CN102359039A - Digger teeth of ballast digger chain and manufacturing method thereof - Google Patents
Digger teeth of ballast digger chain and manufacturing method thereof Download PDFInfo
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- CN102359039A CN102359039A CN2011102493334A CN201110249333A CN102359039A CN 102359039 A CN102359039 A CN 102359039A CN 2011102493334 A CN2011102493334 A CN 2011102493334A CN 201110249333 A CN201110249333 A CN 201110249333A CN 102359039 A CN102359039 A CN 102359039A
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- tooth
- wearing layer
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- tooth handle
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Abstract
The invention discloses digger teeth of a ballast digger chain and a manufacturing method thereof. The digger teeth of the ballast digger chain comprise a digger tooth handle and an alloy head, wherein the alloy head is embedded into one end of the digger tooth handle; one end of the digger tooth handle close to the alloy head is provided with a groove along a spiral line; a cladded anti-abrasion layer is formed in the groove; and the digger tooth handle is provided with a cladded annular anti-abrasion layer along the circumferential direction. The digger teeth have the advantages of simple, reasonable, compact and firm structure, avoidance of a plurality of defects in the prior art, high abrasive resistance and long service life.
Description
Technical field
The present invention relates to railway technology, relate in particular to a kind of ballast excavating chain tooth and preparation method thereof.
Background technology
Ballast excavating chain tooth is that the Large-scale Railway roadbed is handled the crucial easy wear member of car; The alloy head composition that this parts mainly comprise the tooth handle and are fixed in tooth pommel portion; Tooth handle and alloy head are with the soldering form fix; Its profile is similar with coal cutting pick, but receives the component limitations size much smaller than coal cutting pick, and environment for use is more abominable complicated.In use; The alloy head at first contacts wearing and tearing in advance with ballast aggregate; But failure mode tooth handle rapid wear often comes off the alloy head or because the wearing and tearing of tooth handle are meticulous whole tooth is come off from take off shovel; Every 3-5 kilometer need be changed tooth one time in the application, has greatly influenced the operating efficiency of roadbed processing car.
Generally speaking, alloy head and tooth handle are pressed into silver brazing or copper brazing or interference and are connected, and in advance solder evenly are applied in the groove of alloy head or the processing of tooth handle during soldering.The tooth handle adopts potassium steel to lean on shock peening to realize wear-resisting or the annular wearing layer in several roads of tooth handle surface cladding only.
Adopt interference to be pressed into connection, in conjunction with insecure, in the impact driving of complicacy, be easy to come off, employing is carried out soldering to solder in advance, restricted by soldering processes, and inner solder fusing comparatively difficulty is prone to form defective.
The tooth handle only relies on shock peening, wear out failure soon in roadbed ballast excavating environment; And the annular wearing layer in several roads of tooth handle surface cladding only comes off under serious impact events easily, is restricting the application life of tooth.
Summary of the invention
The present invention provides a kind of ballast excavating chain tooth, in order to solve defective of the prior art, and the advantage that implementation structure is firm, abrasion resistance is good and the life-span is long.
A kind of ballast excavating chain tooth comprises: tooth handle and be embedded alloy head at tooth handle one end,
Said tooth handle is provided with groove near an end of alloy head along hand of helix, and said flute pitch in twos leaves not to be limit, preferably equidistance; The said groove shapes and the depth be not restriction also, considers the laser melting coating cost, preferably 1-3mm; Be provided with the groove wearing layer in the said groove; Said tooth handle along the circumferential direction is provided with annular wearing layer.Said groove wearing layer and annular wearing layer can adopt the material of intensity greater than the tooth handle, like high-abrasive materials such as rich chromium cast iron or high-vanadium high-speed steels.
Further, the soldering of said alloy head is embedded at tooth handle one end.
Further, said tooth handle position easy to wear along the circumferential direction is provided with annular wearing layer.Intersection like said alloy head and tooth handle along the circumferential direction is provided with annular wearing layer; The reducing place of said tooth handle along the circumferential direction is provided with annular wearing layer; The number of said annular wearing layer is not limit, and can design according to actual condition.
Further, said annular wearing layer height is 1-3mm, width 3-5mm.
Further, said groove wearing layer is concordant with the groove notch.
Further, said groove wearing layer and annular wearing layer obtain through laser melting coating or hot spraying cladding.
Further, said tooth handle is provided with the elastic cylinder pin-and-hole away from an end of alloy head, and said elastic cylinder pin-and-hole is taken off shovel back insertion straight pin and prevented that tooth from coming off when tooth is installed on.
Another order of the present invention is the preparation method who also discloses a kind of above-mentioned ballast excavating chain tooth:
At first, at the tooth handle near an end of alloy head along hand of helix machined grooves (can adopt hot investment casting) to practice thrift cost;
The alloy head is embedded on the tooth handle, saidly is embedded the employing soldering;
Method through laser melting coating or hot spraying cladding in said groove forms the groove wearing layer, and said groove wearing layer thickness is unrestricted, and is preferably concordant with the groove notch;
At last, the method that along the circumferential direction goes up through laser melting coating or hot spraying cladding at said tooth handle position easy to wear forms annular wearing layer, can set a plurality of annular wearing layers according to actual needs.
The invention discloses a kind of ballast excavating chain tooth and preparation method thereof, said ballast excavating chain tooth is simple and reasonable for structure, compact, and its preparation method is science, easy row also, has following several respects advantage compared with prior art:
1, the present invention is owing to distributing at tooth handle outer surface of cone equidistance groove wearing layer and annular wearing layer; Its two interlaced net distribution that is; Improved the abrasion resistance of tooth handle; Because annular wearing layer has effectively been protected the soldering of alloy head, prevent coming off of alloy head simultaneously, improved the tooth life-span.
2, the present invention can reduce the soldering processes difficulty, improves the soldering strength of connection.
3, the present invention has improved the life-span of tooth handle, finally realizes the equivalent life of alloy head and tooth handle, has improved the utilization rate of alloy head, has prolonged the tooth life-span, and then has improved the operating efficiency that whole roadbed is handled car.
The present invention efficiently solves the shortcoming that wears no resistance that the alloy head is prone to come off and improves the tooth handle, can be widely used in roadbed and handle in the quarrel digger chain of track, also is applicable to the abrasion resistance that improves coal cutting pick.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of manual, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural representation of alloy head of the present invention;
Fig. 2 is the structural representation of tooth handle of the present invention;
Fig. 3 is the structural representation of ballast excavating chain tooth of the present invention.
In conjunction with accompanying drawing, Reference numeral is following in the embodiment of the invention:
1-tooth handle 2-alloy head 3-groove
4-annular wearing layer 5-elastic cylinder pin-and-hole
The specific embodiment
For making the object of the invention, technical scheme and advantage clearer; To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention carried out clear, intactly description, obviously; Described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Embodiment 1
The disclosed ballast excavating chain of present embodiment tooth comprises the tooth handle and is embedded the alloy head at tooth handle one end,
The tooth handle is provided with groove near an end of alloy head along hand of helix, and flute pitch is from not limitting in twos; Be provided with the groove wearing layer of hot spraying cladding in the groove; The tooth handle along the circumferential direction is provided with the annular wearing layer of hot spraying cladding.Said groove wearing layer can be selected the high-abrasive material of metals such as containing iron, carbon, silicon, boron for use.Present embodiment has solved the caducous problem of alloy head, has reduced the technology difficulty of soldering, and the abrasion resistance that has improved the tooth handle is arranged.Present embodiment is applied in roadbed handles on the car, can improve its operating efficiency.
Embodiment 2
Fig. 1 is the structural representation of alloy head of the present invention; Fig. 2 is the structural representation of tooth handle of the present invention; Fig. 3 is the structural representation of ballast excavating chain tooth of the present invention.
Visible by Fig. 1, said alloy head is a pyramidal structure, and the material of alloy head is YG13.
Visible by Fig. 2, said tooth handle comprises the cylindrical section of frustum section and reducing, and the frustum section of tooth handle is provided with the center pocket that is used to be embedded the alloy head; The radius of the end that the cylindrical section of reducing is embedded near the alloy head is greater than the end away from the alloy head, and cylindrical section is used for installing away from alloy head end reduced radius, also can effectively protect back component.
Visible by Fig. 3, the disclosed a kind of ballast excavating chain tooth of present embodiment comprises that tooth handle 1 and soldering are embedded the alloy head 2 at tooth handle 1 one ends,
Tooth handle 1 is provided with groove 3 near an end of alloy head 2 along hand of helix, in twos groove 3 equidistance; Groove 3 shapes and the depth be restriction not; Be provided with the groove wearing layer of laser melting coating in the groove 3, the groove wearing layer adopts rich chromium cast iron, and the groove wearing layer is concordant with groove 3 notches;
Tooth handle 1 along the circumferential direction is provided with the annular wearing layer 4 of three laser melting coatings.There is annular wearing layer 4 in the intersection of alloy head 2 and tooth handle 1 along the circumferential direction laser melting coating.Tooth handle 1 frustum and cylinder transition position along the circumferential direction are provided with the annular wearing layer 4 of cladding.Tooth handle 1 big or small radius transition place along the circumferential direction also is provided with the annular wearing layer 4 of cladding.In these positions easy to wear annular wearing layer is set, can effectively improves or improve the abrasion resistance of tooth.Annular wearing layer 4 highly is 2mm, width 4mm.The helical form equidistance wearing layer and the annular wearing layer of tooth handle outer surface of cone laser melting coating; Its interlaced net distribution that is; Not only strengthened the rotation abrasion resistance of tooth handle 1, and annular wearing layer 4 has strengthened vertical (axis direction of tooth 1) abrasion resistance of tooth handle 1.Alloy head 2 is not only protected inner brazing layer with the helical abrasion-proof layer and the annular wearing layer at tooth handle 1 place in addition, and has further melted inner solder, has increased soldering strength, and helical groove has reduced the welding difficulty to a certain extent simultaneously.
The tooth handle is provided with elastic cylinder pin-and-hole 5 away from an end of alloy head, and said elastic cylinder pin-and-hole 5 is fixed in to be taken off in the shovel, prevents that tooth from coming off.
Above-mentioned laser melting coating is used the hot spraying cladding instead also can realize the object of the invention.
With do not take to strengthen under the normal wear situation, the tooth handle weares and teares faster than the alloy head, causes the alloy head to come off or whole tooth comes off.And on the tooth handle laser melting coating several roads spiral and annular wearing layer, promptly improved the abrasion resistance of tooth handle, the laser melting coating of alloy head and helical abrasion-proof layer intersection has been strengthened soldering to the solder refuse simultaneously, and alloy is added firmly first watch.
Embodiment 3
The preparation method of embodiment 2 described ballast excavating chain tooth, step is following:
At first, at the tooth handle near an end of alloy head along hand of helix machined grooves (can adopt hot investment casting) to practice thrift cost;
The alloy head is embedded on the tooth handle, is embedded the employing soldering;
In groove, carry out laser melting coating and form the groove wearing layer, groove wearing layer thickness is unrestricted, and is preferably concordant with the groove notch;
At last, along the circumferential direction go up laser melting coating annular wearing layer at tooth handle position easy to wear, can set a plurality of annular wearing layers according to actual needs.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (10)
1. ballast excavating chain tooth comprises: tooth handle and be embedded alloy head at tooth handle one end, it is characterized in that,
Said tooth handle is provided with groove near an end of alloy head along hand of helix, is provided with the groove wearing layer in the said groove; Said tooth handle along the circumferential direction is provided with annular wearing layer.
2. ballast excavating chain tooth according to claim 1 is characterized in that the soldering of said alloy head is embedded at tooth handle one end.
3. ballast excavating chain tooth according to claim 1 is characterized in that the reducing place of said tooth handle along the circumferential direction is provided with annular wearing layer.
4. ballast excavating chain tooth according to claim 1 is characterized in that the intersection of said alloy head and tooth handle along the circumferential direction is provided with annular wearing layer.
5. ballast excavating chain tooth according to claim 1 is characterized in that, said annular wearing layer height is 1-3mm, and width is 3-5mm.
6. ballast excavating chain tooth according to claim 1 is characterized in that said groove wearing layer is concordant with the groove notch.
7. ballast excavating chain tooth according to claim 1 is characterized in that said groove wearing layer and annular wearing layer obtain through laser melting coating or hot spraying cladding.
8. ballast excavating chain tooth according to claim 1 is characterized in that said tooth handle is provided with the elastic cylinder pin-and-hole away from an end of alloy head.
9. the preparation method of any said ballast excavating chain tooth of claim 1-8 is characterized in that, may further comprise the steps:
At first, at the tooth handle near an end of alloy head along the hand of helix machined grooves;
The alloy head is embedded on the tooth handle, saidly is embedded the employing soldering;
Method through laser melting coating or hot spraying cladding in said groove forms the groove wearing layer;
At last, the method that along the circumferential direction goes up through laser melting coating or hot spraying cladding at said tooth handle position easy to wear forms annular wearing layer.
10. according to the preparation method of the said ballast excavating chain of claim 9 tooth, it is characterized in that said, the groove wearing layer is concordant with the groove notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102493334A CN102359039A (en) | 2011-08-26 | 2011-08-26 | Digger teeth of ballast digger chain and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102493334A CN102359039A (en) | 2011-08-26 | 2011-08-26 | Digger teeth of ballast digger chain and manufacturing method thereof |
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| CN102359039A true CN102359039A (en) | 2012-02-22 |
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| CN2011102493334A Pending CN102359039A (en) | 2011-08-26 | 2011-08-26 | Digger teeth of ballast digger chain and manufacturing method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201730622U (en) * | 2010-05-20 | 2011-02-02 | 刘玉海 | Pickaxe-shaped cutting pick |
| CN201857967U (en) * | 2010-10-15 | 2011-06-08 | 吕增和 | Abrasion-resistant pick-shaped cutter preventing bit from shedding |
| CN102146645A (en) * | 2011-04-18 | 2011-08-10 | 南车戚墅堰机车车辆工艺研究所有限公司 | Abrasion-resistant rake teeth for railway ballast cleaning device |
| CN202265853U (en) * | 2011-08-26 | 2012-06-06 | 北京二七轨道交通装备有限责任公司 | Excavating tooth of ballast excavating chain |
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- 2011-08-26 CN CN2011102493334A patent/CN102359039A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201730622U (en) * | 2010-05-20 | 2011-02-02 | 刘玉海 | Pickaxe-shaped cutting pick |
| CN201857967U (en) * | 2010-10-15 | 2011-06-08 | 吕增和 | Abrasion-resistant pick-shaped cutter preventing bit from shedding |
| CN102146645A (en) * | 2011-04-18 | 2011-08-10 | 南车戚墅堰机车车辆工艺研究所有限公司 | Abrasion-resistant rake teeth for railway ballast cleaning device |
| CN202265853U (en) * | 2011-08-26 | 2012-06-06 | 北京二七轨道交通装备有限责任公司 | Excavating tooth of ballast excavating chain |
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Application publication date: 20120222 |