Speed reducer assembly capable of being naturally lubricated

Abstract

A speed reducer assembly capable of being naturally lubricated comprises a speed reducer shell, an oil seal is arranged at the left end of the speed reducer shell, a speed reducer shell end cover is arranged at the right end of the speed reducer shell, a speed reducer is arranged at the middle-upper end of the speed reducer shell, a differential mechanism is arranged at the lower end of the speed reducer shell, and the speed reducer comprises an input shaft and an intermediate shaft. A left oil baffle plate is arranged at the upper end of a differential left bearing seat of the differential left bearing, a right oil baffle plate is arranged at the upper end of a differential right bearing seat of the differential right bearing, lubricating oil ways are arranged on the front side end face and the rear side end face of the left oil baffle plate and the front side end face and the rear side end face of the right oil baffle plate respectively, and lubricating oil is guided into the differential bearings and the differential through oil way openings of the lubricating oil ways respectively. An upper oil baffle plate is arranged on the speed reducer shell between the upper portion of an opening of the differential mechanism assembly and the left side of the differential mechanism shaft gear, a wall face oil channel is formed in the upper end of an intermediate shaft left bearing seat of the intermediate shaft left bearing, the upper end of the wall face oil channel is fixedly connected with the oil baffle plate, and lubricating oil ways are arranged on the end faces of the front side and the rear side of the oil baffle plate.

Description

Technical Field

[0001] The invention relates to the technical field of gear box lubrication, and in particular to a reducer assembly capable of natural lubrication. Background Art

[0002] As a key component of automobile transmission, the reducer assembly can achieve the function of reducing speed and increasing torque. During the transmission process, the heat generated by components such as gears, bearings, and differentials can cause the vehicle's transmission and steering functions to fail. The industry generally increases the amount of oil injected and uses oil pumps, oil coolers and other oil cooling integrated systems to transport oil to designated parts for forced lubrication. However, increasing the amount of oil injected will increase the power loss of oil stirred by gears under high-speed rotation conditions; forced lubrication will complicate the structure and increase the number of components and costs. Summary of the invention

[0003] The purpose of the present invention is to provide a natural lubricated reducer assembly to address the corresponding deficiencies of the prior art. The reducer assembly can achieve sufficient lubrication of various components in the reducer assembly with a simpler structure.

[0004] The objective of the present invention is achieved by adopting the following scheme: a naturally lubricated reducer assembly, comprising a reducer housing, an oil seal is arranged at the left end of the reducer housing, a reducer housing end cover is arranged at the right end of the reducer housing, a reducer is arranged at the middle and upper end of the reducer housing, and a differential is arranged at the lower end of the reducer housing, the reducer comprises an input shaft and an intermediate shaft, the input shaft is arranged at the upper end of the reducer, an input shaft left bearing and an input shaft right bearing are arranged at the left and right ends of the input shaft respectively, an input shaft gear assembly is arranged in the middle section of the input shaft, the intermediate shaft is arranged at the lower end of the reducer, an intermediate shaft left bearing and an intermediate shaft right bearing are arranged at the left and right ends of the intermediate shaft respectively, an intermediate shaft gear assembly is arranged in the middle section of the intermediate shaft, the input shaft gear assembly and the left end of the intermediate shaft gear assembly are meshed with each other for power transmission, and the differential comprises a differential assembly, and a differential assembly is arranged at the left and right ends of the differential assembly respectively The left bearing of the differential and the right bearing of the differential are arranged in the middle section of the differential assembly, and the differential shaft gear is arranged in the middle section of the differential assembly, and the differential shaft gear and the right end of the intermediate shaft gear assembly are meshed with each other for power transmission. A left oil baffle plate is arranged on the upper end of the differential left bearing seat of the differential left bearing, and a right oil baffle plate is arranged on the upper end of the differential right bearing seat of the differential right bearing. Lubricating oil passages are arranged on the front and rear end surfaces of the left oil baffle plate and the right oil baffle plate, and the lubricating oil is respectively introduced into the differential bearing and the differential through the oil passage opening of the lubricating oil passage. An upper oil baffle plate is arranged on the reducer housing between the upper part of the opening of the differential assembly and the left side of the differential shaft gear, and a wall oil passage is arranged on the upper end of the intermediate shaft left bearing seat of the left intermediate shaft bearing, and the upper end of the wall oil passage is connected and fixed to the oil baffle plate, and lubricating oil passages are arranged on the front and rear end surfaces of the oil baffle plate, and the oil lubricates the left intermediate shaft bearing through the lubricating oil passage on the oil baffle plate.

[0005] The left oil baffle plate and the left bearing seat of the differential are cast as one piece, and the right oil baffle plate and the right bearing seat of the differential are cast as one piece.

[0006] The reducer housing is fixed to the left differential bearing seat and the right differential bearing seat by bolt connection.

[0007] The lubricating oil paths on the front and rear end surfaces of the left oil baffle plate and the right oil baffle plate are arranged in positive and negative symmetry.

[0008] The upper oil baffle plate is connected and fixed to the reducer housing by bolts, and the bottom surface of the lower end of the upper oil baffle plate is an inclined surface.

[0009] The wall oil passage, the left bearing seat of the intermediate shaft and the reducer housing are integrally cast.

[0010] The lubricating oil passages on the front and rear end surfaces of the oil baffle are arranged in positive and negative symmetry.

[0011] The oil baffle plate is an arc-shaped oil baffle plate.

[0012] The intermediate shaft right bearing seat of the intermediate shaft, the input shaft right bearing seat of the input shaft and the upper ends of the input shaft left bearing seat are all provided with wall oil passages and oil baffles.

[0013] The advantage of the present invention is that the oil tank and each oil baffle are cast as an integrated component, thereby reducing the complexity of the structure. The oil baffle is designed above the differential to efficiently guide the oil splashed by the gear oil stirring into the inside of the differential. The overall solution will reduce the amount of oil injected into the oil chamber and the number of components, reduce costs and oil stirring losses in the transmission system, and achieve full lubrication of each component in the reducer assembly with a simpler structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is an exploded view of the present invention; Figure 3 This is a schematic diagram of the front structure of the left oil baffle; Figure 4 This is a schematic diagram of the reverse structure of the left oil baffle; Figure 5 Schematic diagram of the upper oil baffle structure; Figure 6 It is a schematic diagram of the structure of the oil baffle plate and the left bearing seat of the intermediate shaft; Figure 7 Schematic diagram of the oil baffle structure. DETAILED DESCRIPTION

[0015] like Figures 1 to 7As shown, a naturally lubricated reducer assembly includes a reducer housing 2, an oil seal 1 is arranged at the left end of the reducer housing 2, a reducer housing end cover 6 is arranged at the right end of the reducer housing 2, a reducer is arranged at the upper end of the reducer housing 2, and a differential is arranged at the lower end of the reducer housing 2. The reducer includes an input shaft and an intermediate shaft. The input shaft is arranged at the upper end of the reducer, and an input shaft left bearing 3 and an input shaft right bearing 5 are arranged at the left and right ends of the input shaft respectively, an input shaft gear assembly 4 is arranged in the middle section of the input shaft, the intermediate shaft is arranged at the lower end of the reducer, and an intermediate shaft left bearing 7 and an intermediate shaft right bearing 9 are arranged at the left and right ends of the intermediate shaft respectively, an intermediate shaft gear assembly 8 is arranged in the middle section of the intermediate shaft, and the input shaft gear assembly 4 and the left end of the intermediate shaft gear assembly 8 are meshed with each other for power transmission, and the differential includes Differential assembly 11, the left and right ends of the differential assembly 11 are respectively provided with a differential left bearing 10 and a differential right bearing 13, the middle section of the differential assembly 11 is provided with a differential shaft gear 12, the differential shaft gear 12 and the right end of the intermediate shaft gear assembly 8 are meshed with each other for power transmission, the left oil baffle plate 18 is provided at the upper end of the differential left bearing seat 15 of the differential left bearing 10, and the right oil baffle plate 20 is provided at the upper end of the differential right bearing seat 14 of the differential right bearing 13, and the front and rear end surfaces of the left oil baffle plate 18 and the right oil baffle plate 20 are both provided with lubricating oil passages, and the lubricating oil is respectively introduced into the differential bearing and the differential through the oil passage openings of the lubricating oil passages, the left oil baffle plate 18 and the differential left bearing seat 15 are integrally cast, and the right oil baffle plate 20 and the differential right bearing seat 14 are integrally cast. The reducer housing 2 is fixed to the differential left bearing seat 15 and the differential right bearing seat 14 by bolts. The lubricating oil paths on the front and rear end surfaces of the left oil baffle plate 18 and the right oil baffle plate 20 are arranged symmetrically to ensure that full lubrication can be achieved in both forward and reverse directions. An upper oil baffle plate 19 is arranged on the reducer housing 2 between the upper part of the opening of the differential assembly 11 and the left side of the differential shaft gear 12. The upper oil baffle plate 19 is connected and fixed to the reducer housing 2 by bolts. The bottom surface of the lower end of the upper oil baffle plate 19 is an inclined surface, so as to efficiently and directional guide the splashing oil of the rotation of the differential shaft gear 12 to the inside of the differential. A wall oil passage 22 is arranged on the upper end of the intermediate shaft left bearing seat 23 of the intermediate shaft left bearing 7. The upper end of the wall oil passage 22 is connected and fixed to the oil baffle plate 21. Lubricating oil paths are arranged on the front and rear end surfaces of the oil baffle plate 21. The oil lubricates the intermediate shaft left bearing 7 through the lubricating oil paths on the oil baffle plate 21. The wall oil passage 22, the intermediate shaft left bearing seat 23 and the reducer housing 2 are integrally cast. The lubricating oil paths on the front and rear end surfaces of the oil baffle plate 21 are arranged symmetrically to ensure that full lubrication can be achieved in both forward and reverse directions. The oil baffle plate 21 is an arc-shaped oil baffle plate, and the shape of the oil baffle plate 21 is set according to the components in the reducer.The intermediate shaft right bearing seat of the intermediate shaft, the input shaft right bearing seat of the input shaft and the upper end of the input shaft left bearing seat are all provided with a wall oil passage 22 and an oil baffle 21 to ensure that all parts in the reducer can be fully lubricated.

[0016] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification made to the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. A naturally lubricated reducer assembly, comprising a reducer housing (2), an oil seal (1) being arranged at the left end of the reducer housing (2), a reducer housing end cover (6) being arranged at the right end of the reducer housing (2), a reducer being arranged at the middle and upper end of the reducer housing (2), and a differential being arranged at the lower end of the reducer housing (2), the reducer comprising an input shaft and an intermediate shaft, the input shaft being arranged at the upper end of the reducer, an input shaft left bearing (3) and an input shaft right bearing (5) being arranged at the left and right ends of the input shaft, an input shaft gear assembly (4) being arranged at the middle section of the input shaft, the intermediate shaft being arranged at the lower end of the reducer, and the intermediate shaft being arranged at the left and right ends of the intermediate shaft. A left intermediate shaft bearing (7) and a right intermediate shaft bearing (9) are respectively arranged at the two ends, an intermediate shaft gear assembly (8) is arranged in the middle section of the intermediate shaft, the input shaft gear assembly (4) and the left end of the intermediate shaft gear assembly (8) are meshed with each other for power transmission, the differential comprises a differential assembly (11), a left differential bearing (10) and a right differential bearing (13) are respectively arranged at the left and right ends of the differential assembly (11), a differential shaft gear (12) is arranged in the middle section of the differential assembly (11), the differential shaft gear (12) and the right end of the intermediate shaft gear assembly (8) are meshed with each other for power transmission, and the differential comprises a differential assembly (11), wherein: A left oil baffle plate (18) is disposed at the upper end of the left differential bearing seat (15) of the left differential bearing (10), and a right oil baffle plate (20) is disposed at the upper end of the right differential bearing seat (14) of the right differential bearing (13). Lubricating oil passages are disposed on both the front and rear end surfaces of the left oil baffle plate (18) and the right oil baffle plate (20). Lubricating oil is introduced into the differential bearing and the differential through the oil passage openings of the lubricating oil passages. The upper end of the opening of the differential assembly (11) is adjacent to the differential. An upper oil baffle plate (19) is provided on the reducer housing (2) between the left side of the reducer shaft gear (12); a wall oil passage (22) is provided at the upper end of the intermediate shaft left bearing seat (23) of the intermediate shaft left bearing (7); the upper end of the wall oil passage (22) is connected and fixed to the oil baffle plate (21); lubricating oil passages are provided on both front and rear side end surfaces of the oil baffle plate (21); and oil lubricates the intermediate shaft left bearing (7) through the lubricating oil passage on the oil baffle plate (21).

2. The naturally lubricated reducer assembly according to claim 1, characterized in that: The left oil baffle plate (18) and the left differential bearing seat (15) are integrally cast, and the right oil baffle plate (20) and the right differential bearing seat (14) are integrally cast.

3. The naturally lubricated reducer assembly according to claim 1, characterized in that: The reducer housing (2) is fixed to the left differential bearing seat (15) and the right differential bearing seat (14) by bolt connection.

4. The naturally lubricated reducer assembly according to claim 1, characterized in that: The lubricating oil passages on the front and rear end surfaces of the left oil baffle plate (18) and the right oil baffle plate (20) are arranged in positive and negative symmetry.

5. The naturally lubricated reducer assembly according to claim 1, characterized in that: The upper oil baffle plate (19) is connected and fixed to the reducer housing (2) by means of bolts, and the bottom surface of the lower end of the upper oil baffle plate (19) is an inclined surface.

6. The naturally lubricable reducer assembly according to claim 1, characterized in that: The wall oil passage (22), the intermediate shaft left bearing seat (23) and the reducer housing (2) are integrally cast.

7. The naturally lubricated reducer assembly according to claim 1, characterized in that: The lubricating oil passages on the front and rear end surfaces of the oil baffle plate (21) are arranged in positive and negative symmetry.

8. The naturally lubricated reducer assembly according to claim 1, characterized in that: The oil baffle plate (21) is an arc-shaped oil baffle plate.

9. The naturally lubricable reducer assembly according to claim 1, characterized in that: The intermediate shaft right bearing seat of the intermediate shaft, the input shaft right bearing seat of the input shaft, and the upper ends of the input shaft left bearing seat are all provided with a wall oil passage (22) and an oil baffle plate (21).

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