New energy transmission manufacturing method and new energy transmission manufactured through new energy transmission manufacturing method

Abstract

The invention belongs to the technical field of engineering machinery, and discloses a new energy transmission preparation method and a new energy transmission prepared thereof.The new energy transmission preparation method comprises the steps that on the basis of an existing conventional commercial fuel vehicle transmission, an optical axis section is arranged on an intermediate shaft, and a reverse gear idle gear on an existing reverse gear shaft is replaced with an out-of-trap gear conversion linkage gear; the diameter of a reverse gear driven gear located on the output shaft is enlarged, so that the reverse gear driven gear becomes an out-of-trap gear. The new energy transmission comprises a functional shaft located on the gearbox and a functional gear located on the functional shaft. An optical shaft section is arranged on the intermediate shaft, and a reverse gear idle gear on an existing reverse gear shaft is replaced by an out-of-trap gear conversion linkage gear; the diameter of a reverse gear driven gear located on the output shaft is enlarged, so that the reverse gear driven gear becomes an out-of-trap gear. According to the method and the structure, the research and development and production cost is reduced, and the manufacturing is easy.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering machinery, and provides a method for preparing a new energy transmission which reduces R&D and production costs and is easy to manufacture, and a new energy transmission prepared by the method. Background Art

[0002] As the market share of commercial new energy electric vehicles expands, existing transmission manufacturers are also investing a lot of R&D funds and production equipment funds in new energy transmissions. The R&D and production of new energy transmissions by existing transmission manufacturers are basically based on the needs of new energy electric vehicles. They develop new gear transmission systems, open new molds according to the design, and invest in new production line equipment. The R&D and production costs are very high and the cycle is long.

[0003] The transmission of conventional commercial fuel vehicles generally includes a gearbox, an input shaft, an intermediate shaft, an output shaft and a reverse shaft on the gearbox, transmission gears arranged on the input shaft, the intermediate shaft and the output shaft, and a gear idler gear structure located on the reverse shaft. When in use, the driver uses the operating mechanism to make the corresponding gear drive gear on the intermediate shaft mesh with the gear driven gear on the output shaft, thereby realizing power transmission. See Appendix Figure 1 and attached Figure 2 , which is an existing conventional commercial fuel vehicle five-speed transmission. The conventional commercial fuel vehicle five-speed transmission shown in the figure comprises an input shaft (2), an intermediate shaft (3), an output shaft (4) and a reverse gear shaft (5) located on a gear box (1), and gears located on each functional shaft. The two constant meshing gears (6) located on the input shaft (2) and the intermediate shaft (3) mesh with each other, a first gear drive gear (7), a second gear drive gear (8), a third gear drive gear (9), a fourth gear drive gear (10), a fifth gear drive gear (11) and a reverse gear drive gear (12) are arranged on the intermediate shaft (3), a first gear driven gear (13), a second gear driven gear (14), a third gear driven gear (15), a fourth gear driven gear (16), a fifth gear driven gear (17) and a reverse gear driven gear (18) are arranged on the output shaft (4), and a reverse gear idler gear (19) is arranged on the reverse gear shaft (5).

[0004] When the five-speed transmission with the above structure is used in conventional commercial fuel vehicles, the engine speed is about 2600 rpm. Due to the influence of the transmission center distance, it is difficult to increase the first gear ratio, and the speed ratio is basically around 7. It cannot be used in electric commercial vehicles because electric commercial vehicles need a larger speed ratio when climbing a slope or crossing a pit.

[0005] How to apply the existing conventional commercial fuel vehicle transmission to electric commercial vehicles after slightly modifying it while retaining the original layout and design to the greatest extent has always been a technical problem that is difficult for technical personnel in this field to solve. Summary of the invention

[0006] In view of this, an object of the present invention is to provide a method for preparing a new energy transmission which reduces R&D and production costs and is easy to manufacture, and a new energy transmission prepared therefrom.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention provides a method for preparing a new energy transmission. On the basis of an existing conventional commercial fuel vehicle transmission, an optical shaft section is arranged on the intermediate shaft of the existing conventional commercial fuel vehicle transmission, and the optical shaft section is located at the reverse gear drive gear of the intermediate shaft of the existing conventional commercial fuel vehicle transmission;

[0009] The reverse idler gear on the reverse shaft of the conventional commercial fuel vehicle transmission is removed, and a disengagement gear conversion coupling gear is provided on the reverse shaft, the disengagement gear conversion coupling gear comprising a front gear segment and a rear gear segment, wherein the diameter of the front gear segment is greater than the diameter of the rear gear segment;

[0010] The diameter of the reverse gear driven gear on the output shaft is enlarged to make it a relief gear.

[0011] In order to select a suitable output speed ratio according to actual needs, in the above scheme, further: the diameter of the escape gear is larger than the diameter of the reverse gear driven gear.

[0012] The present invention also provides a new energy transmission prepared according to the above-mentioned new energy transmission preparation method, comprising a functional shaft located on a gearbox, and a functional gear located on the functional shaft;

[0013] The functional shaft includes an input shaft, an intermediate shaft, an output shaft and a reverse shaft, and the functional gears include a first gear drive gear, a second gear drive gear, a third gear drive gear, a fourth gear drive gear, a fifth gear drive gear, a first gear driven gear, a second gear driven gear, a third gear driven gear, a fourth gear driven gear, a fifth gear driven gear, a relief gear conversion gear and a relief gear;

[0014] The first gear drive gear, the second gear drive gear, the third gear drive gear, the fourth gear drive gear and the fifth gear drive gear are located on the intermediate shaft;

[0015] The first gear driven gear, the second gear driven gear, the third gear driven gear, the fourth gear driven gear, the fifth gear driven gear and the escape gear are located on the output shaft;

[0016] The escape gear conversion gear is located on the reverse gear shaft, and the escape gear conversion gear comprises a front gear segment and a rear gear segment, wherein the diameter of the front gear segment is greater than the diameter of the rear gear segment;

[0017] An optical axis segment is arranged on the intermediate shaft.

[0018] The beneficial effect of the present invention is that through the above scheme, the existing conventional five-speed transmission for commercial fuel vehicles can be slightly modified and applied to electric commercial vehicles, which reduces the R&D and production costs and makes the new energy transmission easy to manufacture. Specifically, conventional transmissions are generally two-stage transmissions. It is difficult to achieve a transmission ratio of more than 10 due to the restriction of the center distance between the middle shaft and the output shaft. This patent uses the main structure of the original transmission to transform the transmission chain at the reverse idler wheel. Through three-stage transmission and increasing the diameter of the reverse output gear, the transmission ratio is increased. The speed ratio can reach 10 without affecting the main structure of the original transmission, especially the shifting mechanism, which is particularly important for saving development costs. Moreover, the new energy transmission does not require a reverse gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the structure of a five-speed transmission for a conventional commercial fuel vehicle before modification;

[0021] Figure 2 It is a schematic diagram of the kinetic energy transmission route structure of the fifth gear and reverse gear of a five-speed transmission for a conventional commercial fuel vehicle before modification;

[0022] Figure 3 It is a schematic diagram of the structure of the five-speed transmission of the present invention after modification;

[0023] Figure 4 It is a schematic diagram of the structure of the meshing position of the connecting tooth and the escape gear of the five-speed transmission of the present invention after modification;

[0024] Figure numerals: 1. gearbox; 2. input shaft; 3. intermediate shaft; 4. output shaft; 5. reverse shaft; 6. constant mesh gear; 7. first gear drive gear; 8. second gear drive gear; 9. third gear drive gear; 10. fourth gear drive gear; 11. fifth gear drive gear; 12. reverse gear drive gear; 13. first gear driven gear; 14. second gear driven gear; 15. third gear driven gear; 16. fourth gear driven gear; 17. fifth gear driven gear; 18. reverse gear driven gear; 19. reverse idler gear; 20. optical shaft section; 21. escape gear shift coupling gear; 22. escape gear; 23. front gear section; 24. rear gear section. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with specific implementation methods. The accompanying drawings are only used for exemplary descriptions and are only schematic diagrams, not actual drawings, and cannot be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0026] like Figure 1-4 As shown, the present invention provides a method for preparing a new energy transmission. On the basis of an existing conventional commercial fuel vehicle transmission, an optical shaft section 20 is provided on the intermediate shaft 3 of the existing conventional commercial fuel vehicle transmission. The optical shaft section 20 is located at the reverse gear drive gear 12 of the intermediate shaft 3 of the existing conventional commercial fuel vehicle transmission.

[0027] The reverse idler gear 19 on the reverse gear shaft 5 of the conventional commercial fuel vehicle transmission is removed, and a disengagement gear conversion coupling gear 21 is provided on the reverse gear shaft 5, the disengagement gear conversion coupling gear 21 comprising a front gear segment 23 and a rear gear segment 24, wherein the diameter of the front gear segment 23 is greater than the diameter of the rear gear segment 24;

[0028] The diameter of the reverse gear driven gear 18 located on the output shaft 4 is enlarged to make it a disengagement gear 22, and the gear ratio of the structure can reach about 10. When the new energy transmission made by this method is applied to electric vehicles, it can effectively solve the disengagement conditions such as climbing or crossing a pit. At the same time, the disengagement gear 22 should take into account the reverse gear supply, and only the direction of rotation of the motor needs to be changed. It is effectively realized that the existing conventional commercial fuel vehicle transmission is slightly modified and applied to electric commercial vehicles, which reduces the R&D and production costs, makes the new energy transmission easy to manufacture, and overcomes the technical difficulties in this field. After application, the original parts mold of the enterprise is retained to the greatest extent, effectively reducing the investment in R&D costs and production costs. It should be noted that the embodiment given in the accompanying drawings is a conventional commercial fuel vehicle five-speed transmission. The accompanying drawings are for the technical personnel in the field to understand the present scheme, and no interpretation of limiting the limitations of the present patent application scheme shall be made. This solution is applicable to old conventional fuel transmissions. As long as it has a reverse idler gear structure, it can be modified and designed using this patent to suit new energy transmissions that require a large speed ratio to get out of trouble in special periods.

[0029] In order to select a suitable output speed ratio according to actual needs, in the above embodiment, further: the diameter of the escape gear 22 is greater than the diameter of the reverse gear driven gear 18.

[0030] See attached Figures 3 to 4The present invention also provides a new energy transmission prepared according to the above-mentioned new energy transmission preparation method, comprising a functional shaft located on the gearbox 1, and a functional gear located on the functional shaft;

[0031] The functional shaft includes an input shaft 2, an intermediate shaft 3, an output shaft 4 and a reverse shaft 5, and the functional gears include a first gear drive gear 7, a second gear drive gear 8, a third gear drive gear 9, a fourth gear drive gear 10, a fifth gear drive gear 11, a first gear driven gear 13, a second gear driven gear 14, a third gear driven gear 15, a fourth gear driven gear 16, a fifth gear driven gear 17, a relief gear conversion gear 21 and a relief gear 22;

[0032] The first gear drive gear 7, the second gear drive gear 8, the third gear drive gear 9, the fourth gear drive gear 10 and the fifth gear drive gear 11 are located on the intermediate shaft 3;

[0033] The first gear driven gear 13, the second gear driven gear 14, the third gear driven gear 15, the fourth gear driven gear 16, the fifth gear driven gear 17 and the escape gear 22 are located on the output shaft 4;

[0034] The escape gear conversion gear 21 is located on the reverse gear shaft 5, and the escape gear conversion gear 21 includes a front gear segment 23 and a rear gear segment 24, and the diameter of the front gear segment 23 is greater than the diameter of the rear gear segment 24;

[0035] The intermediate shaft 3 is provided with an optical axis section 20. In this embodiment, the gear used by the original reverse idler 19 is replaced by the disengagement gear 21, and a large diameter disengagement gear 22 is used, so that the speed ratio of this structure can reach more than 10. When the scheme of this new energy transmission is applied to electric vehicles, it can effectively solve the disengagement conditions such as climbing a slope or crossing a pit. At the same time, the disengagement gear 22 should also take into account the reverse gear supply, and only the direction of rotation of the motor needs to be changed. This effectively realizes the application of the existing conventional commercial fuel vehicle transmission to electric commercial vehicles after a slight modification, reduces the R&D and production costs, makes the new energy transmission easy to manufacture, and overcomes the technical difficulties existing in this field.

[0036] The inventive point of the above scheme is to change the abandoned reverse idler gear from one to two, add a level of convertible transmission, and get rid of the interference of the intermediate shaft gear, so as to increase the transmission ratio and provide power for the car to get out of trouble under special circumstances. Specifically, a small optical axis appears at the tail of the intermediate shaft gear, which can provide space for increasing the diameter and number of teeth of the escape gear 22. The most advantageous thing is that the reverse gear shift mechanism itself can remain unchanged. This allows the transmission to obtain a large speed ratio of more than 10, effectively ensuring that the electric car can get out of trouble.

[0037] The relevant components in all the above embodiments are conventional products sold on the market.

[0038] The power driving process of the electric vehicle in the solution of the present invention during the escape working condition is: when the vehicle needs to escape, the power of the input shaft 2 is transmitted to the intermediate shaft 3 through the constant meshing gear 6, and the intermediate shaft 3 transmits the power to the front gear segment 23 of the escape gear conversion gear 21, and the front gear segment 23 of the escape gear conversion gear 21 drives the rear gear segment 24, and the rear gear segment 24 drives the escape gear 22, and the escape gear 22 drives the output shaft 4 to complete the transmission of the large speed ratio. When the escape gear is not engaged, the front gear segment 23, the rear gear segment 24 and the escape gear 22 of the escape gear conversion gear 21 are only idling.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A method for preparing a new energy transmission, characterized in that: On the basis of an existing conventional commercial fuel vehicle transmission, an optical shaft section (20) is provided on the intermediate shaft (3) of the existing conventional commercial fuel vehicle transmission, and the optical shaft section (20) is located at the reverse gear drive gear (12) of the intermediate shaft (3) of the existing conventional commercial fuel vehicle transmission; The reverse idler wheel (19) on the reverse shaft (5) of the conventional commercial fuel vehicle transmission is removed, and a disengagement gear conversion coupling tooth (21) is provided on the reverse shaft (5), wherein the disengagement gear conversion coupling tooth (21) comprises a front gear segment (23) and a rear gear segment (24), wherein the diameter of the front gear segment (23) is greater than the diameter of the rear gear segment (24); The diameter of the reverse gear driven gear (18) on the output shaft (4) is enlarged to make it a relief gear (22).

2. The method for preparing a new energy transmission according to claim 1, characterized in that: The diameter of the escape gear (22) is greater than the diameter of the reverse gear driven gear (18).

3. The new energy transmission prepared by the new energy transmission preparation method according to claims 1 to 2 is characterized in that: It comprises a functional shaft located on a gear box (1), and a functional gear located on the functional shaft; The functional shaft comprises an input shaft (2), an intermediate shaft (3), an output shaft (4) and a reverse gear shaft (5); the functional gears comprise a first gear drive gear (7), a second gear drive gear (8), a third gear drive gear (9), a fourth gear drive gear (10), a fifth gear drive gear (11), a first gear driven gear (13), a second gear driven gear (14), a third gear driven gear (15), a fourth gear driven gear (16), a fifth gear driven gear (17), a relief gear conversion gear (21) and a relief gear gear (22); The first gear drive gear (7), the second gear drive gear (8), the third gear drive gear (9), the fourth gear drive gear (10) and the fifth gear drive gear (11) are located on the intermediate shaft (3); The first gear driven gear (13), the second gear driven gear (14), the third gear driven gear (15), the fourth gear driven gear (16), the fifth gear driven gear (17) and the escape gear (22) are located on the output shaft (4); The escape gear conversion coupling tooth (21) is located on the reverse gear shaft (5), and the escape gear conversion coupling tooth (21) comprises a front gear segment (23) and a rear gear segment (24), and the diameter of the front gear segment (23) is greater than the diameter of the rear gear segment (24); An optical axis segment (20) is arranged on the intermediate shaft (3).

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