CN109780179A - A kind of commercial vehicle main cone bearing pre-tightening structure and its Method of Adjustment - Google Patents
A kind of commercial vehicle main cone bearing pre-tightening structure and its Method of Adjustment Download PDFInfo
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- CN109780179A CN109780179A CN201910013606.1A CN201910013606A CN109780179A CN 109780179 A CN109780179 A CN 109780179A CN 201910013606 A CN201910013606 A CN 201910013606A CN 109780179 A CN109780179 A CN 109780179A
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Abstract
The present invention provides a kind of commercial vehicle main cone bearing pre-tightening structure and its Method of Adjustment, the pre-pressing structure and its Method of Adjustment are on the basis of existing Pinion gear assembly, it is set to generate irreversible plastic deformation using the distinctive mechanical characteristic of waveform spacer, make flange nut, flange assembly, main cone little-end bearing inner ring roller assembly, waveform spacer, it is whole that main cone big-end bearing inner ring roller assembly forms a rigidity, to eliminate bearing, the parts such as bearing block are due to manufacture, assemble bring scale error, main cone bearing pre-fastening is set to reach specified value, to effectively prevent original pretightning force adjustment gasket optional cumbersome technique repeatedly, reach and has improved productive temp under the premise of meeting service performance, guarantee product quality, reduce the purpose of operator's labor intensity.
Description
Technical field
The invention belongs to auto parts and components mounting technique fields, and in particular to a kind of commercial vehicle main cone bearing pre-tightening structure and
Its Method of Adjustment.
Background technique
What commercial vehicle main reducing gear main cone bearing generallyd use currently on the market is a pair of anti-taper roller filled back-to-back
Bearing, during guaranteeing the service life of bearing, the running accuracy of raising bearing rigidity and bearing, reducing bearing operation
Noise and vibration can apply a pretightning force to main cone bearing in advance, make bearing during assembling main reducing gear Pinion gear assembly
Rolling element and Internal and external cycle generate certain preload deformation and eliminate bearing clearance to keep bearing Internal and external cycle to be in impaction state.
If pretightning force is too small, there is gap between the inside and outside circle of tapered roller bearing, the rigidity of support of drive bevel gear can be reduced, caused
Main pinion holds axial transmission, influences main by tooth engagement, or even beats tooth；If pretightning force is excessive, transmission efficiency can be reduced, bearing is caused
Fever accelerates bearing wear, or even bearing is made to generate ablation, stuck situation, seriously affects main reducing gear service life.Therefore it protects
Demonstrate,prove main cone bearing pre-fastening within the specified scope, it is most important to main reducing gear service life.
As shown in Figure 1, in the prior art, the method for adjustment of main cone bearing pre-fastening is as follows:
S1, the bearing outer ring of main cone big-end bearing assembly 3 and main cone little-end bearing assembly 4 is pressed into bearing block 6 in advance
On, and the bearing inner race roller assembly of main cone big-end bearing assembly 3 is pressed on active conical gear 1 in advance；
S2, the bearing block 6 for being pressed bearing outer ring is assembled to the active circular cone tooth for being pressed bearing inner race roller assembly
On wheel 1, make the Internal and external cycle no-float of main cone big-end bearing assembly 3；
S3, be sequentially placed into along the shaft of active conical gear 1 spacer 11, theoretic throat pretightning force adjust gasket 12 into
Row trial assembly；
S4, the bearing inner race roller assembly that main cone little-end bearing assembly 4 is put into along the shaft of active conical gear 1, and
The bearing inner race roller bearing assembly that main cone little-end bearing assembly 4 is squeezed with authorized pressure (about 8 ton force size), makes main cone big end
The bearing inner race roller assembly of bearing assembly 3 and main cone little-end bearing assembly 4, spacer 11, pretightning force adjustment gasket 12 become one
A rigid entirety；
S5, it keeps pressure constant, uses the rotation pulling force of tension spring measurement bearing block 6；
If the spring of S6, measurement rotate pulling force within the specified scope, illustrate main cone bearing pre-fastening within the specified scope,
Qualification, the thickness composite demand for the pretightning force adjustment gasket 12 being put into；If the spring rotation pulling force of measurement is excessive, illustrate to lead
Cone bearing pretightning force is excessive, and the pretightning force adjustment gasket 12 being put into is thin, needs to increase the thickness of pretightning force adjustment gasket 12, more
After pretightning force adjustment 12 thickness of gasket renewed, step S4~S5 is repeated, until the rotation pulling force of bearing block 6 reaches regulation model
It encloses；If the spring rotation pulling force of measurement is too small, illustrate that main cone bearing pre-fastening is too small, the pretightning force adjustment gasket 12 being put into
Thickness needs to reduce the thickness of pretightning force adjustment gasket 12, after pretightning force adjustment 12 thickness of gasket more renewed, repetition step S4~
S5, until the rotation pulling force of bearing block 6 reaches prescribed limit；
The pressure that S7, unloading are applied on the bearing inner race roller assembly of main cone little-end bearing 4, then the successively high property of fit on
It can wear-resistant oil seal 7, flange assembly 8, O-ring seal 9；
S8, it is screwed with prescribed torque and tightens flange nut 10, and flange nut 10 is subjected to sleeving and riveting locking.
The technological core of the above-mentioned prior art is to adjust gasket by the pretightning force of trial assembly different-thickness repeatedly to make main cone axis
It holds pretightning force and reaches specified value, it may be assumed that first trial assembly is carried out using the main cone bearing pre-fastening adjustment gasket of theoretic throat, in bearing
The rotation pulling force of bearing block is measured using tension spring after applying a fixed load on circle, if the bearing block rotation pulling force measured is being advised
Determine in range, then illustrates main cone bearing pre-fastening within the specified scope, it is qualified；If the bearing block rotation pulling force of measurement is excessive,
Illustrate that main cone bearing pre-fastening is excessive, optional pretightning force adjustment gasket is thin, needs to increase pretightning force adjustment spacer thickness, replacement
New pretightning force adjusts spacer thickness, step before repeating, until measured bearing block rotation pulling force is within the specified scope
Only；If the bearing block rotation pulling force of measurement is too small, illustrate that main cone bearing pre-fastening is too small, optional pretightning force adjusts gasket
Thickness needs to reduce the thickness of pretightning force adjustment gasket, after the pretightning force adjustment spacer thickness more renewed, step before weight, until
Until measured bearing block rotation pulling force reaches in prescribed limit.This pre-pressing structure and Method of Adjustment (choosing to install method) although
Qualified main cone bearing pre-fastening can be finally adjusted out, but needs to add time pretightning force adjusting pad by repeated disassembled and assembled, examination
Piece could adjust out qualified main cone bearing pre-fastening, do so processing step is cumbersome, productive temp is slow, processing quality guarantee it is tired
Difficult, operator's great work intensity, seriously restricts plant produced.Occurred some main flare nut tightening machines or choosing pad currently on the market
Machine (the main flare nut tightening machine of the safe sincere observation and control technology limited liability company exploitation in such as Beijing), although behaviour can be mitigated accordingly
The labor intensity of author, but its structure and the essential idea of assembly do not change, and still choose to install method, therefore redesign one kind
Novel main cone bearing pre-fastening structure and Method of Adjustment are extremely urgent.
Summary of the invention
For above-mentioned defect existing in the prior art, the present invention provides a kind of commercial vehicle main cone bearing pre-tightening structure and
Its Method of Adjustment replaces original pretightning force using the distinctive mechanical characteristic of waveform spacer on the basis of existing Pinion gear assembly
Adjustment gasket is chosen to install repeatedly to adjust the cumbersome technique of main cone bearing pre-fastening, to reach before meeting user's service performance
Put the purpose for improving productive temp, guaranteeing product quality, reducing operator's labor intensity.In conjunction with Figure of description, the present invention
Technical solution it is as follows:
A kind of commercial vehicle main cone bearing pre-tightening structure, by active conical gear 1, main cone big-end bearing assembly 3, main cone small end
Bearing assembly 4, bearing block 6, high-performance abrasion-proof oil sealing 7, flange assembly 8, O-ring seal 9, flange nut 10, adjustment gasket and
Spacer composition, the main cone big-end bearing assembly 3 is by main cone big-end bearing inner ring roller assembly 301 and main cone big-end bearing outer ring
302 mating compositions, the main cone little-end bearing assembly 4 is by main cone little-end bearing inner ring roller assembly 401 and main cone little-end bearing
The mating composition in outer ring 402, the adjustment gasket are that contact zone adjusts gasket 2, and the contact zone adjustment gasket 2 is mounted on actively circle
Between the toothed disc end face of bevel gear 1 and the bearing inner race end face of main cone big-end bearing inner ring roller assembly 301；The spacer is
Waveform spacer 5, the waveform spacer 5 are equipped with corrugated protrusion along axial middle part, and it is big that 5 both ends of waveform spacer act against main cone respectively
On the bearing inner race end face of end bearing inner ring roller assembly 301 and main cone little-end bearing inner ring roller assembly 401, in axial force
Under effect, the waveform spacer 5 generates axial plastic deformation.
Further, the waveform spacer 5 is sleeve shaped, is respectively equipped with a Duan Zhibi along the axial ends of waveform spacer 5
Part 501 is equipped with the corrugated portion 502 of outwardly convex between two sections of vertical wall sections 501, and the corrugated portion 502 is outside
The circular arc ripple of protrusion, corrugated portion 502 are excessively connect with uniform circular arcs shape respectively with the vertical wall section 501 of two sides.
Further, on the gear shaft external peripheral surface of the active conical gear 1, from toothed disc root to gear shaft tail
Portion is successively machined with main cone big-end bearing inner ring roller assembly mounting surface 101, main cone little-end bearing inner ring roller assembly mounting surface
102, flange assembly matching spline 103 and flange nut thread 104.
Further, the bearing block 6 is successively arranged main cone big-end bearing outer ring by inner peripheral surface from the bottom to top along axial direction
Mounting hole 601, main cone little-end bearing outer ring mounting hole 602 and seal mounting hole 603.
Further, the periphery of the high-performance abrasion-proof oil sealing 7 is equipped with bearing block mating surface 701, high-performance abrasion-proof
The inside circumference of oil sealing 7 is equipped with flange and cooperates inner lip 702, is evenly distributed with oil drive back thread on the flange cooperation inner lip 702,
The top circumference outer of the high-performance abrasion-proof oil sealing 7 is equipped with dustproof lip 703.
Further, the lower outer circumferential of the flange assembly 8 is equipped with dust blocking tray 801, outside the bottom end of the flange assembly 8
Circumferential surface is equipped with high-performance abrasion-proof oil seal lip mating surface 802, and the lower part inner circumferential side wall of the flange assembly 8 is equipped with master
Dynamic conical gear cooperates internal spline 803.
A kind of Method of Adjustment of commercial vehicle main cone bearing pre-tightening structure, specific step is as follows for the Method of Adjustment:
Step 1: main cone big-end bearing outer ring 302 and main cone little-end bearing outer ring 402 are pressed respectively with defined pressure
Into bearing block 6；
Step 2: the contact zone chosen in advance adjustment gasket 2 is sleeved on the gear shaft of active conical gear 1, then with rule
Main cone big-end bearing inner ring roller assembly 301 is pressed into the main cone big end of active conical gear 1 by fixed pressure, keeps main cone big
The bearing inner race of end bearing inner ring roller assembly 301 presses against contact zone adjustment gasket 2 on 1 toothed disc of active conical gear；
Step 3: the bearing block 6 for being pressed main cone big-end bearing outer ring 302 is assembled to and has been pressed main cone big end axis
It holds on the active conical gear 1 of inner ring roller assembly 301, makes the main cone big-end bearing inner ring roller of main cone big-end bearing assembly 3
Assembly 301 and 302 no-float of main cone big-end bearing outer ring；
Step 4: along the gear shaft of active conical gear 1, waveform spacer 5 and main cone little-end bearing inner ring are sequentially loaded into
Roller assembly 401；
Step 5: being pressed main cone little-end bearing inner ring roller assembly 401 with defined pressure, after the completion of making press fitting
Main cone little-end bearing inner ring roller assembly 401 is without rollback phenomenon；
Step 6: flange assembly 8 and active conical gear 1 are coupled, and make the bottom end face and main cone of flange assembly 8
The top end surface of little-end bearing inner ring roller assembly 401 is mutually held out against, mounting O-shaped sealing ring 9 on active conical gear 1, and will be dashed forward
Edge nut 10, which screws, is tightened in 1 tail portion of active conical gear, and screws two circles or more；
Step 7: continuously being screwed with defined torque and tighten flange nut 10, and then to being mounted in main cone big-end bearing
Waveform spacer 5 between circle roller assembly 301 and main cone little-end bearing inner ring roller assembly 401 carries out axial press, makes waveform
Spacer 5 generates irreversible plastic deformation；
Step 8: screw tighten flange nut 10 while, measure bearing block 6 rotation pulling force, when the rotation of bearing block 6
When turning pulling force and reaching specified value, stopping, which screws, tightens flange nut 10, to keep axially disposed flange nut 10, flange total
It is formed at 8, main cone little-end bearing inner ring roller assembly 401, waveform spacer 5 and main cone big-end bearing inner ring roller assembly 301
One rigidity is whole；
Step 9: after completing above step one to step 8, flange nut 10 is subjected to sleeving and riveting locking.
Further, in the step 6 and step 7, screw tighten flange nut 10 during, flange nut 10
It is tightened for that can not screw with retracting.
Compared with prior art, the beneficial effects of the present invention are:
1, a kind of commercial vehicle main cone bearing pre-tightening structure of the present invention is utilized on the basis of existing Pinion gear assembly
The distinctive mechanical characteristic of waveform spacer makes it generate irreversible plastic deformation, makes flange nut, flange assembly, main cone big-end bearing
Inner ring roller assembly, waveform spacer and main cone little-end bearing inner ring roller assembly are formed as a rigidity entirety, to eliminate
The parts such as bearing, bearing block make main cone bearing pre-fastening reach specified value due to manufacturing, assembling bring scale error.
2, a kind of Method of Adjustment of commercial vehicle main cone bearing pre-tightening structure of the present invention is peculiar using waveform spacer
Mechanical characteristic replace original choose to install repeatedly using pretightning force adjustment gasket to adjust the cumbersome technique of main cone bearing pre-fastening,
Productive temp, guarantee product quality, reduction operator's labor are improved under the premise of meeting speed reducer assembly service performance to reach
The purpose of fatigue resistance.
Detailed description of the invention
Fig. 1 is the schematic diagram of main cone bearing pre-tightening structure in the prior art；
Fig. 2 is a kind of schematic diagram of commercial vehicle main cone bearing pre-tightening structure of the present invention；
Fig. 3 is in a kind of commercial vehicle main cone bearing pre-tightening structure of the present invention, and each installation of active conical gear is matched
Conjunction face schematic diagram；
Fig. 4 is the structural schematic diagram of waveform spacer in a kind of commercial vehicle main cone bearing pre-tightening structure of the present invention；
Fig. 5 is the structural schematic diagram of bearing block in a kind of commercial vehicle main cone bearing pre-tightening structure of the present invention；
Fig. 6 is high-performance abrasion-proof oil enveloping structure signal in a kind of commercial vehicle main cone bearing pre-tightening structure of the present invention
Figure；
Fig. 7 is flange assembly structure schematic diagram in a kind of commercial vehicle main cone bearing pre-tightening structure of the present invention.
In figure:
1. active conical gear；2. contact zone adjusts gasket；3. main cone big-end bearing assembly；4. main cone small end axis
Hold assembly；
5. waveform spacer；6. bearing block；7. high-performance abrasion-proof oil sealing；8. flange assembly；
9.O type sealing ring；10. flange nut；11. spacer；12. pretightning force tune
Whole gasket；
101. main cone big-end bearing inner ring roller assembly mounting surface；102. main cone little-end bearing inner ring roller assembly is installed
Face；
103. flange assembly cooperates external splines；104. flange nut cooperates external screw thread；
301. main cone big-end bearing inner ring roller assemblies；302. main cone big-end bearing outer rings；
401. main cone little-end bearing inner ring roller assemblies；402. main cone little-end bearing outer rings；
501. waveform spacer vertical wall sections；502. waveform spacer corrugated portions；
601. main cone big-end bearing outer rings are coupled hole；602. main cone little-end bearing outer rings are coupled hole；
603. high-performance abrasion-proof oil sealings are coupled hole；701. bearing block mating surfaces；
702. flanges cooperate lip；703. dustproof lip；
801. dust blocking tray；802. high-performance abrasion-proof oil seal lip mating surfaces；
803. active conical gears cooperate internal spline.
Specific embodiment
For the technical solution and specific work process that the present invention is further explained, in conjunction with specification, specific reality of the invention
It is as follows to apply mode:
As shown in Fig. 2, the invention discloses a kind of commercial vehicle main cone bearing pre-tightening structure, including active conical gear 1, connect
It is resistance to touch area's adjustment gasket 2, main cone big-end bearing assembly 3, main cone little-end bearing assembly 4, waveform spacer 5, bearing block 6, high-performance
Grind oil sealing 7, flange assembly 8, O-ring seal 9 and flange nut 10.Wherein: the main cone big-end bearing assembly 3 is by main cone big end
The mating composition of bearing inner race roller assembly 301 and main cone big-end bearing outer ring 302；The main cone little-end bearing assembly 4 is by main cone
The mating composition of little-end bearing inner ring roller assembly 401 and main cone little-end bearing outer ring 402.
As shown in figure 3, on the gear shaft outer circumference surface of the active conical gear 1, from toothed disc root to gear shaft tail
Portion is successively machined with main cone big-end bearing inner ring roller assembly mounting surface 101, main cone little-end bearing inner ring roller assembly mounting surface
102, flange assembly cooperation external splines 103 and flange nut cooperate external screw thread 104, and wherein main cone big-end bearing inner ring roller is total
It is greater than the diameter of main cone little-end bearing inner ring roller assembly mounting surface 102, main cone little-end bearing inner ring at the diameter of mounting surface 101
The diameter of roller assembly mounting surface 102 is greater than the diameter of flange assembly cooperation external splines 103, and flange assembly cooperates external splines 103
Diameter be greater than the diameter of flange nut cooperation external screw thread 104, flange assembly cooperation external splines 103 is involute spline.
As shown in figure 4, the waveform spacer 5 generally sleeve shaped, is respectively equipped with one section along the axial ends of waveform spacer 5
Vertical wall section 501 is equipped with the corrugated portion 502 of outwardly convex, wherein the vertical wall section between two sections of vertical wall sections 501
501 be the straight tube along axial direction, and the both ends of waveform spacer 5 corresponding to two sections of vertical wall sections 501 are respectively waveform spacer major diameter
End and waveform spacer miner diameter end, waveform spacer bigger diameter end internal diameter is larger, for being matched with main cone big-end bearing assembly 3, waveform
Spacer miner diameter end internal diameter is smaller, for matching with main cone little-end bearing assembly 4；The corrugated portion 502 is outwardly convex
Circular arc ripple, axial section shape are similar to the shape of the normal distribution curve swelled outward, 502 both ends of corrugated portion difference
It is excessively connect with the vertical wall section 501 of two sides with uniform circular arcs shape.
As shown in figure 5,6 inner peripheral surface of bearing block is successively arranged outside main cone big-end bearing from the bottom to top in the axial direction
Enclose mounting hole 601, main cone little-end bearing outer ring mounting hole 602 and high-performance abrasion-proof seal mounting hole 603, wherein the master
The internal diameter for boring big-end bearing outer ring mounting hole 601 is greater than the internal diameter and height of main cone little-end bearing outer ring mounting hole 602
The internal diameter of the internal diameter of performance wearable seal mounting hole 603, high-performance abrasion-proof oil sealing 603 is greater than outside main cone little-end bearing
Enclose the internal diameter of mounting hole 602.
As shown in fig. 6, the periphery of the high-performance abrasion-proof oil sealing 7 is equipped with bearing block mating surface 701, high-performance abrasion-proof
The inside circumference of oil sealing 7 is equipped with flange and cooperates lip 702, is evenly distributed with oil drive back thread on the flange cooperation lip 702, described
The effect of oil drive back thread is to make flange assembly 8 in high-speed rotation process, prevents the lubricating oil in speed reducer assembly from leaking out, the height
The top circumference outer of performance wearable oil sealing 7 is equipped with dustproof lip 703, and the effect of the dustproof lip 703 is can be with flange assembly 8
The dust-blocking cover 801 of upper setting matches, and prevents extraneous soil, sandstone, dust from entering at flange cooperation inner lip 702, Yi Miangao
7 disabling damage of performance wearable oil sealing and oil leak.
As shown in fig. 7, the lower outer circumferential of the flange assembly 8 is equipped with a dust blocking tray 801, the flange assembly 8
Bottom end external peripheral surface is equipped with high-performance abrasion-proof oil seal lip mating surface 802, on the lower part inner circumferential side wall of the flange assembly 8
Cooperate internal spline 803 equipped with active conical gear, the active conical gear cooperation internal spline 803 is involute spline.
Assembly according to the structure of above-mentioned each component part of commercial vehicle main cone bearing pre-tightening structure, between each component part
Relationship is as follows:
As shown in Fig. 2, the active conical gear 1 is arranged at the central axis of the bearing block 6；The active circular cone
Main cone big-end bearing assembly is equipped at the gear back side diameter of axle of gear 1 between the inner peripheral surface of 6 lower end of outer circumference surface and bearing block
3, the main cone big-end bearing assembly 3 is with main cone big-end bearing inner ring roller assembly 301 and main cone big-end bearing outer ring 302
Installation composition, to realize that the big end of active conical gear 1 is mounted on bearing block 6 by the support of main cone big-end bearing assembly 3,
In, the interference fit of main cone big-end bearing inner ring roller assembly 301 in main cone big-end bearing assembly 3 is mounted on active conical gear
On the main cone big-end bearing inner ring roller assembly mounting surface 101 being arranged on 1, the main cone big end axis in main cone big-end bearing assembly 3
The interference fit of bearing outer-ring 302 is mounted in the main cone big-end bearing outer ring mounting hole 601 being arranged on bearing block 6；The active circle
What is be arranged between the middle section top outer circumference surface of 1 gear shaft of bevel gear and the middle section top inner peripheral surface of bearing block 6 has main cone small
End bearing assembly 4, the main cone little-end bearing assembly 4 is by main cone little-end bearing inner ring roller assembly 401 and main cone little-end bearing
Outer ring 402 is coupled composition, to realize that the small end of active conical gear 1 is mounted on by the support of main cone little-end bearing assembly 4
On bearing block 6, wherein the interference fit of main cone little-end bearing inner ring roller assembly 401 in main cone little-end bearing assembly 4 is mounted on
On the main cone little-end bearing inner ring roller assembly mounting surface 102 being arranged on active conical gear 1, in main cone little-end bearing assembly 4
Main cone little-end bearing outer ring 402 interference fit be mounted on the main cone little-end bearing outer ring mounting hole 602 being arranged on bearing block 6
It is interior；The contact zone adjustment gasket 2 presses the toothed disc end face for being mounted on active conical gear 1 and main cone big-end bearing inner ring rolls
Between the bearing inner race lower end surface of sub- assembly 301；The waveform spacer 5 be sleeved on 1 middle part big end of active conical gear with it is small
On excessive shaft part between end, the bigger diameter end of the waveform spacer 5 acts against the top of main cone big-end bearing inner ring roller assembly 301
On end surface, the miner diameter end of the waveform spacer 5 is acted against on the bottom end face of main cone little-end bearing inner ring roller assembly 401,
Middle part is equipped with corrugated protrusion to the waveform spacer 5 in the axial direction, under the action of axial force, 5 middle part of waveform spacer
Corrugated protrusion can generate axial plastic deformation；The flange assembly 8 is arranged in outside the gear shaft upper section of active conical gear 1
Between periphery and the upper end inner peripheral surface of bearing block 6, in the active conical gear cooperation that flange assembly 8 is arranged by its underpart
Spline 803 and the flange assembly cooperation external splines 103 that 1 top of active conical gear is arranged are in mating connection, the flange
The bottom end face of assembly 8 is matched and is held out against with the upper surface of the main cone little-end bearing inner ring roller assembly 401；It is described prominent
That installs between the bottom cylindrical circumferential surface of edge assembly 8 and the top outer circumference surface of bearing block 6 has a high-performance abrasion-proof oil sealing 7,
The high-performance abrasion-proof seal mounting hole 603 being arranged on high-performance abrasion-proof oil sealing 7 and bearing block 6 is interference fitted, high-performance abrasion-proof oil
802 interference of high-performance abrasion-proof oil seal lip mating surface being arranged on the flange cooperation lip 702 and flange assembly 8 being arranged in envelope 7
Cooperation, to prevent flange assembly 8 in high-speed rotation process, the lubricating oil in speed reducer assembly is leaked out, the high-performance abrasion-proof
The dust-blocking cover 801 being arranged in the dustproof lip 703 and flange assembly 8 of the setting of 7 top of oil sealing matches, to prevent extraneous soil, sand
Stone, dust enter at flange cooperation lip 702, make 7 disabling damage of high-performance abrasion-proof oil sealing and oil leak；The flange nut 10 is pacified
Cooperate 104 company of matching of external screw thread in the nut mounting groove of flange assembly 8, and with the flange nut of active conical gear 1
It connects；The O-ring seal 9 is mounted between the fit clearance of 1 gear shaft of flange nut 10, flange 8 and active conical gear real
Now seal.
According to above-mentioned commercial vehicle main cone bearing pre-tightening structure, the present invention also provides a kind of commercial vehicle main cone bearing pre-tightened knots
The Method of Adjustment of structure, detailed process is as follows:
Step 1: main cone big-end bearing outer ring 302 is pressed into outside the main cone big-end bearing of bearing block 6 with defined pressure
It encloses in mounting hole 601, guarantees to be press-fit into place, and main cone little-end bearing outer ring 402 is pressed into bearing block 6 with defined pressure
In main cone little-end bearing outer ring mounting hole 602, guarantee to be press-fit into place；
Step 2: the contact zone chosen in advance adjustment gasket 2 is sleeved on the gear shaft of active conical gear 1, contact zone
It adjusts 2 side of gasket and 1 toothed disc back face of active conical gear to touch, then with defined pressure by main cone big-end bearing inner ring
Roller assembly 301 is pressed on the main cone big-end bearing inner ring roller assembly mounting surface 101 being arranged on active conical gear 1, is made
Contact zone adjustment gasket 2 is pressed against active conical gear 1 by the bearing inner race end face of main cone big-end bearing inner ring roller assembly 301
On the toothed disc back side, guarantee to be press-fit into place；
Step 3: the bearing block 6 for being pressed main cone big-end bearing outer ring 302 is assembled to and has been pressed main cone big end axis
It holds on the active conical gear 1 of inner ring roller assembly 301, rolls main cone big-end bearing outer ring 302 and main cone big-end bearing inner ring
Sub- assembly 301 matches the Internal and external cycle no-float for the main cone big-end bearing assembly 3 being combined into；
Step 4: along the gear shaft of active conical gear 1, waveform spacer 5 and main cone little-end bearing inner ring are sequentially loaded into
Roller assembly 401；
Step 5: being pressed main cone little-end bearing inner ring roller assembly 401 with defined pressure using special tooling,
It needs to guarantee main cone little-end bearing inner ring roller assembly 401 without rollback phenomenon after the completion of press fitting；
Step 6: the flange assembly cooperation cooperation of external splines 103 being arranged on flange assembly 8 and active conical gear 1 is pacified
Dress, holds out against the bottom end face of flange assembly 8 and the top end surface of main cone little-end bearing inner ring roller assembly 401 mutually；Actively
The flange assembly cooperation 103 tail end mounting O-shaped sealing ring 9 of external splines being arranged on conical gear 1, and flange nut 10 screwed stubborn
On the flange nut cooperation external screw thread 104 being tightly arranged on active conical gear 1, and two circles or more are screwed, and tighten screwing
During flange nut 10, flange nut 10 is that can not screw with retracting to tighten；
Step 7: continuously being screwed with defined torque and tighten flange nut 10, makes main cone big-end bearing inner ring roller assembly
Between 301 bearing inner race and the bearing inner race of main cone little-end bearing inner ring roller assembly 401 distance reduce, and then to the two it
Between waveform spacer 5 carry out axial press, so that waveform spacer 5 is generated irreversible plastic deformation, and tighten flange nut screwing
During 10, flange nut 10 is that can not screw with retracting to tighten；
Step 8: screw tighten flange nut 10 while, using measuring instrument measurement bearing block 6 rotation pulling force,
When the rotation pulling force of bearing block 6 reaches specified value (i.e. main cone bearing pre-fastening reaches specified value), stopping, which screws, tightens flange
Nut 10, to make axially disposed flange nut 10, flange assembly 8, main cone little-end bearing inner ring roller assembly 401, wave
It is whole that shape spacer 5 and main cone big-end bearing inner ring roller assembly 301 form a rigidity；
Step 9: after completing above step one to step 8, flange nut 10 is subjected to sleeving and riveting locking.
In conclusion commercial vehicle main cone bearing pre-tightening structure of the present invention and its Method of Adjustment are total in existing main cone
On the basis of, so that it is generated irreversible plastic deformation using the distinctive mechanical characteristic of waveform spacer, keep flange nut, flange total
At, main cone little-end bearing inner ring roller assembly, waveform spacer, main cone big-end bearing inner ring roller assembly formed a rigidity it is whole
Body reaches main cone bearing pre-fastening to eliminate the parts such as bearing, bearing block due to manufacturing, assembling bring scale error
Specified value has reached to effectively prevent original pretightning force adjustment gasket optional cumbersome technique repeatedly and has met usability
The purpose for improving productive temp under the premise of energy, guaranteeing product quality, reducing operator's labor intensity.
Claims (8)
1. a kind of commercial vehicle main cone bearing pre-tightening structure, small by active conical gear (1), main cone big-end bearing assembly (3), main cone
End bearing assembly (4), bearing block (6), high-performance abrasion-proof oil sealing (7), flange assembly (8), O-ring seal (9), flange nut
(10), gasket and spacer composition are adjusted, the main cone big-end bearing assembly (3) is by main cone big-end bearing inner ring roller assembly
(301) and main cone big-end bearing outer ring (302) mating composition, the main cone little-end bearing assembly (4) is by main cone little-end bearing
Enclose roller assembly (401) and main cone little-end bearing outer ring (402) mating composition, it is characterised in that:
The adjustment gasket is that contact zone adjusts gasket (2), and contact zone adjustment gasket (2) is mounted on active conical gear
(1) between the bearing inner race end face of toothed disc end face and main cone big-end bearing inner ring roller assembly (301)；
The spacer is waveform spacer (5), and the waveform spacer (5) is equipped with corrugated protrusion, waveform spacer (5) along axial middle part
Both ends act against main cone big-end bearing inner ring roller assembly (301) and main cone little-end bearing inner ring roller assembly (401) respectively
On bearing inner race end face, under the action of axial force, the waveform spacer (5) generates axial plastic deformation.
2. a kind of commercial vehicle main cone bearing pre-tightening structure as described in claim 1, it is characterised in that:
The waveform spacer (5) is sleeve shaped, is respectively equipped with one section of vertical wall section (501) along the axial ends of waveform spacer (5),
The corrugated portion (502) of outwardly convex is equipped between two sections of vertical wall sections (501), the corrugated portion (502) is convex
The circular arc ripple risen, corrugated portion (502) are excessively connect with uniform circular arcs shape respectively with the vertical wall section (501) of two sides.
3. a kind of commercial vehicle main cone bearing pre-tightening structure as described in claim 1, it is characterised in that:
On the gear shaft external peripheral surface of the active conical gear (1), successively processed from toothed disc root to gear shaft tail portion
There is main cone big-end bearing inner ring roller assembly mounting surface (101), main cone little-end bearing inner ring roller assembly mounting surface (102), dash forward
Edge assembly cooperates external splines (103) and flange nut external screw thread (104).
4. a kind of commercial vehicle main cone bearing pre-tightening structure as described in claim 1, it is characterised in that:
The bearing block (6) be successively arranged from the bottom to top by inner peripheral surface along axial direction main cone big-end bearing outer ring mounting hole (601),
Main cone little-end bearing outer ring mounting hole (602) and seal mounting hole (603).
5. a kind of commercial vehicle main cone bearing pre-tightening structure as described in claim 1, it is characterised in that:
The periphery of the high-performance abrasion-proof oil sealing (7) is equipped with bearing block mating surface (701), high-performance abrasion-proof oil sealing (7)
Inside circumference is equipped with flange cooperation lip (702), is evenly distributed with oil drive back thread, the height on flange cooperation lip (702)
The top circumference outer of performance wearable oil sealing (7) is equipped with dustproof lip (703).
6. a kind of commercial vehicle main cone bearing pre-tightening structure as described in claim 1, it is characterised in that:
The lower outer circumferential of the flange assembly (8) is equipped with dust blocking tray (801), the bottom end outer circle weekly form of the flange assembly (8)
Face is equipped with high-performance abrasion-proof oil seal lip mating surface (802), and the lower part inner circumferential side wall of the flange assembly (8) is equipped with actively
Conical gear cooperates internal spline (803).
7. a kind of Method of Adjustment of commercial vehicle main cone bearing pre-tightening structure as described in claim 1, it is characterised in that:
Specific step is as follows for the Method of Adjustment:
Step 1: main cone big-end bearing outer ring (302) and main cone little-end bearing outer ring (402) are pressed respectively with defined pressure
In to bearing block (6)；
Step 2: the contact zone chosen in advance adjustment gasket (2) is sleeved on the gear shaft of active conical gear (1), then with rule
Main cone big-end bearing inner ring roller assembly (301) is pressed into the main cone big end of active conical gear (1) by fixed pressure, makes to lead
Contact zone adjustment gasket (2) is pressed against active conical gear (1) by the bearing inner race for boring big-end bearing inner ring roller assembly (301)
On toothed disc；
Step 3: the bearing block (6) for being pressed main cone big-end bearing outer ring (302) is assembled to and has been pressed main cone big end axis
It holds on the active conical gear (1) of inner ring roller assembly (301), in the main cone big-end bearing for making main cone big-end bearing assembly (3)
Enclose roller assembly (301) and main cone big-end bearing outer ring (302) no-float；
Step 4: along the gear shaft of active conical gear (1), waveform spacer (5) and main cone little-end bearing inner ring are sequentially loaded into
Roller assembly (401)；
Step 5: being pressed main cone little-end bearing inner ring roller assembly (401) with defined pressure, makes master after the completion of press fitting
Little-end bearing inner ring roller assembly (401) are bored without rollback phenomenon；
Step 6: flange assembly (8) and active conical gear (1) are coupled, and make bottom end face and the master of flange assembly (8)
The top end surface of cone little-end bearing inner ring roller assembly (401) is mutually held out against, mounting O-shaped sealing ring on active conical gear (1)
(9), and flange nut (10) is screwed and is tightened in active conical gear (1) tail portion, and screw two circles or more；
Step 7: continuously being screwed with defined torque and tightened flange nut (10), and then to being mounted on main cone big-end bearing inner ring
Waveform spacer (5) between roller assembly (301) and main cone little-end bearing inner ring roller assembly (401) carries out axial press, makes
Waveform spacer (5) generates irreversible plastic deformation；
Step 8: screw tighten flange nut (10) while, measure bearing block (6) rotation pulling force, when bearing block (6)
For rotation pulling force when reaching specified value, stopping, which screws, tightens flange nut (10), thus make axially disposed flange nut (10),
Flange assembly (8), main cone little-end bearing inner ring roller assembly (401), waveform spacer (5) and main cone big-end bearing inner ring roller
It is whole that assembly (301) forms a rigidity；
Step 9: after completing above step one to step 8, flange nut (10) are subjected to sleeving and riveting locking.
8. a kind of Method of Adjustment of commercial vehicle main cone bearing pre-tightening structure as claimed in claim 7, it is characterised in that:
In the step 6 and step 7, screw tighten flange nut (10) during, flange nut (10) be can not return
It screws with moving back and tightens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910013606.1A CN109780179A (en) | 2019-01-08 | 2019-01-08 | A kind of commercial vehicle main cone bearing pre-tightening structure and its Method of Adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910013606.1A CN109780179A (en) | 2019-01-08 | 2019-01-08 | A kind of commercial vehicle main cone bearing pre-tightening structure and its Method of Adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109780179A true CN109780179A (en) | 2019-05-21 |
Family
ID=66499219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910013606.1A Pending CN109780179A (en) | 2019-01-08 | 2019-01-08 | A kind of commercial vehicle main cone bearing pre-tightening structure and its Method of Adjustment |
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| Country | Link |
|---|---|
| CN (1) | CN109780179A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112356387A (en) * | 2020-10-19 | 2021-02-12 | 珠海格力智能装备有限公司 | Pre-molding base structure and injection molding machine with same |
| CN114147454A (en) * | 2021-11-15 | 2022-03-08 | 西安航天精密机电研究所 | Small-sized dynamically tuned gyro bearing system assembling tool and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112356387A (en) * | 2020-10-19 | 2021-02-12 | 珠海格力智能装备有限公司 | Pre-molding base structure and injection molding machine with same |
| CN114147454A (en) * | 2021-11-15 | 2022-03-08 | 西安航天精密机电研究所 | Small-sized dynamically tuned gyro bearing system assembling tool and method |
| CN114147454B (en) * | 2021-11-15 | 2022-11-01 | 西安航天精密机电研究所 | Small-sized dynamically tuned gyro bearing system assembling tool and method |
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