Main speed reducer lubricating structure

Abstract

The utility model provides a main speed reducer lubricating structure which comprises a speed reducer shell, mounting holes for mounting a gear and a bearing are formed in the lower end of the speed reducer shell, an oil blocking boss is arranged at the upper end of the speed reducer shell, an oil collecting groove is integrally formed in the speed reducer shell, and the top of the oil collecting groove is higher than the top of the oil blocking boss. An oil conveying hole facing the mounting hole is formed in the middle of the oil collecting groove, a through oil inlet hole is formed in the side wall, right facing the oil conveying hole, of the mounting hole, and an oil inlet channel is arranged between one end of the oil collecting groove and the inner side wall of the speed reducer shell. When the main speed reducer operates at a high speed, part of lubricating oil flows into the oil collecting groove to be temporarily stored, and when the main speed reducer operates at a low speed, part of the lubricating oil temporarily stored in the oil collecting groove enters the mounting hole from the oil conveying hole through the oil inlet hole to lubricate a gear and a bearing, so that the structure meets the lubricating requirements when the main speed reducer operates at a high speed and a low speed; the structure is simple, implementation is easy, and the lubrication condition of the bearing in the main reducer assembly is improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, specifically to a lubrication structure for a main reducer. Background Technology

[0002] In recent years, with the support and guidance of national policies, electric commercial vehicles have entered a stage of rapid development. As a core component of the rear drive axle of electric commercial vehicles, the main reducer assembly's internal lubrication directly affects the performance and service life of the rear drive axle. Figure 1 As shown, the main reducer assembly currently includes a reducer housing 1. The lower end of the reducer housing 1 is provided with mounting holes 2 for mounting gears and bearings, and the upper end is provided with an inwardly protruding oil baffle 3. When the main reducer is running at high speed, the lubricating oil flows in at high speed from the direction indicated by arrow a and hits the oil baffle 3, and finally bounces back to the mounting hole 2 to lubricate the gears and bearings. This structure has a good lubrication effect when the main reducer is running at high speed, but when the main reducer is running at low speed, the flow rate and impact force of the lubricating oil are insufficient, so it cannot lubricate the gears and bearings in the mounting hole 2.

[0003] Therefore, those skilled in the art are dedicated to developing a main reducer lubrication structure that is simple in structure and can ensure sufficient oil volume even when the main reducer is running at low speed. Summary of the Invention

[0004] The purpose of this invention is to develop a lubrication structure for a main reducer that is simple in structure and can ensure sufficient oil supply even when the main reducer is running at low speed.

[0005] The objective of this utility model is achieved through the following solution:

[0006] A lubrication structure for a main reducer includes a reducer housing. The lower end of the reducer housing has mounting holes for mounting gears and bearings, and the upper end has an oil baffle. An oil collection groove is integrally formed on the reducer housing, with the top of the oil collection groove being higher than the top of the oil baffle. An oil delivery hole facing the mounting holes is provided in the middle of the oil collection groove. A through oil inlet hole is provided on the side wall of the mounting holes opposite to the oil delivery holes. An oil inlet passage is provided between one end of the oil collection groove and the inner side wall of the reducer housing.

[0007] Furthermore, the oil collection trough is composed of two elongated oil baffles and a reducer housing. The two oil baffles are arranged in an inverted V-shape. The oil delivery hole is located between the lower ends of the two oil baffles, and the oil inlet is located between the upper oil baffle and the inner wall of the reducer housing.

[0008] Furthermore, a support column is integrally provided in the center of the back side of the oil baffle.

[0009] Furthermore, the width of the oil delivery hole is smaller than the width of the oil inlet hole.

[0010] Furthermore, the width of the oil delivery hole is 4 / 5 to 3 / 5 of the width of the oil inlet hole.

[0011] Furthermore, the top of the oil baffle is at least 2.4 cm higher than the top of the oil baffle boss.

[0012] Furthermore, the width of the oil inlet channel is greater than the width of the oil delivery hole.

[0013] The advantages of this invention are as follows: When the main reducer operates at high speed, a portion of the lubricating oil flows into the oil collection groove for temporary storage. When the main reducer operates at low speed, the lubricating oil temporarily stored in the oil collection groove enters the mounting hole through the oil supply hole and inlet hole to lubricate the gears and bearings. This structure thus addresses the lubrication needs of the main reducer at both high and low speeds. It is simple in structure, easy to implement, and improves the lubrication of the bearings inside the main reducer assembly. This simple and easy-to-implement solution effectively improves the lubrication of the bearings inside the main reducer assembly, significantly reducing after-sales gear and bearing problems caused by poor lubrication. The oil collection groove structure on the reducer housing ensures that even at low rear axle speeds, the gear oil in the collection groove still provides sufficient lubrication for the gears and bearings, achieving good results. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main reducer assembly in the background art;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model;

[0016] Figure 3 This is a top view of the structure of this utility model;

[0017] Figure 4 This is a side view of the structure of this utility model. Detailed Implementation

[0018] To enable those skilled in the art to understand the features and effects of this application, the terms and expressions used in the specification and claims are explained and defined in general below. Unless otherwise specified, all technical and scientific terms used herein have the ordinary meaning understood by those skilled in the art in this application, and in case of conflict, the definitions in this specification shall prevail.

[0019] The theories or mechanisms described and disclosed herein, whether right or wrong, shall not in any way limit the scope of this application, that is, the content of this application may be implemented without being limited by any particular theory or mechanism.

[0020] In this document, "this application" means "this utility model" or "this disclosure".

[0021] The terms “a,” “an,” “a,” or similar expressions are used herein to describe the components and technical features described in this application. Such descriptions are merely for convenience and to provide a general meaning for the scope of this application. Therefore, such descriptions should be understood to include one or at least one, and the singular includes the plural, unless clearly otherwise indicated.

[0022] In this article, "or a combination thereof" means "or any combination thereof", and "any one", "any kind", "any one" means "any one", "any kind", "any one".

[0023] It should be understood that the features disclosed in the various embodiments herein can be arbitrarily combined to form the technical solution of this application, as long as there is no contradiction in the combination of these features.

[0024] The present application will be described below with reference to specific embodiments and examples. It should be understood that these specific embodiments and examples are merely illustrative and are not intended to limit the scope or use of the present application.

[0025] Example 1

[0026] like Figures 2 to 4 As shown, a lubrication structure for a main reducer includes a reducer housing 1. The lower end of the reducer housing 1 has mounting holes 2 for installing gears and bearings, and the upper end has an oil-blocking boss 3. An oil collection groove 8 is integrally formed on the reducer housing 1, with the top of the oil collection groove 8 higher than the top of the oil-blocking boss 3. An oil delivery hole 5 facing the mounting hole 2 is provided in the middle of the oil collection groove 8. A through oil inlet hole 6 is provided on the side wall of the mounting hole 2 opposite to the oil delivery hole 5. An oil inlet channel 7 is provided between one end of the oil collection groove 8 and the inner side wall of the reducer housing 1. When the main reducer operates at high speed, lubricating oil flows at high speed from the oil inlet channel 7 in the direction indicated by arrow b. A portion of the lubricating oil is temporarily stored in the oil collection tank 8, while another portion enters the mounting hole 2 from the oil inlet hole 6 along the direction indicated by arrow c from the oil delivery hole 5, lubricating the gears and bearings. When the main reducer is running at low speed, the lubricating oil temporarily stored in the oil collection tank 8 enters the mounting hole 2 from the oil inlet hole 6 along the direction indicated by arrow c from the oil delivery hole 5, lubricating the gears and bearings. In this way, the structure takes into account the lubrication needs of the main reducer at both high and low speeds. The structure is simple and easy to implement, which can effectively improve the lubrication of the bearings inside the main reducer assembly, greatly reduce gear and bearing problems caused by poor lubrication after sales, and avoid gear and bearing damage caused by poor lubrication.

[0027] The oil collection trough 8 can be implemented in various ways, but in this embodiment, the oil collection trough 8 is composed of two elongated oil baffles 4 and a reducer housing 1. The two oil baffles 4 are arranged in an inverted V-shape, and the oil inlet 5 is located between the lower ends of the two oil baffles 4. The oil inlet channel 7 is located between the upper oil baffle 4 and the inner wall of the reducer housing 1. The oil collection trough 8 can also be formed by an integrated arc-shaped oil baffle and the reducer housing 1, with the oil inlet 5 located on the oil baffle.

[0028] The oil baffle 4 has an integrated support column 9 in the middle of its back side, which provides a certain degree of support rigidity.

[0029] To ensure sufficient oil intake in mounting hole 2, the width of oil delivery hole 5 is smaller than the width of oil inlet hole 6, preventing some lubricating oil from leaking out of oil inlet hole 6 and ensuring that all lubricating oil output from oil delivery hole 5 flows through oil inlet hole 6. Preferably, the width of oil delivery hole 5 is 4 / 5 to 3 / 5 of the width of oil inlet hole 6.

[0030] The top of the oil baffle 4 is at least 2.4 cm higher than the top of the oil baffle boss 3, thus providing the largest possible capacity for the oil collection groove 8 in the main reducer. At the same time, the width of the oil inlet 7 is greater than the width of the oil outlet 5, ensuring that as much lubricating oil as possible can flow into the oil collection groove 8 when the main reducer is running at high speed.

[0031] 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 made to the present utility model by those skilled in the art without departing from the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A main reducer lubrication structure, comprising a reducer housing (1), the lower end of the reducer housing (1) is provided with a mounting hole (2) for mounting gears and bearings, and the upper end is provided with an oil blocking boss (3), characterized in that: The reducer housing (1) is integrally provided with an oil collecting groove (8), the top of the oil collecting groove (8) is higher than the top of the oil blocking boss (3), the middle of the oil collecting groove (8) is provided with an oil conveying hole (5) facing the mounting hole (2), the side wall of the mounting hole (2) opposite to the oil conveying hole (5) is provided with a through oil inlet hole (6), and one end of the oil collecting groove (8) and the inner side wall of the reducer housing (1) are provided with an oil inlet channel (7). The oil collecting groove (8) is composed of two long strip-shaped oil blocking plates (4) and the reducer housing (1).

2. The main reduction lubrication arrangement of claim 1, wherein: The two oil blocking plates (4) are arranged in an inverted V shape, the oil conveying hole (5) is arranged between the lower ends of the two oil blocking plates (4), and the oil inlet channel (7) is arranged between the upper oil blocking plate (4) and the inner wall of the reducer housing (1).

3. The main reduction lubrication arrangement of claim 2, wherein: The back surface of the oil blocking plate (4) is integrally provided with a supporting column (9) in the middle.

4. The main reduction lubrication arrangement of claim 1, wherein: The width of the oil conveying hole (5) is smaller than the width of the oil inlet hole (6).

5. The main reduction lubrication arrangement of claim 4, wherein: The width of the oil conveying hole (5) is 4 / 5-3 / 5 of the width of the oil inlet hole (6).

6. The main reduction lubrication arrangement of claim 1, wherein: The top of the oil blocking plate (4) is at least 2.4 cm higher than the top of the oil blocking boss (3).

7. The main reducer lubrication structure according to claim 1, characterized by: The width of the oil inlet channel (7) is greater than the width of the oil conveying hole (5).

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