Differential mechanism shell structure

Abstract

The utility model discloses a differential shell structure which enables a shell to be reliably hoisted through a connecting hoisting rod, does not increase the peripheral space of the shell, and ensures reliable assembly of a differential after hoisting is completed. The device comprises: a left housing; a right housing; the opposite end faces of the left shell and the right shell are assembled in an aligned mode and fastened to form an integral shell, the left shell and the right shell are assembled to form an installation cavity, and a half axle gear and a planetary gear mechanism which correspond to each other are arranged in the installation cavity. Axial via holes are formed in the positions, corresponding to respective half shafts, of the left shell and the right shell, and a threaded hole is formed in at least one axial via hole of the left shell and the right shell; when hoisting is needed, the hoisting rod with the matched external threads is inserted into the axial through hole with the threaded hole, the external threads of the hoisting rod are in threaded connection with the threaded hole, and then the hoisting rod is hoisted through hoisting equipment, so that hoisting alignment assembly is completed.

Description

Technical Field

[0001] This utility model relates to the technical field of differential structure, specifically a differential housing structure. Background Technology

[0002] A split differential consists of a left housing and a right housing. During assembly, the two housings need to be joined together. Due to the relatively large weight of the housings, after one set of housings is positioned, the other set needs to be hoisted for alignment and assembly. In practice, since the housings need to rotate during operation, directly installing hooks on the housings would require increasing the space of the entire external cavity, leading to a significant increase in the chassis space. Therefore, it is not feasible to directly install hooks on the housings. Consequently, there is an urgent need to develop a reliable structure suitable for hoisting that does not require additional space around the housings. Utility Model Content

[0003] To address the aforementioned issues, this utility model provides a differential housing structure that allows the housing to be reliably hoisted using connecting booms without increasing the external space of the housing, ensuring reliable assembly of the differential after hoisting.

[0004] A differential housing structure, characterized in that it comprises:

[0005] Left shell;

[0006] Right shell;

[0007] The opposing end faces of the left and right shells are aligned, assembled, and fastened to form an integral shell. The assembly of the left and right shells forms an installation cavity, and a corresponding half-shaft gear and planetary gear mechanism are provided in the installation cavity.

[0008] The left and right housings are each provided with axial through holes at the positions corresponding to their respective half-shafts, and at least one axial through hole in the left and right housings is provided with a threaded hole.

[0009] When hoisting is required, the lifting rod with matching external threads is inserted into the axial through hole with threaded holes, and the external thread of the lifting rod is threaded to the threaded hole. Then, the lifting rod is lifted by the hoisting equipment to complete the hoisting, alignment and assembly.

[0010] When the half-shaft passes through the threaded hole, there is a gap between the outer wall of the half-shaft and the inner ring of the threaded hole.

[0011] Its further features are:

[0012] When the differential is working, the threaded hole forms a spiral groove with a rotation direction. The spiral groove allows external lubricating oil to splash into the gap and enter the mechanism in the mounting cavity for reliable lubrication when the wheel moves forward.

[0013] When the axial through-hole length of one housing is small, while the axial through-hole length of the other housing is relatively long, the threaded hole is only set on the housing with the longer axial through-hole length to ensure reliable and stable installation of the hanger.

[0014] When the axial through-hole lengths of both sets of housings are relatively long, the threaded hole can be set on either or both sets of housings.

[0015] Preferably, when a threaded hole is arranged in the axial through hole of the right housing, the threaded hole is right-handed;

[0016] When a threaded hole is arranged in the axial through hole of the left housing, the direction of the threaded hole is left-handed.

[0017] With the structure of this utility model, the lifting rod with matching external threads is inserted into the axial through hole with threaded holes, and the external thread of the lifting rod is connected to the threaded hole. Then, the lifting rod is lifted by the lifting equipment to complete the lifting and alignment assembly. After the lifting and alignment is completed, the threaded connection is removed and the lifting rod is removed. Then, the corresponding half shaft is inserted through the axial through hole. This allows the housing to be reliably lifted by connecting the lifting rod without increasing the external space of the housing. After the lifting is completed, the reliable assembly of the differential is guaranteed. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a specific embodiment of the present utility model;

[0019] The names corresponding to the serial numbers in the diagram are as follows:

[0020] Left housing 10, right housing 20, mounting cavity 101, half-shaft gear 30, planetary gear 40, connecting shaft 50, half-shaft 60;

[0021] Axial through hole 1, threaded hole 2, spiral groove 201, clearance 3. Detailed Implementation

[0022] A differential housing structure, see Figure 1 It includes a left housing 10 and a right housing 20; the opposing end faces of the left housing 10 and the right housing 20 are aligned and fastened to form an integral housing. After the left housing 10 and the right housing 20 are assembled, they form an installation cavity 101. The installation cavity 10 is provided with a corresponding half-shaft gear 30 and a planetary gear mechanism. The planetary gear mechanism includes two planetary gears 40 and a connecting shaft 50. The two planetary gears 40 are connected by the connecting shaft 50.

[0023] The left housing 10 and the right housing 20 are each provided with an axial through hole 1 at the position corresponding to their respective half shafts 60, and at least one axial through hole 1 in the left housing 10 and the right housing 20 is provided with a threaded hole 2.

[0024] When hoisting is required, a hoisting rod with matching external threads (not shown in the figure, but can be made according to the actual situation) is inserted into the axial through hole 1 with threaded hole 2, and the external thread of the hoisting rod is connected to the threaded hole 2. Then, the hoisting rod is lifted by hoisting equipment to complete the hoisting, alignment and assembly. After that, the threaded connection is released and the hoisting rod is removed.

[0025] When the half-shaft 60 passes through the threaded hole 2, there is a gap 3 between the outer wall of the half-shaft 60 and the inner ring of the threaded hole 2.

[0026] In practice, when the differential is working, the threaded hole 2 forms a spiral groove 201 with a rotation direction. When the wheel moves forward, the external lubricating oil splashes into the gap 3 and enters the mounting cavity 101 along the spiral groove 201, so as to reliably lubricate the various mechanisms in the mounting cavity 101.

[0027] In practice, when the axial through hole 1 of one housing is short and the axial through hole 1 of the other housing is relatively long, the threaded hole 2 is only set on the housing with the longer axial through hole 1 to ensure reliable and stable installation of the hanger.

[0028] In practice, when the axial through-hole 1 of both sets of housings is relatively long, the threaded hole 2 is set on any one of the housings or both sets of housings.

[0029] For specific embodiments, see Figure 1 The right housing 20 has a longer axial through hole 1, while the axial through hole 1 of the left housing 10 is relatively shorter. Only the threaded hole 2 is arranged in the axial through hole of the right housing 20, and the threaded hole 2 is right-handed. This ensures that when the wheel moves forward, the right housing 20 and the half shaft rotate relative to each other, and the lubricating oil splashed into the gap 3 enters the mounting cavity 101 along the spiral groove 201 (the arrow in the figure indicates the direction of the lubricating oil path).

[0030] The axial position of the threaded hole 2 corresponds to the middle section of the axial through hole 1. The starting and ending ends of the axial position of the threaded hole 2 are spaced apart from the two ends of the axial through hole 1.

[0031] Its working principle is as follows: The lifting rod with matching external threads is inserted into the axial through hole with threaded holes, and the external thread of the lifting rod is connected to the threaded hole. Then, the lifting rod is lifted by the lifting equipment to complete the lifting and alignment assembly. After the lifting and alignment is completed, the threaded connection is removed and the lifting rod is removed. Then, the corresponding half shaft is inserted through the axial through hole. This allows the housing to be reliably lifted by connecting the lifting rod without increasing the external space of the housing. After the lifting is completed, the reliable assembly of the differential is guaranteed.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A differential housing structure, characterized in that, It includes: Left shell; Right shell; The opposing end faces of the left and right shells are aligned, assembled, and fastened to form an integral shell. The assembly of the left and right shells forms an installation cavity, and a corresponding half-shaft gear and planetary gear mechanism are provided in the installation cavity. The left and right housings are each provided with axial through holes at the positions corresponding to their respective half-shafts, and at least one axial through hole in the left and right housings is provided with a threaded hole. When hoisting is required, the lifting rod with matching external threads is inserted into the axial through hole with threaded holes, and the external thread of the lifting rod is threaded to the threaded hole. Then, the lifting rod is lifted by the hoisting equipment to complete the hoisting, alignment and assembly. When the half-shaft passes through the threaded hole, there is a gap between the outer wall of the half-shaft and the inner ring of the threaded hole.

2. The differential housing structure according to claim 1, characterized in that: When the differential is in operation, the threaded hole forms a spiral groove with a rotation direction. The spiral groove allows external lubricating oil to splash into the gap and enter the mechanism in the mounting cavity for lubrication when the wheel moves forward.

3. A differential housing structure according to claim 1, characterized in that: When the axial through-hole length of one housing is small, while the axial through-hole length of the other housing is relatively long, the threaded hole is only set on the housing with the longer axial through-hole length.

4. A differential housing structure according to claim 1, characterized in that: When the axial through-hole lengths of both sets of housings are relatively long, the threaded hole is set on either or both sets of housings.

5. A differential housing structure according to claim 1, characterized in that: When a threaded hole is arranged in the axial through hole of the right housing, the direction of the threaded hole is right-handed.

6. A differential housing structure according to claim 1, characterized in that: When a threaded hole is arranged in the axial through hole of the left housing, the direction of the threaded hole is left-handed.

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