Automobile rear axle active oil supply system
By setting up an active oil supply system in the rear axle transfer box of the car, and using an oil pump and annular oil injection pipe to spray the filtered lubricating oil on the surface of the transmission piece, the problem that the oil inside the rear axle transfer box cannot be actively supplied is solved, effectively lubrication of the transmission piece and reducing wear.
Patent Information
- Application Number
- CN202421669583.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-07-15
AI Technical Summary
The lubricating oil inside the rear axle transfer box of the car cannot be actively supplied with oil, resulting in the transmission being unlubricated during the start-up process, resulting in excessive wear.
An active oil supply system for the rear axle of the automobile is designed, including an oil pump, a liquid extraction pipe, a liquid discharge pipe and annular oil injection pipe. The oil from the bottom of the inner cavity of the rear axle shell is extracted through the oil pump, and after filtering, it is sprayed onto the surface of the transmission through the annular oil injection pipe to achieve active oil supply and lubrication.
It effectively avoids the disadvantage of traditional oils that require the transmission to be agitated and splashed to lubricate, and realizes multi-directional active oil supply and lubrication of the transmission, reducing wear and improving the lubrication effect of the system.
Smart Images
Figure CN222668867U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile rear axle auxiliary equipment, in particular to an automobile rear axle active oil supply system. Background Art
[0002] The rear axle of a car is a component of the rear drive shaft for power transmission of the vehicle. In a rear-wheel drive car, a transfer case is generally provided in the middle section of the rear axle of the car, the purpose of which is to transmit the driving force of the drive shaft to the rear wheel axle. The inventor of the utility model has found that since there are transmission parts inside the transfer case of the rear axle, a certain amount of lubricating oil is also injected into the transfer case. The oil is basically sprayed onto the surface of the transmission parts by the stirring and splashing after the operation of the transmission parts. Before the car is started, the oil inside the transfer case will be deposited at the bottom of the rear axle housing due to gravity. Because the oil needs to rely on the operation of the transmission parts to lubricate the surface of the transmission parts, this causes excessive wear of the transmission parts that are not wrapped in oil. Therefore, those skilled in the art hereby propose a technical solution for an active oil supply system for the rear axle of a car. Utility Model Content
[0003] In view of the defect that the oil in the rear axle transfer case of a rear-wheel drive vehicle cannot be actively supplied with oil in the above background technology, and the transfer case is in an unlubricated state during the starting process, resulting in excessive wear of the internal transmission parts of the transfer case, a technical solution of an active oil supply system for a rear axle of an automobile is provided; the system comprises a rear axle housing, two inner half shafts are rotatably arranged on both sides of the inner cavity of the rear axle housing, two outer half shafts are rotatably arranged in the left and right end ports of the rear axle housing, a transmission shaft is arranged on the front side surface of the rear axle housing, and an active oil supply system penetrating into the inner cavity of the rear axle housing is installed on the top surface of the rear axle housing;
[0004] The active oil supply system includes an oil pump fixed to the top surface of the rear axle housing, a liquid suction pipe connected to the oil pump inlet port, and a liquid discharge pipe connected to the oil pump outlet port; wherein the end of the liquid suction pipe is connected to an oil filter assembly located in the inner cavity of the rear axle housing, and the end of the oil filter assembly away from the liquid suction pipe is connected to the oil suction pipe; the end of the liquid discharge pipe away from the oil pump penetrates into the inner cavity of the rear axle housing and is connected to a top annular oil injection pipe, and the bottom surface of the top annular oil injection pipe is respectively connected to two right annular oil injection pipes and left annular oil injection pipes sleeved on the outer ring of the inner half shaft on the left and right sides;
[0005] The oil filter assembly includes a filter tank, an upper end cover covering an upper port of the filter tank, and a filter cartridge placed in the inner cavity of the filter tank;
[0006] The top annular fuel injection pipe, the right annular fuel injection pipe and the left annular fuel injection pipe are all hollow rings, and the bottom surface of the top annular fuel injection pipe is penetrated by 10-15 manifolds arranged in a ring array, and the left and right side surfaces of the right annular fuel injection pipe and the left annular fuel injection pipe are penetrated by 10-15 manifolds arranged in a ring array.
[0007] In the above-mentioned technical solution of the active oil supply system for the rear axle of an automobile, preferably, the bottom surface of the oil pump is connected to the top surface of the rear axle housing by screw locking, and the power supply end of the oil pump is connected to the automobile battery through a wiring harness, wherein the power control end of the oil pump is connected to the automobile ECU computer motherboard, which is used to power the oil pump after the automobile is powered on, and the left and right sides of the top of the rear axle housing are fixedly connected with rear axle hangers for suspending the rear axle housing on the rear floor of the automobile.
[0008] In the above-mentioned technical solution of the active oil supply system for the rear axle of an automobile, preferably, two through holes are opened on the top surface of the rear axle housing, and a liquid suction pipe joint and a liquid discharge pipe joint are respectively fixed inside the through holes, wherein the top port of the liquid suction pipe joint is connected to the end of the liquid suction pipe away from the oil pump, and the top port of the liquid discharge pipe joint is connected to the end of the liquid discharge pipe away from the oil pump.
[0009] In the above-mentioned technical solution of the active oil supply system for the rear axle of an automobile, preferably, the top annular fuel injection pipe is located in the top space of the inner cavity of the rear axle housing between the inner half-shaft, and a bent pipe is connected through the left surface of the top annular fuel injection pipe, and one end of the bent pipe away from the top annular fuel injection pipe is connected to the bottom port of the drain pipe joint located in the inner cavity of the rear axle housing.
[0010] In the above-mentioned technical solution of the active oil supply system for the rear axle of an automobile, preferably, the bottom surface of the top annular fuel injection pipe is connected through two left and right mirror-symmetrical extension pipes, and one end of the extension pipe away from the top annular fuel injection pipe respectively penetrates into the inner cavity of the left annular fuel injection pipe and the right annular fuel injection pipe; wherein the inner cavity spaces of the top annular fuel injection pipe, the extension pipe, the left annular fuel injection pipe and the right annular fuel injection pipe are interconnected.
[0011] In the above-mentioned technical solution of the active oil supply system for the rear axle of an automobile, preferably, a circle of fixing rings are fixed to the top port edge of the filter tank and the bottom port edge of the upper end cover, and the two fixing rings are locked by 6-8 hexagon socket screws.
[0012] In the above-mentioned technical solution of the active oil supply system for the rear axle of an automobile, preferably, a connecting pipe is connected through the top surface of the upper end cover, and the end of the connecting pipe away from the upper end cover is fixedly connected to the bottom end port of the liquid extraction pipe joint located in the inner cavity of the rear axle housing.
[0013] In the above-mentioned technical solution of the active oil supply system for the rear axle of an automobile, preferably, the top end face of the filter tank is provided with a groove for coupling and placing the top frame of the outer ring of the filter cartridge, and there is a spacing of 2-4 cm between the outer ring surface of the filter cartridge and the inner cavity side wall of the filter tank for the oil liquid to flow through the spacing.
[0014] In the above-mentioned technical solution of the active oil supply system for the rear axle of an automobile, preferably, 3-5 magnet bars are placed on the bottom surface of the inner cavity of the filter cartridge to absorb metal debris in the oil.
[0015] In the above-mentioned technical solution of the active oil supply system for the rear axle of an automobile, preferably, the top end of the oil suction pipe penetrates into the bottom space of the inner cavity of the filter tank, and the bottom end of the oil suction pipe extends into the bottom space of the inner cavity of the rear axle housing and has a spacing of 4-7 cm from the side wall of the bottom of the inner cavity of the rear axle housing.
[0016] It can be seen from the above technical solutions that the utility model provides an active oil supply system for the rear axle of an automobile. Compared with the prior art, the utility model has the following beneficial effects:
[0017] The technical solution of the utility model is to set an oil pump and a pipe in the transfer case of the rear axle of the automobile, and to filter and extract the oil deposited at the bottom of the transfer case before the transmission parts inside the rear axle transfer case are in operation, and to transport the filtered oil to the top annular oil spray pipe and the annular oil spray pipes on both sides, and to spray the oil onto the surface of the transmission parts by using a plurality of manifolds on the surface of the annular oil spray pipe to achieve lubrication thereof, and to avoid the disadvantage that the traditional oil needs the transmission parts to be stirred and splashed for lubrication, and to play the role of active oil supply. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments of the utility model or the prior art description are briefly introduced and described below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0019] Figure 1 It is the overall structural diagram of the rear axle of the automobile;
[0020] Figure 2 It is a partial exploded schematic diagram of the rear axle of the car;
[0021] Figure 3 It is a schematic diagram of the cutaway of the rear axle housing;
[0022] Figure 4 It is the overall schematic diagram of the active oil supply system;
[0023] Figure 5 Schematic diagram of the oil filter component in the active oil supply system.
[0024] Attached Figure 1 -Attached Figure 5 The corresponding relationship of the parts is as follows:
[0025] 1. Rear axle housing; 2. Rear axle hanger; 3. Drive shaft; 4. Outer half shaft; 5. Active oil supply system; 51. Oil pump; 52. Drain pipe; 53. Drain pipe joint; 54. Top annular fuel injection pipe; 55. Right annular fuel injection pipe; 56. Manifold; 57. Left annular fuel injection pipe; 58. Oil extraction pipe; 59. Oil filter assembly; 591. Filter tank; 592. Connecting pipe; 593. Upper end cover; 594. Filter cartridge; 510. Extraction pipe joint; 511. Extraction pipe; 6. Inner half shaft. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] In order to more clearly explain and illustrate the technical solution and implementation of the present utility model, several preferred specific embodiments for implementing the technical solution of the present utility model are introduced below.
[0028] Embodiment: A preferred technical solution for an active oil supply system for a rear axle of an automobile:
[0029] It includes a rear axle housing 1, two inner half shafts 6 are rotatably arranged on both sides of the inner cavity of the rear axle housing 1, two outer half shafts 4 are rotatably arranged in the left and right end ports of the rear axle housing 1, and a transmission shaft 3 is arranged on the front side surface of the rear axle housing 1, and an active oil supply system 5 penetrating into the inner cavity of the rear axle housing 1 is installed on the top surface of the rear axle housing 1;
[0030] The active oil supply system 5 includes an oil pump 51 fixed on the top surface of the rear axle housing 1, a liquid suction pipe 511 connected to the liquid inlet port of the oil pump 51, and a liquid discharge pipe 52 connected to the liquid outlet port of the oil pump 51; wherein, the end of the liquid suction pipe 511 is connected to an oil filter assembly 59 located in the inner cavity of the rear axle housing 1, and the end of the oil filter assembly 59 away from the liquid suction pipe 511 is connected to an oil suction pipe 58; the end of the liquid discharge pipe 52 away from the oil pump 51 penetrates into the inner cavity of the rear axle housing 1 and is connected to a top annular oil injection pipe 54, and the bottom surface of the top annular oil injection pipe 54 is respectively connected to two right annular oil injection pipes 55 and left annular oil injection pipes 57 sleeved on the outer ring of the inner half shaft 6 on the left and right sides; the oil filter assembly 59 includes a filter tank 591, an upper end cover 593 covering the upper port of the filter tank 591, and a filter cartridge 594 is placed in the inner cavity of the filter tank 591;
[0031] The top annular fuel injection pipe 54, the right annular fuel injection pipe 55 and the left annular fuel injection pipe 57 are all hollow rings, and the bottom surface of the top annular fuel injection pipe 54 is penetrated by 10-15 manifolds 56 arranged in a ring array, and the left and right side surfaces of the right annular fuel injection pipe 55 and the left annular fuel injection pipe 57 are penetrated by 10-15 manifolds 56 arranged in a ring array.
[0032] The bottom surface of the oil pump 51 is connected to the top surface of the rear axle housing 1 by screw locking, and the power supply end of the oil pump 51 is connected to the car battery through a wiring harness, wherein the power control end of the oil pump 51 is connected to the car ECU computer motherboard, which is used to power the oil pump 51 after the car is powered on, and the left and right sides of the top of the rear axle housing 1 are fixedly connected with the rear axle hanger 2, which is used for the rear axle housing 1 to be suspended on the rear bottom plate of the car. The top surface of the rear axle housing 1 is provided with two through holes, and the inside of the through holes are respectively fixed with a liquid extraction pipe joint 510 and a liquid discharge pipe joint 53, wherein the top end of the liquid extraction pipe joint 510 is connected to the end of the liquid extraction pipe 511 away from the oil pump 51, and the top end of the liquid discharge pipe joint 53 is connected to the end of the liquid discharge pipe 52 away from the oil pump 51.
[0033] The top annular fuel injection pipe 54 is located in the top space of the inner cavity of the rear axle housing 1, above the inner half shaft 6, and a bend pipe is connected through the left surface of the top annular fuel injection pipe 54, and the end of the bend pipe away from the top annular fuel injection pipe 54 is connected to the bottom port of the drain pipe joint 53 located in the inner cavity of the rear axle housing 1. Two left and right mirror-symmetrical extension pipes are connected through the bottom surface of the top annular fuel injection pipe 54, and the ends of the extension pipes away from the top annular fuel injection pipe 54 respectively penetrate into the inner cavities of the left annular fuel injection pipe 57 and the right annular fuel injection pipe 55; wherein, the inner cavities of the top annular fuel injection pipe 54, the extension pipe, the left annular fuel injection pipe 57 and the right annular fuel injection pipe 55 are mutually connected.
[0034] A ring is fixed to the top port edge of the filter tank 591 and the bottom port edge of the upper end cover 593, and the two rings are locked by 6-8 hexagon socket screws. A connecting pipe 592 is connected through the top surface of the upper end cover 593, and the end of the connecting pipe 592 away from the upper end cover 593 is fixedly connected to the bottom end port of the liquid extraction pipe joint 510 located in the inner cavity of the rear axle housing 1.
[0035] The top end surface of the filter tank 591 is provided with a groove for coupling the top frame of the outer ring of the filter cartridge 594, and there is a 2-4 cm gap between the outer ring surface of the filter cartridge 594 and the inner cavity side wall of the filter tank 591, for the oil to flow through the gap. 3-5 magnet bars are placed on the inner cavity bottom surface of the filter cartridge 594 to absorb metal debris in the oil. The top end of the oil extraction pipe 58 penetrates into the inner cavity bottom space of the filter tank 591, and the bottom end of the oil extraction pipe 58 extends into the inner cavity bottom space of the rear axle housing 1 and has a 4-7 cm gap with the inner cavity bottom side wall of the rear axle housing 1.
[0036] According to the above-mentioned preferred technical solution, the workflow of the technical solution is described as follows:
[0037] Before the car is started, the lubricating oil in the rear axle housing 1 is stationary at the bottom of the inner cavity of the rear axle housing 1. After the car is powered on, the oil pump 51 is powered and extracts the oil at the bottom of the inner cavity of the rear axle housing 1 to the filter tank 591 through the oil extraction pipe 58. The oil is filtered by the mesh after passing through the filter cartridge 594, and the metal debris entrained in the oil is adsorbed by the magnet bar inside the filter cartridge 594. The purified oil enters the oil pump 51 under the action of continuous extraction, and the oil pump 51 transports the oil to the top annular oil sprayer through the discharge pipe 52. Inside the tube 54, at this time, the top annular oil injection pipe 54 relies on the manifold 56 to spray the oil from top to bottom onto the transmission parts inside the rear axle housing 1; and the right annular oil injection pipe 55 and the left annular oil injection pipe 57 are connected to the inner cavity space of the top annular oil injection pipe 54, so a part of the oil enters the right annular oil injection pipe 55 and the left annular oil injection pipe 57, and relies on the manifold 56 on the surface of the right annular oil injection pipe 55 and the left annular oil injection pipe 57 to spray the oil to the left and right sides, thereby realizing the multi-directional active oil supply and lubrication effect on the internal transmission parts of the transfer case.
[0038] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone should know that the structural changes made under the inspiration of the present utility model, and all the technical solutions with the same or similar technical solutions as the present utility model, fall within the protection scope of the present utility model. Finally, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions that can be implemented in this application, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical content disclosed in this application.
Claims
1. An active oil supply system for a rear axle of an automobile, comprising a rear axle housing (1), characterized in that: Two inner half shafts (6) are rotatably arranged on both sides of the inner cavity of the rear axle housing (1), two outer half shafts (4) are rotatably arranged in left and right end ports of the rear axle housing (1), a transmission shaft (3) is arranged on the front side surface of the rear axle housing (1), and an active oil supply system (5) penetrating into the inner cavity of the rear axle housing (1) is installed on the top surface of the rear axle housing (1); The active oil supply system (5) comprises an oil pump (51) fixed on the top surface of the rear axle housing (1), a liquid extraction pipe (511) connected to the liquid inlet port of the oil pump (51), and a liquid discharge pipe (52) connected to the liquid outlet port of the oil pump (51); wherein the end of the liquid extraction pipe (511) is connected to an oil filter assembly (59) located in the inner cavity of the rear axle housing (1), and the end of the oil filter assembly (59) away from the liquid extraction pipe (511) is connected to an oil extraction pipe (58); the end of the liquid discharge pipe (52) away from the oil pump (51) penetrates into the inner cavity of the rear axle housing (1) and is connected to a top annular oil injection pipe (54), and the bottom surface of the top annular oil injection pipe (54) is respectively penetrated and connected to two right annular oil injection pipes (55) and left annular oil injection pipes (57) sleeved on the outer ring of the inner half shaft (6) on the left and right sides; The oil filter assembly (59) comprises a filter tank (591), an upper end cover (593) covering an upper port of the filter tank (591), and a filter cartridge (594) placed in the inner cavity of the filter tank (591); The top annular fuel injection pipe (54), the right annular fuel injection pipe (55) and the left annular fuel injection pipe (57) are all hollow annular shapes, and the bottom surface of the top annular fuel injection pipe (54) is penetrated by 10 to 15 manifolds (56) arranged in an annular array, and the left and right side surfaces of the right annular fuel injection pipe (55) and the left annular fuel injection pipe (57) are penetrated by 10 to 15 manifolds (56) arranged in an annular array.
2. The active oil supply system for rear axles of automobiles according to claim 1, characterized in that: The bottom surface of the oil pump (51) is connected to the top surface of the rear axle housing (1) by screw locking, and the power supply end of the oil pump (51) is connected to the vehicle battery through a wiring harness, wherein the power control end of the oil pump (51) is connected to the vehicle ECU computer motherboard for supplying power to the oil pump (51) after the vehicle is powered on, and rear axle hangers (2) are fixedly connected to the left and right sides of the top of the rear axle housing (1) for suspending the rear axle housing (1) on the rear bottom plate of the vehicle.
3. The active oil supply system for rear axle of an automobile according to claim 1, characterized in that: The top surface of the rear axle housing (1) is provided with two through holes, and a liquid suction pipe joint (510) and a liquid discharge pipe joint (53) are respectively fixed inside the through holes, wherein the top end of the liquid suction pipe joint (510) is connected to an end of the liquid suction pipe (511) away from the oil pump (51), and the top end of the liquid discharge pipe joint (53) is connected to an end of the liquid discharge pipe (52) away from the oil pump (51).
4. The active oil supply system for rear axles of automobiles according to claim 1, characterized in that: The top annular fuel injection pipe (54) is located in the top space of the inner cavity of the rear axle housing (1) above the inner half shaft (6), and a bend pipe is connected through the left surface of the top annular fuel injection pipe (54), and one end of the bend pipe away from the top annular fuel injection pipe (54) is connected to the bottom port of the drain pipe joint (53) located in the inner cavity of the rear axle housing (1).
5. The active oil supply system for rear axle of an automobile according to claim 1, characterized in that: The bottom surface of the top annular fuel injection pipe (54) is connected to two left and right mirror-symmetrical extension pipes, and the ends of the extension pipes away from the top annular fuel injection pipe (54) respectively penetrate into the inner cavities of the left annular fuel injection pipe (57) and the right annular fuel injection pipe (55); wherein the inner cavities of the top annular fuel injection pipe (54), the extension pipes, the left annular fuel injection pipe (57) and the right annular fuel injection pipe (55) are interconnected.
6. The active oil supply system for rear axle of an automobile according to claim 1, characterized in that: A circle of fixing rings are fixed to the edge of the top port of the filter tank (591) and the edge of the bottom port of the upper end cover (593), and the two fixing rings are locked by 6-8 hexagon socket screws.
7. The active oil supply system for rear axles of automobiles according to claim 1, characterized in that: A connecting pipe (592) is connected through the top surface of the upper end cover (593), and one end of the connecting pipe (592) away from the upper end cover (593) is fixedly connected to the bottom end port of the liquid extraction pipe joint (510) located in the inner cavity of the rear axle housing (1).
8. The active oil supply system for rear axles of automobiles according to claim 1, characterized in that: The top end surface of the filter tank (591) is provided with a groove for coupling and placing the outer ring top frame of the filter cartridge (594), and a gap of 2-4 cm is provided between the outer ring surface of the filter cartridge (594) and the inner cavity side wall of the filter tank (591) for allowing oil to flow through the gap.
9. The active oil supply system for rear axles of automobiles according to claim 1, characterized in that: 3-5 magnet bars are placed on the bottom surface of the inner cavity of the filter cartridge (594) to absorb metal debris in the oil.
10. The active oil supply system for rear axles of automobiles according to claim 1, characterized in that: The top end of the oil extraction pipe (58) penetrates into the bottom space of the inner cavity of the filter tank (591), and the bottom end of the oil extraction pipe (58) extends into the bottom space of the inner cavity of the rear axle housing (1) and is spaced 4-7 cm from the side wall of the bottom space of the inner cavity of the rear axle housing (1).