Oil collecting structure of shaft end bearing at upper bearing position of shell supporting frame in gearbox

Abstract

The utility model discloses an oil collecting structure of a shaft end bearing at a bearing position on a shell supporting frame in a gearbox, a through hole leading from the bearing position to the side wall of the supporting frame is formed in the back face of the bearing position, and an oil collecting groove which protrudes outwards, is provided with an upward groove opening and is used for collecting splashing lubricating oil is formed in the edge of the through hole in the side wall of the supporting frame. Lubricating oil in the oil collecting groove can flow into the bearing position through the through hole. The oil collecting groove comprises a groove bottom and an outer groove wall, the groove bottom is in a semi-ring shape which is stretched outwards from the side wall of the supporting frame and is coaxial with the bearing position, and the outer groove wall is located on the outer side edge of the groove bottom and integrally formed with the groove bottom. The oil supply structure has the advantages that the oil collecting groove can be constructed in a small range of the side wall of the supporting frame on the back face of the bearing position, the oil collecting groove can be directly communicated with the bearing position through the through hole, and the problem of constructing the oil supply structure on the supporting frame is solved in a very simple mode.

Description

Technical Field

[0001] The utility model relates to an oil collecting structure of a shaft end bearing at a bearing position on a shell support frame in a gearbox, belonging to the technical field of gearbox lubrication. Background Art

[0002] The gearbox of commercial vehicles (heavy load) generally has an intermediate housing, and the inner wall of the intermediate housing is provided with a transmission shaft support frame that divides the gearbox inner cavity into a front chamber and a rear chamber. The transmission shaft support frame is provided with a bearing position at one end of the transmission shaft in the front chamber and a bearing position at one end of the transmission shaft in the rear chamber. The bottom of the front chamber and the rear chamber has a certain depth for the gears to stir up the splashing lubricating oil. Under the stirring of the high-speed rotating gears in the front chamber and the rear chamber, a large amount of splashing lubricating oil is formed in the front chamber and the rear chamber.

[0003] The lubrication of the bearing in the traditional gearbox bearing position is generally to set an oil blocking and collecting device and a transmission flow channel on the wall of the side where the shaft of the bearing position is located, and introduce the collected splashing lubricating oil into the bearing position, thereby lubricating the bearing in the bearing position. Since the transmission shaft support frame is provided with a hole structure that communicates on both sides for the sake of lightweight and the need for lubricating oil to communicate on both sides, its front and rear sides are not complete wall surfaces, so it is very difficult to set traditional oil blocking and collecting devices and transmission flow channels on both sides of the transmission shaft support frame.

[0004] The present application aims to solve the above-mentioned problems.

[0005] In order to be more targeted in solving the above problems, we conducted relevant searches and did not obtain any patent documents that are strongly related to this application. Utility Model Content

[0006] The technical problem to be solved by the utility model is: how to set an oil supply structure for a bearing position arranged on a transmission shaft support frame.

[0007] In view of the above problems, the technical solution proposed by the utility model is:

[0008] An oil collecting structure for a shaft end bearing at a bearing position on a housing support frame in a gearbox, wherein a through hole leading from the bearing position to a side wall of the support frame is provided on the back side of the bearing position on the support frame, and an oil collecting groove with an outwardly protruding notch facing upward for collecting splashed lubricating oil is provided on the edge of the through hole on the side wall of the support frame, wherein the lubricating oil in the oil collecting groove can flow from the through hole into the bearing position.

[0009] Furthermore, the oil collecting groove includes a groove bottom and an outer groove wall, the groove bottom is a semi-ring extending outward from the side wall of the support frame and coaxial with the bearing seat, and the outer groove wall is located on the outer side of the groove bottom and is integrally formed with the groove bottom.

[0010] Furthermore, the outer groove wall is semi-annular.

[0011] Furthermore, the outer groove wall is in the shape of a circular plate.

[0012] Furthermore, an annular rib extending radially inward is provided on the inner wall of the through hole between the oil collecting groove and the bearing seat, which is used to prevent the lubricating oil in the bearing seat from being thrown out of the through hole by the high-speed rotating bearing.

[0013] Furthermore, the inner diameter of the annular rib is equal to the inner diameter of the semi-annular groove bottom. Beneficial Effects

[0014] An oil collecting groove can be constructed using a smaller area of ​​the support frame side wall behind the bearing seat, and the oil collecting groove can be directly connected to the bearing seat through a through hole, thereby solving the problem of constructing an oil supply structure on the support frame in a very simple way. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional schematic diagram of a support frame of a housing in Embodiment 1;

[0016] Figure 2 It is a horizontal cross-sectional schematic diagram of a support frame for assembling an intermediate shaft and an output shaft in Embodiment 1;

[0017] Figure 3 This is a schematic horizontal cross-section diagram of the oil collecting structure described in Example 1;

[0018] Figure 4 It is a three-dimensional schematic diagram of the oil collecting structure described in Example 2.

[0019] In the figure: 1, support frame; 2, bearing position; 3, through hole; 4, oil collecting groove; 401, groove bottom; 402, outer groove wall; 5, annular rib; 6, bearing; 7, intermediate shaft; 8, output shaft. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings:

[0021] like Figure 1 , 2 As shown, on the support frame 1 of the middle housing, there are bearing positions 2 for the intermediate shaft 7 in the front chamber and bearing positions 2 for the output shaft 8 in the rear chamber. The back side of the bearing position 2 mentioned below refers to the back side of the side where the shaft of the bearing 6 of the bearing position 2 is located. Embodiment 1

[0022] like Figure 1As shown in FIG. 3 , an oil collecting structure of a shaft end bearing on a bearing position on a housing support frame in a gearbox is provided. On the back of the bearing position 2 on the support frame, a through hole 3 is provided which leads from the bearing position 2 to the side wall of the support frame 1. On the edge of the through hole 3 on the side wall of the support frame 1, an oil collecting groove 4 with an outwardly protruding notch and upwardly projecting for collecting splashing lubricating oil is provided. The lubricating oil in the oil collecting groove 4 can flow from the through hole 3 into the bearing position 2. Since there is splashing lubricating oil in both the front and rear chambers in the gearbox, no matter whether the oil collecting groove 4 is located on the front side wall or the rear side wall of the support frame 1, it can receive a sufficient amount of Feijian lubricating oil to provide lubrication guarantee for the corresponding bearing position 2, thus solving the problem that it is difficult to set an oil blocking and collecting device and a transmission flow channel on the support frame in the traditional way.

[0023] The oil collecting groove 4 includes a groove bottom 401 and an outer groove wall 402, wherein the groove bottom 401 is a semi-ring extending outward from the side wall of the support frame 1 and coaxial with the bearing position 2, and the outer groove wall 402 is located at the outer side of the groove bottom 401 and is integrally formed with the groove bottom 401. In this way, there is no need to make relevant arrangements in a large area beside the bearing position 2.

[0024] The outer groove wall 402 is semi-annular.

[0025] Furthermore, an annular rib 5 extending radially inward is provided on the inner wall of the through hole 3 between the oil collecting groove 4 and the bearing position 2, which is used to prevent the lubricating oil in the bearing position 2 from being thrown out of the through hole 3 by the high-speed rotating inner ring of the bearing. In this way, the lubricating oil can be forced to flow from one side of the oil collecting groove 4 to the side where the transmission shaft is located through the bearing 6. Furthermore, the inner diameter of the annular rib 5 is equal to the inner diameter of the semi-annular groove bottom 401, so that the lubricating oil in the oil collecting groove 4 can flow into the bearing position without being blocked by the annular rib 5. Embodiment 2

[0026] like Figure 4 As shown, the difference from the above embodiment is that the outer groove wall 402 is in the shape of a circular plate, which does not affect the reception of the lubricating oil and can prevent the high-speed rotating inner ring of the bearing from throwing the lubricating oil entering the bearing position out from the through hole 3.

[0027] The above embodiments are only used to more clearly describe the present invention and cannot be regarded as limiting the protection scope of the present invention. Any modifications in equivalent forms should be regarded as falling within the protection scope of the present invention.

Claims

1. An oil collecting structure for a shaft end bearing on a housing support frame in a gearbox, characterized in that: A through hole (3) is provided on the back side of the bearing position (2) on the support frame (1), which leads from the bearing position (2) to the side wall of the support frame (1); an oil collecting groove (4) with an outwardly protruding notch facing upward for collecting splashed lubricating oil is provided on the edge of the through hole (3) on the side wall of the support frame (1); the lubricating oil in the oil collecting groove (4) can flow from the through hole (3) into the bearing position (2).

2. The oil collecting structure of the shaft end bearing at the bearing position on the housing support frame in the gearbox according to claim 1 is characterized in that: The oil collecting groove (4) comprises a groove bottom (401) and an outer groove wall (402); the groove bottom (401) is a semi-ring shape extending outward from the side wall of the support frame (1) and being coaxial with the bearing position (2); the outer groove wall (402) is located on the outer side of the groove bottom (401) and is integrally formed with the groove bottom (401).

3. The oil collecting structure of the shaft end bearing at the bearing position on the housing support frame in the gearbox according to claim 2 is characterized in that: The outer groove wall (402) is semi-annular.

4. The oil collecting structure of the shaft end bearing at the bearing position on the housing support frame in the gearbox according to claim 2 is characterized in that: The outer groove wall (402) is in the shape of a circular plate.

5. The oil collecting structure of the shaft end bearing at the bearing position on the housing support frame in the gearbox according to claim 3 is characterized in that: An annular rib (5) extending radially inward is provided on the inner wall of the through hole (3) between the oil collecting groove (4) and the bearing seat (2) to prevent the lubricating oil in the bearing seat (2) from being thrown out of the through hole (3) by the high-speed rotating bearing (6).

6. The oil collecting structure of the shaft end bearing at the bearing position on the housing support frame in the gearbox according to claim 5, characterized in that: The inner diameter of the annular rib (5) is equal to the inner diameter of the semi-annular groove bottom (401).

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