Method for assembling a gearbox of a hybrid vehicle

Abstract

The present disclosure relates to the technical field of power assemblies of hybrid vehicles, and particularly relates to an assembling method of a gearbox of a hybrid vehicle. The assembling method of the gearbox of the hybrid vehicle comprises the following steps: S1, installing an intermediate shaft on a main housing assembly, then sleeving a transmission mechanism on the intermediate shaft and installing the transmission mechanism in a first cavity of the main housing assembly; S2, measuring a first height difference between an end face of the first cavity of the main housing assembly and the transmission mechanism, continuing to measure a second height difference between a plane of a rear end cover used for abutting against the transmission mechanism and the end face, and sleeving a first adjusting gasket with a thickness corresponding to a sum of the first height difference and the second height difference on the intermediate shaft. The assembling method of the gearbox of the hybrid vehicle divides the main housing assembly into the first cavity and a second cavity, and uses the rear end cover and a front housing assembly as a way of plugging the first cavity and the second cavity respectively, so that the whole gearbox experiences two times of casing combining actions.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of power assemblies of hybrid vehicles, in particular to an assembling method of a gearbox of a hybrid vehicle. BACKGROUND

[0002] At present, the power assembly of a hybrid vehicle often places components such as a generator, a driving motor and a gear mechanism in a gearbox to form a transmission system, thereby resulting in too many internal structural parts of the gearbox.

[0003] Due to too many internal structural parts of the gearbox and machining errors of the parts during machining, the components such as the generator, the driving motor and the gear mechanism often need to be adjusted in the axial direction for multiple times by using gaskets with appropriate thicknesses to ensure the stability and reliability of the entire transmission system and prevent violent shaking during work. The number of times of adding gaskets increases with the increase of the number of internal structural parts, and the axial adjustment is too complicated, which affects the assembling efficiency of the gearbox. SUMMARY

[0004] In order to solve the above technical problems, the present disclosure provides an assembling method of a gearbox of a hybrid vehicle.

[0005] The present disclosure provides an assembling method of a gearbox of a hybrid vehicle, comprising the following steps:

[0006] S1, installing an intermediate shaft on a main housing assembly, then sleeving a gear mechanism on the intermediate shaft and installing the gear mechanism in a first cavity of the main housing assembly;

[0007] S2, measuring a first height difference between an end face of the first cavity of the main housing assembly and the gear mechanism, continuing to measure a second height difference between a plane of a rear end cover for abutting against the gear mechanism and the end face, and sleeving a first adjusting gasket with a thickness corresponding to the sum of the first height difference and the second height difference on the intermediate shaft;

[0008] S3, installing the rear end cover at the end face of the first cavity and closing the first cavity;

[0009] S4, installing a driving motor assembly in a second cavity of the main housing assembly, then installing a first planetary gear set assembly;

[0010] S5, installing a generator assembly in a front housing assembly;

[0011] S6, measuring a third height difference between an end face of the second cavity of the main housing assembly and the first planetary gear set assembly, continuing to measure a fourth height difference between an end face of the front housing assembly and the generator assembly, and sleeving a second adjusting gasket with a thickness corresponding to the sum of the third height difference and the fourth height difference on the intermediate shaft;

[0012] S7, the main housing assembly and the front housing assembly are combined, and the assembly of the gearbox is completed.

[0013] Optionally, before the first height difference is measured in S2, the transmission mechanism is pre-pressed in the first cavity in the axial direction; before the third height difference is measured in S6, the first planetary row assembly is pre-pressed towards the driving motor assembly; and before the fourth height difference is measured, the generator assembly is pre-pressed in the front housing assembly in the axial direction.

[0014] Optionally, in S1, the transmission mechanism comprises a clutch assembly, a brake connecting piece, a second planetary row and a third planetary row.

[0015] The specific steps of installing the transmission mechanism are as follows: first, the clutch assembly is arranged on the intermediate shaft, then the brake connecting piece is installed, and finally the planetary row group formed by the second planetary row and the third planetary row is installed.

[0016] Optionally, when the first height difference is measured in S2, the height difference between the plane of the third planetary row for abutting against the rear end cover and the end face of the first cavity is measured.

[0017] Optionally, in S4, the driving motor assembly comprises a driving motor rotor, a driving motor stator assembly, a driving motor partition plate assembly and a gear ring connecting piece connected with the first planetary row assembly.

[0018] The specific steps of installing the driving motor assembly are as follows: first, the driving motor rotor is installed, then the driving motor stator assembly is installed, then the driving motor partition plate assembly is installed, and finally the gear ring connecting piece and the first planetary row assembly are installed.

[0019] Optionally, when the third height difference is measured in S6, the height difference between the plane of the first planetary row assembly for abutting against the generator assembly and the end face of the second cavity is measured.

[0020] Optionally, in S5, the generator assembly comprises a generator stator assembly, a generator rotor assembly and a generator cover plate assembly.

[0021] The specific steps of installing the generator assembly are as follows: first, the generator stator assembly is installed, then the generator rotor assembly is installed, and finally the generator cover plate assembly is installed.

[0022] Optionally, when the fourth height difference is measured in S6, the height difference between the plane of the generator rotor assembly for abutting against the first planetary row assembly and the end face of the front housing assembly is measured.

[0023] Optionally, in the S2, the plane for abutting against the gear shifting mechanism of the rear end cover abuts against one end face of the first adjusting gasket, and the plane for abutting against the third planetary gear set of the rear end cover abuts against another end face of the first adjusting gasket.

[0024] Optionally, in the S6, the plane for abutting against the generator assembly of the first planetary gear set abuts against one end face of the second adjusting gasket, and the plane for abutting against the first planetary gear set of the generator rotor assembly abuts against another end face of the second adjusting gasket.

[0025] Compared with the prior art, the technical scheme provided by the embodiments of the present disclosure has the following advantages:

[0026] The assembling method of the gearbox of the hybrid vehicle provided by the present disclosure divides the main housing assembly into a first cavity and a second cavity, and uses the rear end cover and the front housing assembly to respectively block the first cavity and the second cavity, so that the entire gearbox only needs to undergo two assembly operations, and only needs to use the first adjusting gasket and the second adjusting gasket to absorb the machining errors of the parts in the first cavity and the second cavity before the two assembly operations, thereby effectively reducing the number of adjustment operations and improving the assembly efficiency of the gearbox, and ensuring the coaxiality of all parts by using the single shaft of the intermediate shaft, so that only the axial positions of the parts need to be adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.

[0028] In order to more clearly illustrate the technical schemes in the embodiments of the present disclosure or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0029] Figure 1 The process flow chart of the assembling method of the gearbox of the hybrid vehicle described in the embodiments of the present disclosure;

[0030] Figure 2 The structural schematic diagram of the gearbox of the hybrid vehicle described in the embodiments of the present disclosure.

[0031] Wherein, 1, intermediate shaft; 21, main housing assembly; 22, rear end cover; 23, front housing assembly; 31, first adjusting gasket; 32, second adjusting gasket; 41, first planetary gear set; 42, clutch assembly; 43, brake connecting piece; 44, second planetary gear set; 45, third planetary gear set; 46, drive motor rotor; 47, drive motor stator assembly; 48, drive motor partition assembly; 49, ring gear connecting piece; 410, generator stator assembly; 411, generator rotor assembly; 412, generator cover plate assembly. DETAILED DESCRIPTION

[0032] In order to enable one skilled in the art to more clearly understand the above-mentioned objects, features and advantages of the present disclosure, the schemes of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0033] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present disclosure, but the present disclosure can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present disclosure, not all the embodiments.

[0034] At present, the power assembly of the hybrid vehicle often places the components such as the generator, the drive motor and the transmission mechanism in the transmission case to form a set of transmission system, thereby causing the number of internal structural parts of the transmission case to be too large.

[0035] Due to the too large number of internal structural parts of the transmission case, and because of the machining error existing in the machining of the parts, it is often necessary to use a plurality of gaskets with appropriate thickness to adjust the axial size when installing the components such as the generator, the drive motor and the transmission mechanism, so as to ensure the stability and reliability of the entire transmission system and prevent violent shaking during work; the number of added gaskets increases with the increase of the number of internal structural parts, and the axial adjustment work is too complicated, which affects the assembly efficiency of the transmission case.

[0036] Based on this, the embodiment provides an assembly method of the transmission case of the hybrid vehicle, which divides the main housing assembly into a first chamber and a second chamber, and uses the rear end cover and the front housing assembly as the blocking means of the first chamber and the second chamber respectively, so that the entire transmission case only needs to undergo two times of case combining operation, and only needs to use the first adjusting gasket and the second adjusting gasket to absorb the machining error of the parts in the first chamber and the second chamber before the two times of case combining operation; not only can effectively reduce the number of adjustment work and improve the assembly efficiency of the transmission case, but also can use the single shaft setting of the intermediate shaft to ensure the coaxiality of all parts, so that only the axial position of each part needs to be adjusted. The following will be described in detail through specific embodiments:

[0037] Referring toFigure 1 and Figure 2 As shown in the figure, the embodiment provides an assembly method of a gearbox of a hybrid vehicle, comprising the following steps:

[0038] S1, install the intermediate shaft 1 on the main housing assembly 21, then install the transmission mechanism on the intermediate shaft 1 and in the first chamber of the main housing assembly 21;

[0039] S2, measure the first height difference between the end face of the first chamber of the main housing assembly 21 and the transmission mechanism, and continue to measure the second height difference between the plane of the rear end cover 22 used for abutting against the transmission mechanism and the end face, and install the first adjusting gasket 31 with a thickness corresponding to the sum of the first height difference and the second height difference on the intermediate shaft 1;

[0040] S3, install the rear end cover 22 at the end face of the first chamber and close the first chamber;

[0041] S4, install the drive motor assembly in the second chamber of the main housing assembly 21, and then install the first planetary gear set assembly 41;

[0042] S5, install the generator assembly in the front housing assembly 23;

[0043] S6, measure the third height difference between the end face of the second chamber of the main housing assembly 21 and the first planetary gear set assembly 41, and continue to measure the fourth height difference between the end face of the front housing assembly 23 and the generator assembly, and install the second adjusting gasket 32 with a thickness corresponding to the sum of the third height difference and the fourth height difference on the intermediate shaft 1;

[0044] S7, combine the main housing assembly 21 and the front housing assembly 23 to complete the assembly of the gearbox.

[0045] Wherein, by dividing the main housing assembly 21 into the first chamber and the second chamber, and using the rear end cover 22 and the front housing assembly 23 as the blocking of the first chamber and the second chamber respectively, the entire gearbox only needs to undergo two times of combining actions, and only needs to absorb the machining error of the parts in the first chamber and the second chamber respectively by using the first adjusting gasket 31 and the second adjusting gasket 32 before combining; not only can effectively reduce the number of adjustment work and improve the assembly efficiency of the gearbox, but also can use the single shaft setting of the intermediate shaft 1 to ensure the coaxiality of all parts, so that only the axial position of each part needs to be adjusted.

[0046] In some embodiments, before measuring the first height difference in S2, the transmission mechanism is pre-pressed in the first cavity in the axial direction; before measuring the third height difference in S6, the first planetary gear set 41 is pre-pressed towards the driving motor assembly; and before measuring the fourth height difference, the generator assembly is pre-pressed in the front housing assembly 23 in the axial direction. Through the pre-pressing operation, the amount of shaking of the internal parts of the transmission after the case closing can be further reduced, the measured values of the first height difference, the third height difference and the fourth height difference are more accurate, and the thickness of the adjusting gasket is more in line with the actual use requirements.

[0047] With reference to Figure 1 and Figure 2 , in S1, the transmission mechanism includes a clutch assembly 42, a brake connecting piece 43, a second planetary gear set 44 and a third planetary gear set 45. The specific steps of installing the transmission mechanism are as follows: first, the clutch assembly 42 is sleeved on the intermediate shaft 1, then the brake connecting piece 43 is installed, and finally the planetary gear set formed by the combination of the second planetary gear set 44 and the third planetary gear set 45 is installed.

[0048] In further embodiments, in S2, the first height difference is measured, specifically the height difference between the plane of the third planetary gear set 45 for abutting against the rear end cover 22 and the end face of the first cavity. It should be understood that the first height difference and the second height difference are measured in the same axial direction, and after the first height difference and the second height difference are measured, the positive and negative values of the two height differences in the same axial direction are determined, and the absolute value of the sum is taken. That is, the plane of the third planetary gear set 45 for abutting against the rear end cover 22 protrudes from the end face of the first cavity, at this time the first height difference can be recorded as a positive value, the plane of the rear end cover 22 for abutting against the transmission mechanism is recessed from the position of the end face, at this time the second height difference is a negative value, and the thickness of the first adjusting gasket 31 is equal to the absolute value of the sum of the first height difference and the second height difference.

[0049] In some embodiments, in S2, the plane of the rear end cover 22 for abutting against the transmission mechanism abuts against one end face of the first adjusting gasket 31, and the plane of the third planetary gear set 45 for abutting against the rear end cover 22 abuts against the other end face of the first adjusting gasket 31.

[0050] With reference to Figure 1 and Figure 2 , in S4, the driving motor assembly includes a driving motor rotor 46, a driving motor stator assembly 47, a driving motor partition plate assembly 48 and a gear ring connecting piece 49 connected with the first planetary gear set 41. The specific steps of installing the driving motor assembly are as follows: first, the driving motor rotor 46 is installed, then the driving motor stator assembly 47 is installed, followed by the installation of the driving motor partition plate assembly 48, and finally the gear ring connecting piece 49 and the first planetary gear set 41 are installed.

[0051] In some embodiments, in the S6, the third height difference is measured, specifically, the height difference between the plane of the first planetary gear set 41 for abutting against the generator set and the end face of the second cavity.

[0052] With continued reference to Figure 1 and Figure 2 shown, in the S5, the generator set comprises a generator stator set 410, a generator rotor set 411 and a generator cover set 412; the specific steps of installing the generator set are, first installing the generator stator set 410, then installing the generator rotor set 411, and finally installing the generator cover set 412.

[0053] In some embodiments, in the S6, the fourth height difference is measured, specifically, the height difference between the plane of the generator rotor set 411 for abutting against the first planetary gear set 41 and the end face of the front housing set 23; after measuring the fourth height difference, the thickness of the second adjusting gasket 32 is calculated by using the method of calculating the thickness of the first adjusting gasket 31 as described above, in the vertical of the third height difference.

[0054] In further embodiments, in the S6, the plane of the first planetary gear set 41 for abutting against the generator set abuts against one end face of the second adjusting gasket 32, and the plane of the generator rotor set 411 for abutting against the first planetary gear set 41 abuts against the other end face of the second adjusting gasket 32.

[0055] The specific implementation and implementation principles are the same as those of the above-mentioned embodiments, and can bring the same or similar technical effects, which will not be repeated here, and can be referred to the description of the above-mentioned assembly method of the gearbox of the hybrid vehicle.

[0056] It should be noted that, in this document, relational terms such as“first” and“second”, and the like, are 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. Moreover, 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 can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by“comprises a” does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0057] The foregoing is merely illustrative of the various implementations of the present disclosure and the general principles thereof. Numerous modifications can be made to these illustrations, and equivalents can be substituted therefor, without departing from the scope of the present disclosure. The specific embodiments commensurate with the specific application are intended to be illustrative only and not limiting of the scope of the application as set forth in the following claims.

Claims

1. An assembling method of a hybrid vehicle transmission, the hybrid vehicle transmission comprising a front housing assembly (23), a main housing assembly (21), and a rear end cover (22); the main housing assembly (21) is divided into a first chamber and a second chamber, and the first chamber and the second chamber are respectively blocked by the rear end cover (22) and the front housing assembly (23); the method comprising the following steps: S1, installing an intermediate shaft (1) on the main housing assembly (21), then sleeving a transmission mechanism on the intermediate shaft (1) and installing the transmission mechanism in the first chamber of the main housing assembly (21); S2, measuring a first height difference between an end face of the first chamber of the main housing assembly (21) and the transmission mechanism, then measuring a second height difference between a plane of the rear end cover (22) for abutting against the transmission mechanism and the end face, and sleeving a first adjusting gasket (31) with a thickness corresponding to a sum of the first height difference and the second height difference on the intermediate shaft (1); S3, installing the rear end cover (22) at the end face of the first chamber and closing the first chamber; S4, installing a driving motor assembly in the second chamber of the main housing assembly (21), then installing a first planetary gear set assembly (41); S5, installing a generator assembly in the front housing assembly (23); S6, measuring a third height difference between an end face of the second chamber of the main housing assembly (21) and the first planetary gear set assembly (41), then measuring a fourth height difference between an end face of the front housing assembly (23) and the generator assembly, and sleeving a second adjusting gasket (32) with a thickness corresponding to a sum of the third height difference and the fourth height difference on the intermediate shaft (1); and S7, combining the main housing assembly (21) and the front housing assembly (23) to complete the assembling of the transmission. In the S2, before the first height difference is measured, the transmission mechanism is pre-pressed in the first chamber along an axial direction; in the S6, before the third height difference is measured, the first planetary gear set assembly (41) is pre-pressed towards the driving motor assembly; and before the fourth height difference is measured, the generator assembly is pre-pressed in the front housing assembly (23) along the axial direction. characterized in that In the S1, the transmission mechanism comprises a clutch assembly (42), a brake connecting piece (43), a second planetary gear set (44), and a third planetary gear set (45); and the specific steps for installing the transmission mechanism are as follows: first, sleeving the clutch assembly (42) on the intermediate shaft (1), then installing the brake connecting piece (43), and finally installing the planetary gear set formed by the second planetary gear set (44) and the third planetary gear set (45) in combination. In the S2, when the first height difference is measured, the height difference between a plane of the third planetary gear set (45) for abutting against the rear end cover (22) and the end face of the first chamber is measured. In the S4, the driving motor assembly comprises a driving motor rotor (46), a driving motor stator assembly (47), a driving motor partition plate assembly (48), and a gear ring connecting piece (49) connected with the first planetary gear set assembly (41). ​ ​ ​ ​ ​ 2. The method of claim 1, wherein ​ 3. The method of claim 1, wherein ​ ​ 4. The method of claim 3, wherein ​ 5. The method of claim 1, wherein ​ The specific steps for installing the driving motor assembly are as follows: first, installing the driving motor rotor (46), then installing the driving motor stator assembly (47), then installing the driving motor partition plate assembly (48), and finally installing the gear ring connecting piece (49) and the first planetary gear set assembly (41).

6. The method of assembling a transmission of a hybrid vehicle according to claim 5, wherein, In the S6, the third height difference is measured, specifically the height difference between the plane of the first planetary gear set assembly (41) for abutting against the generator assembly and the end face of the second cavity.

7. The method of claim 6, wherein In the S5, the generator assembly includes a generator stator assembly (410), a generator rotor assembly (411), and a generator cover plate assembly (412); The specific steps for installing the generator assembly are as follows: first, installing the generator stator assembly (410), then installing the generator rotor assembly (411), and finally installing the generator cover plate assembly (412).

8. The method of claim 7, wherein, In the S6, the fourth height difference is measured, specifically the height difference between the plane of the generator rotor assembly (411) for abutting against the first planetary gear set assembly (41) and the end face of the front housing assembly (23).

9. The method of claim 4, wherein, In the S2, the plane of the rear end cover (22) for abutting against the transmission mechanism abuts against one end face of the first adjusting washer (31), and the plane of the third planetary gear set (45) for abutting against the rear end cover (22) abuts against the other end face of the first adjusting washer (31).

10. The method of claim 8, wherein, In the S6, the plane of the first planetary gear set assembly (41) for abutting against the generator assembly abuts against one end face of the second adjusting washer (32), and the plane of the generator rotor assembly (411) for abutting against the first planetary gear set assembly (41) abuts against the other end face of the second adjusting washer (32).

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