CN203473043U - Supporting wheel - Google Patents
Supporting wheel Download PDFInfo
- Publication number
- CN203473043U CN203473043U CN201320486618.4U CN201320486618U CN203473043U CN 203473043 U CN203473043 U CN 203473043U CN 201320486618 U CN201320486618 U CN 201320486618U CN 203473043 U CN203473043 U CN 203473043U
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- CN
- China
- Prior art keywords
- bearing
- caterpillar wheel
- nut
- end cap
- caterpillar
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Abstract
The utility model discloses a supporting wheel. The supporting wheel comprises a supporting wheel body, a wheel axle arranged in the weight supporting body, a left end cover and a right end cover, wherein the left end cover and the right end cover are arranged on the wheel axle and abut against the supporting wheel body, bearings are arranged between the supporting wheel body and the wheel axle, and muddy water oil seals are arranged between the supporting wheel body and the left end cover and between the supporting wheel body and the right end cover respectively. The supporting wheel further comprises a bearing pre-tightening mechanism. The bearings of the supporting wheel are installed in a back-to-back paired mode, bearing force is large, and service life is long; due to the fact that the muddy water oil seals are used, mud, dust and muddy water can be effectively blocked from entering, fault rate and maintenance rate are reduced, and the service life of the bearings is prolonged.
Description
Technical field
The utility model belongs to mechanical field, relates to a kind of caterpillar wheel of caterpillar chassis running gear.
Background technology
Caterpillar wheel is a kind of in four-wheel one band in the crawlers body such as excavating machine, bulldozer, and its Main Function is the weight that supports excavating machine, bulldozer, allows crawler belt advance along wheel.
Caterpillar wheel adopts at inner charging-up lubricant oil, to meet its normal need of work, and guarantees its service life.This just requires caterpillar wheel to have good leak tightness, can not occur oil leakage phenomenon.Therefore caterpillar wheel arranges float grease seal conventionally, but when caterpillar wheel cleaning inside degree declines, internal lubrication oil is mixed with impurity, not only can aggravate the relative wear of INT COMP, also can cause directly or indirectly float grease seal to damage, then because of leakage of oil, develop into the ultimate failure fault of caterpillar wheel simultaneously.At present, the oil leakage phenomenon occurrence frequency of domestic caterpillar wheel is high, has become the maximum reason of malfunction and failure.
Conventional bogie wheel comprises wheel body and wheel shaft, between wheel body and wheel shaft, by bearing shell, forms sliding bearing structure; Bearing adopts face-to-face and installs: manufacture loaded down with trivial details, easily leakage of oil, load-carrying capacity is poor.
Bearing, in fitting process, in order to make bearing movable steady, reduces the vibration of rotatable parts, improves the life-span that bearing uses, and the running accuracy that improves movable parts, generally all will carry out pretension to the axial force of bearing.Excessive predetermincd tension can be destroyed the oil film between bearing roller, and reduces the service life of bearing; Too small predetermincd tension, can make effective contact wire of bearing reduce, and causes the stress of contact part excessive, and under impact load, can make bearing roller partly be out of shape, and has also directly reduced the service life of bearing.
Utility model content
The purpose of this utility model is to provide a kind of high sealing performance, not easy oil leakage, long-lived caterpillar wheel.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of caterpillar wheel, comprise caterpillar wheel body and be arranged at wheel shaft in described caterpillar wheel body, be arranged on described wheel shaft and be held in left end cap and the right end cap of described caterpillar wheel body, between described caterpillar wheel body and described wheel shaft, bearing is housed, between described caterpillar wheel body and described left end cap and between described caterpillar wheel body and described right end cap, be respectively equipped with muddy water oil sealing, also comprise bearing pre-tightened mechanism.
As preferably, described bearing pre-tightened mechanism comprises the recessed nut of bias near bearing; The recessed nut opposite side of described bias is provided with the eccentric knurled nut matching.
As preferably, described bearing pre-tightened mechanism comprises the recessed nut of bias near bearing; The recessed nut opposite side of described bias is provided with eccentric knurled nut, and described eccentric knurled nut is located at the inner side of described left end cap, and is integral with described left end cap.
As preferably, described bearing pre-tightened mechanism comprises the recessed nut of bias near bearing; The recessed nut opposite side of described bias is provided with eccentric knurled nut, and described eccentric knurled nut is located at the inner side of described right end cap, and is integral with described right end cap.
As preferably, described bearing pre-tightened mechanism comprises circular nut, and described wheel shaft is provided with keyway, and in described keyway, card has locked spacer.
As preferably, described bearing is cylindrical roller bearing.
As preferably, described bearing is double-row conical bearing.
As preferably, described bearing is ball-bearing casing.
As preferably, described bearing adopts " dos-à-dos " mode mounted in pairs.
Compared with prior art, the utility model can reach following good effect: the utility model is used muddy water oil sealing to replace float grease seal, in use, enter, make earth inlet and chance that muddy water oil sealing can effectively block mud, dust and muddy water greatly reduce, reduce fault rate and maintenance rate, improved caterpillar wheel sealing property and service life.In addition, adopt tapered roller bearing in the utility model caterpillar wheel, bearing capacity is large, long service life; Bearing adopts " dos-à-dos " mounting means, and use multiple different bearing pre-tightened mechanism to regulate the rigidity of bearing, make fully contacting of roller and roller surface, the adaptive faculty of raising to high capacity and HI high impact low speed operating mode, bearing movable is steady, the vibration of rotatable parts reduces, and improves the running accuracy of movable parts, improves the life-span that bearing uses; And then the service life of having improved caterpillar wheel.
Accompanying drawing explanation
Fig. 1 is the structural representation of the caterpillar wheel that provides of the utility model embodiment mono-;
Fig. 2 is the structural representation of the caterpillar wheel that provides of the utility model embodiment bis-;
Fig. 3 is the structural representation of the caterpillar wheel that provides of the utility model embodiment tri-;
Fig. 4 is the structural representation of the caterpillar wheel that provides of the utility model embodiment tetra-.
Shown in figure: 1-caterpillar wheel body, 2-wheel shaft, 3-right end cap, 4-left end cap, 5-bearing, 61-float grease seal, 62-muddy water oil sealing, 7-locating dowel pin, 8-O RunddichtringO, the eccentric knurled nut of 101-, the eccentric recessed nut of 102-, 103-circular nut, 11-locked spacer, 12-oiling stopple.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail:
Embodiment mono-:
Please refer to Fig. 1, a kind of caterpillar wheel, comprises caterpillar wheel body 1 and is arranged at the wheel shaft 2 in described caterpillar wheel body 1, described caterpillar wheel body 1 top is provided with oil hole (scheming not shown), oil hole is provided with oiling stopple 12, opens oiling stopple 12, can inject lubricating oil to oil hole.Between described caterpillar wheel body 1 and described wheel shaft 2, be provided with O RunddichtringO 8, form primary seal.Also comprise the left end cap 4 and the right end cap 3 that are arranged on described wheel shaft 2 and are held in described caterpillar wheel body 1, respectively that left end cap 4 and right end cap 3 is fixing with wheel shaft 2 by locating dowel pin 7.Between described caterpillar wheel body 1 and described wheel shaft 2, bearing 5 is housed, bearing 5 can be tapered roller bearing, double-row conical bearing, ball-bearing casing.Bearing 5 adopts " dos-à-dos " mode mounted in pairs, that is: two bearing 5 inner ring light sections are installed relatively.During " back-to-back " mounted in pairs, load center is outside bearing axis; Between intersection point, span is larger, and jib-length is less, therefore cantilever end rigidity is larger, when axle is subject to thermal elongation, bearing clearance increases, and bearing can stuckly not destroy.Between described caterpillar wheel body 1 and described left end cap 4 and described caterpillar wheel body 1 and described right end cap 3, be respectively equipped with float grease seal 61.
This caterpillar wheel also comprises bearing pre-tightened mechanism, for bearing 5 pretensions, adopt multiple different firmly beforehand means to regulate the rigidity of bearing 5, make fully contacting of roller and roller surface, improve the adaptive faculty of caterpillar wheel to high capacity and HI high impact low speed operating mode, thus the optimum useful life that bearing reaches.
A kind of firmly beforehand means wherein: described bearing pre-tightened mechanism comprises the recessed nut 102 of bias near bearing 5, for bearing 5 pretensions; Recessed nut 102 opposite sides of described bias are provided with the eccentric knurled nut 101 matching, loosening for preventing eccentric recessed nut 102.This firmly beforehand means can guarantee that caterpillar wheel has failure-free pretension under HI high impact, stablizes the predetermincd tension of wheel shaft 2, reaches and extends the bearing object in service life.In addition, can also bearing pre-tightened mechanism be set in bearing 5 one sides, also can bearing pre-tightened mechanism be all set the left and right sides.
Embodiment bis-:
Embodiment bis-is only from the different of embodiment mono-: please refer to Fig. 2, described bearing pre-tightened mechanism comprises the recessed nut 102 of bias near bearing, for bearing 5 pretensions; Recessed nut 102 opposite sides of described bias are provided with eccentric knurled nut 101, and described eccentric knurled nut 101 is located at the inner side of described left end cap 4, and are integral with described left end cap 4, and described eccentric knurled nut 101 is loosening for preventing the recessed nut 102 of described bias.This scheme, in cost-saving, guarantees that caterpillar wheel has failure-free pretension under HI high impact, and the predetermincd tension of stable bearing 2, reaches the object increasing the service life.
Embodiment tri-:
Embodiment tri-is only with the difference of embodiment mono-, and described bearing pre-tightened mechanism comprises the recessed nut 102 of bias near bearing, for bearing 5 pretensions; Recessed nut 102 opposite sides of described bias are provided with eccentric knurled nut 101, and described eccentric knurled nut 101 is located at the inner side of described right end cap 3, and are integral with described right end cap 3, and described eccentric knurled nut 101 is loosening for preventing the recessed nut 102 of described bias.(it is not shown that this implements illustration)
The recessed nut 102 of bias in above-mentioned three kinds of embodiment adopts and is threaded with eccentric knurled nut 101.
Embodiment tetra-:
Embodiment tetra-is only with the difference of embodiment mono-, please refer to Fig. 3, and described bearing pre-tightened mechanism comprises circular nut 103, and for bearing 5 pretensions, described wheel shaft 2 is provided with keyway, and in described keyway, card has locked spacer 11, loosening for preventing circular nut 103.This structure is a kind of lower-cost structure.
Embodiment five:
Embodiment five is with the difference of embodiment mono-: please refer to Fig. 4, bearing 5 is by circular nut 103 pretensions, and described wheel shaft 2 is provided with keyway, and in described keyway, card has locked spacer 11, loosening for preventing circular nut 103.Described caterpillar wheel body 1 and described left end cap 4, and be respectively equipped with muddy water oil sealing 62 between described caterpillar wheel body 1 and described right end cap 3, for replacing float grease seal 61.In use, enter, make earth inlet and the chance that can effectively block mud, dust and muddy water greatly reduce muddy water oil sealing 62, have reduced fault rate and maintenance rate, have improved caterpillar wheel sealing property, reduce oil spill rate, improve service life.
Those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these change and modification.
Claims (9)
1. a caterpillar wheel, comprise caterpillar wheel body (1) and be arranged at wheel shaft (2) in described caterpillar wheel body (1), be arranged at described caterpillar wheel body (1) was gone up and be held in to described wheel shaft (2) left end cap (4) and right end cap (3), between described caterpillar wheel body (1) and described wheel shaft (2), bearing (5) is housed, it is characterized in that, between described caterpillar wheel body (1) and described left end cap (4) and described caterpillar wheel body (1) and described right end cap (3), be respectively equipped with muddy water oil sealing (62), also comprise bearing pre-tightened mechanism.
2. caterpillar wheel according to claim 1, is characterized in that, described bearing pre-tightened mechanism comprises the recessed nut of bias (102) near bearing (5); The recessed nut of described bias (102) opposite side is provided with the eccentric knurled nut (101) matching.
3. caterpillar wheel according to claim 1, is characterized in that, described bearing pre-tightened mechanism comprises the recessed nut of bias (102) near bearing (5); The recessed nut of described bias (102) opposite side is provided with eccentric knurled nut (101), and described eccentric knurled nut (101) is located at the inner side of described left end cap (4), and is integral with described left end cap (4).
4. caterpillar wheel according to claim 1, is characterized in that, described bearing pre-tightened mechanism comprises the recessed nut of bias (102) near bearing (5); The recessed nut of described bias (102) opposite side is provided with eccentric knurled nut (101), and described eccentric knurled nut (101) is located at the inner side of described right end cap (3), and is integral with described right end cap (3).
5. caterpillar wheel according to claim 1, is characterized in that, described bearing pre-tightened mechanism comprises circular nut (103), and described wheel shaft (2) is provided with keyway, and in described keyway, card has locked spacer (11).
6. caterpillar wheel according to claim 1, is characterized in that, described bearing (5) is cylindrical roller bearing.
7. caterpillar wheel according to claim 1, is characterized in that, described bearing (5) is double-row conical bearing.
8. caterpillar wheel according to claim 1, is characterized in that, described bearing (5) is ball-bearing casing.
9. caterpillar wheel according to claim 1, is characterized in that, described bearing (5) adopts " dos-à-dos " mode mounted in pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320486618.4U CN203473043U (en) | 2013-08-09 | 2013-08-09 | Supporting wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320486618.4U CN203473043U (en) | 2013-08-09 | 2013-08-09 | Supporting wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203473043U true CN203473043U (en) | 2014-03-12 |
Family
ID=50221426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320486618.4U Expired - Lifetime CN203473043U (en) | 2013-08-09 | 2013-08-09 | Supporting wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203473043U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103770854A (en) * | 2013-08-09 | 2014-05-07 | 昆山拓可机械有限公司 | Thrust wheel |
| CN104973155A (en) * | 2014-04-03 | 2015-10-14 | 华丰钢铁锻造厂股份有限公司 | Crawler belt track roller set |
-
2013
- 2013-08-09 CN CN201320486618.4U patent/CN203473043U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103770854A (en) * | 2013-08-09 | 2014-05-07 | 昆山拓可机械有限公司 | Thrust wheel |
| CN104973155A (en) * | 2014-04-03 | 2015-10-14 | 华丰钢铁锻造厂股份有限公司 | Crawler belt track roller set |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140312 |