CN113639033B

CN113639033B - Gearbox oil circuit system and gearbox

Info

Publication number: CN113639033B
Application number: CN202111213748.6A
Authority: CN
Inventors: 宋廷彬; 李法友; 赵培龙; 张广瀚; 刘敦宁; 王硕; 黄友宾
Original assignee: Shengrui Transmission Co Ltd
Current assignee: Shengrui Transmission Co Ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-02-08
Anticipated expiration: 2041-10-19
Also published as: CN113639033A

Abstract

The utility model relates to an automatic transmission technical field especially relates to a gearbox oil piping system and gearbox, and this gearbox oil piping system includes first oil circuit, the second oil circuit of seting up on the transmission shaft, the third oil circuit of seting up on the output shaft that set up on the input shaft, backup pad and supporting seat, backup pad fixed mounting is on the inner wall of gearbox casing, be equipped with the intercommunication in the backup pad first oil circuit with the sixth oil circuit of second oil circuit, the supporting seat includes first supporting seat and second supporting seat, first supporting seat sets up in the backup pad to support the transmission shaft, be equipped with the intercommunication on the first supporting seat sixth oil circuit with the fourth oil circuit of second oil circuit. The system can enable the supporting plate to serve as one section of oil way in the whole oil way system while supporting parts inside the gearbox by arranging the sixth oil way and the first supporting seat on the supporting plate.

Description

Gearbox oil circuit system and gearbox

Technical Field

The disclosure relates to the technical field of automatic transmissions, in particular to a transmission oil way system and a transmission.

Background

The automobile gearbox is a set of speed changing devices used for coordinating the rotating speed of an engine and the actual running speed of wheels, and is used for exerting the optimal performance of the engine. The gearbox can generate different gear ratios between an engine and wheels in the running process of the automobile, so that the transmission of different gear rotating speeds is realized.

The manual gearbox mainly comprises gears and a rotating shaft, and the speed change and torque change are generated by different gear combinations; the automatic gearbox AT consists of a hydraulic torque converter, a planetary gear and a hydraulic control system, and achieves the purposes of speed and torque changing through a hydraulic transmission and gear combination mode.

The automatic gearbox has the advantages of comfortable driving, capability of reducing fatigue of a driver and the like, and becomes a development direction of the configuration of modern cars. The automatic gearbox utilizes a planetary gear mechanism to change speed, can automatically change speed according to the degree of an accelerator pedal and the change of vehicle speed, and a driver only needs to operate the accelerator pedal to control the vehicle speed, so that the driver can watch road traffic with full attention without being confused by gear shifting.

The oil circuit system is one of the most important systems of the automatic gearbox, the efficiency of cooling and lubricating work of the whole gearbox is concerned, and each corner in the whole gearbox is covered, but the volume of the current automatic gearbox is severely limited, meanwhile, the requirement of a customer is more complicated when the internal structure is followed, the complicated oil circuit system is difficult to obtain a sufficient arrangement space, the oil circuit system used at present is mostly an oil pipe structure arranged in a shell, the oil circuit system is difficult to design, the oil circuit system and other structures in the gearbox have more conflict positions, the assembly work of the gearbox is more difficult, and the maintenance work in the later period of the gearbox is more difficult to perform.

Disclosure of Invention

In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides a transmission oil circuit system and a transmission.

In a first aspect, the present disclosure provides a gearbox oil circuit system, which includes a first oil circuit provided on an input shaft, a second oil circuit provided on a transmission shaft, a third oil circuit provided on an output shaft, a support plate and a support seat, wherein the support plate is fixedly mounted on an inner wall of a gearbox housing, a sixth oil circuit communicated with the first oil circuit and the second oil circuit is provided on the support plate, the support seat includes a first support seat and a second support seat, the first support seat is provided on the support plate and supports the transmission shaft, a fourth oil circuit communicated with the sixth oil circuit and the second oil circuit is provided on the first support seat, the second support seat is mounted on the gearbox housing and supports the input shaft, and a fifth oil circuit communicated with the first oil circuit and the third oil circuit is provided on the second support seat.

Optionally, a through hole matched with the input shaft is formed in the supporting plate, a stator shaft is sleeved on the input shaft and is mounted at the through hole, a seventh oil path is arranged on the stator shaft, and the seventh oil path is communicated with the sixth oil path and the first oil path.

Optionally, an eighth oil passage is provided between the support plate and the transmission case, and the eighth oil passage is communicated with the sixth oil passage.

Optionally, the eighth oil path is of an oil groove structure, and two side surfaces of the oil groove structure are respectively a side surface of the support plate and an inner wall of the transmission case.

Optionally, a first gap is left between the fifth oil path and the first oil path, a diameter of the first gap is larger than diameters of the first oil path and the fifth oil path, a second gap is left between the fifth oil path and the third oil path, and a diameter of the second gap is larger than diameters of the third oil path and the fifth oil path.

Optionally, the first gap is communicated with the second support seat to support the support structure of the input shaft, and the second gap is communicated with the transmission case to support the support structure of the output shaft.

Optionally, the input shaft and the planetary gear sets on the transmission shaft are limited in axial movement by thrust bearings, and all the thrust bearings are correspondingly arranged at the outlet of the first oil path and the outlet of the second oil path.

Optionally, an outer hub of the brake in the gearbox is provided with a closed tooth section, and the closed tooth section is provided with an oil pipeline.

Optionally, the outlets of the first oil path, the second oil path and the third oil path are all provided with an open structure.

In a second aspect, the present disclosure provides a gearbox comprising a gearbox oil circuit system as described above.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the gearbox oil circuit system provided by the disclosure can be used for supporting parts in a gearbox by arranging the sixth oil circuit and the first supporting seat on the supporting plate, and can also be used as one section of oil circuit in the whole oil circuit system, and the sixth oil circuit is the internal structure of the supporting plate, so that the arrangement of other parts on the peripheral side is not influenced, the supporting plate is used as a device for supporting the transmission shaft, the processing difficulty of the gearbox shell can be reduced, the flatness of the gearbox shell at the position where the supporting plate is arranged can be improved, the strength of the gearbox shell can be improved, the maintenance work at the later stage can be finished by maintaining or replacing the supporting plate, the arrangement of the second supporting seat can be used, the supporting stability of an input shaft is improved, the working stability of the input shaft is ensured, and the first oil circuit and the third oil circuit can be communicated through the fifth oil circuit, the main oil way main channel is communicated and smoothly runs, and the high efficiency of the cooling and lubricating work of the gearbox is ensured.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of a transmission oil system according to an embodiment of the present disclosure;

FIG. 2 is an enlarged view of a portion of a transmission oil system according to an embodiment of the present disclosure;

FIG. 3 is an enlarged view of a portion of a transmission oil system according to an embodiment of the present disclosure at B;

FIG. 4 is a schematic structural diagram of a support plate in an oil circuit system of a transmission according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a brake in a transmission oil system according to an embodiment of the disclosure.

Wherein, 1, an input shaft; 2. a drive shaft; 3. an output shaft; 4. a transmission housing; 5. a support plate; 6. a stator shaft; 71. a first gap; 72. a second gap; 8. an open structure; 9. a planetary gear set; 91. a thrust bearing; 10. a brake; 101. closing the tooth section; 11. a first oil passage; 12. a second oil passage; 13. a third oil passage; 14. a fourth oil passage; 15. a fifth oil passage; 16. a sixth oil passage; 17. a seventh oil passage; 18. an eighth oil passage; 19. a high-pressure oil path; 20. a piston; 21. a spring; 22. a first slit; 23. a second slit; 24. high-pressure clearance oil circuit.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

Based on this, the present embodiment provides a gearbox oil circuit system and a gearbox, which can make the support plate support the parts inside the gearbox by setting the sixth oil circuit and the first support seat on the support plate, and can also serve as one of the oil circuits in the whole oil circuit system, and the sixth oil circuit is the internal structure of the support plate, and will not affect the arrangement of the parts on other peripheral sides, where the support plate is used as a device for supporting the transmission shaft, which can also reduce the processing difficulty of the gearbox housing, and can also improve the flatness of the gearbox housing at the position where the support plate is set, thereby improving the strength of the gearbox housing, and the maintenance work at the later stage can be completed by repairing or replacing the support plate, and can also improve the support stability of the input shaft by setting the second support seat, thereby ensuring the stable work of the input shaft, and the first oil way and the third oil way can be communicated through the fifth oil way, a main oil way main channel is communicated and smoothly runs, and the high efficiency of cooling and lubricating work of the gearbox is ensured. This is illustrated in detail by the following specific examples:

referring to fig. 1 to 5, the transmission oil path system provided in this embodiment includes a first oil path 11 formed on an input shaft 1, a second oil path 12 formed on a transmission shaft 2, a third oil path 13 formed on an output shaft 3, a support plate 5 and a support seat, where the support plate 5 is fixedly installed on an inner wall of a transmission case 4, the support plate 5 is provided with a sixth oil path 16 communicating the first oil path 11 and the second oil path 12, the support seat includes a first support seat 31 and a second support seat 32, the first support seat 31 is disposed on the support plate 5 and supports the transmission shaft 2, the first support seat 31 is provided with a fourth oil path 14 communicating the sixth oil path 16 and the second oil path 12, the second support seat 32 is installed on the transmission case 4 and supports the input shaft 1, and the second support seat 32 is provided with a fifth oil path 15 communicating the first oil path 11 and the third oil path 13.

Through set up of seting up sixth oil circuit 16 and first supporting seat 31 on backup pad 5, make backup pad 5 when playing the supporting role for the inside part of gearbox, can also act as one of them section oil circuit among the whole oil piping system, and sixth oil circuit 16 is backup pad 5's inner structure, can not influence the part arrangement of other week sides, here uses backup pad 5 as the device that supports transmission shaft 2, also can reduce gearbox housing 4's the processing degree of difficulty, also can improve gearbox housing 4 simultaneously and set up the roughness of backup pad 5 department and then improve gearbox housing 4's intensity, the maintenance work at later stage here also can all be accomplished through maintenance or change backup pad 5.

With reference to fig. 1 and 3, the second support seat 32 is arranged, so that the support stability of the input shaft 1 is improved, the stability of the operation of the input shaft 1 is ensured, the first oil path 11 and the third oil path 13 can be communicated through the fifth oil path 15, the main oil path main line is communicated and smoothly operates, and the high efficiency of the cooling and lubricating operations of the gearbox is ensured.

In some embodiments, a through hole matched with the input shaft 1 is formed in the supporting plate 5, the stator shaft 6 is sleeved on the input shaft 1, the stator shaft 6 is installed at the through hole, a seventh oil path 17 is arranged on the stator shaft 6, the seventh oil path 17 is communicated with the sixth oil path 16 and the first oil path 11, through the arrangement of the stator shaft 6, the first oil path 11 and the sixth oil path 16 are more conveniently communicated, the seventh oil path 17 can transfer oil holes in the first oil path 11 to oil holes in a plurality of different positions of the sixth oil path 16, then oil bodies are conveyed to more positions to complete cooling and lubricating work, the contact area of the supporting plate 5 and the contact area of the input shaft 1 can also be increased by the stator shaft 6, and the supporting work of the supporting plate 5 is more stable and reliable.

In a further embodiment, an eighth oil path 18 is provided between the support plate 5 and the transmission case 4, the eighth oil path 18 is communicated with the sixth oil path 16, the eighth oil path 18 is of an oil tank structure, two side surfaces of the oil tank structure are respectively a side surface of the support plate 5 and an inner wall of the transmission case 4, the eighth oil path 18 is provided between a gap between the support plate 5 and the transmission case 4, and the oil tank structure of the eighth oil path 18 is added, so that when the support plate 5 is taken out, the inside of the eighth oil path 18 can be exposed, that is, the eighth oil path 18 is of an external oil path structure, and therefore, the processing, installation and cleaning are more convenient.

As shown in fig. 1 and 3, a first gap 71 is left between the fifth oil path 15 and the first oil path 11, the diameter of the first gap 71 is larger than the diameters of the first oil path 11 and the fifth oil path 15, a second gap 72 is left between the fifth oil path 15 and the third oil path 13, and the diameter of the second gap 72 is larger than the diameters of the third oil path 13 and the fifth oil path 15, so that the first gap 71 and the second gap 72 can form a laval nozzle structure at the opening of the first oil path 11 and the third oil path 13 on the side of the second support seat 32, thereby accelerating the outflow of oil bodies and improving the smoothness of the entire oil path circulation, and it should be noted that the first gap 71 is formed by the second support seat 32 supporting the input shaft 1, and the second gap 72 is formed by the inner wall opening of the transmission case 4 on which the second support seat 32 is mounted.

During the concrete implementation, first clearance 71 intercommunication second supporting seat 32 is used for supporting the bearing structure of input shaft 1, nested the copper sheathing of cup jointing on input shaft 1 on the second supporting seat 32, the oil body of first clearance 71 department can cool off and lubricate for the copper sheathing, the life of extension copper sheathing, reduce between input shaft 1 and the copper sheathing and the wearing and tearing between copper sheathing and the second supporting seat 32, second clearance 72 intercommunication gearbox housing 4 is used for supporting the bearing structure of output shaft 3, output shaft 3 passes through the bearing and installs on gearbox housing 4's inner wall, the oil body through in the second clearance 72 can be for supporting the bearing lubrication and the cooling of output shaft 3, the life of the bearing of extension here, can also improve the output efficiency of whole gearbox.

Continuing to refer to fig. 1 and fig. 2 and showing, planetary gear set 9 on input shaft 1 and the transmission shaft 2 all limits its axial displacement through footstep bearing 91, the setting that all footstep bearings 91 all correspond is in the exit of first oil circuit 11 and the exit of second oil circuit 12, because the cover is equipped with many parts on input shaft 1 and the transmission shaft 2, and set up on input shaft 1 and the transmission shaft 2 and mostly these parts provide lubricated and refrigerated oil outlet, through set up footstep bearing 91 in oil outlet department, not only can make the oil outlet on input shaft 1 and the transmission shaft 2 accomplish oil outlet work smoothly, can also in time provide the lubrication for footstep bearing 91 that supports planetary gear set 9.

Continuing to refer to fig. 1 and 5, be equipped with on the outer hub of stopper 10 in the gearbox and seal tooth section 101, seal tooth section 101 department, because the tooth of stopper 10 can do partial tooth processing of going, can avoid stopper 10 influence oil piping's arrangement effectively through the setting of seal tooth section 101, although most oil circuits in this scheme all concentrate on the axis body, bearing structure and each part, but still have partial pipeline structure's oil circuit, can make things convenient for oil piping's arrangement and design more through the setting of seal tooth section 101, and simultaneously, through the setting of seal tooth section 101, can make here form great oil circuit clearance, lubrication cooling efficiency to friction disc and whole stopper also can realize increasing substantially.

As shown in fig. 1, 2 and 4, the support plate 5 is provided with a high-pressure oil path 19, the high-pressure oil path 19 is communicated with a seventh oil path 17 on the stator shaft 6, one branch of the seventh oil path 17 is communicated with the high-pressure oil path 19 by a high-pressure clearance oil path 24 between the stator shaft 6 and the input shaft 1, and is communicated with one side of a piston 20 of the clutch by another seventh oil path 17 on the stator shaft 6, and the work of combining and separating the clutch is completed by an oil body of the high-pressure oil path 19 and a spring 21 of the clutch.

Continuing to refer to fig. 3, first oil circuit 11, second oil circuit 12 and third oil circuit 13 three's exit all is equipped with open structure 8, because input shaft 1, can the cover be equipped with on transmission shaft 2 and the output shaft 3 and need lubricated and refrigerated part, just also can correspond set up a plurality of oil circuit exports that are used for lubricated and cooling near part on first oil circuit 11, second oil circuit 12 and third oil circuit 13, through processing out open structure 8 in the exit of oil circuit, can make the oil body more easily flow out from the main oil circuit, improve the cooling and the lubrication efficiency of gearbox.

Continuing to refer to fig. 1, the transmission shaft 2 is a multi-section shaft body, and gaps are provided at joints of the shaft bodies, in fig. 1, the first gap 22 and the second gap 23 can throw out oil bodies in the second oil path 12 by rotation of the transmission shaft 2, and perform cooling and lubricating operations on bearings and other parts at the first gap 22 and the second gap 23, it should be noted that not only the gaps on the transmission shaft 2 can achieve this effect, but also the same structure on the input shaft 1 and the output shaft 3 can achieve this effect.

The present disclosure also provides a gearbox comprising an oil circuit system as described above.

The specific implementation manner and the implementation principle are the same as those of the above embodiment, and the same or similar technical effects can be brought, and therefore, the details are not repeated herein, and reference may be made to the description of the embodiment of the transmission oil circuit system.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gearbox oil circuit system is characterized by comprising a first oil circuit (11) arranged on an input shaft (1), a second oil circuit (12) arranged on a transmission shaft (2), a third oil circuit (13) arranged on an output shaft (3), a support plate (5) and a support seat, wherein the support plate (5) is fixedly arranged on the inner wall of a gearbox shell (4), a sixth oil circuit (16) communicated with the first oil circuit (11) and the second oil circuit (12) is arranged on the support plate (5), the support seat comprises a first support seat (31) and a second support seat (32), the first support seat (31) is arranged on the support plate (5) and supports the transmission shaft (2), a fourth oil circuit (14) communicated with the sixth oil circuit (16) and the second oil circuit (12) is arranged on the first support seat (31), and the second support seat (32) is arranged on the gearbox shell (4), and the input shaft (1) is supported, a fifth oil way (15) which is communicated with the first oil way (11) and the third oil way (13) is arranged on the second support seat (32), a first gap (71) is reserved between the fifth oil way (15) and the first oil way (11), the diameter of the first gap (71) is larger than that of the first oil way (11) and the fifth oil way (15), a second gap (72) is reserved between the fifth oil way (15) and the third oil way (13), and the diameter of the second gap (72) is larger than that of the third oil way (13) and the fifth oil way (15).

2. The gearbox oil circuit system according to claim 1, characterized in that a through hole matched with the input shaft (1) is formed in the support plate (5), a stator shaft (6) is sleeved on the input shaft (1), the stator shaft (6) is installed at the through hole, a seventh oil circuit (17) is arranged on the stator shaft (6), and the seventh oil circuit (17) is communicated with the sixth oil circuit (16) and the first oil circuit (11).

3. The transmission oil passage system according to claim 1, characterized in that an eighth oil passage (18) is provided between the support plate (5) and the transmission case (4), the eighth oil passage (18) communicating with the sixth oil passage (16).

4. The transmission oil passage system according to claim 3, wherein the eighth oil passage (18) is of an oil groove structure having both side surfaces of the support plate (5) and an inner wall of the transmission case (4), respectively.

5. The gearbox oil circuit system according to claim 1, characterized in that the first gap (71) communicates with the second support seat (32) for supporting a support structure of the input shaft (1), and the second gap (72) communicates with a support structure of the gearbox housing (4) for supporting the output shaft (3).

6. The gearbox oil circuit system according to claim 1, characterized in that the planetary gear sets (9) on the input shaft (1) and the transmission shaft (2) are each limited in their axial movement by thrust bearings (91), all the thrust bearings (91) being provided at the outlet of the first oil circuit (11) and at the outlet of the second oil circuit (12) respectively.

7. The gearbox oil way system according to the claim 1, characterized in that a closed tooth section (101) is arranged on an outer hub of the brake (10) in the gearbox, and an oil way pipeline is arranged at the closed tooth section (101).

8. The gearbox oil circuit system according to claim 1, characterized in that the outlets of the first oil circuit (11), the second oil circuit (12) and the third oil circuit (13) are all provided with an open structure (8).

9. A gearbox comprising a gearbox oil system according to any one of claims 1 to 8.