Differential mechanism shell structure

Abstract

The invention 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] The present invention relates to the technical field of differential structures, and in particular to a differential housing structure. Background Art

[0002] The split differential includes a left housing and a right housing. The two housings need to be assembled together. Since the weight of the housings is relatively large, after one set of housings is positioned, the other set of housings needs to be hoisted to complete the alignment assembly. In the actual process, since the housings need to keep rotating during the operation of the differential, if a hook is directly set on the housing, the entire external cavity will need to expand the space, which will cause a surge in the space of the chassis. Therefore, it is impossible to set a hook directly on the housing. For this reason, it is urgently necessary to develop a reliable structure suitable for hoisting that does not increase the outer space of the housing. Summary of the invention

[0003] In view of the above problems, the present invention provides a differential housing structure, which enables the housing to be reliably hoisted by connecting the hoisting rods without increasing the peripheral space of the housing, and ensures reliable assembly of the differential after the hoisting is completed.

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

[0005] left housing;

[0006] right housing;

[0007] The facing end surfaces of the left housing and the right housing are assembled and fastened to form an integral housing. After the left housing and the right housing are assembled, a mounting cavity is formed. The mounting cavity is provided with corresponding half-shaft gears and planetary gear mechanisms.

[0008] The left housing and the right housing are both provided with axial through holes at positions corresponding to their respective half-axes, and at least one axial through hole of the left housing and the right housing is provided with a threaded hole;

[0009] When hoisting is required, a hoisting rod with matching external threads is inserted into the axial through hole with threaded holes, and the external threads of the hoisting rod are threadedly connected to the threaded holes. The hoisting rod is then hoisted by hoisting equipment to complete the hoisting alignment assembly.

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

[0011] It is further characterized by:

[0012] When the differential is working, the threaded hole forms a spiral groove with a rotation direction, and the spiral groove allows the external lubricating oil to splash into the gap when the wheel moves forward, and the lubricating oil enters the mechanism in the installation cavity along the spiral groove to perform reliable lubrication operation;

[0013] When the axial through hole length of one shell is short and the axial through hole length of the other shell is relatively long, the threaded hole is only set on the shell with the longer axial through hole length to ensure reliable and stable installation of the suspension rod;

[0014] When the axial through-hole lengths of the two sets of shells are relatively long, threaded holes are provided on any one shell or both sets of shells;

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

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

[0017] After adopting the structure of the present invention, a hanger with matching external threads is inserted into an axial through hole with a threaded hole, and the external threads of the hanger are threadedly connected to the threaded hole. The hanger is then lifted by a lifting device to complete the lifting and alignment assembly. After the lifting and alignment is completed, the threaded connection is removed and the hanger is removed. The corresponding half-shaft is then passed through the axial through hole. This allows the housing to be reliably lifted by connecting the hanger without increasing the peripheral space of the housing. After the lifting is completed, the reliable assembly of the differential is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention;

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

[0020] The left housing 10, the right housing 20, the mounting cavity 101, the side shaft gear 30, the planetary gear 40, the connecting shaft 50, and the side shaft 60;

[0021] Axial through hole 1, threaded hole 2, spiral groove 201, gap 3. DETAILED DESCRIPTION

[0022] A differential housing structure, see Figure 1 , which includes a left housing 10 and a right housing 20; the facing end surfaces of the left housing 10 and the right housing 20 are assembled and fastened to form an integral housing, and the left housing 10 and the right housing 20 are assembled to form a mounting cavity 101, and the mounting cavity 10 is provided with a corresponding half-shaft gear 30 and a planetary gear mechanism, and the planetary gear mechanism includes two planetary gears 40 and a connecting shaft 50, and the two planetary gears 40 are connected by the connecting shaft 50;

[0023] The left housing 10 and the right housing 20 are both provided with axial through holes 1 at positions corresponding to their respective half shafts 60, and a threaded hole 2 is provided in at least one of the axial through holes 1 of the left housing 10 and the right housing 20;

[0024] When hoisting is required, a hanging rod with matching external threads (not shown in the figure, it can be made according to the actual situation) is inserted into the axial through hole 1 with the threaded hole 2, and the external thread of the hanging rod is threadedly connected to the threaded hole 2, and then the hanging rod is hoisted by the hoisting equipment to complete the hoisting alignment assembly, and then the threaded connection is released and the hanging rod is taken away;

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

[0026] In specific implementation, when the differential is working, the threaded hole 2 forms a spiral groove 201 with a rotation direction. The spiral groove 201 allows the external lubricating oil to splash into the gap 3 when the wheel moves forward, and the lubricating oil enters the installation cavity 101 along the spiral groove 201, thereby reliably lubricating various mechanisms in the installation cavity 101.

[0027] In specific implementation, when the axial through hole 1 of one shell is short and the axial through hole 1 of the other shell is relatively long, the threaded hole 2 is only provided on the shell with the longer axial through hole 1 to ensure reliable and stable installation of the suspension rod.

[0028] In a specific implementation, when the lengths of the axial through holes 1 of the two groups of shells are relatively long, the threaded holes 2 are arranged on any one shell or both groups of shells.

[0029] Specific embodiments, see Figure 1 The right housing 20 has a relatively long axial through hole 1, and the axial through hole 1 of the left housing 10 is relatively short. 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; when the wheel moves forward, the right housing 20 and the half shaft 60 rotate relative to each other, and the external lubricating oil splashes into the lubricating oil in the gap 3 and enters the installation 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 , and the starting end and the ending end of the axial position of the threaded hole 2 are spaced apart from the axial ends of the axial through hole 1 .

[0031] Its working principle is as follows: insert a hanger with matching external threads into an axial through-hole with a threaded hole, and the external threads of the hanger are threadedly connected to the threaded hole. Then, the hanger is lifted by a lifting device to complete the lifting and alignment assembly. After the lifting and alignment is completed, remove the threaded connection and then remove the hanger. Then, pass the corresponding half-shaft through the axial through-hole. This allows the housing to be reliably lifted by connecting the hanger without increasing the peripheral 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 the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A differential housing structure, characterized in that: It includes: left housing; right housing; The facing end surfaces of the left housing and the right housing are assembled and fastened to form an integral housing. After the left housing and the right housing are assembled, a mounting cavity is formed. The mounting cavity is provided with corresponding half-shaft gears and planetary gear mechanisms. The left housing and the right housing are both provided with axial through holes at positions corresponding to their respective half-axes, and at least one axial through hole of the left housing and the right housing is provided with a threaded hole; When hoisting is required, a hoisting rod with matching external threads is inserted into the axial through hole with threaded holes, and the external threads of the hoisting rod are threadedly connected to the threaded holes. The hoisting rod is then hoisted by hoisting equipment to complete the hoisting alignment assembly. When the half shaft passes through the threaded hole, a gap is left between the outer wall of the half shaft and the inner circle of the threaded hole.

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

3. A differential case structure according to claim 1, characterized in that: When the axial through hole length of one shell is short and the axial through hole length of the other shell is relatively long, the threaded hole is only provided on the shell with the longer axial through hole length.

4. A differential case structure according to claim 1, characterized in that: When the axial through-hole lengths of the two groups of shells are relatively long, threaded holes are arranged on any one shell or both groups of shells.

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

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

Images