CN117628137A - Transmission system of hydraulic torque converter - Google Patents

Abstract

The utility model belongs to the technical field of torque converter, for solving current torque converter structure assembly complicacy, and the turbine finishes the back, the unable technical problem who changes of oil-out width between turbine and the guide pulley, a torque converter transmission system is provided, input end cover, cover wheel and pump wheel module fixed connection, cover wheel module still includes first supporting bearing, first supporting bearing installs between cover wheel and turbine hub, the ring channel has been seted up on the terminal surface that input end cover and first supporting bearing offset, the ring channel runs through the input end cover hole, form first axial clearance between ring channel bottom and first supporting bearing, the separation blade is installed on turbine hub, the separation blade is located first axial clearance, be used for axial restraint to turbine and turbine hub. The assembly process of the torque converter assembly is simplified, and the working efficiency under the locking working condition is improved.

Description

Transmission system of hydraulic torque converter

Technical Field

The application belongs to the technical field of torque converters and relates to a hydraulic torque converter transmission system.

Background

The engineering machinery vehicle has the characteristics of complex working condition and variable load, and when a large driving load is met, the high-frequency load change is extremely easy to cause the large fluctuation of the engine speed and even flameout, so that the operation progress of the engineering machinery vehicle is not facilitated. The hydraulic torque converter is used as a core component of a transmission system, can enable a matched vehicle to start stably, enables an engine to work smoothly, has the functions of torque conversion and torque increase, and is widely applied to the fields of passenger vehicles, commercial vehicles and engineering machinery. Because of the special arrangement, the torque converter and the transmission are not designed together in an integrated manner, but the torque converter is designed as a single transmission system unit, and a hydraulic control module and a power take-off module are integrated.

In the prior art, the turbine module is generally fixed on the turbine shaft, and the axial positioning among the turbine module, the pump wheel module and the guide wheel module has great influence on the performance of the torque converter, because the size chain elements from the turbine shaft to the pump wheel of the torque converter are more, for accurate positioning, an adjusting gasket is required to be arranged at the front end of the turbine shaft when the turbine is positioned, so that challenges are brought to assembly work, and the assembly complexity is improved. Meanwhile, after the turbine is installed, the turbine shaft is generally fixedly connected with the turbine shaft, axial movement is not performed any more, and the width of an oil outlet between the turbine and the guide wheel becomes a fixed value and cannot be changed.

Disclosure of Invention

The utility model provides a solve current torque converter structure assembly complicacy to and the turbine finishes the back of installing, the unable technical problem who changes of the oil-out width between turbine and the guide pulley provides a torque converter transmission system.

In order to achieve the above purpose, the present application is implemented by adopting the following technical scheme:

a hydraulic torque converter transmission system comprises a torque converter module, a shell module, a hydraulic control unit module, a power taking module and a power transmission module; the torque converter module comprises a cover wheel module, a pump wheel module, a turbine module and a guide wheel module; the power transmission module comprises a turbine shaft; the turbine module comprises a turbine and a turbine hub, wherein the turbine is mounted on a turbine shaft through the turbine hub; the cover wheel module comprises an input end cover and a cover wheel which are connected; the device also comprises a baffle;

the input end cover, the cover wheel and the pump wheel module are fixedly connected;

the cover wheel module further comprises a first support bearing, the first support bearing is arranged between the cover wheel and the turbine hub, an annular groove is formed in the end face, which abuts against the first support bearing, of the input end cover, the annular groove penetrates through an inner hole of the input end cover, and a first axial gap is formed between the bottom of the annular groove and the first support bearing;

the blades are mounted on the turbine hub and located in the first axial gap for axially constraining the turbine and turbine hub.

Further, the housing module includes a front housing module and a rear housing module;

the front end of the front shell module is sleeved outside the cover wheel and connected with the cover wheel, and the rear end of the front shell module is connected with the rear shell module; a first mounting cavity is formed between the front end and the rear end of the front shell module and is used for accommodating the torque converter module; and a second mounting cavity is formed between the rear end of the front shell module and the rear shell module and is used for accommodating the power taking module.

Further, the power take-off module comprises a sun gear, a driving gear, a second support bearing, a support shaft and a locking bolt;

the central gear is fixedly connected with the pump wheel module;

the driving gear is arranged on the supporting shaft through a second supporting bearing and is meshed with the central gear;

the support shaft is connected with the rear housing module through a locking bolt.

Further, the support shaft is provided with a first threaded hole along the axial direction, and the rear shell module is provided with a second threaded hole;

the locking bolt is arranged in the first threaded hole and the second threaded hole, and connects the support shaft with the rear shell module;

an axial deviation is arranged between the axis of the outer wall surface of the support shaft and the axis of the first threaded hole, and an axial deviation is arranged between the axis of the first threaded hole and the axis of the second threaded hole.

Further, the cover wheel module further comprises a lockup clutch module comprising a piston, a back plate, at least two friction plates and at least two pair plates;

the backboard is fixed on the cover wheel;

the piston is arranged in the cover wheel, a piston cavity is formed between the pressure surface of the piston and the cover wheel, a through hole is formed in the piston, and the through hole is communicated with the piston cavity and a back pressure cavity of the piston;

the dual piece and the friction piece are arranged between the piston and the back plate and are used for realizing axial rotation constraint on the cover wheel; the friction plate and the dual plates are arranged at intervals, and the friction plate is positioned at the outer side.

Further, the power transmission module further comprises a guide wheel seat, a turbine shaft, a lock nut and an output flange plate;

the guide wheel seat is fixed on the rear shell module;

the output flange plate is fixed on the turbine shaft through a locking nut;

the turbine shaft is arranged on the rear shell module through a third support bearing, and the third support bearing is arranged on the rear shell module;

the pump wheel module is arranged on the guide wheel seat through a fourth support bearing.

Further, the guide wheel seat further comprises a first check ring and a second check ring which are arranged on the guide wheel seat;

the guide wheel module is supported on the guide wheel seat through a fifth support bearing and a one-way clutch; the guide wheel seat is provided with a first circumferential limit step, a second circumferential limit step and a third circumferential limit step, the first check ring is propped against the first limit step, and the second check ring is propped against the third circumferential limit step; the fifth support bearing is respectively propped against the first check ring and the second circumferential limit step;

the rear end of the guide wheel seat is propped against the rear shell module;

and the second check ring is propped against the pump wheel module.

Further, the torque converter module further includes a torsional damper module;

the torsional damper module is positioned between the cover wheel module and the turbine module; the input end of the torsional damper module is connected with the friction plate, and the output end of the torsional damper module is connected with the output end of the turbine module.

Further, the hydraulic control unit module includes a latching oil passage;

the locking oil circuit comprises a hydraulic control unit locking oil circuit, a rear shell module locking oil circuit, a turbine shaft locking oil circuit, an input end cover locking oil circuit and a cover wheel locking oil circuit which are communicated in sequence, and the cover wheel locking oil circuit is communicated with the piston cavity.

Further, the hydraulic control unit module further comprises a hydraulic oil circuit;

the hydraulic oil way comprises a guide wheel diameter annular oil way, a guide wheel seat and turbine shaft annular oil way, a guide wheel seat oil return oil way, a rear shell module oil return oil way, a main oil way, a rear shell module oil inlet oil way, a guide wheel seat oil inlet oil way and a pump wheel hub oil inlet oil way which are communicated in sequence, wherein the main oil way is communicated with external hydraulic oil, and the pump wheel hub oil inlet oil way is communicated with a torque converter cavity;

the guide wheel diameter ring surface oil way is communicated with the torque converter cavity, and the rear shell module oil return oil way is communicated with the outside.

Compared with the prior art, the application has the following beneficial effects:

according to the hydraulic torque converter transmission system, the turbine module is axially restrained through the baffle plate and the cover wheel module which are arranged on the turbine hub, so that a closed size chain is formed by the turbine module and the pump wheel module, the axial positioning of the pump wheel module and the turbine module is completed, an adjusting gasket between the turbine module and a turbine shaft is omitted, and the assembly process of the torque converter assembly is simplified. The baffle is positioned in the first axial gap, the turbine module receives thrust pointing to the direction of the pump wheel according to the stress characteristic of the turbine module, and at the moment, the baffle positioned on the turbine hub is contacted with the first support bearing arranged on the cover wheel to carry out axial limiting, and the turbine, the guide wheel and the pump wheel form a complete torque converter impeller module to complete the torque conversion working condition; when the torque converter is in the lockup working condition, the torque converter does not play a role in torque conversion any more, the turbine module receives thrust in the direction of the cover wheel, the direct axial movement gap between the turbine module and the input end cover is eliminated, the theoretical gap of an oil outlet between the turbine module and the guide wheel module is enlarged, the area of the oil outlet of the torque converter is enlarged, the oil circulation resistance is reduced, and the working efficiency under the lockup working condition is improved.

Drawings

For a clearer description of the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and should therefore not be considered limiting in scope, and that other related drawings can be obtained according to these drawings without the inventive effort of a person skilled in the art.

FIG. 1 is a schematic structural diagram of an embodiment of a torque converter transmission system of the present application.

FIG. 2 is a schematic view of an assembly of a shroud wheel module and a turbine module in an embodiment of the present application;

FIG. 4 is a partially enlarged schematic illustration of FIG. 2D;

FIG. 5 is a schematic view of an oil outlet between a turbine module and a stator module in an embodiment of the present application;

FIG. 6 is a schematic view of an oil outlet between a turbine module and a stator module in a lockout direct drive mode in an embodiment of the present application;

FIG. 7 is an enlarged view of a portion of a lockup clutch module according to an embodiment of the present application;

FIG. 8 is a schematic illustration of eccentric mounting of a support shaft in an embodiment of the present application;

FIG. 9 is a ratio and efficiency comparison of the transmission system of the present application with a comparison embodiment;

FIG. 10 is a plot of the lockup pressure response versus the transmission of the present application versus the comparative embodiment.

Wherein, 1-torque converter module, 2-housing module, 3-hydraulic control unit module, 4-power take-off module, 5-power transfer module, 6-first retainer, 7-second retainer, 8-retainer, 11-cover wheel module, 12-torsional damper module, 13-pump wheel module, 14-turbine module, 15-guide wheel module, 16-oil inlet, 17-oil outlet, 21-front housing module, 22-rear housing module, 31-hydraulic control unit latching oil path, 32-rear housing module latching oil path, 33-turbine shaft latching oil path, 34-input end cap latching oil path, 35-cover wheel latching oil path, 36-piston chamber, 37-back pressure chamber, 41-guide wheel seat, 42-turbine shaft 43-lock nut, 44-output flange, 51-sun gear, 52-drive gear, 53-second support bearing, 54-support shaft, 55-lock bolt, 111-input end cap, 112-cage wheel, 113-first support bearing, 114-lockup clutch module, 121-torsional damper module input, 122-torsional damper module output, 131-pump wheel, 132-fourth support bearing, 141-turbine, 142-turbine hub, 151-stator, 152-one-way clutch, 153-fifth support bearing, 1141-piston, 1142-friction plate, 1143-dual plate, 1144-back plate, 1141 a-through hole, 222-fourth support bearing.

Fig. 3 is a partial schematic view of the vicinity of a piston in a comparative embodiment of the present application.

Wherein 09-lock bolt, 010-adjust washer, 014-turbine module, 042-turbine shaft, 0141-turbine, 0142-turbine hub, 0143-lock disk.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present application, it should be noted that, if the terms "upper," "lower," "horizontal," "inner," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present application and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the term "horizontal" if present does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The casing that is applicable to torque converter transmission system assembly of engineering machine tool generally adopts the integral type casting, puts torque converter module 1 and power take off module 4 in a casing, and the centre is with punching press baffle to carry out wet and dry separation, causes the depth of casing to be darker, has improved the degree of difficulty of assembly and maintenance dismantlement.

During use of the torque converter drive train assembly, due to the complexity of working conditions of the engineering machinery vehicle, the torque demand in the force taking module 4 changes rapidly, the torque fluctuation is large, the locking bolt 55 for fixing the driving gear 52 is easy to loosen, and the supporting shaft 54 rotates relative to the shell, so that the supporting shaft 54 is worn out prematurely.

The torque converter assembly for the part of engineering machinery is matched with the locking clutch, so that the use efficiency of the torque converter is improved, however, due to the complexity of working conditions of the engineering machinery, the locking slip value of the locking clutch is large, locking is frequent, meanwhile, the locking pressure of the torque converter with large torque capacity is large, large locking pressure pulse is caused, and the driving comfort of a vehicle system is seriously affected.

In view of the above, the present application proposes a torque converter transmission system that may include a torque converter module 1, a housing module 2, a hydraulic control unit module 3, a power take-off module 4, a power transfer module 5, and a baffle 8.

The torque converter module 1 includes a cover wheel module 11, a pump wheel module 13, a turbine module 14, and a stator module 15. The cover wheel module 11 includes an input end cap 111 and a cover wheel 112 connected, and the cover wheel module 11 is mainly used for guiding the flow direction of fluid entering the torque converter and protecting core components such as the pump wheel 131, the turbine wheel 141 and the like. The impeller module 13 is used to convert fluid kinetic energy into pressure energy by rotation, the impeller module 13 typically having a series of blades for directing the fluid flow and increasing its pressure. The turbine module 14 is used to convert pressure energy generated by the pump impeller 131 into mechanical energy. The turbine module 14 is used to rotate the blades and drive the overall torque converter system as fluid flows through the turbine 141. The stator module 15 is used to redirect the flow of fluid to ensure that the fluid is effectively flowing out of the turbine 141 and into the next working cycle.

The power transmission module 5 includes a turbine shaft 42. The turbine shaft 42 is an important component connecting the turbine 141 and the transmission system, and is responsible for transmitting power generated by the turbine 141 to the transmission system, thereby driving the vehicle or other equipment to operate.

The turbine module 14 includes a turbine 141 and a turbine hub 142, the turbine 141 being mounted on the turbine shaft 42 by the turbine hub 142. Turbine 141 is a turbine 141 engine or a core component in a turbine 141 machine that uses the power of a fluid (typically gas or steam) to drive the rotation of a rotor. The turbine 141 converts the thermal energy of the fluid into mechanical energy and transmits it out through the turbine shaft 42. The turbine hub 142 is a connecting member between the turbine 141 and the turbine shaft 42, and serves to fix the turbine 141 to the turbine shaft 42.

As shown in fig. 4, the attachment structure of the flap 8 is shown. The input end cover 111 and the cover wheel 112 are fixedly connected together and then fixedly connected with the pump wheel module 13, so that the power transmission from the input end cover 111 to the cover wheel 112 to the pump wheel module 13 is realized. The cover wheel module 11 further includes a first support bearing 113, the first support bearing 113 is mounted between the cover wheel 112 and the turbine hub 142, an annular groove is formed on an end surface of the input end cover 111, which abuts against the first support bearing 113, the annular groove penetrates through an inner hole of the input end cover 111, and a first axial gap is formed between the bottom of the annular groove and the first support bearing 113. The baffle 8 is mounted on the turbine hub 142 with the baffle 8 being located in the first axial gap for axially constraining the turbine 141 and the turbine hub 142.

In the present application, the turbine module 14 is located between the shroud wheel module 11 and the stator module 15, and the turbine module 14 may be radially supported on the turbine shaft 42 in the form of a spline connection. The baffle plate 8 with the thickness delta k is mounted on the turbine hub 142, a first axial clearance example between the input end cover 111 and the first support bearing 113 is provided, the axial length of the first axial clearance is delta t, the axial constraint is carried out on the turbine module 14 through the baffle plate 8, the axial movement clearance of the turbine module 14 with the delta t-delta k is formed, the turbine module 14 forms a dimensional chain relation through the baffle plate 8, the first support bearing 113, the cover wheel 112 and the pump wheel 131, the dimensional chain is simpler, an adjusting gasket between the turbine module 14 and the turbine shaft 42 is omitted, and the assembly process of the torque converter assembly is simplified.

As shown in fig. 5, a schematic view of oil outlet 17 between turbine module 14 and stator module 15 is shown. An oil inlet 16 is formed between the pump wheel module 13 and the guide wheel module, and the theoretical clearance of an oil outlet 17 between the turbine module 14 and the guide wheel module 15 is delta n, so that the turbine module 14, the pump wheel module 13 and the guide wheel module 15 form a complete cycle to perform torque conversion work. As shown in fig. 6, a schematic view of the oil outlet 17 between the turbine module 14 and the stator module 15 in the locked direct drive mode is shown. When in the locked direct drive mode, the hydraulic pressure received by the turbine module 14 changes in direction, so that the turbine module 14 is pushed to move leftwards along the turbine shaft 42, and at this time, the theoretical clearance of the oil outlet 17 between the turbine module 14 and the stator module 15 is Δn+ (. DELTA.t-. DELTA.k), so that the overflow area of the oil outlet 17 is increased. The flow resistance is reduced, the circulation efficiency of oil in the torque converter is improved, and further the working efficiency of the torque converter under the locking working condition is improved.

As shown in fig. 1, a schematic structural diagram of a torque converter transmission system according to the present application is shown. In an embodiment of the present application, a torque converter transmission system may include a torque converter module 1, a housing module 2, a hydraulic control unit module 3, a power take-off module 4, and a power transfer module 5.

The hydraulic control unit module 3 mainly includes two kinds of oil passages: firstly, the main oil path receives hydraulic oil conveyed from the outside, the torque converter oil inlet path controls the hydraulic oil to enter the torque converter cavity through a valve body, an oil inlet path of the rear housing module 22, an oil inlet path of the guide wheel seat 41, an oil inlet path of the pump wheel 131 hub and the like, after the circulation is completed, the hydraulic oil is discharged through the valve body, cooled and filtered after the circulation is completed, through a turbine 141 and guide wheel 151 diameter annular oil path, a guide wheel seat 41 and a turbine shaft 42 annular oil path, a guide wheel seat 41 oil return oil path and a rear housing module 22 oil return path. Second, when the hydraulic module receives the locking command, the locking valve is opened, and the locking oil circuit is locked by the hydraulic control unit through the locking oil circuit 31, the locking oil circuit 32 of the rear shell module, the locking oil circuit 33 of the turbine shaft, the locking oil circuit 34 of the input end cover, the locking oil circuit 35 of the cover wheel and the piston cavity 36, so that the piston 1141 is pushed to move.

The torque converter module 1 includes a cover wheel module 11, a torsional damper module 12, a pump wheel module 13, a turbine module 14, and a stator module 15. As shown in fig. 2, a schematic structural diagram of the shroud wheel module and the turbine module in the present application is shown, wherein the shroud wheel module 11 includes an input end cover 111, a shroud wheel 112, a lockup clutch module 114, and a first support bearing 113. The input end cover 111 and the first support bearing 113 are both arranged on the cover wheel 112, an annular groove is formed in the end face, which abuts against the first support bearing 113, of the input end cover 111, the annular groove penetrates through an inner hole of the input end cover 111, and a first axial gap is formed between the bottom of the annular groove and the first support bearing 113. The lockup clutch module 114 includes a piston 1141, friction plates 1142, a pair of plates 1143, and a back plate 1144, the back plate 1144 being secured to the shroud wheel 112, the piston 1141 being mounted embedded in a groove in the shroud wheel 112, the pair of plates 1143 and the shroud wheel 112 being axially rotationally constrained by a spline design, and in other embodiments of the present application, the pair of plates 1143 and the shroud wheel 112 being axially rotationally constrained by other connection means. The dual plate 1143 and the friction plate 1142 are mounted between the back plate 1144 and the piston 1141, the friction plate 1142 and the dual plate 1143 are spaced apart, and the friction plate 1142 is located between the dual plate 1143 and the back plate 1144. In addition, as shown in fig. 7, a through hole 1141a having a diameter of Φm may be formed in the pressure surface of the piston 1141 for connecting the piston chamber 36 formed by the pressure surface of the piston 1141 and the mask wheel 112, and the back pressure chamber 37 on the other side of the piston 1141. When the oil pressure of the lock is raised, a part of the lock oil is discharged through the through hole 1141a, so that the pressure pulse value at the lock moment is reduced, the starting acceleration of the piston 1141 is slowed down, and the combined impact degree of the piston 1141 is further reduced. Meanwhile, during pressure relief, high-pressure oil in the piston cavity 36 can be separated into two paths through a torque converter locking oil path and a through hole 1141a in the piston 1141 for oil relief, so that the unlocking speed and unlocking efficiency of the clutch are improved.

The housing module 2 comprises a front housing module 21 for accommodating the torque converter module 1 and a rear housing module 22 for accommodating the power take-off module 4. The front end of the front housing module 21 is sleeved outside the cover wheel 112 and is connected with the cover wheel 112, the rear end is connected with the rear housing module 22, a first mounting cavity is formed between the front end and the rear end of the front housing module 21 and is used for accommodating the torque converter module 1, and a second mounting cavity is formed between a baffle ring area at the rear end of the front housing module 21 and the rear housing module 22 and is used for accommodating various components and the like of the power taking module 4. The shell module 2 adopts split type shell design, and the inner chamber of front shell module 21 holds torque converter module 1, forms the dry area of torque converter assembly, and the rear portion of front shell module 21 and rear shell module 22 are used for placing power take-off module 4, hold lubricating fluid, form the wet area of torque converter assembly, have improved the assembly convenience of torque converter assembly.

The power take-off module 4 comprises a sun gear 51, a drive gear 52, a second support bearing 53, a support shaft 54 and a lock bolt 55. The sun gear 51 is fixedly connected with the pump wheel module 13 and rotates in the same speed and direction as the pump wheel module 13, the driving gear 52 is arranged on the supporting shaft 54 through the second supporting bearing 53, the driving gear 52 is meshed with the sun gear 51, the supporting shaft 54 is connected with the rear housing module 22 through the locking bolt 55, and the driving gear 52 can rotate around the second supporting bearing 53. Because the sun gear 51 and the driving gear 52 can be engaged to transfer power, the power is transferred through the input end cover 111, the cover wheel 112, the pump wheel module 13, the sun gear 51, the driving gear 52 and the spline housing to perform power output, so that torque split transmission is realized. In addition, as shown in fig. 8, as an eccentric installation schematic diagram of the support shaft 54, a first threaded hole is axially provided in the support shaft 54, a second threaded hole is provided in the rear housing module 22, a locking bolt 55 is installed in the first threaded hole and the second threaded hole, the support shaft 54 is connected to the rear housing module 22, an axial deviation is provided between an axis of an outer wall surface of the support shaft 54 and an axis of the first threaded hole, an axial deviation is provided between an axis of the first threaded hole and an axis of the second threaded hole, and the axial deviation is M. The support shaft 54 is installed in an eccentric design, so that the problems of loosening of the locking bolt 55 caused by frequent torque fluctuation of the power take-off gear and premature wear of the support shaft 54 caused by rotation of the support shaft 54 can be prevented.

The power transmission module 5 includes a pulley mount 41, a turbine shaft 42, a lock nut 43, and an output flange 44. The guide wheel seat 41 is fixed to the rear housing module 22 so as not to rotate. The output flange 44 is fixed on the turbine shaft 42 through a lock nut 43, the turbine shaft 42 is mounted on the rear housing module 22 through a third support bearing 54, the third support bearing 54 is mounted on the rear housing module 22, and the pump wheel module 13 is mounted on the guide wheel seat 41 through a fourth support bearing 222 so as to be freely rotatable. The turbine shaft 42 and the output flange 44 are freely rotatable as power input and output modules.

The guide wheel module 15 is supported on the guide wheel seat 41 through the fifth support bearing 153 and the one-way clutch 152, and can realize one-way rotation and reverse locking functions of the guide wheel module 15, thereby realizing a torque conversion function of the torque converter. The pump wheel module 13 and the guide wheel module 15 are axially restrained by shaft shoulders and circlips. The guide wheel seat 41 is provided with a first check ring 6 and a second check ring 7, the guide wheel seat 41 is provided with a first circumferential limit step, a second circumferential limit step and a third circumferential limit step, the first check ring 6 is propped against the first limit step, the second check ring 7 is propped against the third circumferential limit step, the fifth support bearing 153 is propped against the first check ring 6 and the second circumferential limit step respectively, the rear end of the guide wheel seat 41 is propped against the rear shell module 22, and the second check ring 7 is propped against the pump wheel module 13.

The torsional damper module 12 in the torque converter module 1 is located between the cover wheel module 11 and the turbine module 14, the torsional damper module input 121 may be connected by way of a spline to the friction plate 1142, and the torsional damper module output 122 may be connected by way of a spline to the output of the turbine module 14.

As shown in fig. 2, the turbine module 14 includes a turbine 141 and a turbine hub 142, the turbine module 14 is located between the shroud module 11 and the stator module 15, and is radially supported on the turbine shaft 42 by spline connection, the turbine hub 142 is mounted with a baffle 8 having a thickness Δk, a first axial gap having a gap Δt is formed between the right side of the input end cover 111 and the left side of the first support bearing 113, the turbine module 14 is axially constrained, and a movement gap of the turbine shaft 42 having a Δt- Δk is formed.

When the piston 1141 moves rightward, the friction plate 1142, the pair of plates 1143, the piston 1141 and the back plate 1144 are pressed, and power is output through the input end cover 111, the cover wheel 112, the pair of plates 1143, the friction plate 1142, the torsional damper module 12, the turbine shaft 42 and the output flange 44. When the lockup clutch module 114 is not locked, power is output through the input end cover 111, the shroud wheel 112, the pump wheel module 13, the turbine module 14 (the stator module 15), the turbine shaft 42, and the output flange 44.

In other embodiments of the present application, the connection between the specific structures described above may be replaced by other connection methods. In addition, in the two oil paths of the hydraulic control unit, the specific setting positions and the specific oil path paths can be adjusted according to actual needs, and the hydraulic control unit is not limited.

The hydraulic torque converter transmission system provided by the application can realize the following functions:

(1) Force taking mode:

the sun gear 51 and the driving gear 52 are meshed through gears and perform power transmission, and power from a power source sequentially passes through the input end cover 111, the cover wheel 112, the pump wheel module 13, the sun gear 51 and the driving gear 52 to perform power output, so that torque split transmission is realized.

(2) Torque conversion mode of operation

The lockup clutch module 114 does not build pressure, the dual plate 1143 and the friction plate 1142 are not combined, power from a power source sequentially passes through the input end cover 111, the cover wheel 112, the pump wheel module 13, the turbine module 14, the turbine shaft 42 and the output flange 44 to carry out power output, the pump wheel module 13 pressurizes and accelerates the oil in the cavity of the torque converter module 1, then discharges the oil from the outlet of the pump wheel 131, and then enters and exits from the inlet of the turbine 141 to push the turbine 141 to rotate, the oil circulates in the cavity of the turbine 141 and then discharges the oil from the outlet of the turbine 141 to enter the guide wheel 151, and the guide wheel 151 is limited by the unidirectional locking function of the unidirectional clutch 152 and cannot rotate, so that the hydraulic force is reacted on the blades of the turbine 141 to amplify the moment, and the torque conversion function is realized.

As shown in fig. 5, under the torque-converting condition, the turbine module 14 receives an axial force towards the right side, the turbine module 14 moves axially towards the right side along the turbine shaft 42, the baffle 8 contacts with the first support bearing 113, the axial limiting is completed, the turbine module 14 forms a dimensional chain relationship through the baffle 8, the first support bearing 113, the cover wheel 112 and the pump wheel 131, at this time, the theoretical clearance of the oil outlet 17 between the turbine module 14 and the guide wheel module 15 is Δn, and the turbine module 14, the pump wheel module 13 and the guide wheel module 15 form a complete cycle to perform torque-converting operation.

(3) Locking direct drive mode

When the hydraulic control unit module 3 receives a locking command, the locking valve is opened, the locking oil passage passes through the locking clutch oil passage, the rear housing module locking oil passage 32, the turbine shaft locking oil passage 33, the input end cover locking oil passage 34, the cover wheel locking oil passage 35, and the piston cavity 36, so that the piston 1141 is pushed to move rightward against the hydraulic centrifugal force, gaps among the friction plate 1142, the pair of plates 1143 and the back plate 1144 are eliminated, the cover wheel 112 and the torsional damper module 12 are tightly pressed, power from the power source passes through the input end cover 111, the cover wheel 112, the pair of plates 1143, the friction plate 11423, the torsional damper, the turbine shaft 42 and the output flange 44 to perform power output. To verify the effectiveness of the present application, the transmission system of the present application was compared to the comparative embodiment of the existing set-up adjustment pad. As shown in fig. 3, a partial schematic view of the vicinity of the piston in the comparative embodiment is shown.

In the comparative embodiment, the turbine module 014 includes a turbine 0141, a turbine hub 0142 and a locking disc 0143, the turbine 0141, turbine hub 0142 and locking disc 0143 being fixedly connected, not relatively rotatable or axially movable. The right end face of the lock plate 0143 is bonded to the left end face of the turbine shaft 042, and the turbine module 014 is fixed to the left end face of the turbine shaft 042. Since the turbine shaft 042 has a large number of dimension chain elements from the left end face to the left end face of the pump impeller module, in order to ensure the axial position accuracy of the turbine module 014, the pump impeller module and the guide wheel module, a theoretical gap of Δj is reserved between the right end face of the locking disc 0143 and the left end face of the turbine shaft 042, and when the turbine shaft is assembled, the axial position accuracy of the turbine module 014 is ensured by setting the adjusting gasket 010 to perform gap adjustment. The locking disc 0143 and the adjustment washer 010 are fixed to the turbine shaft 042 by means of locking bolts 09.

As shown in fig. 9, a ratio and efficiency comparison of the transmission system of the present application with a comparison embodiment is shown. As shown in fig. 10, a plot of the latching pressure response of the transmission system of the present application versus the comparative embodiment is shown. As can be seen from fig. 9 and 10, the transmission system of the present application has significant advantages.

The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (10)

1. A hydraulic torque converter transmission system comprises a torque converter module (1), a shell module (2), a hydraulic control unit module (3), a force taking module (4) and a power transmission module (5); the torque converter module (1) comprises a cover wheel module (11), a pump wheel module (13), a turbine module (14) and a guide wheel module (15); the power transmission module (5) comprises a turbine shaft (42); the turbine module (14) comprises a turbine (141) and a turbine hub (142), the turbine (141) being mounted on a turbine shaft (42) by means of the turbine hub (142); the cover wheel module (11) comprises an input end cover (111) and a cover wheel (112) which are connected; the method is characterized in that: also comprises a baffle (8);

the input end cover (111), the cover wheel (112) and the pump wheel module (13) are fixedly connected;

the cover wheel module (11) further comprises a first support bearing (113), the first support bearing (113) is arranged between the cover wheel (112) and the turbine hub (142), an annular groove is formed in the end face, which abuts against the first support bearing (113), of the input end cover (111), the annular groove penetrates through an inner hole of the input end cover (111), and a first axial gap is formed between the bottom of the annular groove and the first support bearing (113);

the baffle (8) is mounted on the turbine hub (142), and the baffle (8) is positioned in the first axial gap and is used for axially restraining the turbine (141) and the turbine hub (142).

2. The torque converter transmission system of claim 1, wherein: the housing module (2) comprises a front housing module (21) and a rear housing module (22);

the front end of the front shell module (21) is sleeved outside the cover wheel (112) and connected with the cover wheel (112), and the rear end of the front shell module is connected with the rear shell module (22); a first mounting cavity is formed between the front end and the rear end of the front shell module (21) and is used for accommodating the torque converter module (1); a second mounting cavity is formed between the rear end of the front shell module (21) and the rear shell module (22) and is used for accommodating the power taking module (4).

3. The torque converter transmission system of claim 2, wherein: the power take-off module (4) comprises a sun gear (51), a driving gear (52), a second support bearing (53), a support shaft (54) and a locking bolt (55);

the sun gear (51) is fixedly connected with the pump wheel module (13);

the driving gear (52) is arranged on the supporting shaft (54) through a second supporting bearing (53), and the driving gear (52) is meshed with the central gear (51);

the support shaft (54) is connected to the rear housing module (22) by means of a locking screw (55).

4. The torque converter transmission system of claim 3, wherein: the support shaft (54) is provided with a first threaded hole along the axial direction, and the rear shell module (22) is provided with a second threaded hole;

the locking bolt (55) is arranged in the first threaded hole and the second threaded hole, and the supporting shaft (54) is connected with the rear shell module (22);

an axial deviation is arranged between the axis of the outer wall surface of the support shaft (54) and the axis of the first threaded hole, and an axial deviation is arranged between the axis of the first threaded hole and the axis of the second threaded hole.

5. The torque converter transmission system of claim 4, wherein: the cover wheel module (11) further comprises a lockup clutch module (114), wherein the lockup clutch module (114) comprises a piston (1141), a back plate (1144), at least two friction plates (1142) and at least two pair of plates (1143);

the backboard (1144) is fixed on the cover wheel (112);

the piston (1141) is arranged in the cover wheel (112), a piston cavity (36) is formed between the pressure surface of the piston (1141) and the cover wheel (112), a through hole (1141 a) is formed in the piston (1141), and the through hole (1141 a) is communicated with the piston cavity (36) and a back pressure cavity (37) of the piston (1141);

the dual plates (1143) and the friction plates (1142) are arranged between the piston (1141) and the back plate (1144) and are used for realizing axial rotation constraint on the cover wheel (112); the friction plate (1142) and the dual plate (1143) are arranged at intervals, and the friction plate (1142) is positioned at the outer side.

6. The torque converter transmission system of claim 5, wherein: the power transmission module (5) further comprises a guide wheel seat (41), a turbine shaft (42), a locking nut (43) and an output flange plate (44);

the guide wheel seat (41) is fixed on the rear shell module (22);

the output flange (44) is fixed on the turbine shaft (42) through a lock nut (43);

the turbine shaft (42) is arranged on the rear shell module (22) through a third supporting shaft (54), and the third supporting shaft (54) is arranged on the rear shell module (22);

the pump wheel module (13) is mounted on the guide wheel seat (41) through a fourth support bearing (222).

7. The torque converter transmission system of claim 6, wherein: the device also comprises a first check ring (6) and a second check ring (7) which are arranged on the guide wheel seat (41);

the guide wheel module (15) is supported on the guide wheel seat (41) through a fifth support bearing (153) and a one-way clutch (152); the guide wheel seat (41) is provided with a first circumferential limit step, a second circumferential limit step and a third circumferential limit step, the first check ring (6) is propped against the first limit step, and the second check ring (7) is propped against the third circumferential limit step; the fifth supporting bearing (153) is respectively propped against the first check ring (6) and the second circumferential limiting step;

the rear end of the guide wheel seat (41) is propped against the rear shell module (22);

the second check ring (7) is propped against the pump wheel module (13).

8. The torque converter transmission system of claim 7, wherein: the torque converter module (1) further comprises a torsional damper module (12);

the torsional damper module (12) is positioned between the cover wheel module (11) and the turbine module (14); the torsional damper module (12) has an input connected to the friction plate (1142) and an output connected to the output of the turbine module (14).

9. The torque converter transmission system of claim 8, wherein: the hydraulic control unit module (3) comprises a locking oil circuit;

the locking oil circuit comprises a hydraulic control unit locking oil circuit (31), a rear shell module locking oil circuit (32), a turbine shaft locking oil circuit (33), an input end cover locking oil circuit (34) and a cover wheel locking oil circuit (35) which are communicated in sequence, and the cover wheel locking oil circuit (35) is communicated with the piston cavity (36).

10. The torque converter transmission system of claim 9, wherein: the hydraulic control unit module (3) further comprises a hydraulic oil circuit;

the hydraulic oil way comprises a guide wheel (151) diameter annular oil way, an annular oil way between a guide wheel seat (41) and a turbine shaft (42), a guide wheel seat (41) oil return oil way, a rear shell module (22) oil return oil way, a main oil way, a rear shell module (22) oil inlet oil way, a guide wheel seat (41) oil inlet oil way and a pump wheel (131) hub oil inlet oil way which are communicated in sequence, wherein the main oil way is communicated with external hydraulic oil, and the pump wheel (131) hub oil inlet oil way is communicated with a torque converter cavity;

the diameter ring surface oil way of the guide wheel (151) is communicated with the torque converter cavity, and the oil return oil way of the rear shell module (22) is communicated with the outside.