Combined differential shell

Abstract

The utility model discloses a combined differential shell, and relates to the technical field of differential shells, the combined differential shell comprises a connecting shell, a protective shell is arranged at the upper end of the connecting shell, an installation cavity is arranged in the protective shell, the front surface and the rear surface of the installation cavity are opened, and the protective shell is arranged in the installation cavity. A top seat plate is arranged at the upper end of the protective shell, a top seat is arranged at the upper end of the top seat plate, first clamping grooves are formed in the upper surface of the top seat, a base is arranged at the lower end of the connecting shell, second clamping grooves are formed in the lower surface of the base, and the number of the first clamping grooves and the number of the second clamping grooves are both four. According to the scheme, the problems that the input cost is high due to the fact that clamping teeth are installed on the outer portions of most connecting ends of an existing combined differential mechanism shell, when the connecting ends are connected with connecting assemblies, the connecting assemblies need to be arranged on the outer portions of the connecting ends in a sleeving mode, the mounting and dismounting paths are long, friction damage is likely to happen, and mounting and dismounting are inconvenient are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of differential cases, in particular to a combined differential case. Background Technique

[0002] The combined differential case is a differential case with a compact design and strong practicability. It is convenient for installation and disassembly through a limiting mechanism. This differential case includes a top seat, a top shell, a bottom seat, a bottom shell and a limiting mechanism;

[0003] For example, the Chinese authorized patent (differential case and differential) with the publication number of CN221503913U: includes a main body and a right shell; the main body includes a left shell and a differential ring gear, the differential ring gear surrounds the outside of the left shell, and the left shell and the differential ring gear are of an integral structure; the right shell and the left shell enclose a receiving cavity, the material of the right shell is the same as that of the left shell, and the right shell and the left shell are connected by welding. The differential includes a gear transmission structure and the differential case, and the gear transmission structure is installed in the receiving cavity. The solution provided by this application can avoid the risk of the left shell and the differential ring being welded off, and the structural strength of the left shell and the differential ring gear is higher; the materials of the left shell and the right shell are the same, which enhances the overall structural strength after welding of the left shell and the right shell, effectively reduces the welding difficulty, and the welding reliability is higher.

[0004] However, most of the connection ends of the existing combined differential cases are installed with engaging teeth outside the connection end, which results in high input costs. When connecting with the connection component, it is necessary to sleeved the connection component outside the connection end. The installation and disassembly paths are long, and it is easy to be damaged by friction, resulting in inconvenient installation and disassembly; Therefore, it does not meet the existing requirements, and for this reason, we propose a combined differential case. Content of the Utility Model

[0005] The purpose of the utility model is to provide a combined differential case to solve the problem that most of the connection ends of the existing combined differential cases are installed with engaging teeth outside the connection end, resulting in high input costs. When connecting with the connection component, it is necessary to sleeved the connection component outside the connection end. The installation and disassembly paths are long, and it is easy to be damaged by friction, resulting in inconvenient installation and disassembly as mentioned in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solution: A combined differential housing, comprising: a connecting housing, a protective housing is provided at the upper end of the connecting housing, an installation cavity is provided inside the protective housing, and the front and rear surfaces of the installation cavity are in an open form. A top seat plate is provided at the upper end of the protective housing, a top seat is provided at the upper end of the top seat plate, a first card slot is provided on the upper surface of the top seat, a base is provided at the lower end of the connecting housing, and a second card slot is provided on the lower surface of the base. Both the first card slot and the second card slot are provided with four.

[0007] Preferably, a shaft connection groove is provided on one side surface of the protective housing, and the shaft connection groove penetrates through the protective housing.

[0008] Preferably, an oil injection hole is provided on one inner wall of the shaft connection groove, and one end of the oil injection hole penetrates downward through the connecting housing.

[0009] Preferably, fixing holes are provided on the upper surfaces around the connecting housing, and a plurality of fixing holes are provided.

[0010] Preferably, a top connection cavity is provided on the top surface inside the installation cavity, a gear groove is provided on the bottom surface inside the installation cavity, the gear groove includes a limiting groove and a bottom connection cavity, and the bottom connection cavity is located at the lower end of the limiting groove. The limiting groove communicates with the bottom connection cavity, and gaskets are provided inside both the top connection cavity and the bottom connection cavity.

[0011] Preferably, shaft through grooves are provided inside both the top seat and the base, and the shaft through grooves penetrate through the top seat and the base vertically.

[0012] Preferably, the connecting housing and the protective housing are fixed by welding, and the protective housing is fixed to both the top seat plate and the base by welding. The top seat plate and the top seat are of an integral structure.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] The utility model is characterized in that a first clamping groove is arranged on the upper surface of the top seat, a second clamping groove is arranged on the lower surface of the base, the wheel axles are respectively connected by the shaft through grooves of the top seat and the base, and the transmission rod is connected by the shaft connection groove. The planetary gears are connected through the installation cavity, the gear groove, the limiting groove, the top connection cavity and the bottom connection cavity, so as to carry out differential transmission operation. When one end of the top seat and the base is externally connected to the connection assembly, the connection assembly is externally connected through the first clamping groove and the second clamping groove respectively, and is directly connected through the top surface, without sleeving the connection assembly outside the top seat and the base, reducing the installation and disassembly path, thus being not easy to be damaged by friction, improving the convenience of installation and disassembly and the service life, and solving the problem that most of the connection ends of the existing combined differential housing are provided with clamping teeth outside the connection end, with high input cost. When connecting with the connection assembly, it is necessary to sleeve the connection assembly outside the connection end, with a long installation and disassembly path, and it is easy to be damaged by friction, resulting in inconvenient installation and disassembly.

[0015] By arranging an oil injection hole on the inner wall of one side of the shaft connection groove, and one end of the oil injection hole penetrates downward through the connection housing, oil injection operation is carried out into the shaft connection groove through the oil injection hole, so that oil is conveyed into the installation cavity through the shaft connection groove, playing a lubricating effect on the planetary gears, avoiding hard friction of the planetary gears, and improving the service life. Brief Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 is a schematic diagram of the overall front view cross-section structure of the utility model;

[0018] Figure 3 is a schematic diagram of the overall bottom view structure of the utility model;

[0019] Figure 4 is a schematic diagram of the overall left side view cross-section of the utility model;

[0020] In the figure: 1, connection housing; 2, protective housing; 3, top seat plate; 4, top seat; 5, first clamping groove; 6, fixing hole; 7, gear groove; 8, base; 9, gasket; 10, limiting groove; 11, shaft connection groove; 12, oil injection hole; 13, second clamping groove; 14, installation cavity; 15, top connection cavity; 16, bottom connection cavity; 17, shaft through groove. Detailed Description of the Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0022] Please refer to Figures 1-4, an embodiment provided by the present utility model: a combined differential housing, comprising: a connection housing 1, a protective housing 2 is provided at the upper end of the connection housing 1, an installation cavity 14 is provided inside the protective housing 2, and the front and rear surfaces of the installation cavity 14 are in an open form. A top seat plate 3 is provided at the upper end of the protective housing 2, a top seat 4 is provided at the upper end of the top seat plate 3, a first card slot 5 is provided on the upper surface of the top seat 4, a base 8 is provided at the lower end of the connection housing 1, a second card slot 13 is provided on the lower surface of the base 8, and both the first card slot 5 and the second card slot 13 are provided with four. A shaft connection groove 11 is provided on one side surface of the protective housing 2, and the shaft connection groove 11 penetrates through the protective housing 2. A top connection cavity 15 is provided on the top surface inside the installation cavity 14, a gear groove 7 is provided on the bottom surface inside the installation cavity 14, the gear groove 7 includes a limit groove 10 and a bottom connection cavity 16, and the bottom connection cavity 16 is located at the lower end of the limit groove 10. The limit groove 10 communicates with the bottom connection cavity 16. Gaskets 9 are provided inside both the top connection cavity 15 and the bottom connection cavity 16. Shaft through grooves 17 are provided inside both the top seat 4 and the base 8, and the shaft through grooves 17 penetrate through the top seat 4 and the base 8 up and down. The connection housing 1 and the protective housing 2 are welded and fixed, and the protective housing 2 is welded and fixed to both the top seat plate 3 and the base 8. The top seat plate 3 and the top seat 4 are of an integral structure, improving the overall hardness and stability. Compared with bolt fixation, it is not easy to loosen, improving safety and stability.

[0023] The wheel axles are respectively connected by using the shaft through grooves 17 of the top seat 4 and the base 8, and the transmission rod is connected by using the shaft connection groove 11. The planetary gears are connected through the installation cavity 14, the gear groove 7, the limit groove 10, the top connection cavity 15 and the bottom connection cavity 16, so as to perform differential transmission operation. When the connection components are externally connected to one end of the top seat 4 and the base 8, the connection components are externally connected through the first card slot 5 and the second card slot 13 respectively, and are directly connected through the top surface, without sleeving the connection components outside the top seat 4 and the base 8, reducing the installation and disassembly paths, thus not being easily damaged by friction, and improving the installation and disassembly convenience and service life.

[0024] Please refer to Figure 2 , an oil injection hole 12 is provided on one inner wall of the shaft connection groove 11, and one end of the oil injection hole 12 penetrates downward through the connection housing 1. Oil injection operation is carried out through the oil injection hole 12 to avoid hard friction of the planetary gears and improve the service life.

[0025] Please refer to Figure 1 , fixing holes 6 are provided on the upper surfaces of the four circumferences of the connection housing 1, and a plurality of fixing holes 6 are provided. The connection housing 1 is fixed by externally connecting bolts through the fixing holes 6.

[0026] Working principle: When in use, the axle through grooves 17 of the top seat 4 and the base 8 are respectively used to connect the wheel axles, and the transmission rod is connected by means of the shaft connection groove 11. The planetary gears are connected through the installation cavity 14, the gear groove 7, the limit groove 10, the top connection cavity 15 and the bottom connection cavity 16, so as to perform the differential drive operation. And the oil injection operation is carried out through the oil injection hole 12 to avoid hard friction of the planetary gears, improve the service life. When the outer ends of the top seat 4 and the base 8 are externally connected to the connection components, the connection components are externally connected through the first card slot 5 and the second card slot 13 respectively, and are directly connected through the top surface, without sleeving the connection components outside the top seat 4 and the base 8, reducing the installation and disassembly paths, thus not being easily damaged by friction, and improving the convenience of installation and disassembly and the service life.

Claims

1. A combined differential housing, comprising a connecting housing (1), characterized in that: A protective housing (2) is provided at the upper end of the connecting housing (1). An installation cavity (14) is provided inside the protective housing (2), and the front and rear surfaces of the installation cavity (14) are in an open form. A top seat plate (3) is provided at the upper end of the protective housing (2), a top seat (4) is provided at the upper end of the top seat plate (3), a first card slot (5) is provided on the upper surface of the top seat (4), a base (8) is provided at the lower end of the connecting housing (1), a second card slot (13) is provided on the lower surface of the base (8), and both the first card slot (5) and the second card slot (13) are provided with four.

2. The combined differential housing according to claim 1, characterized in that: A shaft connection groove (11) is provided on one side surface of the protective housing (2), and the shaft connection groove (11) penetrates through the protective housing (2).

3. A combined differential housing according to claim 2, wherein: An oil injection hole (12) is provided on one inner wall of the shaft connection groove (11), and one end of the oil injection hole (12) penetrates downward through the connecting housing (1).

4. A combined differential housing according to claim 1, characterized in that: Fixing holes (6) are provided on the upper surfaces around the connecting housing (1), and several fixing holes (6) are provided.

5. A combined differential housing according to claim 1, characterized in that: A top connection cavity (15) is provided on the top surface inside the installation cavity (14), a gear groove (7) is provided on the bottom surface inside the installation cavity (14), the gear groove (7) includes a limit groove (10) and a bottom connection cavity (16), and the bottom connection cavity (16) is located at the lower end of the limit groove (10). The limit groove (10) communicates with the bottom connection cavity (16), and gaskets (9) are provided inside both the top connection cavity (15) and the bottom connection cavity (16).

6. The combined differential housing according to claim 1, characterized in that: Shaft penetration grooves (17) are provided inside both the top seat (4) and the base (8), and the shaft penetration grooves (17) penetrate through the top seat (4) and the base (8) vertically.

7. The combined differential housing according to claim 1, characterized in that: The connecting housing (1) is fixedly welded to the protective housing (2), and the protective housing (2) is fixedly welded to both the top seat plate (3) and the base (8). The top seat plate (3) and the top seat (4) are of an integral structure.

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