Rear axle shell internally integrated with oil duct, rear axle and tractor

Abstract

The utility model relates to a rear axle shell internally integrated with an oil duct, a rear axle and a tractor, and relates to the field of rear axle shells, a fixing seat and a rear axle main shell are fixedly connected or integrally formed, the outer wall of the rear axle main shell is provided with a lubricating oil inlet and a hydraulic oil inlet, the fixing seat is annular, and the inner wall of the fixing seat is provided with a lubricating oil outlet and a hydraulic oil outlet; the lubricating oil inlet and the lubricating oil outlet are communicated through lubricating oil channels formed in the rear axle main shell and the fixing base, and the hydraulic oil inlet and the hydraulic oil outlet are communicated through hydraulic oil channels formed in the rear axle main shell and the fixing base. The rear axle has the advantages that the special built-in oil duct is designed in the rear axle shell, cooling can be effectively carried out, the number of parts of a whole vehicle is reduced, manufacturing and assembling complexity and cost are reduced, 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] This utility model relates to the field of rear axle housings, specifically to a rear axle housing with internally integrated oil passages, a rear axle, and a tractor. Background Technology

[0002] Currently, the rear axle oil lines on vehicles are all exposed components. There are many lines and a large number of parts used, which takes up a lot of space in the vehicle. The lines are messy, which seriously affects the appearance of the vehicle. In addition, the cost of using them is high, and the lines also have problems such as aging and poor sealing. Utility Model Content

[0003] The technical problem to be solved by this utility model is how to reduce the exposure of the rear axle oil pipe.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A rear axle housing with internally integrated oil channels includes a rear axle main housing and a fixed seat. The fixed seat is fixedly connected to or integrally formed with the rear axle main housing. The outer wall of the rear axle main housing is provided with a lubricating oil inlet and a hydraulic oil inlet. The fixed seat is annular, and its inner wall is provided with a lubricating oil outlet and a hydraulic oil outlet. The lubricating oil inlet and the lubricating oil outlet are connected through lubricating oil channels formed in the rear axle main housing and the fixed seat. The hydraulic oil inlet and the hydraulic oil outlet are connected through hydraulic oil channels formed in the rear axle main housing and the fixed seat.

[0005] The beneficial effects of this utility model are as follows: the mounting base is used to install the gear shaft, and by integrating lubrication oil passages and hydraulic oil passages inside the rear axle housing, hydraulic oil and lubricating oil are provided to the gear shaft. The specially designed built-in oil passages within the rear axle housing effectively cool the gear shaft, while also effectively reducing the number of vehicle parts, lowering manufacturing and assembly complexity and costs, reducing the overall vehicle weight, improving energy efficiency, and reducing fuel consumption.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the rear axle housing with internal integrated oil passages also includes a connecting column, the fixed seat is fixedly connected to the rear axle main housing through the connecting column, and the lubricating oil passage and the hydraulic oil passage pass through the connecting column.

[0008] The advantage of adopting the above-mentioned further solution is that by setting a connecting column of appropriate length, the mounting base is ensured to be located in a suitable position within the rear axle main housing.

[0009] Furthermore, the diameter of the lubricating oil passage is larger than the diameter of the hydraulic oil passage.

[0010] Furthermore, the fixing base is provided in multiple ways, and each fixing base is provided with at least one lubricating oil outlet and at least one hydraulic oil outlet. The number of lubricating oil inlets is the same as the total number of lubricating oil outlets, and they are connected one-to-one through the lubricating oil passage. The number of hydraulic oil inlets is the same as the total number of hydraulic oil outlets, and they are connected one-to-one through the hydraulic oil passage.

[0011] Furthermore, there are two fixing seats, each of which has one lubricating oil outlet and three hydraulic oil outlets.

[0012] Furthermore, the lubrication channel includes a first vertical lubrication section, a horizontal lubrication section, and a second vertical lubrication section, and the lubrication oil inlet, the first vertical lubrication section, the horizontal lubrication section, the second vertical lubrication section, and the lubrication oil outlet are connected in sequence.

[0013] Furthermore, the hydraulic oil passage includes a first vertical hydraulic section, a horizontal hydraulic section, and a second vertical hydraulic section. The hydraulic oil inlet, the first vertical hydraulic section, the horizontal hydraulic section, the second vertical hydraulic section, and the hydraulic oil outlet are connected in sequence. The first vertical hydraulic section is parallel to the first vertical lubrication section, the horizontal lubrication section is parallel to the horizontal hydraulic section, and the second vertical lubrication section is parallel to the second vertical hydraulic section.

[0014] The advantages of adopting the above-mentioned further scheme are: the lubricating oil passage and the hydraulic oil passage adopt a multi-segment structure, which makes it easy to arrange multiple lubricating oil inlets and hydraulic oil inlets in a concentrated manner, so as to directly connect with the control valve block of the rear axle, and also avoid structural interference between multiple oil passages.

[0015] This utility model also provides a rear axle, including the rear axle housing with internally integrated oil passages, and a gear shaft, which is rotatably connected to a fixed seat.

[0016] The beneficial effects are: the gear shaft is installed in the fixed seat, and by integrating lubrication oil passages and hydraulic oil passages inside the rear axle housing, hydraulic oil and lubricating oil are provided to the gear shaft, which can effectively cool the gear shaft. At the same time, it can effectively reduce the number of parts in the whole vehicle, reduce the complexity and cost of manufacturing and assembly, reduce the weight of the whole vehicle, improve the energy utilization rate of the whole vehicle, and reduce fuel consumption.

[0017] Furthermore, the rear axle also includes a control valve block, which is fixedly connected to the rear axle main housing and communicates with the lubrication oil passage and the hydraulic oil passage.

[0018] The beneficial effect of adopting the above-mentioned further solution is that the control valve block distributes the appropriate flow rate of lubricating oil to the lubricating oil passage and the hydraulic oil to the hydraulic oil passage according to the actual situation.

[0019] This utility model also provides a tractor, including the aforementioned rear axle. Attached Figure Description

[0020] Figure 1 This is a partial three-dimensional view of a rear axle according to the present invention;

[0021] Figure 2 This is a partial sectional view of a rear axle according to the present invention;

[0022] Figure 3 for Figure 2 A cross-sectional view of a rear axle;

[0023] Figure 4 This is a perspective view of the oil passages in one type of rear axle housing with internally integrated oil passages according to the present invention. To avoid confusion, some oil passages in the figure are represented by thick solid lines.

[0024] Figure 5 This is a schematic diagram of the connection relationship of a rear axle according to the present invention. The double-dotted line in the figure represents the connection relationship.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Rear axle main housing; 2. Mounting seat; 3. Lubrication oil passage; 31. First vertical lubrication section; 32. Horizontal lubrication section; 33. Second vertical lubrication section; 4. Hydraulic oil passage; 41. First vertical hydraulic section; 42. Horizontal hydraulic section; 43. Second vertical hydraulic section; 5. Connecting column; 6. Control valve block; 7. Driven gear shaft; 701. High gear pressure oil passage; 702. Reverse gear pressure oil passage; 703. Low gear pressure oil passage; 704. Driven shaft lubrication oil passage; 8. Drive gear shaft; 801. Drive shaft lubrication oil passage; 802. I gear pressure oil passage; 803. II gear pressure oil passage; 804. III gear pressure oil passage. Detailed Implementation

[0027] 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.

[0028] Example 1

[0029] like Figures 1-5As shown, this embodiment provides a rear axle housing with internally integrated oil channels, including a rear axle main housing 1 and a fixing seat 2. The fixing seat 2 is fixedly connected to or integrally formed with the rear axle main housing 1. The outer wall of the rear axle main housing 1 is provided with a lubricating oil inlet and a hydraulic oil inlet. The fixing seat 2 is annular, and its inner wall is provided with a lubricating oil outlet and a hydraulic oil outlet. The lubricating oil inlet and the lubricating oil outlet are connected by a lubricating oil channel 3 formed in the rear axle main housing 1 and the fixing seat 2. The hydraulic oil inlet and the hydraulic oil outlet are connected by a hydraulic oil channel 4 formed in the rear axle main housing 1 and the fixing seat 2.

[0030] The mounting bracket 2 is used to install the gear shaft. Hydraulic oil and lubricating oil are supplied to the gear shaft through integrated lubrication channels 3 and 4 within the rear axle housing. The specially designed built-in oil channels within the rear axle housing effectively cool the gear shaft, while simultaneously reducing the number of vehicle parts, lowering manufacturing and assembly complexity and costs, reducing overall vehicle weight, improving energy efficiency, and reducing fuel consumption.

[0031] Specifically, such as Figure 3 and Figure 4 As shown, the inner wall of the rear axle main housing 1 is partially thickened to form a cuboid block, and the lubricating oil passage 3 and hydraulic oil passage 4 are arranged inside the cuboid block. Alternatively, the cuboid block can also be of other shapes.

[0032] The inner wall of the fixed base 2 or the outer wall of the corresponding gear shaft is provided with an annular oil guide groove along the circumference. The oil guide groove is connected to the lubricating oil passage 3, the hydraulic oil passage 4 and the oil passage inside the gear shaft, so that the gear shaft can always be connected to the lubricating oil passage 3 and the hydraulic oil passage 4 during rotation.

[0033] Based on the above technical solution, the rear axle housing with internal integrated oil passages also includes a connecting column 5. The fixed seat 2 is fixedly connected to the rear axle main housing 1 through the connecting column 5, and the lubricating oil passage 3 and the hydraulic oil passage 4 pass through the connecting column 5.

[0034] A connecting column 5 of appropriate length is provided to ensure that the mounting base 2 is located in the appropriate position within the rear axle main housing 1.

[0035] In other words, the two ends of the connecting column 5 are fixedly connected to the fixed seat 2 and the rear axle main housing 1 respectively, and the lubricating oil passage 3 and the hydraulic oil passage 4 pass through the rear axle main housing 1, the connecting column 5 and the fixed seat 2 in sequence.

[0036] Based on the above technical solution, the diameter of the lubricating oil passage 3 is larger than the diameter of the hydraulic oil passage 4.

[0037] Based on the above technical solution, the fixed base 2 is provided in multiple ways, and each fixed base 2 is provided with at least one lubricating oil outlet and at least one hydraulic oil outlet. The number of lubricating oil inlets is the same as the total number of lubricating oil outlets, and they are connected one-to-one through the lubricating oil passage 3. The number of hydraulic oil inlets is the same as the total number of hydraulic oil outlets, and they are connected one-to-one through the hydraulic oil passage 4.

[0038] For example, such as Figure 4 As shown, there are two fixed seats 2. One fixed seat 2 has one lubricating oil outlet and three hydraulic oil outlets, and the other fixed seat 2 has one lubricating oil outlet and one hydraulic oil outlet.

[0039] Based on the above technical solutions, such as Figure 5 As shown, there are two fixed seats 2, each fixed seat 2 having one lubricating oil outlet and three hydraulic oil outlets.

[0040] Based on the above technical solution, the lubrication channel 3 includes a first vertical lubrication section 31, a horizontal lubrication section 32, and a second vertical lubrication section 33, and the lubrication oil inlet, the first vertical lubrication section 31, the horizontal lubrication section 32, the second vertical lubrication section 33, and the lubrication oil outlet are connected in sequence.

[0041] Alternatively, the lubricating oil passage 3 may only include the first vertical lubrication section 31, that is, the lubricating oil passage 3 is a straight flow channel, or the lubricating oil passage 3 may be divided into more sections.

[0042] Based on the above technical solution, the hydraulic oil passage 4 includes a first vertical hydraulic section 41, a horizontal hydraulic section 42, and a second vertical hydraulic section 43. The hydraulic oil inlet, the first vertical hydraulic section 41, the horizontal hydraulic section 42, the second vertical hydraulic section 43, and the hydraulic oil outlet are connected in sequence. The first vertical hydraulic section 41 is parallel to the first vertical lubrication section 31, the horizontal lubrication section 32 is parallel to the horizontal hydraulic section 42, and the second vertical lubrication section 33 is parallel to the second vertical hydraulic section 43.

[0043] The lubricating oil passage 3 and the hydraulic oil passage 4 adopt a multi-segment structure, which facilitates the centralized arrangement of multiple lubricating oil inlets and hydraulic oil inlets, so as to directly connect with the control valve block 6 of the rear axle, and also avoids structural interference between multiple oil passages.

[0044] Alternatively, the hydraulic passage 4 may consist only of the first vertical hydraulic section 41, i.e., the hydraulic passage 4 is a straight flow channel, or the hydraulic passage 4 may be divided into more sections.

[0045] Example 2

[0046] This embodiment also provides a rear axle, including the rear axle housing with internally integrated oil passages as described in Embodiment 1, and a gear shaft, which is rotatably connected to the fixed seat 2.

[0047] The gear shaft is installed in the fixed seat 2. By integrating the lubrication oil passage 3 and hydraulic oil passage 4 inside the rear axle housing, hydraulic oil and lubricating oil are provided to the gear shaft, which can effectively cool the gear shaft. At the same time, it can effectively reduce the number of parts in the whole vehicle, reduce the complexity and cost of manufacturing and assembly, reduce the weight of the whole vehicle, improve the energy utilization rate of the whole vehicle, and reduce fuel consumption.

[0048] In one specific example, such as Figure 1 and Figure 5 As shown, there are two mounting bases 2, each with one lubricating oil outlet and three hydraulic oil outlets. There are two gear shafts, a driven gear shaft 7 and a driving gear shaft 8. The driven gear shaft 7 has a high-gear pressure oil passage 701, a reverse pressure oil passage 702, a low-gear pressure oil passage 703, and a driven shaft lubrication oil passage 704. Each of these passages is connected to a hydraulic oil passage 4, meaning the mounting base 2 for the driven gear shaft 7 has a total of three hydraulic oil passages 4. The driven shaft lubrication oil passage 704 is connected to one lubrication oil passage 3. The drive gear shaft 8 is provided with a drive shaft lubrication oil passage 801, a first-gear pressure oil passage 802, a second-gear pressure oil passage 803, and a third-gear pressure oil passage 804. Each of the first-gear pressure oil passage 802, the second-gear pressure oil passage 803, and the third-gear pressure oil passage 804 is connected to a hydraulic oil passage 4. That is, the mounting base 2 for mounting the drive gear shaft 8 is provided with a total of three hydraulic oil passages 4. The drive shaft lubrication oil passage 801 is connected to a lubrication oil passage 3.

[0049] Based on the above technical solution, the rear axle also includes a control valve block 6, which is fixedly connected to the rear axle main housing 1 and communicates with the lubricating oil passage 3 and the hydraulic oil passage 4.

[0050] The control valve block 6 distributes lubricating oil of appropriate flow rate to the lubricating oil passage 3 and hydraulic oil to the hydraulic oil passage 4 according to the actual situation.

[0051] Specifically, the control valve block 6 has several control flow channels that correspond one-to-one with and are connected to the lubricating oil passage 3 and the hydraulic oil passage 4.

[0052] Example 3

[0053] This utility model also provides a tractor, including the rear axle described in Embodiment 2.

[0054] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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 rear axle housing with internal integrated oil passages, characterized by, The rear axle housing comprises a rear axle main housing (1) and a fixing seat (2) fixedly connected with or integrally formed with the rear axle main housing (1), an outer wall of the rear axle main housing (1) is provided with a lubricating oil inlet and a hydraulic oil inlet, the fixing seat (2) is annular, an inner wall of the fixing seat (2) is provided with a lubricating oil outlet and a hydraulic oil outlet, the lubricating oil inlet and the lubricating oil outlet are communicated through a lubricating oil channel (3) formed in the rear axle main housing (1) and the fixing seat (2), and the hydraulic oil inlet and the hydraulic oil outlet are communicated through a hydraulic oil channel (4) formed in the rear axle main housing (1) and the fixing seat (2).

2. The internally integrated oil passage rear axle housing of claim 1, wherein, The fixing seat (2) and the rear axle main housing (1) are fixedly connected through a connecting column (5), and the lubricating oil channel (3) and the hydraulic oil channel (4) pass through the connecting column (5).

3. The internally-oil-channelled rear axle housing of claim 1, wherein, The diameter of the lubricating oil channel (3) is greater than the diameter of the hydraulic oil channel (4).

4. The internally-oiled rear axle housing of claim 1, wherein: The fixing seat (2) is provided with a plurality of fixing seats (2), each of the fixing seats (2) is provided with at least one lubricating oil outlet and at least one hydraulic oil outlet, the number of the lubricating oil inlets is the same as the total number of the lubricating oil outlets, and the lubricating oil inlets are communicated one by one through the lubricating oil channel (3); the number of the hydraulic oil inlets is the same as the total number of the hydraulic oil outlets, and the hydraulic oil inlets are communicated one by one through the hydraulic oil channel (4).

5. The internally-oil-channelled rear axle housing of claim 4, wherein, The fixing seat (2) is provided with two fixing seats (2), each of the fixing seats (2) is provided with one lubricating oil outlet and three hydraulic oil outlets.

6. The internally integrated oil passage rear housing of any one of claims 1-5, wherein, The lubricating oil channel (3) comprises a lubricating first vertical section (31), a lubricating horizontal section (32) and a lubricating second vertical section (33), and the lubricating oil inlet, the lubricating first vertical section (31), the lubricating horizontal section (32), the lubricating second vertical section (33) and the lubricating oil outlet are communicated in sequence.

7. The internally-oiled rear axle housing of claim 6 wherein, The hydraulic oil channel (4) comprises a hydraulic first vertical section (41), a hydraulic horizontal section (42) and a hydraulic second vertical section (43), and the hydraulic oil inlet, the hydraulic first vertical section (41), the hydraulic horizontal section (42), the hydraulic second vertical section (43) and the hydraulic oil outlet are communicated in sequence, the hydraulic first vertical section (41) is parallel to the lubricating first vertical section (31), the lubricating horizontal section (32) is parallel to the hydraulic horizontal section (42), and the lubricating second vertical section (33) is parallel to the hydraulic second vertical section (43).

8. A rear axle, characterized in that The rear axle housing with the internal integrated oil channel as claimed in any one of claims 1-7 further comprises a gear shaft rotationally connected with the fixing seat (2).

9. A rear axle as set forth in claim 8 wherein, The rear axle housing further comprises a control valve block (6) fixedly connected with the rear axle main housing (1) and communicated with the lubricating oil channel (3) and the hydraulic oil channel (4).

10. A tractor characterised in that, The rear axle as claimed in claim 8 or 9 is provided.

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