CN101457793A - Face seal bearing structure for walking device chasis component of caterpillar machinery - Google Patents
Face seal bearing structure for walking device chasis component of caterpillar machinery Download PDFInfo
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- CN101457793A CN101457793A CNA2009101148217A CN200910114821A CN101457793A CN 101457793 A CN101457793 A CN 101457793A CN A2009101148217 A CNA2009101148217 A CN A2009101148217A CN 200910114821 A CN200910114821 A CN 200910114821A CN 101457793 A CN101457793 A CN 101457793A
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- wheel
- face seal
- wheel shaft
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Abstract
The invention discloses an end surface seal bearing structure used for a chassis part of a crawler-type machine running device. The seal bearing comprises the inner ring of the bearing and the outer ring of the bearing; a rolling body is arranged between the inner ring of the bearing and the outer ring of the bearing; the invention is characterized in that return felt washers are arranged between the inner ring and the outer ring of the bearing and at the two sides of the rolling body. Adopting the end surface seal bearing not only can lead the crawler-type machine running device to realize the functions of return and seal, but also can improve the product quality and the working efficiency of assembling and reduce the maintaining cost.
Description
Technical field
The invention belongs to the design field of caterpillar machinery traveling gear vehicle chassis component; Be specifically related to a kind of assembling effect and better be used for track roller, upper track wheel and the guide wheel of caterpillar machinery traveling gear vehicle chassis component.
Background technique
The tracked construction equipment traveling gear is divided into the crawler unit of crawler unit that track roller is arranged and no track roller according to having or not of track roller.Because the wearing and tearing of the crawler unit of no track roller are comparatively serious, application area is less.There is the crawler unit of track roller mainly to form, i.e. crawler belt, driving wheel, guide wheel, holder sprocket wheel, track roller and tension device, track frame etc. by " four-wheel one band ".Driving wheel is in the pilled-in selvedge of crawler belt during operation, drive section and ground connection section and produce relay, owing between crawler belt under the track roller and ground enough adhesion is arranged, stop pulling out of crawler belt, force driving wheel scrolling crawler belt, upper saw pulley is routed to crawler belt on the ground again, thereby makes tracked construction equipment borrow track roller to move forward along the crawler belt rail.Article two, crawler belt is driven by different drive unit (as fluid pressure drive device) respectively, realizes turning on the spot when the drive unit driving direction is opposite; When only a side drive device drives, realize turning to around a side crawler belt.
The tracked construction equipment traveling gear is because bearing area is big, ground connection is littler than the Asia, the traction adhesion property is good, and being difficult for skidding is that other traveling gears can not be compared; In a lot of industries application is arranged all.But the complicated in mechanical structure of the type, weight is big, and motional inertia is big, and shock-absorbing capacity is poor, " four-wheel one band " serious wear; And these structural costs are higher.How reducing the wearing and tearing of these mechanisms and maintaining easily is the emphasis problem of related domain concern.
At present, be bearing in the four-wheel (driving wheel, guide wheel, holder sprocket wheel, track roller) in the tracked construction equipment traveling gear than what be easier to damage; A lot of bearings " are burnt to death " and are caused scrapping.And the damage of these bearings mainly is the relatively poor and wearing and tearing of the sealability of bearing.As Fig. 1 is track roller sealing configuration of the prior art; Fig. 2 is a upper track wheel structure of the prior art; Fig. 3 is a guide wheel structure of the prior art; Wherein, be equiped with wheel shaft 2 in the wheel body 1, the bearing 4 that suit and wheel body 1 are fixed on wheel shaft 2, bearing 4 outsides are by oil sealing sealing 5, the wheel body outside is fixed bearing and wheel body by shaft block ring 3 (jump ring), driving wheel, guide wheel, holder sprocket wheel, track roller are provided with the filling oilhole, and the perfusion oil body is lubricated in wheel body.Because this device need be with the bearing outside by oil sealing sealing 5, the selection of oil sealing sealing spare is important, and assembly technical requirement is than higher.After oil sealing installed on the wheel shaft, the contractile force of the pressure of its cutting edge and self-tightening spring produced certain power of radially holding tightly to axle, interdicted leakage-gap, reached the purpose of sealing.In present prior art, oil sealing sealing spare normally adopts the muddy water oil sealing, and this apparatus cost is higher, causes the maintenance cost of whole traveling gear very high.
The tracked construction equipment traveling gear needs earlier wheel shaft to be packed in the wheel body when assembling usually, and bearing set and oil sealing sealing on wheel shaft reinstall jump ring and fix.Whole assembly process is more loaded down with trivial details, and packaging efficiency is low when maintenance and replacing, and it is many to take up room.Because the Sealing between wheel shaft and wheel body is bad easily or damage, cause traveling gear to use meeting leakage of oil between a period of time rear-wheel spindle and wheel body, the replacing of parts is comparatively frequent, causes maintenance cost higher.
Summary of the invention
The object of the invention provides a kind of track roller, upper track wheel or guide wheel that is used for caterpillar machinery traveling gear vehicle chassis component, has solved the track roller in the caterpillar machinery traveling gear vehicle chassis component in the prior art, upper track wheel or inconvenient, the problems such as maintenance cost is higher, easy leakage of oil of guide wheel assembling.
In order to solve these problems of the prior art, technological scheme provided by the invention is as follows:
A kind of end face seal bearing structure that is used for caterpillar machinery traveling gear vehicle chassis component, stuffing box bearing comprises bearing inner race and bearing outer ring; Between the inside and outside circle of described bearing, be provided with rolling element; It is characterized in that between described bearing enclose, described rolling element both sides are provided with the revolution oil sealing.
Preferably, described bearing arranged outside has protection apron, and protection apron is fixed on bearing inner race or the bearing outer ring and described bearing seal one.
Preferably, also be provided with seal ring between the inside and outside circle of described bearing, described seal ring is the hull rubber seal ring; The seal ring inboard is the lubricating grease filling.
Preferably, the bearing inner race or the outer ring of described bearing offer seal groove, and seal groove is fixed described seal ring, the lip portion of described seal ring and bearing outer ring internal diameter that contacts or bearing inner race external diameter interference fit.
Preferably, interference fit between seal groove on described bearing inner race or the outer ring and seal ring, and open with hypotenuse in the seal groove.
Another object of the present invention is to provide the track roller in a kind of caterpillar machinery traveling gear vehicle chassis component, comprise wheel body, wheel shaft; Described wheel shaft is arranged in the wheel body, is set with the end face seal bearing structure on the described wheel shaft; Described wheel body and wheel shaft are inboard by end face seal bearing seal, and described wheel shaft and end face seal bearing radially are fastenedly connected by shaft block ring.
Preferably, interference fit between described track roller wheel shaft and end face seal bearing, shaft block ring and the wheel shaft.
Another purpose of the present invention is to provide the upper track wheel in a kind of caterpillar machinery traveling gear vehicle chassis component, comprises wheel body, wheel shaft; Described wheel shaft is arranged in the wheel body, is fixed with the end face seal bearing structure on the described wheel body; Described wheel body is connected by end face seal bearing seal with wheel shaft is inboard; Described wheel shaft and end face seal bearing radially are fastenedly connected by shaft block ring.
Another purpose of the present invention is to provide a kind of guide wheel that is used for caterpillar machinery traveling gear vehicle chassis component, comprises wheel body, wheel shaft; Described wheel shaft is arranged in the wheel body, is fixed with the end face seal bearing structure on the described wheel body; Described wheel body is connected by end face seal bearing seal with wheel shaft is inboard; Described wheel shaft and end face seal bearing radially are fastenedly connected by shaft block ring.
Another purpose of the present invention is to provide a kind of caterpillar machinery traveling gear, and described traveling gear comprises the track roller of end face seal bearing structure sealing, the upper track wheel of end face seal bearing structure sealing, the guide wheel of end face seal bearing structure sealing.
The research of bearing performance
The inventor is through the discovery that studies for a long period of time, and the level of the performance of stuffing box bearing, precision and reliability of service life directly influences the quality of each parts in the caterpillar machinery traveling gear.As those of ordinary skills can understand, stuffing box bearing can adopt contact-type and contactless rubber seal, and additional dustproof covered structure.
When adopting noncontact seal, its gap is controlled at more than the 0.2mm; Preferably be controlled at 0.10～0.15mm.And when adopting contact seal, the magnitude of interference of contact lip and bearing inner race contact position, and the form of the lip portion of seal ring affects the quality of stuffing box bearing.The form of the lip portion of seal ring can be single lip, lips, three lip formulas.In principle need be in bearing during design during heat expansion inner air can in bearing, discharge, and do not allow external agency to enter during shrinkage.So the contact position of design is inclined-plane, the outside, the frictional force that interference fit produces is less, and effectively dustproof, waterproof.Certainly, between two lips, be coated with, can strengthen the sealing effect of stuffing box bearing with a spot of lubricating grease.
The seal groove of offering on the Internal and external cycle of bearing is used for fixing seal ring on the one hand, can guarantee the requirement of seal clearance on the other hand again.At bearing inner race fluting and in groove, open, mainly be for its sealing labyrinth size that extends, to strengthen its sealing effect with hypotenuse.About the design of bearing inner race external diameter, as the chamfering of inner ring external diameter and end; And the structure material of seal ring etc. can expect understanding the while of the present invention the performance change of stuffing box bearing and action effect those of ordinary skills, repeats no more here.
The caterpillar machinery traveling gear vehicle chassis component that the present invention obtains is in when assembling, in the wheel body of earlier wheel shaft being packed into, and suit stuffing box bearing on wheel shaft, and stuffing box bearing is fixed by pack into jump ring and wheel body.Because stuffing box bearing possesses the function of sealing and bearing simultaneously, when guaranteeing structure function of the present invention, realized that assembling is simple; And because the manufacture cost of stuffing box bearing is comparatively cheap, so the caterpillar machinery traveling gear cost that the present invention obtains is lower.
Change the structure of the bearing of available technology adopting in the technological scheme provided by the invention in conjunction with oil sealing sealing (being generally the muddy water oil sealing), but employing stuffing box bearing, promptly between bearing enclose, increase the revolution oil sealing, both reached revolute function, can reach sealing effect again; More preferably, prevent from the impact to the revolution oil sealing such as outside earth and stone to have increased protection apron such as shoulder guard, improved the reliability of wheel body sealing in the bearing outside in order to improve.
Because stuffing box bearing of the present invention is the bearing structure of sealing one, both conserve space had improved packaging efficiency again; And owing to adopt interference fit between bearing and wheel body, bearing and axle, the fabulous outside muddy water that prevents enters wheel body inside, has guaranteed the reliability of sealing.
In sum, the present invention obtains track roller in the caterpillar machinery traveling gear vehicle chassis component, and the structure of upper track wheel and guide wheel adopts the end face seal bearing to reach the function of revolution and sealing, and the quality and the assembly working efficient of raising product have reduced maintenance cost.During according to technological scheme of the present invention assembling caterpillar machinery traveling gear vehicle chassis component not only efficiently, but also reliable.This technological scheme can be applied to and comprise medial and small construction machinery, in the vehicle chassis component of caterpillar machineries such as building machinery, farm machinery, special mechanical.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described:
Fig. 1 is the sealing configuration of caterpillar machinery traveling gear vehicle chassis component upper track wheel middle (center) bearing in the prior art;
Fig. 2 is the sealing configuration of track roller bearing in the caterpillar machinery traveling gear vehicle chassis component in the prior art;
Fig. 3 is the structure of embodiment of the invention caterpillar machinery traveling gear vehicle chassis component upper track wheel stuffing box bearing;
Fig. 4 is the structure of embodiment of the invention caterpillar machinery traveling gear vehicle chassis component track roller stuffing box bearing;
Wherein: 1 is wheel body, and 2 is wheel shaft, and 3 is shaft block ring, and 4 is bearing, and 5 is oil sealing sealing spare; 6 are the end face seal bearing.
Embodiment
For the technological scheme of more detailed statement foregoing invention, the following inventor lists specific embodiment and comes bright technique effect; It is emphasized that these embodiments are used to the present invention is described and are not limited to limit the scope of the invention.
The sealed bearing structure of embodiment's 1 upper track wheel
As Fig. 3, this upper track wheel comprises wheel body 1, wheel shaft 2, and wheel shaft is arranged in the wheel body, is fixed with end face seal bearing 6 structures on the wheel body; Wheel body is connected by end face seal bearing seal with wheel shaft is inboard; Wheel shaft and stuffing box bearing are fastening fixing by shaft block ring 3 (jump ring).Wherein stuffing box bearing comprises bearing inner race and bearing outer ring; Between the inside and outside circle of bearing, be provided with rolling element; Between bearing enclose, the rolling element both sides are provided with the revolution oil sealing.The bearing arranged outside has protection apron, and protection apron is fixed on bearing inner race or the bearing outer ring and the bearing seal one.Also be provided with seal ring between the inside and outside circle of bearing, described seal ring is the hull rubber seal ring; The seal ring inboard is the lubricating grease filling.
The bearing inner race or the outer ring of bearing offer seal groove, and seal groove is fixed described seal ring, the lip portion of described seal ring and bearing outer ring internal diameter that contacts or bearing inner race external diameter interference fit.Interference fit between seal groove on bearing inner race or the outer ring and seal ring, and open with hypotenuse in the seal groove.
The sealed bearing structure of embodiment's 2 track rollers
As Fig. 4, this track roller comprises wheel body 1, wheel shaft 2; Wheel shaft is arranged in the wheel body, fixing seal bearing 6 structures on the wheel body; Wheel body is connected by end face seal bearing seal with wheel shaft; Wheel shaft and stuffing box bearing are fastening fixing by shaft block ring 3 (jump ring).Interference fit between shaft block ring and end face seal bearing, end face seal bearing and the wheel shaft.Wherein stuffing box bearing comprises bearing inner race and bearing outer ring; Between the inside and outside circle of bearing, be provided with rolling element; Between bearing enclose, the rolling element both sides are provided with the revolution oil sealing.The bearing arranged outside has protection apron, and protection apron is fixed on bearing inner race or the bearing outer ring and the bearing seal one.Also be provided with seal ring between the inside and outside circle of bearing, described seal ring is the hull rubber seal ring; The seal ring inboard is the lubricating grease filling.
The bearing inner race or the outer ring of bearing offer seal groove, and seal groove is fixed described seal ring, the lip portion of described seal ring and bearing outer ring internal diameter that contacts or bearing inner race external diameter interference fit.Interference fit between seal groove on bearing inner race or the outer ring and seal ring, and open with hypotenuse in the seal groove.
Above-mentioned example only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the people who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalent transformations that spirit is done according to the present invention or modification all should be encompassed within protection scope of the present invention.
Claims (10)
1, a kind of end face seal bearing structure that is used for caterpillar machinery traveling gear vehicle chassis component, stuffing box bearing comprises bearing inner race and bearing outer ring; Between the inside and outside circle of described bearing, be provided with rolling element; It is characterized in that between described bearing enclose, described rolling element both sides are provided with the revolution oil sealing.
2, the end face seal bearing structure that is used for caterpillar machinery traveling gear vehicle chassis component according to claim 1, it is characterized in that described bearing arranged outside has protection apron, protection apron is fixed on bearing inner race or the bearing outer ring and described bearing seal one.
3, the end face seal bearing structure that is used for caterpillar machinery traveling gear vehicle chassis component according to claim 1 is characterized in that also being provided with seal ring between the inside and outside circle of described bearing, and described seal ring is the hull rubber seal ring; The seal ring inboard is the lubricating grease filling.
4, the end face seal bearing structure that is used for caterpillar machinery traveling gear vehicle chassis component according to claim 1, the bearing inner race or the outer ring that it is characterized in that described bearing offer seal groove, seal groove is fixed described seal ring, the lip portion of described seal ring and bearing outer ring internal diameter that contacts or bearing inner race external diameter interference fit.
5, the end face seal bearing structure that is used for caterpillar machinery traveling gear vehicle chassis component according to claim 1 is characterized in that interference fit between seal groove on described bearing inner race or the outer ring and seal ring, and opens with hypotenuse in the seal groove.
6, the track roller in a kind of caterpillar machinery traveling gear vehicle chassis component comprises wheel body, wheel shaft; Described wheel shaft is arranged in the wheel body, it is characterized in that being set with on the described wheel shaft the described end face seal bearing structure of claim 1; Described wheel body and wheel shaft are inboard by end face seal bearing seal, and described wheel shaft and end face seal bearing radially are fastenedly connected by shaft block ring.
7, according to the track roller in the described caterpillar machinery traveling gear of claim 6 vehicle chassis component, it is characterized in that interference fit between described track roller wheel shaft and end face seal bearing, shaft block ring and the wheel shaft.
8, the upper track wheel in a kind of caterpillar machinery traveling gear vehicle chassis component comprises wheel body, wheel shaft; Described wheel shaft is arranged in the wheel body, it is characterized in that being fixed with on the described wheel body the described end face seal bearing structure of claim 1; Described wheel body is connected by end face seal bearing seal with wheel shaft is inboard; Described wheel shaft and end face seal bearing radially are fastenedly connected by shaft block ring.
9, a kind of guide wheel that is used for caterpillar machinery traveling gear vehicle chassis component comprises wheel body, wheel shaft; Described wheel shaft is arranged in the wheel body, it is characterized in that being fixed with on the described wheel body the described end face seal bearing structure of claim 1; Described wheel body is connected by end face seal bearing seal with wheel shaft is inboard; Described wheel shaft and end face seal bearing radially are fastenedly connected by shaft block ring.
10, a kind of caterpillar machinery traveling gear is characterized in that described traveling gear comprises the guide wheel that the described end face seal bearing structure of upper track wheel, claim 1 of the described end face seal bearing structure sealing of track roller, claim 1 of the described end face seal bearing structure sealing of claim 1 seals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101148217A CN101457793A (en) | 2009-01-08 | 2009-01-08 | Face seal bearing structure for walking device chasis component of caterpillar machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101148217A CN101457793A (en) | 2009-01-08 | 2009-01-08 | Face seal bearing structure for walking device chasis component of caterpillar machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101457793A true CN101457793A (en) | 2009-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101148217A Pending CN101457793A (en) | 2009-01-08 | 2009-01-08 | Face seal bearing structure for walking device chasis component of caterpillar machinery |
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| Country | Link |
|---|---|
| CN (1) | CN101457793A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837993A (en) * | 2017-03-06 | 2017-06-13 | 广西汽车集团有限公司 | A kind of chain and its directive wheel |
| CN113290472A (en) * | 2021-06-28 | 2021-08-24 | 李兆伟 | Pre-buried exposing reinforcing bar rust cleaning device of building engineering |
-
2009
- 2009-01-08 CN CNA2009101148217A patent/CN101457793A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837993A (en) * | 2017-03-06 | 2017-06-13 | 广西汽车集团有限公司 | A kind of chain and its directive wheel |
| CN113290472A (en) * | 2021-06-28 | 2021-08-24 | 李兆伟 | Pre-buried exposing reinforcing bar rust cleaning device of building engineering |
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Open date: 20090617 |