Transmission main box forced lubricating oil pipe and transmission
By setting the first support component at the connection of the forced lubricating oil pipe of the transmission main box, the problems of large shaking and serious wear of the oil pipe are solved, and the stability of the oil pipe is improved and the service life of the oil pipe is extended.
Patent Information
- Application Number
- CN202420479364.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-03-12
AI Technical Summary
In the prior art, the forced lubricating oil pipe of the main box of the transmission is large in spacing between the support points at both ends and the shape of the oil pipe, causing the oil pipe to shake more after installation. In the long run, when the support points at both ends of the oil pipe wear, the shaking of the oil pipe increases, which may cause the oil pipe to Risk of interference with the upper intermediate shaft gear.
A forced lubricating oil pipe of the transmission main box is designed. By providing a first support assembly at the connection of the oil pipe, one end of the support assembly is connected to the oil pipe and the other end is connected to the middle partition wall of the transmission housing, the structural stability of the oil pipe is enhanced. sex.
By adding the first support assembly, the amount of shaking of the oil pipe is effectively reduced, the wear of the oil pipe at the support is reduced, the service life of the oil pipe is improved, and the risk of interference between the oil pipe and the upper intermediate shaft gear is avoided.
Smart Images
Figure CN222502611U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of transmission forced lubrication, and relates to a transmission main box forced lubrication oil pipe and a transmission. Background Art
[0002] At present, the application of forced lubrication system in transmission is becoming more and more extensive, among which the combination of integrated oil channel and oil pipe is the most commonly used oil circuit layout. For the dual intermediate shaft box transmission, the forced lubrication of each gear pair of the main box upper intermediate shaft assembly is particularly important. The upper intermediate shaft assembly of the main box of a certain 13-speed dual intermediate shaft box transmission adopts the long oil pipe spray method for forced lubrication. However, due to the large distance between the two installation support points at both ends of the main box oil pipe and the complex shape of the oil pipe, the oil pipe shakes greatly after installation. In the long run, when the wear of the support points at both ends of the oil pipe increases, the shaking of the oil pipe will continue to increase. Excessive shaking will bring the risk of interference between the oil pipe and the upper intermediate shaft gear, and cause great losses. Utility Model Content
[0003] In view of the problems existing in the prior art, the utility model provides a transmission main box forced lubrication oil pipe and a transmission, thereby solving the risk of interference between the oil pipe and the upper intermediate shaft gear caused by the large shaking of the oil pipe in the prior art.
[0004] The utility model is realized by the following technical solutions:
[0005] A transmission main box forced lubricating oil pipe, the forced lubricating oil pipe comprising a first connecting section and a second connecting section which are integrally connected;
[0006] A first support assembly is provided at the connection between the first connection section and the second connection section; one end of the first support assembly is connected to the forced lubrication oil pipe, and the other end is connected to the middle partition wall of the transmission housing;
[0007] The free end of the second connecting section is connected to the middle partition wall of the transmission housing and is communicated with the oil inlet passage on the transmission housing.
[0008] Preferably, the first support assembly is fixedly connected to the forced lubrication oil pipe and to the middle partition wall of the transmission housing.
[0009] Preferably, a mounting hole is provided on the middle partition wall of the transmission housing, and the first supporting assembly is arranged in cooperation with the mounting hole.
[0010] Preferably, the opening of the mounting hole is provided with a chamfer.
[0011] Preferably, the first supporting assembly is interference fit with the mounting hole.
[0012] Preferably, the first supporting assembly is a hollow tube.
[0013] Preferably, the wall thickness of the first supporting component is 1.5-3 mm.
[0014] Preferably, the second connecting section includes a first straight pipe section, an arc section and a second straight pipe section which are integrally connected; the free end of the first straight pipe section is connected to the first connecting section, and the free end of the second straight pipe section is connected to the middle partition wall of the transmission housing.
[0015] Preferably, the first supporting assembly is arranged in parallel with the second straight pipe segment.
[0016] A transmission comprises the above-mentioned transmission main box forced lubrication oil pipe.
[0017] Compared with the prior art, the utility model has the following beneficial technical effects:
[0018] The utility model discloses a transmission main box forced lubricating oil pipe, which comprises a first connecting section and a second connecting section which are connected in an integral manner; a first supporting assembly is provided at the connection between the first connecting section and the second connecting section; one end of the first supporting assembly is connected to the forced lubricating oil pipe, and the other end is connected to the middle partition wall of the transmission housing; the free end of the second connecting section is connected to the middle partition wall of the transmission housing, and is connected to the oil inlet channel on the transmission housing. The provision of the first supporting assembly effectively enhances the structural stability of the forced lubricating oil pipe, reduces the shaking amount of the forced lubricating oil pipe, and also greatly reduces the wear of the oil pipe at the support, which is conducive to improving the service life of the oil pipe.
[0019] Furthermore, the first support assembly is fixedly connected to the forced lubrication oil pipe and the middle partition wall of the transmission housing, which effectively improves the stability of the first support assembly.
[0020] Furthermore, a mounting hole is provided on the middle partition wall of the transmission housing, and the first support assembly is arranged in cooperation with the mounting hole. The arrangement of the mounting hole here facilitates the installation of the first support assembly.
[0021] Furthermore, the opening of the mounting hole is provided with a chamfer, and the chamfer design facilitates the installation of the first supporting assembly.
[0022] Furthermore, the first supporting assembly is interference-fitted with the mounting hole, so that the installation of the first supporting assembly can be more stable.
[0023] Furthermore, the first supporting assembly is a hollow tube. The first supporting assembly of the hollow tube structure improves the stability of the oil pipe while minimizing excessive increase in the weight of the device.
[0024] Furthermore, the wall thickness of the first support assembly is 1.5-3 mm, which effectively controls the weight of the first support assembly.
[0025] Furthermore, the first supporting assembly is arranged in parallel with the second straight pipe segment, so that the stability of the structure is stronger. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0027] Figure 1 It is a schematic diagram of the structure of the forced lubrication oil pipe of the transmission main box in the prior art, wherein (a) is a front view, (b) is a top view, and (c) is a left view;
[0028] Figure 2 It is a schematic diagram of the assembly of the forced lubrication oil pipe of the transmission main box in the prior art;
[0029] Figure 3 The schematic diagram of the structure of the forced lubrication oil pipe of the transmission main box in the utility model, wherein (a) is the front view, (b) is the top view, and (c) is the left view;
[0030] Figure 4 It is a schematic diagram of the assembly of the forced lubrication oil pipe of the transmission main box in the utility model.
[0031] Wherein: 1. transmission housing, 2. upper intermediate shaft assembly, 3. forced lubrication oil pipe, 31. first connecting section, 32. second connecting section, 33. first supporting assembly, 11. mounting hole, 12. oil inlet channel, 321. first straight pipe section, 322. arc section, 323. second straight pipe section, 4. oil pipe in the prior art. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0035] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0036] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0037] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0038] The utility model is further described in detail below with reference to the accompanying drawings:
[0039] like Figure 1As shown, it is a schematic diagram of the structure of the oil pipe 4 in the prior art. The oil pipe 4 in the prior art has an outer diameter of 10 mm, an inner diameter of 8 mm, an axial length of 496 mm, a longitudinal length of 146.8 mm, and a vertical length of 56.8 mm. The oil pipe 4 in the prior art is provided with 8 radial oil holes, and the 8 oil holes correspond one by one to the relative gear meshing positions on the upper intermediate shaft assembly 2 and precisely spray lubricating oil.
[0040] Figure 2 It is a schematic diagram of the forced lubrication oil pipe after assembly in the prior art. The front end of the oil pipe is inserted into the placement hole at the front end of the transmission housing 1, which is marked as point A. The rear end of the oil pipe is inserted into the placement hole of the middle partition wall of the transmission housing 1, which is marked as point B. The axial distance between point A and point B is 469.2mm, the longitudinal distance between point A and point B is 126.26mm, and the vertical distance between point A and point B is 4.66mm. It can be seen that the support spacing between point A and point B in the axial and longitudinal directions is large, especially the axial span is too long. In actual packaging, it is found that the axial shaking amount of the oil pipe is also the largest; in the long run, when the wear of the support points at both ends of the oil pipe increases, the shaking of the oil pipe will continue to increase. Excessive shaking will bring the risk of interference between the oil pipe and the upper gear of the upper intermediate shaft assembly 2, and cause great losses. Therefore, it is necessary to optimize the structure to restrict the shaking amount of the oil pipe to avoid a series of risks and losses.
[0041] like Figure 3 As shown, a transmission main box forced lubrication oil pipe of the utility model is provided, and the forced lubrication oil pipe 3 includes a first connecting section 31 and a second connecting section 32 which are integrally connected; a first supporting assembly 33 is provided at the connection between the first connecting section 31 and the second connecting section 32; one end of the first supporting assembly 33 is connected to the forced lubrication oil pipe 3, and the other end is connected to the middle partition wall of the transmission housing 1; the free end of the second connecting section 32 is connected to the middle partition wall of the transmission housing 1, and is connected to the oil inlet channel 12 on the transmission housing 1.
[0042] The first support assembly 33 is fixedly connected to the forced lubrication oil pipe 3 and the middle partition wall of the transmission housing 1 .
[0043] In a preferred embodiment, a mounting hole 11 is provided on the middle partition wall of the transmission housing 1, and the first support assembly 33 is arranged in cooperation with the mounting hole 11. In addition, a chamfer is provided at the opening of the mounting hole 11. The first support assembly 33 is interference-fitted with the mounting hole 11.
[0044] In another more preferred embodiment, the first support component 33 is a hollow tube. The wall thickness of the first support component 33 is 1.5-3 mm.
[0045] In more detail, the second connecting section 32 includes a first straight pipe section 321, an arc section 322 and a second straight pipe section 323 which are connected in an integral manner; the free end of the first straight pipe section 321 is connected to the first connecting section 31, and the free end of the second straight pipe section 323 is connected to the middle partition wall of the transmission housing 1. The first supporting assembly 33 is arranged in parallel with the second straight pipe section 323, which effectively improves the structural stability of the device.
[0046] That is, on the basis of the original structure, the utility model adds an auxiliary support, marked as point C, at a position parallel to the spatial support B at the rear end of the forced lubricating oil pipe 3. The axial distance between point B and point C is 0 mm, the longitudinal distance between point B and point C is 40.38 mm, and the vertical distance between point B and point C is 112.25 mm. The auxiliary support section is a hollow tube with an outer diameter of 10 mm and an inner diameter of 8 mm. This section is fixed to the forced lubricating oil pipe 3 by welding, but is not connected to the forced lubricating oil pipe 3. After welding, the newly added auxiliary support section ensures parallelism with the support section at B.
[0047] Figure 4 It is a schematic diagram of the optimized forced lubrication oil pipe assembly. Since the forced lubrication oil pipe 3 has an additional auxiliary support, a mounting hole 11 of φ11 is machined at the position corresponding to the middle partition wall of the transmission housing 1 for the insertion of the auxiliary support section. The hole mouth is chamfered at 1.5x45° to facilitate the smooth insertion of the auxiliary support section. After the optimized forced lubrication oil pipe 3 is assembled, there are three supports at points A, B and C, which greatly restricts the shaking of the forced lubrication oil pipe 3, especially the axial shaking of the forced lubrication oil pipe 3. At the same time, the reduction in the shaking amount also greatly reduces the wear of the forced lubrication oil pipe 3 at the support, which is beneficial to improving the service life of the forced lubrication oil pipe 3.
[0048] The utility model adds auxiliary support to the forced lubricating oil pipe 3 of the double intermediate shaft box transmission, and optimizes the structure of the forced lubricating oil pipe 3. Compared with the original structure, the added auxiliary support section is fixed to the forced lubricating oil pipe 3 by welding; the assembly method is basically the same as the original one, except that the B section and the C section of the forced lubricating oil pipe 3 need to be inserted into the corresponding placement holes of the middle partition wall of the transmission case 1 at the same time. The newly added auxiliary support section is not connected to the oil pipe 3, so the flow path of the lubricating oil in the oil pipe 3 does not change at all. The flow path of the lubricating oil is as follows: Figure 2 and Figure 3 Middle arrow.
[0049] The local structure of the forced lubrication oil pipe in the utility model is optimized, which greatly reduces its shaking amount and also reduces the wear of the oil pipe at the support, which is beneficial to increase the service life of the oil pipe. The local structure of the forced lubrication oil pipe in the utility model is optimized, which reduces its shaking amount and enhances the stability of the forced lubrication oil pipe after installation, which effectively avoids the risk of interference between the oil pipe and the upper intermediate shaft gear.
[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A transmission main box forced lubrication oil pipe, characterized in that: The forced lubrication oil pipe (3) comprises a first connecting section (31) and a second connecting section (32) which are integrally connected. A first support assembly (33) is provided at the connection point between the first connection section (31) and the second connection section (32); one end of the first support assembly (33) is connected to the forced lubrication oil pipe (3), and the other end is connected to the middle partition wall of the transmission housing (1); The free end of the second connecting section (32) is connected to the middle partition wall of the transmission housing (1), and is communicated with the oil inlet passage (12) on the transmission housing (1).
2. A transmission main box forced lubrication oil pipe according to claim 1, characterized in that: The first support assembly (33) is fixedly connected to the forced lubrication oil pipe (3) and to the middle partition wall of the transmission housing (1).
3. The transmission main box forced lubrication oil pipe according to claim 1, characterized in that: A mounting hole (11) is provided on the middle partition wall of the transmission housing (1), and the first support assembly (33) is arranged in cooperation with the mounting hole (11).
4. A transmission main box forced lubrication oil pipe according to claim 3, characterized in that: The opening of the mounting hole (11) is provided with a chamfer.
5. The transmission main box forced lubrication oil pipe according to claim 3, characterized in that: The first supporting assembly (33) is interference fit with the mounting hole (11).
6. The transmission main box forced lubrication oil pipe according to claim 1, characterized in that: The first supporting component (33) is a hollow tube.
7. The transmission main box forced lubrication oil pipe according to claim 1, characterized in that: The wall thickness of the first supporting component (33) is 1.5-3 mm.
8. The transmission main box forced lubrication oil pipe according to claim 1, characterized in that: The second connecting section (32) comprises a first straight pipe section (321), an arc section (322) and a second straight pipe section (323) which are integrally connected; the free end of the first straight pipe section (321) is connected to the first connecting section (31), and the free end of the second straight pipe section (323) is connected to the middle partition wall of the transmission housing (1).
9. The transmission main box forced lubrication oil pipe according to claim 8, characterized in that: The first supporting assembly (33) and the second straight pipe section (323) are arranged in parallel.
10. A transmission, characterized in that: A transmission main box forced lubrication oil pipe comprising any one of claims 1 to 9.