CN214984816U - Semi-axle sleeve assembly, transmission system and vehicle - Google Patents

Abstract

The utility model provides a semi-axis sleeve assembly, transmission system and vehicle relates to the automotive technology field, semi-axis sleeve assembly, be applied to the vehicle that has main reducer casing, semi-axis, first bearing and sealing member, the through-hole has been seted up to main reducer casing, the semi-axis passes through first bearing wears to locate in the through-hole, semi-axis sleeve assembly includes: a barrel and a vent valve; the first end of the cylinder body is embedded in the through hole; the half shaft penetrates through the cylinder body; the barrel is provided with a vent hole close to the first end. The main reducer casing accessible barrel is seted up the air vent and is realized and the intercommunication of external gas, has guaranteed that the inside pressure of main reducer casing maintains certain level, need not directly to set up the air vent above the main reducer casing, has just also avoided the problem of the gear oil seepage that sets up the air vent and lead to above the main reducer casing.

Description

Semi-axle sleeve assembly, transmission system and vehicle

Technical Field

The utility model relates to the field of automotive technology, in particular to a semi-axis sleeve assembly, transmission system and vehicle.

Background

In the running process of a vehicle, because the internal gear of the main speed reducer continuously works, the oil in the gear of the main speed reducer is heated, the oil temperature is increased, the pressure in the cavity of the main speed reducer is increased, and the pressure born by the sealing element is increased. At the moment, in order to ensure that the pressure in the cavity is maintained at a certain level, relieve the pressure of a sealing piece and prevent the oil leakage phenomenon, a ventilation device is added on the main speed reducer to ensure that the oil pressure in the main speed reducer is maintained at a certain level in the driving process of the vehicle.

At present, the position of main reducer's vent hole is generally placed in the top of main reducer casing, is kept away from by the place of tooth to the vent hole generally designs into the structure of maze, prevents that fluid from rushing up the vent hole along with the gear rotation, oozes main reducer along with the breather valve, leads to the flowing oil phenomenon, and this kind of scheme leads to the casting process complicated, and main reducer's cost and weight all increase. And when the vehicle is driven at high speed, the swinging height and force of the gear oil can be increased along with the increase of the rotating speed of the gear, the impact of the oil liquid can not be counteracted by the backflow of the gear oil, so that the oil liquid is continuously ejected to the vent hole, the leakage is mainly reduced along with the seepage of the vent valve, the oil leakage problem is caused, the service life of the main speed reducer is influenced, and the complaint of customers is also caused.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a semi-axis sleeve assembly, transmission system and vehicle to solve prior art, main reducer air vent oil leak when the vehicle is gone at high speed, lead to the poor problem of main reducer durability.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this: a half shaft sleeve assembly is applied to a vehicle, and the vehicle comprises: main reducer casing, semi-axis, first bearing and sealing member, the through-hole has been seted up to the main reducer casing, the semi-axis passes through first bearing wears to locate in the through-hole, semi-axis sleeve assembly includes: a barrel and a vent valve;

the first end of the cylinder body is of an open structure, and the sealing element is arranged at the second end of the cylinder body;

the first end of the cylinder body is embedded in the through hole;

the half shaft penetrates through the cylinder body;

a vent hole is formed in the position, close to the first end, of the cylinder body, and the vent valve is detachably connected with the vent hole;

furthermore, a raised structure is arranged on the outer wall of the cylinder body, and the vent hole is formed in the raised structure;

furthermore, the inner wall of the vent hole is provided with internal threads, the vent valve is provided with external threads, and the vent hole is in threaded connection with the vent valve;

further, the vent hole faces a roof side of the vehicle;

furthermore, a limiting bulge is arranged on the outer wall of the cylinder body close to the first end, and the limiting bulge extends along the radial direction of the cylinder body;

the limiting bulge is abutted against the main speed reducer shell;

further, a flange is arranged on the outer wall of the cylinder body close to the first end, a first bolt mounting hole is formed in the flange, and the cylinder body is connected with the main speed reducer shell through the first bolt mounting hole;

further, in the above-mentioned case,

the second end of the cylinder body is sleeved on the outer ring of a second bearing of the vehicle, and the half shaft penetrates through the inner ring of the second bearing;

the sealing element is embedded in a gap between the half shaft and the barrel;

further, the half shaft sleeve assembly further comprises: the mounting support is integrally formed with the cylinder;

the mounting support is provided with a second bolt mounting hole, and the barrel is connected with a half-shaft sleeve support of the vehicle through the second bolt mounting hole.

Compared with the prior art, half axle sleeve assembly have following advantage:

half axle sleeve assembly, the semi-axis passes main reducer casing's through-hole and the first bearing in the through-hole in proper order, and then wears to locate half axle sleeve assembly's barrel, during the first end of barrel inlays the through-hole of locating main reducer casing, has seted up the air vent near barrel first end department, is provided with the breather valve with the air vent cooperation. In the vehicle driving process, the communication between the air vent arranged on the air accessible cylinder body in the main speed reducer shell and the outside air is realized, the pressure inside the shell is maintained at a certain level, and the first bearing and the half shaft can block the gear oil from the main speed reducer, so that the gear oil cannot be directly thrown into the air vent arranged on the cylinder body, the problem of leakage of the gear oil from the air vent is avoided, and the service life of the main speed reducer is prolonged.

Another object of the present invention is to provide a transmission system to ensure the durability of the vehicle transmission system.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a transmission system is applied to a vehicle and comprises the half shaft sleeve assembly.

The transmission system and the half shaft sleeve assembly have the same advantages compared with the prior art, and the detailed description is omitted.

The utility model also provides a vehicle that is provided with above-mentioned transmission system.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic structural view of a half axle sleeve assembly according to an embodiment of the present invention;

fig. 2 is a schematic structural view along a direction of fig. 1 according to an embodiment of the present invention;

fig. 3 is a cross-sectional view taken along a-a of fig. 2 according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of fig. 1 along the direction b according to the embodiment of the present invention;

FIG. 5 is a schematic view of a connecting structure between the half-axle sleeve assembly and the main reducer casing according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of fig. 5 along the direction c according to the embodiment of the present invention;

fig. 7 is a cross-sectional view taken along the direction B-B of fig. 6 according to an embodiment of the present invention.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 and 7, in order to avoid the problem that gear oil leaks from air vent 7, resulting in the poor durability of main reducer, the utility model provides a half axle sleeve assembly is applied to the vehicle, the vehicle includes: main reducer casing 1, semi-axis 2, first bearing 3 and sealing member 10, through-hole 4 has been seted up to main reducer casing 1, semi-axis 2 passes through first bearing 3 wears to locate in the through-hole 4, semi-axis sleeve assembly includes: a cylinder 5 and a vent valve 6; the first end of the cylinder 5 is of an open structure, and the sealing element 10 is arranged at the second end of the cylinder 5; the first end of the cylinder 5 is embedded in the through hole 4; the half shaft 2 penetrates through the cylinder body 5; the barrel 5 is provided with a vent hole 7 near the first end, and the vent valve 6 is detachably connected with the vent hole 7.

Referring to fig. 1 and 7, a final drive is a mechanism capable of changing torque and rotational speed in a transaxle, and basically functions to increase torque from a transmission or a universal transmission while reducing rotational speed and changing the direction of transmission of torque; the main reducer is composed of one or several pairs of reduction gear pairs, the power is input from the driving gear and output from the driven gear, besides, the main reducer also realizes the differential function of the left and right wheels or the middle and rear axle, and in order to ensure the normal work of the gears, the gaps of the gears are usually filled with gear oil. Half shaft 2 is the axle of transmission moment of torsion between main reducer and the drive wheel, and the through-hole 4 of seting up on main reducer's the casing is passed to half shaft 2's one end, stretches into main reducer's casing, with the gear spline connection among the main reducer, still is provided with first bearing 3 in through-hole 4, avoids half shaft 2 and through-hole 4's inner wall friction, supports half shaft 2 simultaneously, the outer wall and the inner wall of first bearing 3 respectively with through-hole 4 and half shaft 2 butt on the main reducer casing 1.

Half axle sleeve assembly includes barrel 5 and breather valve 6, barrel 5 is hollow tubular structure, open structure is adopted to first end, the second end is provided with sealing member 10, first end and second end are the section of linking that the barrel deviates from each other, the inside vacuole formation of barrel, half axle 2 partially wears to establish in the cavity, the first end of barrel 5 inlays to be established in main reducer casing 1's through-hole 4, in order to realize the preliminary fixed between barrel 5 and the main reducer casing 1, barrel 5 can also with connected to the frame simultaneously, the supporting frame and each assembly quality on it, avoid half axle 2 lug connection frame, support and protect half axle 2. The cylinder body 5 can be manufactured in a casting and drawing mode, the inner cavity adopts a shape following structure according to the overall outline of the half shaft 2, the casting and drawing mode is considered, the middle is thin, the two sides are thick, the distance between the minimum diameter position of the inner cavity and the half shaft 2 is larger than 5mm, the wall thickness of the cylinder body 5 is 5mm, and corresponding change can be carried out according to the bearing capacity.

At the first end department that is close to barrel 5, seted up air vent 7, air vent 7 is seted up on the outer wall of barrel 5, and the position of air vent should be as far as possible close to main reducer, and when main reducer casing internal pressure was too high, can guarantee that the gas in the main reducer casing in time reachs air vent department and is discharged through the air vent. In order to ensure the waterproofness of the barrel 5, the vent valve 6 is matched with the vent hole 7 for use, and a detachable connection mode is adopted, so that the installation and the disassembly are convenient, and the installation cost and the subsequent maintenance cost are reduced.

The embodiment of the utility model provides an in, gaseous intercommunication is realized in the clearance between accessible semi-axis 2, first bearing 3 and the through-hole 4 between main reducer casing 1 and the barrel 5, consequently, air vent 7 of seting up on main reducer casing 1 accessible barrel 5 realizes and the gaseous intercommunication in the external world, has guaranteed that main reducer casing 1 inside pressure maintains certain level, need not directly to set up air vent 7 in main reducer casing 1 top, has just also avoided seting up the problem of the gear oil seepage that air vent 7 leads to in main reducer casing 1 top. In addition, the first bearing 3 and the half shaft 2 can block gear oil from the main speed reducer, so that the gear oil cannot be directly thrown into the vent hole 7 formed in the cylinder 5, and the problem that the gear oil leaks from the vent hole 7 of the cylinder 5 is also avoided, so that the service life of the main speed reducer is prolonged, and in addition, a vent structure is directly arranged above the main speed reducer shell 1, so that the structure is complex generally, the manufacturing difficulty is high, and the light weight of the main speed reducer is not facilitated; the vent hole 7 formed in the half shaft sleeve barrel body 5 can solve the problems of ventilation and prevention of gear oil leakage without adopting a complex structure, so that the half shaft sleeve barrel has the advantages of simple structure, small mass, simple manufacture and low cost.

Optionally, the outer wall of the cylinder body is provided with a protruding structure, and the vent hole is formed in the protruding structure.

Referring to fig. 1 and 7, in order to avoid the installation of the vent valve 6 from affecting the normal operation of the half shaft 2 in the inner cavity of the cylinder 5, a protruding structure is arranged on the outer wall of the cylinder 5, the protruding structure and the outer wall of the cylinder 5 can adopt an integrally formed structure, the protruding structure is higher than the outer wall of the cylinder 5, the vent valve 7 is arranged in the protruding structure, and the vent valve 6 is installed in the protruding vent hole 7 without extending into the inner cavity of the cylinder 5. Preferably, the height of the vent holes 7 can be set to 20mm-30mm, which should not be too high, otherwise the arrangement of the peripheral parts and the strength of the parts are affected.

Optionally, the inner wall of the vent hole 7 is provided with internal threads, the vent valve 6 is provided with external threads, and the vent hole 7 is in threaded connection with the vent valve 6.

Referring to fig. 1 and 6, the vent hole 7 and the vent valve 6 are connected by threads, so that the installation and disassembly are convenient, and the installation cost and the subsequent maintenance cost are reduced. Preferably, the diameter of the vent hole 7 is generally 10mm, the length is 15mm, and the specific size can be determined according to actual requirements.

Optionally, the vent hole 7 faces a roof side of the vehicle.

Referring to fig. 6, a small amount of gear oil is also needed in the cylinder 5 as a lubricant, and due to gravity, the gear oil in the cylinder 5 tends to gather only at the bottom of the half-axle sleeve, i.e. in a direction away from the roof, so the vent hole 7 is arranged towards the roof side of the vehicle, and the gear oil in the cylinder 5 can be prevented from leaking from the vent hole 7. Meanwhile, the air vent 7 arranged in the mode has higher air inlet and outlet positions, so that water can be prevented from entering the barrel body 5 through the air vent 7 as far as possible when a vehicle wades, and the wading capacity of the vehicle is improved.

Optionally, a limiting protrusion 11 is arranged on the outer wall of the cylinder 5 near the first end, and the limiting protrusion 11 extends along the radial direction of the cylinder 5; the limiting bulge 11 is abutted to the main speed reducer shell 1.

Referring to fig. 4, barrel 5 first end portion inlays and realizes preliminary fixed in locating main reducer casing 1's through-hole 4, be close to first end department at barrel 5 and still be provided with spacing arch 11, spacing arch 11 can adopt integrated into one piece's structure with barrel 5, the intensity of connecting has been guaranteed, spacing arch 11 and main reducer casing 1 butt form spacingly to barrel 5, avoid barrel 5 to inlay the one end of establishing excessively to stretch into main reducer casing 1 in, cause the influence to the structure of casing inside.

Optionally, a flange 12 is disposed on an outer wall of the cylinder 5 near the first end, a first bolt mounting hole 1201 is formed in the flange 12, and the cylinder 5 is bolted to the main reducer casing 1 through the first bolt mounting hole 1201.

Referring to fig. 4, the cylinder 5 is provided with a flange 12 near the first end, the flange 12 and the cylinder 5 can adopt an integrated structure, the connection strength is ensured, the first bolt mounting hole 1201 is formed on the end face of the flange 12, the main reducer casing 1 is correspondingly provided with a matching structure, the first bolt mounting hole 1201 and the matching structure can be used for fixing the flange 12 and the main reducer casing 1, so that the cylinder 5 is fixed on the main reducer casing 1, the connection stability between the half-shaft sleeve and the main reducer casing 1 is improved, and meanwhile, the bolt connection mode is adopted, so that the installation and disassembly are convenient, and the installation cost and the subsequent maintenance cost are reduced.

Optionally, the second end of the cylinder 5 is sleeved on an outer ring of a second bearing 9 of the vehicle, and the half shaft 2 is inserted into an inner ring of the second bearing 9; the sealing element 10 is embedded in a gap between the half shaft 2 and the cylinder 5.

Referring to fig. 3, the half shaft 2 is inserted into the inner cavity of the cylinder 5, the second bearing 9 is arranged inside the second end of the cylinder 5, the outer ring of the second bearing 9 abuts against the inner wall of the cylinder 5, and the half shaft 2 is inserted into the second bearing 9, so that friction between the half shaft 2 and the inner wall of the cylinder 5 is avoided, and the half shaft 2 is supported. A seal 10 is also provided at the second end of the barrel 5 to prevent gear oil within the barrel 5 from leaking out of the second end of the barrel 5. Sealing member 10 can be the oil blanket, and sealing member 10 can adopt materials such as nitrile rubber, fluororubber, silicon rubber, acrylic rubber, polyurethane and polytetrafluoroethylene, the utility model discloses do not limit to this.

Optionally, the half shaft sleeve assembly further comprises: a mounting support 8 integrally formed with the cylinder 5; the mounting support 8 is provided with a second bolt mounting hole 801, and the cylinder 5 is connected with a half shaft sleeve support of the vehicle through the second bolt mounting hole 801.

Referring to fig. 1 and 2, the installation support 8 formed integrally is adopted, so that the problems that the existing split installation support is easy to rust and break and is low in strength are solved. In the semi-axis sleeve installation process, the semi-axis sleeve support on the vehicle is needed, the fixation between the semi-axis sleeve and the vehicle frame is realized, therefore, a second bolt installation hole 801 is formed in the installation support 8, one end of the semi-axis sleeve support is connected with the semi-axis sleeve through the second bolt installation hole 801 in the installation support 8, the other end of the semi-axis sleeve support is connected with the vehicle frame of the vehicle, further, the fixed installation of the semi-axis sleeve on the vehicle frame is realized, the stability of the semi-axis sleeve connection is improved, and the bearing capacity of the vehicle is ensured.

On this basis, the utility model also provides a transmission system, including foretell half axle sleeve assembly.

By adopting the transmission system of the half-shaft sleeve assembly, the main reducer shell 1 can be communicated with the outside air through the vent hole 7 formed in the barrel 5, the pressure inside the main reducer shell 1 is guaranteed to be maintained at a certain level, the vent hole 7 does not need to be directly formed above the main reducer shell 1, and the problem of gear oil leakage caused by the vent hole 7 formed above the main reducer shell 1 is also solved. In addition, the first bearing 3 and the half shaft 2 can block gear oil from the main speed reducer, so that the gear oil cannot be directly thrown into the vent hole 7 formed in the cylinder 5, and the problem that the gear oil leaks from the vent hole 7 of the cylinder 5 is also avoided, so that the service life of the main speed reducer is prolonged, and the overall stability of a transmission system is improved.

On this basis, the utility model also provides a vehicle, including foretell transmission system.

In the vehicle with the transmission system, the main reducer casing 1 can be communicated with the outside air through the vent hole 7 formed in the cylinder 5, so that the pressure inside the main reducer casing 1 is maintained at a certain level, the vent hole 7 does not need to be directly formed above the main reducer casing 1, and the problem of gear oil leakage caused by the vent hole 7 formed above the main reducer casing 1 is avoided. And, first bearing 3 and semi-axis 2 can block the gear oil that comes from the main reducer in, make it can't directly get rid of to the air vent 7 of seting up on the barrel 5 in, the problem of the seepage in the air vent 7 of also having avoided gear oil from the barrel 5 has been avoided, thereby main reducer's life has been promoted, the holistic stability of transmission system has been promoted, the durability of whole car has been promoted, in addition, the air vent 7 of seting up on semi-axis sleeve barrel 5, compare in the air vent 7 of main reducer casing 1 top, still have simple structure, the quality is little, the advantage that the cost of manufacture is low, the manufacturing cost of vehicle has further been reduced.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A half shaft sleeve assembly is applied to a vehicle, and the vehicle comprises: main reducer casing, semi-axis, first bearing and sealing member, the through-hole has been seted up to the main reducer casing, the semi-axis passes through first bearing wears to locate in the through-hole, its characterized in that, semi-axis sleeve assembly includes: a barrel and a vent valve;

the first end of the cylinder body is of an open structure, and the sealing element is arranged at the second end of the cylinder body;

the first end of the cylinder body is embedded in the through hole;

the half shaft penetrates through the cylinder body;

the barrel is provided with a vent hole close to the first end, and the vent valve is detachably connected with the vent hole.

2. The half shaft sleeve assembly according to claim 1, wherein the outer wall of the sleeve body is provided with a protruding structure, and the vent hole is formed in the protruding structure.

3. The half shaft sleeve assembly according to claim 2, wherein said vent hole is internally threaded and said vent valve is externally threaded, said vent hole being threadedly connected to said vent valve.

4. The half sleeve barrel assembly according to claim 3, wherein said vent hole is directed toward a roof side of said vehicle.

5. The half shaft sleeve assembly according to claim 1, wherein a limiting protrusion is arranged on the outer wall of the cylinder body near the first end, and the limiting protrusion extends along the radial direction of the cylinder body;

the limiting protrusion is abutted to the main speed reducer shell.

6. The half shaft sleeve assembly according to claim 5, wherein a flange is disposed on an outer wall of the cylinder body near the first end, a first bolt mounting hole is formed in the flange, and the cylinder body is bolted to the main speed reducer casing through the first bolt mounting hole.

7. The half shaft sleeve assembly of claim 1,

the second end of the cylinder body is sleeved on the outer ring of a second bearing of the vehicle, and the half shaft penetrates through the inner ring of the second bearing;

the sealing element is embedded in a gap between the half shaft and the barrel.

8. The half shaft sleeve assembly of claim 1 further comprising: the mounting support is integrally formed with the cylinder;

the mounting support is provided with a second bolt mounting hole, and the barrel is connected with a half-shaft sleeve support of the vehicle through the second bolt mounting hole.

9. A transmission system for a vehicle, comprising: the half boss cartridge assembly of any of claims 1 to 8.

10. A vehicle, characterized in that the vehicle comprises: a transmission system as claimed in claim 9.

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