the line body rail and the corresponding drive axle press-fitting positions to be press-fitted in the X-axis direction are different. The two press-fitting mechanisms symmetrically arranged on the machine frame are adopted to form a horizontal C-shaped structure, press-fitting force only acts on the axes, where half-shaft oil seals and oil seal check rings are installed, of the two ends of the drive axle, other parts are not stressed, the service life of press-fitting equipment is guaranteed, and high operation efficiency is achieved.

The utility model discloses an underground hydraulic auxiliary drive bridge plug seat sealing device which comprises a booster cavity located in a device body, and the booster cavity is connected with an underground hydraulic environment through a liquid inlet. A piston structure is arranged in the pressurizing cavity in an axial sliding mode and used for opening and closing the liquid inlet. One end of the piston structure is connected with a driving device for driving the piston structure to linearly move, and the other end of the piston structure is connected with a setting pull rod for pulling a setting execution mechanism in the bridge plug structure. High setting force is provided by replacing gunpowder combustion with underground hydraulic boosting, so that the size of the device is reduced.

The present disclosure relates to systems and methods of dynamically modulating use of various motor control strategies (MCSs) to optimize powertrain efficiency. One or a combination of MCSs are strategically and dynamically implemented to regulate torque to drive axle motors of a drive axle based on vehicle operating conditions. In normal acceleration conditions, Field-Oriented Control (FOC) may be used to regulate torque applied to a first drive axle motor and Direct Torque Control (DTC) may be used to regulate torque applied to a second drive axle motor of the drive axle, where the first drive axle motor may operate at peak efficiency and the second drive axle motor may make up for fluctuating torque demand. In cruising speed conditions, FOC may be used to regulate torque applied to both the first and second drive axle motors to operate with high steady-state efficiency at cruising speeds.

The utility model provides a wet type fallen leaf sweeping vehicle which comprises a main vehicle frame, a differential drive axle is fixed on the bottom side of the main vehicle frame, a drive motor drives wheels to walk through the differential drive axle, a water tank is fixed above the main vehicle frame, a fan is fixed below the water tank, the front portion of the water tank is designed to be a seat, and a battery is fixed below the seat. The upper portion of the water tank is designed into a tool box and an electric appliance box space, the water pump is installed in the electric appliance box, an air outlet pipe is fixedly connected to the outer side of the exhaust end at the front end of the fan, and an atomizing nozzle is fixed in the air outlet pipe. According to the electric wheel type sweeping vehicle, the electric wheel type integral structure is adopted, the physical limitation of manual carrying is avoided, the battery capacity is expanded, the endurance is prolonged, meanwhile, water with a proper capacity can be loaded, the wet type sweeping operation is improved through the effect that fine water mist is generated and mixed with air mist, and raised dust is reduced; and a good tool for riding instead of walk is provided for long-distance operation of operators, so that the physical strength is saved, and the working efficiency is also improved.

The utility model provides a harvester chassis device which comprises a harvester frame, a steering drive axle, a speed-changing gear box, a bracket, an engine shell and a main drive axle, the bracket is arranged on the steering drive axle and fixedly connected with one side of the engine shell, the other side of the engine shell is connected with the speed-changing gear box, the speed-changing gear box is connected with the main drive axle, and the main drive axle is connected with the steering drive axle. The harvester frame comprises a working frame body and a supporting frame body which are detachably connected, one end of the supporting frame body is connected with the main drive axle, the other end of the supporting frame body is connected with the bracket, the bottom of the working frame body is connected with the top of the supporting frame body, and the working frame body and the supporting frame body are detachably connected through a plurality of locking buckles. According to the chassis device of the harvester, equipment can be conveniently disassembled and assembled through the split body of the frame structure, the harvester is provided with a plurality of power output shafts, the universality and universality of the equipment are improved, and the problems that in the prior art, a chassis device of the harvester and the harvester are high in specificity, narrow in application range, poor in part universality, high in maintenance cost and the like are solved.

The utility model discloses a driving axle transfer AGV (automatic guided vehicle) jacking and positioning device, which belongs to the field of engineering machinery, is simple and compact in structure, small in occupied space, high in adaptability and stable in operation, and can be matched with a U-shaped automatic guided vehicle to realize on-line direct material taking and transfer, improve the working efficiency and reduce the labor cost. The device mainly comprises a supporting frame, a bottom plate of the supporting frame is fixedly installed on a transfer AGV body, a jacking frame is arranged in the supporting frame in a sliding mode and connected with a lifting device, the upper portion of the jacking frame is connected with a two-way adjusting platform, a positioning frame is arranged on the two-way adjusting platform, and a positioning plate clamp is arranged on the positioning frame. The jacking and positioning device is mainly used for jacking and positioning when the drive axle is transferred.

A wet drive axle with built-in parking and service brakes. Two axle housings (2) are respectively mounted on two sides of a motor (1); one end of a motor shaft (11) is connected to a differential (3) rotatably mounted in the axle housing (2), and a parking brake assembly (4) is provided between the other end of the motor shaft (11) and the axle housing (2); the differential (3) separately transmits the power of the motor (1) to sun gear shafts (61) rotatably mounted in the axle housings (2); a service brake assembly (5) for implementing braking is provided between each sun gear shaft (61) and the corresponding axle housing (2); an inner ring gear (69) is fixed in each axle housing (2), a planet carrier (63) is rotatably connected in the axle housing (2), planet gears (62) are mounted on the planet carrier (63), the planet gears (62) are located in the inner ring gear (69) and are engaged with the inner ring gear (69), and one end of each sun gear shaft (61) is inserted among multiple planet gears (62) and is engaged with the multiple planet gears (62). The position arrangement of a brake structure in a drive axle improves the compactness of internal structure arrangement, making the drive axle smaller.