Gearbox shell integrated with oil duct, gearbox and tractor

Abstract

The utility model relates to a gearbox shell integrating oil ducts, a gearbox and a tractor, and relates to the field of gearboxes, at least two built-in oil duct sets are arranged in the gearbox shell, each built-in oil duct set comprises a lubricating oil duct and at least one hydraulic oil duct, one end of each built-in oil duct set is communicated with the outer wall of the gearbox shell, and the other end of each built-in oil duct set is communicated with the outer wall of the gearbox shell. And the other end of the built-in oil duct group is communicated with a rotating shaft mounting hole in the gearbox shell. The gearbox has the advantages that the through holes are directly manufactured in the gearbox shell to serve as the built-in integrated oil ducts, scattered pipeline oil ducts are integrated into the gearbox shell, the use amount of oil pipes and connectors of pipelines is reduced, the number of parts of a whole vehicle is effectively reduced, the manufacturing and assembling complexity and cost are reduced, and the cost is reduced. Meanwhile, the weight of the whole vehicle is reduced, the energy utilization rate of the whole vehicle is improved, and oil consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of gearbox, concretely relates to a gearbox casing of integrated oil channel, gearbox and tractor. BACKGROUND

[0002] At present, the gearbox oil pipe line on the tractor is all exposed, the pipeline is more, the use amount of parts is big, occupies more space of whole vehicle, pipeline is in disorder, seriously influences the appearance of vehicle, and the cost of using is higher, and the pipeline still has the problems such as aging and poor sealing. CONTENT OF UTILITY MODEL

[0003] The utility model solves the technical problem of how to solve the problem of pipeline in disorder and easy aging in the gearbox.

[0004] The utility model discloses a technical scheme for solving the above technical problem: a gearbox casing of integrated oil channel, at least two groups of built-in oil channel groups are arranged in the gearbox casing, each group of built-in oil channel groups comprises one lubricating oil channel and at least one hydraulic oil channel, one end of the built-in oil channel group is communicated with the outer wall of the gearbox casing, and the other end of the built-in oil channel group is communicated with the rotating shaft mounting hole on the gearbox casing.

[0005] The utility model has the advantages that: by directly manufacturing a through hole in the gearbox casing as a built-in integrated oil channel, the dispersed pipeline oil channel is integrated into the gearbox casing, the use amount of oil pipes and joints of the pipeline is reduced, the number of parts of the whole vehicle is effectively reduced, the complexity and cost of manufacturing and assembling are reduced, the weight of the whole vehicle is reduced, the energy utilization rate of the whole vehicle is improved, and the fuel consumption is reduced.

[0006] Based on the above technical scheme, the utility model can also be improved as follows.

[0007] Further, the built-in oil channel group is provided with two groups.

[0008] The utility model discloses the beneficial effect of the above further scheme is: two groups of built-in oil channel groups supply oil to the input shaft and the output shaft respectively.

[0009] Further, the gearbox casing comprises a first end wall, a second end wall and a top wall, the upper ends of the first end wall and the second end wall are fixedly connected or integrally formed with the top wall, the rotating shaft mounting holes are arranged on the first end wall and the second end wall, one end of the built-in oil channel group is communicated with the top surface of the top wall, one end of the built-in oil channel group is communicated with the rotating shaft mounting hole on the first end wall, and the other end of the built-in oil channel group is communicated with the rotating shaft mounting hole on the second end wall.

[0010] The beneficial effect of the further scheme is that the two groups of built-in oil channels extend from the top wall to the first end wall and the second end wall respectively, reducing the number of oil channels in a single end wall, ensuring the structural strength of the end wall, and the layout of the built-in oil channel groups is reasonable.

[0011] Further, each group of the built-in oil channel groups comprises one lubricating oil channel and three hydraulic oil channels.

[0012] The utility model discloses still provide a kind of gearbox, including the gearbox shell of integrated oil channel.

[0013] Further, the gearbox further comprises an input shaft and an output shaft, the input shaft and the output shaft are rotatably connected with the rotating shaft mounting hole of the gearbox shell, the input shaft is provided with an input shaft lubrication flow channel and at least one input shaft hydraulic flow channel, one end of the input shaft lubrication flow channel is communicated with the lubricating oil channel of one group of built-in oil channel groups, and one end of the input shaft hydraulic flow channel is communicated with the hydraulic oil channel of one group of built-in oil channel groups one by one.

[0014] The beneficial effect of the further scheme is that the lubricating oil channel is communicated with the corresponding input shaft lubrication flow channel, lubricating oil is supplied to the parts on the input shaft, the hydraulic oil channel is communicated with the corresponding input shaft hydraulic flow channel, and power is provided for gear shifting on the shaft.

[0015] Similarly, the lubricating oil channel is communicated with the corresponding output shaft lubrication flow channel, lubricating oil is supplied to the parts on the output shaft, and the hydraulic oil channel is communicated with the corresponding output shaft hydraulic flow channel, and power is provided for gear shifting on the shaft.

[0016] Further, the input shaft is provided with at least two input shaft hydraulic flow channels, one end of the input shaft lubrication flow channel and one end of the at least two input shaft hydraulic flow channels are arranged axially along the input shaft, and at least two input shaft sealing rings are sleeved on the input shaft, the input shaft sealing ring is located between one end of the adjacent input shaft lubrication flow channel and one end of the input shaft hydraulic flow channel, and between one end of the adjacent two input shaft hydraulic flow channels.

[0017] The beneficial effect of the further scheme is that the input shaft sealing ring is used for sealing the input shaft and the inner wall of the rotating shaft mounting hole, and separating adjacent oil channels, so as to ensure the complementary interference of each oil channel during the rotation of the input shaft and independent oil supply.

[0018] Further, the output shaft is provided with at least two output shaft hydraulic flow channels, one end of the output shaft lubricating flow channel and at least one end of the output shaft hydraulic flow channel are arranged along the output shaft in an axial direction, at least two output shaft sealing rings are arranged on the output shaft, the output shaft sealing ring is arranged between one end of the adjacent output shaft lubricating flow channel and one end of the output shaft hydraulic flow channel, and between two adjacent output shaft hydraulic flow channels.

[0019] The beneficial effect of the further scheme is that the output shaft sealing ring is used for sealing the output shaft and the inner wall of the shaft mounting hole, and separating the adjacent oil channels, so that the oil channels are complementarily interfered and independently supplied with oil during the rotation of the output shaft.

[0020] Further, the gearbox further comprises a valve block, which is fixedly connected with the gearbox shell and in communication with one end of the built-in oil channel group.

[0021] The beneficial effect of the further scheme is that the valve block distributes the supplied hydraulic oil or lubricating oil into the corresponding oil channel of the built-in oil channel group, and provides a pipeline interface, so that the gearbox shell is connected with the external oil supply pipeline.

[0022] The utility model also provides a tractor which comprises the gearbox. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is a three-dimensional view of the gearbox of the utility model;

[0024] Fig. 2 It is a schematic view of the internal structure of the input shaft of the gearbox of the utility model, in which the surface contour of the input shaft and the gearbox shell is drawn only for showing the internal structure, instead of the solid structure;

[0025] Fig. 3 It is a schematic view of the internal structure of the output shaft of the gearbox of the utility model, in which the surface contour of the input shaft and the gearbox shell is drawn only for showing the internal structure, instead of the solid structure.

[0026] In the drawings, the components represented by the numbers are listed as follows:

[0027] 1, gearbox shell; 2, lubricating oil channel; 3, hydraulic oil channel; 4, first end wall; 5, second end wall; 6, top wall; 7, input shaft; 71, input shaft lubricating flow channel; 72, input shaft hydraulic flow channel; 8, output shaft; 81, output shaft lubricating flow channel; 82, output shaft hydraulic flow channel; 9, valve block. DETAILED DESCRIPTION

[0028] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used for explaining the utility model, and are not used for limiting the scope of the utility model.

[0029] Embodiment one

[0030] As Figs. 1-3 shown, the embodiment provides a gearbox housing with integrated oil channels, the gearbox housing 1 is provided with at least two groups of built-in oil channel groups, each group of the built-in oil channel groups comprises a lubricating oil channel 2 and at least one hydraulic oil channel 3, one end of the built-in oil channel group is in communication with the outer wall of the gearbox housing 1, and the other end of the built-in oil channel group is in communication with the rotating shaft mounting hole on the gearbox housing 1.

[0031] In the scheme, by directly manufacturing a through hole in the gearbox housing 1 as a built-in integrated oil channel, the dispersed pipeline oil channels are integrated into the gearbox housing, the use amount of oil pipes and joints of the pipeline is reduced, the number of parts of the whole vehicle is effectively reduced, the complexity and cost of manufacturing and assembly are reduced, the weight of the whole vehicle is reduced, the energy utilization rate of the whole vehicle is improved, and the fuel consumption is reduced.

[0032] On the basis of the above technical scheme, the built-in oil channel groups are provided in two groups.

[0033] The two groups of built-in oil channel groups supply oil to the input shaft 7 and the output shaft 8 respectively.

[0034] Alternatively, the built-in oil channel groups can also be provided in more than three groups. The number of built-in oil channel groups is the same as the number of shafts installed in the gearbox housing 1, and each built-in oil channel group supplies lubricating oil and hydraulic oil to the corresponding shaft.

[0035] On the basis of the above technical scheme, the gearbox housing 1 comprises a first end wall 4, a second end wall 5 and a top wall 6, the upper ends of the first end wall 4 and the second end wall 5 are fixedly connected or integrally formed with the top wall 6, the rotating shaft mounting holes are arranged on the first end wall 4 and the second end wall 5, one end of the built-in oil channel group is in communication with the top surface of the top wall 6, one end of the built-in oil channel group is in communication with the rotating shaft mounting hole on the first end wall 4, and the other end of the built-in oil channel group is in communication with the rotating shaft mounting hole on the second end wall 5.

[0036] The two groups of built-in oil channel groups extend from the top wall 6 to the first end wall 4 and the second end wall 5 respectively, the number of oil channels in a single end wall is reduced, the structural strength of the end wall is ensured, and the layout of the built-in oil channel groups is reasonable.

[0037] Specifically, as Fig. 2 and Fig. 3As shown, one end of all the built-in oil passage groups is concentrated above the first end wall 4. Thus, the lubricating oil passage 2 and hydraulic oil passage 3 of one set of built-in oil passage groups are vertical through holes, while the lubricating oil passage 2 and hydraulic oil passage 3 of the other set of built-in oil passage groups first extend laterally along the top wall 6 and then extend vertically along the second end wall 5 to form an L-shaped hole.

[0038] Based on the above technical solution, each group of built-in oil passages includes one lubricating oil passage 2 and three hydraulic oil passages 3.

[0039] Example 2

[0040] like Figs. 1-3 As shown, this embodiment provides a gearbox, including the gearbox housing with integrated oil passages as described in Embodiment 1.

[0041] Based on the above technical solution, the gearbox further includes an input shaft 7 and an output shaft 8. Both the input shaft 7 and the output shaft 8 are rotatably connected to the shaft mounting holes of the gearbox housing 1. The input shaft 7 is provided with an input shaft lubrication channel 71 and at least one input shaft hydraulic channel 72. One end of the input shaft lubrication channel 71 is connected to the lubrication channel 2 of one set of built-in oil passages, and one end of the input shaft hydraulic channel 72 is connected to the hydraulic channel 3 of one set of built-in oil passages. The output shaft 8 is provided with an output shaft lubrication channel 81 and at least one output shaft hydraulic channel 82. One end of the output shaft lubrication channel 81 is connected to the lubrication channel 2 of another set of built-in oil passages, and one end of the output shaft hydraulic channel 82 is connected to the hydraulic channel 3 of another set of built-in oil passages.

[0042] The lubrication channel 2 is connected to the corresponding input shaft lubrication channel 71 to supply lubricating oil to the components on the input shaft 7, and the hydraulic channel 3 is connected to the corresponding input shaft hydraulic channel 72 to provide power for gear shifting on the shaft.

[0043] Similarly, the lubricating oil passage 2 is connected to the corresponding output shaft lubrication passage 81 to supply lubricating oil to the components on the output shaft 8, and the hydraulic oil passage 3 is connected to the corresponding output shaft hydraulic passage 82 to provide power for gear shifting on the shaft.

[0044] Based on the above technical solution, the input shaft 7 is provided with at least two input shaft hydraulic channels 72. One end of the input shaft lubrication channel 71 and one end of the at least two input shaft hydraulic channels 72 are spaced apart along the axial direction of the input shaft 7. At least two input shaft sealing rings are sleeved on the input shaft 7. The input shaft sealing rings are located between one end of an adjacent input shaft lubrication channel 71 and one end of an adjacent input shaft hydraulic channel 72, and between one end of two adjacent input shaft hydraulic channels 72.

[0045] The input shaft sealing ring is used to seal the inner wall of the mounting hole between the input shaft 7 and the rotating shaft, and to separate adjacent oil passages, ensuring that the oil passages do not interfere with each other and are supplied with oil independently during the rotation of the input shaft 7.

[0046] Based on the above technical solution, the output shaft 8 is provided with at least two output shaft hydraulic channels 82. One end of the output shaft lubrication channel 81 and one end of at least one output shaft hydraulic channel 82 are spaced apart along the axial direction of the output shaft 8. At least two output shaft sealing rings are sleeved on the output shaft 8. The output shaft sealing rings are located between one end of an adjacent output shaft lubrication channel 81 and one end of an adjacent output shaft hydraulic channel 82, and between one end of two adjacent output shaft hydraulic channels 82.

[0047] The output shaft sealing ring is used to seal the inner wall of the output shaft 8 and the shaft mounting hole, and to separate adjacent oil passages, ensuring that each oil passage does not interfere with each other and is supplied with oil independently during the rotation of the output shaft 8.

[0048] Specifically, annular grooves are provided on the outer walls of the input shaft 7 at one end of the input shaft lubrication channel 71 and the other end of the input shaft hydraulic channel 72, so that when the input shaft 7 rotates, the input shaft lubrication channel 71 and the input shaft hydraulic channel 72 can always be connected to the corresponding lubrication oil channel 2 and hydraulic oil channel 3.

[0049] Specifically, annular grooves are provided on the outer wall of the output shaft 8 at one end of the output shaft lubrication channel 81 and the output shaft hydraulic channel 82, so that when the output shaft 8 rotates, the output shaft lubrication channel 81 and the output shaft hydraulic channel 82 can always be connected to the corresponding lubrication oil channel 2 and hydraulic oil channel 3.

[0050] In one specific example, a first-gear, second-gear, and third-gear drive gear are mounted on the input shaft 7. The other ends of the three input shaft hydraulic channels 72 are respectively connected to the clutches or hydraulically driven components at the first-gear, second-gear, and third-gear drive gears. The other ends of the input shaft lubrication channels 71 are connected to the lubrication points at the first-gear, second-gear, and third-gear drive gears through multiple radially arranged input shaft radial holes.

[0051] The output shaft 8 is equipped with a first-gear driven gear, a second-gear driven gear, and a third-gear driven gear. The other end of the three hydraulic flow channels 82 on the output shaft is connected to the clutch or hydraulically driven component at the first-gear driven gear, the second-gear driven gear, and the third-gear driven gear, respectively. The other end of the output shaft lubrication flow channel 81 is connected to the lubrication location at the first-gear driven gear, the second-gear driven gear, and the third-gear driven gear, respectively, through multiple radial holes arranged along its radial direction.

[0052] Based on the above technical solution, the gearbox also includes a valve block 9, which is fixedly connected to the gearbox housing 1 and communicates with one end of the built-in oil passage assembly.

[0053] Among them, valve block 9 distributes the supplied hydraulic oil or lubricating oil to the corresponding oil passages of the built-in oil passage group; and provides pipeline interface to facilitate the connection between the gearbox housing 1 and the external oil supply pipeline.

[0054] Example 3

[0055] This embodiment also provides a tractor, including the gearbox described in Embodiment 2.

[0056] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0057] Furthermore, 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 utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" 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," "below," and "under" 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.

[0059] 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. In this specification, the illustrative expressions of the above terms 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 or examples described in this specification, as well as the features of different embodiments or examples.

[0060] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0061] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gearbox housing with integrated oil passages, characterized in that, At least two sets of internal oil passages are provided inside the gearbox housing (1). Each set of internal oil passages includes a lubricating oil passage (2) and at least one hydraulic oil passage (3). One end of the internal oil passage is connected to the outer wall of the gearbox housing (1), and the other end of the internal oil passage is connected to the shaft mounting hole on the gearbox housing (1).

2. The gearbox housing with integrated oil passages according to claim 1, characterized in that, The built-in oil passage assembly has two sets.

3. A gearbox housing with integrated oil passages according to claim 2, characterized in that, The gearbox housing (1) includes a first end wall (4), a second end wall (5), and a top wall (6). The upper ends of the first end wall (4) and the second end wall (5) are fixedly connected to the top wall (6) or integrally formed. The first end wall (4) and the second end wall (5) are provided with the shaft mounting hole. One end of the built-in oil passage group is connected to the top surface of the top wall (6). The other end of one set of the built-in oil passage group is connected to the shaft mounting hole on the first end wall (4), and the other end of the other set of the built-in oil passage group is connected to the shaft mounting hole on the second end wall (5).

4. A gearbox housing with integrated oil passages according to any one of claims 1-3, characterized in that, Each of the built-in oil passage groups includes one of the lubricating oil passages (2) and three of the hydraulic oil passages (3).

5. A gearbox, characterized in that, The gearbox housing includes the integrated oil passages as described in any one of claims 1-4.

6. A gearbox according to claim 5, characterized in that, It also includes an input shaft (7) and an output shaft (8), both of which are rotatably connected to the shaft mounting holes of the gearbox housing (1). The input shaft (7) is provided with an input shaft lubrication channel (71) and at least one input shaft hydraulic channel (72). One end of the input shaft lubrication channel (71) is connected to the lubrication channel (2) of one of the built-in oil passage groups, and one end of the input shaft hydraulic channel (72) is connected to the hydraulic channel (3) of one of the built-in oil passage groups. The output shaft (8) is provided with an output shaft lubrication channel (81) and at least one output shaft hydraulic channel (82). One end of the output shaft lubrication channel (81) is connected to the lubrication channel (2) of another built-in oil passage group, and one end of the output shaft hydraulic channel (82) is connected to the hydraulic channel (3) of another built-in oil passage group.

7. A gearbox according to claim 6, characterized in that, The input shaft (7) is provided with at least two input shaft hydraulic channels (72). One end of the input shaft lubrication channel (71) and one end of the at least two input shaft hydraulic channels (72) are spaced apart along the axial direction of the input shaft (7). At least two input shaft sealing rings are sleeved on the input shaft (7). The input shaft sealing rings are located between one end of an adjacent input shaft lubrication channel (71) and one end of an adjacent input shaft hydraulic channel (72), and between one end of two adjacent input shaft hydraulic channels (72).

8. A gearbox according to claim 6, characterized in that, The output shaft (8) is provided with at least two output shaft hydraulic channels (82). One end of the output shaft lubrication channel (81) and one end of at least one output shaft hydraulic channel (82) are spaced apart along the axial direction of the output shaft (8). At least two output shaft sealing rings are sleeved on the output shaft (8). The output shaft sealing rings are located between one end of an adjacent output shaft lubrication channel (81) and one end of an adjacent output shaft hydraulic channel (82), and between one end of two adjacent output shaft hydraulic channels (82).

9. A gearbox according to any one of claims 5-8, characterized in that, It also includes a valve block (9), which is fixedly connected to the gearbox housing (1) and communicates with one end of the built-in oil passage assembly.

10. A tractor, characterized in that, Including the gearbox as described in any one of claims 5-9.

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