CN215398019U - Two-stage deceleration rear axle assembly - Google Patents
Two-stage deceleration rear axle assembly Download PDFInfo
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- CN215398019U CN215398019U CN202121398892.7U CN202121398892U CN215398019U CN 215398019 U CN215398019 U CN 215398019U CN 202121398892 U CN202121398892 U CN 202121398892U CN 215398019 U CN215398019 U CN 215398019U
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- rear axle
- axle assembly
- frame structure
- oil seal
- gear
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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Abstract
The utility model provides a secondary speed reduction rear axle assembly, which comprises a main speed reducer assembly, a rear axle assembly, an installation shell, a wear-resistant brake frame structure, a sealing connection frame structure, a wheel driving shaft and a secondary speed reduction frame structure, wherein the rear axle assembly is respectively connected to the left side and the right side of the main speed reducer assembly in a flange manner; the mounting shell is sleeved on one side of the wheel driving shaft, which is far away from the rear axle assembly; the wear-resistant brake frame structure is arranged at the upper part of the mounting shell; the sealing connecting frame structure is arranged on the left side of the mounting shell. The utility model has the beneficial effects that: through the setting of taper pinion and driven bevel gear, be favorable to carrying out the secondary deceleration to the input power of input shaft, drive great driven bevel gear with less taper pinion equally to constitute second grade deceleration structure with one-level reduction gear and driving gear cooperation, thereby improve the device's deceleration effect, still have the moment of torsion simultaneously and be big, the extensive effect of application occasion.
Description
Technical Field
The utility model belongs to the technical field of rear axle assemblies, and particularly relates to a two-stage deceleration rear axle assembly.
Background
The drive unit of a motor vehicle, known as a drive axle assembly, is a mechanism at the end of the drive train that changes the rotational speed and torque from the transmission and transmits them to the drive wheels. The drive axle generally comprises a main reducer assembly, an axle housing assembly, a disc brake assembly, a hub assembly and the like. The transaxle is also subjected to vertical, longitudinal and lateral forces, as well as braking moments and reaction forces acting between the road surface and the frame or body.
However, the existing two-stage deceleration rear axle assembly also has the problems that the heat dissipation disc is easy to damage after being used for a long time, the deceleration effect is poor and oil leakage is easy to occur at the joint.
Therefore, it is necessary to invent a two-stage deceleration rear axle assembly.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a two-stage deceleration rear axle assembly, wherein the two-stage deceleration rear axle assembly is realized by the following technical scheme:
a secondary speed reduction rear axle assembly comprises a main speed reducer assembly, a rear axle assembly, a mounting shell, a wear-resistant brake frame structure, a sealing connection frame structure, a wheel driving shaft and a secondary speed reduction frame structure, wherein the rear axle assembly is respectively connected to the left side and the right side of the main speed reducer assembly in a flange mode; the mounting shell is sleeved on one side of the wheel driving shaft, which is far away from the rear axle assembly; the wear-resistant brake frame structure is arranged at the upper part of the mounting shell; the sealing connecting frame structure is arranged on the left side of the mounting shell; the wheel driving shaft penetrates through the rear axle assembly and is respectively inserted at the left side and the right side inside the main reducer assembly; the secondary speed reducing frame structure is arranged on the lower portion of the rear end of the main speed reducer assembly.
Preferably, tapered roller bearings are respectively embedded in the left side and the right side of the interior of the mounting shell, and inner rings of the tapered roller bearings are in interference connection with the outer side of the wheel driving shaft.
Preferably, the right side of the tapered roller bearing on the right side in the mounting shell is provided with an end face check ring, and the end face check ring is connected to the outer side of the wheel driving shaft in an interference manner.
Preferably, the right side of the mounting shell is connected with a sealing end cover through a bolt, and the middle position of the left side of the sealing end cover is inserted into the right side of the interior of the wheel driving shaft.
Compared with the prior art, the utility model has the beneficial effects that:
1. in the utility model, the arrangement of the conical pinion and the driven conical gear is beneficial to carrying out secondary speed reduction on the input power of the input shaft, and the smaller conical pinion drives the larger driven conical gear and is matched with the primary reduction gear and the driving gear to form a secondary speed reduction structure, thereby improving the speed reduction effect of the device.
2. According to the utility model, the arrangement of the brake disc, the mounting holes and the bolt holes enables the speed of the brake disc to be reduced by extruding the main brake shoe and the auxiliary brake shoe and matching with the frosting layer on the surface of the brake disc, so that the rapid braking of the brake disc is facilitated, and meanwhile, workers can disassemble the brake disc, so that the brake disc is convenient to replace.
3. According to the brake disc, the arrangement of the heat dissipation holes is beneficial to quickly dissipating high temperature on the surface of the brake disc, and meanwhile, when the brake disc rotates, airflow can occur on the inner sides of the heat dissipation holes and the inner sides of the mounting holes, so that heat is quickly dissipated, the brake disc is protected, and the probability of damage to the brake disc can be reduced by the integrally arranged brake disc.
4. According to the utility model, the oil cylinder, the main brake shoe piece and the auxiliary brake shoe piece are arranged, so that when the device is braked, hydraulic oil pushes the main brake shoe piece to move towards the right side through the oil cylinder, the main brake shoe piece and the auxiliary brake shoe piece are closed, the brake disc can be rapidly braked through pressure and friction, and the braking speed of the device is increased.
5. According to the utility model, the arrangement of the oil seal seat is beneficial to sealing the inner side of the mounting shell, and the inner side of the mounting shell is sufficiently sealed by matching with the sealing end cover on the right side of the mounting shell, so that the lubricating oil on the inner side of the mounting shell is prevented from flowing out to influence the normal lubrication of the tapered roller bearing on the inner side of the mounting shell.
6. According to the utility model, the arrangement of the oil seal retainer and the sealing washer is beneficial to fixing the left side of the oil seal seat and sealing the joint of the oil seal seat and the wheel driving shaft, so that the sealing degree of the oil seal seat to the inner side of the mounting shell is improved, and the service life of the device is further prolonged.
7. In the utility model, the arrangement of the main driving shaft, the primary reduction gear, the driving gear and the input shaft is beneficial to enabling the smaller driving gear to drive the larger primary reduction gear through the mutual meshing of the primary reduction gear and the driving gear, thereby reducing the rotating speed of the wheel driving shaft.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic structural view of the wear-resistant brake frame structure and the seal attachment frame structure of the present invention.
Fig. 3 is a schematic structural view of a brake disc of the present invention.
Fig. 4 is a schematic structural diagram of the two-stage reduction carrier structure of the utility model.
In the figure:
1. a main reducer assembly; 2. a rear axle assembly; 3. mounting a shell; 4. a wear resistant brake frame structure; 41. a load bearing housing; 42. an oil cylinder; 43. a primary brake shoe; 44. a brake disc; 441. a brake disc; 442. mounting holes; 443. bolt holes; 444. heat dissipation holes; 45. a slave brake shoe; 5. a sealed connecting frame structure; 51. an oil seal retainer; 52. a sealing gasket; 53. an oil seal seat; 6. a wheel drive shaft; 7. a secondary reduction frame structure; 71. a bearing seat; 72. a main drive shaft; 73. a tapered pinion gear; 74. a driven bevel gear; 75. a primary reduction gear; 76. a driving gear; 77. an input shaft.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
example (b):
as shown in fig. 1 and fig. 2, a two-stage speed reduction rear axle assembly comprises a main reducer assembly 1, a rear axle assembly 2, a mounting shell 3, a wear-resistant brake frame structure 4, a sealing connection frame structure 5, a wheel driving shaft 6 and a two-stage speed reduction frame structure 7, wherein the rear axle assembly 2 is respectively connected to the left side and the right side of the main reducer assembly 1 in a flange manner; the mounting shell 3 is sleeved on one side of the wheel driving shaft 6, which is far away from the rear axle assembly 2; the wear-resistant brake frame structure 4 is arranged at the upper part of the mounting shell 3; the sealing connecting frame structure 5 is arranged on the left side of the mounting shell 3; the wheel driving shaft 6 penetrates through the rear axle assembly 2 and is respectively inserted at the left side and the right side inside the main reducer assembly 1; the secondary speed reducing frame structure 7 is arranged at the lower part of the rear end of the main speed reducer assembly 1; the wear-resistant brake frame structure 4 comprises a bearing shell 41, an oil cylinder 42, a main brake shoe 43, a brake disc 44 and a slave brake shoe 45, wherein the oil cylinder 42 is inserted in the left side inside the bearing shell 41; the main brake shoe 43 is connected to the right side of the oil cylinder 42 through a bolt; the brake disc 44 is arranged on the outer side of the mounting shell 3; the slave brake shoe 45 is connected to the right side of the inner part of the bearing shell 41 through bolts; the hydraulic oil enters the inner side of the bearing shell 41, the oil cylinder 42 pushes the main brake shoe 43 to move towards the right side, meanwhile, the reverse acting force drives the bearing shell 41 and the auxiliary brake shoe 45 to move towards the left side, and the rotating speed of the brake disc 44 is reduced or stopped through the extrusion of the main brake shoe 43 and the auxiliary brake shoe 45.
As shown in fig. 3, in the above embodiment, specifically, the brake disc 44 includes a brake disc 441, a mounting hole 442, a bolt hole 443 and a heat dissipation hole 444, and the mounting hole 442 is opened at an inner middle position of the brake disc 441; the bolt holes 443 are formed in the upper peripheral position of the brake disc 441 and are arranged on the outer side of the upper portion of the mounting hole 442; the heat dissipation holes 444 are respectively formed in the periphery of the inner side of the brake disc 441; when disc 441 rubs against main brake shoe 43 and sub brake shoe 45, the high temperature generated is transmitted to the inside of mounting hole 442 through heat dissipation hole 444, and air flowing through the inside of mounting hole 442 and heat dissipation hole 444 is rapidly dissipated.
As shown in fig. 2, in the above embodiment, specifically, the seal connecting frame structure 5 includes an oil seal retainer 51, a seal washer 52 and an oil seal seat 53, the oil seal retainer 51 is sleeved on the outer side of the wheel driving shaft 6, and the right side is inserted into the left side of the interior of the mounting shell 3; the sealing washer 52 is embedded at the right side inside the oil seal retainer 51, and the inner side of the sealing washer is tightly attached to the left side outside the oil seal seat 53; the oil seal seat 53 is inserted at the right side inside the oil seal retainer 51 of the oil seal seat 53, and one side far away from the oil seal retainer 51 is inserted at the left side inside the mounting shell 3; the oil seal retainer 51, the seal washer 52, and the oil seal holder 53 seal the inside of the mounting case 3, respectively.
As shown in fig. 4, in the above embodiment, specifically, the two-stage reduction gear rack structure 7 includes a bearing seat 71, a main driving shaft 72, a bevel pinion 73, a driven bevel gear 74, a primary reduction gear 75, a driving gear 76 and an input shaft 77, the main driving shaft 72 is coupled to the left inside the bearing seat 71, and the upper portion extends to the left upper portion of the bearing seat 71; the conical pinion 73 is in key connection with the upper part of the main driving shaft 72; the driven bevel gear 74 is arranged at the upper right side of the bevel pinion 73; the primary reduction gear 75 is arranged on the left side of the inner part of the bearing seat 71; the driving gear 76 is arranged at the right side inside the bearing seat 71; the input shaft 77 is coupled to the right side of the inside of the bearing seat 71, and the lower part of the input shaft extends to the right side of the lower part of the bearing seat 71; the input shaft 77 drives the driving gear 76 to rotate, so that the smaller driving gear 76 drives the larger first-stage reduction gear 75 to rotate, the device is subjected to first speed reduction, the first-stage reduction gear 75 drives the conical pinion 73 to rotate through the main driving shaft 72, the smaller conical pinion 73 drives the larger driven conical gear 74 to rotate according to the same principle, the device is subjected to second speed reduction, and the device is matched with the first-stage reduction gear 75 and the driving gear 76, so that the device is subjected to second speed reduction.
In the above embodiment, specifically, tapered roller bearings are respectively embedded in the left side and the right side of the inside of the mounting shell 3, and the inner rings of the tapered roller bearings are in interference connection with the outer side of the wheel driving shaft 6, so that the abrasion of the rotating part of the device is reduced.
In the above embodiment, specifically, the end face retainer ring is installed on the right side of the tapered roller bearing on the right side inside the installation shell 3, and the end face retainer ring is connected to the outer side of the wheel drive shaft 6 in an interference manner to axially fix the tapered roller bearing.
In the above embodiment, specifically, the right side of the mounting shell 3 is bolted with a sealing end cover, and the middle position of the left side of the sealing end cover is inserted into the right side of the wheel driving shaft 6, so as to seal the right side of the inside of the mounting shell 3.
In the above embodiment, specifically, the oil seal retainer 51 and the oil seal holder 53 are respectively sleeved on the outer left side of the wheel driving shaft 6, and the inner left side of the oil seal retainer 51 is in interference connection with the outer left side of the wheel driving shaft 6, so as to seal the inner left side of the mounting shell 3.
In the above embodiment, specifically, the brake disc 441 is sleeved on the outer side of the mounting shell 3, the mounting shell 3 is connected with the brake disc 441 through the bolt hole 443 by bolts, the mounting shell 3 is inserted into the mounting hole 442, and the brake disc 441 is conveniently detached.
In the above embodiment, specifically, the upper surface and the lower surface of the brake disc 441 are respectively provided with a frosting layer, and the inner sides of the heat dissipation holes 444 are respectively communicated with the periphery of the inner side of the mounting hole 442, so as to improve the heat dissipation effect and the wear-resistant effect of the brake disc 441.
In the above embodiment, specifically, the master brake shoe 43 is disposed on the left side of the upper portion of the brake disc 441, and the slave brake shoe 45 is disposed on the right side of the upper portion of the brake disc 441, so as to perform quick braking on the brake disc 441.
In the above embodiment, specifically, the primary reduction gear 75 and the driving gear 76 are engaged with each other, the primary reduction gear 75 is spline-connected to the lower portion of the main drive shaft 72, and the driving gear 76 is spline-connected to the upper portion of the input shaft 77, so as to perform primary reduction of the device.
In the above embodiment, specifically, the driven bevel gear 74 is disposed at the right side inside the final drive assembly 1 and is keyed with the wheel driving shaft 6 at a position inside the final drive assembly 1.
In the above embodiment, specifically, the right upper portion of the bevel pinion 73 is engaged with the left side of the lower portion of the driven bevel gear 74, and a primary reduction gear and a driving gear are matched to form a two-stage reduction structure, so as to improve the reduction effect of the device.
Principle of operation
The working principle of the utility model is as follows: when in use, the input shaft 77 drives the driving gear 76 to rotate, so that the smaller driving gear 76 drives the larger first-stage reduction gear 75 to rotate, the device is subjected to first speed reduction, the first-stage reduction gear 75 drives the conical pinion 73 to rotate through the main driving shaft 72, the smaller conical pinion 73 drives the larger driven conical gear 74 to rotate according to the same principle, the device is subjected to second speed reduction, and is matched with the first-stage reduction gear 75 and the driving gear 76, so that the device is subjected to second-stage speed reduction to increase the speed reduction effect, and can be matched with the wear-resistant brake frame structure 4 to be used, hydraulic oil enters the inner side of the bearing shell 41, pushes the main brake shoe 43 to move towards the right side through the oil cylinder 42, meanwhile, the reverse acting force drives the bearing shell 41 and the auxiliary brake shoe 45 to move towards the left, and is extruded by the main brake shoe 43 and the auxiliary brake shoe 45, when the rotation speed of disc 441 is reduced or stopped and disc 441 rubs against main brake shoe 43 and sub brake shoe 45, the generated high temperature is transmitted to the inner side of mounting hole 442 through heat radiation hole 444, and air flowing through mounting hole 442 and the inner side of heat radiation hole 444 is quickly dissipated.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention.
Claims (10)
1. A two-stage speed reduction rear axle assembly is characterized by comprising a main speed reducer assembly (1), a rear axle assembly (2), an installation shell (3), a wear-resistant brake frame structure (4), a sealing connection frame structure (5), a wheel driving shaft (6) and a two-stage speed reduction frame structure (7), wherein the rear axle assembly (2) is respectively connected to the left side and the right side of the main speed reducer assembly (1) in a flange manner; the mounting shell (3) is sleeved on one side, away from the rear axle assembly (2), of the wheel driving shaft (6); the wear-resistant brake frame structure (4) is arranged on the upper part of the mounting shell (3); the sealing connecting frame structure (5) is arranged on the left side of the mounting shell (3); the wheel driving shaft (6) penetrates through the rear axle assembly (2) and is respectively inserted at the left side and the right side inside the main reducer assembly (1); the secondary speed reducing frame structure (7) is arranged at the lower part of the rear end of the main speed reducer assembly (1); the wear-resistant brake frame structure (4) comprises a bearing shell (41), an oil cylinder (42), a main brake shoe (43), a brake disc (44) and a secondary brake shoe (45), wherein the oil cylinder (42) is inserted into the left side of the inside of the bearing shell (41); the main brake shoe piece (43) is connected to the right side of the oil cylinder (42) through a bolt; the brake disc (44) is arranged on the outer side of the mounting shell (3); the slave brake shoe (45) is connected to the right side of the inner part of the bearing shell (41) through bolts.
2. The two-stage deceleration rear axle assembly according to claim 1, wherein said brake disk (44) comprises a brake disk (441), mounting holes (442), bolt holes (443) and heat dissipating holes (444), said mounting holes (442) being opened at an inner middle position of said brake disk (441); the bolt holes (443) are formed in the periphery of the upper portion of the brake disc (441) and are arranged on the outer side of the upper portion of the mounting hole (442); the heat dissipation holes (444) are respectively formed in the periphery of the inner side of the brake disc (441).
3. The two-stage deceleration rear axle assembly according to claim 1, wherein the sealing connection frame structure (5) comprises an oil seal retainer (51), a sealing washer (52) and an oil seal seat (53), the oil seal retainer (51) is sleeved on the outer side of the wheel driving shaft (6), and the right side is inserted into the left side of the inside of the mounting shell (3); the sealing washer (52) is embedded in the right side of the inner part of the oil seal retainer (51), and the inner side of the sealing washer is tightly attached to the left side of the outer part of the oil seal seat (53); the oil seal seat (53) is inserted in the right side of the inner part of the oil seal retainer (51) of the oil seal seat (53), and one side far away from the oil seal retainer (51) is inserted in the left side of the inner part of the mounting shell (3).
4. The two-stage reduction rear axle assembly according to claim 1, wherein the two-stage reduction carrier structure (7) comprises a bearing seat (71), a main driving shaft (72), a bevel pinion (73), a driven bevel gear (74), a primary reduction gear (75), a driving gear (76) and an input shaft (77), the main driving shaft (72) is coupled to the inner left side of the bearing seat (71), and the upper part of the main driving shaft extends to the upper left side of the bearing seat (71); the conical pinion (73) is in key connection with the upper part of the main driving shaft (72); the driven bevel gear (74) is arranged on the right side of the upper part of the bevel pinion (73); the primary reduction gear (75) is arranged on the left side of the inside of the bearing seat (71); the driving gear (76) is arranged on the right side inside the bearing seat (71); the input shaft (77) is coupled to the right side of the inside of the bearing seat (71), and the lower part of the input shaft extends to the right side of the lower part of the bearing seat (71).
5. The two-stage deceleration rear axle assembly according to claim 3, wherein the oil seal retainer (51) and the oil seal seat (53) are respectively sleeved on the outer left side of the wheel drive shaft (6), and the inner left side of the oil seal retainer (51) is in interference connection with the outer left side of the wheel drive shaft (6).
6. The two-stage deceleration rear axle assembly according to claim 2, wherein the brake disc (441) is sleeved outside the mounting shell (3), the mounting shell (3) is connected with the brake disc (441) through a bolt hole (443) in a bolt manner, and the mounting shell (3) is inserted inside the mounting hole (442).
7. The two-stage deceleration rear axle assembly according to claim 2, wherein the upper surface and the lower surface of the brake disc (441) are respectively provided with a frosted layer, and the inner sides of the heat dissipation holes (444) are respectively communicated with the inner peripheral positions of the mounting holes (442).
8. The two-stage deceleration rear axle assembly according to claim 2, wherein said master brake shoe (43) is disposed on the upper left side of the brake disc (441) and said slave brake shoe (45) is disposed on the upper right side of the brake disc (441).
9. The two-stage reduction rear axle assembly according to claim 4, wherein the primary reduction gear (75) and the drive gear (76) are engaged with each other, the primary reduction gear (75) is splined to the lower portion of the main drive shaft (72), and the drive gear (76) is splined to the upper portion of the input shaft (77).
10. The two-stage reduction rear axle assembly according to claim 4, wherein the driven bevel gear (74) is arranged on the inner right side of the final drive assembly (1) and is keyed to the wheel drive shaft (6) at a position inside the final drive assembly (1); the right upper part of the conical pinion (73) is meshed with the left side of the lower part of the driven conical gear (74).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121398892.7U CN215398019U (en) | 2021-06-23 | 2021-06-23 | Two-stage deceleration rear axle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121398892.7U CN215398019U (en) | 2021-06-23 | 2021-06-23 | Two-stage deceleration rear axle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215398019U true CN215398019U (en) | 2022-01-04 |
Family
ID=79641127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121398892.7U Active CN215398019U (en) | 2021-06-23 | 2021-06-23 | Two-stage deceleration rear axle assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215398019U (en) |
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2021
- 2021-06-23 CN CN202121398892.7U patent/CN215398019U/en active Active
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