CN101723005A - Roller in caterpillar mechanical travelling mechanism - Google Patents
Roller in caterpillar mechanical travelling mechanism Download PDFInfo
- Publication number
- CN101723005A CN101723005A CN200910266877A CN200910266877A CN101723005A CN 101723005 A CN101723005 A CN 101723005A CN 200910266877 A CN200910266877 A CN 200910266877A CN 200910266877 A CN200910266877 A CN 200910266877A CN 101723005 A CN101723005 A CN 101723005A
- Authority
- CN
- China
- Prior art keywords
- roller
- axle sleeve
- roller shaft
- roller body
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Rollers For Roller Conveyors For Transfer (AREA)
Abstract
The invention discloses a roller in a caterpillar mechanical travelling mechanism, which comprises a roller shaft (1), and a roller body (2) sleeved on the roller shaft (1). A shaft sleeve (3) with a bearing bush is arranged between the roller body (2) and the roller shaft. The roller is characterized in that: the shaft sleeve with the bearing bush is closely fitted and fixed with the roller body on the outer side. After the roller body is subjected to half-body finish machining, the shaft sleeve with the bearing bush is directly closely fitted and fixed with the roller body; and then the roller is welded for forming after the roller shaft is assembled, thereby canceling the machining on an iron sleeve, the roller body and a screwed hole of the iron sleeve, simplifying the structure of the roller in caterpillar mechanical chassis parts, increasing the assembly efficiency, reducing the cost, improving the product quality, and enhancing the production efficiency. The roller can be applied in the chassis parts of small and medium-sized engineering machinery, construction machinery, small and medium-sized agricultural machinery and small and medium-sized special machinery.
Description
Technical field
The invention belongs to the caterpillar machinery chassis member design field in the technical field of engineering machinery,
Be specifically related to the roller in a kind of caterpillar mechanical travelling mechanism.
Background technology
The tracked construction equipment running gear is divided into the track unit of track unit that caterpillar wheel is arranged and no caterpillar wheel according to having or not of caterpillar wheel.Because be mainly cliding friction during the walking of the track unit of no caterpillar wheel, it is comparatively serious to wear and tear, field of application is less.There is the track unit of caterpillar wheel mainly to form, i.e. crawler belt, drive wheel, roller, track carrying wheel and tightening device, track frame etc. by " four-wheel one band ".Drive wheel produces relay in pilled-in selvedge, driving section and the ground connection section of crawler belt during operation, owing between crawler belt under the caterpillar wheel and ground enough adhesive ability is arranged, stop pulling out of crawler belt, force drive wheel scrolling crawler belt, track adjusting wheel is routed to crawler belt on the ground again, thereby makes tracked construction equipment borrow the load-bearing of caterpillar wheel along caterpillar chain rail ahead running.Article two, crawler belt is driven by different actuating device (as fluid pressure drive device) respectively, realizes turning on the spot when the actuating device driving direction is opposite; When only a side drive device drives, realize turning to around a side crawler belt.Roller has caterpillar wheel, guide wheel etc. in the tracked construction equipment running gear.
The tracked construction equipment running gear is because bearing surface area is big, ground connection is littler than the Asia, the traction adhesion value is good, and being difficult for skidding is that other running gears can not be compared; In a lot of industries application is arranged all.Because its friction force is a friction of rolling when having the track unit of caterpillar wheel to walk, friction force is little, so its duty ratio is bigger, can apply to the walking of big machinery and equipment.Caterpillar wheel is the weight that is used for supporting caterpillar machinery, and rolls on the chain rail of crawler belt, and machinery is travelled along the chain rail, and it also is used for the clamping crawler belt, makes it not along laterally slippage, and forces crawler belt slippage on the ground when turning.Caterpillar wheel is everlasting and is worked in the muddy water dust, and bears intense impact, and service conditions is very poor, requires therefore that its sealing is reliable, roller body is wear-resisting.
The keystone configuration of roller comprises that associated components such as roller body, roller shaft, iron cover, first seal ring, second seal ring, roller shaft exterior and interior cover constitute.The general 40Mn2 of roller body material, etc. material, main technique casting or forge, machine up is heat-treated then, the hardness after wheel surface is quenched will reach about HRC52, to increase the resistance to abrasion of wheel surface.The requirement on machining accuracy of roller shaft generally is to need numerically-controlled machine tool to process just can reach requirement than higher.Material is more with 45, also will carry out quenching heat treatment after the processing, and hardness reaches about HRC54.Roller can be divided into monolateral roller and bilateral roller; Excavating machine is with roller and bulldozer roller.
Fig. 1 is common monolateral roller, and the iron cover of fixing with roller body 2 is set in the sheathed roller body 2 in roller shaft 1 outside of this roller, described roller body endoporus, thereby described iron cover is by fixing axial limiting roller body and iron covers with the roller body bolt 8 in the outside.In order to lock roller body and iron cover, when bolt connected, pad was established pad 9 on the bolt.The sheathed inside and outside lid 5,6 of roller of captiveing joint with the iron cover in described roller shaft both sides, inside and outside lid 5,6 of described roller and iron inner room are provided with float grease seal 61 sealings.Described roller shaft 1 two ends are provided with side grain, and trapezoidal groove is set on one of them, are provided with in the described trapezoidal groove and prevent the axially movable flat key of roller shaft.Inside and outside lid 4,5 of roller and 1 of roller shaft are provided with an O RunddichtringO 62 sealings; Roller body and iron inner room are provided with 63 sealings of the 2nd O RunddichtringO.Wherein between iron cover and roller shaft lining is set.Common roller adopts the iron cover with roller body endoporus close-fitting and by bolt in caterpillar machinery chassis member, can limit the axial string momentum of roller shaft like this, yet such structure packaging efficiency is low, and it is many to take up room, and cost is than higher.The present invention comes therefrom.
Summary of the invention
Problems such as the object of the invention is to provide the roller in a kind of caterpillar mechanical travelling mechanism, and it is low to have solved roller packaging efficiency of the prior art, and it is many to take up room, and cost is higher.
In order to solve these problems of the prior art, technical scheme provided by the invention is:
Roller in a kind of caterpillar mechanical travelling mechanism comprises roller shaft and is set in roller body on the roller shaft, and the axle sleeve of band bearing shell is set between described roller body and roller shaft, it is characterized in that the axle sleeve of described band bearing shell and the roller body close-fitting in the outside fix.
Preferably, the axle sleeve of described band bearing shell is a bimetallic bush, and described axle sleeve outer ring and roller body close-fitting are fixed into one.
Preferably, described roller body is the symmetrical left and right roller body halfbody that is set on the roller shaft, and described left and right roller body halfbody is provided with in opposite directions, and welding is fixing between described left and right roller body halfbody.
Preferably, be provided with in the described wheel body halfbody endoporus that rolls left and the fixing left axle sleeve of wheel body halfbody close-fitting that rolls left; Be provided with in the described right roller body halfbody endoporus and the fixing right axle sleeve of right roller body halfbody close-fitting.
Preferably, described roller shaft is middle salient shoulder type step axle, and sheathed roller body on the convex shoulder of described roller shaft is provided with the axle sleeve of being with bearing shell between described roller shaft convex shoulder and roller body.
Preferably, the inside and outside lid of the sheathed roller in described roller shaft convex shoulder both sides, inside and outside lid of described roller and shaft room are provided with the float grease seal sealing, and the inside and outside lid of described roller is captiveed joint with axle sleeve.
Preferably, described roller shaft two ends are provided with side grain, and described roller shaft one end is provided with the filling oilhole and the plug cock of input lubricating oil.Certainly, on one of roller shaft side grain trapezoidal groove is set therein, is provided with in the described trapezoidal groove and prevents the axially movable flat key of roller shaft.
Preferably, O RunddichtringO sealing is set between inside and outside lid of described roller and roller shaft.
Preferably, between the axle sleeve of described band bearing shell and roller shaft lining is set, described lining and roller shaft free-running fit.
Preferably, described roller is selected from caterpillar wheel or guide wheel.
Guide wheel in the caterpillar mechanical travelling mechanism of the present invention or caterpillar wheel, comprise roller shaft and the roller body that is set on the roller shaft, the axle sleeve of band bearing shell is set between described roller body and roller shaft, it is characterized in that the axle sleeve of described band bearing shell and the roller body close-fitting in the outside fix.
Technical solution of the present invention bottom bracket axle assembly bottom bracket axle can be the composite metal cover, also can be copper sheathing, and bearing shell is to roll to form after the structure of the similar copper alloy of metal sheet surface sintering.Roller of the present invention is symmetrical arranged when using on caterpillar machinery, can be monolateral roller, also can be bilateral roller; In the axle sleeve arranged outside float grease seal sealing of roller, can prevent that the lubricating oil that silt enters or axle sleeve is interior from leaking; Side grain is made at the roller shaft two ends, can guarantee that roller shaft does not rotate.End at roller shaft is provided with the filling oilhole, can inject lubricating oil through this hole, with lubricative axle sleeve; When roller rolled on the caterpillar chain rail, roller body, axle sleeve rotated with respect to roller shaft, and machinery is travelled along the chain rail.
With respect to scheme of the prior art, advantage of the present invention is:
1. adopt axle sleeve and the direct close-fitting of roller body endoporus to fix in the technical solution of the present invention, axial play can not take place in axle sleeve and roller body like this, and owing in the axle sleeve bearing shell is set, roller shaft feasible and that the bearing shell inner ring is fixing can end float misalignment.After this employing wheel body endoporus press-fits bearing shell, the direct technical scheme spacing to axle, cancelled the iron nested structure of using always in the prior art, cancelled the bolt of iron nested structure and roller body, the processing of roller body upper screwed hole and the processing of iron cover upper bolt hole have been cancelled, the work efficiency when having improved processing roller body and shaft sleeve parts.
2, the assembling of technical solution of the present invention roller the time can will directly press-fit axle sleeve bearing shell and roller shaft behind the roller body halfbody fine limit work, and contact wheel body halfbody again assembles more conveniently like this, and the packaging efficiency when having improved the roller assembling has improved assembling quality; And weld time select for use again two wheel body halfbodies being welded after by interference fit behind the roller body halfbody fine limit work and after press-fiting axle sleeve and roller shaft, guaranteed after-welding precision.The present invention is owing to cancelled screw fixation method, and the problem of screw thread centering in assembling process and not locking can be avoided fully, thus efficient, the stable and reliable product quality of roller of the present invention assembling.
3, press-fit axle sleeve by roller body endoporus inner end surface in the optimal technical scheme of the present invention after, directly the pair roller axle is spacing behind the bearing shell, the structure that does not need the iron cover, cancel the bolt that two iron covers and bolt are used like this, simplified the roller integral structure, reduced the roller number of components and parts, reduced the overhours of roller parts, alleviate the weight of axle sleeve, dwindled the volume of axle sleeve greatly, reduced productive costs and purchase cost.
4, overlap the bolted connection fixed form owing to having cancelled roller body and iron in the optimal technical scheme of the present invention, reduced the accuracy requirement of roller body end face processing, prolonged cutter life.The present invention has also cancelled the second seal ring leak free structure between iron cover and roller body, because roller body and axle sleeve close-fitting are fixed, need not within it, portion seals.
In sum, the present invention is because after adopting roller body halfbody fine limit work, band bearing shell axle sleeve and the direct close-fitting of roller body are fixed, and welding forming behind the assembling roller shaft has been cancelled the iron cover like this, the hole processing of roller body and iron cover, simplify the structure of the roller in the caterpillar machinery chassis spare, improved packaging efficiency, reduced cost, improve the quality of product, enhance productivity.This roller can be applied in the vehicle chassis component of medial and small construction machinery, particularly vehicle for construction, medium and small agricultural machinery and middle-size and small-size special mechanical.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described:
Fig. 1 is a roller structure scheme drawing common in the prior art;
Fig. 2 is the structural representation of embodiment of the invention caterpillar wheel;
Wherein: 1 is roller shaft, and 2 is roller body, and 3 is axle sleeve; 4 is the roller inner cap, and 5 is the roller enclosing cover, and 6 is the iron cover; 7 is lining, and 8 is bolt; 9 is pad; 11 is plug cock; 61 is float grease seal; 62 is an O RunddichtringO.
The specific embodiment
Below in conjunction with specific embodiment such scheme is described further.Should be understood that these embodiment are used to the present invention is described and are not limited to limit the scope of the invention.The implementation condition that adopts among the embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in the normal experiment.
Embodiment as shown in Figure 2, caterpillar wheel in this caterpillar mechanical travelling mechanism, comprise roller shaft 1 and the roller body 2 that is set on the roller shaft 1, the axle sleeve 3 of band bearing shell is set between described roller body 2 and roller shaft, the roller body close-fitting in the axle sleeve of described band bearing shell and the outside is fixed.
The axle sleeve of band bearing shell is a bimetallic bush, and described axle sleeve outer ring and roller body 2 close-fittings are fixed into one, and bearing shell is to roll to form after the structure of the similar copper alloy of metal sheet surface sintering.
Roller body is the symmetrical left and right roller body halfbody that is set on the roller shaft 1, and described left and right roller body halfbody is provided with in opposite directions, and welding is fixing between described left and right roller body halfbody.Be provided with in the described wheel body halfbody endoporus that rolls left and the fixing left axle sleeve of wheel body halfbody close-fitting that rolls left; Be provided with in the described right roller body halfbody endoporus and the fixing right axle sleeve of right roller body halfbody close-fitting.
Roller shaft is middle salient shoulder type step axle, and sheathed roller body 2 on the convex shoulder of described roller shaft is provided with the axle sleeve 3 of being with bearing shell between described roller shaft convex shoulder and roller body.The inside and outside lid 4,5 of the sheathed roller in described roller shaft convex shoulder both sides, inside and outside lid 4,5 of described roller and 3 on axle sleeve are provided with float grease seal 61 sealings, and the inside and outside lid 4,5 of described roller is captiveed joint with axle sleeve 3.Described roller shaft 1 two ends are provided with side grain.Described roller shaft 1 one ends are provided with the filling oilhole and the plug cock 11 of input lubricating oil.
Inside and outside lid 4,5 of roller and 1 of roller shaft are provided with an O RunddichtringO 62 sealings.Lining 7 is set, described lining 7 and roller shaft free-running fit between the axle sleeve of described band bearing shell and roller shaft.
When using, in order to make crawler doer ground pressure rectangular distribution, the number of roller approximates the caterpillar block number of crawler belt supporting zone.When bulldozer runs into outstanding obstacle, can produce axial power.For fear of the play of roller shaft in such cases, roller shaft is arranged to salient shoulder type step axle, and can be according to the size of the size design convex shoulder of this axial force.
Present embodiment is behind roller body halfbody fine limit work, because roller body and axle sleeve close-fitting are fixed, welding forming behind the assembling roller shaft, cancelled the iron cover like this, the hole processing of roller body and iron cover directly adopts the end float misalignment of bearing shell limited roller axle, has simplified the structure of the roller in the caterpillar machinery chassis spare, alleviate roller weight greatly, reduced productive costs; The bolt structure of roller body and iron cover is used in cancellation in addition, has reduced in roller body and the iron cover course of processing and has carried out the hole processing operation, greatly reduces the time and the cost of these parts of processing, has improved packaging efficiency and has improved product design.
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. the roller in the caterpillar mechanical travelling mechanism, comprise roller shaft (1) and be set in roller body (2) on the roller shaft (1), the axle sleeve (3) of band bearing shell is set between described roller body (2) and roller shaft, it is characterized in that the axle sleeve of described band bearing shell and the roller body close-fitting in the outside fix.
2. the roller structure in the caterpillar mechanical travelling mechanism according to claim 1, the axle sleeve that it is characterized in that described band bearing shell is a bimetallic bush, described axle sleeve outer ring and roller body (2) close-fitting is fixed into one.
3. the roller in the caterpillar mechanical travelling mechanism according to claim 1, it is characterized in that described roller body is that symmetry is set in the left and right roller body halfbody on the roller shaft (1), described left and right roller body halfbody is provided with in opposite directions, and welding is fixing between described left and right roller body halfbody.
4. the roller in the caterpillar mechanical travelling mechanism according to claim 3 is characterized in that being provided with in the described wheel body halfbody endoporus that rolls left and the fixing left axle sleeve of wheel body halfbody close-fitting that rolls left; Be provided with in the described right roller body halfbody endoporus and the fixing right axle sleeve of right roller body halfbody close-fitting.
5. the roller in the caterpillar mechanical travelling mechanism according to claim 3, it is characterized in that described roller shaft is middle salient shoulder type step axle, sheathed roller body (2) on the convex shoulder of described roller shaft is provided with the axle sleeve (3) of being with bearing shell between described roller shaft convex shoulder and roller body.
6. the roller in the caterpillar mechanical travelling mechanism according to claim 5, it is characterized in that the inside and outside lid of the sheathed roller in described roller shaft convex shoulder both sides (4,5), float grease seal (61) sealing is set between inside and outside lid of described roller (4,5) and axle sleeve (3), and the inside and outside lid of described roller (4,5) is captiveed joint with axle sleeve (3).
7. the roller in the caterpillar mechanical travelling mechanism according to claim 5 is characterized in that described roller shaft (1) two ends are provided with side grain; Described roller shaft (1) one end is provided with the filling oilhole and the plug cock (11) of input lubricating oil.
8. the roller in the caterpillar mechanical travelling mechanism according to claim 5 is characterized in that being provided with between inside and outside lid of described roller (4,5) and roller shaft (1) an O RunddichtringO (62) sealing.
9. the roller in the caterpillar mechanical travelling mechanism according to claim 1 is characterized in that between the axle sleeve of described band bearing shell and roller shaft lining (7) being set described lining (7) and roller shaft free-running fit.
10. the roller in the caterpillar mechanical travelling mechanism according to claim 1 is characterized in that described roller is selected from caterpillar wheel or guide wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910266877A CN101723005A (en) | 2009-12-28 | 2009-12-28 | Roller in caterpillar mechanical travelling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910266877A CN101723005A (en) | 2009-12-28 | 2009-12-28 | Roller in caterpillar mechanical travelling mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101723005A true CN101723005A (en) | 2010-06-09 |
Family
ID=42444713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910266877A Pending CN101723005A (en) | 2009-12-28 | 2009-12-28 | Roller in caterpillar mechanical travelling mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101723005A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211619A (en) * | 2011-05-11 | 2011-10-12 | 湖北省三胜工程机械有限公司 | Thrust wheel with high sealing property |
| CN106321656A (en) * | 2016-08-31 | 2017-01-11 | 苏州哥特机械有限公司 | Agricultural machine wheel hub unit |
| CN107745754A (en) * | 2017-11-09 | 2018-03-02 | 徐工集团工程机械有限公司 | High reliability wheel design and excavator |
-
2009
- 2009-12-28 CN CN200910266877A patent/CN101723005A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211619A (en) * | 2011-05-11 | 2011-10-12 | 湖北省三胜工程机械有限公司 | Thrust wheel with high sealing property |
| CN102211619B (en) * | 2011-05-11 | 2012-07-25 | 湖北省三胜工程机械有限公司 | Thrust wheel with high sealing property |
| CN106321656A (en) * | 2016-08-31 | 2017-01-11 | 苏州哥特机械有限公司 | Agricultural machine wheel hub unit |
| CN107745754A (en) * | 2017-11-09 | 2018-03-02 | 徐工集团工程机械有限公司 | High reliability wheel design and excavator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101723006B (en) | Dual-bushing track chain cartridge | |
| US7108337B2 (en) | Roller for a crawler type traveling vehicle | |
| US6012784A (en) | Impact reducing idler wheel for a track-driven machine | |
| EP0820917B1 (en) | Guide roller assembly for crawler type vehicles and method for forming guide roller | |
| WO2012073956A1 (en) | Caterpillar track bush and caterpillar link device | |
| US6364438B1 (en) | Press fit roller assemblies of an undercarriage assembly of a work machine and method of making the same | |
| CN101746425A (en) | Thrust wheel and guide wheel of crawler type mechanical travelling mechanism | |
| US5553931A (en) | Track roller assembly | |
| CN102282061A (en) | Idler and undercarriage assembly for track-type machine | |
| US6457786B1 (en) | Roller assembly of an undercarriage assembly having an integrated retainer and thrust bushing and method for making the same | |
| CN102887179A (en) | Tracklaying gear | |
| EP3297898B1 (en) | Chain assembly having a retention feature | |
| CN101723005A (en) | Roller in caterpillar mechanical travelling mechanism | |
| ITMI940279U1 (en) | TRUCK TROLLEY IN PARTICULAR FOR SMALL EXCAVATORS | |
| CN101797935A (en) | Thrust wheel and guiding wheel in caterpillar mechanical travelling mechanism | |
| WO2018111496A1 (en) | Bushing for track assembly | |
| CN201573715U (en) | Roller of caterpillar machine running mechanism | |
| CN201646919U (en) | Track roller and guide wheel of tracked mechanical traveling mechanism | |
| CN201580462U (en) | Supporting wheel and guide wheel of crawler-type mechanical traveling mechanism | |
| CN201357881Y (en) | End surface sealed bearing as well as bearing wheel, drag chain wheel and guiding wheel provided with the same | |
| CN208546491U (en) | A kind of heavy load vehicle motor driven hub reduction gear | |
| EP3470705B1 (en) | Vehicular differential device and welding method for the same | |
| CN204210603U (en) | Caterpillar wheel in digging machine walking mechanism | |
| US6422664B1 (en) | Carrier roller assembly of an undercarriage assembly of a work machine having a roller shaft with integrated thurst surfaces | |
| CN202251951U (en) | Sealing structure of floating seal cover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100609 |