Integrated electric drive front pto

Abstract

The utility model provides an integrated electric drive front PTO, including first casing, one side of first casing is fixed with second casing, is equipped with motor in second casing, first casing is rotatoryly installed with input shaft and output shaft, and the one end of input shaft stretches into second casing and is linked with the output end transmission of motor, and the fixed input gear is got on input shaft, and the first end of output shaft is located in first casing and is installed with clutch, and the input end of clutch is installed with output gear, and output gear is linked with input gear transmission, and the second end of output shaft stretches out first casing, adopt the utility model, adopt independent motor to drive input shaft until output shaft, make electric, hybrid tractor product front PTO can independently output rotary power to outside, is convenient for individual control, reduces whole vehicle efficiency loss, in addition, not only good integrity, and compact structure, reduce the space of occupying whole machine chassis, and assembly, maintenance are simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of new energy tractor technology, specifically to an integrated electric drive front PTO. Background Technology

[0002] In scenarios such as combined operations, orchard management, and lawn mowing, front-mounted PTOs offer more flexible power output, meeting the needs of agricultural implements operating in front of the tractor, leading to a gradual increase in market demand. With the booming development of the new energy vehicle industry and the increasing public awareness of environmental protection, the tractor industry is also expanding its development towards electric and hybrid tractors.

[0003] Currently, electric and hybrid tractors and their associated electric-drive front PTOs are not yet fully mature in the tractor market, and the technological development of electric-drive front PTOs faces many challenges. For example, in the actual use of electric tractors, the tractor needs to balance the efficiency loss of travel and power output. Currently, mature mass-produced electric tractors adopt a single-motor mode, with the front PTO mechanically coupled to the drive motor, making it difficult for the tractor to independently output rotational power. Utility Model Content

[0004] To solve at least one of the above technical problems, this utility model provides an integrated electric drive front PTO.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: This utility model provides an integrated electric drive front PTO, including a first housing, a second housing fixed to one side of the first housing, and a motor disposed inside the second housing; an input shaft and an output shaft are rotatably mounted inside the first housing, one end of the input shaft extends into the second housing and is drivenly connected to the output end of the motor; an input gear is fixed on the input shaft, the first end of the output shaft is located inside the first housing and a clutch is installed thereon, the input end of the clutch is equipped with an output gear, and the output gear is drivenly connected to the input gear; the second end of the output shaft extends out of the first housing.

[0006] The beneficial effects of this utility model are: This invention employs an independent motor to drive the input shaft and output shaft, enabling the front PTO in electric and hybrid tractors to independently output rotational power, facilitating individual control and reducing overall vehicle efficiency loss. Furthermore, the motor and various transmission structures are located in two separate housings, resulting in good overall integrity and a compact structure, reducing the space occupied on the chassis and simplifying assembly and maintenance. Simultaneously, the two housings can be independently connected to external cooling structures without interfering with each other, avoiding problems such as increased resistance and oil leakage caused by excessive oil in the transmission components within the first housing.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, a transmission gear set is rotatably installed inside the first housing, and the output gear and the input gear are connected by transmission gear set.

[0009] This allows for increasing the distance between the output and input shafts, thus meeting the installation space requirements of external tools.

[0010] Furthermore, the transmission gear set includes a first gear shaft and a second gear shaft. Both ends of the first gear shaft and both ends of the second gear shaft are rotatably connected to the first housing. The input gear, the first gear shaft, the second gear shaft, and the output gear mesh in sequence.

[0011] By adopting an integral first gear shaft and second gear shaft, the structure not only has high strength, but also has a small number of parts and is easy to install.

[0012] Furthermore, the middle part and the first end of the output shaft are connected to the first housing via bearings, and the clutch and output gear are located between the two bearings of the output shaft.

[0013] The output shaft is supported by bearings in the middle and at the first end. The output shaft can also support the clutch and the output gear, which improves the stability of the clutch, the output gear and the output shaft, and reduces the deflection and vibration of the output shaft.

[0014] Furthermore, the output gear is connected to the output shaft via a bearing.

[0015] The output gear is directly supported by the output shaft, and the frictional resistance is reduced by the bearings of the output gear, thereby improving the stability of the output gear.

[0016] Furthermore, the second housing and the second end of the output shaft are located on opposite sides of the first housing, and the side of the second housing away from the first housing is provided with a removable rear end cover.

[0017] The second end of the output shaft does not interfere with the second housing, allowing sufficient space for connecting external tools to the second end of the output shaft; at the same time, it facilitates the disassembly and maintenance of components inside the second housing.

[0018] Furthermore, a detachable front end cover is provided on the side of the first housing away from the second housing, and the second end of the output shaft passes through the front end cover. An output oil seal and a friction-reducing sleeve are provided inside the front end cover, and both the output oil seal and the friction-reducing sleeve are fitted onto the output shaft. A detachable shaft end protective cover is also provided on the front end cover, and the shaft end protective cover is fitted onto the second end of the output shaft.

[0019] This facilitates improved sealing between the output shaft and the first housing. At the same time, the shaft end guard can protect the second end of the output shaft without the need to connect external tools, preventing oil leakage and corrosion from external corrosive media.

[0020] Furthermore, a shared partition wall is provided between the second housing and the first housing, and this partition wall is rotatably connected to the input shaft via an input oil seal.

[0021] This facilitates improved sealing between the second and first housings, allowing each housing to be independently connected to an external cooling structure without affecting the others. It also avoids problems such as increased resistance and oil leakage in the transmission components within the first housing due to excessive oil.

[0022] Furthermore, one end of the input shaft extends into the output end of the motor and is connected to the output end of the motor via a spline drive; the input shaft and the input gear are integrally formed.

[0023] The transmission is reliable and the installation is convenient; at the same time, the input shaft and input gear can be assembled as a whole, which is convenient to install and has high strength.

[0024] Furthermore, a gear pump assembly is also fixed on the first housing, with the input gear of the gear pump assembly meshing with the output gear.

[0025] The gear pump assembly is driven by the output gear, which can be used to supply hydraulic oil to the outside world, resulting in a higher degree of integration and energy utilization. At the same time, the hydraulic oil can drive the front-end tool motor, making it highly versatile. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] In the accompanying drawings, the technical features represented by each reference numeral are as follows: 1-First housing; 11-Front end cover; 12-Output oil seal; 13-Anti-friction sleeve; 2-Second housing; 21-Rear end cover; 3-Motor; 4-Input shaft; 41-Input gear; 42-Input oil seal; 5-Output shaft; 6-Clutch; 7-Output gear; 8-First gear shaft; 9-Second gear shaft; 10-Gear pump assembly. Detailed Implementation

[0028] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0029] This utility model refers to Figure 1 .

[0030] This utility model provides an integrated electric drive front PTO, including a first housing 1, a second housing 2 fixed to one side of the first housing 1, and a motor 3 disposed inside the second housing 2; an input shaft 4 and an output shaft 5 are rotatably mounted inside the first housing 1, one end of the input shaft 4 extends into the second housing 2 and is drivenly connected to the output end of the motor 3; an input gear 41 is fixed on the input shaft 4, the first end of the output shaft 5 is located inside the first housing 1 and a clutch 6 is installed thereon, an output gear 7 is installed at the input end of the clutch 6, and the output gear 7 is drivenly connected to the input gear 41; the second end of the output shaft 5 extends out of the first housing 1.

[0031] principle: The output gear 7 can be fixedly installed at the input end of the clutch 6, or it can be installed at the input end of the clutch 6 via a spline; the output end of the clutch 6 is connected to the first end of the output shaft 5 for transmission.

[0032] During operation, motor 3 drives input shaft 4, which in turn drives output gear 7 to rotate via input gear 41. When clutch 6 is disengaged, output shaft 5 is not powered. When clutch 6 is engaged, clutch 6 transmits power from output gear 7 to output shaft 5, and the second end of output shaft 5 transmits power out of first housing 1, thus serving as the front PTO of the tractor to output power to external tools.

[0033] By employing this utility model, an independent motor 3 drives the input shaft 4 all the way to the output shaft 5, enabling the front PTO in electric and hybrid tractors to independently output rotational power, facilitating individual control and reducing overall vehicle efficiency loss. Furthermore, the motor 3 and each transmission structure are located in two separate housings, resulting in good overall integrity and a compact structure, reducing the space occupied by the chassis and simplifying assembly and maintenance. At the same time, the two housings can be independently connected to external cooling structures without affecting each other, avoiding problems such as increased resistance and oil leakage caused by excessive oil in the transmission components within the first housing 1.

[0034] Furthermore, a transmission gear set is rotatably installed inside the first housing 1, and the output gear 7 and the input gear 41 are connected by transmission gear set.

[0035] This facilitates increasing the distance between the output shaft 5 and the input shaft 4, thus meeting the installation space requirements of external tools.

[0036] Furthermore, the transmission gear set includes a first gear shaft 8 and a second gear shaft 9. Both ends of the first gear shaft 8 and both ends of the second gear shaft 9 are rotatably connected to the first housing 1. The input gear 41, the first gear shaft 8, the second gear shaft 9, and the output gear 7 mesh in sequence.

[0037] Preferably, both ends of the first gear shaft 8 and both ends of the second gear shaft 9 are rotatably connected to the first housing 1 via bearings.

[0038] By adopting an integral first gear shaft 8 and second gear shaft 9, the structure not only has high strength, but also has a small number of parts and is easy to install.

[0039] Furthermore, the middle part and the first end of the output shaft 5 are connected to the first housing 1 through bearings, and the clutch 6 and the output gear 7 are located between the two bearings of the output shaft 5.

[0040] The middle part and the first end of the output shaft 5 are supported by bearings. At the same time, the output shaft 5 can support the clutch 6 and the output gear 7, which improves the stability of the clutch 6, the output gear 7 and the output shaft 5, and reduces the deflection and vibration of the output shaft 5.

[0041] Furthermore, the output gear 7 is connected to the output shaft 5 via a bearing.

[0042] Note: An internal spline sleeve is provided on one side of the output gear 7, and the internal spline sleeve is connected to the input end of the clutch 6 through spline transmission.

[0043] The output gear 7 is directly supported by the output shaft 5, and the frictional resistance is reduced by the bearing of the output gear 7, thereby improving the stability of the output gear 7.

[0044] Furthermore, the second housing 2 and the second end of the output shaft 5 are located on opposite sides of the first housing 1, and the side of the second housing 2 away from the first housing 1 is provided with a detachable rear end cover 21.

[0045] Preferably, the shaft of the motor 3 is connected to the rear end cover 21 via a bearing.

[0046] The second end of the output shaft 5 does not interfere with the second housing 2, which allows for sufficient space at the second end of the output shaft 5 to connect to external tools; at the same time, it facilitates the disassembly, assembly and maintenance of the components inside the second housing 2.

[0047] Furthermore, the first housing 1 is provided with a detachable front end cover 11 on the side away from the second housing 2, and the second end of the output shaft 5 passes through the front end cover 11. The front end cover 11 is provided with an output oil seal 12 and a friction-reducing sleeve 13, both of which are fitted onto the output shaft 5. The front end cover 11 is also provided with a detachable shaft head protective cover, which is fitted onto the second end of the output shaft 5.

[0048] Preferably, the output shaft 5 and the first housing 1 are also rotatably connected by a sealing ring, which is located inside the wear-reducing sleeve 13.

[0049] This facilitates improved sealing between the output shaft 5 and the first housing 1. At the same time, the shaft end guard can protect the second end of the output shaft 5 when no external tools are needed, preventing oil leakage and corrosion from external corrosive media.

[0050] Furthermore, a shared partition wall is provided between the second housing 2 and the first housing 1, and this partition wall is rotatably connected to the input shaft 4 via an input oil seal 42.

[0051] This facilitates improved sealing between the second housing 2 and the first housing 1, allowing the two housings to be connected to external cooling structures independently without affecting each other. It also avoids problems such as increased resistance and oil leakage in the transmission components inside the first housing 1 due to excessive oil.

[0052] Preferably, bearings are provided on both sides of the input oil seal 42. The inner ring of the bearing is fitted onto the input shaft 4. The outer ring of the bearing on one side of the input oil seal 42 is connected to the first housing 1, and the outer ring of the bearing on the other side of the input oil seal 42 is connected to the second housing 2. The other end of the input shaft 4 is connected to the first housing 1 through another bearing. This facilitates the improvement of the stability of the input shaft 4.

[0053] Furthermore, one end of the input shaft 4 extends into the output end of the motor 3 and is connected to the output end of the motor 3 via a spline drive; the input shaft 4 and the input gear 41 are integrally formed.

[0054] The transmission is reliable and the installation is convenient; at the same time, the input shaft 4 and the input gear 41 can be assembled as a whole, which is convenient to install and has high strength.

[0055] Furthermore, a gear pump assembly 10 is also fixed on the first housing 1, and the input gear 41 of the gear pump assembly 10 meshes with the output gear 7.

[0056] The output gear 7 drives the gear pump assembly 10, which can be used to supply hydraulic oil to the outside world, with a higher degree of integration and energy utilization. At the same time, the hydraulic oil can drive the front-end tool motor, which has good functional applicability.

[0057] In the description of this utility model, it should be understood that if descriptive terms indicating orientation, direction, or positional relationship appear, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc., the orientation or positional relationship indicated in this specification is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of understanding this utility model and simplifying the description, and does not indicate or imply that the part, element, or whole referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0058] Furthermore, if sequential descriptive terms such as "first," "second," etc., appear, their purpose in this specification is for ease of understanding or simplification. For example, to distinguish multiple technical features of the same type or function, which must be mentioned separately, this specification may use prefixes or suffixes to differentiate them. Therefore, they should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this utility model, if descriptive terms describing structural relationships are used, such as "installation," "connection," "joining," and "fixing," they should be interpreted broadly unless otherwise explicitly specified and limited. For example, "installation," "connection," and "joining" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. "Fixing" can refer to an integral fixation or a detachable fixation using fasteners; it can be a direct fixation or a fixation through an intermediate medium. For those skilled in the art, the specific meaning of the above descriptive terms in this utility model can be understood based on the specific circumstances, the context, and the coherence of the preceding and following text.

[0060] In this utility model, if descriptive terms containing subordinate or connecting meanings appear, such as "above" or "below" the second feature, they should not be interpreted restrictively unless otherwise explicitly specified and limited. For example, "above" or "below" can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. For those skilled in the art, the specific meaning of the above descriptive terms in this utility model can be understood according to the specific circumstances, the context, and the coherence of the preceding and following text.

[0061] Furthermore, "above," "on top of," and "above" the first feature in relation to the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments, examples, and features described in this specification, and such combinations or integrations should all fall within the scope of the present invention.

[0063] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Variations, modifications, substitutions, and modifications made by those skilled in the art to the above embodiments within the scope of information available through public channels and in conjunction with the technical teachings given in this application are still covered within the protection scope of this application.

Claims

1. An integrated electric drive front PTO, characterized in that: The device includes a first housing (1), a second housing (2) fixed to one side of the first housing (1), and a motor (3) inside the second housing (2); an input shaft (4) and an output shaft (5) are rotatably mounted inside the first housing (1), one end of the input shaft (4) extends into the second housing (2) and is connected to the output end of the motor (3); an input gear (41) is fixed on the input shaft (4), the first end of the output shaft (5) is located inside the first housing (1) and a clutch (6) is installed thereon, the input end of the clutch (6) is equipped with an output gear (7), and the output gear (7) is connected to the input gear (41) in a transmission manner; the second end of the output shaft (5) extends out of the first housing (1).

2. The integrated electric drive front PTO according to claim 1, characterized in that: A transmission gear set is rotatably installed inside the first housing (1), and the output gear (7) and the input gear (41) are connected by transmission gear set.

3. The integrated electric drive front PTO according to claim 2, characterized in that: The transmission gear set includes a first gear shaft (8) and a second gear shaft (9). Both ends of the first gear shaft (8) and both ends of the second gear shaft (9) are rotatably connected to the first housing (1). The input gear (41), the first gear shaft (8), the second gear shaft (9) and the output gear (7) mesh in sequence.

4. The integrated electric drive front PTO according to claim 1, characterized in that: The middle part and the first end of the output shaft (5) are connected to the first housing (1) through bearings, and the clutch (6) and the output gear (7) are located between the two bearings of the output shaft (5).

5. The integrated electric drive front PTO according to claim 4, characterized in that: The output gear (7) is connected to the output shaft (5) via bearings.

6. The integrated electric drive front PTO according to claim 1, characterized in that: The second housing (2) and the second end of the output shaft (5) are located on opposite sides of the first housing (1), and the second housing (2) is provided with a detachable rear end cover (21) on the side away from the first housing (1).

7. The integrated electric drive front PTO according to claim 6, characterized in that: The first housing (1) has a detachable front cover (11) on the side away from the second housing (2). The second end of the output shaft (5) passes through the front cover (11). The front cover (11) has an output oil seal (12) and a friction-reducing sleeve (13). The output oil seal (12) and the friction-reducing sleeve (13) are both sleeved on the output shaft (5). The front cover (11) also has a detachable shaft head protective cover, which is sleeved on the second end of the output shaft (5).

8. The integrated electric drive front PTO according to claim 1, characterized in that: The second housing (2) and the first housing (1) are provided with a common partition wall, which is rotatably connected to the input shaft (4) through the input oil seal (42).

9. The integrated electric drive front PTO according to claim 8, characterized in that: One end of the input shaft (4) extends into the output end of the motor (3) and is connected to the output end of the motor (3) via spline transmission; the input shaft (4) and the input gear (41) are integrally formed.

10. The integrated electric drive front PTO according to claim 1, characterized in that: The first housing (1) is also fixed with a gear pump assembly (10), and the input gear (41) of the gear pump assembly (10) meshes with the output gear (7).

Images