CN113324006A - Hydraulic torque converter assembly - Google Patents
Hydraulic torque converter assembly Download PDFInfo
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- CN113324006A CN113324006A CN202110715875.XA CN202110715875A CN113324006A CN 113324006 A CN113324006 A CN 113324006A CN 202110715875 A CN202110715875 A CN 202110715875A CN 113324006 A CN113324006 A CN 113324006A
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- oil
- shell
- torque converter
- retarder
- hydraulic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/04—Combined pump-turbine units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D13/00—Friction clutches
- F16D13/22—Friction clutches with axially-movable clutching members
- F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
- F16D13/385—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs double clutches, i.e. comprising two friction disc mounted on one driven shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D13/00—Friction clutches
- F16D13/58—Details
- F16D13/70—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
- F16D57/02—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders with blades or like members braked by the fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/24—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/14—Control of torque converter lock-up clutches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0212—Details of pistons for master or slave cylinders especially adapted for fluid control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention provides a hydraulic torque converter assembly, which solves the problems that the existing heavy vehicle has complex road conditions, frequent gear shifting and starting, the service life of a main clutch is shortened, and potential safety hazards exist in downhill braking. The assembly comprises a hydraulic torque converter, a hydraulic retarder, a turbine shaft flywheel, a gear shifting main clutch, a control system, a front bell-shaped cover shell, a torque converter shell, a retarder stator shell and a retarder rotor shell which are sequentially connected; the assembly realizes the starting stability and reliability of the heavy vehicle through the low-speed torque increasing function of the hydraulic torque converter, so that the gear shifting main clutch is protected; under the condition of good road conditions, the automatic locking of the hydraulic torque converter is realized, the efficiency of the whole vehicle is improved, and the power transmission performance, the fuel economy and the capability of adapting to various complex road conditions of the vehicle can be obviously improved.
Description
Technical Field
The invention belongs to the technical field of hydraulic mechanical transmission, and particularly relates to a hydraulic torque converter assembly.
Background
The transmission technical route adopted by the heavy vehicle mainly comprises an engine, a main clutch, a manual transmission or an AMT (automated mechanical transmission), the road condition of the vehicle is complex, and particularly under the heavy load condition, the service life of the main clutch can be reduced due to frequent gear shifting and starting.
Under the heavy load condition, the downhill braking of the vehicle mainly adopts the modes of water spraying and the like, and certain potential safety hazards exist, such as unobvious braking effect.
Disclosure of Invention
The invention provides a hydraulic torque converter assembly, which aims to solve the technical problems that the existing heavy vehicle has complex road conditions, frequent gear shifting and starting, the service life of a main clutch is shortened, and potential safety hazards exist in downhill braking.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a torque converter assembly, its characterized in that: the hydraulic transmission device comprises a shell assembly, a hydraulic torque converter, a hydraulic retarder, a turbine shaft flywheel, a gear shifting main clutch and a control system;
the shell assembly comprises a front bell-shaped shell, a torque converter shell, a retarder stator shell and a retarder rotor shell which are sequentially connected;
the hydraulic torque converter is arranged in a torque converter cavity formed by the front bell-shaped housing and the torque converter shell, and comprises a locking clutch, a transmission shaft, a locking clutch shell, a pump wheel, a turbine shaft and a guide wheel; the transmission shaft, the locking clutch shell, the pump wheel, the turbine and the turbine shaft sequentially transmit power; an input speed measuring gear ring is arranged on the pump wheel;
the guide wheel is fixed on the locking clutch shell, is positioned between the pump wheel and the turbine wheel and is used for changing the torque acting on the turbine wheel;
the locking clutch comprises a piston, a clutch steel sheet, a torsional damper and a friction plate; the piston is arranged in an accommodating groove of the locking clutch shell, and the clutch steel sheet is in key connection with the clutch shell; the friction plate is connected with the torsional damper in a key mode, and the torsional damper is fixedly connected with the turbine; the clutch steel sheet and the friction plate realize the locking and separating functions of the hydraulic torque converter under the action of the piston;
the control system comprises an oil distribution disc, an oil pump, a control valve and an oil pan;
the oil pan is arranged below the torque converter shell;
the control valve is arranged below the torque converter shell and is positioned in a cavity of the oil pan;
the oil pump and the oil distribution plate are arranged in a cavity between the torque converter shell and the retarder stator shell;
the hydraulic oil output from the oil outlet channel of the control valve enters the inner cavity of the hydraulic torque converter through the oil inlet channel and the oil distribution disc of the torque converter shell, then flows back to the control valve through the oil distribution disc, the oil outlet of the torque converter shell and the oil inlet channel of the control valve, and is conveyed to the oil bottom shell, so that the circulation of the hydraulic oil is realized; the locking oil passage of the control valve is communicated with the containing groove through an oil distribution disc and an oil passage on the locking clutch shell and is used for pushing the piston to move along the containing groove;
the hydraulic retarder comprises a stator and a rotor, wherein the stator is fixed in a retarder stator shell; the rotor is positioned in the retarder rotor shell and is connected with the turbine shaft key;
the retarder rotor shell is arranged on the turbine shaft in a dynamic sealing mode, a retarder cavity is formed between the retarder stator shell and the retarder rotor shell, and the retarder cavity is communicated with hydraulic oil in the oil sump;
the gear shifting main clutch comprises a pressure plate and a driven plate;
the turbine shaft flywheel, the driven disc and the pressure plate are sequentially arranged on the outer side of the retarder rotor shell along the axial direction;
the turbine shaft flywheel is arranged at the output end of the turbine shaft, and an output speed measuring gear ring is arranged on the turbine shaft flywheel;
the pressure plate is used for enabling the driven plate to tightly press the turbine shaft flywheel to realize power output;
and the control valve controls the on-off of the oil distribution disc locking oil path according to the rotating speed ratio of the input speed measuring gear ring and the output speed measuring gear ring.
Further, the device also comprises a three-position six-way valve, a radiator and a retarder control valve;
the three-position six-way valve is respectively connected with the control valve, the radiator and the oil pan, hydraulic oil which flows back to the control valve enters the radiator through the three-position six-way valve, and is conveyed to the oil pan through the three-position six-way valve after being cooled by the radiator;
and the retarder control valve is connected with an external air valve and is communicated with the three-position six-way valve.
Further, the retarder comprises a power takeoff arranged above the retarder stator shell; the idle wheel of the power takeoff realizes gear meshing transmission with the pump wheel through the power takeoff clutch;
the control valve further comprises a power takeoff oil duct which is communicated with the power takeoff and used for pushing a power takeoff piston to compress the friction plate, and power output of an output shaft of the power takeoff is achieved.
And one end of the power takeoff lubricating oil way is communicated with an oil way between the three-position six-way valve and the radiator, and the other end of the power takeoff lubricating oil way is communicated with a bearing and an idler wheel of the power takeoff.
Furthermore, a sealing ring is arranged between the retarder stator shell and the retarder rotor shell.
Further, the oil pump is meshed with a hub of the pump wheel through a gear.
Furthermore, a filter is arranged on an oil path between the oil pump and the oil pan.
Compared with the prior art, the invention has the advantages that:
1. the hydraulic torque converter assembly is integrated with a hydraulic torque converter, a hydraulic retarder and a gear shifting main clutch, and realizes the starting stability and reliability of a heavy vehicle through the low-speed torque increasing function of the hydraulic torque converter, so that the gear shifting main clutch is protected; in addition, under the condition of good road conditions, the oil pump pumps hydraulic oil in the oil pan into the containing groove of the locking clutch shell through the locking oil path of the oil distribution disc through the control valve, the piston is pushed to stretch along the containing groove, so that the piston is pushed to compress the friction plate, the rigid connection between the locking clutch shell and the turbine is realized, the automatic locking of the hydraulic torque converter is realized, the efficiency of the whole vehicle is improved, and the power transmission performance, the fuel economy and the capability of adapting to various complex road conditions of the vehicle can be obviously improved.
2. When the hydraulic torque converter assembly starts, the low-speed torque increasing function of the hydraulic torque converter is adopted, the clutch does not need to be stepped for starting, and the use reliability of the vehicle gear shifting main clutch is greatly improved.
3. The hydraulic torque converter assembly can realize hydraulic transmission and locked transmission of the vehicle (directly transmitting the torque of the engine to the gearbox) according to the speed ratio of input and output speeds monitored by the control system, has low off-road maneuverability at low speed, and has low high-speed oil consumption.
4. The braking torque can reduce the vehicle speed according to the independent judgment of the driver when the vehicle is heavily loaded and descends the slope, the auxiliary braking effect is obvious, and the safety of the vehicle is improved.
Drawings
FIG. 1 is a schematic illustration of a torque converter assembly according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at I;
wherein the reference numbers are as follows:
1-three-position six-way valve, 2-front bell-shaped housing, 3-locking clutch housing, 4-turbine, 5-guide wheel, 6-pump impeller, 7-torque converter housing, 8-oil distribution disc, 9-power takeoff, 10-retarder stator housing, 11-stator, 12-rotor, 13-retarder rotor housing, 14-pressure disc, 15-driven disc, 16-turbine shaft flywheel, 17-turbine shaft, 18-oil sump, 19-control valve, 20-oil pump, 21-input speed measuring gear ring, 22-torsional vibration damper, 23-transmission shaft, 24-input flange, 25-piston, 26-spline disc, 27-back plate, 28-clutch steel sheet, 29-friction sheet and 30-retarder control valve.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
As shown in fig. 1, a torque converter assembly of the present invention includes a housing assembly, a torque converter, a hydrodynamic retarder, a turbine shaft flywheel 16, a shift master clutch, a power takeoff 9 and a control system; the shell assembly comprises a front bell-shaped shell 2, a torque converter shell 7, a retarder stator shell 10 and a retarder rotor shell 13 which are connected in sequence.
The hydraulic torque converter is arranged in a torque converter cavity formed by the front bell-shaped housing 2 and the torque converter shell 7 and comprises a locking clutch, a transmission shaft 23, a locking clutch shell 3, a pump impeller 6, a turbine 4, a turbine shaft 17 and a guide wheel 5; the input flange 24 is connected with the transmission shaft 23 through a spline, the transmission shaft 23 is connected with the locking clutch shell 3 through a bolt, the pump impeller 6 is connected with the locking clutch shell 3 through a bolt and used for transmitting the input torque of an engine, the liquid flowing out of the pump impeller 6 flows into the turbine 4, the turbine 4 is connected with the turbine shaft 17, and mechanical energy is output, so that the transmission shaft 23, the locking clutch shell 3, the pump impeller 6, the turbine 4 and the turbine shaft 17 sequentially transmit power.
The stator 5 is fixed to the lockup clutch housing 3 between the pump impeller 6 and the turbine runner 4, and changes the direction of the flow of the fluid flowing out of the turbine runner 4, so that the torque applied to the turbine runner 4 is increased. When the heavy vehicle starts or the road conditions are severe, the device can automatically adapt to work, and the low-speed off-road performance of the heavy vehicle is met.
As shown in fig. 2, the lockup clutch includes a piston 25, a clutch steel plate 28, a friction plate 29, a spline plate 26, a torsional damper 22, and a back plate 27, the spline plate 26 is bolted to the lockup clutch housing 3, the clutch steel plate 28 and the friction plate 29 are mounted on the spline plate 26, the back plate 27 is bolted to the spline plate 26, the lockup clutch housing 3, and the pump impeller 6, the piston 25 is disposed in an accommodating groove of the lockup clutch housing 3, and the clutch steel plate 28 is disposed in the lockup clutch housing 3 and is keyed to the spline plate 28; the friction plate 29 is connected with the torsional damper 22 in a key mode, and the torsional damper 22 is connected with the turbine 4 through bolts; the clutch steel sheet 28 and the friction sheet 29 realize the locking and separating functions of the hydraulic torque converter under the action of the piston 25;
the hydrodynamic retarder comprises a stator 11 and a rotor 12 matched with the stator 11, wherein the stator 11 is fixedly arranged in a retarder stator shell 10 through bolts; the rotor 12 is positioned in the retarder rotor shell 13 and is connected with the turbine shaft 17 through a spline; the retarder rotor shell 13 is arranged on the turbine shaft 17 in a dynamic sealing mode, a sealing ring is arranged at the connecting position of the retarder rotor shell 13 and the retarder stator shell 10, and a retarder cavity is formed between the retarder stator shell 10 and the retarder rotor shell 13.
The gear shifting main clutch comprises a pressure plate 14 and a driven plate 15; the turbine shaft flywheel 16, the driven disc 15 and the pressure plate 14 are sequentially arranged on the outer side of the retarder rotor shell 13 along the axial direction; the turbine shaft flywheel 16 is arranged at the output end of the turbine shaft 17; the pressure plate 14 is used for enabling the driven plate 15 to press the turbine shaft flywheel 16 to achieve power output.
The control system comprises an input speed measuring gear ring 21, an output speed measuring gear ring, an oil distribution disc 8, an oil pump 20, a control valve 19, an oil pan 18, a three-position six-way valve 1 and a radiator; the input speed measuring gear ring 21 is arranged on the pump impeller 6; the output speed measuring gear ring is arranged on the turbine shaft flywheel 16; the oil pan 18 is arranged below the torque converter shell 7, and the oil pan 18 provides a cavity for storing hydraulic oil; the control valve 19 is disposed below the torque converter housing 7 and in the oil pan 18; the oil pump 20 and the oil distribution plate 8 are disposed in an oil distribution plate cavity between the torque converter housing 7 and the retarder stator housing 10.
The hydraulic oil in the oil pan 18 is pumped into the control valve 19 by the oil pump 20 after being filtered by a filter, the control valve 19 comprises a main oil passage and a sensor for measuring the oil pressure of the main oil passage, an oil inlet passage and a sensor for measuring the oil pressure of the oil inlet passage, an oil outlet passage and a sensor for measuring the oil pressure of the oil outlet passage, a locking oil passage and a sensor for measuring the locking oil passage, a power takeoff oil passage and a power takeoff oil passage oil pressure, the main oil passage is communicated with the oil pump 20, the oil outlet passage and the oil inlet passage are communicated with an oil inlet and an oil outlet of the oil distribution disc 8, the locking oil passage is communicated with a locking oil port of the oil distribution disc 8, the hydraulic oil in the oil outlet passage of the control valve 19 after being adjusted by the control valve 19 enters the oil passage of the oil distribution disc 8 through the oil inlet passage of the torque converter shell 7, then enters the inner cavity of the hydraulic torque converter and then passes through a trilobe wheel of the inner cavity of the hydraulic torque converter (the hydraulic torque converter is in a hydraulic working condition), the oil channel of the oil distribution disc 8, the oil channel of the torque converter shell 7 and the oil inlet channel of the control valve 19 enter the control valve 19, the control valve 19 enters the three-position six-way valve 1 through an oil pipe after pressure is adjusted, the three-position circulation valve is located at one port of the three-position six-way valve 1 at the initial position, and enters the oil pan 18 after being cooled by a radiator after entering the three-position six-way valve 1, and cooling and circulation of the oil channel are achieved. When the hydraulic torque converter is locked, one path of a locking oil passage in the control valve 19 enters the locking clutch shell 3 through a locking oil passage of the oil distribution disc 8 to work, and the other path of the locking oil passage is connected by an oil pipe to control the three-position six-way valve 1 to realize that the three-position six-way valve 1 is in a middle position, and similarly, the oil outlet of the hydraulic torque converter enters the radiator through the three-position six-way valve 1 to be cooled, but the hydraulic oil cooled by the radiator enters the oil pan 18 from the other port of the three-position six-way valve 1 to realize the cooling and circulation of the oil.
The control system monitors an input speed measuring gear ring 21 on the pump wheel 6 and an output speed measuring gear ring on the turbine shaft flywheel 16, measures the input and output speed ratio, controls the locking clutch of the hydraulic torque converter to be combined and separated according to the speed ratio, realizes hydraulic transmission and locking transmission of the hydraulic torque converter (directly transmits the engine torque to the gearbox), has low-speed cross-country maneuverability, and has low high-speed oil consumption; under the condition that the rotating speed ratio meets the locking condition (the road condition is good), the proportional valve of the locking clutch is controlled to be opened, the locking oil passage of the control valve 19 enters the accommodating groove through the oil passage of the torque converter shell 7, the locking oil passage of the oil distribution disc 8, the oil passage of the turbine shaft and the oil passage of the locking clutch shell 3, so that the piston 25 is pushed to compress the friction plate 29, the rigid connection of the locking clutch shell 3 and the turbine 4 is realized, and the torque of the engine is directly output to the gearbox.
The power takeoff 9 is arranged above the retarder stator shell 10, after a control system obtains a power takeoff working instruction, a power takeoff oil duct of the control valve 19 is communicated with an oil duct of the torque converter shell 7 and an oil duct communicated with the power takeoff 9 through an oil pipe, and hydraulic oil pushes a power takeoff piston to press a friction plate, so that power output of an output shaft of the power takeoff is achieved. Power is transmitted by the pump wheel 6 through meshing with the idler gear, and the idler gear of the power takeoff 9 is in gear meshing with the power takeoff 9. The cooling oil on the three-position circulation valve can be communicated through a power takeoff lubricating oil pipe and is used for lubricating a gear bearing and an idler bearing of the power takeoff 9. When the power takeoff switch valve is closed, the clutch of the power takeoff 9 is separated, and no power is output. When the hydrodynamic retarder does not work, hydraulic oil is hardly contained in a retarder cavity formed by the retarder stator shell 10 and the retarder rotor shell 13, and the retarder rotor 12 rotates along with the turbine shaft 17 and cannot form braking torque. When the hydraulic retarder works, an air source on the vehicle is communicated with an external proportional air valve (realized by controlling a retarder gear handle by cab personnel) and is respectively connected into the three-position six-way valve 1 and the retarder control valve 30 through a three-way air pipe, and the retarder control valve 30 is arranged on the retarder rotor shell 13 and is positioned in a retarder cavity. When a driver operates a retarder gear handle, the proportional air valve can adjust different air pressure values and control the position of the retarder control valve 30 and the valve core position of the three-position six-way valve 1, so that hydraulic oil enters a retarder cavity through the three-position six-way valve 1, the hydraulic oil firstly passes through the blades of the stator 11, and the hydraulic oil acts on the blades of the rotor 12 to form a reaction force due to the fixation of the stator 11, so that a braking torque is formed. The position through retarber control valve 30 controls the flow size of the hydraulic oil that gets into the retarber cavity to control the braking torque of hydraulic retarber, hydraulic retarber during operation can convert hydraulic energy into heat energy, consequently can heat oil, and hydraulic retarber's oil feed enters into the retarber cavity after three-position six-way valve 1 and radiator cooling and brakes, hydraulic retarber goes out oil and flows back to oil pan 18, realizes the cooling and the circulation of fluid.
The hydraulic torque converter assembly integrates a hydraulic torque converter, a hydraulic retarder and a gear shifting main clutch, and realizes the starting stability and reliability of a heavy vehicle through the low-speed torque increasing function of the hydraulic torque converter, so that the main clutch is protected; in addition, under the condition of good road conditions, the oil pump 20 pumps hydraulic oil in the oil pan 18 into the accommodating groove through a locking oil path of the oil distribution plate 8 through the control valve 19, pushes the piston 25 to press the friction plate 29, realizes rigid connection of the locking clutch shell 3 and the turbine 4, namely realizes automatic locking of the hydraulic torque converter, and improves the efficiency of the whole vehicle. The power transmission performance and the fuel economy of the vehicle can be obviously improved, and the capability of adapting to various complex road conditions is improved.
The torque converter assembly of the embodiment can realize the output of the power takeoff 9 by controlling the power takeoff clutch, and meets the requirements of vehicles under various other application working conditions. The oil inlet amount of the retarder is controlled through the proportional air valve, so that the braking torque of the hydraulic retarder is controlled, and the downhill safety and reliability of braking of a heavy-duty vehicle are met. The maximum transmission torque of the main clutch reaches 4000 Nm. The hydraulic torque converter assembly of the embodiment realizes the output of the power of the engine by combining and disconnecting the power takeoff clutch, and meets the requirements of other operations on the rotating speed and the power.
The above description is only for the preferred embodiment of the present invention and does not limit the technical solution of the present invention, and any modifications made by those skilled in the art based on the main technical idea of the present invention belong to the technical scope of the present invention.
Claims (7)
1. A torque converter assembly characterized by: the gear shifting device comprises a shell component, a hydraulic torque converter, a hydraulic retarder, a turbine shaft flywheel (16), a gear shifting main clutch and a control system;
the shell assembly comprises a front bell-shaped cover shell (2), a torque converter shell (7), a retarder stator shell (10) and a retarder rotor shell (13) which are connected in sequence;
the hydraulic torque converter is arranged in a torque converter cavity formed by the front bell-shaped housing (2) and the torque converter shell (7), and comprises a locking clutch, a transmission shaft (23), a locking clutch shell (3), a pump impeller (6), a turbine (4), a turbine shaft (17) and a guide wheel (5); the transmission shaft (23), the locking clutch shell (3), the pump wheel (6), the turbine (4) and the turbine shaft (17) sequentially transmit power; an input speed measuring gear ring (21) is arranged on the pump wheel (6);
the guide wheel (5) is fixed on the locking clutch shell (3) and is positioned between the pump wheel (6) and the turbine wheel (4) and used for changing the torque acting on the turbine wheel (4);
the locking clutch comprises a piston (25), a clutch steel sheet (28), a torsional damper (22) and a friction plate (29); the piston (25) is arranged in an accommodating groove of the locking clutch shell (3), and the clutch steel sheet (28) is connected with the clutch shell (3) in a key mode; the friction plate (29) is connected with the torsional damper (22) in a key mode, and the torsional damper (22) is fixedly connected with the turbine (4); the clutch steel sheet (28) and the friction sheet (29) realize the locking and separating functions of the hydraulic torque converter under the action of the piston (25);
the control system comprises an oil distribution disc (8), an oil pump (20), a control valve (19) and an oil pan (18);
the oil pan (18) is arranged below the torque converter housing (7);
the control valve (19) is arranged below the torque converter shell and is positioned in a cavity of the oil pan (18);
the oil pump (20) and the oil distribution disc (8) are arranged in a cavity between the torque converter shell (7) and the retarder stator shell (10);
the hydraulic oil in the oil pan (18) is conveyed to the control valve (19) by the oil pump (20), the control valve (19) comprises a main oil duct, an oil inlet channel, an oil outlet channel and a locking oil duct, the main oil duct is connected with the oil pump (20), the hydraulic oil output from the oil outlet channel of the control valve (19) enters the inner cavity of the hydraulic torque converter through the oil inlet channel of the torque converter shell (7) and the oil distribution disc (8), then flows back to the control valve (19) through the oil distribution disc (8), the oil outlet of the torque converter shell (7) and the oil inlet channel of the control valve (19), and is conveyed to the oil pan (18), so that the circulation of the hydraulic oil is realized; the locking oil passage of the control valve (19) is communicated with the containing groove through an oil distribution disc (8) and an oil passage on the locking clutch shell (3) and is used for pushing the piston (25) to move along the containing groove;
the hydrodynamic retarder comprises a stator (11) and a rotor (12), wherein the stator (11) is fixed in a retarder stator shell (10); the rotor (12) is positioned in the retarder rotor shell (13) and is connected with the turbine shaft (17) in a key mode;
the retarder rotor shell (13) is arranged on the turbine shaft (17) in a dynamic sealing mode, a retarder cavity is formed between the retarder stator shell (10) and the retarder rotor shell (13), and the retarder cavity is communicated with hydraulic oil in an oil sump (18);
the gear shifting main clutch comprises a pressure plate (14) and a driven plate (15);
the turbine shaft flywheel (16), the driven disc (15) and the pressure disc (14) are sequentially arranged on the outer side of the retarder rotor shell (13) along the axial direction;
the turbine shaft flywheel (16) is arranged at the output end of the turbine shaft (17), and an output speed measuring gear ring is arranged on the turbine shaft flywheel (16);
the pressure plate (14) is used for enabling the driven plate (15) to press the turbine shaft flywheel (16) to realize power output;
and the control valve (19) controls the on-off of a closed oil path of the oil distribution disc (8) according to the rotating speed ratio of the input speed measuring gear ring (21) and the output speed measuring gear ring.
2. The torque converter assembly of claim 1, wherein: the three-position six-way valve (1), the radiator and the retarder control valve (30) are also included;
the three-position six-way valve (1) is respectively connected with the control valve (19), the radiator and the oil pan (18), and hydraulic oil which flows back to the control valve (19) enters the radiator through the three-position six-way valve (1), is cooled by the radiator and then is conveyed to the oil pan (18) through the three-position six-way valve;
the retarder control valve (30) is connected with an external air valve and is communicated with the three-position six-way valve (1).
3. The torque converter assembly of claim 2, wherein: the retarder comprises a retarder stator shell (10) and a power takeoff (9) arranged above the retarder stator shell; an idler wheel of the power takeoff (9) realizes gear meshing transmission with the pump wheel (6) through a power takeoff clutch;
the control valve (19) further comprises a power takeoff oil duct which is communicated with the power takeoff and used for pushing a power takeoff piston to press the friction plate, and power output of an output shaft of the power takeoff (9) is achieved.
4. A torque converter assembly as claimed in claims 1 to 3 wherein: and one end of the power takeoff lubricating oil way is communicated with an oil way between the three-position six-way valve and the radiator, and the other end of the power takeoff lubricating oil way is communicated with a bearing and an idler wheel of the power takeoff.
5. The torque converter assembly of claim 4, wherein: and a sealing ring is arranged between the retarder stator shell (10) and the retarder rotor shell (13).
6. The torque converter assembly of claim 5, wherein: the oil pump (20) is meshed with the hub of the pump wheel (6) through a gear.
7. The torque converter assembly as recited in claim 6, wherein: and a filter is arranged on an oil path between the oil pump (20) and the oil pan (18).
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| CN202110715875.XA CN113324006B (en) | 2021-06-24 | 2021-06-24 | Hydraulic torque converter assembly |
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| CN202110715875.XA CN113324006B (en) | 2021-06-24 | 2021-06-24 | Hydraulic torque converter assembly |
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| CN113324006B CN113324006B (en) | 2023-05-09 |
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