Hydraulic transmission box
By designing a hydraulic transmission, adopting an open-slot clutch and a fixed-shaft power shifter, the problems of large size, heavy weight, and poor heat dissipation of the transmission are solved, achieving efficient transmission and convenient operation of small engineering machinery.
Patent Information
- Application Number
- CN202520220315.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-12
AI Technical Summary
Existing gearboxes are large and heavy, and have poor clutch cooling, which affects their service life and ease of operation.
It adopts a hydraulic transmission design, including a transmission body, turbine shaft, multi-shaft and gear drive, and uses an open slot clutch to realize fixed shaft power shifting. It has two forward gears and one reverse gear, and combines oil pump gears and oil pump to improve heat dissipation.
It achieves a small size, light weight, good heat dissipation, long clutch plate service life, large transmission ratio, and convenient operation, making it suitable for small engineering machinery applications.
Smart Images

Figure CN223938588U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gearbox technology, and in particular to a hydraulic gearbox. Background Technology
[0002] A gearbox is a mechanism used to change the speed and torque from the engine. It can change the transmission ratio between the output shaft and the input shaft in a fixed or progressively increasing manner. A gearbox consists of a transmission mechanism and a control mechanism; some cars also have a power take-off (PTO) mechanism. Most transmission mechanisms use ordinary gear drives, while some use planetary gear drives. Ordinary gear transmission mechanisms typically use sliding gears and synchronizers.
[0003] Gearboxes are commonly used machines, but most gearboxes are too large and heavy, making them inconvenient for related work, and their clutches have poor heat dissipation, which affects their service life. Summary of the Invention
[0004] This utility model aims to at least partially solve one of the technical problems in the above-mentioned technologies.
[0005] To achieve the above objectives, the first aspect of this utility model provides a hydraulic transmission, comprising: a transmission body, a turbine shaft, a first shaft, a second shaft, a third shaft, a fourth shaft, a fifth shaft, a first output flange, and a second output flange. The first shaft is connected to the output end of the turbine shaft, and the first, second, third, fourth, and fifth shafts are sequentially driven by gears. The first and second output flanges are respectively disposed on the fifth shaft.
[0006] Both ends.
[0007] In addition, the hydraulic transmission proposed above according to this utility model may also have the following additional technical features:
[0008] Furthermore, a first gear, a clutch, and a second gear are provided on the shaft.
[0009] Furthermore, the two shafts are provided with a second gear, a first gear, and a clutch, and the first gear meshes with the first gear of the first shaft.
[0010] Furthermore, the three shafts are provided with a first gear, a clutch, a third gear, and a second gear. The first gear meshes with the first gear of the second shaft, and the second gear meshes with the second gear of the second shaft.
[0011] Furthermore, the four shafts are provided with a second gear and a first gear, and the second gear meshes with the third gear of the three shafts.
[0012] Furthermore, the five-axis is equipped with a five-axis gear and a parking brake device, and the five-axis gear meshes with the first gear of the four-axis.
[0013] Furthermore, an oil pump gear and an oil pump are also provided on the top of the gearbox body.
[0014] According to this utility model, a hydraulic transmission body is a fixed-axis power shift type, a parallel five-axis constant mesh gear type, with two forward clutches and one reverse clutch, which can realize two forward gears and one reverse gear. Moreover, this device adopts an open slot clutch, which has high manufacturing precision, good heat dissipation effect, and long service life of clutch plates. The transmission is small in size, light in weight, has a large transmission ratio, is easy to operate, and is very suitable for the application of various small engineering machinery.
[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:
[0017] Figure 1 is a structural schematic diagram of a hydraulic transmission according to an embodiment of the present invention;
[0018] As shown in the figure:
[0019] 1. Turbine shaft; 2. First shaft; 3. Oil pump gear; 4. Oil pump; 5. First gear of first shaft; 6. First shaft clutch; 7. Second gear of first shaft; 8. Second gear of second shaft; 9. First gear of second shaft; 10. Second shaft clutch; 11. Second shaft; 12. First gear of third shaft; 13. Third shaft clutch; 14. Third shaft; 15. Third gear of third shaft; 16. Second gear of third shaft; 17. Second gear of fourth shaft; 18. Fourth shaft; 19. First gear of fourth shaft; 20. Fifth shaft; 21. Fifth shaft gear; 22. First output flange; 23. Second output flange; 24. Parking brake device. Detailed Implementation
[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0021] The following description, in conjunction with the accompanying drawings, describes a hydraulic transmission according to an embodiment of the present invention.
[0022] As shown in Figure 1, a hydraulic transmission according to an embodiment of the present invention may include a transmission body, a turbine shaft 1, a first shaft 2, a second shaft 11, a third shaft 14, a fourth shaft 18, a fifth shaft 20, a first output flange 22, and a second output flange 23.
[0023] Among them, shaft 2 is connected to the output end of turbine shaft 1.
[0024] Shaft 2, shaft 11, shaft 14, shaft 18, and shaft 20 are sequentially driven by gears.
[0025] It should be noted that several different gears are installed on shaft 2, shaft 11, shaft 14, shaft 18, and shaft 20 to achieve function switching.
[0026] A first gear 5, a clutch 6, and a second gear 7 are provided on a shaft 2.
[0027] The second shaft 11 is provided with a second gear 8, a first gear 9, and a clutch 10. The first gear 9 meshes with the first gear 5 of the first shaft.
[0028] It should be noted that shaft 2 can drive shaft 2's first gear 9 via shaft 1's first gear 5, which in turn drives shaft 2's first gear 9.
[0029] The three-axis 14 is provided with a three-axis first gear 12, a three-axis clutch 13, a three-axis third gear 15 and a three-axis second gear 16. The three-axis first gear 12 meshes with the three-axis first gear 9, and the three-axis second gear 16 meshes with the three-axis second gear 8.
[0030] It should be noted that the second shaft 11 can drive the third shaft second gear 16 through the second shaft second gear 8, which in turn drives the third shaft 14.
[0031] The four-axis 18 is provided with a second gear 17 and a first gear 19, and the second gear 17 meshes with the third gear 15.
[0032] It should be noted that the three-axis 14 can drive the four-axis second gear 17 through the three-axis third gear 15, which in turn drives the four-axis 18.
[0033] The five-axis 20 is equipped with a five-axis gear 21 and a parking brake device 24, and the five-axis gear 21 meshes with the four-axis first gear 19.
[0034] It should be noted that the four-axis 18 can drive the five-axis gear 21 through the first gear 19 of the four-axis, which in turn drives the five-axis 20.
[0035] The top of the gearbox housing is also equipped with an oil pump gear 3 and an oil pump 4.
[0036] It should be noted that oil pump gear 3 and oil pump 4 can meet the device's requirements for the hydraulic system.
[0037] The first output flange 22 and the second output flange 23 are respectively located at both ends of the five-axis.
[0038] It should be noted that the adjustment of the first output flange 22 and the second output flange 23 can be achieved through the cooperation between the shaft, gear and clutch.
[0039] Specifically, when relevant personnel use this gearbox, if it is necessary to advance one gear, the turbine shaft 1 can be activated. The turbine shaft 1 will drive the first shaft 2, which will drive the first gear 9 of the second shaft through the first gear 5 of the first shaft, and then drive the second shaft 11. At this time, the second shaft clutch 10 will drive the second gear 8 of the second shaft, which will drive the second gear 16 of the third shaft and the third shaft 14, which will drive the third gear 15 of the third shaft, and continue to drive the fifth shaft gear 21 through the second gear 17 of the fourth shaft and the first gear 19 of the fourth shaft, and finally the fifth shaft 20 will output.
[0040] When a second gear is needed, the turbine shaft 1 can be activated. Turbine shaft 1 drives shaft 2, which in turn drives shaft 2's first gear 9 via shaft 1's first gear 5. This, in turn, drives shaft 3's first gear 12 and shaft 3's first gear 14. At this point, shaft 3's clutch 13 drives shaft 3's third gear 15, which in turn drives shaft 5's fifth gear 21 via shaft 4's second gear 17 and shaft 4's first gear 19.
[0041] Finally, the 5-axis 20 output is performed.
[0042] When reverse gear is needed, turbine shaft 1 can be activated. Turbine shaft 1 will drive shaft 2. At this time, shaft 2 clutch 6 will drive shaft 2 gear 7, which in turn drives shaft 3 gear 2 gear 16, which in turn drives shaft 3 gear 3 gear 15. It will continue to drive shaft 5 gear 21 through shaft 4 gear 2 gear 17 and shaft 4 gear 19, and finally shaft 5 gear 20 will output.
[0043] In summary, the hydraulic transmission according to the present invention is a fixed-axis power shift transmission with a parallel five-axis constant mesh gear design. It has two forward clutches and one reverse clutch, enabling two forward gears and one reverse gear. Furthermore, the device uses an open-slot clutch, which has high manufacturing precision, good heat dissipation, and long clutch plate service life. The transmission is small in size, lightweight, has a large transmission ratio, and is easy to operate, making it very suitable for various small engineering machinery applications.
[0044] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative meanings of the above terms are...
[0046] The descriptions do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction.
[0047] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A hydraulic transmission, characterized in that, include: Gearbox housing, turbine shaft (1), first shaft (2), second shaft (11), third shaft (14), fourth shaft (18), fifth shaft (20), first output flange (22), and second output flange (23), wherein, The shaft (2) is connected to the output end of the turbine shaft (1); The first shaft (2), the second shaft (11), the third shaft (14), the fourth shaft (18), and the fifth shaft (20) are sequentially driven by gears; The first output flange (22) and the second output flange (23) are respectively disposed at both ends of the five-axis (20); The shaft (2) is provided with a shaft first gear (5), a shaft clutch (6) and a shaft second gear (7). The second shaft (11) is provided with a second shaft second gear (8), a second shaft first gear (9) and a second shaft clutch (10), and the second shaft first gear (9) meshes with the first shaft first gear (5); The three shafts (14) are provided with a first gear (12), a clutch (13), a third gear (15), and a second gear (16). The first gear (12) meshes with the first gear (9), and the second gear (16) meshes with the second gear (8). The four shafts (18) are provided with a second gear (17) and a first gear (19), and the second gear (17) meshes with the third gear (15) of the three shafts. The five-axis (20) is equipped with a five-axis gear (21) and a parking brake device (24), and the five-axis gear (21) meshes with the four-axis first gear (19).
2. A hydraulic transmission according to claim 1, characterized in that, The top of the gearbox body is also provided with an oil pump gear (3) and an oil pump (4).