CN208664817U - Hub unit - Google Patents
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- CN208664817U CN208664817U CN201820840041.5U CN201820840041U CN208664817U CN 208664817 U CN208664817 U CN 208664817U CN 201820840041 U CN201820840041 U CN 201820840041U CN 208664817 U CN208664817 U CN 208664817U
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- hub
- knuckle
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- 125000006850 spacer group Chemical group 0.000 claims abstract description 36
- 230000002093 peripheral effect Effects 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims description 34
- 238000009423 ventilation Methods 0.000 claims description 32
- 230000000903 blocking effect Effects 0.000 claims description 29
- 238000000926 separation method Methods 0.000 claims description 28
- 210000004907 gland Anatomy 0.000 claims description 25
- 238000009434 installation Methods 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 10
- 244000144985 peep Species 0.000 claims description 5
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 206010003497 Asphyxia Diseases 0.000 description 3
- 210000001015 abdomen Anatomy 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 210000000003 hoof Anatomy 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
A kind of hub unit disclosed by the utility model, hub unit is rotatablely installed on knuckle or vehicle central siphon, the first end and the second end of hub body offer first bearing room and second bearing room respectively, in first bearing room and first bearing and second bearing are respectively equipped in second bearing room, the outer peripheral surface of knuckle or vehicle central siphon distinguishes the inner ring clearance fit of two bearings, and the outer ring of two bearings and hub body are interference fitted；Plastic deformation spacer is provided in hub body, it is plastically deformed the stairstepping tubular structure that spacer is uniform wall thickness, rounding off between the ladder of tubular structure, the bigger diameter end of spacer is plastically deformed against the inner ring end face of second bearing, is plastically deformed inner ring end face of the miner diameter end against first bearing of spacer.The utility model can prevent two bearing inner races axial float on knuckle or vehicle central siphon, so that bearing clearance is in zone of reasonableness always, improve the service life of hub unit, reduce manufacturing cost.
Description
Technical field
The utility model belongs to technical field of automobile parts, and in particular to a kind of hub unit.
Background technique
Truck vehicle maintenance frequency currently on the market is higher, and ten thousand kilometers of every 3-5 just needs maintenance primary, maintenance frequency
Higher, vehicle dwell time is long, causes larger economic pressures to car owner.With the development of auto manufacturing, to wheel end product
It is required that also higher and higher, current numerous host producers propose 500,000 kilometers of non-maintaining targets, it is therefore an objective to it reduces and uses Che Chengben, because
This must meet client and the market demand from products innovation, Curve guide impeller etc..
The service life for taking turns end can be improved in bearing working clearance appropriate to automobile in the process of moving, and conventional wheel end is to bearing
The adjustment mode of clearance is usually first to reach specified pretightning force with axis head nut locking, then again manually by axis head nut rollback 1/
Circle.The adjustment mode complex process of such bearing clearance, it is complex for operation step, it is easy to appear manual operation error, bearing
Clearance precision is difficult to ensure, reduces bearing service life, so as to shorten the service life of hub assembly.In addition, existing axis
Hold with knuckle or vehicle central siphon interference fit, in the case where road conditions are relatively severe, bearing roller usually can not by asphyxia by external pressure on the chest and abdomen
It is normal to roll, or even bearing outer ring can be made to rotate, cause bearing chamber to wear, bearing and wheel hub fail；And bearing and knuckle
Or vehicle central siphon interference fit, client need to spend very big strength that hub assembly is attached to knuckle or vehicle during the installation process
Difficult to install on central siphon, installation cost is high, while will also result in terms of vehicle maintenance difficult in maintenance, and maintenance cost is high
Problem.
Rigid spacer is arranged in some commercial vehicles between the two bearings of hub unit, is generated using high-precision rigid spacer
Small elastic deformation achievees the purpose that adjust hub unit bearing clearance, thus must be strictly controlled size in process
Chain tolerance, processing and manufacturing is at high cost, needs to carry out hub unit one-to-one measurement apolegamy in terms of Product Assembly, and process is numerous
Miscellaneous, assembly cost is high.And vehicle operation in hub unit absorb impact load, with runing time increase two bearings and rigidity every
Set can generate abrasion, and when reaching certain degree of wear, rigid spacer just loses the effect for adjusting bearing clearance, shorten wheel hub list
The service life of member.
Utility model content
To overcome above-mentioned the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a kind of wheel hub lists
Member can not only prevent two bearing inner races axial float on knuckle or vehicle central siphon, so that bearing clearance is in always
In zone of reasonableness, the service life of hub unit is improved, and the accuracy of manufacture of corresponding components can be reduced, reduces manufacture
Cost.
In order to solve the above technical problems, the utility model uses following technical scheme:
A kind of hub unit, the hub unit rotational installation is on knuckle or vehicle central siphon, comprising: hub body,
The hub body has first end and the second end, and the first end offers first bearing room, the second end
Second bearing room is offered, first bearing is equipped in the first bearing room, is provided with second bearing in the second bearing room,
The outer peripheral surface of the second end is installed with ABS gear ring, and the inner peripheral surface of the second end is installed with oil sealing；The knuckle or
The outer peripheral surface of the vehicle central siphon inner ring clearance fit with the first bearing and second bearing respectively, the first bearing and
The outer ring of the second bearing is interference fitted with the hub body respectively；Be provided in the hub body plastic deformation every
It covers, the stairstepping tubular structure for being plastically deformed spacer and being set as uniform wall thickness, it is round and smooth between the ladder of the tubular structure
Transition, the bigger diameter end of the plastic deformation spacer are described to be plastically deformed the small of spacer against the inner ring end face of the second bearing
Diameter end is against the inner ring end face of the first bearing.
Preferably, the knuckle or the axle for vehicle pipe screw thread are connected with axis head nut, the first bearing with it is described
Wear-resistant gasket is provided between axis head nut.
Preferably, in the knuckle, the endface of the first end is installed with row for the hub unit rotational installation
Gas end cap, the exhaust end cover include end cap ontology, oil level observation lid, the ventilation blocking of elasticity and gland, the end cap ontology
Peripheral wall on be provided with oil filler point, one end of the end cap ontology offers peep hole, and the oil level observation lid is set to described
At peep hole, the oil level observation is covered with the basin body protruded inwardly, and recess, the ventilation are provided on the inside of the gland
Plug for seal is connected between the basin body and the recess of the gland, and the gland is fixedly connected with the end cap ontology；Institute
It states and forms the first Oil-gas Separation chamber between ventilation blocking and the basin body, the ventilation blocking is internally provided with the second oil gas point
From chamber, third Oil-gas Separation chamber is formed between the ventilation blocking and the gland, is offered on the side wall of the basin body
First venthole, first venthole is connected to the inner cavity of the first Oil-gas Separation chamber and the hub unit, described logical
The side wall of gas blocking offers the second venthole, and second venthole is connected to the second Oil-gas Separation chamber and described first
Oil-gas Separation chamber, the ventilation blocking offer central air vents, and the central air vents are connected to second Oil-gas Separation
Chamber and the third Oil-gas Separation chamber are provided with logical between the end face of the ventilation blocking and the end face of gland recess
The outer peripheral surface of air flue, the ventilation blocking is provided with the sealing wing of annular, the inner peripheral surface of the sealing wing and gland recess
It mutually reclines, the sealing wing described in the gas urges excluded via the air passage makes the inner circumferential of the sealing wing and gland recess
Exhaust gap is formed between face.
Preferably, the oil level observation lid uses transparent material.
Preferably, the oil level observation covers the oil level warning groove being equipped in concentric circles arrangement.
Preferably, the end face of the ventilation blocking is provided with the bulge loop of several arranged concentrics, the bulge loop and the pressure
The end face of lid recess mutually reclines to form the air passage of arranged concentric, and the bulge loop disconnects setting, the gap of the bulge loop
Two air passage connections inside and outside will be adjacent.
Preferably, the oil filler point is threadedly coupled the screw plug that is magnetic.
Preferably, the hub body is equipped with connecting flange, and the connecting flange offers the bolt of installation tire bolt
Tire bolt block machine is arranged on the side of the connecting flange in hole and disassembly bottom outlet for dismantling brake-shoe.
Preferably, annular knurl, the head chamfered edge of the tire bolt are provided on the shank of bolt of the tire bolt.
After above-mentioned technical proposal, the beneficial effects of the utility model are:
It is equipped with plastic deformation spacer between first bearing and second bearing, is plastically deformed spacer in the assembly of hub unit
Plastic deformation is generated by pressure to shorten, is there is rebound amount after pressure is cancelled, and hub unit is being mounted on knuckle or vehicle
On central siphon, after locking axis head nut by the tightening torque of setting, above-mentioned rebound amount can be offset, at this point, be plastically deformed every
The both ends difference tight abutment of set is plastically deformed spacer by bullet in the inner ring end face of first bearing and the inner ring end face of second bearing
Property be clamped between two bearings end face, it is ensured that plastic deformation spacer play its positioning action, prevent two bearing inner races from turning to
Axial float on section or vehicle central siphon, within the scope of making bearing clearance be in reasonable always.And it also reduces to corresponding zero
The requirement of the accuracy of manufacture of component simplifies assembler's amount in assembly without matching one by one to assembly parts, save the time and at
This.
When assembling hub unit due to producer, the bearing clearance that will test qualified hub unit is arranged in zone of reasonableness
It is interior, it, only need to be by axis head nut by the fastening of setting when qualified hub unit is mounted on knuckle or vehicle central siphon by client
Torque is tightened, and reasonable bearing clearance value can be reached by being not required to rollback 1/6-1/8 circle.
The outer peripheral surface of the knuckle or vehicle central siphon inner ring clearance fit with first bearing and second bearing respectively, wheel hub list
Member is simple to operate when being installed on knuckle or vehicle central siphon, and bearing inner race is matched with knuckle or vehicle central siphon gap
Conjunction can effectively improve bearing service life, avoid hub unit bearing roller when absorbing impact load that from can not normally being rolled by asphyxia by external pressure on the chest and abdomen
Dynamic, bearing inner race can be relatively rotated with knuckle, alleviate shock loading suffered by raceway significantly, prevent shock loading mistake
Bearing outer ring is caused to rotate greatly, so that the room that runs out bearing, leads to hub body premature failure.
In the wheel end of dead axle, to prevent oil liquid from releasing from hub end, generally pacify in hub unit end face outside
Closed end cap is filled, thus is closed environment inside the wheel end of dead axle, with the traveling of vehicle, hub unit internal temperature
It can gradually rise, inner air expanded by heating, hub inner lumen pressure increases, and the lip seal that excessive pressure will lead to oil sealing loses
Effect, may bloat oil sealing when serious, hub unit oil leak is caused to be failed.Traditional end cap is substituted for exhaust by the utility model
End cap can not only play the role of preventing oil liquid from leaking, moreover it is possible to will take turns the air in end in time and be discharged, prevent oil sealing because of pressure mistake
Lead to seal failure greatly, to extend the service life of hub unit.
Detailed description of the invention
Fig. 1 is the positive structure diagram of 1 hub unit of the utility model embodiment；
Fig. 2 is the schematic cross-sectional view in Fig. 1 at hub unit A-A；
Fig. 3 is the plastic deformation spacer longitudinal sectional view of the utility model hub unit；
Fig. 4 is the positive structure diagram of the exhaust end cover of 1 hub unit of the utility model embodiment；
Fig. 5 is schematic cross-sectional view of the Fig. 4 at B-B；
Fig. 6 is the vertical view enlarged diagram of blocking of ventilating in 1 hub unit of the utility model embodiment；
Fig. 7 is the vertical profile structural schematic diagram that 2 hub unit of the utility model embodiment is installed on vehicle central siphon.
In figure: 1- hub body, 2- first bearing, 3- second bearing, 4- plastic deformation spacer, 42- miner diameter end, 43- are big
Diameter end, 5-ABS gear ring, 6- oil sealing, 7- exhaust end cover, 8- axis head nut, 9- wear-resistant gasket, 10- tire bolt, 11- knuckle,
12- connecting flange, 13- oil sealing seat ring, 14- vehicle central siphon, 121- dismantle bottom outlet, 71- end cap ontology, and the observation of 72- oil level is covered,
73- ventilation blocking, 74- gland, 75- oil filler point, 76- magnetism screw plug, the first venthole of 721-, the second venthole of 731-, 732-
Central air vents, 722- the first Oil-gas Separation chamber, 733- the second Oil-gas Separation chamber, 734- air passage.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and examples.
Embodiment 1:
Hub unit as depicted in figs. 1 and 2, on knuckle 11, hub body 1 has for hub unit rotational installation
One end and the second end, first end offers first bearing room, and the endface of first end is installed with exhaust end cover 7,
The second end offers second bearing room, is equipped with first bearing 2 in first bearing room, second bearing is provided with second bearing in room
3, the outer peripheral surface of the second end is installed with ABS gear ring 5, and the inner peripheral surface of the second end is installed with oil sealing 6.
The outer peripheral surface of the knuckle 11 inner ring clearance fit with first bearing 2 and second bearing 3 respectively, 2 He of first bearing
The outer ring of second bearing 3 is interference fitted with hub body 1 respectively；Plastic deformation spacer 4 is provided in hub body 1, such as Fig. 3 institute
Show, plastic deformation spacer 4 is set as the stairstepping tubular structure of uniform wall thickness, rounding off between the ladder of tubular structure, modeling
Property deformation spacer 4 bigger diameter end 43 against second bearing 3 inner ring, be plastically deformed spacer 4 miner diameter end 42 against first bearing 2
Inner ring.The effect for being plastically deformed spacer 4 is the inner ring for the inner ring and second bearing 3 for preventing first bearing 2 on knuckle 11
Axial float.
The outer peripheral surface of the knuckle 11 inner ring clearance fit with first bearing 2 and second bearing 3 respectively, so that hub unit
It assembles simple and convenient when being installed on knuckle 11, and bearing service life can be effectively improved, hub unit is avoided to bear
Bearing roller can not be rolled normally by asphyxia by external pressure on the chest and abdomen when shock loading, and bearing inner race and knuckle 11 relatively rotate, and alleviate axis significantly
Shock loading suffered by raceway is held, prevents shock loading is excessive from bearing outer ring being caused to rotate, so that the room that runs out bearing, leads to wheel hub
1 premature failure of ontology.
After hub unit is mounted on knuckle 11, it is equipped in the outside of first bearing 2 and connects with 11 screw thread of knuckle
The axis head nut 8 connect, the wearability of axis head nut 8 is poor, and the wearability of bearing is high, if axis head nut 8 and first bearing 2 are straight
Contact, axis head nut 8 can generate a certain amount of abrasion because of trackslipping for bearing inner race, as time of vehicle operation increases, then
8 abrasion loss of axis head nut is larger, will lead to bearing clearance and becomes larger, and the variable quantity of bearing clearance is excessive to will have a direct impact on hub unit
Service life, it is therefore desirable between axis head nut 8 and first bearing 2 plus wear-resistant gasket 9, wear-resistant gasket 9 is by wear-resistant material
It is made.
As shown in Figure 4 and Figure 5, exhaust end cover 7 includes: end cap ontology 71, oil level observation lid 72, ventilation blocking 73 and gland
74, oil filler point 75 is provided on the peripheral wall of end cap ontology, oil filler point 75 is preferably arranged to threaded hole, and is arranged at oil filler point
Magnetic screw plug 76, one end of end cap ontology 71 offer peep hole, and oil level observation lid 72 is set at peep hole, oil level observation lid
72 are equipped with the basin body that protrudes inwardly, and the inside of gland 74 is provided with recess, ventilation blocking 73 be sealedly attached to the basin body and
Between the recess of gland 72, gland 72 is fixedly connected with end cap ontology 71；First is formed between ventilation blocking 73 and the basin body
Oil-gas Separation chamber 722, ventilation blocking 73 are internally provided with the second Oil-gas Separation chamber 733, ventilation blocking 73 and gland 74 it
Between form third Oil-gas Separation chamber, the first venthole 721, the connection of the first venthole 721 are offered on the side wall of the basin body
The inner cavity of first Oil-gas Separation chamber 722 and hub unit, the side wall of ventilation blocking 73 offer the second venthole 731, and second
Venthole 731 is connected to the second Oil-gas Separation chamber 733 and the first Oil-gas Separation chamber 722, and it is logical that ventilation blocking 73 offers center
Stomata 732, central air vents 732 are connected to the second Oil-gas Separation chamber 733 and third Oil-gas Separation chamber, the end of ventilation blocking 73
Air passage 734 is provided between the end face that face and gland 74 are recessed, the outer peripheral surface of ventilation blocking 73 is provided with the sealing wing of annular,
The inner peripheral surface that the sealing wing is recessed with gland 74 mutually reclines, and the sealing wing described in the gas urges excluded via air passage 734 makes
Exhaust gap is formed between the inner peripheral surface that the sealing wing and the gland 74 are recessed.
In the wheel end of dead axle, to prevent oil liquid from releasing from wheel hub outer end, generally pacify in hub unit end face outside
Closed end cap is filled, thus is closed environment inside the wheel end of dead axle, with the traveling of vehicle, hub unit internal temperature
It can gradually rise, inner air expanded by heating, hub inner lumen pressure increases, and the lip seal that excessive pressure will lead to oil sealing loses
Effect, may bloat oil sealing when serious, hub assembly oil leak is caused to be failed.Traditional end cap is substituted for exhaust end cover 7, works as wheel
Hub unit internal temperature gradually rises, and when the chamber pressure of hub unit increases, internal gas is multiple by exhaust end cover
First venthole 721, multiple second ventholes 731 and single central air vents 732 are discharged, although when the first ventilation of air discharge
A small amount of oil gas can be taken when hole 721 out of, but be largely delayed at by the oil gas in air when the first Oil-gas Separation chamber 722
In first Oil-gas Separation chamber 722, the subsequent oil that will further take out of of the second Oil-gas Separation chamber 733 again through ventilation blocking 73
Gas major part detention finally contains minimal amount of oil gas or even not oily from the air that central air vents 732 are discharged.Even if containing
There is a small amount of oil gas, accumulates minimal amount of oil droplet with time of vehicle operation growth, third Oil-gas Separation chamber stores above-mentioned remittance
Integrated minimal amount of oil droplet, and air is discharged along air passage 734 and oppresses the sealing wing, makes the sealing wing and the pressure
Exhaust gap is formed between the inner peripheral surface that lid 74 is recessed, finally by gas into outside air.
As shown in fig. 6, the end face of ventilation blocking is preferably arranged to the bulge loop of several arranged concentrics by the utility model, it is convex
The end face that ring is recessed with gland 74 mutually reclines to form the air passage 734 of arranged concentric, and bulge loop disconnects setting, and the gap of bulge loop will
Adjacent inside and outside two air passages 734 connection.Exhaust end cover 7 can not only play the role of preventing oil liquid from leaking, moreover it is possible in time will
The air discharge in end is taken turns, prevents oil sealing from leading to seal failure because pressure is excessive, so that the service life of hub unit is extended,
In addition exhaust end cover 7, which also acts as, prevents muddy water from entering the effect inside hub unit.
Hub unit can generate the iron filings of a part in the operation period of adjustment, these iron filings belong in wheel hub operational process
Objectionable impurities, if impurity entrance will be greatly reduced bearing life in bearing operational process, while impurity can also damage oil sealing
Lip causes hub unit oil leak to be failed.Magnetic screw plug 76 can will adjustment generate iron adsorption, avoid iron filings influence bearing,
The service performance of oil sealing.
Oil level in hub unit in order to facilitate observation of, oil level observes lid 72 and uses transparent material, and observes lid 72 in oil level
It is equipped with and warns groove in the oil level of concentric circles arrangement, warning groove includes minimum oil level line and highest oil level line, when wheel hub list
When oil level in member is lower than minimum oil level line, the oiling into hub unit is needed, but the total amount of oiling is no more than highest oil level
Line.
Hub body 1 is equipped with connecting flange 12, offer on connecting flange 12 installation tire bolt 10 bolt hole and
For dismantling the disassembly bottom outlet 121 of brake-shoe, tire bolt block machine is set on the side of connecting flange 12.It takes turns end and replaces brake block
When, it needs to remove brake-shoe, and wheel hub is in the outside of brake-shoe, it usually needs braking can just be removed by first removing hub unit
Hoof, not only vehicle maintenance expense is high for this mode, but also repeatedly repeated disassembled and assembled hub unit will cause the oil sealing in hub unit
Lip is scratched, abrasion, is even destroyed, and being dismounted for multiple times oil sealing also results in bias, the oil sealing service life is reduced, so as to shorten hub unit
Service life.After opening up disassembly bottom outlet 121 on the connecting flange 12 of wheel hub, so that it may directly will by disassembly bottom outlet 121
The fixed pin of brake removes, to remove brake-shoe.Such disassembly mode can substantially reduce vehicle maintenance cost, guarantee simultaneously
The consistency of hub unit running environment, improves the sealing performance of hub unit.
As shown in Fig. 2, the reliability of wheel end assembly connection is improved, in connecting flange 12 to prevent tire bolt 10 from rotating
Side on tire bolt block machine is set, and by the head bolt chamfered edge of tire spiral shell, in addition, by being set on the shank of bolt of tire bolt 10
Annular knurl is set, increases the tire bolt hole on connecting flange and the magnitude of interference of tire bolt 10, bolt is further prevented to rotate.
Above-mentioned hub unit can be assembled by following steps and be completed:
A, with press machine by the outer ring of the outer ring of first bearing 2 and second bearing 3 be respectively pressed into the first bearing room and
The second bearing room and being affixed with corresponding bearing block machine is leaned on；
B, by the inner ring of second bearing 3 and roller, (tapered roller bearing internal ring and roller that the utility model uses are one
Body formula) it is put into the outer ring of corresponding second bearing 3, then oil sealing 6 is pressed into the inner peripheral surface of the second end with press machine,
ABS gear ring 5 is pressed into the outer peripheral surface of the second end again；
C, hub body 1 is overturn, plastic deformation spacer 4 is put into hub body 1, makes bigger diameter end 43 against second bearing
The inner ring of first bearing 2 and roller are put into the outer ring of corresponding first bearing 2 by 3 inner ring end face；
D, the inner ring of second bearing 3 is supported on supporting parts to (here, supporting parts are equivalent to interim universal joint, by
The inner ring axial limiting of two bearings 3), then applying pressure T1 to the inner ring outer end face of first bearing 2 with press machine becomes plasticity
Shape spacer 4 generates plastic deformation, and the pressure of press machine is then decreased to pressure T2, and the initial rotation for detecting hub unit is turned round
Square, when initial driving torque is within setting range value, product is qualified, the setting range and wheel hub list of initial rotation torque
The setting range of the bearing clearance of member matches, i.e., if initial moment detection is qualified, the bearing clearance of hub unit also exists
In the value range of setting.
Above-mentioned hub unit is installed on knuckle 11, including following installation steps:
Qualified hub unit set is attached on knuckle 11, the step end face on knuckle 11 is made to recline second bearing 3
Inner ring, then by wear-resistant gasket 9 and axis head nut 8 rotation set to knuckle 11, and axis head nut 8 is threaded to the fastening of setting
Torque, the axial compressive force that the tightening torque of setting generates are corresponding with pressure T2.Taking turns the remaining part in end, routinely step is pacified
Dress, details are not described herein.
In D step, hub unit can remove pressure T2 after detection is qualified, and plastic deformation spacer 4 can rebound the change of X
Shape amount (certainly, will not restore to the original state), thus after hub unit is installed on knuckle 11 by the later period, according to the tight of setting
Gu torque tightens axis head nut 8 and just can offset rebound amount X, so that after hub unit is installed on knuckle 11, at this point,
Plastic deformation spacer 4 is by resilient clamp between first bearing 2 and two inner rings of second bearing 3, it is ensured that plastic deformation spacer 4
Its positioning action is played, within the scope of so that bearing clearance is in reasonable.Due to being plastically deformed the These characteristics of spacer 4, adding
Bearing block machine, bearing and the accuracy of manufacture requirement for being plastically deformed spacer 4 of hub bearing room can be suitably reduced in work, and are filled
With in the process without carrying out one-to-one measurement apolegamy, reduction manufacturing cost.
Embodiment 2:
It is the structural schematic diagram that 2 hub unit of the utility model embodiment is installed on vehicle central siphon as shown in Figure 7, implements
Example 2 difference from example 1 is that:
The hub unit of the present embodiment is mounted on drive axle, hub unit rotational installation on vehicle central siphon 14, and
The end face of first end does not set exhaust end cover 7.
Oil filler point is provided on the peripheral wall of the hub inner lumen between first bearing room and second bearing room, and oil filler point screw thread connects
It is connected to magnetic screw plug 76.
In the installation step of hub unit, the supporting parts in D step are equivalent to oil sealing seat ring 13, and effect is by the second axis
Hold 3 inner ring axial limiting.
Above-mentioned hub unit is installed on vehicle central siphon 14, including following installation steps:
Oil sealing seat ring 13 is first pressed on vehicle central siphon 14, qualified hub unit set is then attached to axle for vehicle pipe 14
On, so that the end face of oil sealing seat ring 13 is reclined the inner ring of second bearing 3, then by wear-resistant gasket 9 and 8 rotation set of axis head nut to vehicle
On central siphon 14, and axis head nut 8 is threaded to the tightening torque of setting, the axial compressive force and pressure T2 that the tightening torque of setting generates
It is corresponding.
In the utility model, size, the material etc. of the pressure T1 and plastic deformations spacer 4 that apply to plastic deformation spacer 4
Performance parameter is related, and must assure that makes to be plastically deformed under the premise of not damaging bearing spacer 4 generates plasticity first
Deformation.The pressure T2 applied to plastic deformation spacer 4 is corresponding with the axial compressive force that the tightening torque of setting generates, and fastens and turn round
Square is determined according to the service load of wheel hub and preset bearing clearance.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (9)
1. a kind of hub unit, the hub unit rotational installation is on knuckle or vehicle central siphon, comprising:
Hub body, the hub body have first end and the second end, and the first end offers first bearing room,
The second end offers second bearing room, and first bearing is equipped in the first bearing room, is set in the second bearing room
It is equipped with second bearing, the outer peripheral surface of the second end is installed with ABS gear ring, and the inner peripheral surface of the second end is installed with oil
Envelope；It is characterized in that,
Interior ring gap of the outer peripheral surface of the knuckle or the vehicle central siphon respectively with the first bearing and second bearing is matched
It closes, the outer ring of the first bearing and the second bearing is interference fitted with the hub body respectively；
Plastic deformation spacer is provided in the hub body, the plastic deformation spacer is set as the stairstepping cylinder of uniform wall thickness
Shape structure, rounding off between the ladder of the tubular structure, the bigger diameter end of the plastic deformation spacer is against second axis
The inner ring end face held, the miner diameter end of the plastic deformation spacer is against the inner ring end face of the first bearing.
2. hub unit as described in claim 1, which is characterized in that the knuckle or the axle for vehicle pipe screw thread are connected with
Axis head nut is provided with wear-resistant gasket between the first bearing and the axis head nut.
3. hub unit as described in claim 1, which is characterized in that the hub unit is rotatablely installed in the knuckle,
The endface of the first end is installed with exhaust end cover, and the exhaust end cover includes end cap ontology, oil level observation lid, elasticity
Ventilation blocks and gland, is provided with oil filler point on the peripheral wall of the end cap ontology, one end of the end cap ontology offers observation
Hole, the oil level observation lid are set at the peep hole, and the oil level observation is covered with the basin body protruded inwardly, the pressure
Recess is provided on the inside of lid, the ventilation plug for seal is connected between the basin body and the recess of the gland, the pressure
Lid is fixedly connected with the end cap ontology；
The first Oil-gas Separation chamber is formed between the ventilation blocking and the basin body, the ventilation blocking is internally provided with second
Oil-gas Separation chamber, the ventilation block and form third Oil-gas Separation chamber between the gland, on the side wall of the basin body
The first venthole is offered, first venthole is connected to the inner cavity of the first Oil-gas Separation chamber and the hub unit,
The side wall of the ventilation blocking offers the second venthole, and second venthole is connected to the second Oil-gas Separation chamber and institute
The first Oil-gas Separation chamber is stated, the ventilation blocking offers central air vents, central air vents connection second oil
Gas split cavity and the third Oil-gas Separation chamber are set between the end face of the ventilation blocking and the end face of gland recess
It is equipped with air passage, the outer peripheral surface of the ventilation blocking is provided with the sealing wing of annular, the sealing wing and gland recess
Inner peripheral surface mutually reclines, and the sealing wing described in the gas urges excluded via the air passage makes the sealing wing and the gland be recessed
Inner peripheral surface between form exhaust gap.
4. hub unit as claimed in claim 3, which is characterized in that the oil level observation lid uses transparent material.
5. hub unit as claimed in claim 3, which is characterized in that the oil level observation, which covers, to be equipped in concentric circles arrangement
Oil level warns groove.
6. hub unit as claimed in claim 3, which is characterized in that the end face of the ventilation blocking is provided with several with one heart
The bulge loop of arrangement, the bulge loop mutually reclines to form the air passage of arranged concentric with the end face that the gland is recessed, described convex
Ring disconnects setting, the gap of the bulge loop will be adjacent inside and outside two air passages connections.
7. hub unit as claimed in claim 3, which is characterized in that the oil filler point is threadedly coupled the screw plug that is magnetic.
8. hub unit as described in claim 1, which is characterized in that the hub body is equipped with connecting flange, the connection
The bolt hole and disassembly bottom outlet for dismantling brake-shoe that flange offers installation tire bolt, on the side of the connecting flange
Tire bolt block machine is set.
9. hub unit as claimed in claim 8, which is characterized in that it is provided with annular knurl on the shank of bolt of the tire bolt,
The head chamfered edge of the tire bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820840041.5U CN208664817U (en) | 2018-05-31 | 2018-05-31 | Hub unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820840041.5U CN208664817U (en) | 2018-05-31 | 2018-05-31 | Hub unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208664817U true CN208664817U (en) | 2019-03-29 |
Family
ID=65824001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820840041.5U Active CN208664817U (en) | 2018-05-31 | 2018-05-31 | Hub unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208664817U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944260A (en) * | 2018-05-31 | 2018-12-07 | 山东浩信机械有限公司 | Hub unit and its assembly installation method |
| CN110561976A (en) * | 2019-08-21 | 2019-12-13 | 华中科技大学 | novel waterproof high-strength hub structure |
| CN112172409A (en) * | 2020-10-15 | 2021-01-05 | 安徽固迈汽车零部件有限公司 | Commercial vehicle hub assembly with same service life as vehicle body |
-
2018
- 2018-05-31 CN CN201820840041.5U patent/CN208664817U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944260A (en) * | 2018-05-31 | 2018-12-07 | 山东浩信机械有限公司 | Hub unit and its assembly installation method |
| CN108944260B (en) * | 2018-05-31 | 2024-05-24 | 山东浩信机械有限公司 | Hub unit and assembly and installation method thereof |
| CN110561976A (en) * | 2019-08-21 | 2019-12-13 | 华中科技大学 | novel waterproof high-strength hub structure |
| CN110561976B (en) * | 2019-08-21 | 2020-12-08 | 华中科技大学 | Novel waterproof high-strength hub structure |
| CN112172409A (en) * | 2020-10-15 | 2021-01-05 | 安徽固迈汽车零部件有限公司 | Commercial vehicle hub assembly with same service life as vehicle body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 261307 south head of Weizi Town, Changyi City, Weifang City, Shandong Province Patentee after: Shandong Haoxin Machinery Co.,Ltd. Country or region after: China Address before: 261307 Hao Xin Industrial Park, Weizi Town, Changyi City, Weifang, Shandong Patentee before: SHANDONG HAOXIN MACHINERY Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |