Drive axle housing with oil leakage prevention structure on end face

Abstract

The utility model discloses a drive axle housing with an end face provided with an oil leakage prevention structure, which relates to the technical field of automobiles and comprises a drive axle body, the drive axle body is of a hollow structure, a differential mechanism is arranged in the drive axle body, a horizontally and longitudinally penetrating channel II is arranged on one side wall of the drive axle body along the length direction, and the oil leakage prevention structure is arranged on the other side wall of the drive axle body. A first flange plate is arranged at an opening in one side of the second channel in the drive axle body, and a sealing mechanism is arranged between the first flange plate and the drive axle body. According to the drive axle, the sealing mechanism is additionally arranged between the drive axle body and the first flange plate, leakage of internal lubricating oil can be effectively reduced, meanwhile, interference of external dust and impurities can be reversely isolated, bidirectional sealing is achieved, and the service life of the drive axle is prolonged. In addition, the first channel arranged at the connecting position of the drive axle body and the first flange plate can collect leaked lubricating oil, maintenance personnel can conveniently and visually know whether the oil leakage phenomenon exists or not, the sealing performance of the drive axle is guaranteed, and meanwhile maintenance is more convenient and faster.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a drive axle housing with an end surface provided with an oil leakage prevention structure. Background Art

[0002] The drive axle is an important component of the automobile transmission system. It is located at the end of the transmission system. Its main function is to change the speed and torque from the transmission and transmit them to the drive wheels. The drive axle is generally composed of a final reducer, a differential, a wheel transmission device and a drive axle housing. The drive axle can transmit the engine torque from the universal joint to the drive wheels through the final reducer, differential, half shafts, etc., thereby reducing the speed and increasing the torque.

[0003] Existing drive axles often use annular gaskets for sealing the flange where they are mounted to the input shaft. However, during installation, if the bolts are over-tightened, the gaskets may be easily deformed, resulting in tiny gaps and, in turn, oil leakage.

[0004] In view of this, this application is hereby filed. Utility Model Content

[0005] The purpose of the utility model is to provide a drive axle housing with an oil leakage prevention structure on the end surface, so as to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides a drive axle housing with an oil leakage prevention structure on the end face, including a drive axle body, the drive axle body is a hollow structure, a differential is provided in the drive axle body, and a horizontal longitudinal channel two is opened on one side wall of the drive axle body along the length direction. A flange one is provided at an opening on one side of the channel two on the drive axle body, a sealing mechanism is provided between the flange one and the drive axle body, and the sealing mechanism is provided with a channel three extending axially therethrough near the center of one side wall of the drive axle body, the sealing mechanism includes a seal one flange-connected to the drive axle body, the flange one and the seal one are flange-connected to each other, a horizontal rotating shaft one is provided in the channel three, and the flange one is fixedly connected to the side wall away from the drive axle body with the flange two.

[0007] Furthermore, the seal 1 is provided with a groove 1 at the center of a side wall away from the drive bridge body, and the groove 2 is provided at the center of a side wall close to the drive bridge body. The cross-sectional radius of groove 1 and groove 2 are both larger than the cross-sectional radius of channel 3, and the cross-sectional radius of groove 1 is larger than the cross-sectional radius of groove 2. Seal 2 is inserted into groove 1.

[0008] Furthermore, a channel three is provided at the center of one side wall of the sealing member 2, which passes through the sealing member 2 axially. The sealing member 2 includes a coaxially arranged fixing ring 1 and a fixing ring 2. The radius of the inner arc wall of the fixing ring 1 is consistent with that of the channel 3, and the radius of the inner arc wall of the fixing ring 2 is larger than the cross-sectional radius of the channel 3. The fixing ring 2 abuts against the inner wall of the groove 1. The fixing ring 2 is fixedly connected to the side wall of the fixing ring 1. A slot 1 and a slot 2 are provided on a side wall of the fixing ring 1 away from the fixing ring 2. The same sealing member 3 is inserted into the slot 1 and the slot 2.

[0009] Furthermore, slot one on the side wall of the second seal is coaxially arranged with slot two, and the cross-sectional radius of slot one and slot two are both larger than the cross-sectional radius of channel three. The rotating shaft one rotates in the channel three. The third seal includes a fixing column one, a fixing ring three and a fixing ring four. The fixing column is set on the outside of the rotating shaft one, and the fixing ring three and the fixing ring four correspond to slot one and slot two respectively.

[0010] Furthermore, a plurality of protrusions 1 distributed in an annular array and arranged axially along the seal 2 are fixedly connected to the outer arc wall of the fixing ring 1 on the seal 2, and a sliding groove 1 is provided on the inner arc wall of the groove 1 at the position corresponding to the protrusion 1.

[0011] Furthermore, a channel is opened in the radial direction at the bottom end of the inner arc wall of the groove on the seal, and a box is fixedly connected to the bottom end of the side wall of the seal away from the drive axle body. The box is a hollow structure and the box and the channel are interconnected, and the box does not contact the flange.

[0012] Furthermore, a sealed bearing is embedded in the groove 2 on the seal 1, the inner arc wall of the sealed bearing is sleeved on the outer arc wall of the rotating shaft 1, and the outer arc wall of the sealed bearing is provided with a plurality of protrusions 2 distributed in a circular array and arranged along the axial direction of the sealed bearing, and a slide groove 2 is provided on the inner arc wall of the groove 2 at a position corresponding to the protrusion 2.

[0013] Furthermore, the drive axle body, flange plate 1 and one side wall of the seal are all provided with mounting holes of equal number and identical structure, and the drive axle body, flange plate 1 and seal plate 1 are fixedly connected by fixing bolts.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] By adding a sealing mechanism between the drive axle body and the flange, the leakage of internal lubricating oil can be effectively reduced. At the same time, it can also reversely isolate the interference of external dust and impurities to achieve two-way sealing. In addition, a channel is set at the connection between the drive axle body and the flange to collect the leaked lubricating oil, which is convenient for maintenance personnel to intuitively understand whether there is oil leakage, ensuring the sealing of the drive axle while making maintenance more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A cross-sectional view of the structure of a sealing mechanism in a drive axle housing with an oil leakage prevention structure on the end surface;

[0017] Figure 2 This is a schematic diagram of the overall structure of a drive axle housing with an oil leakage prevention structure on the end face;

[0018] Figure 3 for Figure 2 Schematic diagram of the internal structure at A in the middle;

[0019] Figure 4 This is an exploded diagram of the sealing mechanism in a drive axle housing with an oil leakage prevention structure on the end face.

[0020] In the picture:

[0021] 10. Drive axle body; 11. Flange 1; 12. Fixing bolts; 13. Flange 2;

[0022] 14. Rotating axis 1;

[0023] 20. Seal 1; 21. Seal 2; 22. Seal 3; 23. Sealed bearing;

[0024] 30. Box; 31. Channel 1. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-4 The present invention provides a technical solution: comprising a drive axle body 10, the drive axle body 10 being a hollow structure, a differential being provided in the drive axle body 10, a horizontal longitudinally penetrating channel 2 being provided on a side wall of the drive axle body 10 along the length direction, a flange 11 being provided at one side opening of the channel 2 on the drive axle body 10, a sealing mechanism being provided between the flange 11 and the drive axle body 10, a channel 3 being provided near the center of a side wall of the drive axle body 10 and penetrating along the axial direction thereof, the sealing mechanism comprising a sealing member 20 flange-connected to the drive axle body 10, the flange 11 and the sealing member 20 being flange-connected to each other, a horizontal rotating shaft 14 being provided in the channel 3, and a flange 2 13 being fixedly connected to a side wall of the flange 11 away from the drive axle body 10;

[0027] The seal 1 20 is provided with a groove 1 at the center of a side wall away from the drive bridge body 10, and a groove 2 is provided at the center of a side wall close to the drive bridge body 10. The cross-sectional radius of the groove 1 and the groove 2 are both greater than the cross-sectional radius of the channel 3, and the cross-sectional radius of the groove 1 is greater than the cross-sectional radius of the groove 2. The seal 2 21 is inserted into the groove 1;

[0028] A channel 3 is provided at the center of one side wall of the sealing member 21 and extends axially therethrough. The sealing member 21 comprises a coaxially arranged fixing ring 1 and a fixing ring 2. The radius of the inner arc wall of the fixing ring 1 is consistent with that of the channel 3, and the radius of the inner arc wall of the fixing ring 2 is greater than the cross-sectional radius of the channel 3. The fixing ring 2 abuts against the inner wall of the groove 1 and is fixedly connected to the side wall of the fixing ring 1. A slot 1 and a slot 2 are provided on a side wall of the fixing ring 1 away from the fixing ring 2. The same sealing member 3 22 is inserted into the slot 1 and the slot 2.

[0029] The slot 1 on the side wall of the second sealing member 21 is coaxially arranged with the slot 2, and the cross-sectional radius of the slot 1 and the slot 2 is larger than the cross-sectional radius of the channel 3. The rotating shaft 14 rotates in the channel 3. The third sealing member 22 includes a fixing post 1, a fixing ring 3 and a fixing ring 4. The fixing post is set on the outside of the rotating shaft 14. The fixing ring 3 and the fixing ring 4 correspond to the slot 1 and the slot 2 respectively.

[0030] The drive axle body 10 , flange 11 and seal 20 are all provided with mounting holes of equal number and identical structure on their side walls. The drive axle body 10 , flange 11 and seal 20 are all fixedly connected by fixing bolts 12 .

[0031] It should be noted that: first, the various seals in the sealing mechanism are sequentially installed on the drive axle body 10. When the sealed bearing 23 fails or the lubricating oil leaks from the gap between the sealed bearing 23 and the seal 1 20, the lubricating oil will be in the cavity formed by the seal 21 and the seal 1 20. Because the connection between the seal 21 and the seal 3 forms a serpentine bend, the lubricating oil is more likely to fall onto the channel 1 31 at the bottom end of the inner arc wall of the groove 1 under the action of gravity and flow into the box body 30, thereby reducing the possibility of lubricating oil leakage and also isolating it from external impurities and dust.

[0032] The first, second, third and fourth fixing rings are all made of rubber. The third seal 22 does not rotate with the rotation of the first shaft 14 , and the second seal 21 and the third seal 22 are both located in the first flange 11 .

[0033] See also Figure 1-4The utility model provides a technical solution: a plurality of protrusions 1 distributed in a ring array and arranged axially along the seal 21 are fixedly connected to the outer arc wall of the fixing ring 1 on the seal 21, and a sliding groove 1 is provided on the inner arc wall of the groove 1 at the position corresponding to the protrusion 1.

[0034] It should be noted that the first protrusion and the first slide groove facilitate the installation and removal of the second sealing member 21, and the surface of the first protrusion is provided with anti-slip lines.

[0035] See also Figure 1-4 The present invention provides a technical solution: a channel 31 is opened radially at the bottom end of the inner arc wall of the groove on the seal 20, and a box 30 is fixedly connected to the bottom end of the side wall of the seal 20 away from the drive axle body 10. The box 30 is a hollow structure and the box 30 and the channel 31 are interconnected, and the box 30 does not contact the flange 11.

[0036] It should be noted that the box 30 is made of a transparent material and is used to collect the lubricating oil seeping from the gap of the sealed bearing 23, so that maintenance personnel can quickly determine whether there is oil leakage in the drive axle body 10.

[0037] See also Figure 1-4 The utility model provides a technical solution: a sealing bearing 23 is embedded in the groove 2 on the sealing member 20, and the inner arc wall of the sealing bearing 23 is sleeved on the outer arc wall of the rotating shaft 14. The outer arc wall of the sealing bearing 23 is provided with a plurality of protrusions 2 distributed in an annular array and arranged along the axial direction of the sealing bearing 23, and a sliding groove 2 is provided on the inner arc wall of the groove 2 at a position corresponding to the protrusion 2.

[0038] It should be noted that the second protrusion and the second slide groove facilitate the installation and removal of the sealed bearing 23, and the surface of the second protrusion is provided with anti-slip lines.

[0039] Working principle:

[0040] First, install the sealed bearing 23 into the groove 2 on the seal 1 20, then install the rotating shaft 14 into the sealed bearing 23. Assemble the seal 1 20, seal 2 21, and seal 3 22 in sequence, and install them on the channel 2 of the drive axle body 10 with the fixing bolts 12. Then install the flange 11 on the seal 1 20, and install the nuts that match the fixing bolts 12 to complete the installation.

[0041] When the lubricating oil in the drive axle body 10 leaks from the gap between the sealed bearing 23 and the groove 2, due to the serpentine bend formed at the connection between the seal 21 and the seal 3 22, the lubricating oil is more likely to fall into the channel 1 31 at the bottom end of the inner arc wall of the groove 1 under the action of gravity, and then flow into the box body 30. In addition, the seal 21 and the seal 3 22 can reversely isolate the interference of external impurities and dust, effectively realizing two-way sealing.

Claims

1. A drive axle housing with an oil leakage prevention structure on its end surface, comprising a drive axle body (10), wherein the drive axle body (10) is a hollow structure, a differential is provided in the drive axle body (10), and a horizontal longitudinally penetrating channel 2 is provided on a side wall of the drive axle body (10) along the length direction, characterized in that: A flange 1 (11) is provided at one side opening of the channel 2 on the drive bridge body (10), a sealing mechanism is provided between the flange 1 (11) and the drive bridge body (10), a channel 3 is provided near the center of one side wall of the drive bridge body (10) and penetrates along the axial direction thereof, the sealing mechanism comprises a sealing member 1 (20) connected to the drive bridge body (10) by a flange, the flange 1 (11) and the sealing member 1 (20) are flange-connected to each other, a horizontal rotating shaft 1 (14) is provided in the channel 3, and a flange 2 (13) is fixedly connected to the side wall of the flange 1 (11) away from the drive bridge body (10).

2. A drive axle housing with an oil leakage prevention structure on the end surface according to claim 1, characterized in that: The sealing member 1 (20) is provided with a groove 1 at the center of a side wall away from the driving bridge body (10), and a groove 2 is provided at the center of a side wall close to the driving bridge body (10). The cross-sectional radius of the groove 1 and the groove 2 are both greater than the cross-sectional radius of the channel 3, and the cross-sectional radius of the groove 1 is greater than the cross-sectional radius of the groove 2. The sealing member 2 (21) is inserted into the groove 1.

3. A drive axle housing with an oil leakage prevention structure on the end surface according to claim 2, characterized in that: A channel three is provided at the center of one side wall of the sealing member 2 (21) and extends through the sealing member 2 along its axial direction. The sealing member 2 (21) includes a coaxially arranged fixing ring 1 and a fixing ring 2. The radius of the inner arc wall of the fixing ring 1 is consistent with that of the channel three, and the radius of the inner arc wall of the fixing ring 2 is larger than the cross-sectional radius of the channel three. The fixing ring 2 abuts against the inner wall of the groove 1. The fixing ring 2 is fixedly connected to the side wall of the fixing ring 1. A slot 1 and a slot 2 are provided on the side wall of the fixing ring 1 away from the fixing ring 2. The same sealing member 3 (22) is inserted into the slot 1 and the slot 2.

4. A drive axle housing with an oil leakage prevention structure on the end surface according to claim 3, characterized in that: The slot 1 on the side wall of the sealing member 2 (21) is coaxially arranged with the slot 2, and the cross-sectional radius of the slot 1 and the slot 2 is larger than the cross-sectional radius of the channel 3. The rotating shaft 1 (14) rotates in the channel 3. The sealing member 3 (22) includes a fixing column 1, a fixing ring 3 and a fixing ring 4. The fixing column is set on the outside of the rotating shaft 1 (14). The fixing ring 3 and the fixing ring 4 correspond to the slot 1 and the slot 2 respectively.

5. A drive axle housing with an oil leakage prevention structure on the end surface according to claim 3, characterized in that: A plurality of protrusions 1 distributed in an annular array and arranged axially along the seal 2 (21) are fixedly connected to the outer arc wall of the fixing ring 1 on the seal 2 (21), and a sliding groove 1 is provided at a position corresponding to the protrusion 1 on the inner arc wall of the groove 1.

6. A drive axle housing with an oil leakage prevention structure on the end surface according to claim 2, characterized in that: A channel (31) is provided at the bottom end of the inner arc wall of the groove on the sealing member (20) along its radial direction. The bottom end of the side wall of the sealing member (20) away from the drive axle body (10) is fixedly connected to a box (30). The box (30) is a hollow structure and the box (30) and the channel (31) are interconnected. The box (30) does not contact the flange (11).

7. A drive axle housing with an oil leakage prevention structure on the end surface as claimed in claim 2, characterized in that: A sealing bearing (23) is embedded in the groove 2 on the sealing member 1 (20), and the inner arc wall of the sealing bearing (23) is sleeved on the outer arc wall of the rotating shaft 1 (14). The outer arc wall of the sealing bearing (23) is provided with a plurality of protrusions 2 distributed in an annular array and arranged along the axial direction of the sealing bearing (23), and a sliding groove 2 is provided on the inner arc wall of the groove 2 at a position corresponding to the protrusion 2.

8. The drive axle housing with an oil leakage prevention structure on the end surface according to claim 1, characterized in that: The side walls of the drive bridge body (10), flange plate 1 (11) and seal 1 (20) are all provided with mounting holes of equal number and identical structure, and the drive bridge body (10), flange plate 1 (11) and seal 1 (20) are all fixedly connected by fixing bolts (12).

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