CN102211619A - Thrust wheel with high sealing property - Google Patents
Thrust wheel with high sealing property Download PDFInfo
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- CN102211619A CN102211619A CN 201110121187 CN201110121187A CN102211619A CN 102211619 A CN102211619 A CN 102211619A CN 201110121187 CN201110121187 CN 201110121187 CN 201110121187 A CN201110121187 A CN 201110121187A CN 102211619 A CN102211619 A CN 102211619A
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Abstract
The invention provides a thrust wheel with high sealing property, which relates to engineering machinery. A thrust wheel assembly comprises a thrust wheel body, a thrust wheel shaft, a bimetallic shaft sleeve, left and right shaft bases, an O-shaped sealing ring, a fixed pin, floating sealing components and an oil plug, wherein cavities among two ends of the thrust wheel body and the left and right shaft bases serve as floating sealing cavities; a set of floating sealing components is assembled in each floating sealing cavity; and a sealing mechanism with high sealing property is formed by combining the floating sealing cavities with the floating sealing components after the structure is optimized and improved. In the thrust wheel, the angles and the depths of the floating sealing cavities are increased, so that the elasticity of the floating sealing components along the upwards direction is increased and the floating sealing effect of the floating sealing components in the floating sealing cavities is maintained. A section diameter of a floating sealing rubber ring is increased, a compression permanent deformation rate is reduced, a rebounding force is large, an extruding supporting force to a floating sealing ring is kept, two floating sealing ring bright bands are tightly jointed, the width of the floating sealing ring is increased, the sealing effect is obviously increased, the thrust wheel assembly is at excellent lubricated state, and the whole working life is prolonged. The thrust wheel with high sealing property can be widely applied to all engineering machinery manufacturing enterprises.
Description
Technical field
The present invention relates to the construction machinery and equipment caterpillar wheel, especially a kind of caterpillar wheel assembly of high sealing performance.
Background technology
Caterpillar wheel is the vitals of tracked construction equipment load-bearing and guiding.The caterpillar wheel assembly is made up of caterpillar wheel body, supporting wheel shaft, bimetallic bush, left and right sides axle bed, O RunddichtringO, set pin, floating seal assembly, plug cock, interior notes hyperbolic gear lubricating oil.Die cavity between caterpillar wheel body and the left and right sides axle bed is floating envelope chamber, and one group of floating seal assembly of each floating indoor assembling of envelope is in order to keep the sealing of lubricating oil between the positions such as supporting wheel shaft and bimetallic bush.In the caterpillar wheel use, leakage of oil is the main form that caterpillar wheel lost efficacy, because oil seepage, will cause lacking between supporting wheel shaft and the bimetallic bush lubricated, heavily loaded dry friction and early failure causes the caterpillar wheel global failure.
There are 3 places at the main position of caterpillar wheel leakage of oil: 1. plug cock and cooperation place, axle bed plug cock hole; 2. the O RunddichtringO place of supporting wheel shaft two ends and left and right sides axle bed; 3. the bright band joint place of two metal floating sealing rings.Directly perceived, the easily solution of last place leakage of oil, the leakage of oil at two places, back all occurs in the floating envelope chamber of caterpillar wheel and the floating seal assembly place of the indoor dress of floating envelope, must transform this two places structure, could improve the caterpillar wheel overall sealing performance, could improve the caterpillar wheel overall work life-span.
Therefore improving the key in caterpillar wheel overall work life-span is to improve the caterpillar wheel overall sealing performance, and raising floating envelope chamber and floating sealing property of sealing the floating seal assembly of indoor dress are the core places in the key issue.Before structure of modification, leakage of oil, sealing effectiveness are good inadequately, and the caterpillar wheel whole service life is shorter.
According to retrieval, domestic do not have the patent application identical with the present invention as yet.
Summary of the invention
At the deficiency of above-mentioned existence, the invention provides and a kind ofly optimize the floating seal unit construction transforming floating envelope cell structure, transform the indoor dress of floating envelope, reach and improve sealing effectiveness, reduce the caterpillar wheel oil spill rate, improve the caterpillar wheel of a kind of high sealing performance in caterpillar wheel service life.
The technical solution adopted for the present invention to solve the technical problems is: as Fig. 1-shown in Figure 5, the caterpillar wheel of this a kind of high sealing performance comprises the caterpillar wheel body, supporting wheel shaft, bimetallic bush, left and right sides axle bed, the O RunddichtringO, set pin, the floating seal assembly, plug cock, press-fit bimetallic bush in the caterpillar wheel body, be bearing on the supporting wheel shaft, supporting wheel shaft is connected by set pin with left and right sides axle bed, left and right sides axle bed is fixed on the bogie frame, die cavity between caterpillar wheel body two ends and the left and right sides axle bed is floating envelope chamber S, each floats and seals the indoor one group of floating seal assembly that is equipped with, when the caterpillar wheel body rotates, supporting wheel shaft and bimetallic bush bearing fit, annotate the hyperbolic gear lubricating oil in the Y chamber, it is characterized in that: the floating envelope chamber S optimization of inside structure of described caterpillar wheel body two ends and left and right sides axle bed is transformed, increase the floating seal assembly upward to elastic force, to float envelope chamber angle D and be increased to 10 ° by 9.5 °, degree of depth A adds greatly 14.3mm by 10.1mm; Described floating seal assembly comprises metal floating sealing ring and two floating sealing circles of two bipyramid faces; Described bipyramid face metal floating sealing ring is optimized transformation and is made floating sealing ring width H add greatly 15.9mm by 11mm; Described floating sealing circle is the O RunddichtringO, optimizes and transforms the diameter of section R increasing that makes the O RunddichtringO, strengthens the amount of compression of O RunddichtringO, and its diameter of section R adds greatly Φ 9.5mm by Φ 7.3mm; Described floating seal assembly,
Each size relationship is E=T+13.1, B=T+15.3, K=T+11 before transforming,
Transforming each size relationship of back is E=T+18.4, B=T+20.1, K=T+16.2,
In the formula: E for floating envelope chamber at the bottom of footpath, T be that O RunddichtringO internal diameter, B are the floating sealing ring external diameter for floating envelope chamber diameter, K, according to the tonnage of caterpillar wheel load-bearing and varying in size of oad, T has 5 specifications by 67.5mm to 129mm; Described floating its material of sealing circle is a nitrile rubber; Floating sealing snare is packed on the bipyramid face of bipyramid face metal floating sealing ring, constitute the floating seal assembly; When caterpillar wheel assembles the floating seal assembly is packed in the floating envelope chamber at caterpillar wheel body two ends, the floating seal assembly is packed in the floating envelope chamber of left and right sides axle bed again, the floating envelope chamber end face distance N of caterpillar wheel body and left and right sides axle bed is 3mm, is fixed by set pin; After finishing by the general assembly of caterpillar wheel assembly process, the floating envelope chamber S that forms between caterpillar wheel body two ends and the left and right sides axle bed and one group of floating seal combination of components of wherein assembling, constitute the sealing mechanism of high sealing performance, the sealing mechanism of two high sealing performances is arranged in the caterpillar wheel assembly, makes caterpillar wheel become a kind of caterpillar wheel of high sealing performance.
The invention has the beneficial effects as follows: after the optimization of the floating envelope of this caterpillar wheel cell structure was transformed, angle of its floating envelope chamber strengthened, and the degree of depth is deepened, make the floating seal assembly both increased upward to elastic force, can remain on the floating envelope effect of floating envelope chamber interior again; After the optimization of floating seal unit construction is transformed, floating sealing ring cross-section enlarged diameter, the nitrile rubber O RunddichtringO of equal performance, the compressive permanent set rate of its generation is little, bounce big, increase the crowded holder power to bipyramid face metal floating sealing ring, the bright band of two metal floating sealing rings is fitted tightly, and sealing property significantly improves, after the width of floating sealing ring strengthens, improve the intensity of floating sealing ring, sealing property further improves again; Structure optimization improved floating envelope chamber and floating seal combination of components constitute the sealing mechanism of high sealing performance, can prevent oil seepage, keep the caterpillar wheel assembly to be in good lubricating status, reduce oil spill rate, improve the caterpillar wheel overall work life-span; The sealing mechanism of the high sealing performance that the present invention constitutes can be used in track carrying wheel, the track adjusting wheel of all size equally.Can extensively promote the use in all engineering machinery chassis manufacturing enterprises.
Description of drawings
Fig. 1 is an integral structure scheme drawing of the present invention.
Among the figure: the metal floating sealing ring, 7.2 of 1-caterpillar wheel body, 2-supporting wheel shaft, 3-bimetallic bush, 4-left and right sides axle bed, 5-O RunddichtringO, 6-set pin, 7-floating seal assembly, 7.1-bipyramid face-floating sealing circle.
Fig. 2 is the F partial enlarged drawing of Fig. 1.S is floating envelope chamber among the figure.
Fig. 3 is floating envelope chamber interior structural representation.
Fig. 4 is the floating sealing ring structural representation.
Fig. 5 is floating sealing coil structures scheme drawing.
The specific embodiment
The invention will be further described to utilize drawings and Examples.
The caterpillar wheel of this a kind of high sealing performance comprises caterpillar wheel body 1, supporting wheel shaft 2, bimetallic bush 3, left and right sides axle bed 4, O RunddichtringO 5, set pin 6, floating seal assembly 7, plug cock, press-fit bimetallic bush 3 in the caterpillar wheel body 1, be bearing on the supporting wheel shaft 2, supporting wheel shaft 2 is connected by set pin 6 with left and right sides axle bed 4, left and right sides axle bed 4 is fixed on the bogie frame, die cavity between caterpillar wheel body 1 two ends and the left and right sides axle bed 4 is floating envelope chamber S, each floats and seals the indoor one group of floating seal assembly 7 that is equipped with, when caterpillar wheel body 1 rotates, supporting wheel shaft 2 and bimetallic bush 3 bearing fits, annotate the hyperbolic gear lubricating oil in the Y chamber, it is characterized in that: the floating envelope chamber S optimization of inside structure of described caterpillar wheel body 1 two ends and left and right sides axle bed 4 is transformed, increase floating seal assembly 7 upward to elastic force, to float envelope chamber angle D and be increased to 10 ° by 9.5 °, degree of depth A adds greatly 14.3mm by 10.1mm; Described floating seal assembly 7 comprises metal floating sealing ring 7.1 and two floating sealing circles 7.2 of two bipyramid faces; Described bipyramid face metal floating sealing ring 7.1 is optimized transformation and is made floating sealing ring width H add greatly 15.9mm by 11mm; Described floating sealing circle 7.2 is the O RunddichtringO, optimizes and transforms the diameter of section R increasing that makes the O RunddichtringO, strengthens the amount of compression of O RunddichtringO, and its diameter of section R adds greatly Φ 9.5mm by Φ 7.3mm; Described floating seal assembly 7,
Each size relationship is E=T+13.1, B=T+15.3, K=T+11 before transforming,
Transforming each size relationship of back is E=T+18.4, B=T+20.1, K=T+16.2,
In the formula: E for floating envelope chamber at the bottom of footpath, T be that O RunddichtringO internal diameter, B are the floating sealing ring external diameter for floating envelope chamber diameter, K, according to the tonnage of caterpillar wheel load-bearing and varying in size of oad, T has 5 specifications by 67.5mm to 129mm; Described floating sealing circle 7.2 its materials are nitrile rubber; Floating sealing circle 7.2 is overlapped on the bipyramid face of the bipyramid face metal floating sealing ring 7.1 of packing into, constitute floating seal assembly 7; When caterpillar wheel assembles floating seal assembly 7 is packed in the floating envelope chamber at caterpillar wheel body 1 two ends, floating seal assembly 7 is packed in the floating envelope chamber of left and right sides axle bed 4 again, caterpillar wheel body 1 is 3mm with the floating envelope chamber end face distance N of left and right sides axle bed 4, and is fixing by set pin 6; After finishing by the general assembly of caterpillar wheel assembly process, floating envelope chamber S that forms between caterpillar wheel body 1 two ends and the left and right sides axle bed 4 and the wherein combination of one group of floating seal assembly 7 of assembling, constitute the sealing mechanism of high sealing performance, the sealing mechanism of two high sealing performances is arranged in the caterpillar wheel assembly, makes caterpillar wheel become a kind of caterpillar wheel of high sealing performance.
The floating seal combination of components of the improved floating envelope of structure optimization of the present invention chamber and the indoor dress of floating envelope, significantly improved sealing mechanism sealing effectiveness, reduce oil spill rate, improve service life, make caterpillar wheel become a kind of caterpillar wheel of high sealing performance.
Table 1 is the dimensional data contrast (mm of unit) of floating envelope chamber interior structure before and after transforming
To float envelope chamber angle D and be increased to 10 ° by 9.5 °, footpath E increases to Φ 121.54mm by Φ 119.15mm at the bottom of the floating envelope chamber, and degree of depth A is added to 14.3mm by 10.1mm.
Table 2 is floating seal unit construction size contrast (mm of unit) before and after transforming
Floating sealing circle Φ T * Φ R is transferred to Φ 102.8 * Φ 9.5mm by Φ 106 * Φ 7.3mm; Floating sealing ring Φ K * H is transferred to Φ 119 * 15.9mm by Φ 117 * 11mm.
With the floating envelope chamber S of NC-machining caterpillar wheel body 1 two ends and left and right sides axle bed 4 terminations, make to reach and transform back A, B, D, E value, make the nitrile rubber O RunddichtringO of metal floating sealing ring 7.1 and floating sealing circle 7.2 reach transformation back K, H, T, R value.Reach the standard grade after the workpiece cleaning, bimetallic bush 3 is pressed into caterpillar wheel body 1, the floating seal assembly 7 that O RunddichtringO 7.2 and bipyramid face metal floating sealing ring 7.1 are assembled into is packed among the floating envelope chamber S at caterpillar wheel body 1 two ends again; Floating seal assembly 7 is packed in the left and right sides axle bed 4; The end that supporting wheel shaft 2 has been adorned O RunddichtringO 5 is packed in the left bracket 4, and is pressed into set pin 6; Above-mentioned supporting wheel shaft assembly is penetrated in the caterpillar wheel body 1, at the other end of the supporting wheel shaft 2 O RunddichtringO 5 of packing into; Right axle seat 4 is pressed into the right-hand member of supporting wheel shaft 2, and is pressed into set pin 6, guarantee that by set pin 6 the caterpillar wheel body 1 and the floating envelope chamber end face distance N of left and right sides axle bed 4 are 3mm; On left and right sides axle bed 4, load onto plug cock.The caterpillar wheel assembly that assembling is finished is through running-in forward and backward 15 circles, allow cushion rubber reset, again the caterpillar wheel assembly is immersed in the water, the plug cock mouth surfaces, by plug cock mouth injection pressure is the 0.5Mpa compressed gas, screwing in the plug cock 25S water does not have bubble, and air tight test, tightness test is qualified, vacuumizes to inject the hyperbolic gear lubricating oil again.
Before floating envelope chamber S and floating seal assembly 7 structure optimizations transformation, its caterpillar wheel running-in test leakage of oil in 330 hours was amounted to the car load real work 2300 hours.
After floating envelope chamber S and floating seal assembly 7 structure optimizations transformation, its caterpillar wheel running-in test not leakage of oil in 450 hours was amounted to the car load real work 3300 hours.
Modern R225L-7 excavating machine the caterpillar wheel that our company produces, (floating envelope chamber and floating seal unit construction are transformed preceding) caterpillar wheel oil spill rate was 2.4% in 2008, after the transformation, caterpillar wheel oil spill rate in 2009 is that 0.18%, 2010 year caterpillar wheel product obtains the outstanding quality bonus of modern times (Jiangsu) construction machinery and equipment Co., Ltd.Our company obtains the outstanding supplier of permanent extra heavy worker honor.
Digital proof: the improved floating envelope of structure optimization of the present invention chamber significantly improves, reduces oil spill rate, guarantees that the caterpillar wheel assembly is in good lubricating status with the floating seal combination of components of the indoor dress of floating envelope, its sealing property of sealing mechanism of formation, improve caterpillar wheel service life, make caterpillar wheel become a kind of caterpillar wheel of high sealing performance.
Claims (1)
1. the caterpillar wheel of a high sealing performance, the caterpillar wheel of this a kind of high sealing performance comprises caterpillar wheel body (1), supporting wheel shaft (2), bimetallic bush (3), left and right sides axle bed (4), O RunddichtringO (5), set pin (6), floating seal assembly (7), plug cock, press-fit bimetallic bush (3) in the caterpillar wheel body (1), be bearing on the supporting wheel shaft (2), supporting wheel shaft (2) is connected by set pin (6) with left and right sides axle bed (4), left and right sides axle bed (4) is fixed on the bogie frame, die cavity between caterpillar wheel body (1) two ends and the left and right sides axle bed (4) is floating envelope chamber S, the indoor one group of floating seal assembly (7) that is equipped with of each floating envelope, when caterpillar wheel body (1) rotates, supporting wheel shaft (2) and bimetallic bush (3) bearing fit, annotate the hyperbolic gear lubricating oil in the Y chamber, it is characterized in that: the floating envelope chamber S optimization of inside structure of described caterpillar wheel body (1) two ends and left and right sides axle bed (4) is transformed, increase floating seal assembly (7) upward to elastic force, to float envelope chamber angle D and be increased to 10 ° by 9.5 °, degree of depth A adds greatly 14.3mm by 10.1mm; Described floating seal assembly (7) comprises metal floating sealing ring (7.1) and two floating sealing circles (7.2) of two bipyramid faces; Described bipyramid face metal floating sealing ring (7.1) is optimized transformation and is made floating sealing ring width H add greatly 15.9 mm by 11 mm; Described floating sealing circle (7.2) is the O RunddichtringO, optimizes and transforms the diameter of section R increasing that makes the O RunddichtringO, strengthens the amount of compression of O RunddichtringO, and its diameter of section R adds greatly φ 9.5mm by φ 7.3 mm; Described floating seal assembly (7),
Each size relationship is E=T+13.1, B=T+15.3, K=T+11 before transforming,
Transforming each size relationship of back is E=T+18.4, B=T+20.1, K=T+16.2,
In the formula: E for floating envelope chamber at the bottom of footpath, T be that O RunddichtringO internal diameter, B are the floating sealing ring external diameter for floating envelope chamber diameter, K, according to the tonnage of caterpillar wheel load-bearing and varying in size of oad, T has 5 specifications by 67.5mm to 129mm; Its material of described floating sealing circle (7.2) is a nitrile rubber; Floating sealing circle (7.2) is overlapped on the bipyramid face of the bipyramid face metal floating sealing ring (7.1) of packing into, constitute floating seal assembly (7); When caterpillar wheel assembles, floating seal assembly (7) is packed in the floating envelope chamber at caterpillar wheel body (1) two ends, again floating seal assembly (7) is packed in the floating envelope chamber of left and right sides axle bed (4), caterpillar wheel body (1) is 3mm with the floating envelope chamber end face distance N of left and right sides axle bed (4), and is fixing by set pin (6); After finishing by the general assembly of caterpillar wheel assembly process, floating envelope chamber S that forms between caterpillar wheel body (1) two ends and the left and right sides axle bed (4) and the wherein combination of one group of floating seal assembly (7) of assembling, constitute the sealing mechanism of high sealing performance, the sealing mechanism of two high sealing performances is arranged in the caterpillar wheel assembly, makes caterpillar wheel become a kind of caterpillar wheel of high sealing performance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101211877A CN102211619B (en) | 2011-05-11 | 2011-05-11 | Thrust wheel with high sealing property |
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| CN2011101211877A CN102211619B (en) | 2011-05-11 | 2011-05-11 | Thrust wheel with high sealing property |
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| CN102211619A true CN102211619A (en) | 2011-10-12 |
| CN102211619B CN102211619B (en) | 2012-07-25 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774439A (en) * | 2012-07-25 | 2012-11-14 | 常熟华威履带有限公司 | Supporting wheel and excavator with same |
| CN102951218A (en) * | 2012-12-06 | 2013-03-06 | 中国十七冶集团有限公司 | Easy-to-assemble supporting wheel and track frame |
| CN104149383A (en) * | 2014-07-17 | 2014-11-19 | 安徽和翔机械科技有限公司 | Discharging control mechanism for energy-saving stamping machine |
| 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 |
| CN109404542A (en) * | 2018-12-29 | 2019-03-01 | 中铁工程装备集团有限公司 | A kind of novel shield machine mortar jar bearing seal and encapsulating method |
| CN113682389A (en) * | 2021-09-23 | 2021-11-23 | 三一重机有限公司 | Thrust wheel and engineering machinery |
| CN114110168A (en) * | 2021-11-29 | 2022-03-01 | 徐州徐工履带底盘有限公司 | Matching design method for assembling relation of thrust wheels |
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| US20080141513A1 (en) * | 2006-12-15 | 2008-06-19 | Livesay Richard E | Machine component configuration for enhanced press fit and press fit coupling method |
| CN101723005A (en) * | 2009-12-28 | 2010-06-09 | 杨洪根 | Roller in caterpillar mechanical travelling mechanism |
| CN101797935A (en) * | 2009-12-28 | 2010-08-11 | 杨洪根 | Thrust wheel and guiding wheel in caterpillar mechanical travelling mechanism |
| CN202071912U (en) * | 2011-05-11 | 2011-12-14 | 湖北省三胜工程机械有限公司 | Track roller with high sealing performance |
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2011
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| US3985366A (en) * | 1975-10-06 | 1976-10-12 | Caterpillar Tractor Co. | Duo-cone seal flexible mounting |
| DE3141512C2 (en) * | 1981-10-20 | 1983-12-08 | Goetze Ag, 5093 Burscheid | Mechanical seal |
| CN1817716A (en) * | 2005-02-11 | 2006-08-16 | 卡特彼勒公司 | Work machine track roller assembly |
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| CN101797935A (en) * | 2009-12-28 | 2010-08-11 | 杨洪根 | Thrust wheel and guiding wheel in caterpillar mechanical travelling mechanism |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774439A (en) * | 2012-07-25 | 2012-11-14 | 常熟华威履带有限公司 | Supporting wheel and excavator with same |
| CN102951218A (en) * | 2012-12-06 | 2013-03-06 | 中国十七冶集团有限公司 | Easy-to-assemble supporting wheel and track frame |
| CN102951218B (en) * | 2012-12-06 | 2015-05-20 | 中国十七冶集团有限公司 | Easy-to-assemble supporting wheel and track frame |
| CN104149383A (en) * | 2014-07-17 | 2014-11-19 | 安徽和翔机械科技有限公司 | Discharging control mechanism for energy-saving stamping machine |
| 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 |
| CN109404542A (en) * | 2018-12-29 | 2019-03-01 | 中铁工程装备集团有限公司 | A kind of novel shield machine mortar jar bearing seal and encapsulating method |
| CN113682389A (en) * | 2021-09-23 | 2021-11-23 | 三一重机有限公司 | Thrust wheel and engineering machinery |
| CN114110168A (en) * | 2021-11-29 | 2022-03-01 | 徐州徐工履带底盘有限公司 | Matching design method for assembling relation of thrust wheels |
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|---|---|
| CN102211619B (en) | 2012-07-25 |
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Granted publication date: 20120725 Termination date: 20140511 |