CN106740040B - Auxiliary electric drive hydraulic flat car - Google Patents
Auxiliary electric drive hydraulic flat car Download PDFInfo
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- CN106740040B CN106740040B CN201611102578.3A CN201611102578A CN106740040B CN 106740040 B CN106740040 B CN 106740040B CN 201611102578 A CN201611102578 A CN 201611102578A CN 106740040 B CN106740040 B CN 106740040B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/52—Driving a plurality of drive axles, e.g. four-wheel drive
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention discloses an auxiliary electrically-driven hydraulic flat car, which has the advantages of reducing the power of an engine, reducing the emission of harmful gases, reducing noise pollution and saving energy, and overcomes the defects of the existing flat car which is driven by only hydraulic pressure or only electric. The technical scheme is as follows: the wheel is provided with a reduction gearbox and a direct current motor, and also is provided with a wheel driven by a hydraulic motor, and a special power management system can realize automatic switching of a hydraulic driving mode, an electric driving mode or an electro-hydraulic combined driving mode according to load and gradient, and is driven by the hydraulic system during heavy load, driven by the electric driving system during light load, and driven by the hydraulic motor and the motor together during heavy load climbing.
Description
Technical Field
The invention relates to the field of hybrid power flat car transport vehicles, in particular to a flat car walking driving system.
Background
In the hydraulic transmission process, the hydraulic pump converts the mechanical energy of the engine into hydraulic energy, the hydraulic energy is transmitted to the hydraulic motor through the hydraulic oil way, and the hydraulic motor converts the hydraulic energy into the mechanical energy to drive wheels to rotate. The hydraulic transmission transmits power through high-pressure oil in a pipeline, a gearbox and a transmission shaft are omitted, the hydraulic transmission has a pressure protection function, all hydraulic elements and control devices can be installed separately, the space adaptability is strong, the layout is flexible, and the hydraulic transmission is widely applied to flat cars. When the vehicle is driven by the hydraulic pump, the noise generated during the running of the vehicle is high, oil leakage is caused due to the damage of a hydraulic element, and the probability of environmental pollution is increased. And in order to meet the short-term heavy-load climbing requirement, the installed power is usually larger.
The electric motor is supplied with power from the battery, thereby driving the wheels. When the running time of the vehicle is short, the vehicle can be charged through the charging pile, and waste gas generated by the vehicle is little. And the generator driven by the carried engine is used for charging for a long endurance distance in long-distance running, so that the oil consumption is saved compared with the traditional flat car which is driven by hydraulic pressure only. On the environmental side, the emission of carbon dioxide (CO2) and harmful gases of atmospheric pollutants (NO2) is reduced. In addition, when only the motor is used for driving, the motor can be used in the night work and the places near the residential area where the quietness is required. However, the traditional electric flat car comprises a storage battery, an axle and a reduction box, and the traction force is determined to be smaller due to the installation space and the installed power because the traditional electric flat car is driven by a motor.
The diameter of a conventional drum brake can be increased after being heated, the brake is easy to decline, the reaction is slow, the brake force is not easy to control, the high-frequency action is not easy, and the maintenance is inconvenient. And the disc brake is sensitive in response, easy to control, easy to radiate, stable in speed, stable in wading, high in integration level, low in fault and convenient to maintain.
Disclosure of Invention
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
The invention aims to solve the problems and provides an auxiliary electrically-driven hydraulic flat car which has the advantages of reducing the power of an engine, reducing the emission of harmful gases, reducing noise pollution and saving energy and overcomes the defects of the existing flat car which is driven by only hydraulic pressure or only electric drive.
The technical scheme of the invention is as follows: the invention discloses an auxiliary electric drive hydraulic flat car, which comprises a cab, a first hydraulic drive axle, an electric drive axle, a swing shaft, a storage battery pack, a second hydraulic drive axle, a car frame, a brake axle, a lifting oil cylinder, an electric control box, a steering oil cylinder, an engine, a generator and a hydraulic pump set, wherein the car frame is a bearing platform of the flat car, electric energy generated by the storage battery pack is transmitted to a wheel motor in the electric drive axle, the electric energy is amplified after multi-stage speed reduction and then output torque is output to drive wheels to rotate, the swing shaft is used for supporting the electric drive axle and enabling the electric drive axle to swing for a certain angle range along the axial direction, the brake axle has the functions of driving and parking braking, the lifting oil cylinder enables the car frame to ascend or descend, the steering oil cylinder drives each group of wheels to rotate for a corresponding angle under the requirement of a steering angle of a driver, the engine is used for driving the, the generator is driven to rotate by a flywheel disc of the engine to generate electric energy to charge the storage battery.
According to one embodiment of the auxiliary electrically-driven hydraulic platform lorry, each hydraulic drive axle comprises a reduction gearbox and a hydraulic motor, and oil transmitted from the oil pump transmits torque to the reduction gearbox through the hydraulic motor and finally to the wheels so as to drive the wheels to rotate.
According to an embodiment of the auxiliary electrically-driven hydraulic flat car, the electric drive axle comprises a steel ring, a tire, a first bolt, a second bolt, an axle housing, a third bolt, a wheel motor and a swinging shaft hole, wherein the steel ring is used for fixing the tire and finally driving the vehicle to run, the tire is used for supporting the whole vehicle and driving the vehicle to run, the first bolt and the second bolt are used for connecting the electric drive axle with a flange at the rear end of the wheel motor, the axle housing is used for protecting the wheel motor and providing supporting force for the wheel, the third bolt is used for connecting the steel ring with a flange at the front end of the wheel motor, the wheel motor is a direct current motor, and the swinging shaft hole is installed on the swinging shaft and rotates for a certain angle around the swinging shaft.
According to one embodiment of the auxiliary electric-driven hydraulic flat car, a planetary reduction box is integrated in the wheel motor, and the wheel is driven to rotate after the torque is amplified.
According to one embodiment of the auxiliary electric-driven hydraulic platform truck of the present invention, a compact disc brake is built into the brake bridge.
According to an embodiment of the auxiliary electrically driven hydraulic platform according to the invention, the platform further comprises:
and the electric cabinet is internally provided with a controller for controlling the rotating speed and the discharge capacity of the hydraulic pump and the motor, a controller for controlling the driving motor, a controller for switching hydraulic drive and electric drive, a controller for controlling the charging and discharging of the storage battery pack and communication equipment.
According to one embodiment of the auxiliary electric-driven hydraulic flat car, the hydraulic pump set comprises a closed pump and an open pump, the closed pump provides an oil source for the hydraulic motor and forms a closed system with the motor to realize driving of wheels, and the open pump is responsible for providing the hydraulic oil source for the lifting oil cylinder and the steering oil cylinder.
According to an embodiment of the auxiliary electrically-driven hydraulic flat car, the controller is further provided with a power management system, and the flat car is controlled to enter a parking charging mode, an electric wheel driving mode, a hydraulic motor single driving mode, a hydraulic motor driving mode and an auxiliary electric wheel driving mode according to the driving working condition, the vehicle speed and the power.
Compared with the prior art, the invention has the following beneficial effects: the flat car is provided with a reduction gearbox, wheels driven by a direct current motor and wheels driven by a hydraulic motor, and can realize automatic switching of hydraulic drive, electric drive or electro-hydraulic combined drive modes according to load and gradient through a special power management system, wherein the hydraulic system is used for driving in heavy load, the electric drive is used for driving in light load, and the hydraulic motor and the motor are used for driving together in heavy load climbing. Compared with the prior art, the invention can effectively save energy and improve traction force and climbing capability.
Drawings
Fig. 1A and 1B show a block diagram of an embodiment of the auxiliary electrically-driven hydraulic flatbed of the present invention.
Fig. 2 shows a schematic view of an electric drive axle of the present invention.
FIG. 3 illustrates a control flow diagram of the power management system of the present invention.
Detailed Description
The above features and advantages of the present disclosure will be better understood upon reading the detailed description of embodiments of the disclosure in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale, and components having similar relative characteristics or features may have the same or similar reference numerals.
Fig. 1A and 1B are general views illustrating an auxiliary electrically-driven hydraulic flatbed according to the present invention. In the structure of the auxiliary electric driving hydraulic flat car, a driver cab 1 is a space for a driver to drive the flat car, the driver cab is arranged at the front and the rear of the flat car, and the driver cab is internally provided with a steering wheel, a driving speed pedal, a brake pedal, a touch screen and the like. The hydraulic drive axle 2 comprises a reduction gearbox and a hydraulic motor, and hydraulic energy transmitted from the oil pump is finally transmitted to wheels after passing through the hydraulic motor and the reduction gearbox, so that the wheels are driven to rotate. The electric drive axle 3 comprises an axle housing and an electric motor applicable to wheels, the electric motor integrates a planetary reduction gearbox applicable to the wheels, a hub reduction gearbox is the planetary reduction gearbox, a flange plate at one end is connected with a rim, and a flange plate at the other end is connected with the electric drive axle housing. The swing shaft 4 is used for supporting the electric drive axle 3, and can enable the electric drive axle 3 to swing within a certain angle range along the axial direction, so that the transverse unevenness factor of the road surface can be overcome. The electric energy discharged by the storage battery pack 5 is transmitted to the motor, and the motor is decelerated in multiple stages, amplifies the output torque and drives the wheels to rotate. The storage battery pack 5 is formed by connecting 27 25.6V storage batteries in series, stores electric energy in the storage batteries, and is used for driving a motor to rotate, and can be charged by an external power supply or a vehicle-mounted generator. The frame 6 is a bearing platform of the flat car, the side beams are of I-shaped structures and are connected together through the cross beams, and the overall strength is high. The brake bridge 7 is internally provided with a disc brake with a compact structure and has the functions of service braking and parking braking. The lifting oil cylinder 8 can enable the frame to rise or fall for a certain height, so that the lifting and falling actions of the loaded goods can be completed, and when the vehicle runs and encounters uneven road surfaces, the vehicle frame can be kept horizontal through the telescopic adjustment of the oil cylinders, so that the shock absorption effect is achieved. The electric cabinet 9 is internally provided with a controller for controlling the rotating speed and the discharge capacity of the hydraulic pump and the motor, a controller for controlling the driving motor, a controller for switching the hydraulic drive and the electric drive, a controller for controlling the charge and the discharge of the storage battery pack, a (CAN bus) communication device and the like, so that the operation of the whole flat car CAN be well controlled. The steering cylinder 10 is used for driving each group of wheels to rotate by corresponding angles according to the steering angle requirement of a driver, and the wheels pass through various curves once and again. The engine 11 is mainly used for driving the hydraulic pump set to rotate, transmitting hydraulic energy to the hydraulic motor to complete driving of wheels, and meanwhile, charging the storage battery pack. The generator 12 is driven to rotate by a flywheel disc of the engine, and can generate electric energy to supply power to the storage battery pack. The hydraulic pump set 13 comprises a closed pump and an open pump, the closed pump provides an oil source for the hydraulic motor, and the closed pump and the motor form a closed system to realize the driving of wheels. The open pump is responsible for providing a hydraulic oil source for the lifting oil cylinder and the steering oil cylinder.
Fig. 2 shows a schematic view of an electric drive axle. In the electric drive axle, the steel rim 31 is used for fixing the tire and finally driving the vehicle to run. The tire 32 provides support for the entire vehicle and facilitates vehicle travel. The bolts 33 and 34 are used for connecting the axle with the flange at the rear end of the wheel motor for connection. The axle housing 35 protects the wheel motor and provides support to the wheel. The bolts 36 are used to connect the rim to the flange at the front end of the wheel motor. The wheel motor 37 is a direct current motor, can provide large torque, is integrated with a planetary reduction gearbox, and drives wheels to rotate after the torque is amplified. The swing shaft hole 38 is attached to the swing shaft 4 and can rotate at a predetermined angle around the swing shaft 4.
When the flat car works in an idle load or light load mode, a driver switches to a mode driven by the wheel motor, the displacement of the pedal is used as an input signal of the controller and is converted into a digital signal by the controller to be output, and the controller controls the storage battery to output required current so that the motor rotates at a desired speed to drive the wheels to rotate. When the flat car works in a heavy load mode, a driver switches to a hydraulic motor driving mode, the pedal displacement is used as an input signal of the controller, the controller converts the input signal into a digital signal to output, the displacement and the rotating speed of the closed hydraulic pump are controlled, and meanwhile the displacement of the hydraulic motor is controlled to provide the traction force and the speed required by the flat car. When the flat car meets a large slope, the wheel motor 37 can be automatically started by the controller, and at the moment, the storage battery wheel motor 37 supplies power, so that the wheel motor 37 provides extra climbing traction.
When a driver runs on a curved road or a special road, the driver operates a steering wheel in the cab 1 to serve as an input signal of the steering angle of the flat car, the controller respectively controls the stretching of each steering oil cylinder according to a corresponding steering mode, at the moment, the open type hydraulic pump supplies oil to the steering oil cylinders, and the oil cylinders act to enable each group of wheels to complete corresponding turning angles.
The lift cylinder keeps in the intermediate position among the flatbed driving process, meets unsmooth road surface, and each hydro-cylinder can be flexible by self-adaptation. When the goods are lifted, the lifting oil cylinders need to be controlled by a driver to be lowered to a specified height, the lifting oil cylinders are supplied with oil by the open type hydraulic pump and then driven to the bottom of the goods, the driver controls the lifting oil cylinders to extend out at the same speed, and the goods are horizontally and slowly lifted until the lifting oil cylinders are lifted to the middle position. At the moment, the hydraulic motor rotates to drive the flat car to run. When the goods arrive at the destination, the lifting device can wait for other lifting equipment to finish the lifting of the goods, or control each lifting oil cylinder to simultaneously extend to a proper position, then the flat car runs to the specified position of the goods shelf, and the lifting oil cylinders contract again to slowly put down the goods.
The flat car running with no load or light load is characterized in that a power management system in a controller analyzes that the speed of the car is more than Vmin and the required power is less than Pmin, after specific algorithm operation, the driving mode is determined to be an electric wheel driving mode, at the moment, a storage battery supplies power to a wheel motor, the flat car is driven by the wheel motor, and the storage battery can be charged through a generator on an engine or an external independent charging device, so that clean energy is effectively utilized, the consumption of diesel oil is reduced, the probability of environmental pollution caused by leakage of hydraulic oil is reduced, and the noise in the no load running is reduced.
When the flat car is in heavy load or full load, the power management system analyzes that the car speed is less than Vmin and the required power is less than Pmax, and the driving mode is determined to be the hydraulic motor driving mode after specific algorithm operation. The hydraulic motor has large output torque, so that the flat car can be provided with large traction force.
When the flat car is in heavy-load climbing, the power management system analyzes that the speed of the car is less than Vmin and the required power is greater than Pmax, and after specific algorithm operation, the driving mode is determined to be a mode of driving by the hydraulic motor and the electric wheel together. The output torque of the hydraulic motor is larger, and the driving torque of the electric wheels is added, so that the flat car obtains the maximum traction force. The wheel motor can also increase the climbing force of the flat car, and can assist the hydraulic motor to drive the whole car to run when the flat car is in heavy load climbing.
Generally speaking, the flat car mainly comprises a hydraulic drive axle and a motor drive axle, wherein the hydraulic drive axle is connected with a mounting flange of a reduction gearbox, a hydraulic motor is arranged on the reduction gearbox, the output end of the reduction gearbox is connected with two steel ring bolts, the reduction gearbox is driven by the rotation of an oil pump, and the reduction gearbox drives the steel rings to rotate, so that the running of the car is realized.
The wheel motor with the built-in speed reducing mechanism is provided with an axle structure which is tried on the wheel motor, so that the wiring and the inspection of the motor are facilitated. The motor is small in size and large in torque, is integrated with the reduction gearbox compactly, and can meet the requirement of light-load and rapid running of the flat car by reasonably selecting the speed ratio of the reduction gearbox, increasing the output torque of the motor and reducing the rotating speed of the engine. When empty and light-load travel, switch to the electric drive mode, by the battery power supply, the battery can carry out quick charge through filling electric pile, also can fill slowly through on-vehicle motor. When the flat car meets a slope with a large gradient, the electric drive can be used as auxiliary power.
The power is driven by the diesel engine to drive the oil pump, and high-pressure oil is sent to a high-pressure port of the driving motor through a hydraulic pipeline. The diesel engine also simultaneously charges the battery pack. When stepping on the accelerator, the displacement of the pedal is converted into a digital signal according to the selection of gears, and the digital signal is distributed to a proportional multi-way valve for controlling the hydraulic motor, so that the hydraulic motor is controlled to output corresponding torque and rotating speed. Or the digital signal is sent to a controller of the motor to synchronously control the rotation of the motor.
The power management system special for the flat car is specially developed. When the flat car climbs in no-load, light-load and heavy-load states, the power management system analyzes the speed, the climbing slope, the power and the like, and determines that the driving mode is a hydraulic motor driving mode or an electric wheel driving mode and an electric wheel driving mode to assist the hydraulic motor driving mode after specific algorithm operation.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. An auxiliary electric drive hydraulic flat car is characterized by comprising a driver cab, a first hydraulic drive axle, an electric drive axle, a swing shaft, a storage battery pack, a second hydraulic drive axle, a car frame, a brake axle, a lifting oil cylinder, an electric control box, a steering oil cylinder, an engine, a generator and a hydraulic pump set, wherein the car frame is a bearing platform of the flat car, electric energy generated by the storage battery pack is transmitted to a wheel motor in the electric drive axle, the electric energy is amplified after multi-stage speed reduction and then output torque is output to drive wheels to rotate, the swing shaft is used for supporting the electric drive axle and enabling the electric drive axle to swing for a certain angle range along the axial direction, the brake axle has functions of driving and parking braking, the lifting oil cylinder enables the car frame to ascend or descend, the steering oil cylinder drives each group of wheels to rotate for a corresponding angle under the requirement of a steering angle of a driver, the engine is used for driving the hydraulic pump, the electric generator is driven to rotate through a flywheel disc of the engine to generate electric energy and charge the storage battery pack, the electric flat car further comprises an electric cabinet, a controller for controlling the rotating speed and the displacement of a hydraulic pump and a motor, a controller for controlling a driving motor, a controller for switching hydraulic drive and electric drive, a controller for controlling the charging and discharging of the storage battery pack and communication equipment are arranged in the electric cabinet, and a power management system is further arranged in the controller and controls the flat car to enter a parking charging mode, an electric wheel driving mode, a hydraulic motor independent driving mode and a hydraulic motor driving and auxiliary electric wheel driving mode according to driving working conditions, vehicle speed and power; each hydraulic drive axle comprises a reduction gearbox and a hydraulic motor, and hydraulic energy transmitted from the oil pump is finally transmitted to wheels after passing through the hydraulic motor and the reduction gearbox, so that the wheels are driven to rotate; the electric drive axle comprises a steel ring, a tire, a first bolt, a second bolt, an axle housing, a third bolt, a wheel motor and a swing axle hole, wherein the steel ring is used for fixing the tire and finally driving the vehicle to run; a disc brake with a compact structure is arranged in the brake bridge; when the flat car with no load or light load runs, a power management system in the controller analyzes that the speed of the flat car is greater than a low-speed threshold value and the required power is less than a low-power threshold value, the driving mode is determined to be an electric wheel driving mode, the storage battery supplies power to the wheel motor, and the flat car is driven by the wheel motor; when the flat car is in heavy load or full load, the power management system analyzes that the speed of the flat car is less than the low speed threshold and the required power is less than a high power threshold, and determines that the driving mode is a hydraulic motor driving mode; when the flat car is in heavy-load climbing, the power management system analyzes that the speed of the car is smaller than the low-speed threshold and the required power is larger than the high-power threshold, and the driving mode is determined to be a mode of driving by the hydraulic motor and the electric wheel together.
2. The auxiliary electric-driven hydraulic platform cart according to claim 1, wherein a planetary reduction gearbox is integrated into a wheel motor adapted to be mounted within the electric drive axle to amplify the torque and then drive the wheels into rotation.
3. The auxiliary electric-driven hydraulic flat car according to claim 1, wherein the hydraulic pump unit comprises a closed pump and an open pump, the closed pump provides an oil source for the hydraulic motor and forms a closed system with the motor to drive the wheels, and the open pump is responsible for providing the hydraulic oil source for the lift cylinder and the steering cylinder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611102578.3A CN106740040B (en) | 2016-12-05 | 2016-12-05 | Auxiliary electric drive hydraulic flat car |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611102578.3A CN106740040B (en) | 2016-12-05 | 2016-12-05 | Auxiliary electric drive hydraulic flat car |
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| CN106740040A CN106740040A (en) | 2017-05-31 |
| CN106740040B true CN106740040B (en) | 2019-12-27 |
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| CN110001379A (en) * | 2019-04-24 | 2019-07-12 | 吉林大学 | A kind of multiaxis drive system of hybrid power vehicle |
| CN111055914A (en) * | 2019-12-03 | 2020-04-24 | 中国人民解放军陆军装甲兵学院士官学校 | Vehicle composite drive chassis system |
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| CN101092121A (en) * | 2007-07-17 | 2007-12-26 | 苏州大方特种车辆有限公司 | Module type hydraulic pan conveyer |
| WO2012082022A1 (en) * | 2010-12-17 | 2012-06-21 | Volvo Lastvagnar Ab | Frame-steered vehicle |
| CN202088863U (en) * | 2011-05-17 | 2011-12-28 | 中国农业机械化科学研究院 | Hybrid power tractor |
| CN202319869U (en) * | 2011-12-05 | 2012-07-11 | 郑州新大方重工科技有限公司 | Multi-mode steering power flat car with storage battery and engine as power source |
| CN104015819A (en) * | 2014-06-10 | 2014-09-03 | 苏州大方特种车股份有限公司 | Auxiliary driving module vehicle and transport vehicle with same |
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| CN106740040A (en) | 2017-05-31 |
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